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src/timer/dummy/SDL_systimer.c
author Sam Lantinga
Sun, 28 May 2006 13:04:16 +0000
branchSDL-1.3
changeset 1662 782fd950bd46
parent 1635 92947e3a18db
child 1668 4da1ee79c9af
permissions -rw-r--r--
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.

WARNING: None of the video drivers have been updated for the new API yet! The API is still under design and very fluid.

The code is now run through a consistent indent format:
indent -i4 -nut -nsc -br -ce

The headers are being converted to automatically generate doxygen documentation. 
     1 /*

     2     SDL - Simple DirectMedia Layer

     3     Copyright (C) 1997-2006 Sam Lantinga

     4 

     5     This library is free software; you can redistribute it and/or

     6     modify it under the terms of the GNU Lesser General Public

     7     License as published by the Free Software Foundation; either

     8     version 2.1 of the License, or (at your option) any later version.

     9 

    10     This library is distributed in the hope that it will be useful,

    11     but WITHOUT ANY WARRANTY; without even the implied warranty of

    12     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

    13     Lesser General Public License for more details.

    14 

    15     You should have received a copy of the GNU Lesser General Public

    16     License along with this library; if not, write to the Free Software

    17     Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA

    18 

    19     Sam Lantinga

    20     slouken@libsdl.org

    21 */

    22 #include "SDL_config.h"

    23 

    24 #if defined(SDL_TIMER_DUMMY) || defined(SDL_TIMERS_DISABLED)

    25 

    26 #include "SDL_timer.h"

    27 #include "../SDL_timer_c.h"

    28 

    29 void

    30 SDL_StartTicks (void)

    31 {

    32 }

    33 

    34 Uint32

    35 SDL_GetTicks (void)

    36 {

    37     SDL_Unsupported ();

    38     return 0;

    39 }

    40 

    41 void

    42 SDL_Delay (Uint32 ms)

    43 {

    44     SDL_Unsupported ();

    45 }

    46 

    47 #include "SDL_thread.h"

    48 

    49 /* Data to handle a single periodic alarm */

    50 static int timer_alive = 0;

    51 static SDL_Thread *timer = NULL;

    52 

    53 static int

    54 RunTimer (void *unused)

    55 {

    56     while (timer_alive) {

    57         if (SDL_timer_running) {

    58             SDL_ThreadedTimerCheck ();

    59         }

    60         SDL_Delay (1);

    61     }

    62     return (0);

    63 }

    64 

    65 /* This is only called if the event thread is not running */

    66 int

    67 SDL_SYS_TimerInit (void)

    68 {

    69     timer_alive = 1;

    70     timer = SDL_CreateThread (RunTimer, NULL);

    71     if (timer == NULL)

    72         return (-1);

    73     return (SDL_SetTimerThreaded (1));

    74 }

    75 

    76 void

    77 SDL_SYS_TimerQuit (void)

    78 {

    79     timer_alive = 0;

    80     if (timer) {

    81         SDL_WaitThread (timer, NULL);

    82         timer = NULL;

    83     }

    84 }

    85 

    86 int

    87 SDL_SYS_StartTimer (void)

    88 {

    89     SDL_SetError ("Internal logic error: threaded timer in use");

    90     return (-1);

    91 }

    92 

    93 void

    94 SDL_SYS_StopTimer (void)

    95 {

    96     return;

    97 }

    98 

    99 #endif /* SDL_TIMER_DUMMY || SDL_TIMERS_DISABLED */

   100 /* vi: set ts=4 sw=4 expandtab: */
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