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lightning-sunbird  0.9+nobinonly
os2gc.c
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00001 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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
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00036  * ***** END LICENSE BLOCK ***** */
00037 
00038 /*
00039  * GC related routines
00040  *
00041  */
00042 #include "prlog.h"
00043 
00044 #include <stdlib.h>
00045 
00046 /* Leave a bit of room for any malloc header bytes... */
00047 #define MAX_SEGMENT_SIZE    (65536L - 4096L)
00048 
00049 /************************************************************************/
00050 /*
00051 ** Machine dependent GC Heap management routines:
00052 **    _MD_GrowGCHeap
00053 */
00054 /************************************************************************/
00055 void _MD_InitGC() {}
00056 
00057 void *_MD_GrowGCHeap(PRUint32 *sizep)
00058 {
00059     void *addr;
00060 
00061     if ( *sizep > MAX_SEGMENT_SIZE )
00062     {
00063         *sizep = MAX_SEGMENT_SIZE;
00064     }
00065 
00066     addr = malloc((size_t)*sizep);
00067     return addr;
00068 }
00069 
00070 
00071 PRBool _MD_ExtendGCHeap(char *base, PRInt32 oldSize, PRInt32 newSize) {
00072   /* Not sure about this.  Todd?  */
00073   return PR_FALSE;
00074 }
00075 
00076 
00077 void _MD_FreeGCSegment(void *base, PRInt32 len)
00078 {
00079    if (base)
00080    {
00081        free(base);
00082    }
00083 }