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| author | Remko Tronçon <git@el-tramo.be> | 2009-06-03 21:52:05 (GMT) |
|---|---|---|
| committer | Remko Tronçon <git@el-tramo.be> | 2009-06-09 18:18:53 (GMT) |
| commit | fd89da91d12b270d56f60544cad6f1ddc809af28 (patch) | |
| tree | 77bebb89221cc8023b22efaa0b707cdcd0759b3b /3rdParty/Boost/libs/regex/src/static_mutex.cpp | |
| parent | 3de4268ade36c9292a88b1da7604748a87c65777 (diff) | |
| download | swift-contrib-fd89da91d12b270d56f60544cad6f1ddc809af28.zip swift-contrib-fd89da91d12b270d56f60544cad6f1ddc809af28.tar.bz2 | |
Added Boost.regex.
Diffstat (limited to '3rdParty/Boost/libs/regex/src/static_mutex.cpp')
| -rw-r--r-- | 3rdParty/Boost/libs/regex/src/static_mutex.cpp | 179 |
1 files changed, 179 insertions, 0 deletions
diff --git a/3rdParty/Boost/libs/regex/src/static_mutex.cpp b/3rdParty/Boost/libs/regex/src/static_mutex.cpp new file mode 100644 index 0000000..cef7678 --- /dev/null +++ b/3rdParty/Boost/libs/regex/src/static_mutex.cpp @@ -0,0 +1,179 @@ +/* + * + * Copyright (c) 2004 + * John Maddock + * + * Use, modification and distribution are subject to the + * Boost Software License, Version 1.0. (See accompanying file + * LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) + * + */ + + /* + * LOCATION: see http://www.boost.org for most recent version. + * FILE static_mutex.cpp + * VERSION see <boost/version.hpp> + * DESCRIPTION: Declares static_mutex lock type. + */ + +#define BOOST_REGEX_SOURCE +#include <boost/config.hpp> + +#ifdef BOOST_HAS_THREADS + +#include <boost/regex/pending/static_mutex.hpp> + +#if defined(BOOST_HAS_WINTHREADS) +#ifndef NOMINMAX +# define NOMINMAX +#endif +#define WIN32_LEAN_AND_MEAN +#include <windows.h> +#include <boost/static_assert.hpp> +#endif + + +namespace boost{ + +#if defined(BOOST_HAS_PTHREADS) && defined(PTHREAD_MUTEX_INITIALIZER) + +scoped_static_mutex_lock::scoped_static_mutex_lock(static_mutex& m, bool lk) +: m_mutex(m), m_have_lock(false) +{ + if(lk) + lock(); +} + +scoped_static_mutex_lock::~scoped_static_mutex_lock() +{ + if(m_have_lock) + unlock(); +} + +void scoped_static_mutex_lock::lock() +{ + if(0 == m_have_lock) + { + pthread_mutex_lock(&(m_mutex.m_mutex)); + m_have_lock = true; + } +} + +void scoped_static_mutex_lock::unlock() +{ + if(m_have_lock) + { + pthread_mutex_unlock(&(m_mutex.m_mutex)); + m_have_lock = false; + } +} + +#elif defined(BOOST_HAS_WINTHREADS) + +BOOST_STATIC_ASSERT(sizeof(LONG) == sizeof(boost::int32_t)); + +scoped_static_mutex_lock::scoped_static_mutex_lock(static_mutex& m, bool lk) +: m_mutex(m), m_have_lock(false) +{ + if(lk) + lock(); +} + +scoped_static_mutex_lock::~scoped_static_mutex_lock() +{ + if(m_have_lock) + unlock(); +} + +void scoped_static_mutex_lock::lock() +{ + if(0 == m_have_lock) + { +#if !defined(InterlockedCompareExchangePointer) + while(0 != InterlockedCompareExchange(reinterpret_cast<void**>((boost::uint_least16_t*)&(m_mutex.m_mutex)), (void*)1, 0)) +#else + while(0 != InterlockedCompareExchange(reinterpret_cast<LONG*>(&(m_mutex.m_mutex)), 1, 0)) +#endif + { + Sleep(0); + } + m_have_lock = true; + } +} + +void scoped_static_mutex_lock::unlock() +{ + if(m_have_lock) + { +#if !defined(InterlockedCompareExchangePointer) + InterlockedExchange((LONG*)&(m_mutex.m_mutex), 0); +#else + InterlockedExchange(reinterpret_cast<LONG*>(&(m_mutex.m_mutex)), 0); +#endif + m_have_lock = false; + } +} + +#else +// +// Portable version of a static mutex based on Boost.Thread library: +// +#include <stdlib.h> +#include <boost/assert.hpp> + +boost::recursive_mutex* static_mutex::m_pmutex = 0; +boost::once_flag static_mutex::m_once = BOOST_ONCE_INIT; + +extern "C" BOOST_REGEX_DECL void free_static_mutex() +{ + delete static_mutex::m_pmutex; + static_mutex::m_pmutex = 0; +} + +void static_mutex::init() +{ + m_pmutex = new boost::recursive_mutex(); + int r = atexit(free_static_mutex); + BOOST_ASSERT(0 == r); +} + +scoped_static_mutex_lock::scoped_static_mutex_lock(static_mutex& , bool lk) +: m_plock(0), m_have_lock(false) +{ + if(lk) + lock(); +} + +scoped_static_mutex_lock::~scoped_static_mutex_lock() +{ + if(m_have_lock) + unlock(); + delete m_plock; +} + +void scoped_static_mutex_lock::lock() +{ + if(0 == m_have_lock) + { + boost::call_once(static_mutex::m_once,&static_mutex::init); + if(0 == m_plock) + m_plock = new boost::recursive_mutex::scoped_lock(*static_mutex::m_pmutex, false); + m_plock->lock(); + m_have_lock = true; + } +} + +void scoped_static_mutex_lock::unlock() +{ + if(m_have_lock) + { + m_plock->unlock(); + m_have_lock = false; + } +} + +#endif + +} + +#endif // BOOST_HAS_THREADS |