8 /* FIXME: make allocation dynamic */
11 #ifdef IMAGER_DEBUG_MALLOC
22 static int malloc_need_init = 1;
30 malloc_entry malloc_pointers[MAXMAL];
35 /* Utility functions */
42 for(i=0; i<MAXMAL; i++) malloc_pointers[i].ptr = NULL;
53 if (malloc_pointers[i].ptr == p)
59 /* Takes a pointer to real start of array,
60 * sets the entries in the table, returns
61 * the offset corrected pointer */
65 set_entry(int i, char *buf, size_t size, char *file, int line) {
66 memset( buf, PADBYTE, UNDRRNVAL );
67 memset( &buf[UNDRRNVAL+size], PADBYTE, OVERRNVAL );
69 malloc_pointers[i].ptr = buf;
70 malloc_pointers[i].size = size;
71 sprintf(malloc_pointers[i].comm,"%s (%d)", file, line);
83 mm_log((0,"malloc_state()\n"));
85 for(i=0; i<MAXMAL; i++) if (malloc_pointers[i].ptr != NULL) {
86 mm_log((0,"%d: %d (0x%x) : %s\n", i, malloc_pointers[i].size, malloc_pointers[i].ptr, malloc_pointers[i].comm));
87 total += malloc_pointers[i].size;
89 if (total == 0) mm_log((0,"No memory currently used!\n"))
90 else mm_log((0,"total: %d\n",total));
96 mymalloc_file_line(size_t size, char* file, int line) {
99 if (malloc_need_init) malloc_init();
101 /* bndcheck_all(); Uncomment for LOTS OF THRASHING */
103 if ( (i = find_ptr(NULL)) < 0 ) {
104 mm_log((0,"more than %d segments allocated at %s (%d)\n", MAXMAL, file, line));
108 if ( (buf = malloc(size+UNDRRNVAL+OVERRNVAL)) == NULL ) {
109 mm_log((1,"Unable to allocate %i for %s (%i)\n", size, file, line));
113 buf = set_entry(i, buf, size, file, line);
114 mm_log((1,"mymalloc_file_line: slot <%d> %d bytes allocated at %p for %s (%d)\n", i, size, buf, file, line));
119 myrealloc_file_line(void *ptr, size_t newsize, char* file, int line) {
123 if (malloc_need_init) malloc_init();
124 /* bndcheck_all(); ACTIVATE FOR LOTS OF THRASHING */
127 mm_log((1, "realloc called with ptr = NULL, sending request to malloc\n"));
128 return mymalloc_file_line(newsize, file, line);
132 mm_log((1, "newsize = 0, sending request to free\n"));
133 myfree_file_line(ptr, file, line);
137 if ( (i = find_ptr(ptr)) == -1) {
138 mm_log((0, "Unable to find %p in realloc for %s (%i)\n", ptr, file, line));
142 if ( (buf = realloc(((char *)ptr)-UNDRRNVAL, UNDRRNVAL+OVERRNVAL+newsize)) == NULL ) {
143 mm_log((1,"Unable to reallocate %i bytes at %p for %s (%i)\n", newsize, ptr, file, line));
147 buf = set_entry(i, buf, newsize, file, line);
148 mm_log((1,"realloc_file_line: slot <%d> %d bytes allocated at %p for %s (%d)\n", i, newsize, buf, file, line));
156 size_t s = malloc_pointers[idx].size;
157 unsigned char *pp = malloc_pointers[idx].ptr;
159 mm_log((1, "bndcheck: No pointer in slot %d\n", idx));
163 for(i=0;i<UNDRRNVAL;i++)
164 if (pp[-(1+i)] != PADBYTE)
165 mm_log((1,"bndcheck: UNDERRUN OF %d bytes detected: slot = %d, point = %p, size = %d\n", i+1, idx, pp, s ));
167 for(i=0;i<OVERRNVAL;i++)
168 if (pp[s+i] != PADBYTE)
169 mm_log((1,"bndcheck: OVERRUN OF %d bytes detected: slot = %d, point = %p, size = %d\n", i+1, idx, pp, s ));
175 mm_log((1, "bndcheck_all()\n"));
176 for(idx=0; idx<MAXMAL; idx++)
177 if (malloc_pointers[idx].ptr)
186 myfree_file_line(void *p, char *file, int line) {
191 for(i=0; i<MAXMAL; i++) if (malloc_pointers[i].ptr == p) {
192 mm_log((1,"myfree_file_line: pointer %i (%s) freed at %s (%i)\n", i, malloc_pointers[i].comm, file, line));
194 malloc_pointers[i].ptr = NULL;
198 mm_log((1, "myfree_file_line: freeing address %p (real %p)\n", pp, pp-UNDRRNVAL));
201 mm_log((1, "myfree_file_line: INCONSISTENT REFCOUNT %d at %s (%i)\n", match, file, line));
202 fprintf(stderr, "myfree_file_line: INCONSISTENT REFCOUNT %d at %s (%i)\n", match, file, line);
212 #define malloc_comm(a,b) (mymalloc(a))
216 printf("malloc_state: not in debug mode\n");
224 fprintf(stderr, "Attempt to allocate size %d\n", size);
228 if ( (buf = malloc(size)) == NULL ) {
229 mm_log((1, "mymalloc: unable to malloc %d\n", size));
230 fprintf(stderr,"Unable to malloc %d.\n", size); exit(3);
232 mm_log((1, "mymalloc(size %d) -> %p\n", size, buf));
238 mm_log((1, "myfree(p %p)\n", p));
243 myrealloc(void *block, size_t size) {
246 mm_log((1, "myrealloc(block %p, size %u)\n", block, size));
247 if ((result = realloc(block, size)) == NULL) {
248 mm_log((1, "myrealloc: out of memory\n"));
249 fprintf(stderr, "Out of memory.\n");
255 #endif /* IMAGER_MALLOC_DEBUG */
260 /* memory pool implementation */
263 i_mempool_init(i_mempool *mp) {
266 mp->p = mymalloc(sizeof(void*)*mp->alloc);
270 i_mempool_extend(i_mempool *mp) {
271 mp->p = myrealloc(mp->p, mp->alloc * 2);
276 i_mempool_alloc(i_mempool *mp, size_t size) {
277 if (mp->used == mp->alloc) i_mempool_extend(mp);
278 mp->p[mp->used] = mymalloc(size);
280 return mp->p[mp->used-1];
285 i_mempool_destroy(i_mempool *mp) {
287 for(i=0; i<mp->used; i++) myfree(mp->p[i]);
293 /* Should these really be here? */
300 if (a<b) return a; else return b;
305 if (a>b) return a; else return b;
314 struct utf8_size utf8_sizes[] =
323 =item utf8_advance(char **p, int *len)
325 Retreive a UTF8 character from the stream.
327 Modifies *p and *len to indicate the consumed characters.
329 This doesn't support the extended UTF8 encoding used by later versions
335 unsigned long i_utf8_advance(char const **p, int *len) {
338 unsigned char codes[3];
343 for (i = 0; i < sizeof(utf8_sizes)/sizeof(*utf8_sizes); ++i) {
344 if ((c & utf8_sizes[i].mask) == utf8_sizes[i].expect) {
345 clen = utf8_sizes[i].size;
348 if (clen == 0 || *len < clen-1) {
353 /* check that each character is well formed */
357 if (((*p)[ci] & 0xC0) != 0x80) {
361 codes[ci] = (*p)[ci];
364 *p += clen-1; *len -= clen-1;
366 if ((c & 0xE0) == 0xC0) {
367 return ((c & 0x1F) << 6) + (codes[0] & 0x3F);
369 else if ((c & 0xF0) == 0xE0) {
370 return ((c & 0x0F) << 12) | ((codes[0] & 0x3F) << 6) | (codes[1] & 0x3f);
372 else if ((c & 0xF8) == 0xF0) {
373 return ((c & 0x07) << 18) | ((codes[0] & 0x3F) << 12)
374 | ((codes[1] & 0x3F) << 6) | (codes[2] & 0x3F);
377 *p -= clen; *len += clen;