1// Copyright (c) 2012 The Chromium Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5#include "base/callback_internal.h"
6
7#include "base/logging.h"
8
9namespace base {
10namespace internal {
11
12void CallbackBase::Reset() {
13  polymorphic_invoke_ = NULL;
14  // NULL the bind_state_ last, since it may be holding the last ref to whatever
15  // object owns us, and we may be deleted after that.
16  bind_state_ = NULL;
17}
18
19bool CallbackBase::Equals(const CallbackBase& other) const {
20  return bind_state_.get() == other.bind_state_.get() &&
21         polymorphic_invoke_ == other.polymorphic_invoke_;
22}
23
24CallbackBase::CallbackBase(BindStateBase* bind_state)
25    : bind_state_(bind_state),
26      polymorphic_invoke_(NULL) {
27  DCHECK(!bind_state_.get() || bind_state_->HasOneRef());
28}
29
30CallbackBase::~CallbackBase() {
31}
32
33}  // namespace internal
34}  // namespace base
35