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menuetlibc: thread-safe malloc

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git-svn-id: svn://kolibrios.org@5129 a494cfbc-eb01-0410-851d-a64ba20cac60
This commit is contained in:
CleverMouse 2014-09-17 19:32:20 +00:00
parent 347bbd1570
commit 73dfca6a00
1 changed files with 11 additions and 2 deletions
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13
programs/develop/libraries/menuetlibc/src/libc/ansi/stdlib/malloc.c
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@ -110,7 +110,7 @@ split_block(BLOCK *b, size_t size)
return rv; return rv;
} }
#define RET(rv) CHECK(rv); ENDSZ(rv) |= 1; rv->size |= 1; return DATA(rv) #define RET(rv) CHECK(rv); ENDSZ(rv) |= 1; rv->size |= 1; malloc_unlock(); return DATA(rv)
void * malloc(size_t size) void * malloc(size_t size)
{ {
@ -124,6 +124,8 @@ void * malloc(size_t size)
printf("malloc(%u)\n", size); printf("malloc(%u)\n", size);
#endif #endif
malloc_lock();
#if NUMSMALL #if NUMSMALL
if (size < SMALL) if (size < SMALL)
{ {
@ -131,6 +133,7 @@ void * malloc(size_t size)
if (rv) if (rv)
{ {
smallblocks[size/ALIGN] = rv->next; smallblocks[size/ALIGN] = rv->next;
malloc_unlock();
return DATA(rv); return DATA(rv);
} }
} }
@ -205,8 +208,10 @@ void * malloc(size_t size)
chunk_size = size+16; /* two ends plus two placeholders */ chunk_size = size+16; /* two ends plus two placeholders */
rv = (BLOCK *)sbrk(chunk_size); rv = (BLOCK *)sbrk(chunk_size);
if (rv == (BLOCK *)(-1)) if (rv == (BLOCK *)(-1)) {
malloc_unlock();
return 0; return 0;
}
#if DEBUG #if DEBUG
printf("sbrk(%d) -> %08x, expected %08x\n", chunk_size, rv, expected_sbrk); printf("sbrk(%d) -> %08x, expected %08x\n", chunk_size, rv, expected_sbrk);
#endif #endif
@ -297,11 +302,14 @@ free(void *ptr)
return; return;
block = (BLOCK *)((char *)ptr-4); block = (BLOCK *)((char *)ptr-4);
malloc_lock();
#if NUMSMALL #if NUMSMALL
if (block->size < SMALL) if (block->size < SMALL)
{ {
block->next = smallblocks[block->size/ALIGN]; block->next = smallblocks[block->size/ALIGN];
smallblocks[block->size/ALIGN] = block; smallblocks[block->size/ALIGN] = block;
malloc_unlock();
return; return;
} }
#endif #endif
@ -335,6 +343,7 @@ free(void *ptr)
block->next = freelist[b]; block->next = freelist[b];
freelist[b] = block; freelist[b] = block;
CHECK(block); CHECK(block);
malloc_unlock();
} }
void * realloc(void *ptr, size_t size) void * realloc(void *ptr, size_t size)