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Use condition var to properly pause the CPU thread

Adds support for threaded pausing so citra doesn't spin wait on pause
This commit is contained in:
James Rowe 2015-05-16 11:56:00 -06:00
parent 9fb9750411
commit a406207cd8
2 changed files with 14 additions and 2 deletions

View file

@ -59,6 +59,9 @@ void EmuThread::run() {
yieldCurrentThread();
was_active = false;
} else {
std::unique_lock<std::mutex> lock(running_mutex);
running_cv.wait(lock, [this]{ return IsRunning() || stop_run; });
}
}

View file

@ -3,6 +3,8 @@
// Refer to the license.txt file included.
#include <atomic>
#include <condition_variable>
#include <mutex>
#include <QThread>
#include <QGLWidget>
@ -40,7 +42,12 @@ public:
* @param running Boolean value, set the emulation thread to running if true
* @note This function is thread-safe
*/
void SetRunning(bool running) { this->running = running; }
void SetRunning(bool running) {
std::unique_lock<std::mutex> lock(running_mutex);
this->running = running;
lock.unlock();
running_cv.notify_all();
}
/**
* Check if the emulation thread is running or not
@ -54,13 +61,15 @@ public:
*/
void RequestStop() {
stop_run = true;
running = false;
SetRunning(false);
};
private:
bool exec_step;
bool running;
std::atomic<bool> stop_run;
std::mutex running_mutex;
std::condition_variable running_cv;
GRenderWindow* render_window;