| Index: gecko-sdk/include/obsolete/prsem.h
|
| ===================================================================
|
| --- gecko-sdk/include/obsolete/prsem.h (revision 0)
|
| +++ gecko-sdk/include/obsolete/prsem.h (revision 0)
|
| @@ -0,0 +1,96 @@
|
| +/* -*- 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 ***** */
|
| +
|
| +#ifndef prsem_h___
|
| +#define prsem_h___
|
| +
|
| +/*
|
| +** API for counting semaphores. Semaphores are counting synchronizing
|
| +** variables based on a lock and a condition variable. They are lightweight
|
| +** contention control for a given count of resources.
|
| +*/
|
| +#include "prtypes.h"
|
| +
|
| +PR_BEGIN_EXTERN_C
|
| +
|
| +typedef struct PRSemaphore PRSemaphore;
|
| +
|
| +/*
|
| +** Create a new semaphore object.
|
| +*/
|
| +NSPR_API(PRSemaphore*) PR_NewSem(PRUintn value);
|
| +
|
| +/*
|
| +** Destroy the given semaphore object.
|
| +**
|
| +*/
|
| +NSPR_API(void) PR_DestroySem(PRSemaphore *sem);
|
| +
|
| +/*
|
| +** Wait on a Semaphore.
|
| +**
|
| +** This routine allows a calling thread to wait or proceed depending upon the
|
| +** state of the semahore sem. The thread can proceed only if the counter value
|
| +** of the semaphore sem is currently greater than 0. If the value of semaphore
|
| +** sem is positive, it is decremented by one and the routine returns immediately
|
| +** allowing the calling thread to continue. If the value of semaphore sem is 0,
|
| +** the calling thread blocks awaiting the semaphore to be released by another
|
| +** thread.
|
| +**
|
| +** This routine can return PR_PENDING_INTERRUPT if the waiting thread
|
| +** has been interrupted.
|
| +*/
|
| +NSPR_API(PRStatus) PR_WaitSem(PRSemaphore *sem);
|
| +
|
| +/*
|
| +** This routine increments the counter value of the semaphore. If other threads
|
| +** are blocked for the semaphore, then the scheduler will determine which ONE
|
| +** thread will be unblocked.
|
| +*/
|
| +NSPR_API(void) PR_PostSem(PRSemaphore *sem);
|
| +
|
| +/*
|
| +** Returns the value of the semaphore referenced by sem without affecting
|
| +** the state of the semaphore. The value represents the semaphore vaule
|
| +F** at the time of the call, but may not be the actual value when the
|
| +** caller inspects it.
|
| +*/
|
| +NSPR_API(PRUintn) PR_GetValueSem(PRSemaphore *sem);
|
| +
|
| +PR_END_EXTERN_C
|
| +
|
| +#endif /* prsem_h___ */
|
|
|
| Property changes on: gecko-sdk\include\obsolete\prsem.h
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| ___________________________________________________________________
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| Added: svn:eol-style
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| + LF
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