Engine directory for ticket #1

Engine/source/platformWin32/winAsync.cpp

@@ -0,0 +1,84 @@
+//-----------------------------------------------------------------------------
+// Copyright (c) 2012 GarageGames, LLC
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to
+// deal in the Software without restriction, including without limitation the
+// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+// sell copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+// IN THE SOFTWARE.
+//-----------------------------------------------------------------------------
+
+// For VS2005.
+#define _WIN32_WINNT 0x501
+#ifndef TORQUE_OS_XENON
+#include "platformWin32/platformWin32.h"
+#endif
+#include "platform/async/asyncUpdate.h"
+
+
+AsyncUpdateThread::AsyncUpdateThread( String name, AsyncUpdateList* updateList )
+   : Parent( 0, 0, false, false ),
+     mUpdateList( updateList ),
+     mName( name )
+{
+   // Create an auto-reset event in non-signaled state.
+   mUpdateEvent = CreateEvent( NULL, false, false, NULL );
+}
+
+AsyncUpdateThread::~AsyncUpdateThread()
+{
+   CloseHandle( ( HANDLE ) mUpdateEvent );
+}
+
+void AsyncUpdateThread::_waitForEventAndReset()
+{
+   WaitForSingleObject( ( HANDLE ) mUpdateEvent, INFINITE );
+}
+
+void AsyncUpdateThread::triggerUpdate()
+{
+   SetEvent( ( HANDLE ) mUpdateEvent );
+}
+
+AsyncPeriodicUpdateThread::AsyncPeriodicUpdateThread( String name,
+                                                      AsyncUpdateList* updateList,
+                                                      U32 intervalMS )
+   : Parent( name, updateList )
+{
+   mUpdateTimer = CreateWaitableTimer( NULL, FALSE, NULL );
+
+   // This is a bit contrived.  The 'dueTime' is in 100 nanosecond intervals
+   // and relative if it is negative.  The period is in milliseconds.
+
+   LARGE_INTEGER deltaTime;
+   deltaTime.QuadPart = - LONGLONG( intervalMS * 10 /* micro */ * 1000 /* milli */ );
+
+   SetWaitableTimer( ( HANDLE ) mUpdateTimer, &deltaTime, intervalMS, NULL, NULL, FALSE );
+}
+
+AsyncPeriodicUpdateThread::~AsyncPeriodicUpdateThread()
+{
+   CloseHandle( ( HANDLE ) mUpdateTimer );
+}
+
+void AsyncPeriodicUpdateThread::_waitForEventAndReset()
+{
+   HANDLE handles[ 2 ];
+   
+   handles[ 0 ] = ( HANDLE ) mUpdateEvent;
+   handles[ 1 ] = ( HANDLE ) mUpdateTimer;
+
+   WaitForMultipleObjects( 2, handles, FALSE, INFINITE );
+}