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239 lines
5.7 KiB
239 lines
5.7 KiB
// -*- C++ -*-
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// Copyright (C) 2009-2010, 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_IMPL_H
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#define LOG4CPLUS_THREAD_SYNCPRIMS_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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#if ! defined (INSIDE_LOG4CPLUS)
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# error "This header must not be be used outside log4cplus' implementation files."
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#endif
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#include <stdexcept>
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#include <log4cplus/thread/syncprims.h>
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#if defined (_WIN32)
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# include <log4cplus/config/windowsh-inc.h>
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#elif defined (LOG4CPLUS_USE_PTHREADS)
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# include <errno.h>
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# include <pthread.h>
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# include <semaphore.h>
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# if defined (LOG4CPLUS_USE_NAMED_POSIX_SEMAPHORE)
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# include <sstream>
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# include <string>
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# if defined (LOG4CPLUS_HAVE_SYS_TYPES_H)
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# include <sys/types.h>
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# endif
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# if defined (LOG4CPLUS_HAVE_UNISTD_H)
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# include <unistd.h>
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# endif
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# endif
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# if defined (LOG4CPLUS_HAVE_FCNTL_H)
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# include <fcntl.h>
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# endif
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# include <log4cplus/helpers/timehelper.h>
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#endif
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namespace log4cplus { namespace thread { namespace impl {
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LOG4CPLUS_EXPORT void syncprims_throw_exception (char const * const msg,
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char const * const file, int line) LOG4CPLUS_ATTRIBUTE_NORETURN;
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#define LOG4CPLUS_THROW_RTE(msg) \
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do { syncprims_throw_exception (msg, __FILE__, __LINE__); } while (0)
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class ManualResetEvent;
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class Mutex
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: public MutexImplBase
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{
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public:
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explicit Mutex (log4cplus::thread::Mutex::Type);
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~Mutex ();
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void lock () const;
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void unlock () const;
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private:
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#if defined (LOG4CPLUS_USE_PTHREADS)
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mutable pthread_mutex_t mtx;
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friend class ManualResetEvent;
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#elif defined (LOG4CPLUS_USE_WIN32_THREADS)
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mutable CRITICAL_SECTION cs;
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#endif
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Mutex (Mutex const &);
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Mutex & operator = (Mutex &);
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};
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typedef SyncGuard<Mutex> MutexGuard;
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class Semaphore
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: public SemaphoreImplBase
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{
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public:
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Semaphore (unsigned max, unsigned initial);
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~Semaphore ();
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void lock () const;
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void unlock () const;
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private:
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#if defined (LOG4CPLUS_USE_PTHREADS)
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# if defined (LOG4CPLUS_USE_NAMED_POSIX_SEMAPHORE)
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sem_t * sem;
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# else
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mutable sem_t sem;
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# endif
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#elif defined (LOG4CPLUS_USE_WIN32_THREADS)
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HANDLE sem;
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#endif
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Semaphore (Semaphore const &);
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Semaphore & operator = (Semaphore const &);
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};
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typedef SyncGuard<Semaphore> SemaphoreGuard;
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class FairMutex
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: public FairMutexImplBase
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{
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public:
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FairMutex ();
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~FairMutex ();
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void lock () const;
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void unlock () const;
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private:
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#if defined (LOG4CPLUS_USE_PTHREADS)
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Semaphore sem;
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#elif defined (LOG4CPLUS_USE_WIN32_THREADS)
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HANDLE mtx;
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#endif
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FairMutex (FairMutex const &);
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FairMutex & operator = (FairMutex &);
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};
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typedef SyncGuard<FairMutex> FairMutexGuard;
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class ManualResetEvent
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: public ManualResetEventImplBase
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{
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public:
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ManualResetEvent (bool = false);
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~ManualResetEvent ();
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void signal () const;
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void wait () const;
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bool timed_wait (unsigned long msec) const;
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void reset () const;
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private:
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#if defined (LOG4CPLUS_USE_PTHREADS)
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mutable pthread_cond_t cv;
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mutable Mutex mtx;
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mutable volatile unsigned sigcount;
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mutable volatile bool signaled;
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#elif defined (LOG4CPLUS_USE_WIN32_THREADS)
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HANDLE ev;
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#endif
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ManualResetEvent (ManualResetEvent const &);
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ManualResetEvent & operator = (ManualResetEvent const &);
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};
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class SharedMutex
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: public SharedMutexImplBase
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{
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public:
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SharedMutex ();
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~SharedMutex ();
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void rdlock () const;
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void wrlock () const;
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void rdunlock () const;
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void wrunlock () const;
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private:
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#if defined (LOG4CPLUS_POOR_MANS_SHAREDMUTEX)
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Mutex m1;
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Mutex m2;
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Mutex m3;
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Semaphore w;
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mutable unsigned writer_count;
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Semaphore r;
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mutable unsigned reader_count;
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#elif defined (LOG4CPLUS_USE_PTHREADS)
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void unlock () const;
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mutable pthread_rwlock_t rwl;
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#elif defined (LOG4CPLUS_USE_SRW_LOCK)
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mutable SRWLOCK srwl;
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#endif
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SharedMutex (SharedMutex const &);
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SharedMutex & operator = (SharedMutex const &);
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};
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} } } // namespace log4cplus { namespace thread { namespace impl {
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// Include the appropriate implementations of the classes declared
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// above.
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#if defined (LOG4CPLUS_USE_PTHREADS)
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# include <log4cplus/thread/impl/syncprims-pthreads.h>
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#elif defined (LOG4CPLUS_USE_WIN32_THREADS)
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# include <log4cplus/thread/impl/syncprims-win32.h>
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#endif
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#undef LOG4CPLUS_THROW_RTE
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#endif // LOG4CPLUS_THREAD_SYNCPRIMS_IMPL_H
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