Function _rpmalloc_aligned_reallocate

source/extern/rpmalloc.c:2682–2705

}

static void*
_rpmalloc_aligned_reallocate(heap_t* heap, void* ptr, size_t alignment, size_t size, size_t oldsize,
                           unsigned int flags) {
	if (alignment <= SMALL_GRANULARITY)
		return _rpmalloc_reallocate(heap, ptr, size, oldsize, flags);

	int no_alloc = !!(flags & RPMALLOC_GROW_OR_FAIL);
	size_t usablesize = (ptr ? _rpmalloc_usable_size(ptr) : 0);
	if ((usablesize >= size) && !((uintptr_t)ptr & (alignment - 1))) {
		if (no_alloc || (size >= (usablesize / 2)))
			return ptr;
	}
	// Aligned alloc marks span as having aligned blocks
	void* block = (!no_alloc ? _rpmalloc_aligned_allocate(heap, alignment, size) : 0);
	if (EXPECTED(block != 0)) {
		if (!(flags & RPMALLOC_NO_PRESERVE) && ptr) {
			if (!oldsize)
				oldsize = usablesize;
			memcpy(block, ptr, oldsize < size ? oldsize : size);
		}
		_rpmalloc_deallocate(ptr);
	}
	return block;
}


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