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comparison packages/language/c/libc/current/tests/stdlib/malloc1.c @ 0:3111d98ba7b3 ecos-v1_1-release

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Initial commit of eCos version 1.1
author jlarmour
date Tue, 11 May 1999 11:16:07 +0000
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children 443894e2e912
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1 //=================================================================
2 //
3 // malloc1.c
4 //
5 // Testcase for C library malloc(), calloc() and free()
6 //
7 //=================================================================
8 //####COPYRIGHTBEGIN####
9 //
10 // -------------------------------------------
11 // The contents of this file are subject to the Cygnus eCos Public License
12 // Version 1.0 (the "License"); you may not use this file except in
13 // compliance with the License. You may obtain a copy of the License at
14 // http://sourceware.cygnus.com/ecos
15 //
16 // Software distributed under the License is distributed on an "AS IS"
17 // basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
18 // License for the specific language governing rights and limitations under
19 // the License.
20 //
21 // The Original Code is eCos - Embedded Cygnus Operating System, released
22 // September 30, 1998.
23 //
24 // The Initial Developer of the Original Code is Cygnus. Portions created
25 // by Cygnus are Copyright (C) 1998 Cygnus Solutions. All Rights Reserved.
26 // -------------------------------------------
27 //
28 //####COPYRIGHTEND####
29 //=================================================================
30 //#####DESCRIPTIONBEGIN####
31 //
32 // Author(s): jlarmour@cygnus.co.uk
33 // Contributors: jlarmour@cygnus.co.uk
34 // Date: 1998/6/3
35 // Description: Contains testcode for C library malloc(), calloc() and
36 // free() functions
37 //
38 //
39 //####DESCRIPTIONEND####
40
41 // Declarations for test system:
42 //
43 // TESTCASE_TYPE=CYG_TEST_MODULE
44
45 // INCLUDES
46
47 #include <pkgconf/libc.h> // config header for C library so we can know size
48 // of malloc pool
49 #include <stdlib.h>
50 #include <cyg/infra/testcase.h>
51 #include <sys/cstartup.h> // C library initialisation
52
53
54 // FUNCTIONS
55
56 externC void
57 cyg_package_start( void )
58 {
59 #ifdef CYGPKG_LIBC
60 cyg_iso_c_start();
61 #else
62 (void)main(0, NULL);
63 #endif
64 } // cyg_package_start()
65
66
67 int
68 main( int argc, char *argv[] )
69 {
70 #if defined(CYGPKG_LIBC) && defined(CYGPKG_LIBC_MALLOC)
71 int *i;
72 char *str, *str2, *str3;
73 int j;
74 #endif
75
76 CYG_TEST_INIT();
77
78 CYG_TEST_INFO("Starting tests from testcase " __FILE__ " for C library "
79 "malloc(), calloc() and free() functions");
80
81 #if defined(CYGPKG_LIBC) && defined(CYGPKG_LIBC_MALLOC)
82
83 // Test 1
84 i = (int *) malloc( sizeof(int) );
85
86 // check if it should fit into pool
87 if (sizeof(int) > CYGNUM_LIBC_MALLOC_MEMPOOL_SIZE)
88 {
89 // didn't fit into pool, so should be NULL
90 CYG_TEST_PASS_FAIL( i == NULL,
91 "1 int malloc with no space left works" );
92 }
93 else
94 {
95 // since it should fit into pool, we can fiddle with i
96 *i=-12345;
97 CYG_TEST_PASS_FAIL( i && (*i==-12345),
98 "1 int malloc with space left works" );
99 free(i);
100 } // else
101
102 // Test 2
103 str=(char *) malloc( 4096 );
104
105 if ( 4096 > CYGNUM_LIBC_MALLOC_MEMPOOL_SIZE)
106 {
107 // didn't fit into pool, so should be NULL
108 CYG_TEST_PASS_FAIL( str == NULL,"4K string with no space left works" );
109 }
110 else
111 {
112 // since it should fit into pool, we can fiddle with it.
113 for (j=0; j<1024; j++)
114 {
115 str[j*4] = 'f';
116 str[(j*4)+1] = 'r';
117 str[(j*4)+2] = 'e';
118 str[(j*4)+3] = 'd';
119 } // for
120
121 for (j=0; j<1024; j++)
122 {
123 if ( ((str[j*4] != 'f') ||
124 (str[(j*4)+1] != 'r') ||
125 (str[(j*4)+2] != 'e') ||
126 (str[(j*4)+3] != 'd')) )
127 break;
128 } // for
129
130 // did j reach the top?
131 CYG_TEST_PASS_FAIL( j==1024, "4K string with space left works" );
132
133 free(str);
134 } // else
135
136
137 // Test 3
138 str=(char *) calloc( 2, 1024 );
139
140 if ( 2048 > CYGNUM_LIBC_MALLOC_MEMPOOL_SIZE)
141 {
142 // didn't fit into pool, so should be NULL
143 CYG_TEST_PASS_FAIL( str == NULL,
144 "calloc 2K string with no space left works" );
145 }
146 else
147 {
148 // check its zeroed
149 for ( j=0; j<2048; j++ )
150 {
151 if (str[j] != 0)
152 break;
153 } // for
154
155 CYG_TEST_PASS_FAIL( j==2048, "calloc 2K string is cleared" );
156
157 // since it should fit into pool, we can fiddle with it.
158 for (j=0; j<512; j++)
159 {
160 str[j*4] = 'j';
161 str[(j*4)+1] = 'i';
162 str[(j*4)+2] = 'f';
163 str[(j*4)+3] = 'l';
164 } // for
165
166 for (j=0; j<512; j++)
167 {
168 if ( ((str[j*4] != 'j') ||
169 (str[(j*4)+1] != 'i') ||
170 (str[(j*4)+2] != 'f') ||
171 (str[(j*4)+3] != 'l')) )
172 break;
173 } // for
174
175 // did j reach the top?
176 CYG_TEST_PASS_FAIL( j==512,
177 "calloc 2K string - with space left works" );
178
179 free(str);
180 } // else
181
182
183 // Test 4
184 str=(char *)malloc( CYGNUM_LIBC_MALLOC_MEMPOOL_SIZE+1 );
185
186 CYG_TEST_PASS_FAIL( str==NULL, "malloc too much data returns NULL" );
187
188 // Test 5
189 str=(char *)calloc( 1, CYGNUM_LIBC_MALLOC_MEMPOOL_SIZE+1 );
190 CYG_TEST_PASS_FAIL( str==NULL, "calloc too much data returns NULL" );
191
192 // Test 6
193 str=(char *)malloc(0);
194 str=(char *)calloc(0, 1);
195 str=(char *)calloc(1, 0);
196 str=(char *)calloc(0, 0);
197 // simply shouldn't barf by this point
198
199 CYG_TEST_PASS_FAIL( 1, "malloc and calloc of 0 bytes doesn't crash" );
200
201 // Test 7
202 str = (char *)malloc(10);
203 i = (int *)malloc(sizeof(int));
204 str2 = (char *)malloc(10);
205
206 str3=(char *)i;
207
208 CYG_TEST_PASS_FAIL( ((str3 <= str-sizeof(int)) || (str >= &str[10])) &&
209 ((str3 <= str2-sizeof(int)) || (str3 >= &str2[10])) &&
210 ((str+10 <= str2) || (str2+10 <= str)),
211 "Objects don't overlap" );
212
213 // Test 8
214
215 free(i);
216 i=(int *)malloc(sizeof(int)*2);
217 str3=(char *)i;
218
219 CYG_TEST_PASS_FAIL( ((str3 <= str-sizeof(int)) || (str3 >= &str[10])) &&
220 ((str3 <= str2-sizeof(int)) || (str3 >= &str2[10])) &&
221 ((&str[10] <= str2) || (&str2[10] <= str)),
222 "Objects don't overlap when middle is freed" );
223
224 free(i);
225 free(str);
226 free(str2);
227
228 #else
229 CYG_TEST_PASS("Testing is not applicable to this configuration");
230 #endif // if defined(CYGPKG_LIBC) && defined(CYGPKG_LIBC_MALLOC)
231
232 CYG_TEST_FINISH("Finished tests from testcase " __FILE__ " for C library "
233 "malloc(), calloc() and free() functions");
234 } // main()
235
236 // EOF malloc1.c