360 lines
7.1 KiB
C++
360 lines
7.1 KiB
C++
// -*- C++ -*-
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// Copyright (C) 2010-2017, Vaclav Haisman. All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without modifica-
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// tion, are permitted provided that the following conditions are met:
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//
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// 1. Redistributions of source code must retain the above copyright notice,
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// this list of conditions and the following disclaimer.
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//
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// 2. Redistributions in binary form must reproduce the above copyright notice,
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// this list of conditions and the following disclaimer in the documentation
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// and/or other materials provided with the distribution.
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//
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// THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES,
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// INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
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// FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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// APACHE SOFTWARE FOUNDATION OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
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// INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLU-
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// DING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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// OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
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// ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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// THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#ifndef LOG4CPLUS_THREAD_SYNCPRIMS_PUB_IMPL_H
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#define LOG4CPLUS_THREAD_SYNCPRIMS_PUB_IMPL_H
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#include <log4cplus/config.hxx>
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#if defined (LOG4CPLUS_HAVE_PRAGMA_ONCE)
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#pragma once
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#endif
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#include <algorithm>
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#if (defined (LOG4CPLUS_INLINES_ARE_EXPORTED) \
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&& defined (LOG4CPLUS_BUILD_DLL)) \
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|| defined (LOG4CPLUS_ENABLE_SYNCPRIMS_PUB_IMPL)
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#include <log4cplus/thread/syncprims.h>
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#if ! defined (LOG4CPLUS_SINGLE_THREADED)
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# include <log4cplus/thread/impl/syncprims-impl.h>
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#endif
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#define LOG4CPLUS_THROW_RTE(msg) \
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do { log4cplus::thread::impl::syncprims_throw_exception (msg, __FILE__, \
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__LINE__); } while (0)
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namespace log4cplus { namespace thread {
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namespace impl
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{
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LOG4CPLUS_EXPORT void LOG4CPLUS_ATTRIBUTE_NORETURN
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syncprims_throw_exception(char const * const msg,
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char const * const file, int line);
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}
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//
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//
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//
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LOG4CPLUS_INLINE_EXPORT
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SimpleMutex::SimpleMutex ()
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LOG4CPLUS_THREADED (: mtx ())
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{ }
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LOG4CPLUS_INLINE_EXPORT
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SimpleMutex::~SimpleMutex ()
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{ }
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LOG4CPLUS_INLINE_EXPORT
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void
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SimpleMutex::lock () const
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{
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LOG4CPLUS_THREADED (mtx.lock ());
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}
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LOG4CPLUS_INLINE_EXPORT
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bool
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SimpleMutex::try_lock () const
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{
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#if defined (LOG4CPLUS_SINGLE_THREADED)
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return true;
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#else
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return mtx.try_lock ();
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#endif
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}
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LOG4CPLUS_INLINE_EXPORT
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void
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SimpleMutex::unlock () const
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{
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LOG4CPLUS_THREADED (mtx.unlock ());
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}
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//
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//
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//
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LOG4CPLUS_INLINE_EXPORT
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Mutex::Mutex ()
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LOG4CPLUS_THREADED (: mtx ())
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{ }
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LOG4CPLUS_INLINE_EXPORT
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Mutex::~Mutex ()
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{ }
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LOG4CPLUS_INLINE_EXPORT
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void
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Mutex::lock () const
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{
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LOG4CPLUS_THREADED (mtx.lock ());
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}
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LOG4CPLUS_INLINE_EXPORT
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void
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Mutex::unlock () const
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{
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LOG4CPLUS_THREADED (mtx.unlock ());
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}
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//
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//
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//
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LOG4CPLUS_INLINE_EXPORT
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Semaphore::Semaphore (unsigned LOG4CPLUS_THREADED (max_),
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unsigned LOG4CPLUS_THREADED (initial))
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#if ! defined (LOG4CPLUS_SINGLE_THREADED)
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: maximum(max_)
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, val ((std::min) (maximum, initial))
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#endif
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{ }
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LOG4CPLUS_INLINE_EXPORT
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Semaphore::~Semaphore ()
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{ }
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LOG4CPLUS_INLINE_EXPORT
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void
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Semaphore::unlock () const
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{
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#if ! defined (LOG4CPLUS_SINGLE_THREADED)
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std::lock_guard<std::mutex> guard (mtx);
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if (val >= maximum)
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LOG4CPLUS_THROW_RTE ("Semaphore::unlock(): val >= max");
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++val;
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cv.notify_all ();
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#endif
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}
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LOG4CPLUS_INLINE_EXPORT
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void
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Semaphore::lock () const
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{
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#if ! defined (LOG4CPLUS_SINGLE_THREADED)
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std::unique_lock<std::mutex> guard (mtx);
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if (LOG4CPLUS_UNLIKELY(val > maximum))
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LOG4CPLUS_THROW_RTE ("Semaphore::unlock(): val > max");
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while (val == 0)
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cv.wait (guard);
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--val;
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if (LOG4CPLUS_UNLIKELY(val >= maximum))
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LOG4CPLUS_THROW_RTE ("Semaphore::unlock(): val >= max");
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#endif
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}
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//
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//
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//
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LOG4CPLUS_INLINE_EXPORT
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ManualResetEvent::ManualResetEvent (bool LOG4CPLUS_THREADED (sig))
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#if ! defined (LOG4CPLUS_SINGLE_THREADED)
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: signaled (sig)
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, sigcount (0)
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#endif
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{ }
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LOG4CPLUS_INLINE_EXPORT
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ManualResetEvent::~ManualResetEvent ()
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{ }
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LOG4CPLUS_INLINE_EXPORT
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void
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ManualResetEvent::signal () const
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{
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#if ! defined (LOG4CPLUS_SINGLE_THREADED)
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std::unique_lock<std::mutex> guard (mtx);
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signaled = true;
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sigcount += 1;
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cv.notify_all ();
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#endif
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}
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LOG4CPLUS_INLINE_EXPORT
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void
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ManualResetEvent::wait () const
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{
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#if ! defined (LOG4CPLUS_SINGLE_THREADED)
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std::unique_lock<std::mutex> guard (mtx);
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if (! signaled)
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{
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unsigned prev_count = sigcount;
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do
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{
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cv.wait (guard);
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}
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while (prev_count == sigcount);
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}
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#endif
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}
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LOG4CPLUS_INLINE_EXPORT
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bool
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ManualResetEvent::timed_wait (unsigned long LOG4CPLUS_THREADED (msec)) const
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{
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#if defined (LOG4CPLUS_SINGLE_THREADED)
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return true;
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#else
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std::unique_lock<std::mutex> guard (mtx);
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if (! signaled)
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{
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unsigned prev_count = sigcount;
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std::chrono::steady_clock::time_point const wait_until_time
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= std::chrono::steady_clock::now ()
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+ std::chrono::milliseconds (msec);
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do
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{
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int ret = static_cast<int>(
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cv.wait_until (guard, wait_until_time));
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switch (ret)
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{
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case static_cast<int>(std::cv_status::no_timeout):
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break;
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case static_cast<int>(std::cv_status::timeout):
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return false;
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default:
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guard.unlock ();
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guard.release ();
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LOG4CPLUS_THROW_RTE ("ManualResetEvent::timed_wait");
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}
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}
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while (prev_count == sigcount);
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}
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return true;
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#endif
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}
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LOG4CPLUS_INLINE_EXPORT
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void
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ManualResetEvent::reset () const
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{
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#if ! defined (LOG4CPLUS_SINGLE_THREADED)
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std::lock_guard<std::mutex> guard (mtx);
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signaled = false;
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#endif
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}
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//
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//
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//
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LOG4CPLUS_INLINE_EXPORT
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SharedMutexImplBase::~SharedMutexImplBase ()
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{ }
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//
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//
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//
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LOG4CPLUS_INLINE_EXPORT
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SharedMutex::SharedMutex ()
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: sm (LOG4CPLUS_THREADED (new impl::SharedMutex))
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{ }
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LOG4CPLUS_INLINE_EXPORT
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SharedMutex::~SharedMutex ()
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{
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LOG4CPLUS_THREADED (delete static_cast<impl::SharedMutex *>(sm));
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}
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LOG4CPLUS_INLINE_EXPORT
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void
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SharedMutex::rdlock () const
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{
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LOG4CPLUS_THREADED (static_cast<impl::SharedMutex *>(sm)->rdlock ());
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}
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LOG4CPLUS_INLINE_EXPORT
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void
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SharedMutex::wrlock () const
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{
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LOG4CPLUS_THREADED (static_cast<impl::SharedMutex *>(sm)->wrlock ());
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}
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LOG4CPLUS_INLINE_EXPORT
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void
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SharedMutex::rdunlock () const
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{
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LOG4CPLUS_THREADED (static_cast<impl::SharedMutex *>(sm)->rdunlock ());
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}
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LOG4CPLUS_INLINE_EXPORT
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void
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SharedMutex::wrunlock () const
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{
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LOG4CPLUS_THREADED (static_cast<impl::SharedMutex *>(sm)->wrunlock ());
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}
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} } // namespace log4cplus { namespace thread {
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#endif // LOG4CPLUS_ENABLE_SYNCPRIMS_PUB_IMPL
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#endif // LOG4CPLUS_THREAD_SYNCPRIMS_PUB_IMPL_H
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