1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/nsprpub/pr/src/cplus/rccv.h Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,64 @@
1.4 +/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
1.5 +/* This Source Code Form is subject to the terms of the Mozilla Public
1.6 + * License, v. 2.0. If a copy of the MPL was not distributed with this
1.7 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
1.8 +
1.9 +/*
1.10 +** RCCondition - C++ wrapper around NSPR's PRCondVar
1.11 +**
1.12 +** Conditions have a notion of timeouts. A thread that waits on a condition
1.13 +** will resume execution when the condition is notified OR when a specified
1.14 +** interval of time has expired.
1.15 +**
1.16 +** Most applications don't adjust the timeouts on conditions. The literature
1.17 +** would argue that all threads waiting on a single condition must have the
1.18 +** same semantics. But if an application wishes to modify the timeout with
1.19 +** (perhaps) each wait call, that modification should be done consistantly
1.20 +** and under protection of the condition's associated lock.
1.21 +**
1.22 +** The default timeout is infinity.
1.23 +*/
1.24 +
1.25 +#if defined(_RCCOND_H)
1.26 +#else
1.27 +#define _RCCOND_H
1.28 +
1.29 +#include "rclock.h"
1.30 +#include "rcbase.h"
1.31 +#include "rcinrval.h"
1.32 +
1.33 +struct PRCondVar;
1.34 +
1.35 +class PR_IMPLEMENT(RCCondition): public RCBase
1.36 +{
1.37 +public:
1.38 + RCCondition(RCLock*); /* associates CV with a lock and infinite tmo */
1.39 + virtual ~RCCondition();
1.40 +
1.41 + virtual PRStatus Wait(); /* applies object's current timeout */
1.42 +
1.43 + virtual PRStatus Notify(); /* perhaps ready one thread */
1.44 + virtual PRStatus Broadcast(); /* perhaps ready many threads */
1.45 +
1.46 + virtual PRStatus SetTimeout(const RCInterval&);
1.47 + /* set object's current timeout value */
1.48 +
1.49 +private:
1.50 + PRCondVar *cv;
1.51 + RCInterval timeout;
1.52 +
1.53 + RCCondition();
1.54 + RCCondition(const RCCondition&);
1.55 + void operator=(const RCCondition&);
1.56 +
1.57 +public:
1.58 + RCInterval GetTimeout() const;
1.59 +}; /* RCCondition */
1.60 +
1.61 +inline RCCondition::RCCondition(): RCBase() { }
1.62 +inline RCCondition::RCCondition(const RCCondition&): RCBase() { }
1.63 +inline void RCCondition::operator=(const RCCondition&) { }
1.64 +
1.65 +#endif /* defined(_RCCOND_H) */
1.66 +
1.67 +/* RCCond.h */
