void* js_alloc_no_pointer(size_t sz)
#endif
{
#ifdef JS_GC_DEBUG
void* ptr = js_alloc_impl(sz, file, line);
#else
void* ptr = js_alloc(sz);
#endif
alloc_t* alloc = allocs_lookup(ptr);
alloc->no_pointer = true;
return ptr;
}
void* js_realloc(void* ptr, size_t sz)
#endif
{
#ifdef JS_GC_DEBUG
void* new_ptr = js_alloc_impl(sz, file, line);
#else
void* new_ptr = js_alloc(sz);
#endif
alloc_t* alloc = allocs_lookup(ptr);
if(alloc) {
memcpy(new_ptr, ptr, sz > alloc->size ? alloc->size : sz);
}
return new_ptr;
// @TODO attempt to realloc existing block
/*
alloc_t* alloc = allocs_lookup(ptr);
void* new_ptr;
uint16_t new_hash;
if(alloc == NULL) {
return js_alloc(sz);
}
new_ptr = realloc(ptr, sz);
if(ptr == new_ptr) {
return ptr;
}
alloc->ptr = new_ptr;
alloc->size = sz;
if(alloc->prev) {
alloc->prev->next = alloc->next;
}
if(alloc->next) {
alloc->next->prev = alloc->prev;
}
new_hash = pointer_hash(alloc->ptr);
alloc->prev = NULL;
alloc->next = allocs[new_hash];
if(alloc->next) {
alloc->next->prev = alloc;
}
allocs[new_hash] = alloc;
return new_ptr;
*/
}
void* js_realloc(void* ptr, size_t sz)
#endif
{
alloc_t* alloc = allocs_lookup(ptr);
void* new_ptr;
uint16_t new_hash;
if(alloc == NULL) {
#ifdef JS_GC_DEBUG
return js_alloc_impl(sz, file, line);
#else
return js_alloc(sz);
#endif
}
new_ptr = realloc(ptr, sz);
if(new_ptr == ptr) {
alloc->size = sz;
return new_ptr;
}
// pointer has changed, so unlink this alloc from its bucket:
new_hash = pointer_hash(new_ptr);
if(alloc->prev == NULL) {
allocs[pointer_hash(ptr)] = alloc->next;
} else {
alloc->prev->next = alloc->next;
}
if(alloc->next) {
alloc->next->prev = alloc->prev;
}
// change the pointer and size:
alloc->ptr = new_ptr;
alloc->size = sz;
// add to the start of its new bucket:
alloc->next = allocs[new_hash];
if(alloc->next) {
alloc->next->prev = alloc;
}
alloc->prev = NULL;
allocs[new_hash] = alloc;
// and return the pointer to the new allocation:
return new_ptr;
}