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 bool CallbackBase::is_null() const { 13 return bind_state_.get() == NULL; 14 } 15 16 void CallbackBase::Reset() { 17 polymorphic_invoke_ = NULL; 18 // NULL the bind_state_ last, since it may be holding the last ref to whatever 19 // object owns us, and we may be deleted after that. 20 bind_state_ = NULL; 21 } 22 23 bool CallbackBase::Equals(const CallbackBase& other) const { 24 return bind_state_.get() == other.bind_state_.get() && 25 polymorphic_invoke_ == other.polymorphic_invoke_; 26 } 27 28 CallbackBase::CallbackBase(BindStateBase* bind_state) 29 : bind_state_(bind_state), 30 polymorphic_invoke_(NULL) { 31 DCHECK(!bind_state_.get() || bind_state_->HasOneRef()); 32 } 33 34 CallbackBase::~CallbackBase() { 35 } 36 37 } // namespace internal 38 } // namespace base 39
