[2dd068] | 1 | /* emacs edit mode for this file is -*- C -*- */ |
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[493c477] | 2 | /* $Id: mmalloc.c,v 1.3 1997-06-19 12:22:15 schmidt Exp $ */ |
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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 <string.h> |
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| 9 | #include <stdlib.h> |
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[d3d15e] | 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 | size_t |
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| 15 | mmSizeL( void* adr ) |
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| 16 | { |
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| 17 | if (adr!=NULL) { |
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| 18 | |
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| 19 | adr = (size_t*)adr-1; |
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| 20 | return *(size_t*)adr; |
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| 21 | } |
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| 22 | return 0; |
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| 23 | } |
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| 24 | |
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| 25 | #ifndef MDEBUG |
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| 26 | |
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| 27 | void * |
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| 28 | mmAlloc( size_t size ) |
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| 29 | { |
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| 30 | size_t thesize = size + sizeof( void * ); |
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| 31 | size_t * dummy = (size_t*)mmAllocBlock( thesize ); |
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| 32 | *dummy = thesize; |
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| 33 | return (void*)(dummy+1); |
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| 34 | } |
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| 35 | |
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| 36 | void |
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| 37 | mmFree( void* adr ) |
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| 38 | { |
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| 39 | if (adr!=NULL) { |
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| 40 | adr = (size_t*)adr-1; |
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| 41 | mmFreeBlock( adr, *(size_t*)adr ); |
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| 42 | } |
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| 43 | } |
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| 44 | |
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| 45 | void * |
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| 46 | mmRealloc( void* adr, size_t newsize ) |
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| 47 | { |
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| 48 | size_t oldsize = *((size_t*)(adr)-1); |
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| 49 | void* newadr = mmAlloc( newsize ); |
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| 50 | memcpy( newadr, adr, (oldsize < newsize) ? oldsize : newsize ); |
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| 51 | mmFree( adr ); |
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| 52 | return newadr; |
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| 53 | } |
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| 54 | |
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| 55 | #else /* MDEBUG */ |
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| 56 | |
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| 57 | void * |
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| 58 | mmDBAlloc( size_t size, char* fname, int lineno ) |
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| 59 | { |
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| 60 | size_t thesize = size + sizeof( void * ); |
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| 61 | size_t * dummy = (size_t*)mmDBAllocBlock( thesize, fname, lineno ); |
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| 62 | *dummy = thesize; |
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| 63 | return (void*)(dummy+1); |
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| 64 | } |
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| 65 | |
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| 66 | void |
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| 67 | mmDBFree( void* adr, char* fname, int lineno ) |
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| 68 | { |
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| 69 | if (adr!=NULL) { |
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| 70 | size_t l; |
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| 71 | adr = (size_t*)adr-1; |
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| 72 | #ifdef __alpha__ |
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| 73 | l= (*(size_t*)((int)adr&(~7))); |
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| 74 | #else |
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| 75 | l= (*(size_t*)((int)adr&(~3))); |
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| 76 | #endif |
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| 77 | mmDBFreeBlock( adr,l, fname, lineno ); |
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| 78 | } |
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| 79 | } |
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| 80 | |
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| 81 | void * |
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| 82 | mmDBRealloc( void* adr, size_t newsize, char* fname, int lineno ) |
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| 83 | { |
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| 84 | size_t oldsize = *((size_t*)(adr)-1); |
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| 85 | void* newadr = mmDBAlloc( newsize, fname, lineno ); |
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| 86 | memcpy( newadr, adr, (oldsize < newsize) ? oldsize : newsize ); |
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| 87 | mmDBFree( adr, fname, lineno ); |
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| 88 | return newadr; |
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| 89 | } |
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| 90 | |
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| 91 | #endif /* MDEBUG */ |
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