200 lines
6.7 KiB
C
200 lines
6.7 KiB
C
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/*
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* robust4.c
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*
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*
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* --------------------------------------------------------------------------
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*
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* Pthreads-win32 - POSIX Threads Library for Win32
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* Copyright(C) 1998 John E. Bossom
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* Copyright(C) 1999,2005 Pthreads-win32 contributors
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*
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* Contact Email: rpj@callisto.canberra.edu.au
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*
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* The current list of contributors is contained
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* in the file CONTRIBUTORS included with the source
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* code distribution. The list can also be seen at the
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* following World Wide Web location:
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* http://sources.redhat.com/pthreads-win32/contributors.html
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library in the file COPYING.LIB;
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* if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
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*
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* --------------------------------------------------------------------------
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*
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* Thread A locks multiple robust mutexes
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* Thread B blocks on same mutexes in different orderings
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* Thread A terminates with thread waiting on mutexes
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* Thread B awakes and inherits each mutex in turn, sets consistent and unlocks
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* Main acquires mutexes with recovered state.
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*
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* Depends on API functions:
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* pthread_create()
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* pthread_join()
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* pthread_mutex_init()
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* pthread_mutex_lock()
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* pthread_mutex_unlock()
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* pthread_mutex_destroy()
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* pthread_mutexattr_init()
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* pthread_mutexattr_setrobust()
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* pthread_mutexattr_settype()
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* pthread_mutexattr_destroy()
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*/
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#include "test.h"
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static int lockCount;
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static pthread_mutex_t mutex[3];
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void * owner(void * arg)
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{
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assert(pthread_mutex_lock(&mutex[0]) == 0);
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lockCount++;
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assert(pthread_mutex_lock(&mutex[1]) == 0);
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lockCount++;
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assert(pthread_mutex_lock(&mutex[2]) == 0);
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lockCount++;
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Sleep(200);
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return 0;
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}
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void * inheritor(void * arg)
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{
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int* o = (int*)arg;
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assert(pthread_mutex_lock(&mutex[o[0]]) == EOWNERDEAD);
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lockCount++;
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assert(pthread_mutex_lock(&mutex[o[1]]) == EOWNERDEAD);
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lockCount++;
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assert(pthread_mutex_lock(&mutex[o[2]]) == EOWNERDEAD);
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lockCount++;
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assert(pthread_mutex_consistent(&mutex[o[2]]) == 0);
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assert(pthread_mutex_consistent(&mutex[o[1]]) == 0);
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assert(pthread_mutex_consistent(&mutex[o[0]]) == 0);
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assert(pthread_mutex_unlock(&mutex[o[2]]) == 0);
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assert(pthread_mutex_unlock(&mutex[o[1]]) == 0);
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assert(pthread_mutex_unlock(&mutex[o[0]]) == 0);
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return 0;
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}
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int
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main()
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{
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pthread_t to, ti;
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pthread_mutexattr_t ma;
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int order[3];
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assert(pthread_mutexattr_init(&ma) == 0);
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assert(pthread_mutexattr_setrobust(&ma, PTHREAD_MUTEX_ROBUST) == 0);
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order[0]=0;
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order[1]=1;
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order[2]=2;
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lockCount = 0;
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assert(pthread_mutex_init(&mutex[0], &ma) == 0);
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assert(pthread_mutex_init(&mutex[1], &ma) == 0);
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assert(pthread_mutex_init(&mutex[2], &ma) == 0);
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assert(pthread_create(&to, NULL, owner, NULL) == 0);
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Sleep(100);
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assert(pthread_create(&ti, NULL, inheritor, (void *)order) == 0);
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assert(pthread_join(to, NULL) == 0);
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assert(pthread_join(ti, NULL) == 0);
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assert(lockCount == 6);
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assert(pthread_mutex_lock(&mutex[0]) == 0);
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assert(pthread_mutex_unlock(&mutex[0]) == 0);
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assert(pthread_mutex_destroy(&mutex[0]) == 0);
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assert(pthread_mutex_lock(&mutex[1]) == 0);
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assert(pthread_mutex_unlock(&mutex[1]) == 0);
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assert(pthread_mutex_destroy(&mutex[1]) == 0);
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assert(pthread_mutex_lock(&mutex[2]) == 0);
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assert(pthread_mutex_unlock(&mutex[2]) == 0);
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assert(pthread_mutex_destroy(&mutex[2]) == 0);
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order[0]=1;
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order[1]=0;
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order[2]=2;
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lockCount = 0;
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assert(pthread_mutex_init(&mutex[0], &ma) == 0);
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assert(pthread_mutex_init(&mutex[1], &ma) == 0);
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assert(pthread_mutex_init(&mutex[2], &ma) == 0);
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assert(pthread_create(&to, NULL, owner, NULL) == 0);
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Sleep(100);
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assert(pthread_create(&ti, NULL, inheritor, (void *)order) == 0);
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assert(pthread_join(to, NULL) == 0);
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assert(pthread_join(ti, NULL) == 0);
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assert(lockCount == 6);
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assert(pthread_mutex_lock(&mutex[0]) == 0);
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assert(pthread_mutex_unlock(&mutex[0]) == 0);
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assert(pthread_mutex_destroy(&mutex[0]) == 0);
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assert(pthread_mutex_lock(&mutex[1]) == 0);
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assert(pthread_mutex_unlock(&mutex[1]) == 0);
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assert(pthread_mutex_destroy(&mutex[1]) == 0);
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assert(pthread_mutex_lock(&mutex[2]) == 0);
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assert(pthread_mutex_unlock(&mutex[2]) == 0);
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assert(pthread_mutex_destroy(&mutex[2]) == 0);
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order[0]=0;
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order[1]=2;
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order[2]=1;
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lockCount = 0;
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assert(pthread_mutex_init(&mutex[0], &ma) == 0);
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assert(pthread_mutex_init(&mutex[1], &ma) == 0);
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assert(pthread_mutex_init(&mutex[2], &ma) == 0);
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assert(pthread_create(&to, NULL, owner, NULL) == 0);
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Sleep(100);
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assert(pthread_create(&ti, NULL, inheritor, (void *)order) == 0);
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assert(pthread_join(to, NULL) == 0);
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assert(pthread_join(ti, NULL) == 0);
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assert(lockCount == 6);
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assert(pthread_mutex_lock(&mutex[0]) == 0);
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assert(pthread_mutex_unlock(&mutex[0]) == 0);
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assert(pthread_mutex_destroy(&mutex[0]) == 0);
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assert(pthread_mutex_lock(&mutex[1]) == 0);
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assert(pthread_mutex_unlock(&mutex[1]) == 0);
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assert(pthread_mutex_destroy(&mutex[1]) == 0);
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assert(pthread_mutex_lock(&mutex[2]) == 0);
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assert(pthread_mutex_unlock(&mutex[2]) == 0);
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assert(pthread_mutex_destroy(&mutex[2]) == 0);
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order[0]=2;
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order[1]=1;
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order[2]=0;
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lockCount = 0;
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assert(pthread_mutex_init(&mutex[0], &ma) == 0);
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assert(pthread_mutex_init(&mutex[1], &ma) == 0);
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assert(pthread_mutex_init(&mutex[2], &ma) == 0);
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assert(pthread_create(&to, NULL, owner, NULL) == 0);
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Sleep(100);
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assert(pthread_create(&ti, NULL, inheritor, (void *)order) == 0);
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assert(pthread_join(to, NULL) == 0);
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assert(pthread_join(ti, NULL) == 0);
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assert(lockCount == 6);
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assert(pthread_mutex_lock(&mutex[0]) == 0);
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assert(pthread_mutex_unlock(&mutex[0]) == 0);
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assert(pthread_mutex_destroy(&mutex[0]) == 0);
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assert(pthread_mutex_lock(&mutex[1]) == 0);
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assert(pthread_mutex_unlock(&mutex[1]) == 0);
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assert(pthread_mutex_destroy(&mutex[1]) == 0);
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assert(pthread_mutex_lock(&mutex[2]) == 0);
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assert(pthread_mutex_unlock(&mutex[2]) == 0);
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assert(pthread_mutex_destroy(&mutex[2]) == 0);
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assert(pthread_mutexattr_destroy(&ma) == 0);
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return 0;
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}
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