POSIX Threads for Windows Code

/*
 * File: exception1.c
 *
 *
 * --------------------------------------------------------------------------
 *
 *      Pthreads4w - POSIX Threads for Windows
 *      Copyright 1998 John E. Bossom
 *      Copyright 1999-2018, Pthreads4w contributors
 *
 *      Homepage: https://sourceforge.net/projects/pthreads4w/
 *
 *      The current list of contributors is contained
 *      in the file CONTRIBUTORS included with the source
 *      code distribution. The list can also be seen at the
 *      following World Wide Web location:
 *
 *      https://sourceforge.net/p/pthreads4w/wiki/Contributors/
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 * --------------------------------------------------------------------------
 *
 * Test Synopsis: Test passing of exceptions back to the application.
 *
 * 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.
 */

#if defined(_MSC_VER) || defined(__cplusplus)

#include "test.h"

/*
 * Create NUMTHREADS threads in addition to the Main thread.
 */
enum {
  NUMTHREADS = 4
};

void *
exceptionedThread(void * arg)
{
  int dummy = 0;
  void* result = (void*)((int)(size_t)PTHREAD_CANCELED + 1);
  /* Set to async cancelable */

  assert(pthread_setcancelstate(PTHREAD_CANCEL_ENABLE, NULL) == 0);

  assert(pthread_setcanceltype(PTHREAD_CANCEL_ASYNCHRONOUS, NULL) == 0);

  Sleep(100);

#if defined(_MSC_VER) && !defined(__cplusplus)
  __try
  {
    int zero = (int) (size_t)arg; /* Passed in from arg to avoid compiler error */
    int one = 1;
    /*
     * The deliberate exception condition (zero divide) is
     * in an "if" to avoid being optimised out.
     */
    if (dummy == one/zero)
      Sleep(0);
  }
  __except (EXCEPTION_EXECUTE_HANDLER)
  {
    /* Should get into here. */
    result = (void*)((int)(size_t)PTHREAD_CANCELED + 2);
  }
#elif defined(__cplusplus)
  try
  {
    /*
     * I had a zero divide exception here but it
     * wasn't being caught by the catch(...)
     * below under Mingw32. That could be a problem.
     */
    throw dummy;
  }
#if defined(__PtW32CatchAll)
  __PtW32CatchAll
#else
  catch (...)
#endif
  {
    /* Should get into here. */
    result = (void*)((int)(size_t)PTHREAD_CANCELED + 2);
  }
#endif

  return (void *) (size_t)result;
}

void *
canceledThread(void * arg)
{
  void* result = (void*)((int)(size_t)PTHREAD_CANCELED + 1);
  int count;

  /* Set to async cancelable */

  assert(pthread_setcancelstate(PTHREAD_CANCEL_ENABLE, NULL) == 0);

  assert(pthread_setcanceltype(PTHREAD_CANCEL_ASYNCHRONOUS, NULL) == 0);

#if defined(_MSC_VER) && !defined(__cplusplus)
  __try
  {
    /*
     * We wait up to 10 seconds, waking every 0.1 seconds,
     * for a cancellation to be applied to us.
     */
    for (count = 0; count < 100; count++)
      Sleep(100);
  }
  __except (EXCEPTION_EXECUTE_HANDLER)
  {
    /* Should NOT get into here. */
    result = (void*)((int)(size_t)PTHREAD_CANCELED + 2);
  }
#elif defined(__cplusplus)
  try
  {
    /*
     * We wait up to 10 seconds, waking every 0.1 seconds,
     * for a cancellation to be applied to us.
     */
    for (count = 0; count < 100; count++)
      Sleep(100);
  }
#if defined(__PtW32CatchAll)
  __PtW32CatchAll
#else
  catch (...)
#endif
  {
    /* Should NOT get into here. */
    result = (void*)((int)(size_t)PTHREAD_CANCELED + 2);
  }
#endif

  return (void *) (size_t)result;
}

int
main()
{
  int failed = 0;
  int i;
  pthread_t mt;
  pthread_t et[NUMTHREADS];
  pthread_t ct[NUMTHREADS];

  DWORD dwMode = SetErrorMode(SEM_NOGPFAULTERRORBOX);
  SetErrorMode(dwMode | SEM_NOGPFAULTERRORBOX);

  assert((mt = pthread_self()).p != NULL);

  for (i = 0; i < NUMTHREADS; i++)
    {
      assert(pthread_create(&et[i], NULL, exceptionedThread, (void *) 0) == 0);
      assert(pthread_create(&ct[i], NULL, canceledThread, NULL) == 0);
    }

  /*
   * Code to control or manipulate child threads should probably go here.
   */
  Sleep(100);

  for (i = 0; i < NUMTHREADS; i++)
    {
      assert(pthread_cancel(ct[i]) == 0);
    }

  /*
   * Give threads time to run.
   */
  Sleep(NUMTHREADS * 100);

  /*
   * Check any results here. Set "failed" and only print output on failure.
   */
  failed = 0;
  for (i = 0; i < NUMTHREADS; i++)
    {
      int fail = 0;
      void* result = (void*)0;

	/* Canceled thread */
      assert(pthread_join(ct[i], &result) == 0);
      assert(!(fail = (result != PTHREAD_CANCELED)));

      failed = (failed || fail);

      /* Exceptioned thread */
      assert(pthread_join(et[i], &result) == 0);
      assert(!(fail = (result != (void*)((int)(size_t)PTHREAD_CANCELED + 2))));

      failed = (failed || fail);
    }

  assert(!failed);

  /*
   * Success.
   */
  return 0;
}

#else /* defined(_MSC_VER) || defined(__cplusplus) */

#include <stdio.h>

int
main()
{
  fprintf(stderr, "Test N/A for this compiler environment.\n");
  return 0;
}

#endif /* defined(_MSC_VER) || defined(__cplusplus) */