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1 //================================================================= |
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2 // |
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3 // realloc.c |
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4 // |
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5 // Testcase for C library realloc() |
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6 // |
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7 //================================================================= |
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8 //####COPYRIGHTBEGIN#### |
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9 // |
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10 // ------------------------------------------- |
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11 // The contents of this file are subject to the Cygnus eCos Public License |
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12 // Version 1.0 (the "License"); you may not use this file except in |
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13 // compliance with the License. You may obtain a copy of the License at |
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14 // http://sourceware.cygnus.com/ecos |
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15 // |
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16 // Software distributed under the License is distributed on an "AS IS" |
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17 // basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the |
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18 // License for the specific language governing rights and limitations under |
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19 // the License. |
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20 // |
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21 // The Original Code is eCos - Embedded Cygnus Operating System, released |
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22 // September 30, 1998. |
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23 // |
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24 // The Initial Developer of the Original Code is Cygnus. Portions created |
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25 // by Cygnus are Copyright (C) 1998 Cygnus Solutions. All Rights Reserved. |
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26 // ------------------------------------------- |
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27 // |
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28 //####COPYRIGHTEND#### |
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29 //================================================================= |
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30 //#####DESCRIPTIONBEGIN#### |
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31 // |
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32 // Author(s): jlarmour@cygnus.co.uk |
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33 // Contributors: jlarmour@cygnus.co.uk |
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34 // Date: 1998/8/31 |
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35 // Description: Contains testcode for C library realloc() function |
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36 // |
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37 // |
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38 //####DESCRIPTIONEND#### |
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39 |
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40 // Declarations for test system: |
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41 // |
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42 // TESTCASE_TYPE=CYG_TEST_MODULE |
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43 |
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44 |
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45 // INCLUDES |
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46 |
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47 #include <pkgconf/libc.h> // config header for C library so we can know size |
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48 // of malloc pool |
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49 #include <stdlib.h> |
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50 #include <cyg/infra/testcase.h> |
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51 #include <sys/cstartup.h> // C library initialisation |
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52 |
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53 |
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54 // FUNCTIONS |
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55 |
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56 externC void |
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57 cyg_package_start( void ) |
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58 { |
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59 #ifdef CYGPKG_LIBC |
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60 cyg_iso_c_start(); |
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61 #else |
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62 (void)main(0, NULL); |
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63 #endif |
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64 } // cyg_package_start() |
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65 |
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66 |
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67 #if defined(CYGPKG_LIBC) && defined(CYGPKG_LIBC_MALLOC) |
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68 |
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69 static const char alphabet[]="abcdefghijklmnopqrstuvwxyz{-}[]#';:@~!$^&*()" |
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70 "ABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890"; |
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71 |
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72 static int |
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73 compare_with_alphabet( char *buf, int size, int offset ) |
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74 { |
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75 int i, buf_offset; |
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76 |
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77 for (i=offset, buf_offset=0; |
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78 buf_offset < size; |
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79 buf_offset++,i++ ) { |
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80 |
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81 if ( i==sizeof(alphabet)-1 ) |
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82 i=0; |
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83 |
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84 if ( buf[buf_offset] != alphabet[i] ) { |
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85 CYG_TEST_FAIL( "buffer has not retained correct data!"); |
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86 return 0; // fail |
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87 } // if |
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88 } // for |
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89 |
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90 return 1; // success |
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91 } // compare_with_alphabet() |
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92 |
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93 static int |
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94 fill_with_alphabet( char *buf, int size, int offset ) |
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95 { |
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96 int i, buf_offset; |
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97 |
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98 for (i=offset, buf_offset=0; |
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99 buf_offset < size; |
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100 buf_offset++,i++ ) { |
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101 |
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102 if ( i==sizeof(alphabet)-1 ) |
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103 i=0; |
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104 |
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105 buf[buf_offset] = alphabet[i]; |
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106 |
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107 } // for |
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108 |
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109 return compare_with_alphabet( buf, size, offset); // be sure |
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110 } // fill_with_alphabet() |
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111 |
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112 #endif // if defined(CYGPKG_LIBC) && defined(CYGPKG_LIBC_MALLOC) |
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113 |
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114 int |
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115 main( int argc, char *argv[] ) |
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116 { |
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117 #if defined(CYGPKG_LIBC) && defined(CYGPKG_LIBC_MALLOC) |
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118 char *str; |
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119 int size = CYGNUM_LIBC_MALLOC_MEMPOOL_SIZE/2; |
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120 #endif |
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121 |
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122 CYG_TEST_INIT(); |
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123 |
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124 CYG_TEST_INFO("Starting tests from testcase " __FILE__ " for C library " |
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125 "realloc() function"); |
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126 |
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127 #if defined(CYGPKG_LIBC) && defined(CYGPKG_LIBC_MALLOC) |
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128 |
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129 str = (char *)realloc( NULL, size ); |
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130 CYG_TEST_PASS_FAIL( str != NULL, "realloc doing only allocation"); |
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131 CYG_TEST_PASS_FAIL( fill_with_alphabet( str, size, 0 ), |
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132 "allocation usability"); |
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133 |
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134 str = (char *)realloc( str, 0 ); |
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135 CYG_TEST_PASS_FAIL( str == NULL, "realloc doing implicit free" ); |
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136 |
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137 str = (char *)realloc( NULL, size/2 ); |
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138 CYG_TEST_PASS_FAIL( str != NULL, "realloc doing allocation to half size"); |
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139 CYG_TEST_PASS_FAIL( fill_with_alphabet( str, size/2, 5 ), |
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140 "half allocation usability"); |
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141 |
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142 str = (char *)realloc( str, size ); |
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143 CYG_TEST_PASS_FAIL( str != NULL, |
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144 "reallocing allocation back to normal size"); |
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145 CYG_TEST_PASS_FAIL( compare_with_alphabet(str, size/2, 5), |
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146 "after realloc to normal size, old contents kept" ); |
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147 CYG_TEST_PASS_FAIL( fill_with_alphabet( str, size, 3 ), |
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148 "reallocation normal size usability"); |
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149 |
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150 str = (char *)realloc( str, size/4 ); |
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151 CYG_TEST_PASS_FAIL( str != NULL, "reallocing allocation to quarter size"); |
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152 CYG_TEST_PASS_FAIL( compare_with_alphabet(str, size/4, 3), |
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153 "after realloc to quarter size, old contents kept" ); |
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154 CYG_TEST_PASS_FAIL( fill_with_alphabet( str, size/4, 1 ), |
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155 "reallocation quarter size usability"); |
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156 |
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157 CYG_TEST_PASS_FAIL( realloc( str, size*100 ) == NULL, |
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158 "reallocing allocation that is too large" ); |
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159 CYG_TEST_PASS_FAIL( compare_with_alphabet( str, size/4, 1 ), |
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160 "Checking old contents maintained despite failure" ); |
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161 |
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162 str = (char *)realloc( str, 0 ); |
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163 CYG_TEST_PASS_FAIL( str == NULL, "realloc doing implicit free again" ); |
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164 |
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165 |
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166 #else |
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167 CYG_TEST_PASS("Testing is not applicable to this configuration"); |
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168 #endif // if defined(CYGPKG_LIBC) && defined(CYGPKG_LIBC_MALLOC) |
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169 |
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170 CYG_TEST_FINISH("Finished tests from testcase " __FILE__ " for C library " |
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171 "realloc() function"); |
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172 } // main() |
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173 |
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174 // EOF realloc.c |
