mirror of git://gcc.gnu.org/git/gcc.git
106 lines
2.9 KiB
C++
106 lines
2.9 KiB
C++
// 2002-01-23 Loren J. Rittle <rittle@labs.mot.com> <ljrittle@acm.org>
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// Adapted from http://gcc.gnu.org/ml/gcc-bugs/2002-01/msg00679.html
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// which was adapted from pthread1.cc by Mike Lu <MLu@dynamicsoft.com>
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//
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// Copyright (C) 2002-2015 Free Software Foundation, Inc.
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//
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// This file is part of the GNU ISO C++ Library. This library is free
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// software; you can redistribute it and/or modify it under the
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// terms of the GNU General Public License as published by the
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// Free Software Foundation; either version 3, or (at your option)
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// 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
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License along
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// with this library; see the file COPYING3. If not see
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// <http://www.gnu.org/licenses/>.
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// { dg-do run { target *-*-freebsd* *-*-dragonfly* *-*-netbsd* *-*-linux* *-*-gnu* *-*-solaris* *-*-cygwin *-*-darwin* } }
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// { dg-options "-pthread" { target *-*-freebsd* *-*-dragonfly* *-*-netbsd* *-*-linux* *-*-gnu* } }
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// { dg-options "-pthreads" { target *-*-solaris* } }
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#include <string>
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#include <list>
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#include <pthread.h>
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using namespace std;
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static list<string> foo;
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static pthread_mutex_t fooLock = PTHREAD_MUTEX_INITIALIZER;
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static pthread_cond_t fooCondOverflow = PTHREAD_COND_INITIALIZER;
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static pthread_cond_t fooCondUnderflow = PTHREAD_COND_INITIALIZER;
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static unsigned max_size = 10;
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#if defined(__CYGWIN__)
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static int iters = 10000;
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#else
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static int iters = 300000;
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#endif
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void*
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produce (void*)
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{
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for (int num = 0; num < iters; )
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{
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string str ("test string");
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pthread_mutex_lock (&fooLock);
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while (foo.size () >= max_size)
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pthread_cond_wait (&fooCondOverflow, &fooLock);
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foo.push_back (str);
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num++;
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if (foo.size () >= (max_size / 2))
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pthread_cond_signal (&fooCondUnderflow);
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pthread_mutex_unlock (&fooLock);
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}
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// No more data will ever be written, ensure no fini race
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pthread_mutex_lock (&fooLock);
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pthread_cond_signal (&fooCondUnderflow);
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pthread_mutex_unlock (&fooLock);
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return 0;
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}
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void*
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consume (void*)
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{
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for (int num = 0; num < iters; )
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{
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pthread_mutex_lock (&fooLock);
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while (foo.size () == 0)
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pthread_cond_wait (&fooCondUnderflow, &fooLock);
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while (foo.size () > 0)
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{
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string str = foo.back ();
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foo.pop_back ();
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num++;
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}
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pthread_cond_signal (&fooCondOverflow);
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pthread_mutex_unlock (&fooLock);
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}
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return 0;
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}
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int
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main (void)
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{
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#if defined(__sun) && defined(__svr4__) && _XOPEN_VERSION >= 500
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pthread_setconcurrency (2);
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#endif
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pthread_t prod;
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pthread_create (&prod, 0, produce, 0);
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pthread_t cons;
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pthread_create (&cons, 0, consume, 0);
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pthread_join (prod, 0);
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pthread_join (cons, 0);
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return 0;
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}
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