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Diffstat (limited to 'nuttx/examples/nxflat/tests/mutex/mutex.c')
| -rw-r--r-- | nuttx/examples/nxflat/tests/mutex/mutex.c | 149 |
1 files changed, 0 insertions, 149 deletions
diff --git a/nuttx/examples/nxflat/tests/mutex/mutex.c b/nuttx/examples/nxflat/tests/mutex/mutex.c deleted file mode 100644 index 78a63306d..000000000 --- a/nuttx/examples/nxflat/tests/mutex/mutex.c +++ /dev/null @@ -1,149 +0,0 @@ -/**************************************************************************** - * examples/nxflat/tests/mutex/mutex.c - * - * Copyright (C) 2009 Gregory Nutt. All rights reserved. - * Author: Gregory Nutt <spudmonkey@racsa.co.cr> - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in - * the documentation and/or other materials provided with the - * distribution. - * 3. Neither the name NuttX nor the names of its contributors may be - * used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS - * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE - * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, - * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, - * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS - * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED - * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN - * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE - * POSSIBILITY OF SUCH DAMAGE. - * - ****************************************************************************/ - -/**************************************************************************** - * Included Files - ****************************************************************************/ - -#include <stdbool.h> -#include <stdio.h> -#include <stdlib.h> -#include <unistd.h> -#include <pthread.h> - -/**************************************************************************** - * Private Data - ****************************************************************************/ - -static pthread_mutex_t mut; -static volatile int my_mutex = 0; -static unsigned long nloops[2] = {0, 0}; -static unsigned long nerrors[2] = {0, 0}; -static volatile bool bendoftest; - -/**************************************************************************** - * Private Functions - ****************************************************************************/ - -/* NOTE: it is necessary for functions that are referred to by function pointers - * pointer to be declared with global scope (at least for ARM). Otherwise, - * a relocation type that is not supported by NXFLAT is generated by GCC. - */ - -void thread_func(void *parameter) -{ - int my_id = (int)parameter; - int my_ndx = my_id - 1; - int i; - - /* Loop 20 times. There is a 100 MS delay in the loop so this should - * take about 2 seconds. The main thread will stop this thread after - * 2 seconds by setting bendoftest in any event. - */ - - for (i = 0; i < 20 && !bendoftest; i++); - { - if ((pthread_mutex_lock(&mut)) != 0) - { - printf("ERROR thread %d: pthread_mutex_lock failed\n", my_id); - } - - if (my_mutex == 1) - { - printf("ERROR thread=%d: " - "my_mutex should be zero, instead my_mutex=%d\n", - my_id, my_mutex); - nerrors[my_ndx]++; - } - - my_mutex = 1; - usleep(100000); - my_mutex = 0; - - if ((pthread_mutex_unlock(&mut)) != 0) - { - printf("ERROR thread %d: pthread_mutex_unlock failed\n", my_id); - } - - nloops[my_ndx]++; - } -} - -/**************************************************************************** - * Public Functions - ****************************************************************************/ - -int main(int argc, char **argv) -{ - pthread_t thread1; - pthread_t thread2; - - /* Initialize the mutex */ - - pthread_mutex_init(&mut, NULL); - - /* Start two thread instances */ - - printf("Starting thread 1\n"); - bendoftest = false; - if ((pthread_create(&thread1, NULL, (void*)thread_func, (void*)1)) != 0) - { - fprintf(stderr, "Error in thread#1 creation\n"); - } - - printf("Starting thread 2\n"); - if ((pthread_create(&thread2, NULL, (void*)thread_func, (void*)2)) != 0) - { - fprintf(stderr, "Error in thread#2 creation\n"); - } - - /* Wait a bit for the threads to do their thing. */ - - sleep(2); - - /* Then ask them politely to stop running */ - - printf("Stopping threads\n"); - bendoftest = true; - pthread_join(thread1, NULL); - pthread_join(thread2, NULL); - - printf("\tThread1\tThread2\n"); - printf("Loops\t%ld\t%ld\n", nloops[0], nloops[1]); - printf("Errors\t%ld\t%ld\n", nerrors[0], nerrors[1]); - - return 0; -} - |