efdb734755
2009-05-05 Jonathan Wakely <jwakely.gcc@gmail.com> PR libstdc++/39909 * include/std/mutex (__get_once_functor_lock, __get_once_mutex, __set_once_functor_lock_ptr): Replace global lock object with local locks on global mutex. * src/mutex.cc (__get_once_functor_lock, __get_once_mutex, __set_once_functor_lock_ptr): Likewise, keeping old function to preserve ABI. (__once_proxy): Use pointer to local lock if set, global lock otherwise. * config/abi/pre/gnu.ver: Add new symbols to new ABI version. * testsuite/util/testsuite_abi.cc: Add GLIBCX_3.4.12 version. * testsuite/30_threads/call_once/39909.cc: New. From-SVN: r147137
57 lines
1.6 KiB
C++
57 lines
1.6 KiB
C++
// { dg-do run { target *-*-freebsd* *-*-netbsd* *-*-linux* *-*-solaris* *-*-cygwin *-*-darwin* alpha*-*-osf* mips-sgi-irix6* } }
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// { dg-options " -std=gnu++0x -pthread" { target *-*-freebsd* *-*-netbsd* *-*-linux* alpha*-*-osf* mips-sgi-irix6* } }
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// { dg-options " -std=gnu++0x -pthreads" { target *-*-solaris* } }
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// { dg-options " -std=gnu++0x " { target *-*-cygwin *-*-darwin* } }
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// { dg-require-cstdint "" }
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// { dg-require-gthreads "" }
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// Copyright (C) 2009 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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// 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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// 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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#include <mutex>
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#include <thread>
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#include <testsuite_hooks.h>
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std::once_flag flag;
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int value = 0;
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struct Inc { void operator()() const { ++value; } };
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struct Func
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{
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void operator()() const
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{
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Inc inc;
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for (int i = 0; i < 10000; ++i)
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std::call_once(flag, inc);
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}
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};
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int main()
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{
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Func f;
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std::thread t1(f);
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std::thread t2(f);
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std::thread t3(f);
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t1.join();
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t2.join();
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t3.join();
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VERIFY( value == 1 );
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return 0;
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}
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