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annotate packages/services/memalloc/common/current/tests/realloc.c @ 115:6ed91473a1cd ecos-sw-2000-08-21

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Merge from eCos master repository on 2000-08-21-22:40:54-BST
author jlarmour
date Fri, 25 Aug 2000 17:32:38 +0000
parents
children 518f42066aba
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115
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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 Red Hat eCos Public License
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12 // Version 1.1 (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://www.redhat.com/
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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 Configurable Operating System,
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22 // released September 30, 1998.
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23 //
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24 // The Initial Developer of the Original Code is Red Hat.
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25 // Portions created by Red Hat are
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26 // Copyright (C) 1998, 1999, 2000 Red Hat, Inc.
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27 // All Rights Reserved.
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28 // -------------------------------------------
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29 //
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30 //####COPYRIGHTEND####
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31 //=================================================================
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32 //#####DESCRIPTIONBEGIN####
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33 //
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34 // Author(s): jlarmour
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35 // Contributors:
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36 // Date: 2000-04-30
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37 // Description: Contains testcode for C library realloc() function
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38 //
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39 //
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40 //####DESCRIPTIONEND####
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41
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42
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43 // INCLUDES
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44
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45 #include <pkgconf/system.h> // Overall system configuration
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46 #include <pkgconf/memalloc.h> // config header
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47 #ifdef CYGPKG_ISOINFRA
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48 # include <pkgconf/isoinfra.h>
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49 # include <stdlib.h>
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50 #endif
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51 #include <cyg/infra/testcase.h>
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52
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53 #if !defined(CYGPKG_ISOINFRA)
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54 # define NA_MSG "Requires isoinfra package"
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55 #elif !CYGINT_ISO_MAIN_STARTUP
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56 # define NA_MSG "Requires main() to be called"
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57 #elif !CYGINT_ISO_MALLOC
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58 # define NA_MSG "Requires malloc"
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59 #elif !CYGINT_ISO_MALLINFO
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60 # define NA_MSG "Requires mallinfo"
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61 #endif
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62
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63 #ifdef NA_MSG
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64 void
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65 cyg_start()
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66 {
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67 CYG_TEST_INIT();
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68 CYG_TEST_NA( NA_MSG );
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69 CYG_TEST_FINISH("Done");
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70 }
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71 #else
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72
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73
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74 // FUNCTIONS
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75
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76 static const char alphabet[]="abcdefghijklmnopqrstuvwxyz{-}[]#';:@~!$^&*()"
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77 "ABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890";
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78
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79 extern int
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80 cyg_memalloc_maxalloc( void );
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81
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82 static int
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83 compare_with_alphabet( char *buf, int size, int offset )
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84 {
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85 int i, buf_offset;
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86
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87 for (i=offset, buf_offset=0;
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88 buf_offset < size;
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89 buf_offset++,i++ ) {
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90
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91 if ( i==sizeof(alphabet)-1 )
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92 i=0;
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93
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94 if ( buf[buf_offset] != alphabet[i] ) {
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95 CYG_TEST_FAIL( "buffer has not retained correct data!");
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96 return 0; // fail
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97 } // if
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98 } // for
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99
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100 return 1; // success
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101 } // compare_with_alphabet()
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102
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103 static int
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104 fill_with_alphabet( char *buf, int size, int offset )
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105 {
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106 int i, buf_offset;
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107
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108 for (i=offset, buf_offset=0;
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109 buf_offset < size;
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110 buf_offset++,i++ ) {
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111
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112 if ( i==sizeof(alphabet)-1 )
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113 i=0;
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114
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115 buf[buf_offset] = alphabet[i];
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116
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117 } // for
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118
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119 return compare_with_alphabet( buf, size, offset); // be sure
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120 } // fill_with_alphabet()
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121
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122
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123 int
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124 main( int argc, char *argv[] )
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125 {
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126 char *str;
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127 int size;
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128 int poolmax;
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129
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130 CYG_TEST_INIT();
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131
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132 CYG_TEST_INFO("Starting tests from testcase " __FILE__ " for C library "
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133 "realloc() function");
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134
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135 poolmax = mallinfo().maxfree;
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136
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137 if ( poolmax <= 0 ) {
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138 CYG_TEST_FAIL_FINISH( "Can't determine allocation size to use" );
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139 }
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140
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141 size = poolmax/2;
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142
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143 str = (char *)realloc( NULL, size );
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144 CYG_TEST_PASS_FAIL( str != NULL, "realloc doing only allocation");
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145 CYG_TEST_PASS_FAIL( fill_with_alphabet( str, size, 0 ),
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146 "allocation usability");
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147
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148 str = (char *)realloc( str, 0 );
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149 CYG_TEST_PASS_FAIL( str == NULL, "realloc doing implicit free" );
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150
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151 str = (char *)realloc( NULL, size/2 );
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152 CYG_TEST_PASS_FAIL( str != NULL, "realloc doing allocation to half size");
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153 CYG_TEST_PASS_FAIL( fill_with_alphabet( str, size/2, 5 ),
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154 "half allocation usability");
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155
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156 str = (char *)realloc( str, size );
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157 CYG_TEST_PASS_FAIL( str != NULL,
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158 "reallocing allocation back to normal size");
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159 CYG_TEST_PASS_FAIL( compare_with_alphabet(str, size/2, 5),
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160 "after realloc to normal size, old contents kept" );
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161 CYG_TEST_PASS_FAIL( fill_with_alphabet( str, size, 3 ),
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162 "reallocation normal size usability");
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163
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164 str = (char *)realloc( str, size/4 );
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165 CYG_TEST_PASS_FAIL( str != NULL, "reallocing allocation to quarter size");
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166 CYG_TEST_PASS_FAIL( compare_with_alphabet(str, size/4, 3),
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167 "after realloc to quarter size, old contents kept" );
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168 CYG_TEST_PASS_FAIL( fill_with_alphabet( str, size/4, 1 ),
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169 "reallocation quarter size usability");
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170
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171 CYG_TEST_PASS_FAIL( realloc( str, size*100 ) == NULL,
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172 "reallocing allocation that is too large" );
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173 CYG_TEST_PASS_FAIL( compare_with_alphabet( str, size/4, 1 ),
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174 "Checking old contents maintained despite failure" );
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175
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176 str = (char *)realloc( str, 0 );
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177 CYG_TEST_PASS_FAIL( str == NULL, "realloc doing implicit free again" );
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178
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179 CYG_TEST_FINISH("Finished tests from testcase " __FILE__ " for C library "
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180 "realloc() function");
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181 } // main()
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182
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183 #endif // ifndef NA_MSG
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184
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185 // EOF realloc.c