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testatomic.c
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testatomic.c
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#include <stdio.h>
#include "SDL.h"
/*
Absolutely basic tests just to see if we get the expected value
after calling each function.
*/
char *
tf(SDL_bool tf)
{
static char *t = "TRUE";
static char *f = "FALSE";
if (tf)
{
return t;
}
return f;
}
int
main(int argc, char *argv[])
{
int value;
SDL_SpinLock lock = 0;
SDL_bool tfret = SDL_FALSE;
printf("\nspin lock---------------------------------------\n\n");
SDL_AtomicLock(&lock);
printf("AtomicLock lock=%d\n", lock);
SDL_AtomicUnlock(&lock);
printf("AtomicUnlock lock=%d\n", lock);
printf("\natomic -----------------------------------------\n\n");
SDL_atomic_t v;
SDL_AtomicSet(&v, 0);
tfret = SDL_AtomicSet(&v, 10) == 0;
printf("AtomicSet(10) tfret=%s val=%"PRIu32"\n", tf(tfret), SDL_AtomicGet(&v));
tfret = SDL_AtomicAdd(&v, 10) == 10;
printf("AtomicAdd(10) tfret=%s val=%"PRIu32"\n", tf(tfret), SDL_AtomicGet(&v));
SDL_AtomicSet(&v, 0);
SDL_AtomicIncRef(&v);
tfret = (SDL_AtomicGet(&v) == 1);
printf("AtomicIncRef() tfret=%s val=%"PRIu32"\n", tf(tfret), SDL_AtomicGet(&v));
SDL_AtomicIncRef(&v);
tfret = (SDL_AtomicGet(&v) == 2);
printf("AtomicIncRef() tfret=%s val=%"PRIu32"\n", tf(tfret), SDL_AtomicGet(&v));
tfret = (SDL_AtomicDecRef(&v) == SDL_FALSE);
printf("AtomicDecRef() tfret=%s val=%"PRIu32"\n", tf(tfret), SDL_AtomicGet(&v));
tfret = (SDL_AtomicDecRef(&v) == SDL_TRUE);
printf("AtomicDecRef() tfret=%s val=%"PRIu32"\n", tf(tfret), SDL_AtomicGet(&v));
SDL_AtomicSet(&v, 10);
tfret = (SDL_AtomicCAS(&v, 0, 20) != 0);
printf("AtomicCAS() tfret=%s val=%"PRIu32"\n", tf(tfret), SDL_AtomicGet(&v));
value = SDL_AtomicGet(&v);
tfret = (SDL_AtomicCAS(&v, value, 20) == value);
printf("AtomicCAS() tfret=%s val=%"PRIu32"\n", tf(tfret), SDL_AtomicGet(&v));
return 0;
}