base/callback_internal.cc

   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
   9 namespace base {
  10 namespace internal {
  11
  12 void 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
  19 bool CallbackBase::Equals(const CallbackBase& other) const {
  20   return bind_state_.get() == other.bind_state_.get() &&
  21          polymorphic_invoke_ == other.polymorphic_invoke_;
  22 }
  23
  24 CallbackBase::CallbackBase(BindStateBase* bind_state)
  25     : bind_state_(bind_state),
  26       polymorphic_invoke_(NULL) {
  27   DCHECK(!bind_state_.get() || bind_state_->HasOneRef());
  28 }
  29
  30 CallbackBase::~CallbackBase() {
  31 }
  32
  33 }  // namespace internal
  34 }  // namespace base