rtpathocl: convert a few shared variables to atomic types

Author: howetuft

include/slg/editaction.h

@@ -61,7 +61,7 @@ class EditActionList {
 	friend std::ostream &operator<<(std::ostream &os, const EditActionList &eal);
 
 private:
-	u_int actions;
+	std::atomic<u_int> actions;
 };
 
 inline std::ostream &operator<<(std::ostream &os, const EditActionList &eal) {

include/slg/engines/renderengine.h

@@ -210,7 +210,7 @@ class RenderEngine {
 	RenderStateSPtr startRenderState;
 	FilmPtr startFilm;
 
-	bool started, editMode, pauseMode;
+	std::atomic<bool> started, editMode, pauseMode;
 
 	FilterRPtr GetPixelFilter() const { return pixelFilter; }
 

include/slg/engines/rtpathocl/rtpathocl.h

@@ -126,12 +126,12 @@ class RTPathOCLRenderEngine : public TilePathOCLRenderEngine {
 
 	// Used by RTPathOCLRenderEngine code to sync. with render thread 0
 	std::barrier<completion_t> *syncBarrier;
-	RTPathOCLSyncType syncType;
+	std::atomic<RTPathOCLSyncType> syncType;
 
 	// Used by all render threads to sync.
 	std::barrier<completion_t> *frameBarrier;
 
-	double frameTime;
+	std::atomic<double> frameTime;
 };
 
 }

src/slg/engines/rtpathocl/rtpathoclthread.cpp

@@ -298,12 +298,13 @@ void RTPathOCLRenderThread::RenderThreadImpl(std::stop_token stop_token) {
 
                                 // Check if we are in pause mode
                                 if (engine->pauseMode) {
-                                        if (requestedStop)
-                                                break;
+									if (requestedStop)
+											break;
 
-                                        std::this_thread::sleep_for(100ms);
-                                } else
-                                        break;
+									std::this_thread::sleep_for(100ms);
+                                } else {
+									break;
+								}
                         }
 
                         // Re-initialize the tile queue for the next frame