1 | /* emacs edit mode for this file is -*- C -*- */ |
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2 | /* $Id: mmalloc.c,v 1.2 1997-04-15 09:22:55 schmidt Exp $ */ |
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3 | |
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4 | /* |
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5 | $Log: not supported by cvs2svn $ |
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6 | Revision 1.1 1997/03/27 10:14:25 schmidt |
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7 | spurious #include <stdio.h> removed |
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8 | |
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9 | Revision 1.0 1996/05/17 10:59:47 stobbe |
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10 | Initial revision |
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11 | |
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12 | */ |
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13 | |
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14 | #define _POSIX_SOURCE 1 |
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15 | |
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16 | #include <config.h> |
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17 | |
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18 | #include <string.h> |
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19 | #include <stdlib.h> |
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20 | |
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21 | #include "memman.h" |
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22 | #include "mmprivate.h" |
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23 | |
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24 | size_t |
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25 | mmSizeL( void* adr ) |
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26 | { |
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27 | if (adr!=NULL) { |
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28 | |
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29 | adr = (size_t*)adr-1; |
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30 | return *(size_t*)adr; |
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31 | } |
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32 | return 0; |
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33 | } |
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34 | |
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35 | #ifndef MDEBUG |
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36 | |
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37 | void * |
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38 | mmAlloc( size_t size ) |
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39 | { |
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40 | size_t thesize = size + sizeof( void * ); |
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41 | size_t * dummy = (size_t*)mmAllocBlock( thesize ); |
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42 | *dummy = thesize; |
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43 | return (void*)(dummy+1); |
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44 | } |
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45 | |
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46 | void |
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47 | mmFree( void* adr ) |
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48 | { |
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49 | if (adr!=NULL) { |
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50 | adr = (size_t*)adr-1; |
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51 | mmFreeBlock( adr, *(size_t*)adr ); |
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52 | } |
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53 | } |
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54 | |
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55 | void * |
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56 | mmRealloc( void* adr, size_t newsize ) |
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57 | { |
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58 | size_t oldsize = *((size_t*)(adr)-1); |
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59 | void* newadr = mmAlloc( newsize ); |
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60 | memcpy( newadr, adr, (oldsize < newsize) ? oldsize : newsize ); |
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61 | mmFree( adr ); |
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62 | return newadr; |
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63 | } |
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64 | |
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65 | #else /* MDEBUG */ |
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66 | |
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67 | void * |
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68 | mmDBAlloc( size_t size, char* fname, int lineno ) |
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69 | { |
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70 | size_t thesize = size + sizeof( void * ); |
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71 | size_t * dummy = (size_t*)mmDBAllocBlock( thesize, fname, lineno ); |
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72 | *dummy = thesize; |
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73 | return (void*)(dummy+1); |
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74 | } |
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75 | |
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76 | void |
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77 | mmDBFree( void* adr, char* fname, int lineno ) |
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78 | { |
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79 | if (adr!=NULL) { |
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80 | size_t l; |
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81 | adr = (size_t*)adr-1; |
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82 | #ifdef __alpha__ |
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83 | l= (*(size_t*)((int)adr&(~7))); |
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84 | #else |
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85 | l= (*(size_t*)((int)adr&(~3))); |
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86 | #endif |
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87 | mmDBFreeBlock( adr,l, fname, lineno ); |
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88 | } |
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89 | } |
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90 | |
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91 | void * |
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92 | mmDBRealloc( void* adr, size_t newsize, char* fname, int lineno ) |
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93 | { |
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94 | size_t oldsize = *((size_t*)(adr)-1); |
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95 | void* newadr = mmDBAlloc( newsize, fname, lineno ); |
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96 | memcpy( newadr, adr, (oldsize < newsize) ? oldsize : newsize ); |
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97 | mmDBFree( adr, fname, lineno ); |
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98 | return newadr; |
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99 | } |
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100 | |
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101 | #endif /* MDEBUG */ |
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