chromium/third_party/crashpad/crashpad/util/synchronization/scoped_spin_guard.h

// Copyright 2022 The Crashpad Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

#ifndef CRASHPAD_UTIL_SYNCHRONIZATION_SCOPED_SPIN_GUARD_H_
#define CRASHPAD_UTIL_SYNCHRONIZATION_SCOPED_SPIN_GUARD_H_

#include <atomic>
#include <optional>
#include <utility>

#include "base/check.h"
#include "base/notreached.h"
#include "util/misc/clock.h"

namespace crashpad {

//! \brief Spinlock state for `ScopedSpinGuard`.
struct SpinGuardState final { … };

//! \brief A scoped mutual-exclusion guard wrapping a `SpinGuardState` with RAII
//!     semantics.
class ScopedSpinGuard final { … };

}  // namespace crashpad

#endif  // CRASHPAD_UTIL_SYNCHRONIZATION_SCOPED_SPIN_GUARD_H_