void *_Mem_Alloc(mempool_t *pool, int size, char *filename, int fileline)
{
void *_Mem_Alloc(mempool_t *pool, int size, char *filename, int fileline)
{
int i, j, k, needed, endbit, largest;
memclump_t *clump, **clumpchainpointer;
int i, j, k, needed, endbit, largest;
memclump_t *clump, **clumpchainpointer;
pool->realsize += sizeof(memheader_t) + size + sizeof(int);
mem = malloc(sizeof(memheader_t) + size + sizeof(int));
if (mem == NULL)
Sys_Error("Mem_Alloc: out of memory (alloc at %s:%i)", filename, fileline);
pool->realsize += sizeof(memheader_t) + size + sizeof(int);
mem = malloc(sizeof(memheader_t) + size + sizeof(int));
if (mem == NULL)
Sys_Error("Mem_Alloc: out of memory (alloc at %s:%i)", filename, fileline);
- mem->sentinel1 = MEMHEADER_SENTINEL;
- *((int *)((long) mem + sizeof(memheader_t) + mem->size)) = MEMHEADER_SENTINEL;
+ mem->sentinel1 = MEMHEADER_SENTINEL1;
+ // we have to use only a single byte for this sentinel, because it may not be aligned, and some platforms can't use unaligned accesses
+ *((qbyte *) mem + sizeof(memheader_t) + mem->size) = MEMHEADER_SENTINEL2;
- memset((void *)((long) mem + sizeof(memheader_t)), 0, mem->size);
- return (void *)((long) mem + sizeof(memheader_t));
+ memset((void *)((qbyte *) mem + sizeof(memheader_t)), 0, mem->size);
+ return (void *)((qbyte *) mem + sizeof(memheader_t));
int i, firstblock, endblock;
memclump_t *clump, **clumpchainpointer;
int i, firstblock, endblock;
memclump_t *clump, **clumpchainpointer;
memheader_t *mem, **memchainpointer;
mempool_t *pool;
if (data == NULL)
Sys_Error("Mem_Free: data == NULL (called at %s:%i)", filename, fileline);
memheader_t *mem, **memchainpointer;
mempool_t *pool;
if (data == NULL)
Sys_Error("Mem_Free: data == NULL (called at %s:%i)", filename, fileline);
- mem = (memheader_t *)((long) data - sizeof(memheader_t));
- if (mem->sentinel1 != MEMHEADER_SENTINEL)
+ mem = (memheader_t *)((qbyte *) data - sizeof(memheader_t));
+ if (mem->sentinel1 != MEMHEADER_SENTINEL1)
Sys_Error("Mem_Free: trashed header sentinel 1 (alloc at %s:%i, free at %s:%i)", mem->filename, mem->fileline, filename, fileline);
Sys_Error("Mem_Free: trashed header sentinel 1 (alloc at %s:%i, free at %s:%i)", mem->filename, mem->fileline, filename, fileline);
Sys_Error("Mem_Free: trashed header sentinel 2 (alloc at %s:%i, free at %s:%i)", mem->filename, mem->fileline, filename, fileline);
pool = mem->pool;
Sys_Error("Mem_Free: trashed header sentinel 2 (alloc at %s:%i, free at %s:%i)", mem->filename, mem->fileline, filename, fileline);
pool = mem->pool;
+ Con_DPrintf("Mem_Free: pool %s, alloc %s:%i, free %s:%i, size %i bytes\n", pool->name, mem->filename, mem->fileline, filename, fileline, mem->size);
for (memchainpointer = &pool->chain;*memchainpointer;memchainpointer = &(*memchainpointer)->chain)
{
if (*memchainpointer == mem)
{
*memchainpointer = mem->chain;
pool->totalsize -= mem->size;
for (memchainpointer = &pool->chain;*memchainpointer;memchainpointer = &(*memchainpointer)->chain)
{
if (*memchainpointer == mem)
{
*memchainpointer = mem->chain;
pool->totalsize -= mem->size;
if ((clump = mem->clump))
{
if (clump->sentinel1 != MEMCLUMP_SENTINEL)
Sys_Error("Mem_Free: trashed clump sentinel 1 (free at %s:%i)", filename, fileline);
if (clump->sentinel2 != MEMCLUMP_SENTINEL)
Sys_Error("Mem_Free: trashed clump sentinel 2 (free at %s:%i)", filename, fileline);
if ((clump = mem->clump))
{
if (clump->sentinel1 != MEMCLUMP_SENTINEL)
Sys_Error("Mem_Free: trashed clump sentinel 1 (free at %s:%i)", filename, fileline);
if (clump->sentinel2 != MEMCLUMP_SENTINEL)
Sys_Error("Mem_Free: trashed clump sentinel 2 (free at %s:%i)", filename, fileline);
if (firstblock & (MEMUNIT - 1))
Sys_Error("Mem_Free: address not valid in clump (free at %s:%i)", filename, fileline);
firstblock /= MEMUNIT;
if (firstblock & (MEMUNIT - 1))
Sys_Error("Mem_Free: address not valid in clump (free at %s:%i)", filename, fileline);
firstblock /= MEMUNIT;
pool->realsize -= sizeof(memheader_t) + mem->size + sizeof(int);
memset(mem, 0xBF, sizeof(memheader_t) + mem->size + sizeof(int));
free(mem);
pool->realsize -= sizeof(memheader_t) + mem->size + sizeof(int);
memset(mem, 0xBF, sizeof(memheader_t) + mem->size + sizeof(int));
free(mem);
pool->totalsize = 0;
pool->realsize = sizeof(mempool_t);
strcpy(pool->name, name);
pool->totalsize = 0;
pool->realsize = sizeof(mempool_t);
strcpy(pool->name, name);
- mem = (memheader_t *)((long) data - sizeof(memheader_t));
- if (mem->sentinel1 != MEMHEADER_SENTINEL)
+ mem = (memheader_t *)((qbyte *) data - sizeof(memheader_t));
+ if (mem->sentinel1 != MEMHEADER_SENTINEL1)
Sys_Error("Mem_CheckSentinels: trashed header sentinel 1 (block allocated at %s:%i, sentinel check at %s:%i)", mem->filename, mem->fileline, filename, fileline);
Sys_Error("Mem_CheckSentinels: trashed header sentinel 1 (block allocated at %s:%i, sentinel check at %s:%i)", mem->filename, mem->fileline, filename, fileline);
Sys_Error("Mem_CheckSentinels: trashed header sentinel 2 (block allocated at %s:%i, sentinel check at %s:%i)", mem->filename, mem->fileline, filename, fileline);
}
Sys_Error("Mem_CheckSentinels: trashed header sentinel 2 (block allocated at %s:%i, sentinel check at %s:%i)", mem->filename, mem->fileline, filename, fileline);
}
static void _Mem_CheckClumpSentinels(memclump_t *clump, char *filename, int fileline)
{
// this isn't really very useful
static void _Mem_CheckClumpSentinels(memclump_t *clump, char *filename, int fileline)
{
// this isn't really very useful
if (clump->sentinel2 != MEMCLUMP_SENTINEL)
Sys_Error("Mem_CheckClumpSentinels: trashed sentinel 2 (sentinel check at %s:%i)", filename, fileline);
}
if (clump->sentinel2 != MEMCLUMP_SENTINEL)
Sys_Error("Mem_CheckClumpSentinels: trashed sentinel 2 (sentinel check at %s:%i)", filename, fileline);
}
for (clump = pool->clumpchain;clump;clump = clump->chain)
_Mem_CheckClumpSentinels(clump, filename, fileline);
}
for (clump = pool->clumpchain;clump;clump = clump->chain)
_Mem_CheckClumpSentinels(clump, filename, fileline);
}