136 lines
3.5 KiB
C
136 lines
3.5 KiB
C
/****************************************************************************
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* apps/testing/ostest/suspend.c
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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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 <assert.h>
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#include <errno.h>
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#include <sched.h>
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#include <semaphore.h>
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#include <signal.h>
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#include <stdbool.h>
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#include <stdio.h>
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#include <sys/types.h>
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#include <unistd.h>
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#include "ostest.h"
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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static int victim_main(int argc, char *argv[])
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{
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printf("victim_main: Victim started\n");
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for (; ; )
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{
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sleep(3);
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printf("victim_main: Wasting time\n");
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FFLUSH();
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}
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return 0; /* Won't get here */
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}
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void suspend_test(void)
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{
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struct sched_param param;
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pid_t victim;
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int ret;
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/* Start victim thread */
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printf("suspend_test: Starting victim task\n");
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ret = sched_getparam (0, ¶m);
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if (ret < 0)
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{
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printf("suspend_test: ERROR sched_getparam() failed\n");
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ASSERT(false);
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param.sched_priority = PTHREAD_DEFAULT_PRIORITY;
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}
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victim = task_create("victim", param.sched_priority,
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STACKSIZE, victim_main, NULL);
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if (victim == ERROR)
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{
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printf("suspend_test: ERROR failed to start victim_main\n");
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ASSERT(false);
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}
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else
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{
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printf("suspend_test: Started victim_main pid=%d\n", victim);
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}
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/* Wait a bit */
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printf("suspend_test: Is the victim saying anything?\n");
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FFLUSH();
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sleep(10);
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/* Then signal the victim thread. */
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printf("suspend_test: Signaling pid=%d with SIGSTOP\n", victim);
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ret = kill(victim, SIGSTOP);
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if (ret < 0)
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{
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printf("suspend_test: ERROR kill() failed\n");
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ASSERT(false);
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}
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printf("suspend_test: Is the victim still jabbering?\n");
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FFLUSH();
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sleep(10);
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printf("suspend_test: Signaling pid=%d with SIGCONT\n", victim);
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ret = kill(victim, SIGCONT);
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if (ret < 0)
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{
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printf("suspend_test: ERROR kill() failed\n");
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ASSERT(false);
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}
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printf("suspend_test: The victim should continue the rant.\n");
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FFLUSH();
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sleep(10);
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printf("suspend_test: Signaling pid=%d with SIGKILL\n", victim);
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ret = kill(victim, SIGKILL);
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if (ret < 0)
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{
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printf("suspend_test: ERROR kill() failed\n");
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ASSERT(false);
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}
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FFLUSH();
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sleep(1);
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ret = kill(victim, 0);
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if (ret >= 0)
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{
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printf("suspend_test: ERROR kill() on the dead victim succeeded!\n");
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ASSERT(false);
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}
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printf("suspend_test: done\n");
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FFLUSH();
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}
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