/* Shutdown:
*/
void lp_rast_destroy( struct lp_rasterizer *rast )
{
unsigned i;
/* Set exit_flag and signal each thread's work_ready semaphore.
* Each thread will be woken up, notice that the exit_flag is set and
* break out of its main loop. The thread will then exit.
*/
rast->exit_flag = TRUE;
for (i = 0; i < rast->num_threads; i++) {
pipe_semaphore_signal(&rast->tasks[i].work_ready);
}
/* Wait for threads to terminate before cleaning up per-thread data */
for (i = 0; i < rast->num_threads; i++) {
pipe_thread_wait(rast->threads[i]);
}
/* Clean up per-thread data */
for (i = 0; i < rast->num_threads; i++) {
pipe_semaphore_destroy(&rast->tasks[i].work_ready);
pipe_semaphore_destroy(&rast->tasks[i].work_done);
}
/* for synchronizing rasterization threads */
pipe_barrier_destroy( &rast->barrier );
lp_scene_queue_destroy(rast->full_scenes);
FREE(rast);
}
/* Shutdown:
*/
void lp_rast_destroy( struct lp_rasterizer *rast )
{
unsigned i;
/* Set exit_flag and signal each thread's work_ready semaphore.
* Each thread will be woken up, notice that the exit_flag is set and
* break out of its main loop. The thread will then exit.
*/
rast->exit_flag = TRUE;
for (i = 0; i < rast->num_threads; i++) {
pipe_semaphore_signal(&rast->tasks[i].work_ready);
}
/* Wait for threads to terminate before cleaning up per-thread data.
* We don't actually call pipe_thread_wait to avoid dead lock on Windows
* per https://bugs.freedesktop.org/show_bug.cgi?id=76252 */
for (i = 0; i < rast->num_threads; i++) {
#ifdef _WIN32
pipe_semaphore_wait(&rast->tasks[i].work_done);
#else
thrd_join(rast->threads[i], NULL);
#endif
}
/* Clean up per-thread data */
for (i = 0; i < rast->num_threads; i++) {
pipe_semaphore_destroy(&rast->tasks[i].work_ready);
pipe_semaphore_destroy(&rast->tasks[i].work_done);
}
for (i = 0; i < MAX2(1, rast->num_threads); i++) {
align_free(rast->tasks[i].thread_data.cache);
}
/* for synchronizing rasterization threads */
if (rast->num_threads > 0) {
pipe_barrier_destroy( &rast->barrier );
}
lp_scene_queue_destroy(rast->full_scenes);
FREE(rast);
}
int main(int argc, char *argv[])
{
int i;
for (i = 1; i < argc; ++i) {
const char *arg = argv[i];
if (strcmp(arg, "-v") == 0) {
++verbosity;
} else {
fprintf(stderr, "error: unrecognized option `%s`\n", arg);
exit(EXIT_FAILURE);
}
}
// Disable buffering
setbuf(stdout, NULL);
LOG("pipe_barrier_test starting\n");
pipe_barrier_init(&barrier, NUM_THREADS);
for (i = 0; i < NUM_THREADS; i++) {
thread_ids[i] = i;
threads[i] = u_thread_create(thread_function, (void *) &thread_ids[i]);
}
for (i = 0; i < NUM_THREADS; i++ ) {
thrd_join(threads[i], NULL);
}
CHECK(p_atomic_read(&proceeded) == NUM_THREADS);
pipe_barrier_destroy(&barrier);
LOG("pipe_barrier_test exiting\n");
return 0;
}
int main()
{
int i;
printf("pipe_barrier_test starting\n");
pipe_barrier_init(&barrier, NUM_THREADS);
for (i = 0; i < NUM_THREADS; i++) {
thread_ids[i] = i;
threads[i] = pipe_thread_create(thread_function, (void *) &thread_ids[i]);
}
for (i = 0; i < NUM_THREADS; i++ ) {
pipe_thread_wait(threads[i]);
}
pipe_barrier_destroy(&barrier);
printf("pipe_barrier_test exiting\n");
return 0;
}
