/src/libxml2-2.10.3/xmlmemory.c
Line | Count | Source (jump to first uncovered line) |
1 | | /* |
2 | | * xmlmemory.c: libxml memory allocator wrapper. |
3 | | * |
4 | | * daniel@veillard.com |
5 | | */ |
6 | | |
7 | | #define IN_LIBXML |
8 | | #include "libxml.h" |
9 | | |
10 | | #include <string.h> |
11 | | #include <stdlib.h> |
12 | | #include <ctype.h> |
13 | | #include <time.h> |
14 | | |
15 | | /* #define DEBUG_MEMORY */ |
16 | | |
17 | | /** |
18 | | * MEM_LIST: |
19 | | * |
20 | | * keep track of all allocated blocks for error reporting |
21 | | * Always build the memory list ! |
22 | | */ |
23 | | #ifdef DEBUG_MEMORY_LOCATION |
24 | | #ifndef MEM_LIST |
25 | | #define MEM_LIST /* keep a list of all the allocated memory blocks */ |
26 | | #endif |
27 | | #endif |
28 | | |
29 | | #include <libxml/globals.h> /* must come before xmlmemory.h */ |
30 | | #include <libxml/xmlmemory.h> |
31 | | #include <libxml/xmlerror.h> |
32 | | #include <libxml/threads.h> |
33 | | |
34 | | static int xmlMemInitialized = 0; |
35 | | static unsigned long debugMemSize = 0; |
36 | | static unsigned long debugMemBlocks = 0; |
37 | | static unsigned long debugMaxMemSize = 0; |
38 | | static xmlMutexPtr xmlMemMutex = NULL; |
39 | | |
40 | | void xmlMallocBreakpoint(void); |
41 | | |
42 | | /************************************************************************ |
43 | | * * |
44 | | * Macros, variables and associated types * |
45 | | * * |
46 | | ************************************************************************/ |
47 | | |
48 | | #if !defined(LIBXML_THREAD_ENABLED) && !defined(LIBXML_THREAD_ALLOC_ENABLED) |
49 | | #ifdef xmlMalloc |
50 | | #undef xmlMalloc |
51 | | #endif |
52 | | #ifdef xmlRealloc |
53 | | #undef xmlRealloc |
54 | | #endif |
55 | | #ifdef xmlMemStrdup |
56 | | #undef xmlMemStrdup |
57 | | #endif |
58 | | #endif |
59 | | |
60 | | /* |
61 | | * Each of the blocks allocated begin with a header containing information |
62 | | */ |
63 | | |
64 | 0 | #define MEMTAG 0x5aa5U |
65 | | |
66 | 0 | #define MALLOC_TYPE 1 |
67 | 0 | #define REALLOC_TYPE 2 |
68 | 0 | #define STRDUP_TYPE 3 |
69 | 0 | #define MALLOC_ATOMIC_TYPE 4 |
70 | | #define REALLOC_ATOMIC_TYPE 5 |
71 | | |
72 | | typedef struct memnod { |
73 | | unsigned int mh_tag; |
74 | | unsigned int mh_type; |
75 | | unsigned long mh_number; |
76 | | size_t mh_size; |
77 | | #ifdef MEM_LIST |
78 | | struct memnod *mh_next; |
79 | | struct memnod *mh_prev; |
80 | | #endif |
81 | | const char *mh_file; |
82 | | unsigned int mh_line; |
83 | | } MEMHDR; |
84 | | |
85 | | |
86 | | #ifdef SUN4 |
87 | | #define ALIGN_SIZE 16 |
88 | | #else |
89 | 0 | #define ALIGN_SIZE sizeof(double) |
90 | | #endif |
91 | 0 | #define HDR_SIZE sizeof(MEMHDR) |
92 | 0 | #define RESERVE_SIZE (((HDR_SIZE + (ALIGN_SIZE-1)) \ |
93 | 0 | / ALIGN_SIZE ) * ALIGN_SIZE) |
94 | | |
95 | 0 | #define MAX_SIZE_T ((size_t)-1) |
96 | | |
97 | 0 | #define CLIENT_2_HDR(a) ((void *) (((char *) (a)) - RESERVE_SIZE)) |
98 | 0 | #define HDR_2_CLIENT(a) ((void *) (((char *) (a)) + RESERVE_SIZE)) |
99 | | |
100 | | |
101 | | static unsigned int block=0; |
102 | | static unsigned int xmlMemStopAtBlock = 0; |
103 | | static void *xmlMemTraceBlockAt = NULL; |
104 | | #ifdef MEM_LIST |
105 | | static MEMHDR *memlist = NULL; |
106 | | #endif |
107 | | |
108 | | static void debugmem_tag_error(void *addr); |
109 | | #ifdef MEM_LIST |
110 | | static void debugmem_list_add(MEMHDR *); |
111 | | static void debugmem_list_delete(MEMHDR *); |
112 | | #endif |
113 | 0 | #define Mem_Tag_Err(a) debugmem_tag_error(a); |
114 | | |
115 | | #ifndef TEST_POINT |
116 | | #define TEST_POINT |
117 | | #endif |
118 | | |
119 | | /** |
120 | | * xmlMallocBreakpoint: |
121 | | * |
122 | | * Breakpoint to use in conjunction with xmlMemStopAtBlock. When the block |
123 | | * number reaches the specified value this function is called. One need to add a breakpoint |
124 | | * to it to get the context in which the given block is allocated. |
125 | | */ |
126 | | |
127 | | void |
128 | 0 | xmlMallocBreakpoint(void) { |
129 | 0 | xmlGenericError(xmlGenericErrorContext, |
130 | 0 | "xmlMallocBreakpoint reached on block %d\n", xmlMemStopAtBlock); |
131 | 0 | } |
132 | | |
133 | | /** |
134 | | * xmlMallocLoc: |
135 | | * @size: an int specifying the size in byte to allocate. |
136 | | * @file: the file name or NULL |
137 | | * @line: the line number |
138 | | * |
139 | | * a malloc() equivalent, with logging of the allocation info. |
140 | | * |
141 | | * Returns a pointer to the allocated area or NULL in case of lack of memory. |
142 | | */ |
143 | | |
144 | | void * |
145 | | xmlMallocLoc(size_t size, const char * file, int line) |
146 | 0 | { |
147 | 0 | MEMHDR *p; |
148 | 0 | void *ret; |
149 | |
|
150 | 0 | if (!xmlMemInitialized) xmlInitMemory(); |
151 | | #ifdef DEBUG_MEMORY |
152 | | xmlGenericError(xmlGenericErrorContext, |
153 | | "Malloc(%d)\n",size); |
154 | | #endif |
155 | | |
156 | | TEST_POINT |
157 | |
|
158 | 0 | if (size > (MAX_SIZE_T - RESERVE_SIZE)) { |
159 | 0 | xmlGenericError(xmlGenericErrorContext, |
160 | 0 | "xmlMallocLoc : Unsigned overflow\n"); |
161 | 0 | xmlMemoryDump(); |
162 | 0 | return(NULL); |
163 | 0 | } |
164 | | |
165 | 0 | p = (MEMHDR *) malloc(RESERVE_SIZE+size); |
166 | |
|
167 | 0 | if (!p) { |
168 | 0 | xmlGenericError(xmlGenericErrorContext, |
169 | 0 | "xmlMallocLoc : Out of free space\n"); |
170 | 0 | xmlMemoryDump(); |
171 | 0 | return(NULL); |
172 | 0 | } |
173 | 0 | p->mh_tag = MEMTAG; |
174 | 0 | p->mh_size = size; |
175 | 0 | p->mh_type = MALLOC_TYPE; |
176 | 0 | p->mh_file = file; |
177 | 0 | p->mh_line = line; |
178 | 0 | xmlMutexLock(xmlMemMutex); |
179 | 0 | p->mh_number = ++block; |
180 | 0 | debugMemSize += size; |
181 | 0 | debugMemBlocks++; |
182 | 0 | if (debugMemSize > debugMaxMemSize) debugMaxMemSize = debugMemSize; |
183 | | #ifdef MEM_LIST |
184 | | debugmem_list_add(p); |
185 | | #endif |
186 | 0 | xmlMutexUnlock(xmlMemMutex); |
187 | |
|
188 | | #ifdef DEBUG_MEMORY |
189 | | xmlGenericError(xmlGenericErrorContext, |
190 | | "Malloc(%d) Ok\n",size); |
191 | | #endif |
192 | |
|
193 | 0 | if (xmlMemStopAtBlock == p->mh_number) xmlMallocBreakpoint(); |
194 | |
|
195 | 0 | ret = HDR_2_CLIENT(p); |
196 | |
|
197 | 0 | if (xmlMemTraceBlockAt == ret) { |
198 | 0 | xmlGenericError(xmlGenericErrorContext, |
199 | 0 | "%p : Malloc(%lu) Ok\n", xmlMemTraceBlockAt, |
200 | 0 | (long unsigned)size); |
201 | 0 | xmlMallocBreakpoint(); |
202 | 0 | } |
203 | | |
204 | | TEST_POINT |
205 | |
|
206 | 0 | return(ret); |
207 | 0 | } |
208 | | |
209 | | /** |
210 | | * xmlMallocAtomicLoc: |
211 | | * @size: an unsigned int specifying the size in byte to allocate. |
212 | | * @file: the file name or NULL |
213 | | * @line: the line number |
214 | | * |
215 | | * a malloc() equivalent, with logging of the allocation info. |
216 | | * |
217 | | * Returns a pointer to the allocated area or NULL in case of lack of memory. |
218 | | */ |
219 | | |
220 | | void * |
221 | | xmlMallocAtomicLoc(size_t size, const char * file, int line) |
222 | 0 | { |
223 | 0 | MEMHDR *p; |
224 | 0 | void *ret; |
225 | |
|
226 | 0 | if (!xmlMemInitialized) xmlInitMemory(); |
227 | | #ifdef DEBUG_MEMORY |
228 | | xmlGenericError(xmlGenericErrorContext, |
229 | | "Malloc(%d)\n",size); |
230 | | #endif |
231 | | |
232 | | TEST_POINT |
233 | |
|
234 | 0 | if (size > (MAX_SIZE_T - RESERVE_SIZE)) { |
235 | 0 | xmlGenericError(xmlGenericErrorContext, |
236 | 0 | "xmlMallocAtomicLoc : Unsigned overflow\n"); |
237 | 0 | xmlMemoryDump(); |
238 | 0 | return(NULL); |
239 | 0 | } |
240 | | |
241 | 0 | p = (MEMHDR *) malloc(RESERVE_SIZE+size); |
242 | |
|
243 | 0 | if (!p) { |
244 | 0 | xmlGenericError(xmlGenericErrorContext, |
245 | 0 | "xmlMallocAtomicLoc : Out of free space\n"); |
246 | 0 | xmlMemoryDump(); |
247 | 0 | return(NULL); |
248 | 0 | } |
249 | 0 | p->mh_tag = MEMTAG; |
250 | 0 | p->mh_size = size; |
251 | 0 | p->mh_type = MALLOC_ATOMIC_TYPE; |
252 | 0 | p->mh_file = file; |
253 | 0 | p->mh_line = line; |
254 | 0 | xmlMutexLock(xmlMemMutex); |
255 | 0 | p->mh_number = ++block; |
256 | 0 | debugMemSize += size; |
257 | 0 | debugMemBlocks++; |
258 | 0 | if (debugMemSize > debugMaxMemSize) debugMaxMemSize = debugMemSize; |
259 | | #ifdef MEM_LIST |
260 | | debugmem_list_add(p); |
261 | | #endif |
262 | 0 | xmlMutexUnlock(xmlMemMutex); |
263 | |
|
264 | | #ifdef DEBUG_MEMORY |
265 | | xmlGenericError(xmlGenericErrorContext, |
266 | | "Malloc(%d) Ok\n",size); |
267 | | #endif |
268 | |
|
269 | 0 | if (xmlMemStopAtBlock == p->mh_number) xmlMallocBreakpoint(); |
270 | |
|
271 | 0 | ret = HDR_2_CLIENT(p); |
272 | |
|
273 | 0 | if (xmlMemTraceBlockAt == ret) { |
274 | 0 | xmlGenericError(xmlGenericErrorContext, |
275 | 0 | "%p : Malloc(%lu) Ok\n", xmlMemTraceBlockAt, |
276 | 0 | (long unsigned)size); |
277 | 0 | xmlMallocBreakpoint(); |
278 | 0 | } |
279 | | |
280 | | TEST_POINT |
281 | |
|
282 | 0 | return(ret); |
283 | 0 | } |
284 | | /** |
285 | | * xmlMemMalloc: |
286 | | * @size: an int specifying the size in byte to allocate. |
287 | | * |
288 | | * a malloc() equivalent, with logging of the allocation info. |
289 | | * |
290 | | * Returns a pointer to the allocated area or NULL in case of lack of memory. |
291 | | */ |
292 | | |
293 | | void * |
294 | | xmlMemMalloc(size_t size) |
295 | 0 | { |
296 | 0 | return(xmlMallocLoc(size, "none", 0)); |
297 | 0 | } |
298 | | |
299 | | /** |
300 | | * xmlReallocLoc: |
301 | | * @ptr: the initial memory block pointer |
302 | | * @size: an int specifying the size in byte to allocate. |
303 | | * @file: the file name or NULL |
304 | | * @line: the line number |
305 | | * |
306 | | * a realloc() equivalent, with logging of the allocation info. |
307 | | * |
308 | | * Returns a pointer to the allocated area or NULL in case of lack of memory. |
309 | | */ |
310 | | |
311 | | void * |
312 | | xmlReallocLoc(void *ptr,size_t size, const char * file, int line) |
313 | 0 | { |
314 | 0 | MEMHDR *p, *tmp; |
315 | 0 | unsigned long number; |
316 | | #ifdef DEBUG_MEMORY |
317 | | size_t oldsize; |
318 | | #endif |
319 | |
|
320 | 0 | if (ptr == NULL) |
321 | 0 | return(xmlMallocLoc(size, file, line)); |
322 | | |
323 | 0 | if (!xmlMemInitialized) xmlInitMemory(); |
324 | 0 | TEST_POINT |
325 | |
|
326 | 0 | p = CLIENT_2_HDR(ptr); |
327 | 0 | number = p->mh_number; |
328 | 0 | if (xmlMemStopAtBlock == number) xmlMallocBreakpoint(); |
329 | 0 | if (p->mh_tag != MEMTAG) { |
330 | 0 | Mem_Tag_Err(p); |
331 | 0 | goto error; |
332 | 0 | } |
333 | 0 | p->mh_tag = ~MEMTAG; |
334 | 0 | xmlMutexLock(xmlMemMutex); |
335 | 0 | debugMemSize -= p->mh_size; |
336 | 0 | debugMemBlocks--; |
337 | | #ifdef DEBUG_MEMORY |
338 | | oldsize = p->mh_size; |
339 | | #endif |
340 | | #ifdef MEM_LIST |
341 | | debugmem_list_delete(p); |
342 | | #endif |
343 | 0 | xmlMutexUnlock(xmlMemMutex); |
344 | |
|
345 | 0 | if (size > (MAX_SIZE_T - RESERVE_SIZE)) { |
346 | 0 | xmlGenericError(xmlGenericErrorContext, |
347 | 0 | "xmlReallocLoc : Unsigned overflow\n"); |
348 | 0 | xmlMemoryDump(); |
349 | 0 | return(NULL); |
350 | 0 | } |
351 | | |
352 | 0 | tmp = (MEMHDR *) realloc(p,RESERVE_SIZE+size); |
353 | 0 | if (!tmp) { |
354 | 0 | free(p); |
355 | 0 | goto error; |
356 | 0 | } |
357 | 0 | p = tmp; |
358 | 0 | if (xmlMemTraceBlockAt == ptr) { |
359 | 0 | xmlGenericError(xmlGenericErrorContext, |
360 | 0 | "%p : Realloced(%lu -> %lu) Ok\n", |
361 | 0 | xmlMemTraceBlockAt, (long unsigned)p->mh_size, |
362 | 0 | (long unsigned)size); |
363 | 0 | xmlMallocBreakpoint(); |
364 | 0 | } |
365 | 0 | p->mh_tag = MEMTAG; |
366 | 0 | p->mh_number = number; |
367 | 0 | p->mh_type = REALLOC_TYPE; |
368 | 0 | p->mh_size = size; |
369 | 0 | p->mh_file = file; |
370 | 0 | p->mh_line = line; |
371 | 0 | xmlMutexLock(xmlMemMutex); |
372 | 0 | debugMemSize += size; |
373 | 0 | debugMemBlocks++; |
374 | 0 | if (debugMemSize > debugMaxMemSize) debugMaxMemSize = debugMemSize; |
375 | | #ifdef MEM_LIST |
376 | | debugmem_list_add(p); |
377 | | #endif |
378 | 0 | xmlMutexUnlock(xmlMemMutex); |
379 | | |
380 | | TEST_POINT |
381 | |
|
382 | | #ifdef DEBUG_MEMORY |
383 | | xmlGenericError(xmlGenericErrorContext, |
384 | | "Realloced(%d to %d) Ok\n", oldsize, size); |
385 | | #endif |
386 | 0 | return(HDR_2_CLIENT(p)); |
387 | | |
388 | 0 | error: |
389 | 0 | return(NULL); |
390 | 0 | } |
391 | | |
392 | | /** |
393 | | * xmlMemRealloc: |
394 | | * @ptr: the initial memory block pointer |
395 | | * @size: an int specifying the size in byte to allocate. |
396 | | * |
397 | | * a realloc() equivalent, with logging of the allocation info. |
398 | | * |
399 | | * Returns a pointer to the allocated area or NULL in case of lack of memory. |
400 | | */ |
401 | | |
402 | | void * |
403 | 0 | xmlMemRealloc(void *ptr,size_t size) { |
404 | 0 | return(xmlReallocLoc(ptr, size, "none", 0)); |
405 | 0 | } |
406 | | |
407 | | /** |
408 | | * xmlMemFree: |
409 | | * @ptr: the memory block pointer |
410 | | * |
411 | | * a free() equivalent, with error checking. |
412 | | */ |
413 | | void |
414 | | xmlMemFree(void *ptr) |
415 | 0 | { |
416 | 0 | MEMHDR *p; |
417 | 0 | char *target; |
418 | | #ifdef DEBUG_MEMORY |
419 | | size_t size; |
420 | | #endif |
421 | |
|
422 | 0 | if (ptr == NULL) |
423 | 0 | return; |
424 | | |
425 | 0 | if (ptr == (void *) -1) { |
426 | 0 | xmlGenericError(xmlGenericErrorContext, |
427 | 0 | "trying to free pointer from freed area\n"); |
428 | 0 | goto error; |
429 | 0 | } |
430 | | |
431 | 0 | if (xmlMemTraceBlockAt == ptr) { |
432 | 0 | xmlGenericError(xmlGenericErrorContext, |
433 | 0 | "%p : Freed()\n", xmlMemTraceBlockAt); |
434 | 0 | xmlMallocBreakpoint(); |
435 | 0 | } |
436 | | |
437 | | TEST_POINT |
438 | |
|
439 | 0 | target = (char *) ptr; |
440 | |
|
441 | 0 | p = CLIENT_2_HDR(ptr); |
442 | 0 | if (p->mh_tag != MEMTAG) { |
443 | 0 | Mem_Tag_Err(p); |
444 | 0 | goto error; |
445 | 0 | } |
446 | 0 | if (xmlMemStopAtBlock == p->mh_number) xmlMallocBreakpoint(); |
447 | 0 | p->mh_tag = ~MEMTAG; |
448 | 0 | memset(target, -1, p->mh_size); |
449 | 0 | xmlMutexLock(xmlMemMutex); |
450 | 0 | debugMemSize -= p->mh_size; |
451 | 0 | debugMemBlocks--; |
452 | | #ifdef DEBUG_MEMORY |
453 | | size = p->mh_size; |
454 | | #endif |
455 | | #ifdef MEM_LIST |
456 | | debugmem_list_delete(p); |
457 | | #endif |
458 | 0 | xmlMutexUnlock(xmlMemMutex); |
459 | |
|
460 | 0 | free(p); |
461 | | |
462 | | TEST_POINT |
463 | |
|
464 | | #ifdef DEBUG_MEMORY |
465 | | xmlGenericError(xmlGenericErrorContext, |
466 | | "Freed(%d) Ok\n", size); |
467 | | #endif |
468 | |
|
469 | 0 | return; |
470 | | |
471 | 0 | error: |
472 | 0 | xmlGenericError(xmlGenericErrorContext, |
473 | 0 | "xmlMemFree(%p) error\n", ptr); |
474 | 0 | xmlMallocBreakpoint(); |
475 | 0 | return; |
476 | 0 | } |
477 | | |
478 | | /** |
479 | | * xmlMemStrdupLoc: |
480 | | * @str: the initial string pointer |
481 | | * @file: the file name or NULL |
482 | | * @line: the line number |
483 | | * |
484 | | * a strdup() equivalent, with logging of the allocation info. |
485 | | * |
486 | | * Returns a pointer to the new string or NULL if allocation error occurred. |
487 | | */ |
488 | | |
489 | | char * |
490 | | xmlMemStrdupLoc(const char *str, const char *file, int line) |
491 | 0 | { |
492 | 0 | char *s; |
493 | 0 | size_t size = strlen(str) + 1; |
494 | 0 | MEMHDR *p; |
495 | |
|
496 | 0 | if (!xmlMemInitialized) xmlInitMemory(); |
497 | 0 | TEST_POINT |
498 | |
|
499 | 0 | if (size > (MAX_SIZE_T - RESERVE_SIZE)) { |
500 | 0 | xmlGenericError(xmlGenericErrorContext, |
501 | 0 | "xmlMemStrdupLoc : Unsigned overflow\n"); |
502 | 0 | xmlMemoryDump(); |
503 | 0 | return(NULL); |
504 | 0 | } |
505 | | |
506 | 0 | p = (MEMHDR *) malloc(RESERVE_SIZE+size); |
507 | 0 | if (!p) { |
508 | 0 | goto error; |
509 | 0 | } |
510 | 0 | p->mh_tag = MEMTAG; |
511 | 0 | p->mh_size = size; |
512 | 0 | p->mh_type = STRDUP_TYPE; |
513 | 0 | p->mh_file = file; |
514 | 0 | p->mh_line = line; |
515 | 0 | xmlMutexLock(xmlMemMutex); |
516 | 0 | p->mh_number = ++block; |
517 | 0 | debugMemSize += size; |
518 | 0 | debugMemBlocks++; |
519 | 0 | if (debugMemSize > debugMaxMemSize) debugMaxMemSize = debugMemSize; |
520 | | #ifdef MEM_LIST |
521 | | debugmem_list_add(p); |
522 | | #endif |
523 | 0 | xmlMutexUnlock(xmlMemMutex); |
524 | |
|
525 | 0 | s = (char *) HDR_2_CLIENT(p); |
526 | |
|
527 | 0 | if (xmlMemStopAtBlock == p->mh_number) xmlMallocBreakpoint(); |
528 | |
|
529 | 0 | strcpy(s,str); |
530 | | |
531 | | TEST_POINT |
532 | |
|
533 | 0 | if (xmlMemTraceBlockAt == s) { |
534 | 0 | xmlGenericError(xmlGenericErrorContext, |
535 | 0 | "%p : Strdup() Ok\n", xmlMemTraceBlockAt); |
536 | 0 | xmlMallocBreakpoint(); |
537 | 0 | } |
538 | |
|
539 | 0 | return(s); |
540 | | |
541 | 0 | error: |
542 | 0 | return(NULL); |
543 | 0 | } |
544 | | |
545 | | /** |
546 | | * xmlMemoryStrdup: |
547 | | * @str: the initial string pointer |
548 | | * |
549 | | * a strdup() equivalent, with logging of the allocation info. |
550 | | * |
551 | | * Returns a pointer to the new string or NULL if allocation error occurred. |
552 | | */ |
553 | | |
554 | | char * |
555 | 0 | xmlMemoryStrdup(const char *str) { |
556 | 0 | return(xmlMemStrdupLoc(str, "none", 0)); |
557 | 0 | } |
558 | | |
559 | | /** |
560 | | * xmlMemUsed: |
561 | | * |
562 | | * Provides the amount of memory currently allocated |
563 | | * |
564 | | * Returns an int representing the amount of memory allocated. |
565 | | */ |
566 | | |
567 | | int |
568 | 0 | xmlMemUsed(void) { |
569 | 0 | int res; |
570 | |
|
571 | 0 | xmlMutexLock(xmlMemMutex); |
572 | 0 | res = debugMemSize; |
573 | 0 | xmlMutexUnlock(xmlMemMutex); |
574 | 0 | return(res); |
575 | 0 | } |
576 | | |
577 | | /** |
578 | | * xmlMemBlocks: |
579 | | * |
580 | | * Provides the number of memory areas currently allocated |
581 | | * |
582 | | * Returns an int representing the number of blocks |
583 | | */ |
584 | | |
585 | | int |
586 | 0 | xmlMemBlocks(void) { |
587 | 0 | int res; |
588 | |
|
589 | 0 | xmlMutexLock(xmlMemMutex); |
590 | 0 | res = debugMemBlocks; |
591 | 0 | xmlMutexUnlock(xmlMemMutex); |
592 | 0 | return(res); |
593 | 0 | } |
594 | | |
595 | | #ifdef MEM_LIST |
596 | | /** |
597 | | * xmlMemContentShow: |
598 | | * @fp: a FILE descriptor used as the output file |
599 | | * @p: a memory block header |
600 | | * |
601 | | * tries to show some content from the memory block |
602 | | */ |
603 | | |
604 | | static void |
605 | | xmlMemContentShow(FILE *fp, MEMHDR *p) |
606 | | { |
607 | | int i,j,k,len; |
608 | | const char *buf; |
609 | | |
610 | | if (p == NULL) { |
611 | | fprintf(fp, " NULL"); |
612 | | return; |
613 | | } |
614 | | len = p->mh_size; |
615 | | buf = (const char *) HDR_2_CLIENT(p); |
616 | | |
617 | | for (i = 0;i < len;i++) { |
618 | | if (buf[i] == 0) break; |
619 | | if (!isprint((unsigned char) buf[i])) break; |
620 | | } |
621 | | if ((i < 4) && ((buf[i] != 0) || (i == 0))) { |
622 | | if (len >= 4) { |
623 | | MEMHDR *q; |
624 | | void *cur; |
625 | | |
626 | | for (j = 0;(j < len -3) && (j < 40);j += 4) { |
627 | | cur = *((void **) &buf[j]); |
628 | | q = CLIENT_2_HDR(cur); |
629 | | p = memlist; |
630 | | k = 0; |
631 | | while (p != NULL) { |
632 | | if (p == q) break; |
633 | | p = p->mh_next; |
634 | | if (k++ > 100) break; |
635 | | } |
636 | | if ((p != NULL) && (p == q)) { |
637 | | fprintf(fp, " pointer to #%lu at index %d", |
638 | | p->mh_number, j); |
639 | | return; |
640 | | } |
641 | | } |
642 | | } |
643 | | } else if ((i == 0) && (buf[i] == 0)) { |
644 | | fprintf(fp," null"); |
645 | | } else { |
646 | | if (buf[i] == 0) fprintf(fp," \"%.25s\"", buf); |
647 | | else { |
648 | | fprintf(fp," ["); |
649 | | for (j = 0;j < i;j++) |
650 | | fprintf(fp,"%c", buf[j]); |
651 | | fprintf(fp,"]"); |
652 | | } |
653 | | } |
654 | | } |
655 | | #endif |
656 | | |
657 | | /** |
658 | | * xmlMemDisplayLast: |
659 | | * @fp: a FILE descriptor used as the output file, if NULL, the result is |
660 | | * written to the file .memorylist |
661 | | * @nbBytes: the amount of memory to dump |
662 | | * |
663 | | * the last nbBytes of memory allocated and not freed, useful for dumping |
664 | | * the memory left allocated between two places at runtime. |
665 | | */ |
666 | | |
667 | | void |
668 | | xmlMemDisplayLast(FILE *fp, long nbBytes) |
669 | 0 | { |
670 | | #ifdef MEM_LIST |
671 | | MEMHDR *p; |
672 | | unsigned idx; |
673 | | int nb = 0; |
674 | | #endif |
675 | 0 | FILE *old_fp = fp; |
676 | |
|
677 | 0 | if (nbBytes <= 0) |
678 | 0 | return; |
679 | | |
680 | 0 | if (fp == NULL) { |
681 | 0 | fp = fopen(".memorylist", "w"); |
682 | 0 | if (fp == NULL) |
683 | 0 | return; |
684 | 0 | } |
685 | | |
686 | | #ifdef MEM_LIST |
687 | | fprintf(fp," Last %li MEMORY ALLOCATED : %lu, MAX was %lu\n", |
688 | | nbBytes, debugMemSize, debugMaxMemSize); |
689 | | fprintf(fp,"BLOCK NUMBER SIZE TYPE\n"); |
690 | | idx = 0; |
691 | | xmlMutexLock(xmlMemMutex); |
692 | | p = memlist; |
693 | | while ((p) && (nbBytes > 0)) { |
694 | | fprintf(fp,"%-5u %6lu %6lu ",idx++,p->mh_number, |
695 | | (unsigned long)p->mh_size); |
696 | | switch (p->mh_type) { |
697 | | case STRDUP_TYPE:fprintf(fp,"strdup() in ");break; |
698 | | case MALLOC_TYPE:fprintf(fp,"malloc() in ");break; |
699 | | case REALLOC_TYPE:fprintf(fp,"realloc() in ");break; |
700 | | case MALLOC_ATOMIC_TYPE:fprintf(fp,"atomicmalloc() in ");break; |
701 | | case REALLOC_ATOMIC_TYPE:fprintf(fp,"atomicrealloc() in ");break; |
702 | | default: |
703 | | fprintf(fp,"Unknown memory block, may be corrupted"); |
704 | | xmlMutexUnlock(xmlMemMutex); |
705 | | if (old_fp == NULL) |
706 | | fclose(fp); |
707 | | return; |
708 | | } |
709 | | if (p->mh_file != NULL) fprintf(fp,"%s(%u)", p->mh_file, p->mh_line); |
710 | | if (p->mh_tag != MEMTAG) |
711 | | fprintf(fp," INVALID"); |
712 | | nb++; |
713 | | if (nb < 100) |
714 | | xmlMemContentShow(fp, p); |
715 | | else |
716 | | fprintf(fp," skip"); |
717 | | |
718 | | fprintf(fp,"\n"); |
719 | | nbBytes -= (unsigned long)p->mh_size; |
720 | | p = p->mh_next; |
721 | | } |
722 | | xmlMutexUnlock(xmlMemMutex); |
723 | | #else |
724 | 0 | fprintf(fp,"Memory list not compiled (MEM_LIST not defined !)\n"); |
725 | 0 | #endif |
726 | 0 | if (old_fp == NULL) |
727 | 0 | fclose(fp); |
728 | 0 | } |
729 | | |
730 | | /** |
731 | | * xmlMemDisplay: |
732 | | * @fp: a FILE descriptor used as the output file, if NULL, the result is |
733 | | * written to the file .memorylist |
734 | | * |
735 | | * show in-extenso the memory blocks allocated |
736 | | */ |
737 | | |
738 | | void |
739 | | xmlMemDisplay(FILE *fp) |
740 | 0 | { |
741 | | #ifdef MEM_LIST |
742 | | MEMHDR *p; |
743 | | unsigned idx; |
744 | | int nb = 0; |
745 | | time_t currentTime; |
746 | | char buf[500]; |
747 | | struct tm * tstruct; |
748 | | #endif |
749 | 0 | FILE *old_fp = fp; |
750 | |
|
751 | 0 | if (fp == NULL) { |
752 | 0 | fp = fopen(".memorylist", "w"); |
753 | 0 | if (fp == NULL) |
754 | 0 | return; |
755 | 0 | } |
756 | | |
757 | | #ifdef MEM_LIST |
758 | | currentTime = time(NULL); |
759 | | tstruct = localtime(¤tTime); |
760 | | strftime(buf, sizeof(buf) - 1, "%I:%M:%S %p", tstruct); |
761 | | fprintf(fp," %s\n\n", buf); |
762 | | |
763 | | |
764 | | fprintf(fp," MEMORY ALLOCATED : %lu, MAX was %lu\n", |
765 | | debugMemSize, debugMaxMemSize); |
766 | | fprintf(fp,"BLOCK NUMBER SIZE TYPE\n"); |
767 | | idx = 0; |
768 | | xmlMutexLock(xmlMemMutex); |
769 | | p = memlist; |
770 | | while (p) { |
771 | | fprintf(fp,"%-5u %6lu %6lu ",idx++,p->mh_number, |
772 | | (unsigned long)p->mh_size); |
773 | | switch (p->mh_type) { |
774 | | case STRDUP_TYPE:fprintf(fp,"strdup() in ");break; |
775 | | case MALLOC_TYPE:fprintf(fp,"malloc() in ");break; |
776 | | case REALLOC_TYPE:fprintf(fp,"realloc() in ");break; |
777 | | case MALLOC_ATOMIC_TYPE:fprintf(fp,"atomicmalloc() in ");break; |
778 | | case REALLOC_ATOMIC_TYPE:fprintf(fp,"atomicrealloc() in ");break; |
779 | | default: |
780 | | fprintf(fp,"Unknown memory block, may be corrupted"); |
781 | | xmlMutexUnlock(xmlMemMutex); |
782 | | if (old_fp == NULL) |
783 | | fclose(fp); |
784 | | return; |
785 | | } |
786 | | if (p->mh_file != NULL) fprintf(fp,"%s(%u)", p->mh_file, p->mh_line); |
787 | | if (p->mh_tag != MEMTAG) |
788 | | fprintf(fp," INVALID"); |
789 | | nb++; |
790 | | if (nb < 100) |
791 | | xmlMemContentShow(fp, p); |
792 | | else |
793 | | fprintf(fp," skip"); |
794 | | |
795 | | fprintf(fp,"\n"); |
796 | | p = p->mh_next; |
797 | | } |
798 | | xmlMutexUnlock(xmlMemMutex); |
799 | | #else |
800 | 0 | fprintf(fp,"Memory list not compiled (MEM_LIST not defined !)\n"); |
801 | 0 | #endif |
802 | 0 | if (old_fp == NULL) |
803 | 0 | fclose(fp); |
804 | 0 | } |
805 | | |
806 | | #ifdef MEM_LIST |
807 | | |
808 | | static void debugmem_list_add(MEMHDR *p) |
809 | | { |
810 | | p->mh_next = memlist; |
811 | | p->mh_prev = NULL; |
812 | | if (memlist) memlist->mh_prev = p; |
813 | | memlist = p; |
814 | | #ifdef MEM_LIST_DEBUG |
815 | | if (stderr) |
816 | | Mem_Display(stderr); |
817 | | #endif |
818 | | } |
819 | | |
820 | | static void debugmem_list_delete(MEMHDR *p) |
821 | | { |
822 | | if (p->mh_next) |
823 | | p->mh_next->mh_prev = p->mh_prev; |
824 | | if (p->mh_prev) |
825 | | p->mh_prev->mh_next = p->mh_next; |
826 | | else memlist = p->mh_next; |
827 | | #ifdef MEM_LIST_DEBUG |
828 | | if (stderr) |
829 | | Mem_Display(stderr); |
830 | | #endif |
831 | | } |
832 | | |
833 | | #endif |
834 | | |
835 | | /* |
836 | | * debugmem_tag_error: |
837 | | * |
838 | | * internal error function. |
839 | | */ |
840 | | |
841 | | static void debugmem_tag_error(void *p) |
842 | 0 | { |
843 | 0 | xmlGenericError(xmlGenericErrorContext, |
844 | 0 | "Memory tag error occurs :%p \n\t bye\n", p); |
845 | | #ifdef MEM_LIST |
846 | | if (stderr) |
847 | | xmlMemDisplay(stderr); |
848 | | #endif |
849 | 0 | } |
850 | | |
851 | | #ifdef MEM_LIST |
852 | | static FILE *xmlMemoryDumpFile = NULL; |
853 | | #endif |
854 | | |
855 | | /** |
856 | | * xmlMemShow: |
857 | | * @fp: a FILE descriptor used as the output file |
858 | | * @nr: number of entries to dump |
859 | | * |
860 | | * show a show display of the memory allocated, and dump |
861 | | * the @nr last allocated areas which were not freed |
862 | | */ |
863 | | |
864 | | void |
865 | | xmlMemShow(FILE *fp, int nr ATTRIBUTE_UNUSED) |
866 | 0 | { |
867 | | #ifdef MEM_LIST |
868 | | MEMHDR *p; |
869 | | #endif |
870 | |
|
871 | 0 | if (fp != NULL) |
872 | 0 | fprintf(fp," MEMORY ALLOCATED : %lu, MAX was %lu\n", |
873 | 0 | debugMemSize, debugMaxMemSize); |
874 | | #ifdef MEM_LIST |
875 | | xmlMutexLock(xmlMemMutex); |
876 | | if (nr > 0) { |
877 | | fprintf(fp,"NUMBER SIZE TYPE WHERE\n"); |
878 | | p = memlist; |
879 | | while ((p) && nr > 0) { |
880 | | fprintf(fp,"%6lu %6lu ",p->mh_number,(unsigned long)p->mh_size); |
881 | | switch (p->mh_type) { |
882 | | case STRDUP_TYPE:fprintf(fp,"strdup() in ");break; |
883 | | case MALLOC_TYPE:fprintf(fp,"malloc() in ");break; |
884 | | case MALLOC_ATOMIC_TYPE:fprintf(fp,"atomicmalloc() in ");break; |
885 | | case REALLOC_TYPE:fprintf(fp,"realloc() in ");break; |
886 | | case REALLOC_ATOMIC_TYPE:fprintf(fp,"atomicrealloc() in ");break; |
887 | | default:fprintf(fp," ??? in ");break; |
888 | | } |
889 | | if (p->mh_file != NULL) |
890 | | fprintf(fp,"%s(%u)", p->mh_file, p->mh_line); |
891 | | if (p->mh_tag != MEMTAG) |
892 | | fprintf(fp," INVALID"); |
893 | | xmlMemContentShow(fp, p); |
894 | | fprintf(fp,"\n"); |
895 | | nr--; |
896 | | p = p->mh_next; |
897 | | } |
898 | | } |
899 | | xmlMutexUnlock(xmlMemMutex); |
900 | | #endif /* MEM_LIST */ |
901 | 0 | } |
902 | | |
903 | | /** |
904 | | * xmlMemoryDump: |
905 | | * |
906 | | * Dump in-extenso the memory blocks allocated to the file .memorylist |
907 | | */ |
908 | | |
909 | | void |
910 | | xmlMemoryDump(void) |
911 | 0 | { |
912 | | #ifdef MEM_LIST |
913 | | FILE *dump; |
914 | | |
915 | | if (debugMaxMemSize == 0) |
916 | | return; |
917 | | dump = fopen(".memdump", "w"); |
918 | | if (dump == NULL) |
919 | | xmlMemoryDumpFile = stderr; |
920 | | else xmlMemoryDumpFile = dump; |
921 | | |
922 | | xmlMemDisplay(xmlMemoryDumpFile); |
923 | | |
924 | | if (dump != NULL) fclose(dump); |
925 | | #endif /* MEM_LIST */ |
926 | 0 | } |
927 | | |
928 | | |
929 | | /**************************************************************** |
930 | | * * |
931 | | * Initialization Routines * |
932 | | * * |
933 | | ****************************************************************/ |
934 | | |
935 | | /** |
936 | | * xmlInitMemory: |
937 | | * |
938 | | * DEPRECATED: This function will be made private. Call xmlInitParser to |
939 | | * initialize the library. |
940 | | * |
941 | | * Initialize the memory layer. |
942 | | * |
943 | | * Returns 0 on success |
944 | | */ |
945 | | int |
946 | | xmlInitMemory(void) |
947 | 1 | { |
948 | 1 | char *breakpoint; |
949 | | #ifdef DEBUG_MEMORY |
950 | | xmlGenericError(xmlGenericErrorContext, |
951 | | "xmlInitMemory()\n"); |
952 | | #endif |
953 | | /* |
954 | | This is really not good code (see Bug 130419). Suggestions for |
955 | | improvement will be welcome! |
956 | | */ |
957 | 1 | if (xmlMemInitialized) return(-1); |
958 | 1 | xmlMemInitialized = 1; |
959 | 1 | xmlMemMutex = xmlNewMutex(); |
960 | | |
961 | 1 | breakpoint = getenv("XML_MEM_BREAKPOINT"); |
962 | 1 | if (breakpoint != NULL) { |
963 | 0 | sscanf(breakpoint, "%ud", &xmlMemStopAtBlock); |
964 | 0 | } |
965 | 1 | breakpoint = getenv("XML_MEM_TRACE"); |
966 | 1 | if (breakpoint != NULL) { |
967 | 0 | sscanf(breakpoint, "%p", &xmlMemTraceBlockAt); |
968 | 0 | } |
969 | | |
970 | | #ifdef DEBUG_MEMORY |
971 | | xmlGenericError(xmlGenericErrorContext, |
972 | | "xmlInitMemory() Ok\n"); |
973 | | #endif |
974 | 1 | return(0); |
975 | 1 | } |
976 | | |
977 | | /** |
978 | | * xmlCleanupMemory: |
979 | | * |
980 | | * DEPRECATED: This function will be made private. Call xmlCleanupParser |
981 | | * to free global state but see the warnings there. xmlCleanupParser |
982 | | * should be only called once at program exit. In most cases, you don't |
983 | | * have call cleanup functions at all. |
984 | | * |
985 | | * Free up all the memory allocated by the library for its own |
986 | | * use. This should not be called by user level code. |
987 | | */ |
988 | | void |
989 | 0 | xmlCleanupMemory(void) { |
990 | | #ifdef DEBUG_MEMORY |
991 | | xmlGenericError(xmlGenericErrorContext, |
992 | | "xmlCleanupMemory()\n"); |
993 | | #endif |
994 | 0 | if (xmlMemInitialized == 0) |
995 | 0 | return; |
996 | | |
997 | 0 | xmlFreeMutex(xmlMemMutex); |
998 | 0 | xmlMemMutex = NULL; |
999 | 0 | xmlMemInitialized = 0; |
1000 | | #ifdef DEBUG_MEMORY |
1001 | | xmlGenericError(xmlGenericErrorContext, |
1002 | | "xmlCleanupMemory() Ok\n"); |
1003 | | #endif |
1004 | 0 | } |
1005 | | |
1006 | | /** |
1007 | | * xmlMemSetup: |
1008 | | * @freeFunc: the free() function to use |
1009 | | * @mallocFunc: the malloc() function to use |
1010 | | * @reallocFunc: the realloc() function to use |
1011 | | * @strdupFunc: the strdup() function to use |
1012 | | * |
1013 | | * Override the default memory access functions with a new set |
1014 | | * This has to be called before any other libxml routines ! |
1015 | | * |
1016 | | * Should this be blocked if there was already some allocations |
1017 | | * done ? |
1018 | | * |
1019 | | * Returns 0 on success |
1020 | | */ |
1021 | | int |
1022 | | xmlMemSetup(xmlFreeFunc freeFunc, xmlMallocFunc mallocFunc, |
1023 | 0 | xmlReallocFunc reallocFunc, xmlStrdupFunc strdupFunc) { |
1024 | | #ifdef DEBUG_MEMORY |
1025 | | xmlGenericError(xmlGenericErrorContext, |
1026 | | "xmlMemSetup()\n"); |
1027 | | #endif |
1028 | 0 | if (freeFunc == NULL) |
1029 | 0 | return(-1); |
1030 | 0 | if (mallocFunc == NULL) |
1031 | 0 | return(-1); |
1032 | 0 | if (reallocFunc == NULL) |
1033 | 0 | return(-1); |
1034 | 0 | if (strdupFunc == NULL) |
1035 | 0 | return(-1); |
1036 | 0 | xmlFree = freeFunc; |
1037 | 0 | xmlMalloc = mallocFunc; |
1038 | 0 | xmlMallocAtomic = mallocFunc; |
1039 | 0 | xmlRealloc = reallocFunc; |
1040 | 0 | xmlMemStrdup = strdupFunc; |
1041 | | #ifdef DEBUG_MEMORY |
1042 | | xmlGenericError(xmlGenericErrorContext, |
1043 | | "xmlMemSetup() Ok\n"); |
1044 | | #endif |
1045 | 0 | return(0); |
1046 | 0 | } |
1047 | | |
1048 | | /** |
1049 | | * xmlMemGet: |
1050 | | * @freeFunc: place to save the free() function in use |
1051 | | * @mallocFunc: place to save the malloc() function in use |
1052 | | * @reallocFunc: place to save the realloc() function in use |
1053 | | * @strdupFunc: place to save the strdup() function in use |
1054 | | * |
1055 | | * Provides the memory access functions set currently in use |
1056 | | * |
1057 | | * Returns 0 on success |
1058 | | */ |
1059 | | int |
1060 | | xmlMemGet(xmlFreeFunc *freeFunc, xmlMallocFunc *mallocFunc, |
1061 | 0 | xmlReallocFunc *reallocFunc, xmlStrdupFunc *strdupFunc) { |
1062 | 0 | if (freeFunc != NULL) *freeFunc = xmlFree; |
1063 | 0 | if (mallocFunc != NULL) *mallocFunc = xmlMalloc; |
1064 | 0 | if (reallocFunc != NULL) *reallocFunc = xmlRealloc; |
1065 | 0 | if (strdupFunc != NULL) *strdupFunc = xmlMemStrdup; |
1066 | 0 | return(0); |
1067 | 0 | } |
1068 | | |
1069 | | /** |
1070 | | * xmlGcMemSetup: |
1071 | | * @freeFunc: the free() function to use |
1072 | | * @mallocFunc: the malloc() function to use |
1073 | | * @mallocAtomicFunc: the malloc() function to use for atomic allocations |
1074 | | * @reallocFunc: the realloc() function to use |
1075 | | * @strdupFunc: the strdup() function to use |
1076 | | * |
1077 | | * Override the default memory access functions with a new set |
1078 | | * This has to be called before any other libxml routines ! |
1079 | | * The mallocAtomicFunc is specialized for atomic block |
1080 | | * allocations (i.e. of areas useful for garbage collected memory allocators |
1081 | | * |
1082 | | * Should this be blocked if there was already some allocations |
1083 | | * done ? |
1084 | | * |
1085 | | * Returns 0 on success |
1086 | | */ |
1087 | | int |
1088 | | xmlGcMemSetup(xmlFreeFunc freeFunc, xmlMallocFunc mallocFunc, |
1089 | | xmlMallocFunc mallocAtomicFunc, xmlReallocFunc reallocFunc, |
1090 | 0 | xmlStrdupFunc strdupFunc) { |
1091 | | #ifdef DEBUG_MEMORY |
1092 | | xmlGenericError(xmlGenericErrorContext, |
1093 | | "xmlGcMemSetup()\n"); |
1094 | | #endif |
1095 | 0 | if (freeFunc == NULL) |
1096 | 0 | return(-1); |
1097 | 0 | if (mallocFunc == NULL) |
1098 | 0 | return(-1); |
1099 | 0 | if (mallocAtomicFunc == NULL) |
1100 | 0 | return(-1); |
1101 | 0 | if (reallocFunc == NULL) |
1102 | 0 | return(-1); |
1103 | 0 | if (strdupFunc == NULL) |
1104 | 0 | return(-1); |
1105 | 0 | xmlFree = freeFunc; |
1106 | 0 | xmlMalloc = mallocFunc; |
1107 | 0 | xmlMallocAtomic = mallocAtomicFunc; |
1108 | 0 | xmlRealloc = reallocFunc; |
1109 | 0 | xmlMemStrdup = strdupFunc; |
1110 | | #ifdef DEBUG_MEMORY |
1111 | | xmlGenericError(xmlGenericErrorContext, |
1112 | | "xmlGcMemSetup() Ok\n"); |
1113 | | #endif |
1114 | 0 | return(0); |
1115 | 0 | } |
1116 | | |
1117 | | /** |
1118 | | * xmlGcMemGet: |
1119 | | * @freeFunc: place to save the free() function in use |
1120 | | * @mallocFunc: place to save the malloc() function in use |
1121 | | * @mallocAtomicFunc: place to save the atomic malloc() function in use |
1122 | | * @reallocFunc: place to save the realloc() function in use |
1123 | | * @strdupFunc: place to save the strdup() function in use |
1124 | | * |
1125 | | * Provides the memory access functions set currently in use |
1126 | | * The mallocAtomicFunc is specialized for atomic block |
1127 | | * allocations (i.e. of areas useful for garbage collected memory allocators |
1128 | | * |
1129 | | * Returns 0 on success |
1130 | | */ |
1131 | | int |
1132 | | xmlGcMemGet(xmlFreeFunc *freeFunc, xmlMallocFunc *mallocFunc, |
1133 | | xmlMallocFunc *mallocAtomicFunc, xmlReallocFunc *reallocFunc, |
1134 | 0 | xmlStrdupFunc *strdupFunc) { |
1135 | 0 | if (freeFunc != NULL) *freeFunc = xmlFree; |
1136 | 0 | if (mallocFunc != NULL) *mallocFunc = xmlMalloc; |
1137 | 0 | if (mallocAtomicFunc != NULL) *mallocAtomicFunc = xmlMallocAtomic; |
1138 | 0 | if (reallocFunc != NULL) *reallocFunc = xmlRealloc; |
1139 | 0 | if (strdupFunc != NULL) *strdupFunc = xmlMemStrdup; |
1140 | 0 | return(0); |
1141 | 0 | } |
1142 | | |