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lightning-sunbird  0.9+nobinonly
bmisc.c
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00001 /* -*- Mode: C++; c-basic-offset: 4 -*- */
00002 /* ***** BEGIN LICENSE BLOCK *****
00003  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
00004  *
00005  * The contents of this file are subject to the Mozilla Public License Version
00006  * 1.1 (the "License"); you may not use this file except in compliance with
00007  * the License. You may obtain a copy of the License at
00008  * http://www.mozilla.org/MPL/
00009  *
00010  * Software distributed under the License is distributed on an "AS IS" basis,
00011  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
00012  * for the specific language governing rights and limitations under the
00013  * License.
00014  *
00015  * The Original Code is the Netscape Portable Runtime (NSPR).
00016  *
00017  * The Initial Developer of the Original Code is
00018  * Netscape Communications Corporation.
00019  * Portions created by the Initial Developer are Copyright (C) 1998-2000
00020  * the Initial Developer. All Rights Reserved.
00021  *
00022  * Contributor(s):
00023  *
00024  * Alternatively, the contents of this file may be used under the terms of
00025  * either the GNU General Public License Version 2 or later (the "GPL"), or
00026  * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
00027  * in which case the provisions of the GPL or the LGPL are applicable instead
00028  * of those above. If you wish to allow use of your version of this file only
00029  * under the terms of either the GPL or the LGPL, and not to allow others to
00030  * use your version of this file under the terms of the MPL, indicate your
00031  * decision by deleting the provisions above and replace them with the notice
00032  * and other provisions required by the GPL or the LGPL. If you do not delete
00033  * the provisions above, a recipient may use your version of this file under
00034  * the terms of any one of the MPL, the GPL or the LGPL.
00035  *
00036  * ***** END LICENSE BLOCK ***** */
00037 
00038 #include "primpl.h"
00039 
00040 #include <stdlib.h>
00041 
00042 PRLock *_connectLock = NULL;
00043 
00044 #ifndef BONE_VERSION
00045 /* Workaround for nonblocking connects under net_server */
00046 PRUint32 connectCount = 0;
00047 ConnectListNode connectList[64];
00048 #endif
00049                                    
00050 void
00051 _MD_cleanup_before_exit (void)
00052 {
00053 }
00054 
00055 void
00056 _MD_exit (PRIntn status)
00057 {
00058     exit(status);
00059 }
00060 
00061 void
00062 _MD_early_init (void)
00063 {
00064 }
00065 
00066 static PRLock *monitor = NULL;
00067 
00068 void
00069 _MD_final_init (void)
00070 {
00071     _connectLock = PR_NewLock();
00072     PR_ASSERT(NULL != _connectLock); 
00073 #ifndef BONE_VERSION   
00074     /* Workaround for nonblocking connects under net_server */
00075     connectCount = 0;
00076 #endif
00077 }
00078 
00079 void
00080 _MD_AtomicInit (void)
00081 {
00082     if (monitor == NULL) {
00083         monitor = PR_NewLock();
00084     }
00085 }
00086 
00087 /*
00088 ** This is exceedingly messy.  atomic_add returns the last value, NSPR expects the new value.
00089 ** We just add or subtract 1 from the result.  The actual memory update is atomic.
00090 */
00091 
00092 PRInt32
00093 _MD_AtomicAdd( PRInt32 *ptr, PRInt32 val )
00094 {
00095     return( ( atomic_add( (long *)ptr, val ) ) + val );
00096 }
00097 
00098 PRInt32
00099 _MD_AtomicIncrement( PRInt32 *val )
00100 {
00101     return( ( atomic_add( (long *)val, 1 ) ) + 1 );
00102 }
00103 
00104 PRInt32
00105 _MD_AtomicDecrement( PRInt32 *val )
00106 {
00107     return( ( atomic_add( (long *)val, -1 ) ) - 1 );
00108 }
00109 
00110 PRInt32
00111 _MD_AtomicSet( PRInt32 *val, PRInt32 newval )
00112 {
00113     PRInt32 rv;
00114 
00115     if (!_pr_initialized) {
00116         _PR_ImplicitInitialization();
00117     }
00118     PR_Lock(monitor);
00119     rv = *val;
00120     *val = newval;
00121     PR_Unlock(monitor);
00122     return rv;
00123 }