[0e1846] | 1 | /**************************************** |
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| 2 | * Computer Algebra System SINGULAR * |
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| 3 | ****************************************/ |
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[32df82] | 4 | /* $Id: mmalloc.c,v 1.2 1997-04-02 15:07:28 Singular Exp $ */ |
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[0e1846] | 5 | |
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| 6 | /* |
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| 7 | * ABSTRACT: |
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| 8 | */ |
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| 9 | |
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| 10 | #define _POSIX_SOURCE 1 |
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| 11 | |
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| 12 | #include <string.h> |
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| 13 | #include <stdlib.h> |
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| 14 | #include <stdio.h> |
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| 15 | #include "mod2.h" |
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| 16 | #include "tok.h" |
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| 17 | #include "structs.h" |
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| 18 | #include "mmemory.h" |
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| 19 | #include "mmprivat.h" |
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| 20 | |
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| 21 | size_t mmSizeL( void* adr ) |
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| 22 | { |
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| 23 | if (adr!=NULL) |
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| 24 | { |
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| 25 | adr = (size_t*)adr-1; |
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| 26 | return *(size_t*)adr; |
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| 27 | } |
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| 28 | return 0; |
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| 29 | } |
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| 30 | |
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| 31 | #ifndef MDEBUG |
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| 32 | |
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| 33 | void * mmAlloc( size_t size ) |
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| 34 | { |
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| 35 | size_t thesize = size + sizeof( ADDRESS ); |
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| 36 | size_t * dummy = (size_t*)mmAllocBlock( thesize ); |
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| 37 | *dummy = thesize; |
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| 38 | return (void*)(dummy+1); |
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| 39 | } |
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| 40 | |
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| 41 | void mmFree( void* adr ) |
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| 42 | { |
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| 43 | if (adr!=NULL) |
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| 44 | { |
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| 45 | adr = (size_t*)adr-1; |
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| 46 | mmFreeBlock( adr, *(size_t*)adr ); |
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| 47 | } |
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| 48 | } |
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| 49 | |
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| 50 | void * mmRealloc( void* adr, size_t newsize ) |
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| 51 | { |
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| 52 | size_t *aadr=(size_t*)(adr)-1; |
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| 53 | size_t oldsize = *aadr; |
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| 54 | void* newadr = mmAlloc( newsize ); |
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| 55 | memcpy( newadr, adr, min(oldsize-sizeof(ADDRESS),newsize) ); |
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| 56 | mmFreeBlock( aadr,oldsize ); |
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| 57 | return newadr; |
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| 58 | } |
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| 59 | |
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| 60 | #else /* MDEBUG */ |
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| 61 | |
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| 62 | void * mmDBAlloc( size_t size, char* fname, int lineno ) |
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| 63 | { |
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| 64 | size_t thesize = size + sizeof( ADDRESS ); |
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| 65 | size_t * dummy = (size_t*)mmDBAllocBlock( thesize, fname, lineno ); |
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| 66 | *dummy = thesize; |
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| 67 | return (void*)(dummy+1); |
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| 68 | } |
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| 69 | |
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| 70 | void mmDBFree( void* adr, char* fname, int lineno ) |
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| 71 | { |
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| 72 | if (adr!=NULL) |
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| 73 | { |
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| 74 | adr = (size_t*)adr-1; |
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| 75 | mmDBFreeBlock( adr,*(size_t *)adr, fname, lineno ); |
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| 76 | } |
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| 77 | } |
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| 78 | |
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| 79 | void * mmDBRealloc( void* adr, size_t newsize, char* fname, int lineno ) |
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| 80 | { |
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| 81 | size_t *aadr=(size_t*)(adr)-1; |
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| 82 | size_t oldsize = *aadr; |
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| 83 | void* newadr = mmDBAlloc( newsize, fname, lineno ); |
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| 84 | memcpy( newadr, adr, min(oldsize-sizeof(ADDRESS), newsize) ); |
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| 85 | mmDBFreeBlock( aadr, oldsize, fname, lineno ); |
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| 86 | return newadr; |
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| 87 | } |
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| 88 | |
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| 89 | #endif /* MDEBUG */ |
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