156 lines
4.3 KiB
C
156 lines
4.3 KiB
C
/****************************************************************************
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* apps/testing/ostest/mutex.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 <stdio.h>
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#include <pthread.h>
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#include "ostest.h"
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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#define NLOOPS 32
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/****************************************************************************
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* Private Data
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****************************************************************************/
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static pthread_mutex_t mut;
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static volatile int my_mutex = 0;
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static unsigned long nloops[2] =
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{
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0,
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0
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};
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static unsigned long nerrors[2] =
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{
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0,
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0
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};
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/****************************************************************************
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* Private Functions
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****************************************************************************/
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static void *thread_func(FAR void *parameter)
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{
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int id = (int)((intptr_t)parameter);
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int ndx = id - 1;
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int i;
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for (nloops[ndx] = 0; nloops[ndx] < NLOOPS; nloops[ndx]++)
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{
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int status = pthread_mutex_lock(&mut);
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if (status != 0)
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{
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printf("ERROR thread %d: pthread_mutex_lock failed, status=%d\n",
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id, status);
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}
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if (my_mutex == 1)
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{
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printf("ERROR thread=%d: "
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"my_mutex should be zero, instead my_mutex=%d\n",
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id, my_mutex);
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nerrors[ndx]++;
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}
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my_mutex = 1;
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for (i = 0; i < 10; i++)
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{
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pthread_yield();
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}
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my_mutex = 0;
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status = pthread_mutex_unlock(&mut);
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if (status != 0)
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{
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printf("ERROR thread %d: pthread_mutex_unlock failed, status=%d\n",
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id, status);
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}
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}
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pthread_exit(NULL);
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return NULL; /* Non-reachable -- needed for some compilers */
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}
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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void mutex_test(void)
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{
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pthread_t thread1;
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pthread_t thread2;
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#ifdef SDCC
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pthread_addr_t result1;
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pthread_addr_t result2;
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pthread_attr_t attr;
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#endif
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int status;
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/* Initialize the mutex */
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printf("Initializing mutex\n");
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pthread_mutex_init(&mut, NULL);
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/* Start two thread instances */
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printf("Starting thread 1\n");
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#ifdef SDCC
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pthread_attr_init(&attr);
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status = pthread_create(&thread1, &attr, thread_func, (pthread_addr_t)1);
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#else
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status = pthread_create(&thread1, NULL, thread_func, (pthread_addr_t)1);
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#endif
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if (status != 0)
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{
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printf("ERROR in thread#1 creation\n");
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}
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printf("Starting thread 2\n");
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#ifdef SDCC
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status = pthread_create(&thread2, &attr, thread_func, (pthread_addr_t)2);
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#else
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status = pthread_create(&thread2, NULL, thread_func, (pthread_addr_t)2);
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#endif
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if (status != 0)
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{
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printf("ERROR in thread#2 creation\n");
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}
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#ifdef SDCC
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pthread_join(thread1, &result1);
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pthread_join(thread2, &result2);
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#else
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pthread_join(thread1, NULL);
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pthread_join(thread2, NULL);
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#endif
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printf("\t\tThread1\tThread2\n");
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printf("\tLoops\t%lu\t%lu\n", nloops[0], nloops[1]);
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printf("\tErrors\t%lu\t%lu\n", nerrors[0], nerrors[1]);
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}
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