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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) 1998,1999 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 |
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33 // Contributors: jlarmour |
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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/system.h> // Overall system configuration |
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48 #include <pkgconf/libc.h> // config header for C library so we can know |
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49 // size of malloc pool |
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50 #ifdef CYGPKG_KERNEL |
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51 # include <pkgconf/kernel.h> // CYGSEM_KERNEL_MEMORY_COALESCE |
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52 #endif |
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53 #include <stdlib.h> |
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54 #include <cyg/infra/testcase.h> |
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55 #include <sys/cstartup.h> // C library initialisation |
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56 |
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57 |
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58 // FUNCTIONS |
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59 |
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60 externC void |
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61 cyg_package_start( void ) |
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62 { |
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63 #ifdef CYGPKG_LIBC |
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64 cyg_iso_c_start(); |
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65 #else |
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66 (void)main(0, NULL); |
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67 #endif |
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68 } // cyg_package_start() |
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69 |
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70 |
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71 #if defined(CYGPKG_LIBC) && defined(CYGPKG_LIBC_MALLOC) && \ |
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72 defined(CYGSEM_KERNEL_MEMORY_COALESCE) |
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73 |
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74 static const char alphabet[]="abcdefghijklmnopqrstuvwxyz{-}[]#';:@~!$^&*()" |
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75 "ABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890"; |
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76 |
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77 static int |
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78 compare_with_alphabet( char *buf, int size, int offset ) |
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79 { |
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80 int i, buf_offset; |
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81 |
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82 for (i=offset, buf_offset=0; |
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83 buf_offset < size; |
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84 buf_offset++,i++ ) { |
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85 |
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86 if ( i==sizeof(alphabet)-1 ) |
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87 i=0; |
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88 |
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89 if ( buf[buf_offset] != alphabet[i] ) { |
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90 CYG_TEST_FAIL( "buffer has not retained correct data!"); |
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91 return 0; // fail |
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92 } // if |
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93 } // for |
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94 |
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95 return 1; // success |
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96 } // compare_with_alphabet() |
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97 |
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98 static int |
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99 fill_with_alphabet( char *buf, int size, int offset ) |
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100 { |
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101 int i, buf_offset; |
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102 |
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103 for (i=offset, buf_offset=0; |
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104 buf_offset < size; |
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105 buf_offset++,i++ ) { |
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106 |
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107 if ( i==sizeof(alphabet)-1 ) |
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108 i=0; |
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109 |
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110 buf[buf_offset] = alphabet[i]; |
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111 |
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112 } // for |
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113 |
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114 return compare_with_alphabet( buf, size, offset); // be sure |
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115 } // fill_with_alphabet() |
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116 |
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117 #endif // if defined(CYGPKG_LIBC) && defined(CYGPKG_LIBC_MALLOC) && |
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118 // defined(CYGSEM_KERNEL_MEMORY_COALESCE) |
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119 |
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120 |
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121 int |
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122 main( int argc, char *argv[] ) |
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123 { |
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124 #if defined(CYGPKG_LIBC) && defined(CYGPKG_LIBC_MALLOC) && \ |
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125 defined(CYGSEM_KERNEL_MEMORY_COALESCE) |
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126 |
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127 char *str; |
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128 int size = CYGNUM_LIBC_MALLOC_MEMPOOL_SIZE/2; |
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129 #endif |
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130 |
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131 CYG_TEST_INIT(); |
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132 |
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133 CYG_TEST_INFO("Starting tests from testcase " __FILE__ " for C library " |
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134 "realloc() function"); |
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135 |
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136 #if defined(CYGPKG_LIBC) && defined(CYGPKG_LIBC_MALLOC) && \ |
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137 defined(CYGSEM_KERNEL_MEMORY_COALESCE) |
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138 |
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139 str = (char *)realloc( NULL, size ); |
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140 CYG_TEST_PASS_FAIL( str != NULL, "realloc doing only allocation"); |
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141 CYG_TEST_PASS_FAIL( fill_with_alphabet( str, size, 0 ), |
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142 "allocation usability"); |
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143 |
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144 str = (char *)realloc( str, 0 ); |
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145 CYG_TEST_PASS_FAIL( str == NULL, "realloc doing implicit free" ); |
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146 |
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147 str = (char *)realloc( NULL, size/2 ); |
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148 CYG_TEST_PASS_FAIL( str != NULL, "realloc doing allocation to half size"); |
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149 CYG_TEST_PASS_FAIL( fill_with_alphabet( str, size/2, 5 ), |
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150 "half allocation usability"); |
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151 |
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152 str = (char *)realloc( str, size ); |
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153 CYG_TEST_PASS_FAIL( str != NULL, |
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154 "reallocing allocation back to normal size"); |
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155 CYG_TEST_PASS_FAIL( compare_with_alphabet(str, size/2, 5), |
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156 "after realloc to normal size, old contents kept" ); |
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157 CYG_TEST_PASS_FAIL( fill_with_alphabet( str, size, 3 ), |
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158 "reallocation normal size usability"); |
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159 |
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160 str = (char *)realloc( str, size/4 ); |
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161 CYG_TEST_PASS_FAIL( str != NULL, "reallocing allocation to quarter size"); |
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162 CYG_TEST_PASS_FAIL( compare_with_alphabet(str, size/4, 3), |
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163 "after realloc to quarter size, old contents kept" ); |
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164 CYG_TEST_PASS_FAIL( fill_with_alphabet( str, size/4, 1 ), |
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165 "reallocation quarter size usability"); |
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166 |
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167 CYG_TEST_PASS_FAIL( realloc( str, size*100 ) == NULL, |
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168 "reallocing allocation that is too large" ); |
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169 CYG_TEST_PASS_FAIL( compare_with_alphabet( str, size/4, 1 ), |
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170 "Checking old contents maintained despite failure" ); |
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171 |
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172 str = (char *)realloc( str, 0 ); |
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173 CYG_TEST_PASS_FAIL( str == NULL, "realloc doing implicit free again" ); |
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174 |
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175 |
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176 #else |
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177 CYG_TEST_NA("Testing is not applicable to this configuration"); |
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178 #endif // if defined(CYGPKG_LIBC) && defined(CYGPKG_LIBC_MALLOC) && |
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179 // defined(CYGSEM_KERNEL_MEMORY_COALESCE) |
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180 |
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181 |
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182 CYG_TEST_FINISH("Finished tests from testcase " __FILE__ " for C library " |
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183 "realloc() function"); |
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184 } // main() |
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185 |
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186 // EOF realloc.c |
