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Diffstat (limited to 'nuttx/examples/ostest/cancel.c')
-rw-r--r-- | nuttx/examples/ostest/cancel.c | 333 |
1 files changed, 0 insertions, 333 deletions
diff --git a/nuttx/examples/ostest/cancel.c b/nuttx/examples/ostest/cancel.c deleted file mode 100644 index bf2d03615..000000000 --- a/nuttx/examples/ostest/cancel.c +++ /dev/null @@ -1,333 +0,0 @@ -/*********************************************************************** - * examples/ostest/cancel.c - * - * Copyright (C) 2007-2009 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. - * - ***********************************************************************/ - -#include <stdio.h> -#include <time.h> -#include <pthread.h> -#include <errno.h> -#include "ostest.h" - -static pthread_mutex_t mutex; -static pthread_cond_t cond; - -static void *thread_waiter(void *parameter) -{ - int status; - - /* Take the mutex */ - - printf("thread_waiter: Taking mutex\n"); - status = pthread_mutex_lock(&mutex); - if (status != 0) - { - printf("thread_waiter: ERROR pthread_mutex_lock failed, status=%d\n", status); - } - - printf("thread_waiter: Starting wait for condition\n"); - - /* Are we a non-cancelable thread? Yes, set the non-cancelable state */ - - if (!parameter) - { - printf("thread_waiter: Setting non-cancelable\n"); - status = pthread_setcancelstate(PTHREAD_CANCEL_DISABLE, NULL); - if (status != 0) - { - printf("thread_waiter: ERROR pthread_setcancelstate failed, status=%d\n", status); - } - } - - /* The wait -- we will never awaken from this. */ - - status = pthread_cond_wait(&cond, &mutex); - if (status != 0) - { - printf("thread_waiter: ERROR pthread_cond_wait failed, status=%d\n", status); - } - - /* Release the mutex */ - - printf("thread_waiter: Releasing mutex\n"); - status = pthread_mutex_unlock(&mutex); - if (status != 0) - { - printf("thread_waiter: ERROR pthread_mutex_unlock failed, status=%d\n", status); - } - - /* Set the cancelable state */ - - printf("thread_waiter: Setting cancelable\n"); - status = pthread_setcancelstate(PTHREAD_CANCEL_ENABLE, NULL); - if (status != 0) - { - printf("thread_waiter: ERROR pthread_setcancelstate failed, status=%d\n", status); - } - - printf("thread_waiter: Exit with status 0x12345678\n"); - pthread_exit((pthread_addr_t)0x12345678); - return NULL; -} - -static void start_thread(pthread_t *waiter, int cancelable) -{ - pthread_attr_t attr; - int status; - - /* Initialize the mutex */ - - printf("start_thread: Initializing mutex\n"); - status = pthread_mutex_init(&mutex, NULL); - if (status != 0) - { - printf("start_thread: ERROR pthread_mutex_init failed, status=%d\n", status); - } - - /* Initialize the condition variable */ - - printf("start_thread: Initializing cond\n"); - status = pthread_cond_init(&cond, NULL); - if (status != 0) - { - printf("start_thread: ERROR pthread_cond_init failed, status=%d\n", status); - } - - /* Set up attributes */ - - status = pthread_attr_init(&attr); - if (status != 0) - { - printf("start_thread: pthread_attr_init failed, status=%d\n", status); - } - - status = pthread_attr_setstacksize(&attr, STACKSIZE); - if (status != 0) - { - printf("start_thread: pthread_attr_setstacksize failed, status=%d\n", status); - } - - /* Start the waiter thread */ - - printf("start_thread: Starting thread\n"); - status = pthread_create(waiter, &attr, thread_waiter, (pthread_addr_t)cancelable); - if (status != 0) - { - printf("start_thread: ERROR pthread_create failed, status=%d\n", status); - } - - /* Make sure that the waiter thread gets a chance to run */ - - printf("start_thread: Yielding\n"); - pthread_yield(); -} - -static void restart_thread(pthread_t *waiter, int cancelable) -{ - int status; - - /* Destroy the condition variable */ - - printf("restart_thread: Destroying cond\n"); - status = pthread_cond_destroy(&cond); - if (status != 0) - { - printf("restart_thread: ERROR pthread_cond_destroy failed, status=%d\n", status); - } - - /* Destroy the mutex */ - - printf("restart_thread: Destroying mutex\n"); - status = pthread_cond_destroy(&cond); - if (status != 0) - { - printf("restart_thread: ERROR pthread_mutex_destroy failed, status=%d\n", status); - } - - /* Then restart the thread */ - - printf("restart_thread: Re-starting thread\n"); - start_thread(waiter, cancelable); -} - -void cancel_test(void) -{ - pthread_t waiter; - void *result; - int status; - - /* Test 1: Normal Cancel *********************************************/ - /* Start the waiter thread */ - - printf("cancel_test: Test 1: Normal Cancelation\n"); - printf("cancel_test: Starting thread\n"); - start_thread(&waiter, 1); - - /* Then cancel it. It should be in the pthread_cond_wait now */ - - printf("cancel_test: Canceling thread\n"); - status = pthread_cancel(waiter); - if (status != 0) - { - printf("cancel_test: ERROR pthread_cancel failed, status=%d\n", status); - } - - /* Then join to the thread to pick up the result (if we don't do - * we will have a memory leak!) - */ - - printf("cancel_test: Joining\n"); - status = pthread_join(waiter, &result); - if (status != 0) - { - printf("cancel_test: ERROR pthread_join failed, status=%d\n", status); - } - else - { - printf("cancel_test: waiter exited with result=%p\n", result); - if (result != PTHREAD_CANCELED) - { - printf("cancel_test: ERROR expected result=%p\n", PTHREAD_CANCELED); - } - else - { - printf("cancel_test: PASS thread terminated with PTHREAD_CANCELED\n"); - } - } - - /* Test 2: Cancel Detached Thread ************************************/ - - printf("cancel_test: Test 2: Cancelation of detached thread\n"); - printf("cancel_test: Re-starting thread\n"); - restart_thread(&waiter, 1); - - /* Detach the thread */ - - status = pthread_detach(waiter); - if (status != 0) - { - printf("cancel_test: ERROR pthread_detach, status=%d\n", status); - } - - /* Then cancel it. It should be in the pthread_cond_wait now */ - - printf("cancel_test: Canceling thread\n"); - status = pthread_cancel(waiter); - if (status != 0) - { - printf("cancel_test: ERROR pthread_cancel failed, status=%d\n", status); - } - - /* Join should now fail */ - - printf("cancel_test: Joining\n"); - status = pthread_join(waiter, &result); - if (status == 0) - { - printf("cancel_test: ERROR pthread_join succeeded\n"); - } - else if (status != ESRCH) - { - printf("cancel_test: ERROR pthread_join failed but with wrong status=%d\n", status); - } - else - { - printf("cancel_test: PASS pthread_join failed with status=ESRCH\n"); - } - - /* Test 3: Non-cancelable threads ************************************/ - - printf("cancel_test: Test 3: Non-cancelable threads\n"); - printf("cancel_test: Re-starting thread (non-cancelable)\n"); - restart_thread(&waiter, 0); - - /* Then cancel it. It should be in the pthread_cond_wait now. The - * behavior here is non-standard: when the thread is at a cancelation - * point, it should be cancelable, even when cancelation is disable. - * - * The cancelation should succeed, because the cancelation is pending. - */ - - printf("cancel_test: Canceling thread\n"); - status = pthread_cancel(waiter); - if (status != 0) - { - printf("cancel_test: ERROR pthread_cancel failed, status=%d\n", status); - } - - /* Signal the thread. It should wake up and restore the cancelable state. - * When the cancelable state is re-enabled, the thread should be canceled. - */ - - status = pthread_mutex_lock(&mutex); - if (status != 0) - { - printf("cancel_test: ERROR pthread_mutex_lock failed, status=%d\n", status); - } - - status = pthread_cond_signal(&cond); - if (status != 0) - { - printf("cancel_test: ERROR pthread_cond_signal failed, status=%d\n", status); - } - - status = pthread_mutex_unlock(&mutex); - if (status != 0) - { - printf("cancel_test: ERROR pthread_mutex_unlock failed, status=%d\n", status); - } - - /* Then join to the thread to pick up the result (if we don't do - * we will have a memory leak!) - */ - - printf("cancel_test: Joining\n"); - status = pthread_join(waiter, &result); - if (status != 0) - { - printf("cancel_test: ERROR pthread_join failed, status=%d\n", status); - } - else - { - printf("cancel_test: waiter exited with result=%p\n", result); - if (result != PTHREAD_CANCELED) - { - printf("cancel_test: ERROR expected result=%p\n", PTHREAD_CANCELED); - } - else - { - printf("cancel_test: PASS thread terminated with PTHREAD_CANCELED\n"); - } - } - -} |