| /* -*- 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 prcmon_h___ |
| #define prcmon_h___ |
| |
| /* |
| ** Interface to cached monitors. Cached monitors use an address to find a |
| ** given PR monitor. In this way a monitor can be associated with another |
| ** object without preallocating a monitor for all objects. |
| ** |
| ** A hash table is used to quickly map addresses to individual monitors |
| ** and the system automatically grows the hash table as needed. |
| ** |
| ** Cache monitors are about 5 times slower to use than uncached monitors. |
| */ |
| #include "prmon.h" |
| #include "prinrval.h" |
| |
| PR_BEGIN_EXTERN_C |
| |
| /** |
| ** Like PR_EnterMonitor except use the "address" to find a monitor in the |
| ** monitor cache. If successful, returns the PRMonitor now associated |
| ** with "address". Note that you must PR_CExitMonitor the address to |
| ** release the monitor cache entry (otherwise the monitor cache will fill |
| ** up). This call will return NULL if the monitor cache needs to be |
| ** expanded and the system is out of memory. |
| */ |
| NSPR_API(PRMonitor*) PR_CEnterMonitor(void *address); |
| |
| /* |
| ** Like PR_ExitMonitor except use the "address" to find a monitor in the |
| ** monitor cache. |
| */ |
| NSPR_API(PRStatus) PR_CExitMonitor(void *address); |
| |
| /* |
| ** Like PR_Wait except use the "address" to find a monitor in the |
| ** monitor cache. |
| */ |
| NSPR_API(PRStatus) PR_CWait(void *address, PRIntervalTime timeout); |
| |
| /* |
| ** Like PR_Notify except use the "address" to find a monitor in the |
| ** monitor cache. |
| */ |
| NSPR_API(PRStatus) PR_CNotify(void *address); |
| |
| /* |
| ** Like PR_NotifyAll except use the "address" to find a monitor in the |
| ** monitor cache. |
| */ |
| NSPR_API(PRStatus) PR_CNotifyAll(void *address); |
| |
| /* |
| ** Set a callback to be invoked each time a monitor is recycled from the cache |
| ** freelist, with the monitor's cache-key passed in address. |
| */ |
| NSPR_API(void) PR_CSetOnMonitorRecycle(void (PR_CALLBACK *callback)(void *address)); |
| |
| PR_END_EXTERN_C |
| |
| #endif /* prcmon_h___ */ |