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authorLorry Tar Creator <lorry-tar-importer@baserock.org>2011-08-09 15:52:57 +0000
committerLorry <lorry@roadtrain.codethink.co.uk>2012-09-25 08:55:51 +0000
commitc52067ca0b79daf6ffae5376481e6fef74849254 (patch)
tree9a4b19451eb85dcd6e16afb9d49a45a2f4f5aa83 /mozilla/nsprpub/pr/src/cplus/rccv.h
parent40d4517c5b760454c076064fac192b28a22e7a37 (diff)
downloadnspr-c52067ca0b79daf6ffae5376481e6fef74849254.tar.gz
Imported from /srv/lorry/lorry-area/nspr/nspr-4.8.9.tar.gz.HEADnspr-4.8.9master
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+/* -*- 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 ***** */
+
+/*
+** RCCondition - C++ wrapper around NSPR's PRCondVar
+**
+** Conditions have a notion of timeouts. A thread that waits on a condition
+** will resume execution when the condition is notified OR when a specified
+** interval of time has expired.
+**
+** Most applications don't adjust the timeouts on conditions. The literature
+** would argue that all threads waiting on a single condition must have the
+** same semantics. But if an application wishes to modify the timeout with
+** (perhaps) each wait call, that modification should be done consistantly
+** and under protection of the condition's associated lock.
+**
+** The default timeout is infinity.
+*/
+
+#if defined(_RCCOND_H)
+#else
+#define _RCCOND_H
+
+#include "rclock.h"
+#include "rcbase.h"
+#include "rcinrval.h"
+
+struct PRCondVar;
+
+class PR_IMPLEMENT(RCCondition): public RCBase
+{
+public:
+ RCCondition(RCLock*); /* associates CV with a lock and infinite tmo */
+ virtual ~RCCondition();
+
+ virtual PRStatus Wait(); /* applies object's current timeout */
+
+ virtual PRStatus Notify(); /* perhaps ready one thread */
+ virtual PRStatus Broadcast(); /* perhaps ready many threads */
+
+ virtual PRStatus SetTimeout(const RCInterval&);
+ /* set object's current timeout value */
+
+private:
+ PRCondVar *cv;
+ RCInterval timeout;
+
+ RCCondition();
+ RCCondition(const RCCondition&);
+ void operator=(const RCCondition&);
+
+public:
+ RCInterval GetTimeout() const;
+}; /* RCCondition */
+
+inline RCCondition::RCCondition(): RCBase() { }
+inline RCCondition::RCCondition(const RCCondition&): RCBase() { }
+inline void RCCondition::operator=(const RCCondition&) { }
+
+#endif /* defined(_RCCOND_H) */
+
+/* RCCond.h */