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119 lines
3.9 KiB
C
119 lines
3.9 KiB
C
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is the Netscape Portable Runtime (NSPR).
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*
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* The Initial Developer of the Original Code is
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* Netscape Communications Corporation.
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* Portions created by the Initial Developer are Copyright (C) 1998-2000
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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/*
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* File: prpdce.h
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* Description: This file is the API defined to allow for DCE (aka POSIX)
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* thread emulation in an NSPR environment. It is not the
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* intent that this be a fully supported API.
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*/
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#if !defined(PRPDCE_H)
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#define PRPDCE_H
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#include "prlock.h"
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#include "prcvar.h"
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#include "prtypes.h"
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#include "prinrval.h"
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PR_BEGIN_EXTERN_C
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#define _PR_NAKED_CV_LOCK (PRLock*)0xdce1dce1
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/*
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** Test and acquire a lock.
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**
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** If the lock is acquired by the calling thread, the
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** return value will be PR_SUCCESS. If the lock is
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** already held, by another thread or this thread, the
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** result will be PR_FAILURE.
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*/
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NSPR_API(PRStatus) PRP_TryLock(PRLock *lock);
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/*
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** Create a naked condition variable
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**
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** A "naked" condition variable is one that is not created bound
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** to a lock. The CV created with this function is the only type
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** that may be used in the subsequent "naked" condition variable
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** operations (see PRP_NakedWait, PRP_NakedNotify, PRP_NakedBroadcast);
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*/
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NSPR_API(PRCondVar*) PRP_NewNakedCondVar(void);
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/*
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** Destroy a naked condition variable
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**
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** Destroy the condition variable created by PR_NewNakedCondVar.
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*/
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NSPR_API(void) PRP_DestroyNakedCondVar(PRCondVar *cvar);
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/*
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** Wait on a condition
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**
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** Wait on the condition variable 'cvar'. It is asserted that
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** the lock protecting the condition 'lock' is held by the
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** calling thread. If more time expires than that declared in
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** 'timeout' the condition will be notified. Waits can be
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** interrupted by another thread.
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**
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** NB: The CV ('cvar') must be one created using PR_NewNakedCondVar.
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*/
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NSPR_API(PRStatus) PRP_NakedWait(
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PRCondVar *cvar, PRLock *lock, PRIntervalTime timeout);
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/*
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** Notify a thread waiting on a condition
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**
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** Notify the condition specified 'cvar'.
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**
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** NB: The CV ('cvar') must be one created using PR_NewNakedCondVar.
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*/
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NSPR_API(PRStatus) PRP_NakedNotify(PRCondVar *cvar);
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/*
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** Notify all threads waiting on a condition
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**
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** Notify the condition specified 'cvar'.
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**
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** NB: The CV ('cvar') must be one created using PR_NewNakedCondVar.
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*/
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NSPR_API(PRStatus) PRP_NakedBroadcast(PRCondVar *cvar);
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PR_END_EXTERN_C
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#endif /* PRPDCE_H */
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