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| 359 | serge | 1 | /**************************************************************************** |
| 2 | * |
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| 3 | * Open Watcom Project |
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| 4 | * |
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| 5 | * Portions Copyright (c) 1983-2002 Sybase, Inc. All Rights Reserved. |
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| 6 | * |
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| 7 | * ======================================================================== |
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| 8 | * |
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| 9 | * This file contains Original Code and/or Modifications of Original |
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| 10 | * Code as defined in and that are subject to the Sybase Open Watcom |
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| 11 | * Public License version 1.0 (the 'License'). You may not use this file |
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| 12 | * except in compliance with the License. BY USING THIS FILE YOU AGREE TO |
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| 13 | * ALL TERMS AND CONDITIONS OF THE LICENSE. A copy of the License is |
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| 14 | * provided with the Original Code and Modifications, and is also |
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| 15 | * available at www.sybase.com/developer/opensource. |
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| 16 | * |
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| 17 | * The Original Code and all software distributed under the License are |
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| 18 | * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER |
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| 19 | * EXPRESS OR IMPLIED, AND SYBASE AND ALL CONTRIBUTORS HEREBY DISCLAIM |
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| 20 | * ALL SUCH WARRANTIES, INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF |
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| 21 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR |
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| 22 | * NON-INFRINGEMENT. Please see the License for the specific language |
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| 23 | * governing rights and limitations under the License. |
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| 24 | * |
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| 25 | * ======================================================================== |
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| 26 | * |
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| 27 | * Description: WHEN YOU FIGURE OUT WHAT THIS FILE DOES, PLEASE |
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| 28 | * DESCRIBE IT HERE! |
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| 29 | * |
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| 30 | ****************************************************************************/ |
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| 31 | |||
| 32 | |||
| 33 | //#include "dll.h" // needs to be first |
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| 34 | #include "variety.h" |
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| 35 | #include |
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| 36 | #include |
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| 37 | #include "heap.h" |
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| 38 | #include "heapacc.h" |
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| 39 | |||
| 40 | _WCRTLINK size_t _memmax( void ) /* return size of largest free piece from near heap */ |
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| 41 | { |
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| 42 | size_t maxlen, size; |
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| 43 | frlptr pnext; |
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| 44 | mheapptr mhp; |
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| 45 | |||
| 46 | maxlen = 0; |
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| 47 | _AccessNHeap(); |
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| 48 | for( mhp = __nheapbeg; mhp != NULL; mhp = mhp->next ) { |
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| 49 | pnext = mhp->freehead.next; |
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| 50 | while( pnext != (frlptr) &mhp->freehead ) { |
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| 51 | size = ((pnext->len - TAG_SIZE) & ~ROUND_SIZE); |
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| 52 | if( size > maxlen ) maxlen = size; |
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| 53 | pnext = pnext->next; |
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| 54 | } |
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| 55 | } |
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| 56 | _ReleaseNHeap(); |
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| 57 | return( maxlen ); |
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| 58 | } |