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author | Jonathan Wakely <jwakely.gcc@gmail.com> | 2009-05-05 21:32:38 +0000 |
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committer | Jonathan Wakely <redi@gcc.gnu.org> | 2009-05-05 22:32:38 +0100 |
commit | efdb734755a28bf494a0e375e9fec6d1012482b4 (patch) | |
tree | 7872cbd2d5e29eb4cc6cb620d05574769ca67a24 /libstdc++-v3/testsuite/30_threads/call_once/39909.cc | |
parent | 32f579f6ebde02d94ac8fbd0379b1d0207dd9ac5 (diff) | |
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re PR libstdc++/39909 (non-TLS version of std::call_once causes terminate)
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
Diffstat (limited to 'libstdc++-v3/testsuite/30_threads/call_once/39909.cc')
-rw-r--r-- | libstdc++-v3/testsuite/30_threads/call_once/39909.cc | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/libstdc++-v3/testsuite/30_threads/call_once/39909.cc b/libstdc++-v3/testsuite/30_threads/call_once/39909.cc new file mode 100644 index 0000000..aa12591 --- /dev/null +++ b/libstdc++-v3/testsuite/30_threads/call_once/39909.cc @@ -0,0 +1,56 @@ +// { dg-do run { target *-*-freebsd* *-*-netbsd* *-*-linux* *-*-solaris* *-*-cygwin *-*-darwin* alpha*-*-osf* mips-sgi-irix6* } } +// { dg-options " -std=gnu++0x -pthread" { target *-*-freebsd* *-*-netbsd* *-*-linux* alpha*-*-osf* mips-sgi-irix6* } } +// { dg-options " -std=gnu++0x -pthreads" { target *-*-solaris* } } +// { dg-options " -std=gnu++0x " { target *-*-cygwin *-*-darwin* } } +// { dg-require-cstdint "" } +// { dg-require-gthreads "" } + +// Copyright (C) 2009 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 3, 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 COPYING3. If not see +// <http://www.gnu.org/licenses/>. + + +#include <mutex> +#include <thread> +#include <testsuite_hooks.h> + +std::once_flag flag; +int value = 0; + +struct Inc { void operator()() const { ++value; } }; + +struct Func +{ + void operator()() const + { + Inc inc; + for (int i = 0; i < 10000; ++i) + std::call_once(flag, inc); + } +}; + +int main() +{ + Func f; + std::thread t1(f); + std::thread t2(f); + std::thread t3(f); + t1.join(); + t2.join(); + t3.join(); + VERIFY( value == 1 ); + return 0; +} |