dart-sdk/runtime/vm/os_thread_absl.h
Ryan Macnak a48d05c8f9 [vm] Add build-time option to use absl mutexes in place of pthread mutexes.
TEST=ci, cbuild
Bug: b/220994782
Change-Id: Id1a15d0d9fcef192847b25a2549730eb1014a99e
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/236760
Reviewed-by: Alexander Aprelev <aam@google.com>
Commit-Queue: Ryan Macnak <rmacnak@google.com>
2022-03-10 23:48:05 +00:00

77 lines
1.7 KiB
C++

// Copyright (c) 2022, the Dart project authors. Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.
#ifndef RUNTIME_VM_OS_THREAD_ABSL_H_
#define RUNTIME_VM_OS_THREAD_ABSL_H_
#if !defined(RUNTIME_VM_OS_THREAD_H_)
#error Do not include os_thread_absl.h directly; use os_thread.h instead.
#endif
#include <pthread.h>
#include "platform/assert.h"
#include "platform/globals.h"
#include "third_party/absl/synchronization/mutex.h"
namespace dart {
typedef pthread_key_t ThreadLocalKey;
typedef pthread_t ThreadId;
typedef pthread_t ThreadJoinId;
static const ThreadLocalKey kUnsetThreadLocalKey =
static_cast<pthread_key_t>(-1);
class ThreadInlineImpl {
private:
ThreadInlineImpl() {}
~ThreadInlineImpl() {}
static uword GetThreadLocal(ThreadLocalKey key) {
ASSERT(key != kUnsetThreadLocalKey);
return reinterpret_cast<uword>(pthread_getspecific(key));
}
friend class OSThread;
DISALLOW_ALLOCATION();
DISALLOW_COPY_AND_ASSIGN(ThreadInlineImpl);
};
class MutexData {
private:
MutexData() : mutex_() {}
~MutexData() {}
absl::Mutex* mutex() { return &mutex_; }
absl::Mutex mutex_;
friend class Mutex;
DISALLOW_ALLOCATION();
DISALLOW_COPY_AND_ASSIGN(MutexData);
};
class MonitorData {
private:
MonitorData() : mutex_(), cond_() {}
~MonitorData() {}
absl::Mutex* mutex() { return &mutex_; }
absl::CondVar* cond() { return &cond_; }
absl::Mutex mutex_;
absl::CondVar cond_;
friend class Monitor;
DISALLOW_ALLOCATION();
DISALLOW_COPY_AND_ASSIGN(MonitorData);
};
} // namespace dart
#endif // RUNTIME_VM_OS_THREAD_ABSL_H_