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Resync new repository with old repo r5166
git-svn-id: http://svn.code.sf.net/p/nuttx/code/trunk@5153 42af7a65-404d-4744-a932-0658087f49c3
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patacongo
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/***********************************************************************
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* examples/ostest/cancel.c
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*
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* Copyright (C) 2007-2009 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <gnutt@nuttx.org>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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***********************************************************************/
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#include <stdio.h>
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#include <time.h>
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#include <pthread.h>
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#include <errno.h>
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#include "ostest.h"
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static pthread_mutex_t mutex;
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static pthread_cond_t cond;
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static void *thread_waiter(void *parameter)
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{
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int status;
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/* Take the mutex */
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printf("thread_waiter: Taking mutex\n");
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status = pthread_mutex_lock(&mutex);
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if (status != 0)
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{
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printf("thread_waiter: ERROR pthread_mutex_lock failed, status=%d\n", status);
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}
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printf("thread_waiter: Starting wait for condition\n");
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/* Are we a non-cancelable thread? Yes, set the non-cancelable state */
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if (!parameter)
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{
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printf("thread_waiter: Setting non-cancelable\n");
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status = pthread_setcancelstate(PTHREAD_CANCEL_DISABLE, NULL);
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if (status != 0)
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{
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printf("thread_waiter: ERROR pthread_setcancelstate failed, status=%d\n", status);
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}
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}
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/* The wait -- we will never awaken from this. */
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status = pthread_cond_wait(&cond, &mutex);
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if (status != 0)
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{
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printf("thread_waiter: ERROR pthread_cond_wait failed, status=%d\n", status);
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}
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/* Release the mutex */
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printf("thread_waiter: Releasing mutex\n");
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status = pthread_mutex_unlock(&mutex);
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if (status != 0)
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{
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printf("thread_waiter: ERROR pthread_mutex_unlock failed, status=%d\n", status);
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}
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/* Set the cancelable state */
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printf("thread_waiter: Setting cancelable\n");
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status = pthread_setcancelstate(PTHREAD_CANCEL_ENABLE, NULL);
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if (status != 0)
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{
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printf("thread_waiter: ERROR pthread_setcancelstate failed, status=%d\n", status);
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}
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printf("thread_waiter: Exit with status 0x12345678\n");
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pthread_exit((pthread_addr_t)0x12345678);
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return NULL;
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}
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static void start_thread(pthread_t *waiter, int cancelable)
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{
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pthread_attr_t attr;
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int status;
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/* Initialize the mutex */
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printf("start_thread: Initializing mutex\n");
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status = pthread_mutex_init(&mutex, NULL);
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if (status != 0)
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{
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printf("start_thread: ERROR pthread_mutex_init failed, status=%d\n", status);
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}
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/* Initialize the condition variable */
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printf("start_thread: Initializing cond\n");
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status = pthread_cond_init(&cond, NULL);
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if (status != 0)
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{
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printf("start_thread: ERROR pthread_cond_init failed, status=%d\n", status);
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}
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/* Set up attributes */
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status = pthread_attr_init(&attr);
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if (status != 0)
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{
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printf("start_thread: pthread_attr_init failed, status=%d\n", status);
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}
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status = pthread_attr_setstacksize(&attr, STACKSIZE);
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if (status != 0)
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{
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printf("start_thread: pthread_attr_setstacksize failed, status=%d\n", status);
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}
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/* Start the waiter thread */
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printf("start_thread: Starting thread\n");
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status = pthread_create(waiter, &attr, thread_waiter, (pthread_addr_t)cancelable);
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if (status != 0)
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{
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printf("start_thread: ERROR pthread_create failed, status=%d\n", status);
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}
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/* Make sure that the waiter thread gets a chance to run */
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printf("start_thread: Yielding\n");
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pthread_yield();
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}
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static void restart_thread(pthread_t *waiter, int cancelable)
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{
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int status;
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/* Destroy the condition variable */
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printf("restart_thread: Destroying cond\n");
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status = pthread_cond_destroy(&cond);
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if (status != 0)
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{
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printf("restart_thread: ERROR pthread_cond_destroy failed, status=%d\n", status);
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}
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/* Destroy the mutex */
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printf("restart_thread: Destroying mutex\n");
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status = pthread_cond_destroy(&cond);
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if (status != 0)
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{
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printf("restart_thread: ERROR pthread_mutex_destroy failed, status=%d\n", status);
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}
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/* Then restart the thread */
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printf("restart_thread: Re-starting thread\n");
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start_thread(waiter, cancelable);
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}
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void cancel_test(void)
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{
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pthread_t waiter;
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void *result;
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int status;
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/* Test 1: Normal Cancel *********************************************/
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/* Start the waiter thread */
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printf("cancel_test: Test 1: Normal Cancelation\n");
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printf("cancel_test: Starting thread\n");
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start_thread(&waiter, 1);
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/* Then cancel it. It should be in the pthread_cond_wait now */
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printf("cancel_test: Canceling thread\n");
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status = pthread_cancel(waiter);
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if (status != 0)
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{
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printf("cancel_test: ERROR pthread_cancel failed, status=%d\n", status);
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}
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/* Then join to the thread to pick up the result (if we don't do
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* we will have a memory leak!)
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*/
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printf("cancel_test: Joining\n");
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status = pthread_join(waiter, &result);
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if (status != 0)
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{
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printf("cancel_test: ERROR pthread_join failed, status=%d\n", status);
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}
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else
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{
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printf("cancel_test: waiter exited with result=%p\n", result);
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if (result != PTHREAD_CANCELED)
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{
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printf("cancel_test: ERROR expected result=%p\n", PTHREAD_CANCELED);
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}
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else
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{
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printf("cancel_test: PASS thread terminated with PTHREAD_CANCELED\n");
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}
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}
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/* Test 2: Cancel Detached Thread ************************************/
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printf("cancel_test: Test 2: Cancelation of detached thread\n");
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printf("cancel_test: Re-starting thread\n");
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restart_thread(&waiter, 1);
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/* Detach the thread */
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status = pthread_detach(waiter);
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if (status != 0)
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{
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printf("cancel_test: ERROR pthread_detach, status=%d\n", status);
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}
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/* Then cancel it. It should be in the pthread_cond_wait now */
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printf("cancel_test: Canceling thread\n");
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status = pthread_cancel(waiter);
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if (status != 0)
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{
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printf("cancel_test: ERROR pthread_cancel failed, status=%d\n", status);
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}
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/* Join should now fail */
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printf("cancel_test: Joining\n");
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status = pthread_join(waiter, &result);
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if (status == 0)
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{
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printf("cancel_test: ERROR pthread_join succeeded\n");
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}
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else if (status != ESRCH)
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{
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printf("cancel_test: ERROR pthread_join failed but with wrong status=%d\n", status);
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}
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else
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{
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printf("cancel_test: PASS pthread_join failed with status=ESRCH\n");
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}
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/* Test 3: Non-cancelable threads ************************************/
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printf("cancel_test: Test 3: Non-cancelable threads\n");
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printf("cancel_test: Re-starting thread (non-cancelable)\n");
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restart_thread(&waiter, 0);
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/* Then cancel it. It should be in the pthread_cond_wait now. The
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* behavior here is non-standard: when the thread is at a cancelation
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* point, it should be cancelable, even when cancelation is disable.
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*
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* The cancelation should succeed, because the cancelation is pending.
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*/
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printf("cancel_test: Canceling thread\n");
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status = pthread_cancel(waiter);
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if (status != 0)
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{
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printf("cancel_test: ERROR pthread_cancel failed, status=%d\n", status);
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}
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/* Signal the thread. It should wake up and restore the cancelable state.
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* When the cancelable state is re-enabled, the thread should be canceled.
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*/
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status = pthread_mutex_lock(&mutex);
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if (status != 0)
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{
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printf("cancel_test: ERROR pthread_mutex_lock failed, status=%d\n", status);
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}
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status = pthread_cond_signal(&cond);
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if (status != 0)
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{
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printf("cancel_test: ERROR pthread_cond_signal failed, status=%d\n", status);
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}
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status = pthread_mutex_unlock(&mutex);
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if (status != 0)
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{
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printf("cancel_test: ERROR pthread_mutex_unlock failed, status=%d\n", status);
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}
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/* Then join to the thread to pick up the result (if we don't do
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* we will have a memory leak!)
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*/
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printf("cancel_test: Joining\n");
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status = pthread_join(waiter, &result);
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if (status != 0)
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{
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printf("cancel_test: ERROR pthread_join failed, status=%d\n", status);
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}
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else
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{
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printf("cancel_test: waiter exited with result=%p\n", result);
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if (result != PTHREAD_CANCELED)
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{
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printf("cancel_test: ERROR expected result=%p\n", PTHREAD_CANCELED);
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}
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else
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{
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printf("cancel_test: PASS thread terminated with PTHREAD_CANCELED\n");
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}
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}
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}
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