diff options
| -rw-r--r-- | test/thread_id.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/test/thread_id.c b/test/thread_id.c index 49e3710..e3cf42e 100644 --- a/test/thread_id.c +++ b/test/thread_id.c @@ -143,6 +143,7 @@ int pthread_barrier_wait(pthread_barrier_t *barrier) { int rc; + uint64_t threshold; if (barrier == NULL) return EINVAL; @@ -152,8 +153,14 @@ pthread_barrier_wait(pthread_barrier_t *barrier) rc = EINVAL; goto out; } + /* Compute the release `threshold`. All threads entering with count = 5 + * and `nentered` in [0, 4] should be released once `nentered` reaches 5: + * call 5 the release `threshold`. All threads entering with count = 5 + * and `nentered` in [5, 9] should be released once `nentered` reaches 10. + */ + threshold = (barrier->nentered / barrier->count + 1) * barrier->count; barrier->nentered++; - while (barrier->nentered % barrier->count != 0) { + while (barrier->nentered < threshold) { if ((rc = pthread_cond_wait(&barrier->cv, &barrier->mtx)) != 0) goto out; } |