int main()
{
wfg_t wfg;
wfg_init(&wfg);
wfg_print_graph(&wfg);
printf("-\n");
wfg_add_wait_edge(&wfg, 2, 1);
wfg_print_graph(&wfg);
printf("-\n");
/* 2 -> r1 */
wfg_add_hold_edge(&wfg, 2, 1);
wfg_print_graph(&wfg);
printf("-\n");
/* r1 -> 2 */
wfg_add_wait_edge(&wfg, 1, 2);
wfg_print_graph(&wfg);
printf("-\n");
/* r1 -> 2, 1 -> r2 */
wfg_add_hold_edge(&wfg, 1, 2);
wfg_print_graph(&wfg);
printf("-\n");
/* r1 -> 2, r2 -> 1 */
wfg_add_wait_edge(&wfg, 2, 2);
wfg_print_graph(&wfg);
printf("-\n");
/* r1 -> 2, r2 -> 1, 2 -> r2 */
/* r1 -> 2 -> r2 -> 1 */
wfg_add_wait_edge(&wfg, 1, 1);
wfg_print_graph(&wfg);
unsigned int *cycle;
int size = wfg_get_cycle(&wfg,&cycle);
int i;
for(i=0;i<size;i++)
{
printf("%u->",cycle[i]);
}
printf("\n");
printf("-\n");
free(cycle);
/* r1 -> 2 -> r2 -> 1 -> r1 */
wfg_remove_edge(&wfg, 1, 1);
wfg_print_graph(&wfg);
size = wfg_get_cycle(&wfg,&cycle);
printf("size: %d\n",size);
printf("-\n");
wfg_destroy(&wfg);
return 0;
}
/**
* Set the mode of the deadlock resilient mutex.
*
* This function will only be called once, before any of the other libdrm
* functions. This functions sets the global state of all drm mutexes.
*
* @param mode
* One of the following deadlock resilient modes:
* - NO_DEADLOCK_CHECKING
* - DEADLOCK_PREVENTION
* - DEADLOCK_DETECTION
* - DEADLOCK_AVOIDANCE
*/
void drm_setmode(enum drmmode_t mode)
{
lockGraph=malloc(sizeof(wfg_t));
wfg_init(lockGraph);
mMode=mode;
return;
}