[rtems commit] Fix and extend error message in posix timer test

[Joel Sherrill]

Module:    rtems
Branch:    master
Commit:    baee0dc5a362a3f75343ce3a43779afcb1f4fc57
Changeset: http://git.rtems.org/rtems/commit/?id=baee0dc5a362a3f75343ce3a43779afcb1f4fc57

Author:    Martin Erik Werner <martinerikwerner.aac at gmail.com>
Date:      Tue May 15 11:21:55 2018 +0200

Fix and extend error message in posix timer test

_Timespec_Equal_to() does not set errno, hence avoid using perror(),
instead use fprintf() to stderr, and extend the error message to provide
information about what the error is (measured timer value after
re-arming is not equal to the configured interval), and how large of a
difference was measured.

Signed-off-by: Martin Erik Werner <martin.werner at aacmicrotec.com>

---

 testsuites/psxtests/psxtimer01/psxtimer.c | 14 ++++++++++++--
 1 file changed, 12 insertions(+), 2 deletions(-)

diff --git a/testsuites/psxtests/psxtimer01/psxtimer.c b/testsuites/psxtests/psxtimer01/psxtimer.c
index 032e9f8..6ec049a 100644
--- a/testsuites/psxtests/psxtimer01/psxtimer.c
+++ b/testsuites/psxtests/psxtimer01/psxtimer.c
@@ -143,7 +143,12 @@ void * task_a (void *arg)
        rtems_test_exit(0);
      }
      if (! _Timespec_Equal_to( &timerdata.it_value, &my_period )){
-       perror ("Error in Task A timer_gettime\n");
+       fprintf(
+           stderr, "Error in Task A timer_gettime:\n"
+           "  re-armed timer: %" PRIdtime_t ":%ld does not match interval: %" PRIdtime_t ":%ld\n",
+           timerdata.it_value.tv_sec, timerdata.it_value.tv_nsec,
+           my_period.tv_sec, my_period.tv_nsec
+      );
      }
      clock = time(NULL);
      printf("Executing task A with count = %2i %s", params->count, ctime(&clock));
@@ -291,7 +296,12 @@ void * task_c (void *arg)
        rtems_test_exit(0);
      }
      if (! _Timespec_Equal_to( &timerdata.it_value, &my_period) ){
-       perror ("Error in Task C timer_gettime\n");
+       fprintf(
+           stderr, "Error in Task A timer_gettime:\n"
+           "  re-armed timer: %" PRIdtime_t ":%ld does not match interval: %" PRIdtime_t ":%ld\n",
+           timerdata.it_value.tv_sec, timerdata.it_value.tv_nsec,
+           my_period.tv_sec, my_period.tv_nsec
+       );
      }
      pthread_mutex_lock (&data.mutex);
      while (data.updated == FALSE) {