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 Lesser 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 * Lesser General Public License for more details.
14 * You should have received a copy of the GNU Lesser 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 1997-2000. 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/.
40 #define MIN_ARRAY_SIZE 16
42 typedef struct _GRealArray GRealArray;
50 guint zero_terminated : 1;
54 #define g_array_elt_len(array,i) ((array)->elt_size * (i))
55 #define g_array_elt_pos(array,i) ((array)->data + g_array_elt_len((array),(i)))
56 #define g_array_elt_zero(array, pos, len) \
57 (memset (g_array_elt_pos ((array), pos), 0, g_array_elt_len ((array), len)))
58 #define g_array_zero_terminate(array) G_STMT_START{ \
59 if ((array)->zero_terminated) \
60 g_array_elt_zero ((array), (array)->len, 1); \
63 static gint g_nearest_pow (gint num) G_GNUC_CONST;
64 static void g_array_maybe_expand (GRealArray *array,
67 static GMemChunk *array_mem_chunk = NULL;
68 G_LOCK_DEFINE_STATIC (array_mem_chunk);
71 g_array_new (gboolean zero_terminated,
75 return (GArray*) g_array_sized_new (zero_terminated, clear, elt_size, 0);
78 GArray* g_array_sized_new (gboolean zero_terminated,
85 G_LOCK (array_mem_chunk);
87 array_mem_chunk = g_mem_chunk_new ("array mem chunk",
89 1024, G_ALLOC_AND_FREE);
91 array = g_chunk_new (GRealArray, array_mem_chunk);
92 G_UNLOCK (array_mem_chunk);
97 array->zero_terminated = (zero_terminated ? 1 : 0);
98 array->clear = (clear ? 1 : 0);
99 array->elt_size = elt_size;
101 if (array->zero_terminated || reserved_size != 0)
103 g_array_maybe_expand (array, reserved_size);
104 g_array_zero_terminate(array);
107 return (GArray*) array;
111 g_array_free (GArray *array,
112 gboolean free_segment)
116 g_return_val_if_fail (array, NULL);
120 g_free (array->data);
124 segment = array->data;
126 G_LOCK (array_mem_chunk);
127 g_mem_chunk_free (array_mem_chunk, array);
128 G_UNLOCK (array_mem_chunk);
134 g_array_append_vals (GArray *farray,
138 GRealArray *array = (GRealArray*) farray;
140 g_array_maybe_expand (array, len);
142 memcpy (g_array_elt_pos (array, array->len), data,
143 g_array_elt_len (array, len));
147 g_array_zero_terminate (array);
153 g_array_prepend_vals (GArray *farray,
157 GRealArray *array = (GRealArray*) farray;
159 g_array_maybe_expand (array, len);
161 g_memmove (g_array_elt_pos (array, len), g_array_elt_pos (array, 0),
162 g_array_elt_len (array, array->len));
164 memcpy (g_array_elt_pos (array, 0), data, g_array_elt_len (array, len));
168 g_array_zero_terminate (array);
174 g_array_insert_vals (GArray *farray,
179 GRealArray *array = (GRealArray*) farray;
181 g_array_maybe_expand (array, len);
183 g_memmove (g_array_elt_pos (array, len + index),
184 g_array_elt_pos (array, index),
185 g_array_elt_len (array, array->len - index));
187 memcpy (g_array_elt_pos (array, index), data, g_array_elt_len (array, len));
191 g_array_zero_terminate (array);
197 g_array_set_size (GArray *farray,
200 GRealArray *array = (GRealArray*) farray;
201 if (length > array->len)
203 g_array_maybe_expand (array, length - array->len);
206 g_array_elt_zero (array, array->len, length - array->len);
208 #ifdef ENABLE_GC_FRIENDLY
209 else if (length < array->len)
210 g_array_elt_zero (array, length, array->len - length);
211 #endif /* ENABLE_GC_FRIENDLY */
215 g_array_zero_terminate (array);
221 g_array_remove_index (GArray* farray,
224 GRealArray* array = (GRealArray*) farray;
226 g_return_val_if_fail (array, NULL);
228 g_return_val_if_fail (index < array->len, NULL);
230 if (index != array->len - 1)
231 g_memmove (g_array_elt_pos (array, index),
232 g_array_elt_pos (array, index + 1),
233 g_array_elt_len (array, array->len - index - 1));
237 #ifdef ENABLE_GC_FRIENDLY
238 g_array_elt_zero (array, array->len, 1);
239 #else /* !ENABLE_GC_FRIENDLY */
240 g_array_zero_terminate (array);
241 #endif /* ENABLE_GC_FRIENDLY */
247 g_array_remove_index_fast (GArray* farray,
250 GRealArray* array = (GRealArray*) farray;
252 g_return_val_if_fail (array, NULL);
254 g_return_val_if_fail (index < array->len, NULL);
256 if (index != array->len - 1)
257 memcpy (g_array_elt_pos (array, index),
258 g_array_elt_pos (array, array->len - 1),
259 g_array_elt_len (array, 1));
263 #ifdef ENABLE_GC_FRIENDLY
264 g_array_elt_zero (array, array->len, 1);
265 #else /* !ENABLE_GC_FRIENDLY */
266 g_array_zero_terminate (array);
267 #endif /* ENABLE_GC_FRIENDLY */
273 g_array_sort (GArray *farray,
274 GCompareFunc compare_func)
276 GRealArray *array = (GRealArray*) farray;
278 g_return_if_fail (array != NULL);
279 g_return_if_fail (array->data != NULL);
288 g_array_sort_with_data (GArray *farray,
289 GCompareDataFunc compare_func,
292 GRealArray *array = (GRealArray*) farray;
294 g_return_if_fail (array != NULL);
295 g_return_if_fail (array->data != NULL);
297 g_qsort_with_data (array->data,
306 g_nearest_pow (gint num)
317 g_array_maybe_expand (GRealArray *array,
320 guint want_alloc = g_array_elt_len (array, array->len + len +
321 array->zero_terminated);
323 if (want_alloc > array->alloc)
325 want_alloc = g_nearest_pow (want_alloc);
326 want_alloc = MAX (want_alloc, MIN_ARRAY_SIZE);
328 array->data = g_realloc (array->data, want_alloc);
330 #ifdef ENABLE_GC_FRIENDLY
331 memset (array->data + array->alloc, 0, want_alloc - array->alloc);
332 #endif /* ENABLE_GC_FRIENDLY */
334 array->alloc = want_alloc;
341 typedef struct _GRealPtrArray GRealPtrArray;
343 struct _GRealPtrArray
350 static void g_ptr_array_maybe_expand (GRealPtrArray *array,
353 static GMemChunk *ptr_array_mem_chunk = NULL;
354 G_LOCK_DEFINE_STATIC (ptr_array_mem_chunk);
358 g_ptr_array_new (void)
360 return g_ptr_array_sized_new (0);
364 g_ptr_array_sized_new (guint reserved_size)
366 GRealPtrArray *array;
368 G_LOCK (ptr_array_mem_chunk);
369 if (!ptr_array_mem_chunk)
370 ptr_array_mem_chunk = g_mem_chunk_new ("array mem chunk",
371 sizeof (GRealPtrArray),
372 1024, G_ALLOC_AND_FREE);
374 array = g_chunk_new (GRealPtrArray, ptr_array_mem_chunk);
375 G_UNLOCK (ptr_array_mem_chunk);
381 if (reserved_size != 0)
382 g_ptr_array_maybe_expand (array, reserved_size);
384 return (GPtrArray*) array;
388 g_ptr_array_free (GPtrArray *array,
389 gboolean free_segment)
393 g_return_val_if_fail (array, NULL);
397 g_free (array->pdata);
401 segment = array->pdata;
403 G_LOCK (ptr_array_mem_chunk);
404 g_mem_chunk_free (ptr_array_mem_chunk, array);
405 G_UNLOCK (ptr_array_mem_chunk);
411 g_ptr_array_maybe_expand (GRealPtrArray *array,
414 if ((array->len + len) > array->alloc)
416 #ifdef ENABLE_GC_FRIENDLY
417 guint old_alloc = array->alloc;
418 #endif /* ENABLE_GC_FRIENDLY */
419 array->alloc = g_nearest_pow (array->len + len);
420 array->alloc = MAX (array->alloc, MIN_ARRAY_SIZE);
421 array->pdata = g_realloc (array->pdata, sizeof(gpointer) * array->alloc);
422 #ifdef ENABLE_GC_FRIENDLY
423 for ( ; old_alloc < array->alloc; old_alloc++)
424 array->pdata [old_alloc] = NULL;
425 #endif /* ENABLE_GC_FRIENDLY */
430 g_ptr_array_set_size (GPtrArray *farray,
433 GRealPtrArray* array = (GRealPtrArray*) farray;
435 g_return_if_fail (array);
437 if (length > array->len)
440 g_ptr_array_maybe_expand (array, (length - array->len));
442 * memset (array->pdata + array->len, 0,
443 * sizeof (gpointer) * (length - array->len));
444 * to make it really portable. Remember (void*)NULL needn't be
445 * bitwise zero. It of course is silly not to use memset (..,0,..).
447 for (i = array->len; i < length; i++)
448 array->pdata[i] = NULL;
450 #ifdef ENABLE_GC_FRIENDLY
451 else if (length < array->len)
454 for (i = length; i < array->len; i++)
455 array->pdata[i] = NULL;
457 #endif /* ENABLE_GC_FRIENDLY */
463 g_ptr_array_remove_index (GPtrArray* farray,
466 GRealPtrArray* array = (GRealPtrArray*) farray;
469 g_return_val_if_fail (array, NULL);
471 g_return_val_if_fail (index < array->len, NULL);
473 result = array->pdata[index];
475 if (index != array->len - 1)
476 g_memmove (array->pdata + index, array->pdata + index + 1,
477 sizeof (gpointer) * (array->len - index - 1));
481 #ifdef ENABLE_GC_FRIENDLY
482 array->pdata[array->len] = NULL;
483 #endif /* ENABLE_GC_FRIENDLY */
489 g_ptr_array_remove_index_fast (GPtrArray* farray,
492 GRealPtrArray* array = (GRealPtrArray*) farray;
495 g_return_val_if_fail (array, NULL);
497 g_return_val_if_fail (index < array->len, NULL);
499 result = array->pdata[index];
501 if (index != array->len - 1)
502 array->pdata[index] = array->pdata[array->len - 1];
506 #ifdef ENABLE_GC_FRIENDLY
507 array->pdata[array->len] = NULL;
508 #endif /* ENABLE_GC_FRIENDLY */
514 g_ptr_array_remove (GPtrArray* farray,
517 GRealPtrArray* array = (GRealPtrArray*) farray;
520 g_return_val_if_fail (array, FALSE);
522 for (i = 0; i < array->len; i += 1)
524 if (array->pdata[i] == data)
526 g_ptr_array_remove_index (farray, i);
535 g_ptr_array_remove_fast (GPtrArray* farray,
538 GRealPtrArray* array = (GRealPtrArray*) farray;
541 g_return_val_if_fail (array, FALSE);
543 for (i = 0; i < array->len; i += 1)
545 if (array->pdata[i] == data)
547 g_ptr_array_remove_index_fast (farray, i);
556 g_ptr_array_add (GPtrArray* farray,
559 GRealPtrArray* array = (GRealPtrArray*) farray;
561 g_return_if_fail (array);
563 g_ptr_array_maybe_expand (array, 1);
565 array->pdata[array->len++] = data;
569 g_ptr_array_sort (GPtrArray *array,
570 GCompareFunc compare_func)
572 g_return_if_fail (array != NULL);
573 g_return_if_fail (array->pdata != NULL);
582 g_ptr_array_sort_with_data (GPtrArray *array,
583 GCompareDataFunc compare_func,
586 g_return_if_fail (array != NULL);
587 g_return_if_fail (array->pdata != NULL);
589 g_qsort_with_data (array->pdata,
599 GByteArray* g_byte_array_new (void)
601 return (GByteArray*) g_array_sized_new (FALSE, FALSE, 1, 0);
604 GByteArray* g_byte_array_sized_new (guint reserved_size)
606 return (GByteArray*) g_array_sized_new (FALSE, FALSE, 1, reserved_size);
609 guint8* g_byte_array_free (GByteArray *array,
610 gboolean free_segment)
612 return (guint8*) g_array_free ((GArray*) array, free_segment);
615 GByteArray* g_byte_array_append (GByteArray *array,
619 g_array_append_vals ((GArray*) array, (guint8*)data, len);
624 GByteArray* g_byte_array_prepend (GByteArray *array,
628 g_array_prepend_vals ((GArray*) array, (guint8*)data, len);
633 GByteArray* g_byte_array_set_size (GByteArray *array,
636 g_array_set_size ((GArray*) array, length);
641 GByteArray* g_byte_array_remove_index (GByteArray *array,
644 g_array_remove_index((GArray*) array, index);
649 GByteArray* g_byte_array_remove_index_fast (GByteArray *array,
652 g_array_remove_index_fast((GArray*) array, index);
658 g_byte_array_sort (GByteArray *array,
659 GCompareFunc compare_func)
661 g_array_sort ((GArray *) array, compare_func);
665 g_byte_array_sort_with_data (GByteArray *array,
666 GCompareDataFunc compare_func,
669 g_array_sort_with_data ((GArray *) array, compare_func, user_data);