diff options
Diffstat (limited to 'mozilla/nsprpub/pr/src/cplus/rclock.h')
-rw-r--r-- | mozilla/nsprpub/pr/src/cplus/rclock.h | 98 |
1 files changed, 98 insertions, 0 deletions
diff --git a/mozilla/nsprpub/pr/src/cplus/rclock.h b/mozilla/nsprpub/pr/src/cplus/rclock.h new file mode 100644 index 0000000..9e20ef0 --- /dev/null +++ b/mozilla/nsprpub/pr/src/cplus/rclock.h @@ -0,0 +1,98 @@ +/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/* ***** BEGIN LICENSE BLOCK ***** + * Version: MPL 1.1/GPL 2.0/LGPL 2.1 + * + * The contents of this file are subject to the Mozilla Public License Version + * 1.1 (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.mozilla.org/MPL/ + * + * Software distributed under the License is distributed on an "AS IS" basis, + * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License + * for the specific language governing rights and limitations under the + * License. + * + * The Original Code is the Netscape Portable Runtime (NSPR). + * + * The Initial Developer of the Original Code is + * Netscape Communications Corporation. + * Portions created by the Initial Developer are Copyright (C) 1998-2000 + * the Initial Developer. All Rights Reserved. + * + * Contributor(s): + * + * Alternatively, the contents of this file may be used under the terms of + * either the GNU General Public License Version 2 or later (the "GPL"), or + * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"), + * in which case the provisions of the GPL or the LGPL are applicable instead + * of those above. If you wish to allow use of your version of this file only + * under the terms of either the GPL or the LGPL, and not to allow others to + * use your version of this file under the terms of the MPL, indicate your + * decision by deleting the provisions above and replace them with the notice + * and other provisions required by the GPL or the LGPL. If you do not delete + * the provisions above, a recipient may use your version of this file under + * the terms of any one of the MPL, the GPL or the LGPL. + * + * ***** END LICENSE BLOCK ***** */ + +/* +** C++ access to NSPR locks (PRLock) +*/ + +#if defined(_RCLOCK_H) +#else +#define _RCLOCK_H + +#include "rcbase.h" + +#include <prlock.h> + +class PR_IMPLEMENT(RCLock): public RCBase +{ +public: + RCLock(); + virtual ~RCLock(); + + void Acquire(); /* non-reentrant */ + void Release(); /* should be by owning thread */ + + friend class RCCondition; + +private: + RCLock(const RCLock&); /* can't do that */ + void operator=(const RCLock&); /* nor that */ + + PRLock *lock; +}; /* RCLock */ + +/* +** Class: RCEnter +** +** In scope locks. You can only allocate them on the stack. The language +** will insure that they get released (by calling the destructor) when +** the thread leaves scope, even if via an exception. +*/ +class PR_IMPLEMENT(RCEnter) +{ +public: + ~RCEnter(); /* releases the lock */ + RCEnter(RCLock*); /* acquires the lock */ + +private: + RCLock *lock; + + RCEnter(); + RCEnter(const RCEnter&); + void operator=(const RCEnter&); + + void *operator new(PRSize) { return NULL; } + void operator delete(void*) { } +}; /* RCEnter */ + + +inline RCEnter::RCEnter(RCLock* ml) { lock = ml; lock->Acquire(); } +inline RCEnter::~RCEnter() { lock->Release(); lock = NULL; } + +#endif /* defined(_RCLOCK_H) */ + +/* RCLock.h */ |