void HeapProfiler::malloc(void *ptr, size_t size, const StackTrace &trace){
std::lock_guard<std::mutex> lk(mutex);
fprintf(data.output, "+ %lx %lx %lx\n", size, trace.index(), reinterpret_cast<uintptr_t>(ptr));
data.tick();
// Store the stracktrace hash of this allocation in the pointers map.
ptrs[ptr] = trace.hash;
}
