PSP: replaced SDL's timer with much simpler and more efficient PspTimer class

svn-id: r49155

1 files changed, 80 insertions, 0 deletions

diff --git a/backends/platform/psp/timer.cpp b/backends/platform/psp/timer.cpp
new file mode 100644
index 0000000000..a35bd9d827
--- /dev/null
+++ b/backends/platform/psp/timer.cpp
@@ -0,0 +1,80 @@
+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * 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 2
+ * 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, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ * $URL: https://scummvm.svn.sourceforge.net/svnroot/scummvm/scummvm/trunk/backends/platform/psp/osys_psp.cpp $
+ * $Id: osys_psp.cpp 46126 2009-11-24 14:18:46Z fingolfin $
+ *
+ */
+
+#include <pspthreadman.h>
+
+#include "common/scummsys.h"
+#include "common/timer.h"
+#include "backends/platform/psp/thread.h"
+#include "backends/platform/psp/timer.h"
+
+//#define __PSP_DEBUG_FUNCS__	/* For debugging function calls */
+//#define __PSP_DEBUG_PRINT__	/* For debug printouts */
+
+#include "backends/platform/psp/trace.h"
+
+bool PspTimer::start() {
+	DEBUG_ENTER_FUNC();
+	
+	if (!_interval || !_callback)
+		return false;
+
+	_threadId = sceKernelCreateThread("timerThread", thread, PRIORITY_TIMER_THREAD, STACK_TIMER_THREAD, THREAD_ATTR_USER, 0);
+
+	if (_threadId < 0) {	// error
+		PSP_ERROR("failed to create timer thread. Error code %d\n", _threadId);
+		return false;
+	}
+	
+	PspTimer *_this = this;	// trick to get into context when the thread starts
+	_init = true;
+	
+	if (sceKernelStartThread(_threadId, sizeof(uint32 *), &_this) < 0) {
+		PSP_ERROR("failed to start thread %d\n", _threadId);
+		return false;
+	}
+	
+	PSP_DEBUG_PRINT("created timer thread[%x]\n", _threadId);
+	
+	return true;
+}
+
+int PspTimer::thread(SceSize, void *__this) {
+	DEBUG_ENTER_FUNC();
+	PspTimer *_this = *(PspTimer **)__this;		// get our this for the context
+	
+	_this->timerThread();
+	return 0;
+};
+
+void PspTimer::timerThread() {
+	DEBUG_ENTER_FUNC();
+	
+	while (_init) {
+		sceKernelDelayThread(_interval);
+		PSP_DEBUG_PRINT("calling callback!\n");
+		_callback();
+	}
+};