1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/ipc/chromium/src/base/ref_counted.cc Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,88 @@
1.4 +// Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
1.5 +// Use of this source code is governed by a BSD-style license that can be
1.6 +// found in the LICENSE file.
1.7 +
1.8 +#include "base/ref_counted.h"
1.9 +
1.10 +#include "base/logging.h"
1.11 +#include "base/thread_collision_warner.h"
1.12 +
1.13 +namespace base {
1.14 +
1.15 +namespace subtle {
1.16 +
1.17 +RefCountedBase::RefCountedBase() : ref_count_(0) {
1.18 +#ifndef NDEBUG
1.19 + in_dtor_ = false;
1.20 +#endif
1.21 +}
1.22 +
1.23 +RefCountedBase::~RefCountedBase() {
1.24 +#ifndef NDEBUG
1.25 + DCHECK(in_dtor_) << "RefCounted object deleted without calling Release()";
1.26 +#endif
1.27 +}
1.28 +
1.29 +void RefCountedBase::AddRef() {
1.30 + // TODO(maruel): Add back once it doesn't assert 500 times/sec.
1.31 + // Current thread books the critical section "AddRelease" without release it.
1.32 + // DFAKE_SCOPED_LOCK_THREAD_LOCKED(add_release_);
1.33 +#ifndef NDEBUG
1.34 + DCHECK(!in_dtor_);
1.35 +#endif
1.36 + ++ref_count_;
1.37 +}
1.38 +
1.39 +bool RefCountedBase::Release() {
1.40 + // TODO(maruel): Add back once it doesn't assert 500 times/sec.
1.41 + // Current thread books the critical section "AddRelease" without release it.
1.42 + // DFAKE_SCOPED_LOCK_THREAD_LOCKED(add_release_);
1.43 +#ifndef NDEBUG
1.44 + DCHECK(!in_dtor_);
1.45 +#endif
1.46 + if (--ref_count_ == 0) {
1.47 +#ifndef NDEBUG
1.48 + in_dtor_ = true;
1.49 +#endif
1.50 + return true;
1.51 + }
1.52 + return false;
1.53 +}
1.54 +
1.55 +RefCountedThreadSafeBase::RefCountedThreadSafeBase() : ref_count_(0) {
1.56 +#ifndef NDEBUG
1.57 + in_dtor_ = false;
1.58 +#endif
1.59 +}
1.60 +
1.61 +RefCountedThreadSafeBase::~RefCountedThreadSafeBase() {
1.62 +#ifndef NDEBUG
1.63 + DCHECK(in_dtor_) << "RefCountedThreadSafe object deleted without "
1.64 + "calling Release()";
1.65 +#endif
1.66 +}
1.67 +
1.68 +void RefCountedThreadSafeBase::AddRef() {
1.69 +#ifndef NDEBUG
1.70 + DCHECK(!in_dtor_);
1.71 +#endif
1.72 + AtomicRefCountInc(&ref_count_);
1.73 +}
1.74 +
1.75 +bool RefCountedThreadSafeBase::Release() {
1.76 +#ifndef NDEBUG
1.77 + DCHECK(!in_dtor_);
1.78 + DCHECK(!AtomicRefCountIsZero(&ref_count_));
1.79 +#endif
1.80 + if (!AtomicRefCountDec(&ref_count_)) {
1.81 +#ifndef NDEBUG
1.82 + in_dtor_ = true;
1.83 +#endif
1.84 + return true;
1.85 + }
1.86 + return false;
1.87 +}
1.88 +
1.89 +} // namespace subtle
1.90 +
1.91 +} // namespace base
