83f517994d
2005-08-17 Kelley Cook <kcook@gcc.gnu.org> * All files: Update FSF address. From-SVN: r103192
132 lines
3.6 KiB
C++
132 lines
3.6 KiB
C++
// 2002-01-23 Loren J. Rittle <rittle@labs.mot.com> <ljrittle@acm.org>
|
|
//
|
|
// Copyright (C) 2002, 2003, 2004, 2005 Free Software Foundation, Inc.
|
|
//
|
|
// This file is part of the GNU ISO C++ Library. This library is free
|
|
// software; you can redistribute it and/or modify it under the
|
|
// terms of the GNU General Public License as published by the
|
|
// Free Software Foundation; either version 2, 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 General Public License for more details.
|
|
//
|
|
// You should have received a copy of the GNU General Public License along
|
|
// with this library; see the file COPYING. If not, write to the Free
|
|
// Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
|
|
// USA.
|
|
|
|
// { dg-do run { target *-*-freebsd* *-*-netbsd* *-*-linux* *-*-solaris* *-*-cygwin *-*-darwin* alpha*-*-osf* } }
|
|
// { dg-options "-pthread" { target *-*-freebsd* *-*-netbsd* *-*-linux* alpha*-*-osf* } }
|
|
// { dg-options "-pthreads" { target *-*-solaris* } }
|
|
|
|
// This multi-threading C++/STL/POSIX code adheres to rules outlined here:
|
|
// http://www.sgi.com/tech/stl/thread_safety.html
|
|
//
|
|
// It is believed to exercise the allocation code in a manner that
|
|
// should reveal memory leaks (and, under rare cases, race conditions,
|
|
// if the STL threading support is fubar'd).
|
|
|
|
#include <list>
|
|
|
|
// Do not include <pthread.h> explicitly; if threads are properly
|
|
// configured for the port, then it is picked up free from STL headers.
|
|
|
|
using namespace std;
|
|
|
|
const int thread_cycles = 10;
|
|
const int thread_pairs = 10;
|
|
const unsigned max_size = 100;
|
|
const int iters = 10000;
|
|
|
|
class task_queue
|
|
{
|
|
public:
|
|
task_queue ()
|
|
{
|
|
pthread_mutex_init (&fooLock, NULL);
|
|
pthread_cond_init (&fooCond1, NULL);
|
|
pthread_cond_init (&fooCond2, NULL);
|
|
}
|
|
~task_queue ()
|
|
{
|
|
pthread_mutex_destroy (&fooLock);
|
|
pthread_cond_destroy (&fooCond1);
|
|
pthread_cond_destroy (&fooCond2);
|
|
}
|
|
list<int> foo;
|
|
pthread_mutex_t fooLock;
|
|
pthread_cond_t fooCond1;
|
|
pthread_cond_t fooCond2;
|
|
};
|
|
|
|
void*
|
|
produce (void* t)
|
|
{
|
|
task_queue& tq = *(static_cast<task_queue*> (t));
|
|
int num = 0;
|
|
while (num < iters)
|
|
{
|
|
pthread_mutex_lock (&tq.fooLock);
|
|
while (tq.foo.size () >= max_size)
|
|
pthread_cond_wait (&tq.fooCond1, &tq.fooLock);
|
|
tq.foo.push_back (num++);
|
|
pthread_cond_signal (&tq.fooCond2);
|
|
pthread_mutex_unlock (&tq.fooLock);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
void*
|
|
consume (void* t)
|
|
{
|
|
task_queue& tq = *(static_cast<task_queue*> (t));
|
|
int num = 0;
|
|
while (num < iters)
|
|
{
|
|
pthread_mutex_lock (&tq.fooLock);
|
|
while (tq.foo.size () == 0)
|
|
pthread_cond_wait (&tq.fooCond2, &tq.fooLock);
|
|
if (tq.foo.front () != num++)
|
|
abort ();
|
|
tq.foo.pop_front ();
|
|
pthread_cond_signal (&tq.fooCond1);
|
|
pthread_mutex_unlock (&tq.fooLock);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
main ()
|
|
{
|
|
pthread_t prod[thread_pairs];
|
|
pthread_t cons[thread_pairs];
|
|
|
|
task_queue* tq[thread_pairs];
|
|
|
|
#if defined(__sun) && defined(__svr4__) && _XOPEN_VERSION >= 500
|
|
pthread_setconcurrency (thread_pairs * 2);
|
|
#endif
|
|
|
|
for (int j = 0; j < thread_cycles; j++)
|
|
{
|
|
for (int i = 0; i < thread_pairs; i++)
|
|
{
|
|
tq[i] = new task_queue;
|
|
pthread_create (&prod[i], NULL, produce, static_cast<void*> (tq[i]));
|
|
pthread_create (&cons[i], NULL, consume, static_cast<void*> (tq[i]));
|
|
}
|
|
|
|
for (int i = 0; i < thread_pairs; i++)
|
|
{
|
|
pthread_join (prod[i], NULL);
|
|
pthread_join (cons[i], NULL);
|
|
delete tq[i];
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|