concurrency.h

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// Copyright 2025 Google LLC
//
// 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 ACTIONENGINE_CONCURRENCY_CONCURRENCY_H_
#define ACTIONENGINE_CONCURRENCY_CONCURRENCY_H_
 
#include <absl/base/attributes.h>
#include <absl/base/nullability.h>
#include <absl/base/thread_annotations.h>
#include <absl/time/time.h>
 
#include "thread/concurrency.h"
 
// IWYU pragma: begin_exports
#if GOOGLE3
#include "actionengine/google3_concurrency_headers.h"
#else
#include "thread/concurrency.h"
#endif  // GOOGLE3
// IWYU pragma: end_exports


namespace act::concurrency {
 
#if GOOGLE3
using CondVar = absl::CondVar;
using Mutex = absl::Mutex;
using MutexLock = absl::MutexLock;
 
inline void SleepFor(absl::Duration duration) {
  absl::SleepFor(duration);
}
#else
using CondVar = impl::CondVar;
using Mutex = impl::Mutex;
using MutexLock = impl::MutexLock;
 
void SleepFor(absl::Duration duration);
#endif  // GOOGLE3

class ABSL_SCOPED_LOCKABLE TwoMutexLock {
 public:
  explicit TwoMutexLock(Mutex* absl_nonnull mu1, Mutex* absl_nonnull mu2)
      ABSL_EXCLUSIVE_LOCK_FUNCTION(mu1, mu2);
 
  // This class is not copyable or movable.
  TwoMutexLock(const TwoMutexLock&) = delete;  // NOLINT(runtime/mutex)
  TwoMutexLock& operator=(const TwoMutexLock&) = delete;
 
  ~TwoMutexLock() ABSL_UNLOCK_FUNCTION();
 
 private:
  Mutex* absl_nonnull const mu1_;
  Mutex* absl_nonnull const mu2_;
};
}  // namespace act::concurrency
 
namespace act {
 
using concurrency::CondVar;
using concurrency::Mutex;
using concurrency::MutexLock;

inline void SleepFor(absl::Duration duration) {
  concurrency::SleepFor(duration);
}
 
}  // namespace act
 
#endif  // ACTIONENGINE_CONCURRENCY_CONCURRENCY_H_