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// Copyright (c) 2012, 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_BIN_THREAD_H_
#define RUNTIME_BIN_THREAD_H_
#include "platform/globals.h"
namespace dart {
namespace bin {
class Thread;
class Mutex;
class Monitor;
} // namespace bin
} // namespace dart
// Declare the OS-specific types ahead of defining the generic classes.
#if defined(DART_USE_ABSL)
#include "bin/thread_absl.h"
#elif defined(DART_HOST_OS_FUCHSIA)
#include "bin/thread_fuchsia.h"
#elif defined(DART_HOST_OS_LINUX) || defined(DART_HOST_OS_ANDROID)
#include "bin/thread_linux.h"
#elif defined(DART_HOST_OS_MACOS)
#include "bin/thread_macos.h"
#elif defined(DART_HOST_OS_WINDOWS)
#include "bin/thread_win.h"
#else
#error Unknown target os.
#endif
namespace dart {
namespace bin {
class Thread {
public:
static const ThreadId kInvalidThreadId;
typedef void (*ThreadStartFunction)(uword parameter);
// Start a thread running the specified function. Returns 0 if the
// thread started successfully and a system specific error code if
// the thread failed to start.
static int Start(const char* name,
ThreadStartFunction function,
uword parameters);
static intptr_t GetMaxStackSize();
static ThreadId GetCurrentThreadId();
static bool Compare(ThreadId a, ThreadId b);
static void InitOnce();
private:
DISALLOW_ALLOCATION();
DISALLOW_IMPLICIT_CONSTRUCTORS(Thread);
};
class Mutex {
public:
Mutex();
~Mutex();
void Lock();
bool TryLock();
void Unlock();
private:
MutexData data_;
DISALLOW_COPY_AND_ASSIGN(Mutex);
};
class Monitor {
public:
enum WaitResult { kNotified, kTimedOut };
static constexpr int64_t kNoTimeout = 0;
Monitor();
~Monitor();
void Enter();
void Exit();
// Wait for notification or timeout.
WaitResult Wait(int64_t millis);
WaitResult WaitMicros(int64_t micros);
// Notify waiting threads.
void Notify();
void NotifyAll();
private:
MonitorData data_; // OS-specific data.
DISALLOW_COPY_AND_ASSIGN(Monitor);
};
} // namespace bin
} // namespace dart
#endif // RUNTIME_BIN_THREAD_H_