Rewrote Task Scheduler

Better and faster implementation


Former-commit-id: d765415ca0576cd843480292e30c2d7bafa7f66a

src/Nazara/Core/Win32/TaskSchedulerImpl.hpp

@@ -0,0 +1,48 @@
+// Copyright (C) 2013 Jérôme Leclercq
+// This file is part of the "Nazara Engine - Core module"
+// For conditions of distribution and use, see copyright notice in Config.hpp
+
+#pragma once
+
+#ifndef NAZARA_TASKSCHEDULERIMPL_HPP
+#define NAZARA_TASKSCHEDULERIMPL_HPP
+
+#include <Nazara/Prerequesites.hpp>
+#include <Nazara/Core/Functor.hpp>
+#include <atomic>
+#include <memory>
+#include <queue>
+#include <windows.h>
+
+class NzTaskSchedulerImpl
+{
+	public:
+		NzTaskSchedulerImpl() = delete;
+		~NzTaskSchedulerImpl() = delete;
+
+		static bool Initialize(unsigned int workerCount);
+		static bool IsInitialized();
+		static void Run(NzFunctor** tasks, unsigned int count);
+		static void Uninitialize();
+		static void WaitForTasks();
+
+	private:
+		static NzFunctor* StealTask(unsigned int workerID);
+		static unsigned int __stdcall WorkerProc(void* userdata);
+
+		struct Worker
+		{
+			std::atomic_uint workCount;
+			std::queue<NzFunctor*> queue;
+			CRITICAL_SECTION queueMutex;
+			HANDLE wakeEvent;
+			volatile bool running;
+		};
+
+		static std::unique_ptr<HANDLE[]> s_doneEvents; // Doivent être contigus
+		static std::unique_ptr<Worker[]> s_workers;
+		static std::unique_ptr<HANDLE[]> s_workerThreads; // Doivent être contigus
+		static unsigned int s_workerCount;
+};
+
+#endif // NAZARA_TASKSCHEDULERIMPL_HPP