fieker-DuValspielwiese
Last change
on this file since 1820e7 was
81104e,
checked in by Hans Schoenemann <hannes@…>, 14 years ago
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wstein: sage ticket 5313: error -> Singular error
git-svn-id: file:///usr/local/Singular/svn/trunk@13007 2c84dea3-7e68-4137-9b89-c4e89433aadc
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-
Property mode set to
100644
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File size:
1.6 KB
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Rev | Line | |
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[493c477] | 1 | /* emacs edit mode for this file is -*- C -*- */ |
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[341696] | 2 | /* $Id$ */ |
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[2dd068] | 3 | |
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| 4 | #define _POSIX_SOURCE 1 |
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| 5 | |
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[9d7aaa] | 6 | #include <config.h> |
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| 7 | |
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[2dd068] | 8 | #include <stdio.h> |
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| 9 | #include <stdlib.h> |
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[9d7aaa] | 10 | |
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[2dd068] | 11 | #include "memman.h" |
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| 12 | #include "mmprivate.h" |
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| 13 | |
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| 14 | typedef struct memBlock |
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| 15 | { |
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| 16 | struct memBlock *next; |
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| 17 | char data[MAXDATA]; |
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| 18 | } memBlock; |
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| 19 | |
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| 20 | |
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| 21 | static memBlock * mm_theBlocks = NULL; |
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| 22 | static memBlock * mm_tmpBlocks = NULL; |
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| 23 | static memBlock * mm_normBlocks = NULL; |
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| 24 | |
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| 25 | static status_t mm_blockStatus = MM_NORMAL; |
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| 26 | |
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| 27 | void |
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| 28 | mmInitBlocks( void ) |
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| 29 | { |
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| 30 | mm_theBlocks = mm_tmpBlocks = mm_normBlocks = NULL; |
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| 31 | mm_blockStatus = MM_NORMAL; |
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| 32 | } |
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| 33 | |
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| 34 | void |
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| 35 | mmMarkBlocks( void ) |
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| 36 | { |
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| 37 | mm_blockStatus = MM_TMP; |
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| 38 | mm_normBlocks = mm_theBlocks; |
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| 39 | mm_theBlocks = NULL; |
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| 40 | } |
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| 41 | |
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| 42 | void |
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| 43 | mmSweepBlocks( void ) |
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| 44 | { |
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| 45 | memBlock * dummy; |
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| 46 | |
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| 47 | while ( mm_tmpBlocks != NULL ) { |
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| 48 | dummy = mm_tmpBlocks; |
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| 49 | mm_tmpBlocks = mm_tmpBlocks->next; |
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| 50 | free( dummy ); |
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| 51 | mm_bytesReal -= sizeof( memBlock ); |
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| 52 | } |
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| 53 | mmNewPrintMark(); |
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| 54 | mm_tmpBlocks = NULL; |
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| 55 | mm_theBlocks = mm_normBlocks; |
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| 56 | mm_blockStatus = MM_NORMAL; |
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| 57 | } |
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| 58 | |
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| 59 | void |
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| 60 | mmSwitchBlocks( void ) |
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| 61 | { |
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| 62 | if ( mm_blockStatus == MM_TMP ) { |
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| 63 | mm_blockStatus = MM_SWITCHED; |
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| 64 | mm_tmpBlocks = mm_theBlocks; |
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| 65 | mm_theBlocks = mm_normBlocks; |
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| 66 | } |
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| 67 | else { |
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| 68 | mm_blockStatus = MM_TMP; |
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| 69 | mm_normBlocks = mm_theBlocks; |
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| 70 | mm_theBlocks = mm_tmpBlocks; |
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| 71 | } |
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| 72 | } |
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| 73 | |
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| 74 | void * |
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| 75 | mmGetBlock( void ) |
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| 76 | { |
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| 77 | memBlock * dummy = (memBlock*)malloc( sizeof( memBlock ) ); |
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| 78 | |
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| 79 | if ( dummy == NULL ) { |
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[81104e] | 80 | (void)fprintf( stderr, "\nSingular-Factory error: no more memory\n" ); |
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[2dd068] | 81 | exit(14); |
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| 82 | } |
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| 83 | dummy->next = mm_theBlocks; |
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| 84 | mm_theBlocks = dummy; |
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| 85 | mm_bytesReal += sizeof( memBlock ); |
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| 86 | return &dummy->data[0]; |
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| 87 | } |
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