| // Copyright (c) 2012 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include "base/callback_internal.h" |
| |
| #include "base/logging.h" |
| |
| namespace base { |
| namespace internal { |
| |
| void BindStateBase::AddRef() { |
| ++ref_count_; |
| } |
| |
| void BindStateBase::Release() { |
| if (--ref_count_ == 0) |
| destructor_(this); |
| } |
| |
| CallbackBase::CallbackBase(const CallbackBase& c) = default; |
| CallbackBase& CallbackBase::operator=(const CallbackBase& c) = default; |
| |
| void CallbackBase::Reset() { |
| polymorphic_invoke_ = NULL; |
| // NULL the bind_state_ last, since it may be holding the last ref to whatever |
| // object owns us, and we may be deleted after that. |
| bind_state_ = NULL; |
| } |
| |
| bool CallbackBase::Equals(const CallbackBase& other) const { |
| return bind_state_.get() == other.bind_state_.get() && |
| polymorphic_invoke_ == other.polymorphic_invoke_; |
| } |
| |
| CallbackBase::CallbackBase(BindStateBase* bind_state) |
| : bind_state_(bind_state), |
| polymorphic_invoke_(NULL) { |
| DCHECK(!bind_state_.get() || bind_state_->ref_count_ == 1); |
| } |
| |
| CallbackBase::~CallbackBase() { |
| } |
| |
| } // namespace internal |
| } // namespace base |