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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: Platform independent __allocfp() implementation. |
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28 | * |
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29 | ****************************************************************************/ |
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30 | |||
31 | |||
32 | #include "variety.h" |
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33 | #include |
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34 | #include "liballoc.h" |
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35 | #include "fileacc.h" |
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36 | #include "rtdata.h" |
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37 | #include "streamio.h" |
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38 | |||
39 | #ifdef DLHEAP |
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40 | |||
41 | void _cdecl dlfree(void*); |
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42 | void _cdecl mf_init(); |
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43 | |||
44 | #define malloc dlmalloc |
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45 | #define free dlfree |
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46 | #define realloc dlrealloc |
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47 | |||
48 | #define lib_free dlfree |
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49 | #endif |
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50 | |||
51 | /* |
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52 | NOTE: This routine does not actually free the link/FILE structures. |
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53 | That is because code assumes that it can fclose the file and then |
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54 | freopen is a short time later. The __purgefp routine can be called |
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55 | to actually release the storage. |
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56 | */ |
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57 | |||
58 | void __freefp( FILE * fp ) |
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59 | { |
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60 | __stream_link **owner; |
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61 | __stream_link *link; |
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62 | |||
63 | _AccessIOB(); |
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64 | owner = &_RWD_ostream; |
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65 | for( ;; ) { |
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66 | link = *owner; |
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67 | if( link == NULL ) |
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68 | return; |
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69 | if( link->stream == fp ) |
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70 | break; |
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71 | owner = &link->next; |
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72 | } |
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73 | fp->_flag |= _READ | _WRITE; |
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74 | (*owner) = link->next; |
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75 | link->next = _RWD_cstream; |
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76 | _RWD_cstream = link; |
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77 | _ReleaseIOB(); |
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78 | } |
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79 | |||
80 | |||
81 | void __purgefp( void ) |
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82 | { |
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83 | __stream_link *next; |
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84 | |||
85 | _AccessIOB(); |
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86 | while( _RWD_cstream != NULL ) { |
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87 | next = _RWD_cstream->next; |
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88 | lib_free( _RWD_cstream ); |
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89 | _RWD_cstream = next; |
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90 | } |
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91 | _ReleaseIOB(); |
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92 | } |