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