0aa06b18fc
2004-11-23 Benjamin Kosnik <bkoz@redhat.com> * docs/doxygen/doxygroups.cc: Add std::tr1 namespace. * docs/doxygen/run_doxygen: Renames for std::tr1. * docs/doxygen/user.cfg.in: Add cxxabi.h. * include/bits/*.tcc: Add file markup. * include/bits/allocator.h: Add link to allocator.html. * include/bits/atomicity.h: Add file markup. * include/bits/concurrence.h: Same. * include/bits/functexcept.h: Same. * include/ext*: Adjust file markup, remove GCC3 bits. * include/std/*: Adjust file markup, remove bits about renamed files. * libsupc++/cxxabi.h: Add file markup. * testsuite/20_util/memory/auto_ptr/assign_neg.cc: Adjust line numbers. From-SVN: r91135
101 lines
3.1 KiB
C++
101 lines
3.1 KiB
C++
// Support for concurrent programing -*- C++ -*-
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// Copyright (C) 2003, 2004
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// 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 2, 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 COPYING. If not, write to the Free
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// Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
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// USA.
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// As a special exception, you may use this file as part of a free software
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// library without restriction. Specifically, if other files instantiate
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// templates or use macros or inline functions from this file, or you compile
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// this file and link it with other files to produce an executable, this
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// file does not by itself cause the resulting executable to be covered by
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// the GNU General Public License. This exception does not however
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// invalidate any other reasons why the executable file might be covered by
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// the GNU General Public License.
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/** @file concurrence.h
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* This is an internal header file, included by other library headers.
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* You should not attempt to use it directly.
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*/
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#ifndef _CONCURRENCE_H
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#define _CONCURRENCE_H 1
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// GCC's thread abstraction layer
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#include "bits/gthr.h"
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#if __GTHREADS
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# ifdef __GTHREAD_MUTEX_INIT
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# define __glibcxx_mutex_type __gthread_mutex_t
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# define __glibcxx_mutex_define_initialized(NAME) \
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__gthread_mutex_t NAME = __GTHREAD_MUTEX_INIT
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# define __glibcxx_mutex_lock(NAME) \
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__gthread_mutex_lock(&NAME)
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# else
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// Implies __GTHREAD_MUTEX_INIT_FUNCTION
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struct __glibcxx_mutex : public __gthread_mutex_t
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{
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__glibcxx_mutex() { __GTHREAD_MUTEX_INIT_FUNCTION(this); }
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};
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# define __glibcxx_mutex_type __glibcxx_mutex
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# define __glibcxx_mutex_define_initialized(NAME) \
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__glibcxx_mutex NAME
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# define __glibcxx_mutex_lock(NAME) \
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__gthread_mutex_lock(&NAME)
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# endif
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# define __glibcxx_mutex_unlock(NAME) __gthread_mutex_unlock(&NAME)
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#else
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# define __glibcxx_mutex_type __gthread_mutex_t
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# define __glibcxx_mutex_define_initialized(NAME) __gthread_mutex_t NAME
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# define __glibcxx_mutex_lock(NAME)
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# define __glibcxx_mutex_unlock(NAME)
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#endif
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namespace __gnu_cxx
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{
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typedef __glibcxx_mutex_type mutex_type;
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/// @brief Scoped lock idiom.
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// Acquire the mutex here with a constructor call, then release with
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// the destructor call in accordance with RAII style.
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class lock
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{
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// Externally defined and initialized.
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mutex_type& device;
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public:
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explicit lock(mutex_type& name) : device(name)
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{ __glibcxx_mutex_lock(device); }
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~lock() throw()
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{ __glibcxx_mutex_unlock(device); }
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private:
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lock(const lock&);
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lock& operator=(const lock&);
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};
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}
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#endif
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