96 lines
2.1 KiB
C++
96 lines
2.1 KiB
C++
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// Copyright (c) 2011 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/memory/ref_counted.h"
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#include "base/logging.h"
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#include "base/threading/thread_collision_warner.h"
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namespace base {
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namespace subtle {
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RefCountedBase::RefCountedBase()
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: ref_count_(0)
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#ifndef NDEBUG
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, in_dtor_(false)
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#endif
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{
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}
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RefCountedBase::~RefCountedBase() {
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#ifndef NDEBUG
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DCHECK(in_dtor_) << "RefCounted object deleted without calling Release()";
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#endif
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}
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void RefCountedBase::AddRef() const {
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// TODO(maruel): Add back once it doesn't assert 500 times/sec.
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// Current thread books the critical section "AddRelease" without release it.
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// DFAKE_SCOPED_LOCK_THREAD_LOCKED(add_release_);
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#ifndef NDEBUG
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DCHECK(!in_dtor_);
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#endif
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++ref_count_;
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}
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bool RefCountedBase::Release() const {
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// TODO(maruel): Add back once it doesn't assert 500 times/sec.
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// Current thread books the critical section "AddRelease" without release it.
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// DFAKE_SCOPED_LOCK_THREAD_LOCKED(add_release_);
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#ifndef NDEBUG
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DCHECK(!in_dtor_);
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#endif
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if (--ref_count_ == 0) {
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#ifndef NDEBUG
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in_dtor_ = true;
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#endif
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return true;
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}
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return false;
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}
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bool RefCountedThreadSafeBase::HasOneRef() const {
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return AtomicRefCountIsOne(
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&const_cast<RefCountedThreadSafeBase*>(this)->ref_count_);
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}
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RefCountedThreadSafeBase::RefCountedThreadSafeBase() : ref_count_(0) {
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#ifndef NDEBUG
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in_dtor_ = false;
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#endif
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}
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RefCountedThreadSafeBase::~RefCountedThreadSafeBase() {
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#ifndef NDEBUG
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DCHECK(in_dtor_) << "RefCountedThreadSafe object deleted without "
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"calling Release()";
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#endif
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}
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void RefCountedThreadSafeBase::AddRef() const {
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#ifndef NDEBUG
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DCHECK(!in_dtor_);
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#endif
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AtomicRefCountInc(&ref_count_);
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}
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bool RefCountedThreadSafeBase::Release() const {
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#ifndef NDEBUG
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DCHECK(!in_dtor_);
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DCHECK(!AtomicRefCountIsZero(&ref_count_));
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#endif
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if (!AtomicRefCountDec(&ref_count_)) {
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#ifndef NDEBUG
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in_dtor_ = true;
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#endif
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return true;
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}
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return false;
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}
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} // namespace subtle
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} // namespace base
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