109 lines
2.7 KiB
C++
109 lines
2.7 KiB
C++
/*
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* Copyright (C) 2006-2016 Jacek Sieka, arnetheduck on gmail point com
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#ifndef ADCHPP_MUTEX_H_
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#define ADCHPP_MUTEX_H_
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#include "Thread.h"
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namespace adchpp {
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template<typename Mutex>
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class ScopedLock {
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public:
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ScopedLock(Mutex& m_) : m(m_) { m.lock(); }
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~ScopedLock() { m.unlock(); }
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private:
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Mutex& m;
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};
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#if defined(_WIN32)
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class RecursiveMutex : private boost::noncopyable {
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public:
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RecursiveMutex() { InitializeCriticalSection(&cs); }
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~RecursiveMutex() { DeleteCriticalSection(&cs); }
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void lock() { EnterCriticalSection(&cs); }
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void unlock() { LeaveCriticalSection(&cs); }
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typedef ScopedLock<RecursiveMutex> Lock;
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private:
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CRITICAL_SECTION cs;
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};
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class FastMutex : private boost::noncopyable {
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public:
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FastMutex() : val(0) { }
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~FastMutex() { }
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void lock() { while(InterlockedExchange(&val, 1) == 1) Thread::yield(); }
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void unlock() { InterlockedExchange(&val, 0); }
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typedef ScopedLock<FastMutex> Lock;
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private:
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long val;
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};
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#elif defined(HAVE_PTHREAD)
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class RecursiveMutex : private boost::noncopyable {
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public:
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RecursiveMutex() throw() {
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pthread_mutexattr_t attr;
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pthread_mutexattr_init(&attr);
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pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_RECURSIVE);
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pthread_mutex_init(&mtx, &attr);
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pthread_mutexattr_destroy(&attr);
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}
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~RecursiveMutex() throw() { pthread_mutex_destroy(&mtx); }
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void lock() throw() { pthread_mutex_lock(&mtx); }
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void unlock() throw() { pthread_mutex_unlock(&mtx); }
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typedef ScopedLock<RecursiveMutex> Lock;
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private:
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pthread_mutex_t mtx;
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};
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class FastMutex : private boost::noncopyable {
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public:
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FastMutex() throw() {
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pthread_mutexattr_t attr;
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pthread_mutexattr_init(&attr);
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pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_NORMAL);
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pthread_mutex_init(&mtx, &attr);
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pthread_mutexattr_destroy(&attr);
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}
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~FastMutex() throw() { pthread_mutex_destroy(&mtx); }
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void lock() throw() { pthread_mutex_lock(&mtx); }
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void unlock() throw() { pthread_mutex_unlock(&mtx); }
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typedef ScopedLock<FastMutex> Lock;
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private:
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pthread_mutex_t mtx;
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};
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#else
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#error No mutex found
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#endif
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}
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#endif /*MUTEX_H_*/
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