sendmail/libsm/heap.c

62 **  The behaviour of malloc with size==0 is platform dependent (it
66 **  two choices: "size = 1" or "return NULL". We use the former in the
70 **	use size.
73 #define MALLOC_SIZE(size)	((size) == 0 ? 1 : (size))
79 **		size -- size of requested memory.
94 sm_malloc_x(size)
95 	size_t size;
100 	ptr = malloc(MALLOC_SIZE(size));
113 **		size -- size of requested memory.
120 sm_malloc(size)
121 	size_t size;
126 	ptr = malloc(MALLOC_SIZE(size));
136 **		size -- size of requested memory.
143 sm_realloc(ptr, size)
145 	size_t size;
150 	newptr = realloc(ptr, MALLOC_SIZE(size));
160 **		size -- size of requested memory.
170 sm_realloc_x(ptr, size)
172 	size_t size;
177 	newptr = realloc(ptr, MALLOC_SIZE(size));
349 **		size -- size of requested memory.
359 sm_malloc_tagged(size, tag, num, group)
360 	size_t size;
370 		ptr = malloc(MALLOC_SIZE(size));
378 	    && sm_debug_level(&SmHeapLimit) < SmHeapTotal + size)
381 	ptr = malloc(MALLOC_SIZE(size));
383 	if (ptr != NULL && !sm_heap_register(ptr, size, tag, num, group))
390 	SmHeapTotal += size;
400 **		size -- size of requested memory.
413 sm_malloc_tagged_x(size, tag, num, group)
414 	size_t size;
424 		ptr = malloc(MALLOC_SIZE(size));
433 	    && sm_debug_level(&SmHeapLimit) < SmHeapTotal + size)
438 	ptr = malloc(MALLOC_SIZE(size));
440 	if (ptr != NULL && !sm_heap_register(ptr, size, tag, num, group))
449 	SmHeapTotal += size;
460 **		size -- size of requested memory.
470 sm_heap_register(ptr, size, tag, num, group)
472 	size_t size;
503 	hi->hi_size = size;
516 **		size -- size of requested memory.
523 sm_realloc(ptr, size)
525 	size_t size;
533 		newptr = realloc(ptr, MALLOC_SIZE(size));
539 		return sm_malloc_tagged(size, "realloc", 0, SmHeapGroup);
550 			       < SmHeapTotal - hi->hi_size + size)
555 			newptr = realloc(ptr, MALLOC_SIZE(size));
559 			SmHeapTotal = SmHeapTotal - hi->hi_size + size;
564 			hi->hi_size = size;
581 **		size -- size of requested memory.
591 sm_realloc_x(ptr, size)
593 	size_t size;
601 		newptr = realloc(ptr, MALLOC_SIZE(size));
609 		return sm_malloc_tagged_x(size, "realloc", 0, SmHeapGroup);
619 			       < SmHeapTotal - hi->hi_size + size)
624 			newptr = realloc(ptr, MALLOC_SIZE(size));
628 			SmHeapTotal = SmHeapTotal - hi->hi_size + size;
633 			hi->hi_size = size;