ctrl_blk* ctrl_blk::make_blk( void* p , const std::size_t sz ){
struct null_deleter {
void operator()( void* ) {
}
};
return make_blk( p , sz , null_deleter());
}
/*
* fda_malloc - allocate size chunk of memory and create debug
* records for it.
*/
void* fda_malloc(size_t size, const char* file, int line)
{
void* p;
size_t blk_size;
Location* location;
assert(0 < size);
assert(0 != file);
assert(sizeof(void*) == sizeof(size_t));
/*
* memory limiter do not allocate more than byteLimit
*/
if ((size + byteCount) > byteLimit)
return 0;
/*
* Make sure that there is enough room for prefix/postfix
* and we get an aligned buffer
*/
blk_size = BASE_SIZE(size);
if ((p = malloc(blk_size)) == 0) {
lowMemFn();
if ((p = malloc(blk_size)) == 0)
noMemFn();
}
/*
* don't allow malloc to fail
*/
assert(0 != p);
/*
* shred the memory and set bounds markers
*/
SHRED_MEM(p, blk_size);
*((size_t*) p) = DEADBEEF;
*((size_t*) (BYTE_PTR(p) + blk_size - S_SIZE)) = DEADBEEF;
/*
* find the location or create a new one
*/
if (0 == (location = findLocation(file, line))) {
if (0 == (location = addLocation(file, line))) {
free(p);
noMemFn();
}
}
/*
* don't allow noMemFn to return
*/
assert(0 != location);
if (!make_blk(BYTE_PTR(p) + S_SIZE, size, location)) {
if (0 == location->count)
freeLocation(location);
free(p);
p = 0;
noMemFn();
}
/*
* don't allow noMemFn to return
*/
assert(0 != p);
return (BYTE_PTR(p) + S_SIZE);
}
