glib/glib.h

   1 /* GLIB - Library of useful routines for C programming
   2  * Copyright (C) 1995-1997  Peter Mattis, Spencer Kimball and Josh MacDonald
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Library General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Library General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Library General Public
  15  * License along with this library; if not, write to the
  16  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  17  * Boston, MA 02111-1307, USA.
  18  */
  19
  20 /*
  21  * Modified by the GLib Team and others 1997-1999.  See the AUTHORS
  22  * file for a list of people on the GLib Team.  See the ChangeLog
  23  * files for a list of changes.  These files are distributed with
  24  * GLib at ftp://ftp.gtk.org/pub/gtk/.
  25  */
  26
  27 #ifndef __G_LIB_H__
  28 #define __G_LIB_H__
  29
  30 /* system specific config file glibconfig.h provides definitions for
  31  * the extrema of many of the standard types. These are:
  32  *
  33  *  G_MINSHORT, G_MAXSHORT
  34  *  G_MININT, G_MAXINT
  35  *  G_MINLONG, G_MAXLONG
  36  *  G_MINFLOAT, G_MAXFLOAT
  37  *  G_MINDOUBLE, G_MAXDOUBLE
  38  *
  39  * It also provides the following typedefs:
  40  *
  41  *  gint8, guint8
  42  *  gint16, guint16
  43  *  gint32, guint32
  44  *  gint64, guint64
  45  *
  46  * It defines the G_BYTE_ORDER symbol to one of G_*_ENDIAN (see later in
  47  * this file).
  48  *
  49  * And it provides a way to store and retrieve a `gint' in/from a `gpointer'.
  50  * This is useful to pass an integer instead of a pointer to a callback.
  51  *
  52  *  GINT_TO_POINTER(i), GUINT_TO_POINTER(i)
  53  *  GPOINTER_TO_INT(p), GPOINTER_TO_UINT(p)
  54  *
  55  * Finally, it provide the following wrappers to STDC functions:
  56  *
  57  *  g_ATEXIT
  58  *    To register hooks which are executed on exit().
  59  *    Usually a wrapper for STDC atexit.
  60  *
  61  *  void g_memmove(gpointer dest, gconstpointer void *src, gulong count);
  62  *    A wrapper for STDC memmove, or an implementation, if memmove doesn't
  63  *    exist.  The prototype looks like the above, give or take a const,
  64  *    or size_t.
  65  */
  66 #include <glibconfig.h>
  67
  68 /* include varargs functions for assertment macros
  69  */
  70 #include <stdarg.h>
  71
  72 /* optionally feature DMALLOC memory allocation debugger
  73  */
  74 #ifdef USE_DMALLOC
  75 #include "dmalloc.h"
  76 #endif
  77
  78
  79 #ifdef NATIVE_WIN32
  80
  81 /* On native Win32, directory separator is the backslash, and search path
  82  * separator is the semicolon.
  83  */
  84 #define G_DIR_SEPARATOR '\\'
  85 #define G_DIR_SEPARATOR_S "\\"
  86 #define G_SEARCHPATH_SEPARATOR ';'
  87 #define G_SEARCHPATH_SEPARATOR_S ";"
  88
  89 #else  /* !NATIVE_WIN32 */
  90
  91 /* Unix */
  92
  93 #define G_DIR_SEPARATOR '/'
  94 #define G_DIR_SEPARATOR_S "/"
  95 #define G_SEARCHPATH_SEPARATOR ':'
  96 #define G_SEARCHPATH_SEPARATOR_S ":"
  97
  98 #endif /* !NATIVE_WIN32 */
  99
 100 #ifdef __cplusplus
 101 extern "C" {
 102 #endif /* __cplusplus */
 103
 104
 105 /* Provide definitions for some commonly used macros.
 106  *  Some of them are only provided if they haven't already
 107  *  been defined. It is assumed that if they are already
 108  *  defined then the current definition is correct.
 109  */
 110 #ifndef NULL
 111 #define NULL    ((void*) 0)
 112 #endif
 113
 114 #ifndef FALSE
 115 #define FALSE   (0)
 116 #endif
 117
 118 #ifndef TRUE
 119 #define TRUE    (!FALSE)
 120 #endif
 121
 122 #undef  MAX
 123 #define MAX(a, b)  (((a) > (b)) ? (a) : (b))
 124
 125 #undef  MIN
 126 #define MIN(a, b)  (((a) < (b)) ? (a) : (b))
 127
 128 #undef  ABS
 129 #define ABS(a)     (((a) < 0) ? -(a) : (a))
 130
 131 #undef  CLAMP
 132 #define CLAMP(x, low, high)  (((x) > (high)) ? (high) : (((x) < (low)) ? (low) : (x)))
 133
 134
 135 /* Define G_VA_COPY() to do the right thing for copying va_list variables.
 136  * glibconfig.h may have already defined G_VA_COPY as va_copy or __va_copy.
 137  */
 138 #if !defined (G_VA_COPY)
 139 #  if defined (__GNUC__) && defined (__PPC__) && (defined (_CALL_SYSV) || defined (_WIN32))
 140 #  define G_VA_COPY(ap1, ap2)     (*(ap1) = *(ap2))
 141 #  elif defined (G_VA_COPY_AS_ARRAY)
 142 #  define G_VA_COPY(ap1, ap2)     g_memmove ((ap1), (ap2), sizeof (va_list))
 143 #  else /* va_list is a pointer */
 144 #  define G_VA_COPY(ap1, ap2)     ((ap1) = (ap2))
 145 #  endif /* va_list is a pointer */
 146 #endif /* !G_VA_COPY */
 147
 148
 149 /* Provide convenience macros for handling structure
 150  * fields through their offsets.
 151  */
 152 #define G_STRUCT_OFFSET(struct_type, member)    \
 153     ((gulong) ((gchar*) &((struct_type*) 0)->member))
 154 #define G_STRUCT_MEMBER_P(struct_p, struct_offset)   \
 155     ((gpointer) ((gchar*) (struct_p) + (gulong) (struct_offset)))
 156 #define G_STRUCT_MEMBER(member_type, struct_p, struct_offset)   \
 157     (*(member_type*) G_STRUCT_MEMBER_P ((struct_p), (struct_offset)))
 158
 159
 160 /* inlining hassle. for compilers that don't allow the `inline' keyword,
 161  * mostly because of strict ANSI C compliance or dumbness, we try to fall
 162  * back to either `__inline__' or `__inline'.
 163  * we define G_CAN_INLINE, if the compiler seems to be actually
 164  * *capable* to do function inlining, in which case inline function bodys
 165  * do make sense. we also define G_INLINE_FUNC to properly export the
 166  * function prototypes if no inlining can be performed.
 167  * we special case most of the stuff, so inline functions can have a normal
 168  * implementation by defining G_INLINE_FUNC to extern and G_CAN_INLINE to 1.
 169  */
 170 #ifndef G_INLINE_FUNC
 171 #  define G_CAN_INLINE 1
 172 #endif
 173 #ifdef G_HAVE_INLINE
 174 #  if defined (__GNUC__) && defined (__STRICT_ANSI__)
 175 #    undef inline
 176 #    define inline __inline__
 177 #  endif
 178 #else /* !G_HAVE_INLINE */
 179 #  undef inline
 180 #  if defined (G_HAVE___INLINE__)
 181 #    define inline __inline__
 182 #  else /* !inline && !__inline__ */
 183 #    if defined (G_HAVE___INLINE)
 184 #      define inline __inline
 185 #    else /* !inline && !__inline__ && !__inline */
 186 #      define inline /* don't inline, then */
 187 #      ifndef G_INLINE_FUNC
 188 #        undef G_CAN_INLINE
 189 #      endif
 190 #    endif
 191 #  endif
 192 #endif
 193 #ifndef G_INLINE_FUNC
 194 #  ifdef __GNUC__
 195 #    ifdef __OPTIMIZE__
 196 #      define G_INLINE_FUNC extern inline
 197 #    else
 198 #      undef G_CAN_INLINE
 199 #      define G_INLINE_FUNC extern
 200 #    endif
 201 #  else /* !__GNUC__ */
 202 #    ifdef G_CAN_INLINE
 203 #      define G_INLINE_FUNC static inline
 204 #    else
 205 #      define G_INLINE_FUNC extern
 206 #    endif
 207 #  endif /* !__GNUC__ */
 208 #endif /* !G_INLINE_FUNC */
 209
 210
 211 /* Provide simple macro statement wrappers (adapted from Perl):
 212  *  G_STMT_START { statements; } G_STMT_END;
 213  *  can be used as a single statement, as in
 214  *  if (x) G_STMT_START { ... } G_STMT_END; else ...
 215  *
 216  *  For gcc we will wrap the statements within `({' and `})' braces.
 217  *  For SunOS they will be wrapped within `if (1)' and `else (void) 0',
 218  *  and otherwise within `do' and `while (0)'.
 219  */
 220 #if !(defined (G_STMT_START) && defined (G_STMT_END))
 221 #  if defined (__GNUC__) && !defined (__STRICT_ANSI__) && !defined (__cplusplus)
 222 #    define G_STMT_START        (void)(
 223 #    define G_STMT_END          )
 224 #  else
 225 #    if (defined (sun) || defined (__sun__))
 226 #      define G_STMT_START      if (1)
 227 #      define G_STMT_END        else (void)0
 228 #    else
 229 #      define G_STMT_START      do
 230 #      define G_STMT_END        while (0)
 231 #    endif
 232 #  endif
 233 #endif
 234
 235
 236 /* Provide macros to feature the GCC function attribute.
 237  */
 238 #if     __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ > 4)
 239 #define G_GNUC_PRINTF( format_idx, arg_idx )    \
 240   __attribute__((format (printf, format_idx, arg_idx)))
 241 #define G_GNUC_SCANF( format_idx, arg_idx )     \
 242   __attribute__((format (scanf, format_idx, arg_idx)))
 243 #define G_GNUC_FORMAT( arg_idx )                \
 244   __attribute__((format_arg (arg_idx)))
 245 #define G_GNUC_NORETURN                         \
 246   __attribute__((noreturn))
 247 #define G_GNUC_CONST                            \
 248   __attribute__((const))
 249 #define G_GNUC_UNUSED                           \
 250   __attribute__((unused))
 251 #else   /* !__GNUC__ */
 252 #define G_GNUC_PRINTF( format_idx, arg_idx )
 253 #define G_GNUC_SCANF( format_idx, arg_idx )
 254 #define G_GNUC_FORMAT( arg_idx )
 255 #define G_GNUC_NORETURN
 256 #define G_GNUC_CONST
 257 #define G_GNUC_UNUSED
 258 #endif  /* !__GNUC__ */
 259
 260
 261 /* Wrap the gcc __PRETTY_FUNCTION__ and __FUNCTION__ variables with
 262  * macros, so we can refer to them as strings unconditionally.
 263  */
 264 #ifdef  __GNUC__
 265 #define G_GNUC_FUNCTION         (__FUNCTION__)
 266 #define G_GNUC_PRETTY_FUNCTION  (__PRETTY_FUNCTION__)
 267 #else   /* !__GNUC__ */
 268 #define G_GNUC_FUNCTION         ("")
 269 #define G_GNUC_PRETTY_FUNCTION  ("")
 270 #endif  /* !__GNUC__ */
 271
 272 /* we try to provide a usefull equivalent for ATEXIT if it is
 273  * not defined, but use is actually abandoned. people should
 274  * use g_atexit() instead.
 275  */
 276 #ifndef ATEXIT
 277 # define ATEXIT(proc)   g_ATEXIT(proc)
 278 #else
 279 # define G_NATIVE_ATEXIT
 280 #endif /* ATEXIT */
 281
 282 /* Hacker macro to place breakpoints for elected machines.
 283  * Actual use is strongly deprecated of course ;)
 284  */
 285 #if defined (__i386__) && defined (__GNUC__) && __GNUC__ >= 2
 286 #define G_BREAKPOINT()          G_STMT_START{ __asm__ __volatile__ ("int $03"); }G_STMT_END
 287 #elif defined (__alpha__) && defined (__GNUC__) && __GNUC__ >= 2
 288 #define G_BREAKPOINT()          G_STMT_START{ __asm__ __volatile__ ("bpt"); }G_STMT_END
 289 #else   /* !__i386__ && !__alpha__ */
 290 #define G_BREAKPOINT()
 291 #endif  /* __i386__ */
 292
 293
 294 /* Provide macros for easily allocating memory. The macros
 295  *  will cast the allocated memory to the specified type
 296  *  in order to avoid compiler warnings. (Makes the code neater).
 297  */
 298
 299 #ifdef __DMALLOC_H__
 300 #  define g_new(type, count)            (ALLOC (type, count))
 301 #  define g_new0(type, count)           (CALLOC (type, count))
 302 #  define g_renew(type, mem, count)     (REALLOC (mem, type, count))
 303 #else /* __DMALLOC_H__ */
 304 #  define g_new(type, count)      \
 305       ((type *) g_malloc ((unsigned) sizeof (type) * (count)))
 306 #  define g_new0(type, count)     \
 307       ((type *) g_malloc0 ((unsigned) sizeof (type) * (count)))
 308 #  define g_renew(type, mem, count)       \
 309       ((type *) g_realloc (mem, (unsigned) sizeof (type) * (count)))
 310 #endif /* __DMALLOC_H__ */
 311
 312 #define g_mem_chunk_create(type, pre_alloc, alloc_type) ( \
 313   g_mem_chunk_new (#type " mem chunks (" #pre_alloc ")", \
 314                    sizeof (type), \
 315                    sizeof (type) * (pre_alloc), \
 316                    (alloc_type)) \
 317 )
 318 #define g_chunk_new(type, chunk)        ( \
 319   (type *) g_mem_chunk_alloc (chunk) \
 320 )
 321 #define g_chunk_new0(type, chunk)       ( \
 322   (type *) g_mem_chunk_alloc0 (chunk) \
 323 )
 324 #define g_chunk_free(mem, mem_chunk)    G_STMT_START { \
 325   g_mem_chunk_free ((mem_chunk), (mem)); \
 326 } G_STMT_END
 327
 328
 329 #define g_string(x) #x
 330
 331
 332 /* Provide macros for error handling. The "assert" macros will
 333  *  exit on failure. The "return" macros will exit the current
 334  *  function. Two different definitions are given for the macros
 335  *  if G_DISABLE_ASSERT is not defined, in order to support gcc's
 336  *  __PRETTY_FUNCTION__ capability.
 337  */
 338
 339 #ifdef G_DISABLE_ASSERT
 340
 341 #define g_assert(expr)
 342 #define g_assert_not_reached()
 343
 344 #else /* !G_DISABLE_ASSERT */
 345
 346 #ifdef __GNUC__
 347
 348 #define g_assert(expr)                  G_STMT_START{           \
 349      if (!(expr))                                               \
 350        g_log (G_LOG_DOMAIN,                                     \
 351               G_LOG_LEVEL_ERROR,                                \
 352               "file %s: line %d (%s): assertion failed: (%s)",  \
 353               __FILE__,                                         \
 354               __LINE__,                                         \
 355               __PRETTY_FUNCTION__,                              \
 356               #expr);                   }G_STMT_END
 357
 358 #define g_assert_not_reached()          G_STMT_START{           \
 359      g_log (G_LOG_DOMAIN,                                       \
 360             G_LOG_LEVEL_ERROR,                                  \
 361             "file %s: line %d (%s): should not be reached",     \
 362             __FILE__,                                           \
 363             __LINE__,                                           \
 364             __PRETTY_FUNCTION__);       }G_STMT_END
 365
 366 #else /* !__GNUC__ */
 367
 368 #define g_assert(expr)                  G_STMT_START{           \
 369      if (!(expr))                                               \
 370        g_log (G_LOG_DOMAIN,                                     \
 371               G_LOG_LEVEL_ERROR,                                \
 372               "file %s: line %d: assertion failed: (%s)",       \
 373               __FILE__,                                         \
 374               __LINE__,                                         \
 375               #expr);                   }G_STMT_END
 376
 377 #define g_assert_not_reached()          G_STMT_START{   \
 378      g_log (G_LOG_DOMAIN,                               \
 379             G_LOG_LEVEL_ERROR,                          \
 380             "file %s: line %d: should not be reached",  \
 381             __FILE__,                                   \
 382             __LINE__);          }G_STMT_END
 383
 384 #endif /* __GNUC__ */
 385
 386 #endif /* !G_DISABLE_ASSERT */
 387
 388
 389 #ifdef G_DISABLE_CHECKS
 390
 391 #define g_return_if_fail(expr)
 392 #define g_return_val_if_fail(expr,val)
 393
 394 #else /* !G_DISABLE_CHECKS */
 395
 396 #ifdef __GNUC__
 397
 398 #define g_return_if_fail(expr)          G_STMT_START{                   \
 399      if (!(expr))                                                       \
 400        {                                                                \
 401          g_log (G_LOG_DOMAIN,                                           \
 402                 G_LOG_LEVEL_CRITICAL,                                   \
 403                 "file %s: line %d (%s): assertion `%s' failed.",        \
 404                 __FILE__,                                               \
 405                 __LINE__,                                               \
 406                 __PRETTY_FUNCTION__,                                    \
 407                 #expr);                                                 \
 408          return;                                                        \
 409        };                               }G_STMT_END
 410
 411 #define g_return_val_if_fail(expr,val)  G_STMT_START{                   \
 412      if (!(expr))                                                       \
 413        {                                                                \
 414          g_log (G_LOG_DOMAIN,                                           \
 415                 G_LOG_LEVEL_CRITICAL,                                   \
 416                 "file %s: line %d (%s): assertion `%s' failed.",        \
 417                 __FILE__,                                               \
 418                 __LINE__,                                               \
 419                 __PRETTY_FUNCTION__,                                    \
 420                 #expr);                                                 \
 421          return val;                                                    \
 422        };                               }G_STMT_END
 423
 424 #else /* !__GNUC__ */
 425
 426 #define g_return_if_fail(expr)          G_STMT_START{           \
 427      if (!(expr))                                               \
 428        {                                                        \
 429          g_log (G_LOG_DOMAIN,                                   \
 430                 G_LOG_LEVEL_CRITICAL,                           \
 431                 "file %s: line %d: assertion `%s' failed.",     \
 432                 __FILE__,                                       \
 433                 __LINE__,                                       \
 434                 #expr);                                         \
 435          return;                                                \
 436        };                               }G_STMT_END
 437
 438 #define g_return_val_if_fail(expr, val) G_STMT_START{           \
 439      if (!(expr))                                               \
 440        {                                                        \
 441          g_log (G_LOG_DOMAIN,                                   \
 442                 G_LOG_LEVEL_CRITICAL,                           \
 443                 "file %s: line %d: assertion `%s' failed.",     \
 444                 __FILE__,                                       \
 445                 __LINE__,                                       \
 446                 #expr);                                         \
 447          return val;                                            \
 448        };                               }G_STMT_END
 449
 450 #endif /* !__GNUC__ */
 451
 452 #endif /* !G_DISABLE_CHECKS */
 453
 454
 455 /* Provide type definitions for commonly used types.
 456  *  These are useful because a "gint8" can be adjusted
 457  *  to be 1 byte (8 bits) on all platforms. Similarly and
 458  *  more importantly, "gint32" can be adjusted to be
 459  *  4 bytes (32 bits) on all platforms.
 460  */
 461
 462 typedef char   gchar;
 463 typedef short  gshort;
 464 typedef long   glong;
 465 typedef int    gint;
 466 typedef gint   gboolean;
 467
 468 typedef unsigned char   guchar;
 469 typedef unsigned short  gushort;
 470 typedef unsigned long   gulong;
 471 typedef unsigned int    guint;
 472
 473 #define G_GSHORT_FORMAT  "hi"
 474 #define G_GUSHORT_FORMAT "hu"
 475 #define G_GINT_FORMAT    "i"
 476 #define G_GUINT_FORMAT   "u"
 477 #define G_GLONG_FORMAT   "li"
 478 #define G_GULONG_FORMAT  "lu"
 479
 480 typedef float   gfloat;
 481 typedef double  gdouble;
 482
 483 /* HAVE_LONG_DOUBLE doesn't work correctly on all platforms.
 484  * Since gldouble isn't used anywhere, just disable it for now */
 485
 486 #if 0
 487 #ifdef HAVE_LONG_DOUBLE
 488 typedef long double gldouble;
 489 #else /* HAVE_LONG_DOUBLE */
 490 typedef double gldouble;
 491 #endif /* HAVE_LONG_DOUBLE */
 492 #endif /* 0 */
 493
 494 typedef void* gpointer;
 495 typedef const void *gconstpointer;
 496
 497
 498 typedef gint32  gssize;
 499 typedef guint32 gsize;
 500 typedef guint32 GQuark;
 501 typedef gint32  GTime;
 502
 503
 504 /* Portable endian checks and conversions
 505  *
 506  * glibconfig.h defines G_BYTE_ORDER which expands to one of
 507  * the below macros.
 508  */
 509 #define G_LITTLE_ENDIAN 1234
 510 #define G_BIG_ENDIAN    4321
 511 #define G_PDP_ENDIAN    3412            /* unused, need specific PDP check */
 512
 513
 514 /* Basic bit swapping functions
 515  */
 516 #define GUINT16_SWAP_LE_BE_CONSTANT(val)        ((guint16) ( \
 517     (((guint16) (val) & (guint16) 0x00ffU) << 8) | \
 518     (((guint16) (val) & (guint16) 0xff00U) >> 8)))
 519 #define GUINT32_SWAP_LE_BE_CONSTANT(val)        ((guint32) ( \
 520     (((guint32) (val) & (guint32) 0x000000ffU) << 24) | \
 521     (((guint32) (val) & (guint32) 0x0000ff00U) <<  8) | \
 522     (((guint32) (val) & (guint32) 0x00ff0000U) >>  8) | \
 523     (((guint32) (val) & (guint32) 0xff000000U) >> 24)))
 524
 525 /* Intel specific stuff for speed
 526  */
 527 #if defined (__i386__) && defined (__GNUC__) && __GNUC__ >= 2
 528 #  define GUINT16_SWAP_LE_BE_X86(val) \
 529      (__extension__                                     \
 530       ({ register guint16 __v;                          \
 531          if (__builtin_constant_p (val))                \
 532            __v = GUINT16_SWAP_LE_BE_CONSTANT (val);     \
 533          else                                           \
 534            __asm__ __const__ ("rorw $8, %w0"            \
 535                               : "=r" (__v)              \
 536                               : "0" ((guint16) (val))); \
 537         __v; }))
 538 #  define GUINT16_SWAP_LE_BE(val) (GUINT16_SWAP_LE_BE_X86 (val))
 539 #  if !defined(__i486__) && !defined(__i586__) \
 540       && !defined(__pentium__) && !defined(__i686__) && !defined(__pentiumpro__)
 541 #     define GUINT32_SWAP_LE_BE_X86(val) \
 542         (__extension__                                          \
 543          ({ register guint32 __v;                               \
 544             if (__builtin_constant_p (val))                     \
 545               __v = GUINT32_SWAP_LE_BE_CONSTANT (val);          \
 546           else                                                  \
 547             __asm__ __const__ ("rorw $8, %w0\n\t"               \
 548                                "rorl $16, %0\n\t"               \
 549                                "rorw $8, %w0"                   \
 550                                : "=r" (__v)                     \
 551                                : "0" ((guint32) (val)));        \
 552         __v; }))
 553 #  else /* 486 and higher has bswap */
 554 #     define GUINT32_SWAP_LE_BE_X86(val) \
 555         (__extension__                                          \
 556          ({ register guint32 __v;                               \
 557             if (__builtin_constant_p (val))                     \
 558               __v = GUINT32_SWAP_LE_BE_CONSTANT (val);          \
 559           else                                                  \
 560             __asm__ __const__ ("bswap %0"                       \
 561                                : "=r" (__v)                     \
 562                                : "0" ((guint32) (val)));        \
 563         __v; }))
 564 #  endif /* processor specific 32-bit stuff */
 565 #  define GUINT32_SWAP_LE_BE(val) (GUINT32_SWAP_LE_BE_X86 (val))
 566 #else /* !__i386__ */
 567 #  define GUINT16_SWAP_LE_BE(val) (GUINT16_SWAP_LE_BE_CONSTANT (val))
 568 #  define GUINT32_SWAP_LE_BE(val) (GUINT32_SWAP_LE_BE_CONSTANT (val))
 569 #endif /* __i386__ */
 570
 571 #ifdef G_HAVE_GINT64
 572 #  define GUINT64_SWAP_LE_BE_CONSTANT(val)      ((guint64) ( \
 573       (((guint64) (val) &                                               \
 574         (guint64) G_GINT64_CONSTANT(0x00000000000000ffU)) << 56) |      \
 575       (((guint64) (val) &                                               \
 576         (guint64) G_GINT64_CONSTANT(0x000000000000ff00U)) << 40) |      \
 577       (((guint64) (val) &                                               \
 578         (guint64) G_GINT64_CONSTANT(0x0000000000ff0000U)) << 24) |      \
 579       (((guint64) (val) &                                               \
 580         (guint64) G_GINT64_CONSTANT(0x00000000ff000000U)) <<  8) |      \
 581       (((guint64) (val) &                                               \
 582         (guint64) G_GINT64_CONSTANT(0x000000ff00000000U)) >>  8) |      \
 583       (((guint64) (val) &                                               \
 584         (guint64) G_GINT64_CONSTANT(0x0000ff0000000000U)) >> 24) |      \
 585       (((guint64) (val) &                                               \
 586         (guint64) G_GINT64_CONSTANT(0x00ff000000000000U)) >> 40) |      \
 587       (((guint64) (val) &                                               \
 588         (guint64) G_GINT64_CONSTANT(0xff00000000000000U)) >> 56)))
 589 #  if defined (__i386__) && defined (__GNUC__) && __GNUC__ >= 2
 590 #    define GUINT64_SWAP_LE_BE_X86(val) \
 591         (__extension__                                          \
 592          ({ union { guint64 __ll;                               \
 593                     guint32 __l[2]; } __r;                      \
 594             if (__builtin_constant_p (val))                     \
 595               __r.__ll = GUINT64_SWAP_LE_BE_CONSTANT (val);     \
 596             else                                                \
 597               {                                                 \
 598                 union { guint64 __ll;                           \
 599                         guint32 __l[2]; } __w;                  \
 600                 __w.__ll = ((guint64) val);                     \
 601                 __r.__l[0] = GUINT32_SWAP_LE_BE (__w.__l[1]);   \
 602                 __r.__l[1] = GUINT32_SWAP_LE_BE (__w.__l[0]);   \
 603               }                                                 \
 604           __r.__ll; }))
 605 #    define GUINT64_SWAP_LE_BE(val) (GUINT64_SWAP_LE_BE_X86 (val))
 606 #  else /* !__i386__ */
 607 #    define GUINT64_SWAP_LE_BE(val) (GUINT64_SWAP_LE_BE_CONSTANT(val))
 608 #  endif
 609 #endif
 610
 611 #define GUINT16_SWAP_LE_PDP(val)        ((guint16) (val))
 612 #define GUINT16_SWAP_BE_PDP(val)        (GUINT16_SWAP_LE_BE (val))
 613 #define GUINT32_SWAP_LE_PDP(val)        ((guint32) ( \
 614     (((guint32) (val) & (guint32) 0x0000ffffU) << 16) | \
 615     (((guint32) (val) & (guint32) 0xffff0000U) >> 16)))
 616 #define GUINT32_SWAP_BE_PDP(val)        ((guint32) ( \
 617     (((guint32) (val) & (guint32) 0x00ff00ffU) << 8) | \
 618     (((guint32) (val) & (guint32) 0xff00ff00U) >> 8)))
 619
 620 /* The G*_TO_?E() macros are defined in glibconfig.h.
 621  * The transformation is symmetric, so the FROM just maps to the TO.
 622  */
 623 #define GINT16_FROM_LE(val)     (GINT16_TO_LE (val))
 624 #define GUINT16_FROM_LE(val)    (GUINT16_TO_LE (val))
 625 #define GINT16_FROM_BE(val)     (GINT16_TO_BE (val))
 626 #define GUINT16_FROM_BE(val)    (GUINT16_TO_BE (val))
 627 #define GINT32_FROM_LE(val)     (GINT32_TO_LE (val))
 628 #define GUINT32_FROM_LE(val)    (GUINT32_TO_LE (val))
 629 #define GINT32_FROM_BE(val)     (GINT32_TO_BE (val))
 630 #define GUINT32_FROM_BE(val)    (GUINT32_TO_BE (val))
 631
 632 #ifdef G_HAVE_GINT64
 633 #define GINT64_FROM_LE(val)     (GINT64_TO_LE (val))
 634 #define GUINT64_FROM_LE(val)    (GUINT64_TO_LE (val))
 635 #define GINT64_FROM_BE(val)     (GINT64_TO_BE (val))
 636 #define GUINT64_FROM_BE(val)    (GUINT64_TO_BE (val))
 637 #endif
 638
 639 #define GLONG_FROM_LE(val)      (GLONG_TO_LE (val))
 640 #define GULONG_FROM_LE(val)     (GULONG_TO_LE (val))
 641 #define GLONG_FROM_BE(val)      (GLONG_TO_BE (val))
 642 #define GULONG_FROM_BE(val)     (GULONG_TO_BE (val))
 643
 644 #define GINT_FROM_LE(val)       (GINT_TO_LE (val))
 645 #define GUINT_FROM_LE(val)      (GUINT_TO_LE (val))
 646 #define GINT_FROM_BE(val)       (GINT_TO_BE (val))
 647 #define GUINT_FROM_BE(val)      (GUINT_TO_BE (val))
 648
 649
 650 /* Portable versions of host-network order stuff
 651  */
 652 #define g_ntohl(val) (GUINT32_FROM_BE (val))
 653 #define g_ntohs(val) (GUINT16_FROM_BE (val))
 654 #define g_htonl(val) (GUINT32_TO_BE (val))
 655 #define g_htons(val) (GUINT16_TO_BE (val))
 656
 657
 658 /* Glib version.
 659  * we prefix variable declarations so they can
 660  * properly get exported in windows dlls.
 661  */
 662 #ifdef NATIVE_WIN32
 663 #  ifdef GLIB_COMPILATION
 664 #    define GUTILS_C_VAR __declspec(dllexport)
 665 #  else /* !GLIB_COMPILATION */
 666 #    define GUTILS_C_VAR extern __declspec(dllimport)
 667 #  endif /* !GLIB_COMPILATION */
 668 #else /* !NATIVE_WIN32 */
 669 #  define GUTILS_C_VAR extern
 670 #endif /* !NATIVE_WIN32 */
 671
 672 GUTILS_C_VAR const guint glib_major_version;
 673 GUTILS_C_VAR const guint glib_minor_version;
 674 GUTILS_C_VAR const guint glib_micro_version;
 675 GUTILS_C_VAR const guint glib_interface_age;
 676 GUTILS_C_VAR const guint glib_binary_age;
 677
 678 #define GLIB_CHECK_VERSION(major,minor,micro)    \
 679     (GLIB_MAJOR_VERSION > (major) || \
 680      (GLIB_MAJOR_VERSION == (major) && GLIB_MINOR_VERSION > (minor)) || \
 681      (GLIB_MAJOR_VERSION == (major) && GLIB_MINOR_VERSION == (minor) && \
 682       GLIB_MICRO_VERSION >= (micro)))
 683
 684 /* Forward declarations of glib types.
 685  */
 686 typedef struct _GAllocator      GAllocator;
 687 typedef struct _GArray          GArray;
 688 typedef struct _GByteArray      GByteArray;
 689 typedef struct _GCache          GCache;
 690 typedef struct _GCompletion     GCompletion;
 691 typedef struct _GData           GData;
 692 typedef struct _GDebugKey       GDebugKey;
 693 typedef struct _GHashTable      GHashTable;
 694 typedef struct _GHook           GHook;
 695 typedef struct _GHookList       GHookList;
 696 typedef struct _GList           GList;
 697 typedef struct _GMemChunk       GMemChunk;
 698 typedef struct _GNode           GNode;
 699 typedef struct _GPtrArray       GPtrArray;
 700 typedef struct _GQueue          GQueue;
 701 typedef struct _GRand           GRand;
 702 typedef struct _GRelation       GRelation;
 703 typedef struct _GScanner        GScanner;
 704 typedef struct _GScannerConfig  GScannerConfig;
 705 typedef struct _GSList          GSList;
 706 typedef struct _GStack          GStack;
 707 typedef struct _GString         GString;
 708 typedef struct _GStringChunk    GStringChunk;
 709 typedef struct _GTimer          GTimer;
 710 typedef struct _GTree           GTree;
 711 typedef struct _GTuples         GTuples;
 712 typedef union  _GTokenValue     GTokenValue;
 713 typedef struct _GIOChannel      GIOChannel;
 714
 715 typedef enum
 716 {
 717   G_TRAVERSE_LEAFS      = 1 << 0,
 718   G_TRAVERSE_NON_LEAFS  = 1 << 1,
 719   G_TRAVERSE_ALL        = G_TRAVERSE_LEAFS | G_TRAVERSE_NON_LEAFS,
 720   G_TRAVERSE_MASK       = 0x03
 721 } GTraverseFlags;
 722
 723 typedef enum
 724 {
 725   G_IN_ORDER,
 726   G_PRE_ORDER,
 727   G_POST_ORDER,
 728   G_LEVEL_ORDER
 729 } GTraverseType;
 730
 731 /* Log level shift offset for user defined
 732  * log levels (0-7 are used by GLib).
 733  */
 734 #define G_LOG_LEVEL_USER_SHIFT  (8)
 735
 736 /* Glib log levels and flags.
 737  */
 738 typedef enum
 739 {
 740   /* log flags */
 741   G_LOG_FLAG_RECURSION          = 1 << 0,
 742   G_LOG_FLAG_FATAL              = 1 << 1,
 743
 744   /* GLib log levels */
 745   G_LOG_LEVEL_ERROR             = 1 << 2,       /* always fatal */
 746   G_LOG_LEVEL_CRITICAL          = 1 << 3,
 747   G_LOG_LEVEL_WARNING           = 1 << 4,
 748   G_LOG_LEVEL_MESSAGE           = 1 << 5,
 749   G_LOG_LEVEL_INFO              = 1 << 6,
 750   G_LOG_LEVEL_DEBUG             = 1 << 7,
 751
 752   G_LOG_LEVEL_MASK              = ~(G_LOG_FLAG_RECURSION | G_LOG_FLAG_FATAL)
 753 } GLogLevelFlags;
 754
 755 /* GLib log levels that are considered fatal by default */
 756 #define G_LOG_FATAL_MASK        (G_LOG_FLAG_RECURSION | G_LOG_LEVEL_ERROR)
 757
 758
 759 typedef gpointer        (*GCacheNewFunc)        (gpointer       key);
 760 typedef gpointer        (*GCacheDupFunc)        (gpointer       value);
 761 typedef void            (*GCacheDestroyFunc)    (gpointer       value);
 762 typedef gint            (*GCompareFunc)         (gconstpointer  a,
 763                                                  gconstpointer  b);
 764 typedef gchar*          (*GCompletionFunc)      (gpointer);
 765 typedef void            (*GDestroyNotify)       (gpointer       data);
 766 typedef void            (*GDataForeachFunc)     (GQuark         key_id,
 767                                                  gpointer       data,
 768                                                  gpointer       user_data);
 769 typedef void            (*GFunc)                (gpointer       data,
 770                                                  gpointer       user_data);
 771 typedef guint           (*GHashFunc)            (gconstpointer  key);
 772 typedef void            (*GFreeFunc)            (gpointer       data);
 773 typedef void            (*GHFunc)               (gpointer       key,
 774                                                  gpointer       value,
 775                                                  gpointer       user_data);
 776 typedef gboolean        (*GHRFunc)              (gpointer       key,
 777                                                  gpointer       value,
 778                                                  gpointer       user_data);
 779 typedef gint            (*GHookCompareFunc)     (GHook          *new_hook,
 780                                                  GHook          *sibling);
 781 typedef gboolean        (*GHookFindFunc)        (GHook          *hook,
 782                                                  gpointer        data);
 783 typedef void            (*GHookMarshaller)      (GHook          *hook,
 784                                                  gpointer        data);
 785 typedef gboolean        (*GHookCheckMarshaller) (GHook          *hook,
 786                                                  gpointer        data);
 787 typedef void            (*GHookFunc)            (gpointer        data);
 788 typedef gboolean        (*GHookCheckFunc)       (gpointer        data);
 789 typedef void            (*GHookFreeFunc)        (GHookList      *hook_list,
 790                                                  GHook          *hook);
 791 typedef void            (*GLogFunc)             (const gchar   *log_domain,
 792                                                  GLogLevelFlags log_level,
 793                                                  const gchar   *message,
 794                                                  gpointer       user_data);
 795 typedef gboolean        (*GNodeTraverseFunc)    (GNode         *node,
 796                                                  gpointer       data);
 797 typedef void            (*GNodeForeachFunc)     (GNode         *node,
 798                                                  gpointer       data);
 799 typedef gint            (*GSearchFunc)          (gpointer       key,
 800                                                  gpointer       data);
 801 typedef void            (*GScannerMsgFunc)      (GScanner      *scanner,
 802                                                  gchar         *message,
 803                                                  gint           error);
 804 typedef gint            (*GTraverseFunc)        (gpointer       key,
 805                                                  gpointer       value,
 806                                                  gpointer       data);
 807 typedef void            (*GVoidFunc)            (void);
 808
 809
 810 struct _GList
 811 {
 812   gpointer data;
 813   GList *next;
 814   GList *prev;
 815 };
 816
 817 struct _GSList
 818 {
 819   gpointer data;
 820   GSList *next;
 821 };
 822
 823 struct _GStack
 824 {
 825   GList *list;
 826 };
 827
 828 struct _GQueue
 829 {
 830   GList *list;
 831   GList *list_end;
 832   guint list_size;
 833 };
 834
 835 struct _GString
 836 {
 837   gchar *str;
 838   gint len;
 839 };
 840
 841 struct _GArray
 842 {
 843   gchar *data;
 844   guint len;
 845 };
 846
 847 struct _GByteArray
 848 {
 849   guint8 *data;
 850   guint   len;
 851 };
 852
 853 struct _GPtrArray
 854 {
 855   gpointer *pdata;
 856   guint     len;
 857 };
 858
 859 struct _GTuples
 860 {
 861   guint len;
 862 };
 863
 864 struct _GDebugKey
 865 {
 866   gchar *key;
 867   guint  value;
 868 };
 869
 870
 871 /* Doubly linked lists
 872  */
 873 void   g_list_push_allocator    (GAllocator     *allocator);
 874 void   g_list_pop_allocator     (void);
 875 GList* g_list_alloc             (void);
 876 void   g_list_free              (GList          *list);
 877 void   g_list_free_1            (GList          *list);
 878 GList* g_list_append            (GList          *list,
 879                                  gpointer        data);
 880 GList* g_list_prepend           (GList          *list,
 881                                  gpointer        data);
 882 GList* g_list_insert            (GList          *list,
 883                                  gpointer        data,
 884                                  gint            position);
 885 GList* g_list_insert_sorted     (GList          *list,
 886                                  gpointer        data,
 887                                  GCompareFunc    func);
 888 GList* g_list_concat            (GList          *list1,
 889                                  GList          *list2);
 890 GList* g_list_delete            (GList          *list,
 891                                  GList          *link);
 892 GList* g_list_remove            (GList          *list,
 893                                  gpointer        data);
 894 GList* g_list_remove_link       (GList          *list,
 895                                  GList          *llink);
 896 GList* g_list_reverse           (GList          *list);
 897 GList* g_list_copy              (GList          *list);
 898 GList* g_list_nth               (GList          *list,
 899                                  guint           n);
 900 GList* g_list_find              (GList          *list,
 901                                  gpointer        data);
 902 GList* g_list_find_custom       (GList          *list,
 903                                  gpointer        data,
 904                                  GCompareFunc    func);
 905 gint   g_list_position          (GList          *list,
 906                                  GList          *llink);
 907 gint   g_list_index             (GList          *list,
 908                                  gpointer        data);
 909 GList* g_list_last              (GList          *list);
 910 GList* g_list_first             (GList          *list);
 911 guint  g_list_length            (GList          *list);
 912 void   g_list_foreach           (GList          *list,
 913                                  GFunc           func,
 914                                  gpointer        user_data);
 915 GList* g_list_sort              (GList          *list,
 916                                  GCompareFunc    compare_func);
 917 gpointer g_list_nth_data        (GList          *list,
 918                                  guint           n);
 919 #define g_list_previous(list)   ((list) ? (((GList *)(list))->prev) : NULL)
 920 #define g_list_next(list)       ((list) ? (((GList *)(list))->next) : NULL)
 921
 922
 923 /* Singly linked lists
 924  */
 925 void    g_slist_push_allocator  (GAllocator     *allocator);
 926 void    g_slist_pop_allocator   (void);
 927 GSList* g_slist_alloc           (void);
 928 void    g_slist_free            (GSList         *list);
 929 void    g_slist_free_1          (GSList         *list);
 930 GSList* g_slist_append          (GSList         *list,
 931                                  gpointer        data);
 932 GSList* g_slist_prepend         (GSList         *list,
 933                                  gpointer        data);
 934 GSList* g_slist_insert          (GSList         *list,
 935                                  gpointer        data,
 936                                  gint            position);
 937 GSList* g_slist_insert_sorted   (GSList         *list,
 938                                  gpointer        data,
 939                                  GCompareFunc    func);
 940 GSList* g_slist_concat          (GSList         *list1,
 941                                  GSList         *list2);
 942 GSList* g_slist_remove          (GSList         *list,
 943                                  gpointer        data);
 944 GSList* g_slist_remove_link     (GSList         *list,
 945                                  GSList         *llink);
 946 GSList* g_slist_reverse         (GSList         *list);
 947 GSList* g_slist_copy            (GSList         *list);
 948 GSList* g_slist_nth             (GSList         *list,
 949                                  guint           n);
 950 GSList* g_slist_find            (GSList         *list,
 951                                  gpointer        data);
 952 GSList* g_slist_find_custom     (GSList         *list,
 953                                  gpointer        data,
 954                                  GCompareFunc    func);
 955 gint    g_slist_position        (GSList         *list,
 956                                  GSList         *llink);
 957 gint    g_slist_index           (GSList         *list,
 958                                  gpointer        data);
 959 GSList* g_slist_last            (GSList         *list);
 960 guint   g_slist_length          (GSList         *list);
 961 void    g_slist_foreach         (GSList         *list,
 962                                  GFunc           func,
 963                                  gpointer        user_data);
 964 GSList*  g_slist_sort           (GSList          *list,
 965                                  GCompareFunc    compare_func);
 966 gpointer g_slist_nth_data       (GSList         *list,
 967                                  guint           n);
 968 #define g_slist_next(slist)     ((slist) ? (((GSList *)(slist))->next) : NULL)
 969
 970
 971 /* Stacks
 972  */
 973
 974 GStack * g_stack_new    (void);
 975 void     g_stack_free   (GStack *stack);
 976 gpointer g_stack_pop    (GStack *stack);
 977
 978 #define g_stack_empty(stack) \
 979         ((((GStack *)(stack)) && ((GStack *)(stack))->list) ? FALSE : TRUE)
 980
 981 #define g_stack_peek(stack) \
 982         ((((GStack *)(stack)) && ((GStack *)(stack))->list) ? \
 983                 ((GStack *)(stack))->list->data : NULL)
 984
 985 #define g_stack_index(stack,ptr) \
 986         ((((GStack *)(stack)) && ((GStack *)(stack))->list) ? \
 987                 g_list_index (((GStack *)(stack))->list, (ptr)) : -1)
 988
 989 #define g_stack_push(stack,data) G_STMT_START {                         \
 990             if ((GStack *)(stack))                                      \
 991               ((GStack *)(stack))->list =                               \
 992                   g_list_prepend (((GStack *)(stack))->list, (data));   \
 993           } G_STMT_END
 994
 995
 996
 997 /* Queues
 998  */
 999
1000 GQueue *        g_queue_new             (void);
1001 void            g_queue_free            (GQueue *q);
1002 guint           g_queue_get_size        (GQueue *q);
1003 void            g_queue_push_front      (GQueue *q, gpointer data);
1004 void            g_queue_push_back       (GQueue *q, gpointer data);
1005 gpointer        g_queue_pop_front       (GQueue *q);
1006 gpointer        g_queue_pop_back        (GQueue *q);
1007
1008 #define g_queue_empty(queue) \
1009         ((((GQueue *)(queue)) && ((GQueue *)(queue))->list) ? FALSE : TRUE)
1010
1011 #define g_queue_peek_front(queue) \
1012         ((((GQueue *)(queue)) && ((GQueue *)(queue))->list) ? \
1013                 ((GQueue *)(queue))->list->data : NULL)
1014
1015 #define g_queue_peek_back(queue) \
1016         ((((GQueue *)(queue)) && ((GQueue *)(queue))->list_end) ? \
1017                 ((GQueue *)(queue))->list_end->data : NULL)
1018
1019 #define g_queue_index(queue,ptr) \
1020         ((((GQueue *)(queue)) && ((GQueue *)(queue))->list) ? \
1021                 g_list_index (((GQueue *)(queue))->list, (ptr)) : -1)
1022
1023 #define         g_queue_push            g_queue_push_back
1024 #define         g_queue_pop             g_queue_pop_front
1025 #define         g_queue_peek            g_queue_peek_front
1026
1027
1028
1029
1030
1031 /* Hash tables
1032  */
1033 GHashTable* g_hash_table_new            (GHashFunc       hash_func,
1034                                          GCompareFunc    key_compare_func);
1035 void        g_hash_table_destroy        (GHashTable     *hash_table);
1036 void        g_hash_table_insert         (GHashTable     *hash_table,
1037                                          gpointer        key,
1038                                          gpointer        value);
1039 void        g_hash_table_remove         (GHashTable     *hash_table,
1040                                          gconstpointer   key);
1041 gpointer    g_hash_table_lookup         (GHashTable     *hash_table,
1042                                          gconstpointer   key);
1043 gboolean    g_hash_table_lookup_extended(GHashTable     *hash_table,
1044                                          gconstpointer   lookup_key,
1045                                          gpointer       *orig_key,
1046                                          gpointer       *value);
1047 void        g_hash_table_freeze         (GHashTable     *hash_table);
1048 void        g_hash_table_thaw           (GHashTable     *hash_table);
1049 void        g_hash_table_foreach        (GHashTable     *hash_table,
1050                                          GHFunc          func,
1051                                          gpointer        user_data);
1052 guint       g_hash_table_foreach_remove (GHashTable     *hash_table,
1053                                          GHRFunc         func,
1054                                          gpointer        user_data);
1055 guint       g_hash_table_size           (GHashTable     *hash_table);
1056
1057
1058 /* Caches
1059  */
1060 GCache*  g_cache_new           (GCacheNewFunc      value_new_func,
1061                                 GCacheDestroyFunc  value_destroy_func,
1062                                 GCacheDupFunc      key_dup_func,
1063                                 GCacheDestroyFunc  key_destroy_func,
1064                                 GHashFunc          hash_key_func,
1065                                 GHashFunc          hash_value_func,
1066                                 GCompareFunc       key_compare_func);
1067 void     g_cache_destroy       (GCache            *cache);
1068 gpointer g_cache_insert        (GCache            *cache,
1069                                 gpointer           key);
1070 void     g_cache_remove        (GCache            *cache,
1071                                 gpointer           value);
1072 void     g_cache_key_foreach   (GCache            *cache,
1073                                 GHFunc             func,
1074                                 gpointer           user_data);
1075 void     g_cache_value_foreach (GCache            *cache,
1076                                 GHFunc             func,
1077                                 gpointer           user_data);
1078
1079
1080 /* Balanced binary trees
1081  */
1082 GTree*   g_tree_new      (GCompareFunc   key_compare_func);
1083 void     g_tree_destroy  (GTree         *tree);
1084 void     g_tree_insert   (GTree         *tree,
1085                           gpointer       key,
1086                           gpointer       value);
1087 void     g_tree_remove   (GTree         *tree,
1088                           gpointer       key);
1089 gpointer g_tree_lookup   (GTree         *tree,
1090                           gpointer       key);
1091 void     g_tree_traverse (GTree         *tree,
1092                           GTraverseFunc  traverse_func,
1093                           GTraverseType  traverse_type,
1094                           gpointer       data);
1095 gpointer g_tree_search   (GTree         *tree,
1096                           GSearchFunc    search_func,
1097                           gpointer       data);
1098 gint     g_tree_height   (GTree         *tree);
1099 gint     g_tree_nnodes   (GTree         *tree);
1100
1101
1102
1103 /* N-way tree implementation
1104  */
1105 struct _GNode
1106 {
1107   gpointer data;
1108   GNode   *next;
1109   GNode   *prev;
1110   GNode   *parent;
1111   GNode   *children;
1112 };
1113
1114 #define  G_NODE_IS_ROOT(node)   (((GNode*) (node))->parent == NULL && \
1115                                  ((GNode*) (node))->prev == NULL && \
1116                                  ((GNode*) (node))->next == NULL)
1117 #define  G_NODE_IS_LEAF(node)   (((GNode*) (node))->children == NULL)
1118
1119 void     g_node_push_allocator  (GAllocator       *allocator);
1120 void     g_node_pop_allocator   (void);
1121 GNode*   g_node_new             (gpointer          data);
1122 void     g_node_destroy         (GNode            *root);
1123 void     g_node_unlink          (GNode            *node);
1124 GNode*   g_node_insert          (GNode            *parent,
1125                                  gint              position,
1126                                  GNode            *node);
1127 GNode*   g_node_insert_before   (GNode            *parent,
1128                                  GNode            *sibling,
1129                                  GNode            *node);
1130 GNode*   g_node_prepend         (GNode            *parent,
1131                                  GNode            *node);
1132 guint    g_node_n_nodes         (GNode            *root,
1133                                  GTraverseFlags    flags);
1134 GNode*   g_node_get_root        (GNode            *node);
1135 gboolean g_node_is_ancestor     (GNode            *node,
1136                                  GNode            *descendant);
1137 guint    g_node_depth           (GNode            *node);
1138 GNode*   g_node_find            (GNode            *root,
1139                                  GTraverseType     order,
1140                                  GTraverseFlags    flags,
1141                                  gpointer          data);
1142
1143 /* convenience macros */
1144 #define g_node_append(parent, node)                             \
1145      g_node_insert_before ((parent), NULL, (node))
1146 #define g_node_insert_data(parent, position, data)              \
1147      g_node_insert ((parent), (position), g_node_new (data))
1148 #define g_node_insert_data_before(parent, sibling, data)        \
1149      g_node_insert_before ((parent), (sibling), g_node_new (data))
1150 #define g_node_prepend_data(parent, data)                       \
1151      g_node_prepend ((parent), g_node_new (data))
1152 #define g_node_append_data(parent, data)                        \
1153      g_node_insert_before ((parent), NULL, g_node_new (data))
1154
1155 /* traversal function, assumes that `node' is root
1156  * (only traverses `node' and its subtree).
1157  * this function is just a high level interface to
1158  * low level traversal functions, optimized for speed.
1159  */
1160 void     g_node_traverse        (GNode            *root,
1161                                  GTraverseType     order,
1162                                  GTraverseFlags    flags,
1163                                  gint              max_depth,
1164                                  GNodeTraverseFunc func,
1165                                  gpointer          data);
1166
1167 /* return the maximum tree height starting with `node', this is an expensive
1168  * operation, since we need to visit all nodes. this could be shortened by
1169  * adding `guint height' to struct _GNode, but then again, this is not very
1170  * often needed, and would make g_node_insert() more time consuming.
1171  */
1172 guint    g_node_max_height       (GNode *root);
1173
1174 void     g_node_children_foreach (GNode           *node,
1175                                   GTraverseFlags   flags,
1176                                   GNodeForeachFunc func,
1177                                   gpointer         data);
1178 void     g_node_reverse_children (GNode           *node);
1179 guint    g_node_n_children       (GNode           *node);
1180 GNode*   g_node_nth_child        (GNode           *node,
1181                                   guint            n);
1182 GNode*   g_node_last_child       (GNode           *node);
1183 GNode*   g_node_find_child       (GNode           *node,
1184                                   GTraverseFlags   flags,
1185                                   gpointer         data);
1186 gint     g_node_child_position   (GNode           *node,
1187                                   GNode           *child);
1188 gint     g_node_child_index      (GNode           *node,
1189                                   gpointer         data);
1190
1191 GNode*   g_node_first_sibling    (GNode           *node);
1192 GNode*   g_node_last_sibling     (GNode           *node);
1193
1194 #define  g_node_prev_sibling(node)      ((node) ? \
1195                                          ((GNode*) (node))->prev : NULL)
1196 #define  g_node_next_sibling(node)      ((node) ? \
1197                                          ((GNode*) (node))->next : NULL)
1198 #define  g_node_first_child(node)       ((node) ? \
1199                                          ((GNode*) (node))->children : NULL)
1200
1201
1202 /* Callback maintenance functions
1203  */
1204 #define G_HOOK_FLAG_USER_SHIFT  (4)
1205 typedef enum
1206 {
1207   G_HOOK_FLAG_ACTIVE    = 1 << 0,
1208   G_HOOK_FLAG_IN_CALL   = 1 << 1,
1209   G_HOOK_FLAG_MASK      = 0x0f
1210 } GHookFlagMask;
1211
1212 #define G_HOOK_DEFERRED_DESTROY ((GHookFreeFunc) 0x01)
1213
1214 struct _GHookList
1215 {
1216   guint          seq_id;
1217   guint          hook_size;
1218   guint          is_setup : 1;
1219   GHook         *hooks;
1220   GMemChunk     *hook_memchunk;
1221   GHookFreeFunc  hook_free; /* virtual function */
1222   GHookFreeFunc  hook_destroy; /* virtual function */
1223 };
1224
1225 struct _GHook
1226 {
1227   gpointer       data;
1228   GHook         *next;
1229   GHook         *prev;
1230   guint          ref_count;
1231   guint          hook_id;
1232   guint          flags;
1233   gpointer       func;
1234   GDestroyNotify destroy;
1235 };
1236
1237 #define G_HOOK_ACTIVE(hook)             ((((GHook*) hook)->flags & \
1238                                           G_HOOK_FLAG_ACTIVE) != 0)
1239 #define G_HOOK_IN_CALL(hook)            ((((GHook*) hook)->flags & \
1240                                           G_HOOK_FLAG_IN_CALL) != 0)
1241 #define G_HOOK_IS_VALID(hook)           (((GHook*) hook)->hook_id != 0 && \
1242                                          G_HOOK_ACTIVE (hook))
1243 #define G_HOOK_IS_UNLINKED(hook)        (((GHook*) hook)->next == NULL && \
1244                                          ((GHook*) hook)->prev == NULL && \
1245                                          ((GHook*) hook)->hook_id == 0 && \
1246                                          ((GHook*) hook)->ref_count == 0)
1247
1248 void     g_hook_list_init               (GHookList              *hook_list,
1249                                          guint                   hook_size);
1250 void     g_hook_list_clear              (GHookList              *hook_list);
1251 GHook*   g_hook_alloc                   (GHookList              *hook_list);
1252 void     g_hook_free                    (GHookList              *hook_list,
1253                                          GHook                  *hook);
1254 void     g_hook_ref                     (GHookList              *hook_list,
1255                                          GHook                  *hook);
1256 void     g_hook_unref                   (GHookList              *hook_list,
1257                                          GHook                  *hook);
1258 gboolean g_hook_destroy                 (GHookList              *hook_list,
1259                                          guint                   hook_id);
1260 void     g_hook_destroy_link            (GHookList              *hook_list,
1261                                          GHook                  *hook);
1262 void     g_hook_prepend                 (GHookList              *hook_list,
1263                                          GHook                  *hook);
1264 void     g_hook_insert_before           (GHookList              *hook_list,
1265                                          GHook                  *sibling,
1266                                          GHook                  *hook);
1267 void     g_hook_insert_sorted           (GHookList              *hook_list,
1268                                          GHook                  *hook,
1269                                          GHookCompareFunc        func);
1270 GHook*   g_hook_get                     (GHookList              *hook_list,
1271                                          guint                   hook_id);
1272 GHook*   g_hook_find                    (GHookList              *hook_list,
1273                                          gboolean                need_valids,
1274                                          GHookFindFunc           func,
1275                                          gpointer                data);
1276 GHook*   g_hook_find_data               (GHookList              *hook_list,
1277                                          gboolean                need_valids,
1278                                          gpointer                data);
1279 GHook*   g_hook_find_func               (GHookList              *hook_list,
1280                                          gboolean                need_valids,
1281                                          gpointer                func);
1282 GHook*   g_hook_find_func_data          (GHookList              *hook_list,
1283                                          gboolean                need_valids,
1284                                          gpointer                func,
1285                                          gpointer                data);
1286 /* return the first valid hook, and increment its reference count */
1287 GHook*   g_hook_first_valid             (GHookList              *hook_list,
1288                                          gboolean                may_be_in_call);
1289 /* return the next valid hook with incremented reference count, and
1290  * decrement the reference count of the original hook
1291  */
1292 GHook*   g_hook_next_valid              (GHookList              *hook_list,
1293                                          GHook                  *hook,
1294                                          gboolean                may_be_in_call);
1295
1296 /* GHookCompareFunc implementation to insert hooks sorted by their id */
1297 gint     g_hook_compare_ids             (GHook                  *new_hook,
1298                                          GHook                  *sibling);
1299
1300 /* convenience macros */
1301 #define  g_hook_append( hook_list, hook )  \
1302      g_hook_insert_before ((hook_list), NULL, (hook))
1303
1304 /* invoke all valid hooks with the (*GHookFunc) signature.
1305  */
1306 void     g_hook_list_invoke             (GHookList              *hook_list,
1307                                          gboolean                may_recurse);
1308 /* invoke all valid hooks with the (*GHookCheckFunc) signature,
1309  * and destroy the hook if FALSE is returned.
1310  */
1311 void     g_hook_list_invoke_check       (GHookList              *hook_list,
1312                                          gboolean                may_recurse);
1313 /* invoke a marshaller on all valid hooks.
1314  */
1315 void     g_hook_list_marshal            (GHookList              *hook_list,
1316                                          gboolean                may_recurse,
1317                                          GHookMarshaller         marshaller,
1318                                          gpointer                data);
1319 void     g_hook_list_marshal_check      (GHookList              *hook_list,
1320                                          gboolean                may_recurse,
1321                                          GHookCheckMarshaller    marshaller,
1322                                          gpointer                data);
1323
1324
1325 /* Fatal error handlers.
1326  * g_on_error_query() will prompt the user to either
1327  * [E]xit, [H]alt, [P]roceed or show [S]tack trace.
1328  * g_on_error_stack_trace() invokes gdb, which attaches to the current
1329  * process and shows a stack trace.
1330  * These function may cause different actions on non-unix platforms.
1331  * The prg_name arg is required by gdb to find the executable, if it is
1332  * passed as NULL, g_on_error_query() will try g_get_prgname().
1333  */
1334 void g_on_error_query (const gchar *prg_name);
1335 void g_on_error_stack_trace (const gchar *prg_name);
1336
1337
1338 /* Logging mechanism
1339  */
1340 extern          const gchar             *g_log_domain_glib;
1341 guint           g_log_set_handler       (const gchar    *log_domain,
1342                                          GLogLevelFlags  log_levels,
1343                                          GLogFunc        log_func,
1344                                          gpointer        user_data);
1345 void            g_log_remove_handler    (const gchar    *log_domain,
1346                                          guint           handler_id);
1347 void            g_log_default_handler   (const gchar    *log_domain,
1348                                          GLogLevelFlags  log_level,
1349                                          const gchar    *message,
1350                                          gpointer        unused_data);
1351 void            g_log                   (const gchar    *log_domain,
1352                                          GLogLevelFlags  log_level,
1353                                          const gchar    *format,
1354                                          ...) G_GNUC_PRINTF (3, 4);
1355 void            g_logv                  (const gchar    *log_domain,
1356                                          GLogLevelFlags  log_level,
1357                                          const gchar    *format,
1358                                          va_list         args);
1359 GLogLevelFlags  g_log_set_fatal_mask    (const gchar    *log_domain,
1360                                          GLogLevelFlags  fatal_mask);
1361 GLogLevelFlags  g_log_set_always_fatal  (GLogLevelFlags  fatal_mask);
1362 #ifndef G_LOG_DOMAIN
1363 #define G_LOG_DOMAIN    ((gchar*) 0)
1364 #endif  /* G_LOG_DOMAIN */
1365 #ifdef  __GNUC__
1366 #define g_error(format, args...)        g_log (G_LOG_DOMAIN, \
1367                                                G_LOG_LEVEL_ERROR, \
1368                                                format, ##args)
1369 #define g_message(format, args...)      g_log (G_LOG_DOMAIN, \
1370                                                G_LOG_LEVEL_MESSAGE, \
1371                                                format, ##args)
1372 #define g_warning(format, args...)      g_log (G_LOG_DOMAIN, \
1373                                                G_LOG_LEVEL_WARNING, \
1374                                                format, ##args)
1375 #else   /* !__GNUC__ */
1376 static void
1377 g_error (const gchar *format,
1378          ...)
1379 {
1380   va_list args;
1381   va_start (args, format);
1382   g_logv (G_LOG_DOMAIN, G_LOG_LEVEL_ERROR, format, args);
1383   va_end (args);
1384 }
1385 static void
1386 g_message (const gchar *format,
1387            ...)
1388 {
1389   va_list args;
1390   va_start (args, format);
1391   g_logv (G_LOG_DOMAIN, G_LOG_LEVEL_MESSAGE, format, args);
1392   va_end (args);
1393 }
1394 static void
1395 g_warning (const gchar *format,
1396            ...)
1397 {
1398   va_list args;
1399   va_start (args, format);
1400   g_logv (G_LOG_DOMAIN, G_LOG_LEVEL_WARNING, format, args);
1401   va_end (args);
1402 }
1403 #endif  /* !__GNUC__ */
1404
1405 typedef void    (*GPrintFunc)           (const gchar    *string);
1406 void            g_print                 (const gchar    *format,
1407                                          ...) G_GNUC_PRINTF (1, 2);
1408 GPrintFunc      g_set_print_handler     (GPrintFunc      func);
1409 void            g_printerr              (const gchar    *format,
1410                                          ...) G_GNUC_PRINTF (1, 2);
1411 GPrintFunc      g_set_printerr_handler  (GPrintFunc      func);
1412
1413 /* deprecated compatibility functions, use g_log_set_handler() instead */
1414 typedef void            (*GErrorFunc)           (const gchar *str);
1415 typedef void            (*GWarningFunc)         (const gchar *str);
1416 GErrorFunc   g_set_error_handler   (GErrorFunc   func);
1417 GWarningFunc g_set_warning_handler (GWarningFunc func);
1418 GPrintFunc   g_set_message_handler (GPrintFunc func);
1419
1420
1421 /* Memory allocation and debugging
1422  */
1423 #ifdef USE_DMALLOC
1424
1425 #define g_malloc(size)       ((gpointer) MALLOC (size))
1426 #define g_malloc0(size)      ((gpointer) CALLOC (char, size))
1427 #define g_realloc(mem,size)  ((gpointer) REALLOC (mem, char, size))
1428 #define g_free(mem)          FREE (mem)
1429
1430 #else /* !USE_DMALLOC */
1431
1432 gpointer g_malloc      (gulong    size);
1433 gpointer g_malloc0     (gulong    size);
1434 gpointer g_realloc     (gpointer  mem,
1435                         gulong    size);
1436 void     g_free        (gpointer  mem);
1437
1438 #endif /* !USE_DMALLOC */
1439
1440 void     g_mem_profile (void);
1441 void     g_mem_check   (gpointer  mem);
1442
1443 /* Generic allocators
1444  */
1445 GAllocator* g_allocator_new   (const gchar  *name,
1446                                guint         n_preallocs);
1447 void        g_allocator_free  (GAllocator   *allocator);
1448
1449 #define G_ALLOCATOR_LIST        (1)
1450 #define G_ALLOCATOR_SLIST       (2)
1451 #define G_ALLOCATOR_NODE        (3)
1452
1453
1454 /* "g_mem_chunk_new" creates a new memory chunk.
1455  * Memory chunks are used to allocate pieces of memory which are
1456  *  always the same size. Lists are a good example of such a data type.
1457  * The memory chunk allocates and frees blocks of memory as needed.
1458  *  Just be sure to call "g_mem_chunk_free" and not "g_free" on data
1459  *  allocated in a mem chunk. ("g_free" will most likely cause a seg
1460  *  fault...somewhere).
1461  *
1462  * Oh yeah, GMemChunk is an opaque data type. (You don't really
1463  *  want to know what's going on inside do you?)
1464  */
1465
1466 /* ALLOC_ONLY MemChunk's can only allocate memory. The free operation
1467  *  is interpreted as a no op. ALLOC_ONLY MemChunk's save 4 bytes per
1468  *  atom. (They are also useful for lists which use MemChunk to allocate
1469  *  memory but are also part of the MemChunk implementation).
1470  * ALLOC_AND_FREE MemChunk's can allocate and free memory.
1471  */
1472
1473 #define G_ALLOC_ONLY      1
1474 #define G_ALLOC_AND_FREE  2
1475
1476 GMemChunk* g_mem_chunk_new     (gchar     *name,
1477                                 gint       atom_size,
1478                                 gulong     area_size,
1479                                 gint       type);
1480 void       g_mem_chunk_destroy (GMemChunk *mem_chunk);
1481 gpointer   g_mem_chunk_alloc   (GMemChunk *mem_chunk);
1482 gpointer   g_mem_chunk_alloc0  (GMemChunk *mem_chunk);
1483 void       g_mem_chunk_free    (GMemChunk *mem_chunk,
1484                                 gpointer   mem);
1485 void       g_mem_chunk_clean   (GMemChunk *mem_chunk);
1486 void       g_mem_chunk_reset   (GMemChunk *mem_chunk);
1487 void       g_mem_chunk_print   (GMemChunk *mem_chunk);
1488 void       g_mem_chunk_info    (void);
1489
1490 /* Ah yes...we have a "g_blow_chunks" function.
1491  * "g_blow_chunks" simply compresses all the chunks. This operation
1492  *  consists of freeing every memory area that should be freed (but
1493  *  which we haven't gotten around to doing yet). And, no,
1494  *  "g_blow_chunks" doesn't follow the naming scheme, but it is a
1495  *  much better name than "g_mem_chunk_clean_all" or something
1496  *  similar.
1497  */
1498 void g_blow_chunks (void);
1499
1500
1501 /* Timer
1502  */
1503
1504 #define G_MICROSEC 1000000
1505
1506 GTimer* g_timer_new     (void);
1507 void    g_timer_destroy (GTimer  *timer);
1508 void    g_timer_start   (GTimer  *timer);
1509 void    g_timer_stop    (GTimer  *timer);
1510 void    g_timer_reset   (GTimer  *timer);
1511 gdouble g_timer_elapsed (GTimer  *timer,
1512                          gulong  *microseconds);
1513 void    g_usleep        (gulong microseconds);
1514
1515 /* String utility functions that modify a string argument or
1516  * return a constant string that must not be freed.
1517  */
1518 #define  G_STR_DELIMITERS       "_-|> <."
1519 gchar*   g_strdelimit           (gchar       *string,
1520                                  const gchar *delimiters,
1521                                  gchar        new_delimiter);
1522 gdouble  g_strtod               (const gchar *nptr,
1523                                  gchar      **endptr);
1524 gchar*   g_strerror             (gint         errnum);
1525 gchar*   g_strsignal            (gint         signum);
1526 gint     g_strcasecmp           (const gchar *s1,
1527                                  const gchar *s2);
1528 gint     g_strncasecmp          (const gchar *s1,
1529                                  const gchar *s2,
1530                                  guint        n);
1531 void     g_strdown              (gchar       *string);
1532 void     g_strup                (gchar       *string);
1533 void     g_strreverse           (gchar       *string);
1534 /* removes leading spaces */
1535 gchar*   g_strchug              (gchar        *string);
1536 /* removes trailing spaces */
1537 gchar*  g_strchomp              (gchar        *string);
1538 /* removes leading & trailing spaces */
1539 #define g_strstrip( string )    g_strchomp (g_strchug (string))
1540
1541 /* String utility functions that return a newly allocated string which
1542  * ought to be freed from the caller at some point.
1543  */
1544 gchar*   g_strdup               (const gchar *str);
1545 gchar*   g_strdup_printf        (const gchar *format,
1546                                  ...) G_GNUC_PRINTF (1, 2);
1547 gchar*   g_strdup_vprintf       (const gchar *format,
1548                                  va_list      args);
1549 gchar*   g_strndup              (const gchar *str,
1550                                  guint        n);
1551 gchar*   g_strnfill             (guint        length,
1552                                  gchar        fill_char);
1553 gchar*   g_strconcat            (const gchar *string1,
1554                                  ...); /* NULL terminated */
1555 gchar*   g_strjoin              (const gchar  *separator,
1556                                  ...); /* NULL terminated */
1557 /* Return a duplicate of the string with \ and " characters escaped by
1558  * a \. The returned string should be freed with g_free().
1559  */
1560 gchar*   g_strescape            (gchar        *string);
1561
1562 gpointer g_memdup               (gconstpointer mem,
1563                                  guint         byte_size);
1564
1565 /* NULL terminated string arrays.
1566  * g_strsplit() splits up string into max_tokens tokens at delim and
1567  * returns a newly allocated string array.
1568  * g_strjoinv() concatenates all of str_array's strings, sliding in an
1569  * optional separator, the returned string is newly allocated.
1570  * g_strfreev() frees the array itself and all of its strings.
1571  */
1572 gchar**  g_strsplit             (const gchar  *string,
1573                                  const gchar  *delimiter,
1574                                  gint          max_tokens);
1575 gchar*   g_strjoinv             (const gchar  *separator,
1576                                  gchar       **str_array);
1577 void     g_strfreev             (gchar       **str_array);
1578
1579
1580
1581 /* calculate a string size, guarranteed to fit format + args.
1582  */
1583 guint   g_printf_string_upper_bound (const gchar* format,
1584                                      va_list      args);
1585
1586
1587 /* Retrive static string info
1588  */
1589 gchar*  g_get_user_name         (void);
1590 gchar*  g_get_real_name         (void);
1591 gchar*  g_get_home_dir          (void);
1592 gchar*  g_get_tmp_dir           (void);
1593 gchar*  g_get_prgname           (void);
1594 void    g_set_prgname           (const gchar *prgname);
1595
1596
1597 /* Miscellaneous utility functions
1598  */
1599 guint   g_parse_debug_string    (const gchar *string,
1600                                  GDebugKey   *keys,
1601                                  guint        nkeys);
1602 gint    g_snprintf              (gchar       *string,
1603                                  gulong       n,
1604                                  gchar const *format,
1605                                  ...) G_GNUC_PRINTF (3, 4);
1606 gint    g_vsnprintf             (gchar       *string,
1607                                  gulong       n,
1608                                  gchar const *format,
1609                                  va_list      args);
1610 gchar*  g_basename              (const gchar *file_name);
1611 /* Check if a file name is an absolute path */
1612 gboolean g_path_is_absolute     (const gchar *file_name);
1613 /* In case of absolute paths, skip the root part */
1614 gchar*  g_path_skip_root        (gchar       *file_name);
1615
1616 /* strings are newly allocated with g_malloc() */
1617 gchar*  g_dirname               (const gchar *file_name);
1618 gchar*  g_get_current_dir       (void);
1619 gchar*  g_getenv                (const gchar *variable);
1620
1621
1622 /* we use a GLib function as a replacement for ATEXIT, so
1623  * the programmer is not required to check the return value
1624  * (if there is any in the implementation) and doesn't encounter
1625  * missing include files.
1626  */
1627 void    g_atexit                (GVoidFunc    func);
1628
1629
1630 /* Bit tests
1631  */
1632 G_INLINE_FUNC gint      g_bit_nth_lsf (guint32 mask,
1633                                        gint    nth_bit);
1634 #ifdef  G_CAN_INLINE
1635 G_INLINE_FUNC gint
1636 g_bit_nth_lsf (guint32 mask,
1637                gint    nth_bit)
1638 {
1639   do
1640     {
1641       nth_bit++;
1642       if (mask & (1 << (guint) nth_bit))
1643         return nth_bit;
1644     }
1645   while (nth_bit < 32);
1646   return -1;
1647 }
1648 #endif  /* G_CAN_INLINE */
1649
1650 G_INLINE_FUNC gint      g_bit_nth_msf (guint32 mask,
1651                                        gint    nth_bit);
1652 #ifdef G_CAN_INLINE
1653 G_INLINE_FUNC gint
1654 g_bit_nth_msf (guint32 mask,
1655                gint    nth_bit)
1656 {
1657   if (nth_bit < 0)
1658     nth_bit = 32;
1659   do
1660     {
1661       nth_bit--;
1662       if (mask & (1 << (guint) nth_bit))
1663         return nth_bit;
1664     }
1665   while (nth_bit > 0);
1666   return -1;
1667 }
1668 #endif  /* G_CAN_INLINE */
1669
1670 G_INLINE_FUNC guint     g_bit_storage (guint number);
1671 #ifdef G_CAN_INLINE
1672 G_INLINE_FUNC guint
1673 g_bit_storage (guint number)
1674 {
1675   register guint n_bits = 0;
1676
1677   do
1678     {
1679       n_bits++;
1680       number >>= 1;
1681     }
1682   while (number);
1683   return n_bits;
1684 }
1685 #endif  /* G_CAN_INLINE */
1686
1687 /* String Chunks
1688  */
1689 GStringChunk* g_string_chunk_new           (gint size);
1690 void          g_string_chunk_free          (GStringChunk *chunk);
1691 gchar*        g_string_chunk_insert        (GStringChunk *chunk,
1692                                             const gchar  *string);
1693 gchar*        g_string_chunk_insert_const  (GStringChunk *chunk,
1694                                             const gchar  *string);
1695
1696
1697 /* Strings
1698  */
1699 typedef enum
1700 {
1701   G_STRING_ERROR_NONE,    /* No error occurred */
1702   G_STRING_ERROR_INVAL,   /* Invalid input value to function */
1703   G_STRING_ERROR_READ,    /* read() returned an error - check errno */
1704   G_STRING_ERROR_NODATA,  /* No more input data - result string may contain data */
1705   G_STRING_ERROR_LENGTH   /* max_length reached */
1706 } GStringError;
1707
1708 #define      g_string_length(fstring)    (fstring ? fstring->len : 0)
1709 #define      g_string_str(fstring)       (fstring ? fstring->str : NULL)
1710 #define      g_string_char(fstring, n)   (fstring->str[n])
1711
1712 #define      g_string_copy(a,b)          (g_string_assign(a, b->str))
1713 #define      g_string_dup(fstring)       (fstring ? g_string_new(fstring->str) :\
1714                                                     g_string_new(NULL))
1715
1716 #define      g_string_cmp(a,b)           (strcmp(g_string_str(a), \
1717                                                  g_string_str(b)))
1718 #define      g_string_ncmp(a,b,n)        (strncmp(g_string_str(a), \
1719                                                   g_string_str(b), n))
1720 #define      g_string_casecmp(a,b)       (g_strcasecmp(g_string_str(a), \
1721                                                        g_string_str(b)))
1722 #define      g_string_ncasecmp(a,b,n)    (g_strncasecmp(g_string_str(a), \
1723                                                         g_string_str(b), n))
1724
1725 #define      g_string_strcmp(a,b)        (strcmp(g_string_str(a), b))
1726 #define      g_string_strcasecmp(a,b)    (g_strcasecmp(g_string_str(a), b))
1727 #define      g_string_strncasecmp(a,b,n) (g_strncasecmp(g_string_str(a), b, n))
1728
1729 GString*     g_string_new               (const gchar     *init);
1730 GString*     g_string_sized_new         (guint            dfl_size);
1731 void         g_string_free              (GString         *string,
1732                                          gint             free_segment);
1733 GString*     g_string_assign            (GString         *lval,
1734                                          const gchar     *rval);
1735 GString*     g_string_truncate          (GString         *string,
1736                                          gint             len);
1737 GString*     g_string_append            (GString         *string,
1738                                          const gchar     *val);
1739 GString*     g_string_append_c          (GString         *string,
1740                                          gchar            c);
1741 GString*     g_string_prepend           (GString         *string,
1742                                          const gchar     *val);
1743 GString*     g_string_prepend_c         (GString         *string,
1744                                          gchar            c);
1745 GString*     g_string_insert            (GString         *string,
1746                                          gint             pos,
1747                                          const gchar     *val);
1748 GString*     g_string_insert_c          (GString         *string,
1749                                          gint             pos,
1750                                          gchar            c);
1751 GString*     g_string_erase             (GString         *string,
1752                                          gint             pos,
1753                                          gint             len);
1754 GString*     g_string_down              (GString         *string);
1755 GString*     g_string_up                (GString         *string);
1756 void         g_string_sprintf           (GString         *string,
1757                                          const gchar     *format,
1758                                          ...) G_GNUC_PRINTF (2, 3);
1759 void         g_string_sprintfa          (GString         *string,
1760                                          const gchar     *format,
1761                                          ...) G_GNUC_PRINTF (2, 3);
1762 GStringError g_string_readline          (GString         *dest_str,
1763                                          gint            max_length,
1764                                          gint            fd);
1765 GStringError g_string_readline_buffered (GString         *dest_str,
1766                                          GString         *buff_str,
1767                                          gint             max_length,
1768                                          gint             fd,
1769                                          gint             match_bare_cr);
1770 GList*       g_string_tokenise          (GString         *string,
1771                                          gchar           *delims,
1772                                          gint             max_tokens,
1773                                          gint             allow_empty);
1774 void         g_string_tokenise_free     (GList           *tokens,
1775                                          gint             free_token);
1776
1777
1778 /* Resizable arrays, remove fills any cleared spot and shortens the
1779  * array, while preserving the order. remove_fast will distort the
1780  * order by moving the last element to the position of the removed
1781  */
1782
1783 #define g_array_append_val(a,v)   g_array_append_vals (a, &v, 1)
1784 #define g_array_prepend_val(a,v)  g_array_prepend_vals (a, &v, 1)
1785 #define g_array_insert_val(a,i,v) g_array_insert_vals (a, i, &v, 1)
1786 #define g_array_index(a,t,i)      (((t*) (a)->data) [(i)])
1787
1788 GArray* g_array_new               (gboolean         zero_terminated,
1789                                    gboolean         clear,
1790                                    guint            element_size);
1791 void    g_array_free              (GArray          *array,
1792                                    gboolean         free_segment);
1793 GArray* g_array_append_vals       (GArray          *array,
1794                                    gconstpointer    data,
1795                                    guint            len);
1796 GArray* g_array_prepend_vals      (GArray          *array,
1797                                    gconstpointer    data,
1798                                    guint            len);
1799 GArray* g_array_insert_vals       (GArray          *array,
1800                                    guint            index,
1801                                    gconstpointer    data,
1802                                    guint            len);
1803 GArray* g_array_set_size          (GArray          *array,
1804                                    guint            length);
1805 GArray* g_array_remove_index      (GArray          *array,
1806                                    guint            index);
1807 GArray* g_array_remove_index_fast (GArray          *array,
1808                                    guint            index);
1809
1810 /* Resizable pointer array.  This interface is much less complicated
1811  * than the above.  Add appends appends a pointer.  Remove fills any
1812  * cleared spot and shortens the array. remove_fast will again distort
1813  * order.
1814  */
1815 #define     g_ptr_array_index(array,index) (array->pdata)[index]
1816 GPtrArray*  g_ptr_array_new                (void);
1817 void        g_ptr_array_free               (GPtrArray   *array,
1818                                             gboolean     free_seg);
1819 void        g_ptr_array_set_size           (GPtrArray   *array,
1820                                             gint         length);
1821 gpointer    g_ptr_array_remove_index       (GPtrArray   *array,
1822                                             guint        index);
1823 gpointer    g_ptr_array_remove_index_fast  (GPtrArray   *array,
1824                                             guint        index);
1825 gboolean    g_ptr_array_remove             (GPtrArray   *array,
1826                                             gpointer     data);
1827 gboolean    g_ptr_array_remove_fast        (GPtrArray   *array,
1828                                             gpointer     data);
1829 void        g_ptr_array_add                (GPtrArray   *array,
1830                                             gpointer     data);
1831
1832 /* Byte arrays, an array of guint8.  Implemented as a GArray,
1833  * but type-safe.
1834  */
1835
1836 GByteArray* g_byte_array_new               (void);
1837 void        g_byte_array_free              (GByteArray   *array,
1838                                             gboolean      free_segment);
1839 GByteArray* g_byte_array_append            (GByteArray   *array,
1840                                             const guint8 *data,
1841                                             guint         len);
1842 GByteArray* g_byte_array_prepend           (GByteArray   *array,
1843                                             const guint8 *data,
1844                                             guint         len);
1845 GByteArray* g_byte_array_set_size          (GByteArray   *array,
1846                                             guint         length);
1847 GByteArray* g_byte_array_remove_index      (GByteArray   *array,
1848                                             guint         index);
1849 GByteArray* g_byte_array_remove_index_fast (GByteArray   *array,
1850                                             guint         index);
1851
1852
1853 /* Hash Functions
1854  */
1855 gint  g_str_equal (gconstpointer   v,
1856                    gconstpointer   v2);
1857 guint g_str_hash  (gconstpointer   v);
1858
1859 gint  g_int_equal (gconstpointer   v,
1860                    gconstpointer   v2);
1861 guint g_int_hash  (gconstpointer   v);
1862
1863 /* This "hash" function will just return the key's adress as an
1864  * unsigned integer. Useful for hashing on plain adresses or
1865  * simple integer values.
1866  * passing NULL into g_hash_table_new() as GHashFunc has the
1867  * same effect as passing g_direct_hash().
1868  */
1869 guint g_direct_hash  (gconstpointer v);
1870 gint  g_direct_equal (gconstpointer v,
1871                       gconstpointer v2);
1872
1873
1874 /* Quarks (string<->id association)
1875  */
1876 GQuark    g_quark_try_string            (const gchar    *string);
1877 GQuark    g_quark_from_static_string    (const gchar    *string);
1878 GQuark    g_quark_from_string           (const gchar    *string);
1879 gchar*    g_quark_to_string             (GQuark          quark);
1880
1881
1882 /* Keyed Data List
1883  */
1884 void      g_datalist_init                (GData          **datalist);
1885 void      g_datalist_clear               (GData          **datalist);
1886 gpointer  g_datalist_id_get_data         (GData          **datalist,
1887                                           GQuark           key_id);
1888 void      g_datalist_id_set_data_full    (GData          **datalist,
1889                                           GQuark           key_id,
1890                                           gpointer         data,
1891                                           GDestroyNotify   destroy_func);
1892 void      g_datalist_id_remove_no_notify (GData          **datalist,
1893                                           GQuark           key_id);
1894 void      g_datalist_foreach             (GData          **datalist,
1895                                           GDataForeachFunc func,
1896                                           gpointer         user_data);
1897 #define   g_datalist_id_set_data(dl, q, d)      \
1898      g_datalist_id_set_data_full ((dl), (q), (d), NULL)
1899 #define   g_datalist_id_remove_data(dl, q)      \
1900      g_datalist_id_set_data ((dl), (q), NULL)
1901 #define   g_datalist_get_data(dl, k)            \
1902      (g_datalist_id_get_data ((dl), g_quark_try_string (k)))
1903 #define   g_datalist_set_data_full(dl, k, d, f) \
1904      g_datalist_id_set_data_full ((dl), g_quark_from_string (k), (d), (f))
1905 #define   g_datalist_remove_no_notify(dl, k)    \
1906      g_datalist_id_remove_no_notify ((dl), g_quark_try_string (k))
1907 #define   g_datalist_set_data(dl, k, d)         \
1908      g_datalist_set_data_full ((dl), (k), (d), NULL)
1909 #define   g_datalist_remove_data(dl, k)         \
1910      g_datalist_id_set_data ((dl), g_quark_try_string (k), NULL)
1911
1912
1913 /* Location Associated Keyed Data
1914  */
1915 void      g_dataset_destroy             (gconstpointer    dataset_location);
1916 gpointer  g_dataset_id_get_data         (gconstpointer    dataset_location,
1917                                          GQuark           key_id);
1918 void      g_dataset_id_set_data_full    (gconstpointer    dataset_location,
1919                                          GQuark           key_id,
1920                                          gpointer         data,
1921                                          GDestroyNotify   destroy_func);
1922 void      g_dataset_id_remove_no_notify (gconstpointer    dataset_location,
1923                                          GQuark           key_id);
1924 void      g_dataset_foreach             (gconstpointer    dataset_location,
1925                                          GDataForeachFunc func,
1926                                          gpointer         user_data);
1927 #define   g_dataset_id_set_data(l, k, d)        \
1928      g_dataset_id_set_data_full ((l), (k), (d), NULL)
1929 #define   g_dataset_id_remove_data(l, k)        \
1930      g_dataset_id_set_data ((l), (k), NULL)
1931 #define   g_dataset_get_data(l, k)              \
1932      (g_dataset_id_get_data ((l), g_quark_try_string (k)))
1933 #define   g_dataset_set_data_full(l, k, d, f)   \
1934      g_dataset_id_set_data_full ((l), g_quark_from_string (k), (d), (f))
1935 #define   g_dataset_remove_no_notify(l, k)      \
1936      g_dataset_id_remove_no_notify ((l), g_quark_try_string (k))
1937 #define   g_dataset_set_data(l, k, d)           \
1938      g_dataset_set_data_full ((l), (k), (d), NULL)
1939 #define   g_dataset_remove_data(l, k)           \
1940      g_dataset_id_set_data ((l), g_quark_try_string (k), NULL)
1941
1942
1943 /* GScanner: Flexible lexical scanner for general purpose.
1944  */
1945
1946 /* Character sets */
1947 #define G_CSET_A_2_Z    "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
1948 #define G_CSET_a_2_z    "abcdefghijklmnopqrstuvwxyz"
1949 #define G_CSET_LATINC   "\300\301\302\303\304\305\306"\
1950                         "\307\310\311\312\313\314\315\316\317\320"\
1951                         "\321\322\323\324\325\326"\
1952                         "\330\331\332\333\334\335\336"
1953 #define G_CSET_LATINS   "\337\340\341\342\343\344\345\346"\
1954                         "\347\350\351\352\353\354\355\356\357\360"\
1955                         "\361\362\363\364\365\366"\
1956                         "\370\371\372\373\374\375\376\377"
1957
1958 /* Error types */
1959 typedef enum
1960 {
1961   G_ERR_UNKNOWN,
1962   G_ERR_UNEXP_EOF,
1963   G_ERR_UNEXP_EOF_IN_STRING,
1964   G_ERR_UNEXP_EOF_IN_COMMENT,
1965   G_ERR_NON_DIGIT_IN_CONST,
1966   G_ERR_DIGIT_RADIX,
1967   G_ERR_FLOAT_RADIX,
1968   G_ERR_FLOAT_MALFORMED
1969 } GErrorType;
1970
1971 /* Token types */
1972 typedef enum
1973 {
1974   G_TOKEN_EOF                   =   0,
1975
1976   G_TOKEN_LEFT_PAREN            = '(',
1977   G_TOKEN_RIGHT_PAREN           = ')',
1978   G_TOKEN_LEFT_CURLY            = '{',
1979   G_TOKEN_RIGHT_CURLY           = '}',
1980   G_TOKEN_LEFT_BRACE            = '[',
1981   G_TOKEN_RIGHT_BRACE           = ']',
1982   G_TOKEN_EQUAL_SIGN            = '=',
1983   G_TOKEN_COMMA                 = ',',
1984
1985   G_TOKEN_NONE                  = 256,
1986
1987   G_TOKEN_ERROR,
1988
1989   G_TOKEN_CHAR,
1990   G_TOKEN_BINARY,
1991   G_TOKEN_OCTAL,
1992   G_TOKEN_INT,
1993   G_TOKEN_HEX,
1994   G_TOKEN_FLOAT,
1995   G_TOKEN_STRING,
1996
1997   G_TOKEN_SYMBOL,
1998   G_TOKEN_IDENTIFIER,
1999   G_TOKEN_IDENTIFIER_NULL,
2000
2001   G_TOKEN_COMMENT_SINGLE,
2002   G_TOKEN_COMMENT_MULTI,
2003   G_TOKEN_LAST
2004 } GTokenType;
2005
2006 union   _GTokenValue
2007 {
2008   gpointer      v_symbol;
2009   gchar         *v_identifier;
2010   gulong        v_binary;
2011   gulong        v_octal;
2012   gulong        v_int;
2013   gdouble       v_float;
2014   gulong        v_hex;
2015   gchar         *v_string;
2016   gchar         *v_comment;
2017   guchar        v_char;
2018   guint         v_error;
2019 };
2020
2021 struct  _GScannerConfig
2022 {
2023   /* Character sets
2024    */
2025   gchar         *cset_skip_characters;          /* default: " \t\n" */
2026   gchar         *cset_identifier_first;
2027   gchar         *cset_identifier_nth;
2028   gchar         *cpair_comment_single;          /* default: "#\n" */
2029
2030   /* Should symbol lookup work case sensitive?
2031    */
2032   guint         case_sensitive : 1;
2033
2034   /* Boolean values to be adjusted "on the fly"
2035    * to configure scanning behaviour.
2036    */
2037   guint         skip_comment_multi : 1;         /* C like comment */
2038   guint         skip_comment_single : 1;        /* single line comment */
2039   guint         scan_comment_multi : 1;         /* scan multi line comments? */
2040   guint         scan_identifier : 1;
2041   guint         scan_identifier_1char : 1;
2042   guint         scan_identifier_NULL : 1;
2043   guint         scan_symbols : 1;
2044   guint         scan_binary : 1;
2045   guint         scan_octal : 1;
2046   guint         scan_float : 1;
2047   guint         scan_hex : 1;                   /* `0x0ff0' */
2048   guint         scan_hex_dollar : 1;            /* `$0ff0' */
2049   guint         scan_string_sq : 1;             /* string: 'anything' */
2050   guint         scan_string_dq : 1;             /* string: "\\-escapes!\n" */
2051   guint         numbers_2_int : 1;              /* bin, octal, hex => int */
2052   guint         int_2_float : 1;                /* int => G_TOKEN_FLOAT? */
2053   guint         identifier_2_string : 1;
2054   guint         char_2_token : 1;               /* return G_TOKEN_CHAR? */
2055   guint         symbol_2_token : 1;
2056   guint         scope_0_fallback : 1;           /* try scope 0 on lookups? */
2057 };
2058
2059 struct  _GScanner
2060 {
2061   /* unused fields */
2062   gpointer              user_data;
2063   guint                 max_parse_errors;
2064
2065   /* g_scanner_error() increments this field */
2066   guint                 parse_errors;
2067
2068   /* name of input stream, featured by the default message handler */
2069   const gchar           *input_name;
2070
2071   /* data pointer for derived structures */
2072   gpointer              derived_data;
2073
2074   /* link into the scanner configuration */
2075   GScannerConfig        *config;
2076
2077   /* fields filled in after g_scanner_get_next_token() */
2078   GTokenType            token;
2079   GTokenValue           value;
2080   guint                 line;
2081   guint                 position;
2082
2083   /* fields filled in after g_scanner_peek_next_token() */
2084   GTokenType            next_token;
2085   GTokenValue           next_value;
2086   guint                 next_line;
2087   guint                 next_position;
2088
2089   /* to be considered private */
2090   GHashTable            *symbol_table;
2091   gint                  input_fd;
2092   const gchar           *text;
2093   const gchar           *text_end;
2094   gchar                 *buffer;
2095   guint                 scope_id;
2096
2097   /* handler function for _warn and _error */
2098   GScannerMsgFunc       msg_handler;
2099 };
2100
2101 GScanner*       g_scanner_new                   (GScannerConfig *config_templ);
2102 void            g_scanner_destroy               (GScanner       *scanner);
2103 void            g_scanner_input_file            (GScanner       *scanner,
2104                                                  gint           input_fd);
2105 void            g_scanner_sync_file_offset      (GScanner       *scanner);
2106 void            g_scanner_input_text            (GScanner       *scanner,
2107                                                  const  gchar   *text,
2108                                                  guint          text_len);
2109 GTokenType      g_scanner_get_next_token        (GScanner       *scanner);
2110 GTokenType      g_scanner_peek_next_token       (GScanner       *scanner);
2111 GTokenType      g_scanner_cur_token             (GScanner       *scanner);
2112 GTokenValue     g_scanner_cur_value             (GScanner       *scanner);
2113 guint           g_scanner_cur_line              (GScanner       *scanner);
2114 guint           g_scanner_cur_position          (GScanner       *scanner);
2115 gboolean        g_scanner_eof                   (GScanner       *scanner);
2116 guint           g_scanner_set_scope             (GScanner       *scanner,
2117                                                  guint           scope_id);
2118 void            g_scanner_scope_add_symbol      (GScanner       *scanner,
2119                                                  guint           scope_id,
2120                                                  const gchar    *symbol,
2121                                                  gpointer       value);
2122 void            g_scanner_scope_remove_symbol   (GScanner       *scanner,
2123                                                  guint           scope_id,
2124                                                  const gchar    *symbol);
2125 gpointer        g_scanner_scope_lookup_symbol   (GScanner       *scanner,
2126                                                  guint           scope_id,
2127                                                  const gchar    *symbol);
2128 void            g_scanner_scope_foreach_symbol  (GScanner       *scanner,
2129                                                  guint           scope_id,
2130                                                  GHFunc          func,
2131                                                  gpointer        user_data);
2132 gpointer        g_scanner_lookup_symbol         (GScanner       *scanner,
2133                                                  const gchar    *symbol);
2134 void            g_scanner_freeze_symbol_table   (GScanner       *scanner);
2135 void            g_scanner_thaw_symbol_table     (GScanner       *scanner);
2136 void            g_scanner_unexp_token           (GScanner       *scanner,
2137                                                  GTokenType     expected_token,
2138                                                  const gchar    *identifier_spec,
2139                                                  const gchar    *symbol_spec,
2140                                                  const gchar    *symbol_name,
2141                                                  const gchar    *message,
2142                                                  gint            is_error);
2143 void            g_scanner_error                 (GScanner       *scanner,
2144                                                  const gchar    *format,
2145                                                  ...) G_GNUC_PRINTF (2,3);
2146 void            g_scanner_warn                  (GScanner       *scanner,
2147                                                  const gchar    *format,
2148                                                  ...) G_GNUC_PRINTF (2,3);
2149 gint            g_scanner_stat_mode             (const gchar    *filename);
2150 /* keep downward source compatibility */
2151 #define         g_scanner_add_symbol( scanner, symbol, value )  G_STMT_START { \
2152   g_scanner_scope_add_symbol ((scanner), 0, (symbol), (value)); \
2153 } G_STMT_END
2154 #define         g_scanner_remove_symbol( scanner, symbol )      G_STMT_START { \
2155   g_scanner_scope_remove_symbol ((scanner), 0, (symbol)); \
2156 } G_STMT_END
2157 #define         g_scanner_foreach_symbol( scanner, func, data ) G_STMT_START { \
2158   g_scanner_scope_foreach_symbol ((scanner), 0, (func), (data)); \
2159 } G_STMT_END
2160
2161
2162 /* GCompletion
2163  */
2164
2165 struct _GCompletion
2166 {
2167   GList* items;
2168   GCompletionFunc func;
2169
2170   gchar* prefix;
2171   GList* cache;
2172 };
2173
2174 GCompletion* g_completion_new          (GCompletionFunc func);
2175 void         g_completion_add_items    (GCompletion*    cmp,
2176                                         GList*          items);
2177 void         g_completion_remove_items (GCompletion*    cmp,
2178                                         GList*          items);
2179 void         g_completion_clear_items  (GCompletion*    cmp);
2180 GList*       g_completion_complete     (GCompletion*    cmp,
2181                                         gchar*          prefix,
2182                                         gchar**         new_prefix);
2183 void         g_completion_free         (GCompletion*    cmp);
2184
2185
2186 /* GDate
2187  *
2188  * Date calculations (not time for now, to be resolved). These are a
2189  * mutant combination of Steffen Beyer's DateCalc routines
2190  * (http://www.perl.com/CPAN/authors/id/STBEY/) and Jon Trowbridge's
2191  * date routines (written for in-house software).  Written by Havoc
2192  * Pennington <hp@pobox.com>
2193  */
2194
2195 typedef guint16 GDateYear;
2196 typedef guint8  GDateDay;   /* day of the month */
2197 typedef struct _GDate GDate;
2198 /* make struct tm known without having to include time.h */
2199 struct tm;
2200
2201 /* enum used to specify order of appearance in parsed date strings */
2202 typedef enum
2203 {
2204   G_DATE_DAY   = 0,
2205   G_DATE_MONTH = 1,
2206   G_DATE_YEAR  = 2
2207 } GDateDMY;
2208
2209 /* actual week and month values */
2210 typedef enum
2211 {
2212   G_DATE_BAD_WEEKDAY  = 0,
2213   G_DATE_MONDAY       = 1,
2214   G_DATE_TUESDAY      = 2,
2215   G_DATE_WEDNESDAY    = 3,
2216   G_DATE_THURSDAY     = 4,
2217   G_DATE_FRIDAY       = 5,
2218   G_DATE_SATURDAY     = 6,
2219   G_DATE_SUNDAY       = 7
2220 } GDateWeekday;
2221 typedef enum
2222 {
2223   G_DATE_BAD_MONTH = 0,
2224   G_DATE_JANUARY   = 1,
2225   G_DATE_FEBRUARY  = 2,
2226   G_DATE_MARCH     = 3,
2227   G_DATE_APRIL     = 4,
2228   G_DATE_MAY       = 5,
2229   G_DATE_JUNE      = 6,
2230   G_DATE_JULY      = 7,
2231   G_DATE_AUGUST    = 8,
2232   G_DATE_SEPTEMBER = 9,
2233   G_DATE_OCTOBER   = 10,
2234   G_DATE_NOVEMBER  = 11,
2235   G_DATE_DECEMBER  = 12
2236 } GDateMonth;
2237
2238 #define G_DATE_BAD_JULIAN 0U
2239 #define G_DATE_BAD_DAY    0U
2240 #define G_DATE_BAD_YEAR   0U
2241
2242 /* Note: directly manipulating structs is generally a bad idea, but
2243  * in this case it's an *incredibly* bad idea, because all or part
2244  * of this struct can be invalid at any given time. Use the functions,
2245  * or you will get hosed, I promise.
2246  */
2247 struct _GDate
2248 {
2249   guint julian_days : 32; /* julian days representation - we use a
2250                            *  bitfield hoping that 64 bit platforms
2251                            *  will pack this whole struct in one big
2252                            *  int
2253                            */
2254
2255   guint julian : 1;    /* julian is valid */
2256   guint dmy    : 1;    /* dmy is valid */
2257
2258   /* DMY representation */
2259   guint day    : 6;
2260   guint month  : 4;
2261   guint year   : 16;
2262 };
2263
2264 /* g_date_new() returns an invalid date, you then have to _set() stuff
2265  * to get a usable object. You can also allocate a GDate statically,
2266  * then call g_date_clear() to initialize.
2267  */
2268 GDate*       g_date_new                   (void);
2269 GDate*       g_date_new_dmy               (GDateDay     day,
2270                                            GDateMonth   month,
2271                                            GDateYear    year);
2272 GDate*       g_date_new_julian            (guint32      julian_day);
2273 void         g_date_free                  (GDate       *date);
2274
2275 /* check g_date_valid() after doing an operation that might fail, like
2276  * _parse.  Almost all g_date operations are undefined on invalid
2277  * dates (the exceptions are the mutators, since you need those to
2278  * return to validity).
2279  */
2280 gboolean     g_date_valid                 (GDate       *date);
2281 gboolean     g_date_valid_day             (GDateDay     day);
2282 gboolean     g_date_valid_month           (GDateMonth   month);
2283 gboolean     g_date_valid_year            (GDateYear    year);
2284 gboolean     g_date_valid_weekday         (GDateWeekday weekday);
2285 gboolean     g_date_valid_julian          (guint32      julian_date);
2286 gboolean     g_date_valid_dmy             (GDateDay     day,
2287                                            GDateMonth   month,
2288                                            GDateYear    year);
2289
2290 GDateWeekday g_date_weekday               (GDate       *date);
2291 GDateMonth   g_date_month                 (GDate       *date);
2292 GDateYear    g_date_year                  (GDate       *date);
2293 GDateDay     g_date_day                   (GDate       *date);
2294 guint32      g_date_julian                (GDate       *date);
2295 guint        g_date_day_of_year           (GDate       *date);
2296
2297 /* First monday/sunday is the start of week 1; if we haven't reached
2298  * that day, return 0. These are not ISO weeks of the year; that
2299  * routine needs to be added.
2300  * these functions return the number of weeks, starting on the
2301  * corrsponding day
2302  */
2303 guint        g_date_monday_week_of_year   (GDate      *date);
2304 guint        g_date_sunday_week_of_year   (GDate      *date);
2305
2306 /* If you create a static date struct you need to clear it to get it
2307  * in a sane state before use. You can clear a whole array at
2308  * once with the ndates argument.
2309  */
2310 void         g_date_clear                 (GDate       *date,
2311                                            guint        n_dates);
2312
2313 /* The parse routine is meant for dates typed in by a user, so it
2314  * permits many formats but tries to catch common typos. If your data
2315  * needs to be strictly validated, it is not an appropriate function.
2316  */
2317 void         g_date_set_parse             (GDate       *date,
2318                                            const gchar *str);
2319 void         g_date_set_time              (GDate       *date,
2320                                            GTime        time);
2321 void         g_date_set_month             (GDate       *date,
2322                                            GDateMonth   month);
2323 void         g_date_set_day               (GDate       *date,
2324                                            GDateDay     day);
2325 void         g_date_set_year              (GDate       *date,
2326                                            GDateYear    year);
2327 void         g_date_set_dmy               (GDate       *date,
2328                                            GDateDay     day,
2329                                            GDateMonth   month,
2330                                            GDateYear    y);
2331 void         g_date_set_julian            (GDate       *date,
2332                                            guint32      julian_date);
2333 gboolean     g_date_is_first_of_month     (GDate       *date);
2334 gboolean     g_date_is_last_of_month      (GDate       *date);
2335
2336 /* To go forward by some number of weeks just go forward weeks*7 days */
2337 void         g_date_add_days              (GDate       *date,
2338                                            guint        n_days);
2339 void         g_date_subtract_days         (GDate       *date,
2340                                            guint        n_days);
2341
2342 /* If you add/sub months while day > 28, the day might change */
2343 void         g_date_add_months            (GDate       *date,
2344                                            guint        n_months);
2345 void         g_date_subtract_months       (GDate       *date,
2346                                            guint        n_months);
2347
2348 /* If it's feb 29, changing years can move you to the 28th */
2349 void         g_date_add_years             (GDate       *date,
2350                                            guint        n_years);
2351 void         g_date_subtract_years        (GDate       *date,
2352                                            guint        n_years);
2353 gboolean     g_date_is_leap_year          (GDateYear    year);
2354 guint8       g_date_days_in_month         (GDateMonth   month,
2355                                            GDateYear    year);
2356 guint8       g_date_monday_weeks_in_year  (GDateYear    year);
2357 guint8       g_date_sunday_weeks_in_year  (GDateYear    year);
2358
2359 /* qsort-friendly (with a cast...) */
2360 gint         g_date_compare               (GDate       *lhs,
2361                                            GDate       *rhs);
2362 void         g_date_to_struct_tm          (GDate       *date,
2363                                            struct tm   *tm);
2364
2365 /* Just like strftime() except you can only use date-related formats.
2366  *   Using a time format is undefined.
2367  */
2368 gsize        g_date_strftime              (gchar       *s,
2369                                            gsize        slen,
2370                                            const gchar *format,
2371                                            GDate       *date);
2372
2373 /* GRelation
2374  *
2375  * Indexed Relations.  Imagine a really simple table in a
2376  * database.  Relations are not ordered.  This data type is meant for
2377  * maintaining a N-way mapping.
2378  *
2379  * g_relation_new() creates a relation with FIELDS fields
2380  *
2381  * g_relation_destroy() frees all resources
2382  * g_tuples_destroy() frees the result of g_relation_select()
2383  *
2384  * g_relation_index() indexes relation FIELD with the provided
2385  *   equality and hash functions.  this must be done before any
2386  *   calls to insert are made.
2387  *
2388  * g_relation_insert() inserts a new tuple.  you are expected to
2389  *   provide the right number of fields.
2390  *
2391  * g_relation_delete() deletes all relations with KEY in FIELD
2392  * g_relation_select() returns ...
2393  * g_relation_count() counts ...
2394  */
2395
2396 GRelation* g_relation_new     (gint         fields);
2397 void       g_relation_destroy (GRelation   *relation);
2398 void       g_relation_index   (GRelation   *relation,
2399                                gint         field,
2400                                GHashFunc    hash_func,
2401                                GCompareFunc key_compare_func);
2402 void       g_relation_insert  (GRelation   *relation,
2403                                ...);
2404 gint       g_relation_delete  (GRelation   *relation,
2405                                gconstpointer  key,
2406                                gint         field);
2407 GTuples*   g_relation_select  (GRelation   *relation,
2408                                gconstpointer  key,
2409                                gint         field);
2410 gint       g_relation_count   (GRelation   *relation,
2411                                gconstpointer  key,
2412                                gint         field);
2413 gboolean   g_relation_exists  (GRelation   *relation,
2414                                ...);
2415 void       g_relation_print   (GRelation   *relation);
2416
2417 void       g_tuples_destroy   (GTuples     *tuples);
2418 gpointer   g_tuples_index     (GTuples     *tuples,
2419                                gint         index,
2420                                gint         field);
2421
2422
2423 /* GRand - a good and fast random number generator: Mersenne Twister
2424  * see http://www.math.keio.ac.jp/~matumoto/emt.html for more info.
2425  * The range functions return a value in the intervall [min,max).
2426  * int          -> [0..2^32-1]
2427  * int_range    -> [min..max-1]
2428  * double       -> [0..1)
2429  * double_range -> [min..max)
2430  */
2431
2432 GRand*  g_rand_new_with_seed   (guint32     seed);
2433 GRand*  g_rand_new             (void);
2434 void    g_rand_free            (GRand      *rand);
2435
2436 void    g_rand_set_seed        (GRand      *rand,
2437                                 guint32     seed);
2438 guint32 g_rand_int             (GRand      *rand);
2439 gint32  g_rand_int_range       (GRand      *rand,
2440                                 gint32      min,
2441                                 gint32      max);
2442 gdouble g_rand_double          (GRand      *rand);
2443 gdouble g_rand_double_range    (GRand      *rand,
2444                                 gdouble     min,
2445                                 gdouble     max);
2446
2447 void    g_random_set_seed      (guint32     seed);
2448 guint32 g_random_int           (void);
2449 gint32  g_random_int_range     (gint32      min,
2450                                 gint32      max);
2451 gdouble g_random_double        (void);
2452 gdouble g_random_double_range  (gdouble     min,
2453                                 gdouble     max);
2454
2455
2456 /* Prime numbers.
2457  */
2458
2459 /* This function returns prime numbers spaced by approximately 1.5-2.0
2460  * and is for use in resizing data structures which prefer
2461  * prime-valued sizes.  The closest spaced prime function returns the
2462  * next largest prime, or the highest it knows about which is about
2463  * MAXINT/4.
2464  */
2465 guint      g_spaced_primes_closest (guint num);
2466
2467
2468 /* GIOChannel
2469  */
2470
2471 typedef struct _GIOFuncs GIOFuncs;
2472 typedef enum
2473 {
2474   G_IO_ERROR_NONE,
2475   G_IO_ERROR_AGAIN,
2476   G_IO_ERROR_INVAL,
2477   G_IO_ERROR_UNKNOWN
2478 } GIOError;
2479 typedef enum
2480 {
2481   G_SEEK_CUR,
2482   G_SEEK_SET,
2483   G_SEEK_END
2484 } GSeekType;
2485 typedef enum
2486 {
2487   G_IO_IN       GLIB_SYSDEF_POLLIN,
2488   G_IO_OUT      GLIB_SYSDEF_POLLOUT,
2489   G_IO_PRI      GLIB_SYSDEF_POLLPRI,
2490   G_IO_ERR      GLIB_SYSDEF_POLLERR,
2491   G_IO_HUP      GLIB_SYSDEF_POLLHUP,
2492   G_IO_NVAL     GLIB_SYSDEF_POLLNVAL
2493 } GIOCondition;
2494
2495 struct _GIOChannel
2496 {
2497   guint channel_flags;
2498   guint ref_count;
2499   GIOFuncs *funcs;
2500 };
2501
2502 typedef gboolean (*GIOFunc) (GIOChannel   *source,
2503                              GIOCondition  condition,
2504                              gpointer      data);
2505 struct _GIOFuncs
2506 {
2507   GIOError (*io_read)   (GIOChannel     *channel,
2508                          gchar          *buf,
2509                          guint           count,
2510                          guint          *bytes_read);
2511   GIOError (*io_write)  (GIOChannel     *channel,
2512                          gchar          *buf,
2513                          guint           count,
2514                          guint          *bytes_written);
2515   GIOError (*io_seek)   (GIOChannel     *channel,
2516                          gint            offset,
2517                          GSeekType       type);
2518   void (*io_close)      (GIOChannel     *channel);
2519   guint (*io_add_watch) (GIOChannel     *channel,
2520                          gint            priority,
2521                          GIOCondition    condition,
2522                          GIOFunc         func,
2523                          gpointer        user_data,
2524                          GDestroyNotify  notify);
2525   void (*io_free)       (GIOChannel     *channel);
2526 };
2527
2528 void        g_io_channel_init   (GIOChannel    *channel);
2529 void        g_io_channel_ref    (GIOChannel    *channel);
2530 void        g_io_channel_unref  (GIOChannel    *channel);
2531 GIOError    g_io_channel_read   (GIOChannel    *channel,
2532                                  gchar         *buf,
2533                                  guint          count,
2534                                  guint         *bytes_read);
2535 GIOError  g_io_channel_write    (GIOChannel    *channel,
2536                                  gchar         *buf,
2537                                  guint          count,
2538                                  guint         *bytes_written);
2539 GIOError  g_io_channel_seek     (GIOChannel    *channel,
2540                                  gint           offset,
2541                                  GSeekType      type);
2542 void      g_io_channel_close    (GIOChannel    *channel);
2543 guint     g_io_add_watch_full   (GIOChannel    *channel,
2544                                  gint           priority,
2545                                  GIOCondition   condition,
2546                                  GIOFunc        func,
2547                                  gpointer       user_data,
2548                                  GDestroyNotify notify);
2549 guint    g_io_add_watch         (GIOChannel    *channel,
2550                                  GIOCondition   condition,
2551                                  GIOFunc        func,
2552                                  gpointer       user_data);
2553
2554
2555 /* Main loop
2556  */
2557 typedef struct _GTimeVal        GTimeVal;
2558 typedef struct _GSourceFuncs    GSourceFuncs;
2559 typedef struct _GMainLoop       GMainLoop;      /* Opaque */
2560
2561 struct _GTimeVal
2562 {
2563   glong tv_sec;
2564   glong tv_usec;
2565 };
2566 struct _GSourceFuncs
2567 {
2568   gboolean (*prepare)  (gpointer  source_data,
2569                         GTimeVal *current_time,
2570                         gint     *timeout);
2571   gboolean (*check)    (gpointer  source_data,
2572                         GTimeVal *current_time);
2573   gboolean (*dispatch) (gpointer  source_data,
2574                         GTimeVal *current_time,
2575                         gpointer  user_data);
2576   GDestroyNotify destroy;
2577 };
2578
2579 /* Standard priorities */
2580
2581 #define G_PRIORITY_HIGH            -100
2582 #define G_PRIORITY_DEFAULT          0
2583 #define G_PRIORITY_HIGH_IDLE        100
2584 #define G_PRIORITY_DEFAULT_IDLE     200
2585 #define G_PRIORITY_LOW              300
2586
2587 typedef gboolean (*GSourceFunc) (gpointer data);
2588
2589 /* Hooks for adding to the main loop */
2590 guint    g_source_add                        (gint           priority,
2591                                               gboolean       can_recurse,
2592                                               GSourceFuncs  *funcs,
2593                                               gpointer       source_data,
2594                                               gpointer       user_data,
2595                                               GDestroyNotify notify);
2596 gboolean g_source_remove                     (guint          tag);
2597 gboolean g_source_remove_by_user_data        (gpointer       user_data);
2598 gboolean g_source_remove_by_source_data      (gpointer       source_data);
2599 gboolean g_source_remove_by_funcs_user_data  (GSourceFuncs  *funcs,
2600                                               gpointer       user_data);
2601
2602 void g_get_current_time             (GTimeVal      *result);
2603
2604 /* Running the main loop */
2605 GMainLoop*      g_main_new              (gboolean        is_running);
2606 void            g_main_run              (GMainLoop      *loop);
2607 void            g_main_quit             (GMainLoop      *loop);
2608 void            g_main_destroy          (GMainLoop      *loop);
2609 gboolean        g_main_is_running       (GMainLoop      *loop);
2610
2611 /* Run a single iteration of the mainloop. If block is FALSE,
2612  * will never block
2613  */
2614 gboolean        g_main_iteration        (gboolean       may_block);
2615
2616 /* See if any events are pending */
2617 gboolean        g_main_pending          (void);
2618
2619 /* Idles and timeouts */
2620 guint           g_timeout_add_full      (gint           priority,
2621                                          guint          interval,
2622                                          GSourceFunc    function,
2623                                          gpointer       data,
2624                                          GDestroyNotify notify);
2625 guint           g_timeout_add           (guint          interval,
2626                                          GSourceFunc    function,
2627                                          gpointer       data);
2628 guint           g_idle_add              (GSourceFunc    function,
2629                                          gpointer       data);
2630 guint           g_idle_add_full         (gint           priority,
2631                                          GSourceFunc    function,
2632                                          gpointer       data,
2633                                          GDestroyNotify destroy);
2634 gboolean        g_idle_remove_by_data   (gpointer       data);
2635
2636 /* GPollFD
2637  *
2638  * System-specific IO and main loop calls
2639  *
2640  * On Win32, the fd in a GPollFD should be Win32 HANDLE (*not* a file
2641  * descriptor as provided by the C runtime) that can be used by
2642  * MsgWaitForMultipleObjects. This does *not* include file handles
2643  * from CreateFile, SOCKETs, nor pipe handles. (But you can use
2644  * WSAEventSelect to signal events when a SOCKET is readable).
2645  *
2646  * On Win32, fd can also be the special value G_WIN32_MSG_HANDLE to
2647  * indicate polling for messages. These message queue GPollFDs should
2648  * be added with the g_main_poll_win32_msg_add function.
2649  *
2650  * But note that G_WIN32_MSG_HANDLE GPollFDs should not be used by GDK
2651  * (GTK) programs, as GDK itself wants to read messages and convert them
2652  * to GDK events.
2653  *
2654  * So, unless you really know what you are doing, it's best not to try
2655  * to use the main loop polling stuff for your own needs on
2656  * Win32. It's really only written for the GIMP's needs so
2657  * far.
2658  */
2659
2660 typedef struct _GPollFD GPollFD;
2661 typedef gint    (*GPollFunc)    (GPollFD *ufds,
2662                                  guint    nfsd,
2663                                  gint     timeout);
2664 struct _GPollFD
2665 {
2666   gint          fd;
2667   gushort       events;
2668   gushort       revents;
2669 };
2670
2671 void        g_main_add_poll          (GPollFD    *fd,
2672                                       gint        priority);
2673 void        g_main_remove_poll       (GPollFD    *fd);
2674 void        g_main_set_poll_func     (GPollFunc   func);
2675
2676 /* On Unix, IO channels created with this function for any file
2677  * descriptor or socket.
2678  *
2679  * On Win32, use this only for plain files opened with the MSVCRT (the
2680  * Microsoft run-time C library) _open(), including file descriptors
2681  * 0, 1 and 2 (corresponding to stdin, stdout and stderr).
2682  * Actually, don't do even that, this code isn't done yet.
2683  *
2684  * The term file descriptor as used in the context of Win32 refers to
2685  * the emulated Unix-like file descriptors MSVCRT provides.
2686  */
2687 GIOChannel* g_io_channel_unix_new    (int         fd);
2688 gint        g_io_channel_unix_get_fd (GIOChannel *channel);
2689
2690 #ifdef NATIVE_WIN32
2691
2692 GUTILS_C_VAR guint g_pipe_readable_msg;
2693
2694 #define G_WIN32_MSG_HANDLE 19981206
2695
2696 /* This is used to add polling for Windows messages. GDK (GTk+) programs
2697  * should *not* use this. (In fact, I can't think of any program that
2698  * would want to use this, but it's here just for completeness's sake.
2699  */
2700 void        g_main_poll_win32_msg_add(gint        priority,
2701                                       GPollFD    *fd,
2702                                       guint       hwnd);
2703
2704 /* An IO channel for Windows messages for window handle hwnd. */
2705 GIOChannel *g_io_channel_win32_new_messages (guint hwnd);
2706
2707 /* An IO channel for an anonymous pipe as returned from the MSVCRT
2708  * _pipe(), with no mechanism for the writer to tell the reader when
2709  * there is data in the pipe.
2710  *
2711  * This is not really implemented yet.
2712  */
2713 GIOChannel *g_io_channel_win32_new_pipe (int fd);
2714
2715 /* An IO channel for a pipe as returned from the MSVCRT _pipe(), with
2716  * Windows user messages used to signal data in the pipe for the
2717  * reader.
2718  *
2719  * fd is the file descriptor. For the write end, peer is the thread id
2720  * of the reader, and peer_fd is his file descriptor for the read end
2721  * of the pipe.
2722  *
2723  * This is used by the GIMP, and works.
2724  */
2725 GIOChannel *g_io_channel_win32_new_pipe_with_wakeups (int   fd,
2726                                                       guint peer,
2727                                                       int   peer_fd);
2728
2729 void        g_io_channel_win32_pipe_request_wakeups (GIOChannel *channel,
2730                                                      guint       peer,
2731                                                      int         peer_fd);
2732
2733 void        g_io_channel_win32_pipe_readable (int   fd,
2734                                               guint offset);
2735
2736 /* Get the C runtime file descriptor of a channel. */
2737 gint        g_io_channel_win32_get_fd (GIOChannel *channel);
2738
2739 /* An IO channel for a SOCK_STREAM winsock socket. The parameter is
2740  * actually a SOCKET.
2741  */
2742 GIOChannel *g_io_channel_win32_new_stream_socket (int socket);
2743
2744 #endif
2745
2746 /* Windows emulation stubs for common Unix functions
2747  */
2748 #ifdef NATIVE_WIN32
2749 #  define MAXPATHLEN 1024
2750
2751 #ifdef _MSC_VER
2752 typedef int pid_t;
2753 #endif
2754
2755 /* These POSIXish functions are available in the Microsoft C library
2756  * prefixed with underscore (which of course technically speaking is
2757  * the Right Thing, as they are non-ANSI. Not that being non-ANSI
2758  * prevents Microsoft from practically requiring you to include
2759  * <windows.h> every now and then...).
2760  *
2761  * You still need to include the appropriate headers to get the
2762  * prototypes, like <stdio.h>, <io.h>, <direct.h> or <process.h>.
2763  *
2764  * For some functions, we provide emulators in glib, which are prefixed
2765  * with gwin_.
2766  */
2767 #    define getcwd              _getcwd
2768 #    define getpid              _getpid
2769 #    define access              _access
2770 #ifdef __GNUC__
2771 #    define stat                _stat
2772 #    define fileno              _fileno
2773 #endif
2774 #    define fstat               _fstat
2775 #    define unlink              _unlink
2776 #    define open                _open
2777 #    define read                _read
2778 #    define write               _write
2779 #    define lseek               _lseek
2780 #    define close               _close
2781 #    define rmdir               _rmdir
2782 #    define pipe(phandles)      _pipe (phandles, 4096, _O_BINARY)
2783 #    define popen               _popen
2784 #    define pclose              _pclose
2785 #    define fdopen              _fdopen
2786 #    define hypot               _hypot
2787 #    define ftruncate(fd, size) gwin_ftruncate (fd, size)
2788 #    define opendir             gwin_opendir
2789 #    define readdir             gwin_readdir
2790 #    define rewinddir           gwin_rewinddir
2791 #    define closedir            gwin_closedir
2792 #    define NAME_MAX 255
2793 struct DIR
2794 {
2795   gchar    *dir_name;
2796   gboolean  just_opened;
2797   guint     find_file_handle;
2798   gpointer  find_file_data;
2799 };
2800 typedef struct DIR DIR;
2801 struct dirent
2802 {
2803   gchar  d_name[NAME_MAX + 1];
2804 };
2805 /* emulation functions */
2806 extern int      gwin_ftruncate  (gint            f,
2807                                  guint           size);
2808 DIR*            gwin_opendir    (const gchar    *dirname);
2809 struct dirent*  gwin_readdir    (DIR            *dir);
2810 void            gwin_rewinddir  (DIR            *dir);
2811 gint            gwin_closedir   (DIR            *dir);
2812 #endif   /* NATIVE_WIN32 */
2813
2814
2815 /* GLib Thread support
2816  */
2817
2818 typedef void            (*GThreadFunc)          (gpointer       value);
2819
2820 typedef enum
2821 {
2822     G_THREAD_PRIORITY_LOW,
2823     G_THREAD_PRIORITY_NORMAL,
2824     G_THREAD_PRIORITY_HIGH,
2825     G_THREAD_PRIORITY_URGENT,
2826 } GThreadPriority;
2827
2828 typedef struct _GThread         GThread;
2829 struct  _GThread
2830 {
2831   GThreadPriority priority;
2832   gboolean bound;
2833   gboolean joinable;
2834 };
2835
2836 typedef struct _GMutex          GMutex;
2837 typedef struct _GCond           GCond;
2838 typedef struct _GPrivate        GPrivate;
2839 typedef struct _GStaticPrivate  GStaticPrivate;
2840
2841 typedef struct _GThreadFunctions GThreadFunctions;
2842 struct _GThreadFunctions
2843 {
2844   GMutex*  (*mutex_new)           (void);
2845   void     (*mutex_lock)          (GMutex               *mutex);
2846   gboolean (*mutex_trylock)       (GMutex               *mutex);
2847   void     (*mutex_unlock)        (GMutex               *mutex);
2848   void     (*mutex_free)          (GMutex               *mutex);
2849   GCond*   (*cond_new)            (void);
2850   void     (*cond_signal)         (GCond                *cond);
2851   void     (*cond_broadcast)      (GCond                *cond);
2852   void     (*cond_wait)           (GCond                *cond,
2853                                    GMutex               *mutex);
2854   gboolean (*cond_timed_wait)     (GCond                *cond,
2855                                    GMutex               *mutex,
2856                                    GTimeVal             *end_time);
2857   void      (*cond_free)          (GCond                *cond);
2858   GPrivate* (*private_new)        (GDestroyNotify        destructor);
2859   gpointer  (*private_get)        (GPrivate             *private_key);
2860   void      (*private_set)        (GPrivate             *private_key,
2861                                    gpointer              data);
2862   gpointer  (*thread_create)      (GThreadFunc           thread_func,
2863                                    gpointer              arg,
2864                                    gulong                stack_size,
2865                                    gboolean              joinable,
2866                                    gboolean              bound,
2867                                    GThreadPriority       priority);
2868   void      (*thread_yield)       (void);
2869   void      (*thread_join)        (gpointer              thread);
2870   void      (*thread_exit)        (void);
2871   void      (*thread_set_priority)(gpointer              thread,
2872                                    GThreadPriority       priority);
2873   gpointer  (*thread_self)        (void);
2874 };
2875
2876 GUTILS_C_VAR GThreadFunctions   g_thread_functions_for_glib_use;
2877 GUTILS_C_VAR gboolean           g_thread_use_default_impl;
2878 GUTILS_C_VAR gboolean           g_threads_got_initialized;
2879
2880 /* initializes the mutex/cond/private implementation for glib, might
2881  * only be called once, and must not be called directly or indirectly
2882  * from another glib-function, e.g. as a callback.
2883  */
2884 void    g_thread_init   (GThreadFunctions       *vtable);
2885
2886 /* internal function for fallback static mutex implementation */
2887 GMutex* g_static_mutex_get_mutex_impl   (GMutex **mutex);
2888
2889 /* shorthands for conditional and unconditional function calls */
2890 #define G_THREAD_UF(name, arglist) \
2891     (*g_thread_functions_for_glib_use . name) arglist
2892 #define G_THREAD_CF(name, fail, arg) \
2893     (g_thread_supported () ? G_THREAD_UF (name, arg) : (fail))
2894 /* keep in mind, all those mutexes and static mutexes are not
2895  * recursive in general, don't rely on that
2896  */
2897 #define g_thread_supported()    (g_threads_got_initialized)
2898 #define g_mutex_new()            G_THREAD_UF (mutex_new,      ())
2899 #define g_mutex_lock(mutex)      G_THREAD_CF (mutex_lock,     (void)0, (mutex))
2900 #define g_mutex_trylock(mutex)   G_THREAD_CF (mutex_trylock,  TRUE,    (mutex))
2901 #define g_mutex_unlock(mutex)    G_THREAD_CF (mutex_unlock,   (void)0, (mutex))
2902 #define g_mutex_free(mutex)      G_THREAD_CF (mutex_free,     (void)0, (mutex))
2903 #define g_cond_new()             G_THREAD_UF (cond_new,       ())
2904 #define g_cond_signal(cond)      G_THREAD_CF (cond_signal,    (void)0, (cond))
2905 #define g_cond_broadcast(cond)   G_THREAD_CF (cond_broadcast, (void)0, (cond))
2906 #define g_cond_wait(cond, mutex) G_THREAD_CF (cond_wait,      (void)0, (cond, \
2907                                                                         mutex))
2908 #define g_cond_free(cond)        G_THREAD_CF (cond_free,      (void)0, (cond))
2909 #define g_cond_timed_wait(cond, mutex, abs_time) G_THREAD_CF (cond_timed_wait, \
2910                                                               TRUE, \
2911                                                               (cond, mutex, \
2912                                                                abs_time))
2913 #define g_private_new(destructor)         G_THREAD_UF (private_new, (destructor))
2914 #define g_private_get(private_key)        G_THREAD_CF (private_get, \
2915                                                        ((gpointer)private_key), \
2916                                                        (private_key))
2917 #define g_private_set(private_key, value) G_THREAD_CF (private_set, \
2918                                                        (void) (private_key = \
2919                                                         (GPrivate*) (value)), \
2920                                                        (private_key, value))
2921 #define g_thread_yield()              G_THREAD_CF (thread_yield, (void)0, ())
2922 #define g_thread_exit()               G_THREAD_CF (thread_exit, (void)0, ())
2923
2924 GThread* g_thread_create (GThreadFunc            thread_func,
2925                           gpointer               arg,
2926                           gulong                 stack_size,
2927                           gboolean               joinable,
2928                           gboolean               bound,
2929                           GThreadPriority        priority);
2930 GThread* g_thread_self ();
2931 void g_thread_join (GThread* thread);
2932 void g_thread_set_priority (GThread* thread,
2933                             GThreadPriority priority);
2934
2935 /* GStaticMutexes can be statically initialized with the value
2936  * G_STATIC_MUTEX_INIT, and then they can directly be used, that is
2937  * much easier, than having to explicitly allocate the mutex before
2938  * use
2939  */
2940 #define g_static_mutex_lock(mutex) \
2941     g_mutex_lock (g_static_mutex_get_mutex (mutex))
2942 #define g_static_mutex_trylock(mutex) \
2943     g_mutex_trylock (g_static_mutex_get_mutex (mutex))
2944 #define g_static_mutex_unlock(mutex) \
2945     g_mutex_unlock (g_static_mutex_get_mutex (mutex))
2946
2947 struct _GStaticPrivate
2948 {
2949   guint index;
2950 };
2951 #define G_STATIC_PRIVATE_INIT { 0 }
2952 gpointer g_static_private_get (GStaticPrivate   *private_key);
2953 void     g_static_private_set (GStaticPrivate   *private_key,
2954                                gpointer          data,
2955                                GDestroyNotify    notify);
2956 gpointer g_static_private_get_for_thread (GStaticPrivate *private_key,
2957                                           GThread        *thread);
2958 void g_static_private_set_for_thread (GStaticPrivate *private_key,
2959                                       GThread        *thread,
2960                                       gpointer        data,
2961                                       GDestroyNotify  notify);
2962 #ifndef G_STATIC_REC_MUTEX_INIT
2963 /* if GStaticRecMutex is not just a differently initialized GStaticMutex,
2964  * the following is done:
2965  * This can't be done in glibconfig.h, as GStaticPrivate and gboolean
2966  * are not yet known there
2967  */
2968 typedef struct _GStaticRecMutex GStaticRecMutex;
2969 struct _GStaticRecMutex
2970 {
2971   GStaticMutex mutex;
2972   GStaticPrivate counter;
2973 };
2974 #define G_STATIC_REC_MUTEX_INIT { G_STATIC_MUTEX_INIT, G_STATIC_PRIVATE_INIT }
2975 void     g_static_rec_mutex_lock    (GStaticRecMutex* mutex);
2976 gboolean g_static_rec_mutex_trylock (GStaticRecMutex* mutex);
2977 void     g_static_rec_mutex_unlock  (GStaticRecMutex* mutex);
2978 #define  g_static_rec_mutex_get_mutex(mutex) ((mutex)->mutex)
2979 #endif /* G_STATIC_REC_MUTEX_INIT */
2980
2981 typedef struct _GStaticRWLock GStaticRWLock;
2982 struct _GStaticRWLock
2983 {
2984   GStaticMutex mutex;
2985   GCond *read_cond;
2986   GCond *write_cond;
2987   guint read_counter;
2988   gboolean write;
2989   guint want_to_write;
2990 };
2991
2992 #define G_STATIC_RW_LOCK_INIT { G_STATIC_MUTEX_INIT, NULL, NULL, 0, FALSE, FALSE }
2993
2994 void      g_static_rw_lock_reader_lock    (GStaticRWLock* lock);
2995 gboolean  g_static_rw_lock_reader_trylock (GStaticRWLock* lock);
2996 void      g_static_rw_lock_reader_unlock  (GStaticRWLock* lock);
2997 void      g_static_rw_lock_writer_lock    (GStaticRWLock* lock);
2998 gboolean  g_static_rw_lock_writer_trylock (GStaticRWLock* lock);
2999 void      g_static_rw_lock_writer_unlock  (GStaticRWLock* lock);
3000 void      g_static_rw_lock_free (GStaticRWLock* lock);
3001
3002 /* these are some convenience macros that expand to nothing if GLib
3003  * was configured with --disable-threads. for using StaticMutexes,
3004  * you define them with G_LOCK_DEFINE_STATIC (name) or G_LOCK_DEFINE (name)
3005  * if you need to export the mutex. With G_LOCK_EXTERN (name) you can
3006  * declare such an globally defined lock. name is a unique identifier
3007  * for the protected varibale or code portion. locking, testing and
3008  * unlocking of such mutexes can be done with G_LOCK(), G_UNLOCK() and
3009  * G_TRYLOCK() respectively.
3010  */
3011 extern void glib_dummy_decl (void);
3012 #define G_LOCK_NAME(name)               (g__ ## name ## _lock)
3013 #ifdef  G_THREADS_ENABLED
3014 #  define G_LOCK_DEFINE_STATIC(name)    static G_LOCK_DEFINE (name)
3015 #  define G_LOCK_DEFINE(name)           \
3016     GStaticMutex G_LOCK_NAME (name) = G_STATIC_MUTEX_INIT
3017 #  define G_LOCK_EXTERN(name)           extern GStaticMutex G_LOCK_NAME (name)
3018
3019 #  ifdef G_DEBUG_LOCKS
3020 #    define G_LOCK(name)                G_STMT_START{             \
3021         g_log (G_LOG_DOMAIN, G_LOG_LEVEL_DEBUG,                   \
3022                "file %s: line %d (%s): locking: %s ",             \
3023                __FILE__,        __LINE__, G_GNUC_PRETTY_FUNCTION, \
3024                #name);                                            \
3025         g_static_mutex_lock (&G_LOCK_NAME (name));                \
3026      }G_STMT_END
3027 #    define G_UNLOCK(name)              G_STMT_START{             \
3028         g_log (G_LOG_DOMAIN, G_LOG_LEVEL_DEBUG,                   \
3029                "file %s: line %d (%s): unlocking: %s ",           \
3030                __FILE__,        __LINE__, G_GNUC_PRETTY_FUNCTION, \
3031                #name);                                            \
3032        g_static_mutex_unlock (&G_LOCK_NAME (name));               \
3033      }G_STMT_END
3034 #    define G_TRYLOCK(name)             G_STMT_START{             \
3035         g_log (G_LOG_DOMAIN, G_LOG_LEVEL_DEBUG,                   \
3036                "file %s: line %d (%s): try locking: %s ",         \
3037                __FILE__,        __LINE__, G_GNUC_PRETTY_FUNCTION, \
3038                #name);                                            \
3039      }G_STMT_END,       g_static_mutex_trylock (&G_LOCK_NAME (name))
3040 #  else  /* !G_DEBUG_LOCKS */
3041 #    define G_LOCK(name) g_static_mutex_lock       (&G_LOCK_NAME (name))
3042 #    define G_UNLOCK(name) g_static_mutex_unlock   (&G_LOCK_NAME (name))
3043 #    define G_TRYLOCK(name) g_static_mutex_trylock (&G_LOCK_NAME (name))
3044 #  endif /* !G_DEBUG_LOCKS */
3045 #else   /* !G_THREADS_ENABLED */
3046 #  define G_LOCK_DEFINE_STATIC(name)    extern void glib_dummy_decl (void)
3047 #  define G_LOCK_DEFINE(name)           extern void glib_dummy_decl (void)
3048 #  define G_LOCK_EXTERN(name)           extern void glib_dummy_decl (void)
3049 #  define G_LOCK(name)
3050 #  define G_UNLOCK(name)
3051 #  define G_TRYLOCK(name)               (FALSE)
3052 #endif  /* !G_THREADS_ENABLED */
3053
3054 #ifdef __cplusplus
3055 }
3056 #endif /* __cplusplus */
3057
3058
3059 #endif /* __G_LIB_H__ */