sergiotarxz/nuttx-apps
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

apps/examples/ostest: Sample errno on returns from sem_timedwait(). Otherwise, intervening system calls my change the value of the reported errno. Noted by Juha Niskanen

Browse Source
This commit is contained in:
Gregory Nutt 2015-02-19 08:41:15 -06:00
parent 8d7952d55a
commit 1d369fb376
1 changed files with 8 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

13
examples/ostest/semtimed.c
View File

@ -1,7 +1,7 @@
/***********************************************************************
* apps/examples/ostest/semtimed.c
*
* Copyright (C) 2014 Gregory Nutt. All rights reserved.
* Copyright (C) 2014-2015 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <gnutt@nuttx.org>
*
* Redistribution and use in source and binary forms, with or without
@ -92,6 +92,7 @@ void semtimed_test(void)
int prio_min;
int prio_max;
int prio_mid;
int errcode;
pthread_attr_t attr;
int status;
@ -106,7 +107,9 @@ void semtimed_test(void)
abstime.tv_nsec = before.tv_nsec;
printf("semtimed_test: Waiting for two second timeout\n");
status = sem_timedwait(&sem, &abstime);
status = sem_timedwait(&sem, &abstime);
errcode = errno;
(void)clock_gettime(CLOCK_REALTIME, &after);
if (status == OK)
@ -115,7 +118,6 @@ void semtimed_test(void)
}
else
{
int errcode = errno;
if (errcode == ETIMEDOUT)
{
printf("samwait_test: PASS\n");
@ -192,12 +194,13 @@ void semtimed_test(void)
abstime.tv_nsec = before.tv_nsec;
printf("semtimed_test: Waiting for two second timeout\n");
status = sem_timedwait(&sem, &abstime);
status = sem_timedwait(&sem, &abstime);
errcode = errno;
(void)clock_gettime(CLOCK_REALTIME, &after);
if (status < 0)
{
int errcode = errno;
printf("semtimed_test: ERROR: sem_timedwait failed with: %d\n", errcode);
}
else