/* * File: cancel6a.c * * * Pthreads-win32 - POSIX Threads Library for Win32 * Copyright (C) 1998 Ben Elliston and Ross Johnson * Copyright (C) 1999,2000,2001 Ross Johnson * * Contact Email: rpj@ise.canberra.edu.au * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA * * -------------------------------------------------------------------------- * * Test Synopsis: Test double cancelation - asynchronous. * Second attempt should fail (ESRCH). * * Test Method (Validation or Falsification): * - * * Requirements Tested: * - * * Features Tested: * -  * * Cases Tested: * -  * * Description: * -  * * Environment: * -  * * Input: * - None. * * Output: * - File name, Line number, and failed expression on failure. * - No output on success. * * Assumptions: * - have working pthread_create, pthread_self, pthread_mutex_lock/unlock *   pthread_testcancel, pthread_cancel, pthread_join * * Pass Criteria: * - Process returns zero exit status. * * Fail Criteria: * - Process returns non-zero exit status. */#include "test.h"/* * Create NUMTHREADS threads in addition to the Main thread. */enum {  NUMTHREADS = 4};typedef struct bag_t_ bag_t;struct bag_t_ {  int threadnum;  int started;  /* Add more per-thread state variables here */  int count;};static bag_t threadbag[NUMTHREADS + 1];void *mythread(void * arg){  int result = ((int)PTHREAD_CANCELED + 1);  bag_t * bag = (bag_t *) arg;  assert(bag == &threadbag[bag->threadnum]);  assert(bag->started == 0);  bag->started = 1;  /* Set to known state and type */  assert(pthread_setcancelstate(PTHREAD_CANCEL_ENABLE, NULL) == 0);  assert(pthread_setcanceltype(PTHREAD_CANCEL_ASYNCHRONOUS, NULL) == 0);  /*   * We wait up to 10 seconds, waking every 0.1 seconds,   * for a cancelation to be applied to us.   */  for (bag->count = 0; bag->count < 100; bag->count++)    Sleep(100);  return (void *) result;}intmain(){  int failed = 0;  int i;  pthread_t t[NUMTHREADS + 1];  assert((t[0] = pthread_self()).p != NULL);  for (i = 1; i <= NUMTHREADS; i++)    {      threadbag[i].started = 0;      threadbag[i].threadnum = i;      assert(pthread_create(&t[i], NULL, mythread, (void *) &threadbag[i]) == 0);    }  /*   * Code to control or munipulate child threads should probably go here.   */  Sleep(500);  for (i = 1; i <= NUMTHREADS; i++)    {      assert(pthread_cancel(t[i]) == 0);      assert(pthread_cancel(t[i]) == ESRCH);    }  /*   * Give threads time to run.   */  Sleep(NUMTHREADS * 100);  /*   * Standard check that all threads started.   */  for (i = 1; i <= NUMTHREADS; i++)    {      if (!threadbag[i].started)	{	  failed |= !threadbag[i].started;	  fprintf(stderr, "Thread %d: started %d\n", i, threadbag[i].started);	}    }  assert(!failed);  /*   * Check any results here. Set "failed" and only print output on failure.   */  failed = 0;  for (i = 1; i <= NUMTHREADS; i++)    {      int fail = 0;      int result = 0;      /*       * The thread does not contain any cancelation points, so       * a return value of PTHREAD_CANCELED confirms that async       * cancelation succeeded.       */      assert(pthread_join(t[i], (void **) &result) == 0);      fail = (result != (int) PTHREAD_CANCELED);      if (fail)	{	  fprintf(stderr, "Thread %d: started %d: count %d\n",		  i,		  threadbag[i].started,		  threadbag[i].count);	}      failed = (failed || fail);    }  assert(!failed);  /*   * Success.   */  return 0;}