/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ /* * This file is part of the LibreOffice project. * * This Source Code Form is subject to the terms of the Mozilla Public * License, v. 2.0. If a copy of the MPL was not distributed with this * file, You can obtain one at http://mozilla.org/MPL/2.0/. * * This file incorporates work covered by the following license notice: * * Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements. See the NOTICE file distributed * with this work for additional information regarding copyright * ownership. The ASF licenses this file to you under the Apache * License, Version 2.0 (the "License"); you may not use this file * except in compliance with the License. You may obtain a copy of * the License at http://www.apache.org/licenses/LICENSE-2.0 . */ #ifndef INCLUDED_OSL_MUTEX_HXX #define INCLUDED_OSL_MUTEX_HXX #include "osl/mutex.h" namespace osl { /** A mutual exclusion synchronization object */ class SAL_WARN_UNUSED Mutex { public: /** Create a mutex. @return 0 if the mutex could not be created, otherwise a handle to the mutex. @see ::osl_createMutex() */ Mutex() { mutex = osl_createMutex(); } /** Release the OS-structures and free mutex data-structure. @see ::osl_destroyMutex() */ ~Mutex() { osl_destroyMutex(mutex); } /** Acquire the mutex, block if already acquired by another thread. @return false if system-call fails. @see ::osl_acquireMutex() */ bool acquire() { return osl_acquireMutex(mutex); } /** Try to acquire the mutex without blocking. @return false if it could not be acquired. @see ::osl_tryToAcquireMutex() */ bool tryToAcquire() { return osl_tryToAcquireMutex(mutex); } /** Release the mutex. @return false if system-call fails. @see ::osl_releaseMutex() */ bool release() { return osl_releaseMutex(mutex); } /** Returns a global static mutex object. The global and static mutex object can be used to initialize other static objects in a thread safe manner. @return the global mutex object @see ::osl_getGlobalMutex() */ static Mutex * getGlobalMutex() { return reinterpret_cast(osl_getGlobalMutex()); } private: oslMutex mutex; /** The underlying oslMutex has no reference count. Since the underlying oslMutex is not a reference counted object, copy constructed Mutex may work on an already destructed oslMutex object. */ Mutex(const Mutex&) SAL_DELETED_FUNCTION; /** This assignment operator is deleted for the same reason as the copy constructor. */ Mutex& operator= (const Mutex&) SAL_DELETED_FUNCTION; }; /** A helper class for mutex objects and interfaces. */ template class Guard { private: Guard( const Guard& ) SAL_DELETED_FUNCTION; const Guard& operator = ( const Guard& ) SAL_DELETED_FUNCTION; protected: T * pT; public: /** Acquires the object specified as parameter. */ Guard(T * pT_) : pT(pT_) { pT->acquire(); } /** Acquires the object specified as parameter. */ Guard(T & t) : pT(&t) { pT->acquire(); } /** Releases the mutex or interface. */ ~Guard() { pT->release(); } }; /** A helper class for mutex objects and interfaces. */ template class ClearableGuard { private: ClearableGuard( const ClearableGuard& ) SAL_DELETED_FUNCTION; const ClearableGuard& operator = ( const ClearableGuard& ) SAL_DELETED_FUNCTION; protected: T * pT; public: /** Acquires the object specified as parameter. */ ClearableGuard(T * pT_) : pT(pT_) { pT->acquire(); } /** Acquires the object specified as parameter. */ ClearableGuard(T & t) : pT(&t) { pT->acquire(); } /** Releases the mutex or interface if not already released by clear(). */ ~ClearableGuard() { if (pT) pT->release(); } /** Releases the mutex or interface. */ void clear() { if(pT) { pT->release(); pT = NULL; } } }; /** A helper class for mutex objects and interfaces. */ template< class T > class ResettableGuard : public ClearableGuard< T > { private: ResettableGuard(ResettableGuard &) SAL_DELETED_FUNCTION; void operator =(ResettableGuard &) SAL_DELETED_FUNCTION; protected: T* pResetT; public: /** Acquires the object specified as parameter. */ ResettableGuard( T* pT_ ) : ClearableGuard( pT_ ), pResetT( pT_ ) {} /** Acquires the object specified as parameter. */ ResettableGuard( T& rT ) : ClearableGuard( rT ), pResetT( &rT ) {} /** Re-acquires the mutex or interface. */ void reset() { if( pResetT ) { this->pT = pResetT; this->pT->acquire(); } } }; typedef Guard MutexGuard; typedef ClearableGuard ClearableMutexGuard; typedef ResettableGuard< Mutex > ResettableMutexGuard; } #endif // INCLUDED_OSL_MUTEX_HXX /* vim:set shiftwidth=4 softtabstop=4 expandtab: */ ports'>distro/lhm/libreoffice-5-2+backports LibreOffice 核心代码仓库文档基金会

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Age	Commit message (Expand)	Author
2020-03-12	Revert "loplugin:constfields in package..registry"	Noel Grandin