1 | // |
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2 | // Cforall Version 1.0.0 Copyright (C) 2016 University of Waterloo |
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3 | // |
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4 | // The contents of this file are covered under the licence agreement in the |
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5 | // file "LICENCE" distributed with Cforall. |
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6 | // |
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7 | // alloc.c -- |
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8 | // |
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9 | // Author : Peter A. Buhr |
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10 | // Created On : Wed Feb 3 07:56:22 2016 |
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11 | // Last Modified By : Peter A. Buhr |
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12 | // Last Modified On : Fri Feb 16 15:42:31 2018 |
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13 | // Update Count : 330 |
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14 | // |
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15 | |
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16 | #include <assert.h> |
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17 | #include <malloc.h> // malloc_usable_size |
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18 | #include <stdint.h> // uintptr_t |
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19 | #include <stdlib.h> // posix_memalign |
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20 | #include <fstream> |
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21 | #include <stdlib> // access C malloc, realloc |
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22 | |
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23 | int * foo( int * p, int c ) { return p; } |
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24 | int * bar( int * p, int c ) { return p; } |
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25 | int * baz( int * p, int c ) { return p; } |
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26 | |
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27 | int main( void ) { |
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28 | size_t dim = 10; |
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29 | char fill = '\xff'; |
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30 | int * p; |
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31 | |
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32 | // allocation, non-array types |
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33 | |
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34 | // int & r = malloc(); |
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35 | // r = 0xdeadbeef; |
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36 | // printf( "C malloc %#x\n", r ); |
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37 | // free( &r ); |
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38 | |
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39 | p = (int *)malloc( sizeof(*p) ); // C malloc, type unsafe |
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40 | *p = 0xdeadbeef; |
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41 | printf( "C malloc %#x\n", *p ); |
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42 | free( p ); |
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43 | |
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44 | p = malloc(); // CFA malloc, type safe |
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45 | *p = 0xdeadbeef; |
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46 | printf( "CFA malloc %#x\n", *p ); |
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47 | free( p ); |
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48 | |
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49 | p = alloc(); // CFA alloc, type safe |
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50 | *p = 0xdeadbeef; |
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51 | printf( "CFA alloc %#x\n", *p ); |
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52 | free( p ); |
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53 | |
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54 | p = alloc( fill ); // CFA alloc, fill |
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55 | printf( "CFA alloc, fill %08x\n", *p ); |
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56 | |
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57 | |
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58 | // allocation, array types |
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59 | printf( "\n" ); |
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60 | |
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61 | p = (int *)calloc( dim, sizeof( *p ) ); // C array calloc, type unsafe |
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62 | printf( "C array calloc, fill 0\n" ); |
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63 | for ( int i = 0; i < dim; i += 1 ) { printf( "%#x ", p[i] ); } |
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64 | printf( "\n" ); |
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65 | free( p ); |
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66 | |
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67 | p = calloc( dim ); // CFA array calloc, type safe |
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68 | printf( "CFA array calloc, fill 0\n" ); |
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69 | for ( int i = 0; i < dim; i += 1 ) { printf( "%#x ", p[i] ); } |
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70 | printf( "\n" ); |
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71 | free( p ); |
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72 | |
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73 | p = alloc( dim ); // CFA array alloc, type safe |
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74 | for ( int i = 0; i < dim; i += 1 ) { p[i] = 0xdeadbeef; } |
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75 | printf( "CFA array alloc, no fill\n" ); |
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76 | for ( int i = 0; i < dim; i += 1 ) { printf( "%#x ", p[i] ); } |
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77 | printf( "\n" ); |
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78 | free( p ); |
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79 | |
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80 | p = alloc( 2 * dim, fill ); // CFA array alloc, fill |
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81 | printf( "CFA array alloc, fill %#hhx\n", fill ); |
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82 | for ( int i = 0; i < 2 * dim; i += 1 ) { printf( "%#x ", p[i] ); } |
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83 | printf( "\n" ); |
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84 | // do not free |
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85 | |
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86 | |
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87 | // resize, non-array types |
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88 | printf( "\n" ); |
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89 | |
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90 | p = (int *)realloc( p, dim * sizeof(*p) ); // C realloc |
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91 | for ( int i = 0; i < dim; i += 1 ) { p[i] = 0xdeadbeef; } |
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92 | printf( "C realloc\n" ); |
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93 | for ( int i = 0; i < dim; i += 1 ) { printf( "%#x ", p[i] ); } |
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94 | printf( "\n" ); |
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95 | |
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96 | p = realloc( p, 2 * dim * sizeof(*p) ); // CFA realloc |
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97 | for ( int i = dim; i < 2 * dim; i += 1 ) { p[i] = 0x1010101; } |
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98 | printf( "CFA realloc\n" ); |
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99 | for ( int i = 0; i < 2 * dim; i += 1 ) { printf( "%#x ", p[i] ); } |
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100 | printf( "\n" ); |
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101 | // do not free |
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102 | |
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103 | |
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104 | // resize, array types |
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105 | printf( "\n" ); |
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106 | |
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107 | p = alloc( p, dim ); // CFA resize array alloc |
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108 | for ( int i = 0; i < dim; i += 1 ) { p[i] = 0xdeadbeef; } |
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109 | printf( "CFA resize alloc\n" ); |
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110 | for ( int i = 0; i < dim; i += 1 ) { printf( "%#x ", p[i] ); } |
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111 | printf( "\n" ); |
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112 | |
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113 | p = alloc( p, 2 * dim ); // CFA resize array alloc |
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114 | for ( int i = dim; i < 2 * dim; i += 1 ) { p[i] = 0x1010101; } |
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115 | printf( "CFA resize array alloc\n" ); |
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116 | for ( int i = 0; i < 2 * dim; i += 1 ) { printf( "%#x ", p[i] ); } |
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117 | printf( "\n" ); |
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118 | |
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119 | p = alloc( p, dim ); // CFA array alloc |
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120 | printf( "CFA resize array alloc\n" ); |
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121 | for ( int i = 0; i < dim; i += 1 ) { printf( "%#x ", p[i] ); } |
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122 | printf( "\n" ); |
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123 | |
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124 | free( p ); |
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125 | p = 0; |
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126 | |
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127 | p = alloc( p, dim, fill ); // CFA array alloc, fill |
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128 | printf( "CFA resize array alloc, fill\n" ); |
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129 | for ( int i = 0; i < dim; i += 1 ) { printf( "%#x ", p[i] ); } |
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130 | printf( "\n" ); |
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131 | |
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132 | p = alloc( p, 2 * dim, fill ); // CFA array alloc, fill |
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133 | printf( "CFA resize array alloc, fill\n" ); |
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134 | for ( int i = 0; i < 2 * dim; i += 1 ) { printf( "%#x ", p[i] ); } |
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135 | printf( "\n" ); |
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136 | |
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137 | p = alloc( p, dim, fill ); // CFA array alloc, fill |
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138 | printf( "CFA resize array alloc, fill\n" ); |
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139 | for ( int i = 0; i < dim; i += 1 ) { printf( "%#x ", p[i] );; } |
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140 | printf( "\n" ); |
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141 | free( p ); |
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142 | |
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143 | |
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144 | struct Struct { int x; double y; }; |
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145 | Struct st, st1, sta[dim], sta1[dim], * stp, * stp1; |
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146 | |
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147 | // alignment, non-array types |
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148 | printf( "\n" ); |
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149 | enum { Alignment = 128 }; |
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150 | |
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151 | stp = &(*(Struct*)memalign( Alignment, sizeof( *stp ) ) ){ 42, 42.5 }; // C memalign |
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152 | assert( (uintptr_t)stp % Alignment == 0 ); |
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153 | printf( "C memalign %d %g\n", stp->x, stp->y ); |
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154 | free( stp ); |
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155 | |
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156 | stp = &(*memalign( Alignment )){ 42, 42.5 }; // CFA memalign |
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157 | assert( (uintptr_t)stp % Alignment == 0 ); |
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158 | printf( "CFA memalign %d %g\n", stp->x, stp->y ); |
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159 | free( stp ); |
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160 | |
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161 | posix_memalign( (void **)&stp, Alignment, sizeof( *stp ) ); // C posix_memalign |
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162 | *stp = (Struct){ 42, 42.5 }; |
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163 | assert( (uintptr_t)stp % Alignment == 0 ); |
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164 | printf( "CFA posix_memalign %d %g\n", stp->x, stp->y ); |
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165 | free( stp ); |
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166 | |
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167 | posix_memalign( &stp, Alignment ); // CFA posix_memalign |
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168 | *stp = (Struct){ 42, 42.5 }; |
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169 | assert( (uintptr_t)stp % Alignment == 0 ); |
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170 | printf( "CFA posix_memalign %d %g\n", stp->x, stp->y ); |
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171 | free( stp ); |
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172 | |
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173 | stp = &(*aligned_alloc( Alignment )){ 42, 42.5 }; // CFA aligned_alloc |
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174 | assert( (uintptr_t)stp % Alignment == 0 ); |
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175 | printf( "CFA aligned_alloc %d %g\n", stp->x, stp->y ); |
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176 | free( stp ); |
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177 | |
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178 | stp = &(*align_alloc( Alignment )){ 42, 42.5 }; // CFA align_alloc |
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179 | assert( (uintptr_t)stp % Alignment == 0 ); |
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180 | printf( "CFA align_alloc %d %g\n", stp->x, stp->y ); |
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181 | free( stp ); |
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182 | |
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183 | stp = align_alloc( Alignment, fill ); // CFA memalign, fill |
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184 | assert( (uintptr_t)stp % Alignment == 0 ); |
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185 | printf( "CFA align_alloc fill %#x %a\n", stp->x, stp->y ); |
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186 | free( stp ); |
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187 | |
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188 | |
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189 | // alignment, array types |
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190 | printf( "\n" ); |
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191 | |
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192 | stp = align_alloc( Alignment, dim ); // CFA array memalign |
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193 | assert( (uintptr_t)stp % Alignment == 0 ); |
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194 | for ( int i = 0; i < dim; i += 1 ) { stp[i] = (Struct){ 42, 42.5 }; } |
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195 | printf( "CFA array align_alloc\n" ); |
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196 | for ( int i = 0; i < dim; i += 1 ) { printf( "%d %g, ", stp[i].x, stp[i].y ); } |
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197 | printf( "\n" ); |
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198 | free( stp ); |
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199 | |
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200 | stp = align_alloc( Alignment, dim, fill ); // CFA array memalign, fill |
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201 | assert( (uintptr_t)stp % Alignment == 0 ); |
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202 | printf( "CFA array align_alloc, fill\n" ); |
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203 | for ( int i = 0; i < dim; i += 1 ) { printf( "%#x %a, ", stp[i].x, stp[i].y ); } |
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204 | printf( "\n" ); |
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205 | free( stp ); |
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206 | |
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207 | |
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208 | // data, non-array types |
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209 | printf( "\n" ); |
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210 | |
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211 | memset( &st, fill ); // CFA memset, type safe |
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212 | printf( "CFA memset %#x %a\n", st.x, st.y ); |
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213 | memcpy( &st1, &st ); // CFA memcpy, type safe |
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214 | printf( "CFA memcpy %#x %a\n", st1.x, st1.y ); |
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215 | |
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216 | |
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217 | // data, array types |
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218 | printf( "\n" ); |
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219 | |
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220 | memset( sta, dim, fill ); // CFA array memset, type safe |
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221 | printf( "CFA array memset\n" ); |
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222 | for ( int i = 0; i < dim; i += 1 ) { printf( "%#x %a, ", sta[i].x, sta[i].y ); } |
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223 | printf( "\n" ); |
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224 | |
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225 | memcpy( sta1, sta, dim ); // CFA array memcpy, type safe |
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226 | printf( "CFA memcpy\n" ); |
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227 | for ( int i = 0; i < dim; i += 1 ) { printf( "%#x %a, ", sta1[i].x, sta1[i].y ); } |
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228 | printf( "\n" ); |
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229 | |
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230 | |
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231 | // new, non-array types |
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232 | printf( "\n" ); |
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233 | |
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234 | stp = new( 42, 42.5 ); |
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235 | stp1 = new( 42, 42.5 ); |
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236 | printf( "CFA new initialize\n%d %g %d %g\n", stp->x, stp->y, stp1->x, stp1->y ); |
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237 | delete( stp, stp1 ); |
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238 | |
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239 | // new, array types |
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240 | stp = anew( dim, 42, 42.5 ); |
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241 | printf( "CFA array new initialize\n" ); |
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242 | for ( int i = 0; i < dim; i += 1 ) { printf( "%d %g, ", stp[i].x, stp[i].y ); } |
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243 | printf( "\n" ); |
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244 | stp1 = anew( dim, 42, 42.5 ); |
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245 | for ( int i = 0; i < dim; i += 1 ) { printf( "%d %g, ", stp1[i].x, stp1[i].y ); } |
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246 | printf( "\n" ); |
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247 | adelete( dim, stp, dim, stp1 ); |
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248 | |
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249 | // extras |
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250 | printf( "\n" ); |
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251 | |
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252 | float * fp = malloc() + 1; |
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253 | printf( "pointer arithmetic %d\n", fp == fp - 1 ); |
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254 | free( fp - 1 ); |
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255 | |
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256 | p = foo( bar( baz( malloc(), 0 ), 0 ), 0 ); |
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257 | *p = 0xdeadbeef; |
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258 | printf( "CFA deep malloc %#x\n", *p ); |
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259 | free( p ); |
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260 | |
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261 | #ifdef ERR1 |
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262 | stp = malloc(); |
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263 | printf( "\nSHOULD FAIL\n" ); |
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264 | p = realloc( stp, dim * sizeof( *stp ) ); |
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265 | p = alloc( stp, dim * sizeof( *stp ) ); |
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266 | p = memset( stp, 10 ); |
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267 | p = memcpy( &st1, &st ); |
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268 | #endif |
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269 | } // main |
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270 | |
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271 | // Local Variables: // |
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272 | // tab-width: 4 // |
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273 | // compile-command: "cfa alloc.c" // |
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274 | // End: // |
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