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lightning-sunbird  0.9+nobinonly
nsNetSegmentUtils.h
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00001 /* ***** BEGIN LICENSE BLOCK *****
00002  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
00003  *
00004  * The contents of this file are subject to the Mozilla Public License Version
00005  * 1.1 (the "License"); you may not use this file except in compliance with
00006  * the License. You may obtain a copy of the License at
00007  * http://www.mozilla.org/MPL/
00008  *
00009  * Software distributed under the License is distributed on an "AS IS" basis,
00010  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
00011  * for the specific language governing rights and limitations under the
00012  * License.
00013  *
00014  * The Original Code is Mozilla.
00015  *
00016  * The Initial Developer of the Original Code is
00017  * Netscape Communications Corporation.
00018  * Portions created by the Initial Developer are Copyright (C) 2002
00019  * the Initial Developer. All Rights Reserved.
00020  *
00021  * Contributor(s):
00022  *   Darin Fisher <darin@netscape.com>
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
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00033  * the provisions above, a recipient may use your version of this file under
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00035  *
00036  * ***** END LICENSE BLOCK ***** */
00037 
00038 #ifndef nsNetSegmentUtils_h__
00039 #define nsNetSegmentUtils_h__
00040 
00041 #include "necko-config.h"
00042 #include "nsIOService.h"
00043 
00044 #ifdef NECKO_SMALL_BUFFERS
00045 #define NET_DEFAULT_SEGMENT_SIZE  2048
00046 #define NET_DEFAULT_SEGMENT_COUNT 4
00047 #else
00048 #define NET_DEFAULT_SEGMENT_SIZE  4096
00049 #define NET_DEFAULT_SEGMENT_COUNT 16
00050 #endif
00051 
00056 static inline nsIMemory *
00057 net_GetSegmentAlloc(PRUint32 segsize)
00058 {
00059     return (segsize == NET_DEFAULT_SEGMENT_SIZE)
00060                      ? nsIOService::gBufferCache
00061                      : nsnull;
00062 }
00063 
00067 static inline void
00068 net_ResolveSegmentParams(PRUint32 &segsize, PRUint32 &segcount)
00069 {
00070     if (!segsize)
00071         segsize = NET_DEFAULT_SEGMENT_SIZE;
00072     if (!segcount)
00073         segcount = NET_DEFAULT_SEGMENT_COUNT;
00074 }
00075 
00076 #endif // !nsNetSegmentUtils_h__