mirror of
https://github.com/klzgrad/naiveproxy.git
synced 2024-12-01 01:36:09 +03:00
33 lines
928 B
C++
33 lines
928 B
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/synchronization/atomic_flag.h"
|
||
|
|
|
||
|
|
#include "base/logging.h"
|
||
|
|
|
||
|
|
namespace base {
|
||
|
|
|
||
|
|
AtomicFlag::AtomicFlag() {
|
||
|
|
// It doesn't matter where the AtomicFlag is built so long as it's always
|
||
|
|
// Set() from the same sequence after. Note: the sequencing requirements are
|
||
|
|
// necessary for IsSet()'s callers to know which sequence's memory operations
|
||
|
|
// they are synchronized with.
|
||
|
|
set_sequence_checker_.DetachFromSequence();
|
||
|
|
}
|
||
|
|
|
||
|
|
void AtomicFlag::Set() {
|
||
|
|
DCHECK(set_sequence_checker_.CalledOnValidSequence());
|
||
|
|
base::subtle::Release_Store(&flag_, 1);
|
||
|
|
}
|
||
|
|
|
||
|
|
bool AtomicFlag::IsSet() const {
|
||
|
|
return base::subtle::Acquire_Load(&flag_) != 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
void AtomicFlag::UnsafeResetForTesting() {
|
||
|
|
base::subtle::Release_Store(&flag_, 0);
|
||
|
|
}
|
||
|
|
|
||
|
|
} // namespace base
|