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|
/*
* robust5.c
*
*
* --------------------------------------------------------------------------
*
* Pthreads-win32 - POSIX Threads Library for Win32
* Copyright(C) 1998 John E. Bossom
* Copyright(C) 1999,2005 Pthreads-win32 contributors
*
* Contact Email: rpj@callisto.canberra.edu.au
*
* 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:
* http://sources.redhat.com/pthreads-win32/contributors.html
*
* 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 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 in the file COPYING.LIB;
* if not, write to the Free Software Foundation, Inc.,
* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
*
* --------------------------------------------------------------------------
*
* Thread A locks multiple robust mutexes
* Thread B blocks on same mutexes
* Thread A terminates with thread waiting on mutexes
* Thread B awakes and inherits each mutex in turn
* Thread B terminates leaving orphaned mutexes
* Main inherits mutexes, sets consistent and unlocks.
*
* Depends on API functions:
* pthread_create()
* pthread_join()
* pthread_mutex_init()
* pthread_mutex_lock()
* pthread_mutex_unlock()
* pthread_mutex_destroy()
* pthread_mutexattr_init()
* pthread_mutexattr_setrobust()
* pthread_mutexattr_settype()
* pthread_mutexattr_destroy()
*/
#include "test.h"
static int lockCount;
static pthread_mutex_t mutex[3];
void * owner(void * arg)
{
assert(pthread_mutex_lock(&mutex[0]) == 0);
lockCount++;
assert(pthread_mutex_lock(&mutex[1]) == 0);
lockCount++;
assert(pthread_mutex_lock(&mutex[2]) == 0);
lockCount++;
return 0;
}
void * inheritor(void * arg)
{
assert(pthread_mutex_lock(&mutex[0]) == EOWNERDEAD);
lockCount++;
assert(pthread_mutex_lock(&mutex[1]) == EOWNERDEAD);
lockCount++;
assert(pthread_mutex_lock(&mutex[2]) == EOWNERDEAD);
lockCount++;
return 0;
}
int
main()
{
pthread_t to, ti;
pthread_mutexattr_t ma;
assert(pthread_mutexattr_init(&ma) == 0);
assert(pthread_mutexattr_setrobust(&ma, PTHREAD_MUTEX_ROBUST) == 0);
lockCount = 0;
assert(pthread_mutex_init(&mutex[0], &ma) == 0);
assert(pthread_mutex_init(&mutex[1], &ma) == 0);
assert(pthread_mutex_init(&mutex[2], &ma) == 0);
assert(pthread_create(&to, NULL, owner, NULL) == 0);
assert(pthread_join(to, NULL) == 0);
assert(pthread_create(&ti, NULL, inheritor, NULL) == 0);
assert(pthread_join(ti, NULL) == 0);
assert(lockCount == 6);
assert(pthread_mutex_lock(&mutex[0]) == EOWNERDEAD);
assert(pthread_mutex_consistent(&mutex[0]) == 0);
assert(pthread_mutex_unlock(&mutex[0]) == 0);
assert(pthread_mutex_destroy(&mutex[0]) == 0);
assert(pthread_mutex_lock(&mutex[1]) == EOWNERDEAD);
assert(pthread_mutex_consistent(&mutex[1]) == 0);
assert(pthread_mutex_unlock(&mutex[1]) == 0);
assert(pthread_mutex_destroy(&mutex[1]) == 0);
assert(pthread_mutex_lock(&mutex[2]) == EOWNERDEAD);
assert(pthread_mutex_consistent(&mutex[2]) == 0);
assert(pthread_mutex_unlock(&mutex[2]) == 0);
assert(pthread_mutex_destroy(&mutex[2]) == 0);
assert(pthread_mutexattr_destroy(&ma) == 0);
return 0;
}
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