Function tc_realloc

BeefTools/BeefMem/gperftools/src/debugallocation.cc:1188–1214

}

extern "C" PERFTOOLS_DLL_DECL void* tc_realloc(void* ptr, size_t size) __THROW {
  if (ptr == NULL) {
    ptr = do_debug_malloc_or_debug_cpp_alloc(size);
    MallocHook::InvokeNewHook(ptr, size);
    return ptr;
  }
  if (size == 0) {
    MallocHook::InvokeDeleteHook(ptr);
    DebugDeallocate(ptr, MallocBlock::kMallocType);
    return NULL;
  }
  MallocBlock* old = MallocBlock::FromRawPointer(ptr);
  old->Check(MallocBlock::kMallocType);
  MallocBlock* p = MallocBlock::Allocate(size, MallocBlock::kMallocType);

  // If realloc fails we are to leave the old block untouched and
  // return null
  if (p == NULL)  return NULL;

  memcpy(p->data_addr(), old->data_addr(),
         (old->data_size() < size) ? old->data_size() : size);
  MallocHook::InvokeDeleteHook(ptr);
  MallocHook::InvokeNewHook(p->data_addr(), size);
  DebugDeallocate(ptr, MallocBlock::kMallocType);
  MALLOC_TRACE("realloc", p->data_size(), p->data_addr());
  return p->data_addr();
}

extern "C" PERFTOOLS_DLL_DECL void* tc_new(size_t size) {
  void* ptr = debug_cpp_alloc(size, MallocBlock::kNewType, false);