1 /* GLIB - Library of useful routines for C programming
2 * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
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.
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.
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.
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/.
35 #define MIN_ARRAY_SIZE 16
37 typedef struct _GRealArray GRealArray;
45 guint zero_terminated : 1;
49 #define g_array_elt_len(array,i) ((array)->elt_size * (i))
50 #define g_array_elt_pos(array,i) ((array)->data + g_array_elt_len((array),(i)))
51 #define g_array_elt_zero(array, pos, len) \
52 (memset (g_array_elt_pos ((array), pos), 0, g_array_elt_len ((array), len)))
53 #define g_array_zero_terminate(array) G_STMT_START{ \
54 if ((array)->zero_terminated) \
55 g_array_elt_zero ((array), (array)->len, 1); \
58 static gint g_nearest_pow (gint num);
59 static void g_array_maybe_expand (GRealArray *array,
62 static GMemChunk *array_mem_chunk = NULL;
63 G_LOCK_DEFINE_STATIC (array_mem_chunk);
66 g_array_new (gboolean zero_terminated,
70 return (GArray*) g_array_sized_new (zero_terminated, clear, elt_size, 0);
73 GArray* g_array_sized_new (gboolean zero_terminated,
80 G_LOCK (array_mem_chunk);
82 array_mem_chunk = g_mem_chunk_new ("array mem chunk",
84 1024, G_ALLOC_AND_FREE);
86 array = g_chunk_new (GRealArray, array_mem_chunk);
87 G_UNLOCK (array_mem_chunk);
92 array->zero_terminated = (zero_terminated ? 1 : 0);
93 array->clear = (clear ? 1 : 0);
94 array->elt_size = elt_size;
96 if (array->zero_terminated || reserved_size != 0)
98 g_array_maybe_expand (array, reserved_size);
99 g_array_zero_terminate(array);
102 return (GArray*) array;
106 g_array_free (GArray *array,
107 gboolean free_segment)
110 g_free (array->data);
112 G_LOCK (array_mem_chunk);
113 g_mem_chunk_free (array_mem_chunk, array);
114 G_UNLOCK (array_mem_chunk);
118 g_array_append_vals (GArray *farray,
122 GRealArray *array = (GRealArray*) farray;
124 g_array_maybe_expand (array, len);
126 memcpy (g_array_elt_pos (array, array->len), data,
127 g_array_elt_len (array, len));
131 g_array_zero_terminate (array);
137 g_array_prepend_vals (GArray *farray,
141 GRealArray *array = (GRealArray*) farray;
143 g_array_maybe_expand (array, len);
145 g_memmove (g_array_elt_pos (array, len), g_array_elt_pos (array, 0),
146 g_array_elt_len (array, array->len));
148 memcpy (g_array_elt_pos (array, 0), data, g_array_elt_len (array, len));
152 g_array_zero_terminate (array);
158 g_array_insert_vals (GArray *farray,
163 GRealArray *array = (GRealArray*) farray;
165 g_array_maybe_expand (array, len);
167 g_memmove (g_array_elt_pos (array, len + index),
168 g_array_elt_pos (array, index),
169 g_array_elt_len (array, array->len - index));
171 memcpy (g_array_elt_pos (array, index), data, g_array_elt_len (array, len));
175 g_array_zero_terminate (array);
181 g_array_set_size (GArray *farray,
184 GRealArray *array = (GRealArray*) farray;
186 if (array->len < length)
188 g_array_maybe_expand (array, length - array->len);
191 g_array_elt_zero (array, array->len, length - array->len);
196 g_array_zero_terminate (array);
202 g_array_remove_index (GArray* farray,
205 GRealArray* array = (GRealArray*) farray;
207 g_return_val_if_fail (array, NULL);
209 g_return_val_if_fail (index >= 0 && index < array->len, NULL);
211 if (index != array->len - 1)
212 g_memmove (g_array_elt_pos (array, index),
213 g_array_elt_pos (array, index + 1),
214 g_array_elt_len (array, array->len - index - 1));
218 g_array_zero_terminate (array);
224 g_array_remove_index_fast (GArray* farray,
227 GRealArray* array = (GRealArray*) farray;
229 g_return_val_if_fail (array, NULL);
231 g_return_val_if_fail (index >= 0 && index < array->len, NULL);
233 if (index != array->len - 1)
234 g_memmove (g_array_elt_pos (array, index),
235 g_array_elt_pos (array, array->len - 1),
236 g_array_elt_len (array, 1));
240 g_array_zero_terminate (array);
246 g_nearest_pow (gint num)
257 g_array_maybe_expand (GRealArray *array,
260 guint want_alloc = g_array_elt_len (array, array->len + len +
261 array->zero_terminated);
263 if (want_alloc > array->alloc)
265 array->alloc = g_nearest_pow (want_alloc);
266 array->alloc = MAX (array->alloc, MIN_ARRAY_SIZE);
268 array->data = g_realloc (array->data, array->alloc);
275 typedef struct _GRealPtrArray GRealPtrArray;
277 struct _GRealPtrArray
284 static void g_ptr_array_maybe_expand (GRealPtrArray *array,
287 static GMemChunk *ptr_array_mem_chunk = NULL;
288 G_LOCK_DEFINE_STATIC (ptr_array_mem_chunk);
292 g_ptr_array_new (void)
294 return g_ptr_array_sized_new (0);
298 g_ptr_array_sized_new (guint reserved_size)
300 GRealPtrArray *array;
302 G_LOCK (ptr_array_mem_chunk);
303 if (!ptr_array_mem_chunk)
304 ptr_array_mem_chunk = g_mem_chunk_new ("array mem chunk",
305 sizeof (GRealPtrArray),
306 1024, G_ALLOC_AND_FREE);
308 array = g_chunk_new (GRealPtrArray, ptr_array_mem_chunk);
309 G_UNLOCK (ptr_array_mem_chunk);
315 if (reserved_size != 0)
316 g_ptr_array_maybe_expand (array, reserved_size);
318 return (GPtrArray*) array;
322 g_ptr_array_free (GPtrArray *array,
323 gboolean free_segment)
325 g_return_if_fail (array);
328 g_free (array->pdata);
330 G_LOCK (ptr_array_mem_chunk);
331 g_mem_chunk_free (ptr_array_mem_chunk, array);
332 G_UNLOCK (ptr_array_mem_chunk);
336 g_ptr_array_maybe_expand (GRealPtrArray *array,
339 if ((array->len + len) > array->alloc)
341 array->alloc = g_nearest_pow (array->len + len);
342 array->alloc = MAX (array->alloc, MIN_ARRAY_SIZE);
343 array->pdata = g_realloc (array->pdata, sizeof(gpointer) * array->alloc);
348 g_ptr_array_set_size (GPtrArray *farray,
351 GRealPtrArray* array = (GRealPtrArray*) farray;
353 g_return_if_fail (array);
355 if (length > array->len)
358 g_ptr_array_maybe_expand (array, (length - array->len));
360 * memset (array->pdata + array->len, 0,
361 * sizeof (gpointer) * (length - array->len));
362 * to make it really portable. Remember (void*)NULL needn't be
363 * bitwise zero. It of course is silly not to use memset (..,0,..).
365 for (i = array->len; i < length; i++)
366 array->pdata[i] = NULL;
373 g_ptr_array_remove_index (GPtrArray* farray,
376 GRealPtrArray* array = (GRealPtrArray*) farray;
379 g_return_val_if_fail (array, NULL);
381 g_return_val_if_fail (index >= 0 && index < array->len, NULL);
383 result = array->pdata[index];
385 if (index != array->len - 1)
386 g_memmove (array->pdata + index, array->pdata + index + 1,
387 sizeof (gpointer) * (array->len - index - 1));
395 g_ptr_array_remove_index_fast (GPtrArray* farray,
398 GRealPtrArray* array = (GRealPtrArray*) farray;
401 g_return_val_if_fail (array, NULL);
403 g_return_val_if_fail (index >= 0 && index < array->len, NULL);
405 result = array->pdata[index];
407 if (index != array->len - 1)
408 array->pdata[index] = array->pdata[array->len - 1];
416 g_ptr_array_remove (GPtrArray* farray,
419 GRealPtrArray* array = (GRealPtrArray*) farray;
422 g_return_val_if_fail (array, FALSE);
424 for (i = 0; i < array->len; i += 1)
426 if (array->pdata[i] == data)
428 g_ptr_array_remove_index (farray, i);
437 g_ptr_array_remove_fast (GPtrArray* farray,
440 GRealPtrArray* array = (GRealPtrArray*) farray;
443 g_return_val_if_fail (array, FALSE);
445 for (i = 0; i < array->len; i += 1)
447 if (array->pdata[i] == data)
449 g_ptr_array_remove_index_fast (farray, i);
458 g_ptr_array_add (GPtrArray* farray,
461 GRealPtrArray* array = (GRealPtrArray*) farray;
463 g_return_if_fail (array);
465 g_ptr_array_maybe_expand (array, 1);
467 array->pdata[array->len++] = data;
473 GByteArray* g_byte_array_new (void)
475 return (GByteArray*) g_array_sized_new (FALSE, FALSE, 1, 0);
478 GByteArray* g_byte_array_sized_new (guint reserved_size)
480 return (GByteArray*) g_array_sized_new (FALSE, FALSE, 1, reserved_size);
483 void g_byte_array_free (GByteArray *array,
484 gboolean free_segment)
486 g_array_free ((GArray*) array, free_segment);
489 GByteArray* g_byte_array_append (GByteArray *array,
493 g_array_append_vals ((GArray*) array, (guint8*)data, len);
498 GByteArray* g_byte_array_prepend (GByteArray *array,
502 g_array_prepend_vals ((GArray*) array, (guint8*)data, len);
507 GByteArray* g_byte_array_set_size (GByteArray *array,
510 g_array_set_size ((GArray*) array, length);
515 GByteArray* g_byte_array_remove_index (GByteArray *array,
518 g_array_remove_index((GArray*) array, index);
523 GByteArray* g_byte_array_remove_index_fast (GByteArray *array,
526 g_array_remove_index_fast((GArray*) array, index);