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74 lines
1.7 KiB
74 lines
1.7 KiB
/* |
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* Copyright (C) 2014 Hamburg University of Applied Siences (HAW) |
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* |
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* This file is subject to the terms and conditions of the GNU Lesser |
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* General Public License v2.1. See the file LICENSE in the top level |
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* directory for more details. |
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*/ |
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/** |
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* @ingroup tests |
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* @{ |
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* |
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* @file |
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* @brief simple test application for atomic mutex unlocking and sleeping |
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* |
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* @author Martin Landsmann <martin.landsmann@haw-hamburg.de> |
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* |
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* @} |
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*/ |
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#include <stdio.h> |
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#include "thread.h" |
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#include "mutex.h" |
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static mutex_t mutex = MUTEX_INIT; |
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static volatile int indicator, count; |
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static kernel_pid_t main_pid; |
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static char stack[THREAD_STACKSIZE_MAIN]; |
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static void *second_thread(void *arg) |
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{ |
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(void) arg; |
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while (1) { |
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mutex_lock(&mutex); |
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thread_wakeup(main_pid); |
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indicator--; |
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mutex_unlock_and_sleep(&mutex); |
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} |
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return NULL; |
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} |
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int main(void) |
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{ |
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indicator = 0; |
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count = 0; |
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main_pid = thread_getpid(); |
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kernel_pid_t second_pid = thread_create(stack, |
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sizeof(stack), |
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THREAD_PRIORITY_MAIN - 1, |
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THREAD_CREATE_WOUT_YIELD | THREAD_CREATE_STACKTEST, |
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second_thread, |
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NULL, |
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"second_thread"); |
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while (1) { |
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mutex_lock(&mutex); |
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thread_wakeup(second_pid); |
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indicator++; |
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count++; |
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if (indicator > 1 || indicator < -1) { |
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printf("Error, threads did not sleep properly. [indicator: %d]\n", indicator); |
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return -1; |
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} |
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if ((count % 100000) == 0) { |
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printf("Still alive alternated [count: %dk] times.\n", count / 1000); |
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} |
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mutex_unlock_and_sleep(&mutex); |
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} |
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}
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