diff options
Diffstat (limited to 'chromium/third_party/cygwin/lib/gcc/i686-pc-cygwin/3.4.4/include/c++/bits/stl_threads.h')
| -rw-r--r-- | chromium/third_party/cygwin/lib/gcc/i686-pc-cygwin/3.4.4/include/c++/bits/stl_threads.h | 150 |
1 files changed, 0 insertions, 150 deletions
diff --git a/chromium/third_party/cygwin/lib/gcc/i686-pc-cygwin/3.4.4/include/c++/bits/stl_threads.h b/chromium/third_party/cygwin/lib/gcc/i686-pc-cygwin/3.4.4/include/c++/bits/stl_threads.h deleted file mode 100644 index 04baf0a08f9..00000000000 --- a/chromium/third_party/cygwin/lib/gcc/i686-pc-cygwin/3.4.4/include/c++/bits/stl_threads.h +++ /dev/null @@ -1,150 +0,0 @@ -// Threading support -*- C++ -*- - -// Copyright (C) 2001, 2002, 2003, 2004 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 2, 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 COPYING. If not, write to the Free -// Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, -// USA. - -// As a special exception, you may use this file as part of a free software -// library without restriction. Specifically, if other files instantiate -// templates or use macros or inline functions from this file, or you compile -// this file and link it with other files to produce an executable, this -// file does not by itself cause the resulting executable to be covered by -// the GNU General Public License. This exception does not however -// invalidate any other reasons why the executable file might be covered by -// the GNU General Public License. - -/* - * Copyright (c) 1997-1999 - * Silicon Graphics Computer Systems, Inc. - * - * Permission to use, copy, modify, distribute and sell this software - * and its documentation for any purpose is hereby granted without fee, - * provided that the above copyright notice appear in all copies and - * that both that copyright notice and this permission notice appear - * in supporting documentation. Silicon Graphics makes no - * representations about the suitability of this software for any - * purpose. It is provided "as is" without express or implied warranty. - */ - -/** @file stl_threads.h - * This is an internal header file, included by other library headers. - * You should not attempt to use it directly. - */ - -#ifndef _STL_THREADS_H -#define _STL_THREADS_H 1 - -#include <cstddef> - -// The only supported threading model is GCC's own gthr.h abstraction -// layer. -#include "bits/gthr.h" - -namespace __gnu_internal -{ -#if !defined(__GTHREAD_MUTEX_INIT) && defined(__GTHREAD_MUTEX_INIT_FUNCTION) - extern __gthread_mutex_t _GLIBCXX_mutex; - extern __gthread_mutex_t *_GLIBCXX_mutex_address; - extern __gthread_once_t _GLIBCXX_once; - extern void _GLIBCXX_mutex_init(void); - extern void _GLIBCXX_mutex_address_init(void); -#endif -} // namespace __gnu_internal - -namespace __gnu_cxx -{ - // Locking class. Note that this class *does not have a - // constructor*. It must be initialized either statically, with - // __STL_MUTEX_INITIALIZER, or dynamically, by explicitly calling - // the _M_initialize member function. (This is similar to the ways - // that a pthreads mutex can be initialized.) There are explicit - // member functions for acquiring and releasing the lock. - - // There is no constructor because static initialization is - // essential for some uses, and only a class aggregate (see section - // 8.5.1 of the C++ standard) can be initialized that way. That - // means we must have no constructors, no base classes, no virtual - // functions, and no private or protected members. - struct _STL_mutex_lock - { - // The class must be statically initialized with __STL_MUTEX_INITIALIZER. -#if !defined(__GTHREAD_MUTEX_INIT) && defined(__GTHREAD_MUTEX_INIT_FUNCTION) - volatile int _M_init_flag; - __gthread_once_t _M_once; -#endif - __gthread_mutex_t _M_lock; - - void - _M_initialize() - { -#ifdef __GTHREAD_MUTEX_INIT - // There should be no code in this path given the usage rules above. -#elif defined(__GTHREAD_MUTEX_INIT_FUNCTION) - if (_M_init_flag) return; - if (__gthread_once(&__gnu_internal::_GLIBCXX_once, - __gnu_internal::_GLIBCXX_mutex_init) != 0 - && __gthread_active_p()) - abort (); - __gthread_mutex_lock(&__gnu_internal::_GLIBCXX_mutex); - if (!_M_init_flag) - { - // Even though we have a global lock, we use __gthread_once to be - // absolutely certain the _M_lock mutex is only initialized once on - // multiprocessor systems. - __gnu_internal::_GLIBCXX_mutex_address = &_M_lock; - if (__gthread_once(&_M_once, - __gnu_internal::_GLIBCXX_mutex_address_init) != 0 - && __gthread_active_p()) - abort(); - _M_init_flag = 1; - } - __gthread_mutex_unlock(&__gnu_internal::_GLIBCXX_mutex); -#endif - } - - void - _M_acquire_lock() - { -#if !defined(__GTHREAD_MUTEX_INIT) && defined(__GTHREAD_MUTEX_INIT_FUNCTION) - if (!_M_init_flag) _M_initialize(); -#endif - __gthread_mutex_lock(&_M_lock); - } - - void - _M_release_lock() - { -#if !defined(__GTHREAD_MUTEX_INIT) && defined(__GTHREAD_MUTEX_INIT_FUNCTION) - if (!_M_init_flag) _M_initialize(); -#endif - __gthread_mutex_unlock(&_M_lock); - } - }; - -#ifdef __GTHREAD_MUTEX_INIT -#define __STL_MUTEX_INITIALIZER = { __GTHREAD_MUTEX_INIT } -#elif defined(__GTHREAD_MUTEX_INIT_FUNCTION) -#ifdef __GTHREAD_MUTEX_INIT_DEFAULT -#define __STL_MUTEX_INITIALIZER \ - = { 0, __GTHREAD_ONCE_INIT, __GTHREAD_MUTEX_INIT_DEFAULT } -#else -#define __STL_MUTEX_INITIALIZER = { 0, __GTHREAD_ONCE_INIT } -#endif -#endif -} // namespace __gnu_cxx - -#endif |