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// Copyright (c) 2011 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/memory/ref_counted.h"
#include "base/threading/thread_collision_warner.h"
namespace base {
namespace subtle {
bool RefCountedThreadSafeBase::HasOneRef() const {
return AtomicRefCountIsOne(
&const_cast<RefCountedThreadSafeBase*>(this)->ref_count_);
}
RefCountedThreadSafeBase::RefCountedThreadSafeBase() : ref_count_(0) {
#ifndef NDEBUG
in_dtor_ = false;
#endif
}
RefCountedThreadSafeBase::~RefCountedThreadSafeBase() {
#ifndef NDEBUG
DCHECK(in_dtor_) << "RefCountedThreadSafe object deleted without "
"calling Release()";
#endif
}
void RefCountedThreadSafeBase::AddRef() const {
#ifndef NDEBUG
DCHECK(!in_dtor_);
#endif
AtomicRefCountInc(&ref_count_);
}
bool RefCountedThreadSafeBase::Release() const {
#ifndef NDEBUG
DCHECK(!in_dtor_);
DCHECK(!AtomicRefCountIsZero(&ref_count_));
#endif
if (!AtomicRefCountDec(&ref_count_)) {
#ifndef NDEBUG
in_dtor_ = true;
#endif
return true;
}
return false;
}
} // namespace subtle
} // namespace base
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