267 lines
7.5 KiB
C
267 lines
7.5 KiB
C
/****************************************************************************
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* examples/ostest/posixtimer.c
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*
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* Copyright (C) 2007-2009, 2011, 2016 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <gnutt@nuttx.org>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <stdio.h>
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#include <unistd.h>
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#include <semaphore.h>
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#include <signal.h>
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#include <sched.h>
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#include <errno.h>
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#include "ostest.h"
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/****************************************************************************
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* Private Definitions
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****************************************************************************/
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#ifndef NULL
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# define NULL (void*)0
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#endif
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#define MY_TIMER_SIGNAL 17
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#define SIGVALUE_INT 42
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/****************************************************************************
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* Private Data
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****************************************************************************/
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static sem_t sem;
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static int g_nsigreceived = 0;
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/****************************************************************************
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* Private Functions
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****************************************************************************/
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static void timer_expiration(int signo, siginfo_t *info, void *ucontext)
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{
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sigset_t oldset;
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sigset_t allsigs;
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int status;
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printf("timer_expiration: Received signal %d\n" , signo);
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g_nsigreceived++;
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/* Check signo */
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if (signo != MY_TIMER_SIGNAL)
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{
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printf("timer_expiration: ERROR expected signo=%d\n" , MY_TIMER_SIGNAL);
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}
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/* Check siginfo */
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if (info->si_value.sival_int != SIGVALUE_INT)
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{
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printf("timer_expiration: ERROR sival_int=%d expected %d\n",
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info->si_value.sival_int, SIGVALUE_INT);
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}
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else
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{
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printf("timer_expiration: sival_int=%d\n" , info->si_value.sival_int);
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}
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if (info->si_signo != MY_TIMER_SIGNAL)
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{
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printf("timer_expiration: ERROR expected si_signo=%d, got=%d\n",
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MY_TIMER_SIGNAL, info->si_signo);
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}
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if (info->si_code == SI_TIMER)
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{
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printf("timer_expiration: si_code=%d (SI_TIMER)\n" , info->si_code);
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}
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else
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{
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printf("timer_expiration: ERROR si_code=%d, expected SI_TIMER=%d\n",
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info->si_code, SI_TIMER);
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}
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/* Check ucontext_t */
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printf("timer_expiration: ucontext=%p\n" , ucontext);
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/* Check sigprocmask */
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(void)sigfillset(&allsigs);
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status = sigprocmask(SIG_SETMASK, NULL, &oldset);
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if (status != OK)
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{
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printf("timer_expiration: ERROR sigprocmask failed, status=%d\n",
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status);
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}
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if (oldset != allsigs)
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{
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printf("timer_expiration: ERROR sigprocmask=%x expected=%x\n",
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oldset, allsigs);
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}
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}
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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void timer_test(void)
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{
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sigset_t set;
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struct sigaction act;
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struct sigaction oact;
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struct sigevent notify;
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struct itimerspec timer;
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timer_t timerid;
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int status;
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int i;
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printf("timer_test: Initializing semaphore to 0\n" );
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sem_init(&sem, 0, 0);
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/* Start waiter thread */
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printf("timer_test: Unmasking signal %d\n" , MY_TIMER_SIGNAL);
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(void)sigemptyset(&set);
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(void)sigaddset(&set, MY_TIMER_SIGNAL);
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status = sigprocmask(SIG_UNBLOCK, &set, NULL);
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if (status != OK)
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{
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printf("timer_test: ERROR sigprocmask failed, status=%d\n",
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status);
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}
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printf("timer_test: Registering signal handler\n" );
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act.sa_sigaction = timer_expiration;
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act.sa_flags = SA_SIGINFO;
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(void)sigfillset(&act.sa_mask);
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(void)sigdelset(&act.sa_mask, MY_TIMER_SIGNAL);
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status = sigaction(MY_TIMER_SIGNAL, &act, &oact);
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if (status != OK)
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{
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printf("timer_test: ERROR sigaction failed, status=%d\n" , status);
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}
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#ifndef SDCC
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printf("timer_test: oact.sigaction=%p oact.sa_flags=%x oact.sa_mask=%x\n",
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oact.sa_sigaction, oact.sa_flags, oact.sa_mask);
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#endif
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/* Create the POSIX timer */
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printf("timer_test: Creating timer\n" );
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notify.sigev_notify = SIGEV_SIGNAL;
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notify.sigev_signo = MY_TIMER_SIGNAL;
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notify.sigev_value.sival_int = SIGVALUE_INT;
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#ifdef CONFIG_SIG_EVTHREAD
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notify.sigev_notify_function = NULL;
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notify.sigev_notify_attributes = NULL;
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#endif
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status = timer_create(CLOCK_REALTIME, ¬ify, &timerid);
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if (status != OK)
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{
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printf("timer_test: timer_create failed, errno=%d\n", errno);
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goto errorout;
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}
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/* Start the POSIX timer */
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printf("timer_test: Starting timer\n" );
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timer.it_value.tv_sec = 2;
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timer.it_value.tv_nsec = 0;
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timer.it_interval.tv_sec = 2;
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timer.it_interval.tv_nsec = 0;
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status = timer_settime(timerid, 0, &timer, NULL);
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if (status != OK)
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{
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printf("timer_test: timer_settime failed, errno=%d\n", errno);
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goto errorout;
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}
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/* Take the semaphore */
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for (i = 0; i < 5; i++)
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{
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printf("timer_test: Waiting on semaphore\n" );
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FFLUSH();
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status = sem_wait(&sem);
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if (status != 0)
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{
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int error = errno;
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if (error == EINTR)
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{
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printf("timer_test: sem_wait() successfully interrupted by signal\n" );
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}
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else
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{
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printf("timer_test: ERROR sem_wait failed, errno=%d\n" , error);
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}
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}
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else
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{
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printf("timer_test: ERROR awakened with no error!\n" );
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}
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printf("timer_test: g_nsigreceived=%d\n", g_nsigreceived);
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}
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errorout:
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sem_destroy(&sem);
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/* Then delete the timer */
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printf("timer_test: Deleting timer\n" );
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status = timer_delete(timerid);
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if (status != OK)
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{
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printf("timer_test: timer_create failed, errno=%d\n", errno);
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}
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/* Detach the signal handler */
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act.sa_handler = SIG_DFL;
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status = sigaction(MY_TIMER_SIGNAL, &act, &oact);
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printf("timer_test: done\n" );
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FFLUSH();
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}
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