mirror of
https://github.com/klzgrad/naiveproxy.git
synced 2024-11-28 08:16:09 +03:00
69 lines
1.7 KiB
C++
69 lines
1.7 KiB
C++
// 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 {
|
|
|
|
#if DCHECK_IS_ON()
|
|
std::atomic_int g_cross_thread_ref_count_access_allow_count(0);
|
|
#endif
|
|
|
|
} // namespace
|
|
|
|
namespace subtle {
|
|
|
|
bool RefCountedThreadSafeBase::HasOneRef() const {
|
|
return ref_count_.IsOne();
|
|
}
|
|
|
|
#if DCHECK_IS_ON()
|
|
RefCountedThreadSafeBase::~RefCountedThreadSafeBase() {
|
|
DCHECK(in_dtor_) << "RefCountedThreadSafe object deleted without "
|
|
"calling Release()";
|
|
}
|
|
#endif
|
|
|
|
#if defined(ARCH_CPU_64_BIT)
|
|
void RefCountedBase::AddRefImpl() const {
|
|
// Check if |ref_count_| overflow only on 64 bit archs since the number of
|
|
// objects may exceed 2^32.
|
|
// To avoid the binary size bloat, use non-inline function here.
|
|
CHECK(++ref_count_ > 0);
|
|
}
|
|
#endif
|
|
|
|
#if !defined(ARCH_CPU_X86_FAMILY)
|
|
bool RefCountedThreadSafeBase::Release() const {
|
|
return ReleaseImpl();
|
|
}
|
|
void RefCountedThreadSafeBase::AddRef() const {
|
|
AddRefImpl();
|
|
}
|
|
#endif
|
|
|
|
#if DCHECK_IS_ON()
|
|
bool RefCountedBase::CalledOnValidSequence() const {
|
|
return sequence_checker_.CalledOnValidSequence() ||
|
|
g_cross_thread_ref_count_access_allow_count.load() != 0;
|
|
}
|
|
#endif
|
|
|
|
} // namespace subtle
|
|
|
|
#if DCHECK_IS_ON()
|
|
ScopedAllowCrossThreadRefCountAccess::ScopedAllowCrossThreadRefCountAccess() {
|
|
++g_cross_thread_ref_count_access_allow_count;
|
|
}
|
|
|
|
ScopedAllowCrossThreadRefCountAccess::~ScopedAllowCrossThreadRefCountAccess() {
|
|
--g_cross_thread_ref_count_access_allow_count;
|
|
}
|
|
#endif
|
|
|
|
} // namespace base
|