93 lines
2.8 KiB
C
93 lines
2.8 KiB
C
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/****************************************************************************
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*
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* Open Watcom Project
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*
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* Portions Copyright (c) 1983-2002 Sybase, Inc. All Rights Reserved.
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*
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* ========================================================================
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*
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* This file contains Original Code and/or Modifications of Original
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* Code as defined in and that are subject to the Sybase Open Watcom
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* Public License version 1.0 (the 'License'). You may not use this file
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* except in compliance with the License. BY USING THIS FILE YOU AGREE TO
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* ALL TERMS AND CONDITIONS OF THE LICENSE. A copy of the License is
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* provided with the Original Code and Modifications, and is also
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* available at www.sybase.com/developer/opensource.
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*
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* The Original Code and all software distributed under the License are
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* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
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* EXPRESS OR IMPLIED, AND SYBASE AND ALL CONTRIBUTORS HEREBY DISCLAIM
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* ALL SUCH WARRANTIES, INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR
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* NON-INFRINGEMENT. Please see the License for the specific language
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* governing rights and limitations under the License.
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*
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* ========================================================================
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*
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* Description: Platform independent __allocfp() implementation.
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*
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****************************************************************************/
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#include "variety.h"
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#include <stdio.h>
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#include "liballoc.h"
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#include "fileacc.h"
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#include "rtdata.h"
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#include "streamio.h"
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#ifdef DLHEAP
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void _cdecl dlfree(void*);
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void _cdecl mf_init();
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#define malloc dlmalloc
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#define free dlfree
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#define realloc dlrealloc
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#define lib_free dlfree
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#endif
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/*
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NOTE: This routine does not actually free the link/FILE structures.
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That is because code assumes that it can fclose the file and then
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freopen is a short time later. The __purgefp routine can be called
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to actually release the storage.
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*/
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void __freefp( FILE * fp )
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{
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__stream_link **owner;
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__stream_link *link;
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_AccessIOB();
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owner = &_RWD_ostream;
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for( ;; ) {
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link = *owner;
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if( link == NULL )
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return;
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if( link->stream == fp )
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break;
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owner = &link->next;
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}
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fp->_flag |= _READ | _WRITE;
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(*owner) = link->next;
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link->next = _RWD_cstream;
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_RWD_cstream = link;
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_ReleaseIOB();
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}
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void __purgefp( void )
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{
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__stream_link *next;
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_AccessIOB();
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while( _RWD_cstream != NULL ) {
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next = _RWD_cstream->next;
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lib_free( _RWD_cstream );
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_RWD_cstream = next;
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}
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_ReleaseIOB();
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}
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