Mercurial > sdl-ios-xcode
diff src/timer/epoc/SDL_systimer.cpp @ 173:83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
author | Sam Lantinga <slouken@libsdl.org> |
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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"