diff options
Diffstat (limited to 'nptl/cond-perf.c')
| -rw-r--r-- | nptl/cond-perf.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/nptl/cond-perf.c b/nptl/cond-perf.c index 53d85637b8..e37914e6b7 100644 --- a/nptl/cond-perf.c +++ b/nptl/cond-perf.c @@ -4,6 +4,7 @@ #include <stdlib.h> #include <string.h> #include <unistd.h> +#include <atomic.h> static pthread_cond_t cond1 = PTHREAD_COND_INITIALIZER; static pthread_mutex_t mut1 = PTHREAD_MUTEX_INITIALIZER; @@ -23,7 +24,7 @@ cons (void *arg) do { - if (--ntogo == 0) + if (atomic_decrement_and_test (&ntogo)) { pthread_mutex_lock (&mut2); alldone = true; @@ -68,11 +69,11 @@ main (int argc, char *argv[]) pthread_t th[nthreads]; int i; - for (i = 0; i < nthreads; ++i) + for (i = 0; __builtin_expect (i < nthreads, 1); ++i) if (__builtin_expect ((err = pthread_create (&th[i], NULL, cons, (void *) (long) i)) != 0, 0)) printf ("pthread_create: %s\n", strerror (err)); - for (i = 0; i < nrounds; ++i) + for (i = 0; __builtin_expect (i < nrounds, 1); ++i) { pthread_mutex_lock (&mut2); while (! alldone) |