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Added SDL_AddTimerNS()

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This commit is contained in:
Sam Lantinga
2024-05-27 06:30:37 -07:00
parent b6360516e4
commit 99599d9236
6 changed files with 152 additions and 24 deletions
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52
test/testtimer.c
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@@ -56,6 +56,13 @@ ticktock(void *param, SDL_TimerID timerID, Uint32 interval)
return interval;
}
static Uint64 SDLCALL
ticktockNS(void *param, SDL_TimerID timerID, Uint64 interval)
{
++ticks;
return interval;
}
static Uint32 SDLCALL
callback(void *param, SDL_TimerID timerID, Uint32 interval)
{
@@ -136,25 +143,49 @@ int main(int argc, char *argv[])
}
}
/* Start the timer */
/* Start the millisecond timer */
if (desired < 0) {
desired = DEFAULT_RESOLUTION;
}
ticks = 0;
t1 = SDL_AddTimer(desired, ticktock, NULL);
/* Wait 10 seconds */
SDL_Log("Waiting 10 seconds\n");
SDL_Delay(10 * 1000);
/* Wait 1 seconds */
SDL_Log("Waiting 1 seconds for millisecond timer\n");
SDL_Delay(1 * 1000);
/* Stop the timer */
SDL_RemoveTimer(t1);
/* Print the results */
if (ticks) {
SDL_Log("Timer resolution: desired = %d ms, actual = %f ms\n",
SDL_Log("Millisecond timer resolution: desired = %d ms, actual = %f ms\n",
desired, (double)(10 * 1000) / ticks);
}
/* Wait for the results to be seen */
SDL_Delay(1 * 1000);
/* Start the nanosecond timer */
ticks = 0;
t1 = SDL_AddTimerNS(desired, ticktockNS, NULL);
/* Wait 1 seconds */
SDL_Log("Waiting 1 seconds for nanosecond timer\n");
SDL_Delay(1 * 1000);
/* Stop the timer */
SDL_RemoveTimer(t1);
/* Print the results */
if (ticks) {
SDL_Log("Nanosecond timer resolution: desired = %d ns, actual = %f ns\n",
desired, (double)(10 * 1000000) / ticks);
}
/* Wait for the results to be seen */
SDL_Delay(1 * 1000);
/* Test multiple timers */
SDL_Log("Testing multiple timers...\n");
t1 = SDL_AddTimer(100, callback, (void *)1);
@@ -170,18 +201,19 @@ int main(int argc, char *argv[])
SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Could not create timer 3: %s\n", SDL_GetError());
}
/* Wait 10 seconds */
SDL_Log("Waiting 10 seconds\n");
SDL_Delay(10 * 1000);
/* Wait 3 seconds */
SDL_Log("Waiting 3 seconds\n");
SDL_Delay(3 * 1000);
SDL_Log("Removing timer 1 and waiting 5 more seconds\n");
SDL_Log("Removing timer 1 and waiting 3 more seconds\n");
SDL_RemoveTimer(t1);
SDL_Delay(5 * 1000);
SDL_Delay(3 * 1000);
SDL_RemoveTimer(t2);
SDL_RemoveTimer(t3);
ticks = 0;
start_perf = SDL_GetPerformanceCounter();
for (i = 0; i < 1000000; ++i) {
ticktock(NULL, 0, 0);