src/timer/dummy/SDL_systimer.c
author Sam Lantinga
Fri, 14 Apr 2006 04:46:47 +0000
changeset 1635 92947e3a18db
parent 1484 b2b476a4a73c
child 1662 782fd950bd46
child 1895 c121d94672cb
child 4159 a1b03ba2fcd0
permissions -rw-r--r--
Make sure code is only compiled if the appropriate subsystem is enabled
slouken@1361
     1
/*
slouken@1361
     2
    SDL - Simple DirectMedia Layer
slouken@1361
     3
    Copyright (C) 1997-2006 Sam Lantinga
slouken@1361
     4
slouken@1361
     5
    This library is free software; you can redistribute it and/or
slouken@1361
     6
    modify it under the terms of the GNU Lesser General Public
slouken@1361
     7
    License as published by the Free Software Foundation; either
slouken@1361
     8
    version 2.1 of the License, or (at your option) any later version.
slouken@1361
     9
slouken@1361
    10
    This library is distributed in the hope that it will be useful,
slouken@1361
    11
    but WITHOUT ANY WARRANTY; without even the implied warranty of
slouken@1361
    12
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
slouken@1361
    13
    Lesser General Public License for more details.
slouken@1361
    14
slouken@1361
    15
    You should have received a copy of the GNU Lesser General Public
slouken@1361
    16
    License along with this library; if not, write to the Free Software
slouken@1361
    17
    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
slouken@1361
    18
slouken@1361
    19
    Sam Lantinga
slouken@1361
    20
    slouken@libsdl.org
slouken@1361
    21
*/
slouken@1402
    22
#include "SDL_config.h"
slouken@1361
    23
slouken@1635
    24
#if defined(SDL_TIMER_DUMMY) || defined(SDL_TIMERS_DISABLED)
slouken@1635
    25
slouken@1484
    26
#include "SDL_timer.h"
slouken@1484
    27
#include "../SDL_timer_c.h"
slouken@1484
    28
slouken@1361
    29
void SDL_StartTicks(void)
slouken@1361
    30
{
slouken@1361
    31
}
slouken@1361
    32
slouken@1361
    33
Uint32 SDL_GetTicks (void)
slouken@1361
    34
{
slouken@1361
    35
	SDL_Unsupported();
slouken@1361
    36
	return 0;
slouken@1361
    37
}
slouken@1361
    38
slouken@1361
    39
void SDL_Delay (Uint32 ms)
slouken@1361
    40
{
slouken@1361
    41
	SDL_Unsupported();
slouken@1361
    42
}
slouken@1361
    43
slouken@1361
    44
#include "SDL_thread.h"
slouken@1361
    45
slouken@1361
    46
/* Data to handle a single periodic alarm */
slouken@1361
    47
static int timer_alive = 0;
slouken@1361
    48
static SDL_Thread *timer = NULL;
slouken@1361
    49
slouken@1361
    50
static int RunTimer(void *unused)
slouken@1361
    51
{
slouken@1361
    52
	while ( timer_alive ) {
slouken@1361
    53
		if ( SDL_timer_running ) {
slouken@1361
    54
			SDL_ThreadedTimerCheck();
slouken@1361
    55
		}
slouken@1361
    56
		SDL_Delay(1);
slouken@1361
    57
	}
slouken@1361
    58
	return(0);
slouken@1361
    59
}
slouken@1361
    60
slouken@1361
    61
/* This is only called if the event thread is not running */
slouken@1361
    62
int SDL_SYS_TimerInit(void)
slouken@1361
    63
{
slouken@1361
    64
	timer_alive = 1;
slouken@1361
    65
	timer = SDL_CreateThread(RunTimer, NULL);
slouken@1361
    66
	if ( timer == NULL )
slouken@1361
    67
		return(-1);
slouken@1361
    68
	return(SDL_SetTimerThreaded(1));
slouken@1361
    69
}
slouken@1361
    70
slouken@1361
    71
void SDL_SYS_TimerQuit(void)
slouken@1361
    72
{
slouken@1361
    73
	timer_alive = 0;
slouken@1361
    74
	if ( timer ) {
slouken@1361
    75
		SDL_WaitThread(timer, NULL);
slouken@1361
    76
		timer = NULL;
slouken@1361
    77
	}
slouken@1361
    78
}
slouken@1361
    79
slouken@1361
    80
int SDL_SYS_StartTimer(void)
slouken@1361
    81
{
slouken@1361
    82
	SDL_SetError("Internal logic error: threaded timer in use");
slouken@1361
    83
	return(-1);
slouken@1361
    84
}
slouken@1361
    85
slouken@1361
    86
void SDL_SYS_StopTimer(void)
slouken@1361
    87
{
slouken@1361
    88
	return;
slouken@1361
    89
}
slouken@1635
    90
slouken@1635
    91
#endif /* SDL_TIMER_DUMMY || SDL_TIMERS_DISABLED */