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/* $Id: memory.h,v 1.17 2003/09/28 23:44:32 jonas Exp $ */
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#ifndef EL__UTIL_MEMORY_H
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#define EL__UTIL_MEMORY_H
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/* If defined, we'll crash if ALLOC_MAXTRIES is attained,
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* if not defined, we'll try to continue. */
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/* #define CRASH_IF_ALLOC_MAXTRIES */
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/* Max. number of retry in case of memory allocation failure. */
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#define ALLOC_MAXTRIES 3
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/* Delay in seconds between each alloc try. */
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#define fmem_alloc(x) mem_alloc(x)
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#define fmem_free(x) mem_free(x)
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#include "util/memdebug.h"
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#define mem_alloc(x) debug_mem_alloc(__FILE__, __LINE__, x)
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#define mem_calloc(x, y) debug_mem_calloc(__FILE__, __LINE__, x, y)
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#define mem_free(x) debug_mem_free(__FILE__, __LINE__, x)
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#define mem_realloc(x, y) debug_mem_realloc(__FILE__, __LINE__, x, y)
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/* Cygwin wants some size_t definition here... let's try to make it happy
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#include <sys/types.h>
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void *mem_alloc(size_t);
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void *mem_calloc(size_t, size_t);
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void mem_free(void *);
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void *mem_realloc(void *, size_t);
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/* TODO: For enhanced portability, checks at configure time:
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* realloc(NULL, 0) -> NULL
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* realloc(p, 0) <-> free(p)
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* realloc(NULL, n) <-> malloc(n)
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* Some old implementations may not respect these rules.
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* For these we need some replacement functions.
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* This should not be an issue on most modern systems.
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# define mem_alloc(size) malloc(size)
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# define mem_calloc(count, size) calloc(count, size)
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# define mem_free(p) free(p)
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# define mem_realloc(p, size) realloc(p, size)
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/* fmem_* functions should be use for allocation and freeing of memory
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* See alloca(3) manpage. */
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#define fmem_alloc(x) alloca(x)
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#else /* HAVE_ALLOCA */
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#define fmem_alloc(x) mem_alloc(x)
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#define fmem_free(x) mem_free(x)
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#endif /* HAVE_ALLOCA */
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#endif /* LEAK_DEBUG */
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/* Granular memory allocation. */
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/* The ``old'' style granularity. XXX: Must be power of 2 */
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#define ALLOC_GR 0x100
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#include <string.h> /* for memset() */
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/* The granularity used by the aligned memory functions below must be a mask
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* with all bits set from but not including the most significant bit and down.
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* So if an alignment of 256 is wanted use 0xFF. */
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#define ALIGN_MEMORY_SIZE(x, gr) (((x) + (gr)) & ~(gr))
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unsigned char *file, int line,
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void **ptr, size_t old, size_t new, size_t objsize, int mask)
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size_t newsize = ALIGN_MEMORY_SIZE(new, mask);
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size_t oldsize = ALIGN_MEMORY_SIZE(old, mask);
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if (newsize > oldsize) {
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data = debug_mem_realloc(file, line, *ptr, newsize);
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data = mem_realloc(*ptr, newsize);
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if (!data) return NULL;
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memset(&data[oldsize], 0, newsize - oldsize);
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#define mem_align_alloc(ptr, old, new, objsize, mask) \
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mem_align_alloc__(__FILE__, __LINE__, (void **)ptr, old, new, objsize, mask)
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#define mem_align_alloc(ptr, old, new, objsize, mask) \
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mem_align_alloc__((void **)ptr, old, new, objsize, mask)
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src/util/memory.h
