From: gowrishankar <[email protected]> Instead of lock/unlock of mutex to burn cpu cycles, we can use busy_work_ms from librttest which is more explicit (burn cycles, not provide some synchronization).
Also this patch removes the id increment since it is not used. Signed-off-by: Gowrishankar <[email protected]> Tested-by: Gowrishankar <[email protected]> Acked-by: Darren Hart <[email protected]> --- testcases/realtime/func/pi-tests/testpi-4.c | 24 ++++++------------------ 1 files changed, 6 insertions(+), 18 deletions(-) diff --git a/testcases/realtime/func/pi-tests/testpi-4.c b/testcases/realtime/func/pi-tests/testpi-4.c index 0960c91..5a39701 100644 --- a/testcases/realtime/func/pi-tests/testpi-4.c +++ b/testcases/realtime/func/pi-tests/testpi-4.c @@ -81,7 +81,7 @@ pthread_mutex_t *glob_mutex; void *func_nonrt(void *arg) { struct thread *pthr = (struct thread *)arg; - int i, j, tid = gettid(); + int i, tid = gettid(); printf("Thread %d started running with priority %d\n", tid, pthr->priority); @@ -96,11 +96,7 @@ void *func_nonrt(void *arg) tid, i, pthr->policy, pthr->priority); fflush(NULL); } - pthr->id++; - for (j = 0; j < 5000; j++) { - pthread_mutex_lock(&(pthr->mutex)); - pthread_mutex_unlock(&(pthr->mutex)); - } + busy_work_ms(1); } pthread_mutex_unlock(glob_mutex); return NULL; @@ -109,7 +105,7 @@ void *func_nonrt(void *arg) void *func_rt(void *arg) { struct thread *pthr = (struct thread *)arg; - int i, j, tid = gettid(); + int i, tid = gettid(); printf("Thread %d started running with prio %d\n", tid, pthr->priority); @@ -129,11 +125,7 @@ void *func_rt(void *arg) tid, i, pthr->policy, pthr->priority); fflush(NULL); } - pthr->id++; - for (j = 0; j < 5000; j++) { - pthread_mutex_lock(&(pthr->mutex)); - pthread_mutex_unlock(&(pthr->mutex)); - } + busy_work_ms(1); } pthread_mutex_unlock(glob_mutex); return NULL; @@ -142,7 +134,7 @@ void *func_rt(void *arg) void *func_noise(void *arg) { struct thread *pthr = (struct thread *)arg; - int i, j, tid = gettid(); + int i, tid = gettid(); printf("Noise Thread started running with prio %d\n", pthr->priority); @@ -155,11 +147,7 @@ void *func_noise(void *arg) pthr->priority); fflush(NULL); } - pthr->id++; - for (j = 0; j < 5000; j++) { - pthread_mutex_lock(&(pthr->mutex)); - pthread_mutex_unlock(&(pthr->mutex)); - } + busy_work_ms(1); } return NULL; } -- 1.7.1 ------------------------------------------------------------------------------ This SF.net email is sponsored by Sprint What will you do first with EVO, the first 4G phone? Visit sprint.com/first -- http://p.sf.net/sfu/sprint-com-first _______________________________________________ Ltp-list mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/ltp-list
