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comparison: nsprpub/pr/src/cplus/rccv.h
nsprpub/pr/src/cplus/rccv.h
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| 1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ | |
| 2 /* This Source Code Form is subject to the terms of the Mozilla Public | |
| 3 * License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 4 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 5 | |
| 6 /* | |
| 7 ** RCCondition - C++ wrapper around NSPR's PRCondVar | |
| 8 ** | |
| 9 ** Conditions have a notion of timeouts. A thread that waits on a condition | |
| 10 ** will resume execution when the condition is notified OR when a specified | |
| 11 ** interval of time has expired. | |
| 12 ** | |
| 13 ** Most applications don't adjust the timeouts on conditions. The literature | |
| 14 ** would argue that all threads waiting on a single condition must have the | |
| 15 ** same semantics. But if an application wishes to modify the timeout with | |
| 16 ** (perhaps) each wait call, that modification should be done consistantly | |
| 17 ** and under protection of the condition's associated lock. | |
| 18 ** | |
| 19 ** The default timeout is infinity. | |
| 20 */ | |
| 21 | |
| 22 #if defined(_RCCOND_H) | |
| 23 #else | |
| 24 #define _RCCOND_H | |
| 25 | |
| 26 #include "rclock.h" | |
| 27 #include "rcbase.h" | |
| 28 #include "rcinrval.h" | |
| 29 | |
| 30 struct PRCondVar; | |
| 31 | |
| 32 class PR_IMPLEMENT(RCCondition): public RCBase | |
| 33 { | |
| 34 public: | |
| 35 RCCondition(RCLock*); /* associates CV with a lock and infinite tmo */ | |
| 36 virtual ~RCCondition(); | |
| 37 | |
| 38 virtual PRStatus Wait(); /* applies object's current timeout */ | |
| 39 | |
| 40 virtual PRStatus Notify(); /* perhaps ready one thread */ | |
| 41 virtual PRStatus Broadcast(); /* perhaps ready many threads */ | |
| 42 | |
| 43 virtual PRStatus SetTimeout(const RCInterval&); | |
| 44 /* set object's current timeout value */ | |
| 45 | |
| 46 private: | |
| 47 PRCondVar *cv; | |
| 48 RCInterval timeout; | |
| 49 | |
| 50 RCCondition(); | |
| 51 RCCondition(const RCCondition&); | |
| 52 void operator=(const RCCondition&); | |
| 53 | |
| 54 public: | |
| 55 RCInterval GetTimeout() const; | |
| 56 }; /* RCCondition */ | |
| 57 | |
| 58 inline RCCondition::RCCondition(): RCBase() { } | |
| 59 inline RCCondition::RCCondition(const RCCondition&): RCBase() { } | |
| 60 inline void RCCondition::operator=(const RCCondition&) { } | |
| 61 | |
| 62 #endif /* defined(_RCCOND_H) */ | |
| 63 | |
| 64 /* RCCond.h */ |
