From 9b1b081cfdb1c0fb6457278775e0823f8bc10f62 Mon Sep 17 00:00:00 2001 From: Unit 193 Date: Wed, 25 Apr 2018 18:07:30 -0400 Subject: Import Upstream version 2.0.0+dfsg --- src/lib/mt/Lock.h | 49 +++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 49 insertions(+) create mode 100644 src/lib/mt/Lock.h (limited to 'src/lib/mt/Lock.h') diff --git a/src/lib/mt/Lock.h b/src/lib/mt/Lock.h new file mode 100644 index 0000000..4a3f311 --- /dev/null +++ b/src/lib/mt/Lock.h @@ -0,0 +1,49 @@ +/* + * barrier -- mouse and keyboard sharing utility + * Copyright (C) 2012-2016 Symless Ltd. + * Copyright (C) 2002 Chris Schoeneman + * + * This package is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * found in the file LICENSE that should have accompanied this file. + * + * This package is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +#pragma once + +#include "common/common.h" + +class Mutex; +class CondVarBase; + +//! Mutual exclusion lock utility +/*! +This class locks a mutex or condition variable in the c'tor and unlocks +it in the d'tor. It's easier and safer than manually locking and +unlocking since unlocking must usually be done no matter how a function +exits (including by unwinding due to an exception). +*/ +class Lock { +public: + //! Lock the mutex \c mutex + Lock(const Mutex* mutex); + //! Lock the condition variable \c cv + Lock(const CondVarBase* cv); + //! Unlock the mutex or condition variable + ~Lock(); + +private: + // not implemented + Lock(const Lock&); + Lock& operator=(const Lock&); + +private: + const Mutex* m_mutex; +}; -- cgit v1.2.3