chromium/base/sequence_checker_impl.h

// Copyright 2012 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef BASE_SEQUENCE_CHECKER_IMPL_H_
#define BASE_SEQUENCE_CHECKER_IMPL_H_

#include <cstdint>
#include <memory>
#include <vector>

#include "base/base_export.h"
#include "base/sequence_token.h"
#include "base/synchronization/lock.h"
#include "base/thread_annotations.h"
#include "base/threading/platform_thread_ref.h"

namespace base {
namespace debug {
class StackTrace;
}

// Real implementation of SequenceChecker.
//
// In most cases, SEQUENCE_CHECKER should be used instead of this, get the right
// implementation for the build configuration. It's possible to temporarily use
// this directly to get sequence checking in production builds, which can be
// handy to debug issues only seen in the field. However, when used in a
// non-DCHECK build, SequenceCheckerImpl::CalledOnValidSequence() will not
// consider locks as a valid way to guarantee mutual exclusion (returns false if
// not invoked from the bound sequence, even if all calls are made under the
// same lock).

// Marked with "context" capability to support thread_annotations.h.
class THREAD_ANNOTATION_ATTRIBUTE__(capability("context"))
    BASE_EXPORT SequenceCheckerImpl { … };

}  // namespace base

#endif  // BASE_SEQUENCE_CHECKER_IMPL_H_