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/*
* Copyright 2018 The Cobalt Authors. All Rights Reserved.
*
* 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 STARBOARD_COMMON_THREAD_H_
#define STARBOARD_COMMON_THREAD_H_
#include <functional>
#include <memory>
#include <string>
#include "starboard/common/scoped_ptr.h"
#include "starboard/configuration.h"
#include "starboard/thread.h"
#include "starboard/types.h"
namespace starboard {
class Semaphore;
class atomic_bool;
class Thread {
public:
struct Options {
Options();
int64_t stack_size;
SbThreadPriority priority_;
bool joinable = true;
};
explicit Thread(const std::string& name);
template <size_t N>
explicit Thread(char const (&name)[N]) : Thread(std::string(name)) {
// Common to all user code, limited by Linux pthreads default
static_assert(N <= 16, "Thread name too long, max 16");
}
virtual ~Thread();
// Subclasses should override the Run method.
// Example:
// void Run() {
// while (!WaitForJoin(kWaitTime)) {
// ... do work ...
// }
// }
virtual void Run() = 0;
// Called by the main thread, this will cause Run() to be invoked
// on another thread.
virtual void Start(const Options& options = Options());
virtual void Join();
bool join_called() const;
protected:
static void* ThreadEntryPoint(void* context);
static void Sleep(int64_t microseconds);
static void SleepMilliseconds(int value);
// Waits at most |timeout| microseconds for Join() to be called. If
// Join() was called then return |true|, else |false|.
bool WaitForJoin(int64_t timeout);
Semaphore* join_sema();
atomic_bool* joined_bool();
struct Data;
std::unique_ptr<Data> d_;
Thread(const Thread&) = delete;
void operator=(const Thread&) = delete;
};
} // namespace starboard
#endif // STARBOARD_COMMON_THREAD_H_