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[/] [openrisc/] [trunk/] [gnu-dev/] [or1k-gcc/] [libstdc++-v3/] [src/] [c++11/] [thread.cc] - Rev 823
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// thread -*- C++ -*- // Copyright (C) 2008, 2009, 2010, 2011 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. // Under Section 7 of GPL version 3, you are granted additional // permissions described in the GCC Runtime Library Exception, version // 3.1, as published by the Free Software Foundation. // You should have received a copy of the GNU General Public License and // a copy of the GCC Runtime Library Exception along with this program; // see the files COPYING3 and COPYING.RUNTIME respectively. If not, see // <http://www.gnu.org/licenses/>. #include <thread> #include <system_error> #include <cerrno> #if defined(_GLIBCXX_USE_GET_NPROCS) # include <sys/sysinfo.h> # define _GLIBCXX_NPROCS get_nprocs() #elif defined(_GLIBCXX_USE_PTHREADS_NUM_PROCESSORS_NP) # define _GLIBCXX_NPROCS pthread_num_processors_np() #elif defined(_GLIBCXX_USE_SYSCTL_HW_NCPU) # include <stddef.h> # include <sys/sysctl.h> static inline int get_nprocs() { int count; size_t size = sizeof(count); int mib[] = { CTL_HW, HW_NCPU }; if (!sysctl(mib, 2, &count, &size, NULL, 0)) return count; return 0; } # define _GLIBCXX_NPROCS get_nprocs() #elif defined(_GLIBCXX_USE_SC_NPROCESSORS_ONLN) # include <unistd.h> # define _GLIBCXX_NPROCS sysconf(_SC_NPROCESSORS_ONLN) #elif defined(_GLIBCXX_USE_SC_NPROC_ONLN) # include <unistd.h> # define _GLIBCXX_NPROCS sysconf(_SC_NPROC_ONLN) #else # define _GLIBCXX_NPROCS 0 #endif #if defined(_GLIBCXX_HAS_GTHREADS) && defined(_GLIBCXX_USE_C99_STDINT_TR1) namespace std _GLIBCXX_VISIBILITY(default) { namespace { extern "C" void* execute_native_thread_routine(void* __p) { thread::_Impl_base* __t = static_cast<thread::_Impl_base*>(__p); thread::__shared_base_type __local; __local.swap(__t->_M_this_ptr); __try { __t->_M_run(); } __catch(...) { std::terminate(); } return 0; } } _GLIBCXX_BEGIN_NAMESPACE_VERSION void thread::join() { int __e = EINVAL; if (_M_id != id()) __e = __gthread_join(_M_id._M_thread, 0); if (__e) __throw_system_error(__e); _M_id = id(); } void thread::detach() { int __e = EINVAL; if (_M_id != id()) __e = __gthread_detach(_M_id._M_thread); if (__e) __throw_system_error(__e); _M_id = id(); } void thread::_M_start_thread(__shared_base_type __b) { if (!__gthread_active_p()) __throw_system_error(int(errc::operation_not_permitted)); __b->_M_this_ptr = __b; int __e = __gthread_create(&_M_id._M_thread, &execute_native_thread_routine, __b.get()); if (__e) { __b->_M_this_ptr.reset(); __throw_system_error(__e); } } unsigned int thread::hardware_concurrency() noexcept { int __n = _GLIBCXX_NPROCS; if (__n < 0) __n = 0; return __n; } _GLIBCXX_END_NAMESPACE_VERSION } // namespace std #endif // _GLIBCXX_HAS_GTHREADS && _GLIBCXX_USE_C99_STDINT_TR1
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