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add type-specific allocators

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This commit is contained in:
Josh Coalson
2001-05-13 05:15:47 +00:00
parent d8deb2cd21
commit 02f39006a3
2 changed files with 97 additions and 2 deletions
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8
src/libFLAC/include/private/memory.h
View File

@@ -22,9 +22,15 @@
#include <stdlib.h> /* for size_t */ #include <stdlib.h> /* for size_t */
#include "FLAC/ordinals.h" /* for bool */
/* Returns the unaligned address returned by malloc. /* Returns the unaligned address returned by malloc.
* Use free() on this address to deallocate. * Use free() on this address to deallocate.
*/ */
void *FLAC__memory_alloc(size_t bytes, void **aligned_address); void *FLAC__memory_alloc_aligned(size_t bytes, void **aligned_address);
bool FLAC__memory_alloc_aligned_int32_array(unsigned elements, int32 **unaligned_pointer, int32 **aligned_pointer);
bool FLAC__memory_alloc_aligned_uint32_array(unsigned elements, uint32 **unaligned_pointer, uint32 **aligned_pointer);
bool FLAC__memory_alloc_aligned_unsigned_array(unsigned elements, unsigned **unaligned_pointer, unsigned **aligned_pointer);
bool FLAC__memory_alloc_aligned_real_array(unsigned elements, real **unaligned_pointer, real **aligned_pointer);
#endif #endif

91
src/libFLAC/memory.c
View File

@@ -18,9 +18,10 @@
*/ */
#include <assert.h> #include <assert.h>
#include <stdio.h> /*@@@ for stderr */
#include "private/memory.h" #include "private/memory.h"
void *FLAC__memory_alloc(size_t bytes, void **aligned_address) void *FLAC__memory_alloc_aligned(size_t bytes, void **aligned_address)
{ {
void *x; void *x;
@@ -37,3 +38,91 @@ fprintf(stderr, "FLAC__memory_alloc(unaligned=%p, aligned=%p)\n",x,*aligned_addr
#endif #endif
return x; return x;
} }
bool FLAC__memory_alloc_aligned_int32_array(unsigned elements, int32 **unaligned_pointer, int32 **aligned_pointer)
{
int32 *pa, *pu; /* aligned pointer, unaligned pointer */
assert(elements > 0);
assert(0 != unaligned_pointer);
assert(0 != aligned_pointer);
assert(unaligned_pointer != aligned_pointer);
pu = (int32*)FLAC__memory_alloc_aligned(sizeof(int32) * elements, (void*)&pa);
if(0 == pu) {
return false;
}
else {
if(*unaligned_pointer != 0)
free(*unaligned_pointer);
*unaligned_pointer = pu;
*aligned_pointer = pa;
return true;
}
}
bool FLAC__memory_alloc_aligned_uint32_array(unsigned elements, uint32 **unaligned_pointer, uint32 **aligned_pointer)
{
uint32 *pa, *pu; /* aligned pointer, unaligned pointer */
assert(elements > 0);
assert(0 != unaligned_pointer);
assert(0 != aligned_pointer);
assert(unaligned_pointer != aligned_pointer);
pu = (uint32*)FLAC__memory_alloc_aligned(sizeof(uint32) * elements, (void*)&pa);
if(0 == pu) {
return false;
}
else {
if(*unaligned_pointer != 0)
free(*unaligned_pointer);
*unaligned_pointer = pu;
*aligned_pointer = pa;
return true;
}
}
bool FLAC__memory_alloc_aligned_unsigned_array(unsigned elements, unsigned **unaligned_pointer, unsigned **aligned_pointer)
{
unsigned *pa, *pu; /* aligned pointer, unaligned pointer */
assert(elements > 0);
assert(0 != unaligned_pointer);
assert(0 != aligned_pointer);
assert(unaligned_pointer != aligned_pointer);
pu = (unsigned*)FLAC__memory_alloc_aligned(sizeof(unsigned) * elements, (void*)&pa);
if(0 == pu) {
return false;
}
else {
if(*unaligned_pointer != 0)
free(*unaligned_pointer);
*unaligned_pointer = pu;
*aligned_pointer = pa;
return true;
}
}
bool FLAC__memory_alloc_aligned_real_array(unsigned elements, real **unaligned_pointer, real **aligned_pointer)
{
real *pa, *pu; /* aligned pointer, unaligned pointer */
assert(elements > 0);
assert(0 != unaligned_pointer);
assert(0 != aligned_pointer);
assert(unaligned_pointer != aligned_pointer);
pu = (real*)FLAC__memory_alloc_aligned(sizeof(real) * elements, (void*)&pa);
if(0 == pu) {
return false;
}
else {
if(*unaligned_pointer != 0)
free(*unaligned_pointer);
*unaligned_pointer = pu;
*aligned_pointer = pa;
return true;
}
}