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Merge pull request #15844 from benpicco/sys/oneway-malloc_align

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sys/oneway-malloc: only allocate word-aligned chunks
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benpicco 2021-01-25 14:31:37 +01:00 committed by GitHub
commit 1862a73d41
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1 changed files with 8 additions and 0 deletions
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8
sys/oneway-malloc/oneway-malloc.c
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@ -20,15 +20,23 @@
#include <string.h>
#include "architecture.h"
#include "malloc.h"
#define ENABLE_DEBUG 0
#include "debug.h"
#define ARCHITECTURE_WORD_MASK (ARCHITECTURE_WORD_BYTES - 1)
extern void *sbrk(int incr);
void __attribute__((weak)) *malloc(size_t size)
{
/* ensure we always allocate word-aligned blocks */
if (size & ARCHITECTURE_WORD_MASK) {
size += ARCHITECTURE_WORD_BYTES - (size & ARCHITECTURE_WORD_MASK);
}
if (size != 0) {
void *ptr = sbrk(size);