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// 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() {
AtomicRefCountInc(&ref_count_);
}
void BindStateBase::Release() {
if (!AtomicRefCountDec(&ref_count_))
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
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