92 lines
2.4 KiB
C++
92 lines
2.4 KiB
C++
// Copyright 2013 Dolphin Emulator Project / 2014 Citra Emulator Project
|
|
// Licensed under GPLv2 or any later version
|
|
// Refer to the license.txt file included.
|
|
|
|
#pragma once
|
|
|
|
#include <chrono>
|
|
#include <condition_variable>
|
|
#include <cstddef>
|
|
#include <mutex>
|
|
#include <thread>
|
|
#include "common/common_types.h"
|
|
|
|
namespace Common {
|
|
|
|
int CurrentThreadId();
|
|
|
|
void SetThreadAffinity(std::thread::native_handle_type thread, u32 mask);
|
|
void SetCurrentThreadAffinity(u32 mask);
|
|
|
|
class Event {
|
|
public:
|
|
Event() : is_set(false) {}
|
|
|
|
void Set() {
|
|
std::lock_guard<std::mutex> lk(mutex);
|
|
if (!is_set) {
|
|
is_set = true;
|
|
condvar.notify_one();
|
|
}
|
|
}
|
|
|
|
void Wait() {
|
|
std::unique_lock<std::mutex> lk(mutex);
|
|
condvar.wait(lk, [&] { return is_set; });
|
|
is_set = false;
|
|
}
|
|
|
|
template <class Clock, class Duration>
|
|
bool WaitUntil(const std::chrono::time_point<Clock, Duration>& time) {
|
|
std::unique_lock<std::mutex> lk(mutex);
|
|
if (!condvar.wait_until(lk, time, [this] { return is_set; }))
|
|
return false;
|
|
is_set = false;
|
|
return true;
|
|
}
|
|
|
|
void Reset() {
|
|
std::unique_lock<std::mutex> lk(mutex);
|
|
// no other action required, since wait loops on the predicate and any lingering signal will
|
|
// get cleared on the first iteration
|
|
is_set = false;
|
|
}
|
|
|
|
private:
|
|
bool is_set;
|
|
std::condition_variable condvar;
|
|
std::mutex mutex;
|
|
};
|
|
|
|
class Barrier {
|
|
public:
|
|
explicit Barrier(std::size_t count_) : count(count_), waiting(0), generation(0) {}
|
|
|
|
/// Blocks until all "count" threads have called Sync()
|
|
void Sync() {
|
|
std::unique_lock<std::mutex> lk(mutex);
|
|
const std::size_t current_generation = generation;
|
|
|
|
if (++waiting == count) {
|
|
generation++;
|
|
waiting = 0;
|
|
condvar.notify_all();
|
|
} else {
|
|
condvar.wait(lk,
|
|
[this, current_generation] { return current_generation != generation; });
|
|
}
|
|
}
|
|
|
|
private:
|
|
std::condition_variable condvar;
|
|
std::mutex mutex;
|
|
const std::size_t count;
|
|
std::size_t waiting;
|
|
std::size_t generation; // Incremented once each time the barrier is used
|
|
};
|
|
|
|
void SleepCurrentThread(int ms);
|
|
void SwitchCurrentThread(); // On Linux, this is equal to sleep 1ms
|
|
void SetCurrentThreadName(const char* name);
|
|
|
|
} // namespace Common
|