sendmail/libsm/heap.c

64 **  The behaviour of malloc with size==0 is platform dependent (it
68 **  two choices: "size = 1" or "return NULL". We use the former in the
72 **	use size.
75 #define MALLOC_SIZE(size)	((size) == 0 ? 1 : (size))
81 **		size -- size of requested memory.
96 sm_malloc_x(size)
97 	size_t size;
102 	ptr = malloc(MALLOC_SIZE(size));
115 **		size -- size of requested memory.
122 sm_malloc(size)
123 	size_t size;
128 	ptr = malloc(MALLOC_SIZE(size));
138 **		size -- size of requested memory.
145 sm_realloc(ptr, size)
147 	size_t size;
152 	newptr = realloc(ptr, MALLOC_SIZE(size));
162 **		size -- size of requested memory.
172 sm_realloc_x(ptr, size)
174 	size_t size;
179 	newptr = realloc(ptr, MALLOC_SIZE(size));
351 **		size -- size of requested memory.
361 sm_malloc_tagged(size, tag, num, group)
362 	size_t size;
372 		ptr = malloc(MALLOC_SIZE(size));
380 	    && sm_debug_level(&SmHeapLimit) < SmHeapTotal + size)
383 	ptr = malloc(MALLOC_SIZE(size));
385 	if (ptr != NULL && !sm_heap_register(ptr, size, tag, num, group))
392 	SmHeapTotal += size;
402 **		size -- size of requested memory.
415 sm_malloc_tagged_x(size, tag, num, group)
416 	size_t size;
426 		ptr = malloc(MALLOC_SIZE(size));
435 	    && sm_debug_level(&SmHeapLimit) < SmHeapTotal + size)
440 	ptr = malloc(MALLOC_SIZE(size));
442 	if (ptr != NULL && !sm_heap_register(ptr, size, tag, num, group))
451 	SmHeapTotal += size;
462 **		size -- size of requested memory.
472 sm_heap_register(ptr, size, tag, num, group)
474 	size_t size;
505 	hi->hi_size = size;
518 **		size -- size of requested memory.
525 sm_realloc(ptr, size)
527 	size_t size;
535 		newptr = realloc(ptr, MALLOC_SIZE(size));
541 		return sm_malloc_tagged(size, "realloc", 0, SmHeapGroup);
552 			       < SmHeapTotal - hi->hi_size + size)
557 			newptr = realloc(ptr, MALLOC_SIZE(size));
561 			SmHeapTotal = SmHeapTotal - hi->hi_size + size;
566 			hi->hi_size = size;
583 **		size -- size of requested memory.
593 sm_realloc_x(ptr, size)
595 	size_t size;
603 		newptr = realloc(ptr, MALLOC_SIZE(size));
611 		return sm_malloc_tagged_x(size, "realloc", 0, SmHeapGroup);
621 			       < SmHeapTotal - hi->hi_size + size)
626 			newptr = realloc(ptr, MALLOC_SIZE(size));
630 			SmHeapTotal = SmHeapTotal - hi->hi_size + size;
635 			hi->hi_size = size;