diff src/timer/epoc/SDL_systimer.cpp @ 173:83018110dce8

Added initial support for EPOC/Symbian OS (thanks Hannu!)
author Sam Lantinga <slouken@libsdl.org>
date Tue, 11 Sep 2001 20:38:49 +0000
parents
children e8157fcb3114
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--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/timer/epoc/SDL_systimer.cpp	Tue Sep 11 20:38:49 2001 +0000
@@ -0,0 +1,111 @@
+/*
+    SDL - Simple DirectMedia Layer
+    Copyright (C) 1997, 1998, 1999, 2000, 2001  Sam Lantinga
+
+    This library is free software; you can redistribute it and/or
+    modify it under the terms of the GNU Library General Public
+    License as published by the Free Software Foundation; either
+    version 2 of the License, or (at your option) any later version.
+
+    This library 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
+    Library General Public License for more details.
+
+    You should have received a copy of the GNU Library General Public
+    License along with this library; if not, write to the Free
+    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+
+    Sam Lantinga
+    slouken@devolution.com
+*/
+
+/*
+    SDL_systimer.cpp
+
+    Epoc version by Hannu Viitala (hannu.j.viitala@mbnet.fi)
+*/
+
+#include <e32std.h>
+#include <e32hal.h>
+
+extern "C" {
+#include "SDL_error.h"
+#include "SDL_thread.h"
+#include "SDL_timer.h"
+#include "SDL_timer_c.h"
+
+static TUint start = 0;
+static TInt tickPeriodMilliSeconds;
+
+
+void SDL_StartTicks(void)
+{
+	/* Set first ticks value */
+    start = User::TickCount();
+
+    TTimeIntervalMicroSeconds32 period;
+	TInt tmp = UserHal::TickPeriod(period);
+    tickPeriodMilliSeconds = period.Int() / 1000;
+}
+
+Uint32 SDL_GetTicks(void)
+{
+    TUint deltaTics = User::TickCount() - start;
+	return(deltaTics * tickPeriodMilliSeconds); 
+}
+
+void SDL_Delay(Uint32 ms)
+{
+     
+    User::After(TTimeIntervalMicroSeconds32(ms*1000));
+}
+
+/* Data to handle a single periodic alarm */
+static int timer_alive = 0;
+static SDL_Thread *timer = NULL;
+
+static int RunTimer(void *unused)
+{
+	Uint32 ms;
+
+	while ( timer_alive ) {
+		if ( SDL_timer_running ) {
+			SDL_ThreadedTimerCheck();
+		}
+		SDL_Delay(10);
+	}
+	return(0);
+}
+
+/* This is only called if the event thread is not running */
+int SDL_SYS_TimerInit(void)
+{
+	timer_alive = 1;
+	timer = SDL_CreateThread(RunTimer, NULL);
+	if ( timer == NULL )
+		return(-1);
+	return(SDL_SetTimerThreaded(1));
+}
+
+void SDL_SYS_TimerQuit(void)
+{
+	timer_alive = 0;
+	if ( timer ) {
+		SDL_WaitThread(timer, NULL);
+		timer = NULL;
+	}
+}
+
+int SDL_SYS_StartTimer(void)
+{
+	SDL_SetError("Internal logic error: Epoc uses threaded timer");
+	return(-1);
+}
+
+void SDL_SYS_StopTimer(void)
+{
+	return;
+}
+
+}; // extern "C"