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| author | Remko Tronçon <git@el-tramo.be> | 2009-06-01 08:48:42 (GMT) |
|---|---|---|
| committer | Remko Tronçon <git@el-tramo.be> | 2009-06-01 09:24:28 (GMT) |
| commit | 2812bddd81f8a1b804c7460f4e14cd0aa393d129 (patch) | |
| tree | d46294f35150c4f0f43deaf2d31fceaf945ae715 /3rdParty/Boost/boost/thread/barrier.hpp | |
| download | swift-2812bddd81f8a1b804c7460f4e14cd0aa393d129.zip swift-2812bddd81f8a1b804c7460f4e14cd0aa393d129.tar.bz2 | |
Import.
Diffstat (limited to '3rdParty/Boost/boost/thread/barrier.hpp')
| -rw-r--r-- | 3rdParty/Boost/boost/thread/barrier.hpp | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/3rdParty/Boost/boost/thread/barrier.hpp b/3rdParty/Boost/boost/thread/barrier.hpp new file mode 100644 index 0000000..546f5e9 --- /dev/null +++ b/3rdParty/Boost/boost/thread/barrier.hpp @@ -0,0 +1,63 @@ +// Copyright (C) 2002-2003 +// David Moore, William E. Kempf +// Copyright (C) 2007-8 Anthony Williams +// +// Distributed under 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) + +#ifndef BOOST_BARRIER_JDM030602_HPP +#define BOOST_BARRIER_JDM030602_HPP + +#include <boost/thread/detail/config.hpp> + +#include <boost/thread/mutex.hpp> +#include <boost/thread/condition_variable.hpp> +#include <string> +#include <stdexcept> + +#include <boost/config/abi_prefix.hpp> + +namespace boost +{ + + class barrier + { + public: + barrier(unsigned int count) + : m_threshold(count), m_count(count), m_generation(0) + { + if (count == 0) + throw std::invalid_argument("count cannot be zero."); + } + + bool wait() + { + boost::mutex::scoped_lock lock(m_mutex); + unsigned int gen = m_generation; + + if (--m_count == 0) + { + m_generation++; + m_count = m_threshold; + m_cond.notify_all(); + return true; + } + + while (gen == m_generation) + m_cond.wait(lock); + return false; + } + + private: + mutex m_mutex; + condition_variable m_cond; + unsigned int m_threshold; + unsigned int m_count; + unsigned int m_generation; + }; + +} // namespace boost + +#include <boost/config/abi_suffix.hpp> + +#endif |