Security-57031.1.35.tar.gz

[apple/security.git] / libsecurity_asn1 / lib / prmon.h

diff --git a/libsecurity_asn1/lib/prmon.h b/libsecurity_asn1/lib/prmon.h
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-/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
-/* 
- * 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 Netscape are 
- * Copyright (C) 1998-2000 Netscape Communications Corporation.  All
- * Rights Reserved.
- * 
- * Contributor(s):
- * 
- * Alternatively, the contents of this file may be used under the
- * terms of the GNU General Public License Version 2 or later (the
- * "GPL"), in which case the provisions of the GPL are applicable 
- * instead of those above.  If you wish to allow use of your 
- * version of this file only under the terms of the GPL and not to
- * allow others to use your version of this file under the MPL,
- * indicate your decision by deleting the provisions above and
- * replace them with the notice and other provisions required by
- * the GPL.  If you do not delete the provisions above, a recipient
- * may use your version of this file under either the MPL or the
- * GPL.
- */
-
-#ifndef prmon_h___
-#define prmon_h___
-
-#include <security_asn1/prtypes.h>
-#include <security_asn1/prinrval.h>
-
-PR_BEGIN_EXTERN_C
-
-typedef struct PRMonitor PRMonitor;
-
-/*
-** Create a new monitor. Monitors are re-entrant locks with a single built-in
-** condition variable.
-**
-** This may fail if memory is tight or if some operating system resource
-** is low.
-*/
-NSPR_API(PRMonitor*) PR_NewMonitor(void);
-
-/*
-** Destroy a monitor. The caller is responsible for guaranteeing that the
-** monitor is no longer in use. There must be no thread waiting on the monitor's
-** condition variable and that the lock is not held.
-**
-*/
-NSPR_API(void) PR_DestroyMonitor(PRMonitor *mon);
-
-/*
-** Enter the lock associated with the monitor. If the calling thread currently
-** is in the monitor, the call to enter will silently succeed. In either case,
-** it will increment the entry count by one.
-*/
-NSPR_API(void) PR_EnterMonitor(PRMonitor *mon);
-
-/*
-** Decrement the entry count associated with the monitor. If the decremented
-** entry count is zero, the monitor is exited. Returns PR_FAILURE if the
-** calling thread has not entered the monitor.
-*/
-NSPR_API(PRStatus) PR_ExitMonitor(PRMonitor *mon);
-
-/*
-** Wait for a notify on the monitor's condition variable. Sleep for "ticks"
-** amount of time (if "ticks" is PR_INTERVAL_NO_TIMEOUT then the sleep is
-** indefinite).
-**
-** While the thread is waiting it exits the monitor (as if it called
-** PR_ExitMonitor as many times as it had called PR_EnterMonitor).  When
-** the wait has finished the thread regains control of the monitors lock
-** with the same entry count as before the wait began.
-**
-** The thread waiting on the monitor will be resumed when the monitor is
-** notified (assuming the thread is the next in line to receive the
-** notify) or when the "ticks" timeout elapses.
-**
-** Returns PR_FAILURE if the caller has not entered the monitor.
-*/
-NSPR_API(PRStatus) PR_Wait(PRMonitor *mon, PRIntervalTime ticks);
-
-/*
-** Notify a thread waiting on the monitor's condition variable. If a thread
-** is waiting on the condition variable (using PR_Wait) then it is awakened
-** and attempts to reenter the monitor.
-*/
-NSPR_API(PRStatus) PR_Notify(PRMonitor *mon);
-
-/*
-** Notify all of the threads waiting on the monitor's condition variable.
-** All of threads waiting on the condition are scheduled to reenter the
-** monitor.
-*/
-NSPR_API(PRStatus) PR_NotifyAll(PRMonitor *mon);
-
-PR_END_EXTERN_C
-
-#endif /* prmon_h___ */