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authorRemko Tronçon <git@el-tramo.be>2009-06-01 08:48:42 (GMT)
committerRemko Tronçon <git@el-tramo.be>2009-06-01 09:24:28 (GMT)
commit2812bddd81f8a1b804c7460f4e14cd0aa393d129 (patch)
treed46294f35150c4f0f43deaf2d31fceaf945ae715 /3rdParty/Boost/boost/asio/detail/posix_event.hpp
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+//
+// posix_event.hpp
+// ~~~~~~~~~~~~~~~
+//
+// Copyright (c) 2003-2008 Christopher M. Kohlhoff (chris at kohlhoff dot com)
+//
+// 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_ASIO_DETAIL_POSIX_EVENT_HPP
+#define BOOST_ASIO_DETAIL_POSIX_EVENT_HPP
+
+#if defined(_MSC_VER) && (_MSC_VER >= 1200)
+# pragma once
+#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
+
+#include <boost/asio/detail/push_options.hpp>
+
+#include <boost/asio/detail/push_options.hpp>
+#include <boost/config.hpp>
+#include <boost/system/system_error.hpp>
+#include <boost/asio/detail/pop_options.hpp>
+
+#if defined(BOOST_HAS_PTHREADS)
+
+#include <boost/asio/detail/push_options.hpp>
+#include <boost/assert.hpp>
+#include <boost/throw_exception.hpp>
+#include <pthread.h>
+#include <boost/asio/detail/pop_options.hpp>
+
+#include <boost/asio/error.hpp>
+#include <boost/asio/detail/noncopyable.hpp>
+
+namespace boost {
+namespace asio {
+namespace detail {
+
+class posix_event
+ : private noncopyable
+{
+public:
+ // Constructor.
+ posix_event()
+ : signalled_(false)
+ {
+ int error = ::pthread_cond_init(&cond_, 0);
+ if (error != 0)
+ {
+ boost::system::system_error e(
+ boost::system::error_code(error,
+ boost::asio::error::get_system_category()),
+ "event");
+ boost::throw_exception(e);
+ }
+ }
+
+ // Destructor.
+ ~posix_event()
+ {
+ ::pthread_cond_destroy(&cond_);
+ }
+
+ // Signal the event.
+ template <typename Lock>
+ void signal(Lock& lock)
+ {
+ BOOST_ASSERT(lock.locked());
+ (void)lock;
+ signalled_ = true;
+ ::pthread_cond_signal(&cond_); // Ignore EINVAL.
+ }
+
+ // Reset the event.
+ template <typename Lock>
+ void clear(Lock& lock)
+ {
+ BOOST_ASSERT(lock.locked());
+ (void)lock;
+ signalled_ = false;
+ }
+
+ // Wait for the event to become signalled.
+ template <typename Lock>
+ void wait(Lock& lock)
+ {
+ BOOST_ASSERT(lock.locked());
+ while (!signalled_)
+ ::pthread_cond_wait(&cond_, &lock.mutex().mutex_); // Ignore EINVAL.
+ }
+
+private:
+ ::pthread_cond_t cond_;
+ bool signalled_;
+};
+
+} // namespace detail
+} // namespace asio
+} // namespace boost
+
+#endif // defined(BOOST_HAS_PTHREADS)
+
+#include <boost/asio/detail/pop_options.hpp>
+
+#endif // BOOST_ASIO_DETAIL_POSIX_EVENT_HPP