sdl

FORK: Simple Directmedia Layer
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SDL_systimer.c (1672B)

      1 /*
      2   Simple DirectMedia Layer
      3   Copyright (C) 1997-2020 Sam Lantinga <slouken@libsdl.org>
      4 
      5   This software is provided 'as-is', without any express or implied
      6   warranty.  In no event will the authors be held liable for any damages
      7   arising from the use of this software.
      8 
      9   Permission is granted to anyone to use this software for any purpose,
     10   including commercial applications, and to alter it and redistribute it
     11   freely, subject to the following restrictions:
     12 
     13   1. The origin of this software must not be misrepresented; you must not
     14      claim that you wrote the original software. If you use this software
     15      in a product, an acknowledgment in the product documentation would be
     16      appreciated but is not required.
     17   2. Altered source versions must be plainly marked as such, and must not be
     18      misrepresented as being the original software.
     19   3. This notice may not be removed or altered from any source distribution.
     20 */
     21 #include "../../SDL_internal.h"
     22 
     23 #if defined(SDL_TIMER_DUMMY) || defined(SDL_TIMERS_DISABLED)
     24 
     25 #include "SDL_timer.h"
     26 
     27 static SDL_bool ticks_started = SDL_FALSE;
     28 
     29 void
     30 SDL_TicksInit(void)
     31 {
     32     if (ticks_started) {
     33         return;
     34     }
     35     ticks_started = SDL_TRUE;
     36 }
     37 
     38 void
     39 SDL_TicksQuit(void)
     40 {
     41     ticks_started = SDL_FALSE;
     42 }
     43 
     44 Uint32
     45 SDL_GetTicks(void)
     46 {
     47     if (!ticks_started) {
     48         SDL_TicksInit();
     49     }
     50 
     51     SDL_Unsupported();
     52     return 0;
     53 }
     54 
     55 Uint64
     56 SDL_GetPerformanceCounter(void)
     57 {
     58     return SDL_GetTicks();
     59 }
     60 
     61 Uint64
     62 SDL_GetPerformanceFrequency(void)
     63 {
     64     return 1000;
     65 }
     66 
     67 void
     68 SDL_Delay(Uint32 ms)
     69 {
     70     SDL_Unsupported();
     71 }
     72 
     73 #endif /* SDL_TIMER_DUMMY || SDL_TIMERS_DISABLED */
     74 
     75 /* vi: set ts=4 sw=4 expandtab: */