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backends/platform/libretro/include/libretro-timer.h

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+/* Copyright (C) 2023 Giovanni Cascione <ing.cascione@gmail.com>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#ifndef LIBRETRO_TIMER_H
+#define LIBRETRO_TIMER_H
+
+// Thread switch caller
+#define THREAD_SWITCH_POLL              (1 << 0)
+#define THREAD_SWITCH_DELAY             (1 << 1)
+#define THREAD_SWITCH_UPDATE            (1 << 2)
+
+#include "backends/timer/default/default-timer.h"
+#include "backends/platform/libretro/include/libretro-defs.h"
+
+class LibretroTimerManager : public DefaultTimerManager {
+	uint32 _interval;
+	uint32 _nextSwitchTime;
+	uint32 _spentOnMainThread;
+	uint8 _threadSwitchCaller;
+public:
+	LibretroTimerManager(uint32 refresh_rate);
+	~LibretroTimerManager(void) {};
+	void switchThread(uint8 caller = 0);
+	bool checkThread(uint8 caller = 0);
+	uint32 timeToNextSwitch(void);
+	uint32 spentOnMainThread(void);
+	uint8 getThreadSwitchCaller(void);
+};
+
+#endif // LIBRETRO_TIMER_H