robbiew | 13d2fb4 | 2002-12-04 19:16:13 +0000 | [diff] [blame] | 1 | /* |
| 2 | * |
| 3 | * Copyright (c) International Business Machines Corp., 2002 |
| 4 | * |
| 5 | * This program is free software; you can redistribute it and/or modify |
| 6 | * it under the terms of the GNU General Public License as published by |
| 7 | * the Free Software Foundation; either version 2 of the License, or |
| 8 | * (at your option) any later version. |
| 9 | * |
| 10 | * This program is distributed in the hope that it will be useful, |
| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See |
| 13 | * the GNU General Public License for more details. |
| 14 | * |
| 15 | * You should have received a copy of the GNU General Public License |
| 16 | * along with this program; if not, write to the Free Software |
Wanlong Gao | 4548c6c | 2012-10-19 18:03:36 +0800 | [diff] [blame] | 17 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
robbiew | 13d2fb4 | 2002-12-04 19:16:13 +0000 | [diff] [blame] | 18 | */ |
| 19 | |
| 20 | /* 11/05/2002 Port to LTP robbiew@us.ibm.com */ |
| 21 | /* 06/30/2001 Port to Linux nsharoff@us.ibm.com */ |
| 22 | |
Wanlong Gao | 354ebb4 | 2012-12-07 10:10:04 +0800 | [diff] [blame] | 23 | /* page02.c */ |
robbiew | 13d2fb4 | 2002-12-04 19:16:13 +0000 | [diff] [blame] | 24 | /*====================================================================== |
| 25 | =================== TESTPLAN SEGMENT =================== |
| 26 | CALLS: malloc(3) |
| 27 | |
| 28 | Run with KILL flag. |
| 29 | |
| 30 | >KEYS: < paging behavior |
| 31 | >WHAT: < Does the system balk at heavy demands on it's paging facilities? |
| 32 | >HOW: < Create a number of process, each of which requests a large |
| 33 | < chunk of memory to be assigned to an array. Write to each |
| 34 | < element in that array, and verify that what was written/stored |
| 35 | < is what was expected. |
| 36 | Writes start in middle of array and proceede to ends. |
| 37 | >BUGS: < |
| 38 | ======================================================================*/ |
| 39 | |
| 40 | #include <stdio.h> |
| 41 | #include <signal.h> |
robbiew | c0325f7 | 2003-02-10 18:46:26 +0000 | [diff] [blame] | 42 | #include <errno.h> |
robbiew | 13d2fb4 | 2002-12-04 19:16:13 +0000 | [diff] [blame] | 43 | |
| 44 | #ifdef LINUX |
| 45 | #include <stdlib.h> |
| 46 | #include <unistd.h> |
Garrett Cooper | bacc849 | 2011-01-14 00:36:17 -0800 | [diff] [blame] | 47 | #include <stdlib.h> |
robbiew | 13d2fb4 | 2002-12-04 19:16:13 +0000 | [diff] [blame] | 48 | #include <sys/wait.h> |
| 49 | #endif |
| 50 | |
| 51 | /** LTP Port **/ |
| 52 | #include "test.h" |
robbiew | 13d2fb4 | 2002-12-04 19:16:13 +0000 | [diff] [blame] | 53 | |
| 54 | #define FAILED 0 |
| 55 | #define PASSED 1 |
| 56 | |
| 57 | int local_flag = PASSED; |
| 58 | int block_number; |
robbiew | 13d2fb4 | 2002-12-04 19:16:13 +0000 | [diff] [blame] | 59 | |
Wanlong Gao | 354ebb4 | 2012-12-07 10:10:04 +0800 | [diff] [blame] | 60 | char *TCID = "page02"; /* Test program identifier. */ |
| 61 | int TST_TOTAL = 1; /* Total number of test cases. */ |
robbiew | 13d2fb4 | 2002-12-04 19:16:13 +0000 | [diff] [blame] | 62 | /**************/ |
| 63 | |
Wanlong Gao | 354ebb4 | 2012-12-07 10:10:04 +0800 | [diff] [blame] | 64 | int bd_arg(char *); |
robbiew | 13d2fb4 | 2002-12-04 19:16:13 +0000 | [diff] [blame] | 65 | int chld_flag; |
| 66 | int parent_pid; |
| 67 | |
| 68 | int main(argc, argv) |
Wanlong Gao | 354ebb4 | 2012-12-07 10:10:04 +0800 | [diff] [blame] | 69 | int argc; |
| 70 | char *argv[]; |
robbiew | 13d2fb4 | 2002-12-04 19:16:13 +0000 | [diff] [blame] | 71 | { |
| 72 | int nchild; |
| 73 | int memory_size, half_memory_size; |
| 74 | int error_count, i, j, pid, status; |
| 75 | int *memory_pointer; |
| 76 | int *up_pointer, *down_pointer; |
| 77 | int child, count; |
| 78 | int chld(); |
| 79 | |
| 80 | parent_pid = getpid(); |
Wanlong Gao | 354ebb4 | 2012-12-07 10:10:04 +0800 | [diff] [blame] | 81 | tst_tmpdir(); |
subrata_modak | bdbaec5 | 2009-02-26 12:14:51 +0000 | [diff] [blame] | 82 | |
robbiew | 13d2fb4 | 2002-12-04 19:16:13 +0000 | [diff] [blame] | 83 | if (signal(SIGUSR1, (void (*)())chld) == SIG_ERR) { |
Wanlong Gao | 354ebb4 | 2012-12-07 10:10:04 +0800 | [diff] [blame] | 84 | tst_resm(TBROK, "signal failed"); |
robbiew | 13d2fb4 | 2002-12-04 19:16:13 +0000 | [diff] [blame] | 85 | exit(1); |
| 86 | } |
| 87 | |
| 88 | if (argc < 2) { |
| 89 | memory_size = 128 * 1024; |
| 90 | nchild = 5; |
| 91 | } else if (argc == 3) { |
| 92 | if (sscanf(argv[1], "%d", &memory_size) != 1) |
| 93 | bd_arg(argv[1]); |
| 94 | if (sscanf(argv[2], "%d", &nchild) != 1) |
| 95 | bd_arg(argv[2]); |
| 96 | } else { |
| 97 | printf("page02 [memory size (words)] [nchild]\n"); |
| 98 | tst_resm(TCONF, "\tBad arg count.\n"); |
| 99 | exit(1); |
| 100 | } |
Wanlong Gao | 354ebb4 | 2012-12-07 10:10:04 +0800 | [diff] [blame] | 101 | half_memory_size = memory_size / 2; |
robbiew | 13d2fb4 | 2002-12-04 19:16:13 +0000 | [diff] [blame] | 102 | |
robbiew | 13d2fb4 | 2002-12-04 19:16:13 +0000 | [diff] [blame] | 103 | error_count = 0; |
| 104 | |
| 105 | /****************************************/ |
Wanlong Gao | 354ebb4 | 2012-12-07 10:10:04 +0800 | [diff] [blame] | 106 | /* */ |
| 107 | /* attempt to fork a number of */ |
| 108 | /* identical processes */ |
| 109 | /* */ |
robbiew | 13d2fb4 | 2002-12-04 19:16:13 +0000 | [diff] [blame] | 110 | /****************************************/ |
| 111 | |
Garrett Cooper | df3eb16 | 2010-11-28 22:44:32 -0800 | [diff] [blame] | 112 | for (i = 1; i <= nchild; i++) { |
robbiew | 13d2fb4 | 2002-12-04 19:16:13 +0000 | [diff] [blame] | 113 | chld_flag = 0; |
Garrett Cooper | df3eb16 | 2010-11-28 22:44:32 -0800 | [diff] [blame] | 114 | if ((pid = fork()) == -1) { |
Wanlong Gao | 354ebb4 | 2012-12-07 10:10:04 +0800 | [diff] [blame] | 115 | tst_resm(TBROK, |
| 116 | "Fork failed (may be OK if under stress)"); |
robbiew | 13d2fb4 | 2002-12-04 19:16:13 +0000 | [diff] [blame] | 117 | tst_resm(TINFO, "System resource may be too low.\n"); |
| 118 | local_flag = PASSED; |
Cyril Hrubis | 9fa8ad0 | 2014-12-16 13:20:49 +0100 | [diff] [blame] | 119 | tst_brkm(TBROK, tst_rmdir, "Reason: %s\n", |
| 120 | strerror(errno)); |
Wanlong Gao | 354ebb4 | 2012-12-07 10:10:04 +0800 | [diff] [blame] | 121 | } else if (pid == 0) { |
robbiew | 13d2fb4 | 2002-12-04 19:16:13 +0000 | [diff] [blame] | 122 | /********************************/ |
Wanlong Gao | 354ebb4 | 2012-12-07 10:10:04 +0800 | [diff] [blame] | 123 | /* */ |
| 124 | /* allocate memory of size */ |
| 125 | /* "memory_size" */ |
| 126 | /* */ |
robbiew | 13d2fb4 | 2002-12-04 19:16:13 +0000 | [diff] [blame] | 127 | /********************************/ |
| 128 | |
Cyril Hrubis | d218f34 | 2014-09-23 13:14:56 +0200 | [diff] [blame] | 129 | memory_pointer = malloc(memory_size * sizeof(int)); |
Garrett Cooper | df3eb16 | 2010-11-28 22:44:32 -0800 | [diff] [blame] | 130 | if (memory_pointer == 0) { |
robbiew | 13d2fb4 | 2002-12-04 19:16:13 +0000 | [diff] [blame] | 131 | tst_resm(TBROK, "\tCannot malloc memory.\n"); |
| 132 | if (i < 2) { |
Wanlong Gao | 354ebb4 | 2012-12-07 10:10:04 +0800 | [diff] [blame] | 133 | tst_resm(TBROK, |
| 134 | "\tThis should not happen to first two children.\n"); |
| 135 | tst_resm(TBROK, "\tChild %d - fail.\n", |
| 136 | i); |
robbiew | 13d2fb4 | 2002-12-04 19:16:13 +0000 | [diff] [blame] | 137 | } else { |
Wanlong Gao | 354ebb4 | 2012-12-07 10:10:04 +0800 | [diff] [blame] | 138 | tst_resm(TBROK, |
| 139 | "\tThis is ok for all but first two children.\n"); |
| 140 | tst_resm(TBROK, "\tChild %d - ok.\n", |
| 141 | i); |
robbiew | 13d2fb4 | 2002-12-04 19:16:13 +0000 | [diff] [blame] | 142 | kill(parent_pid, SIGUSR1); |
| 143 | _exit(0); |
| 144 | } |
Wanlong Gao | 354ebb4 | 2012-12-07 10:10:04 +0800 | [diff] [blame] | 145 | tst_resm(TBROK, "malloc fail"); |
| 146 | tst_resm(TFAIL, |
| 147 | "\t\nImpossible to allocate memory of size %d in process %d\n", |
| 148 | memory_size, i); |
robbiew | 13d2fb4 | 2002-12-04 19:16:13 +0000 | [diff] [blame] | 149 | kill(parent_pid, SIGUSR1); |
subrata_modak | bdbaec5 | 2009-02-26 12:14:51 +0000 | [diff] [blame] | 150 | tst_exit(); |
robbiew | 13d2fb4 | 2002-12-04 19:16:13 +0000 | [diff] [blame] | 151 | } |
| 152 | kill(parent_pid, SIGUSR1); |
Garrett Cooper | 2c28215 | 2010-12-16 00:55:50 -0800 | [diff] [blame] | 153 | |
robbiew | 13d2fb4 | 2002-12-04 19:16:13 +0000 | [diff] [blame] | 154 | down_pointer = up_pointer = memory_pointer + |
Wanlong Gao | 354ebb4 | 2012-12-07 10:10:04 +0800 | [diff] [blame] | 155 | (memory_size / 2); |
robbiew | 13d2fb4 | 2002-12-04 19:16:13 +0000 | [diff] [blame] | 156 | |
| 157 | /********************************/ |
Wanlong Gao | 354ebb4 | 2012-12-07 10:10:04 +0800 | [diff] [blame] | 158 | /* */ |
| 159 | /* write to it */ |
| 160 | /* */ |
robbiew | 13d2fb4 | 2002-12-04 19:16:13 +0000 | [diff] [blame] | 161 | /********************************/ |
| 162 | |
Garrett Cooper | df3eb16 | 2010-11-28 22:44:32 -0800 | [diff] [blame] | 163 | for (j = 1; j <= half_memory_size; j++) { |
robbiew | 13d2fb4 | 2002-12-04 19:16:13 +0000 | [diff] [blame] | 164 | *(up_pointer++) = j; |
| 165 | *(down_pointer--) = j; |
| 166 | } |
| 167 | sleep(1); |
| 168 | |
| 169 | /********************************/ |
Wanlong Gao | 354ebb4 | 2012-12-07 10:10:04 +0800 | [diff] [blame] | 170 | /* */ |
| 171 | /* and read from it to */ |
| 172 | /* check that what was written */ |
| 173 | /* is still there */ |
| 174 | /* */ |
robbiew | 13d2fb4 | 2002-12-04 19:16:13 +0000 | [diff] [blame] | 175 | /********************************/ |
| 176 | |
| 177 | down_pointer = up_pointer = memory_pointer + |
Wanlong Gao | 354ebb4 | 2012-12-07 10:10:04 +0800 | [diff] [blame] | 178 | (memory_size / 2); |
robbiew | 13d2fb4 | 2002-12-04 19:16:13 +0000 | [diff] [blame] | 179 | |
Garrett Cooper | df3eb16 | 2010-11-28 22:44:32 -0800 | [diff] [blame] | 180 | for (j = 1; j <= half_memory_size; j++) { |
Wanlong Gao | 354ebb4 | 2012-12-07 10:10:04 +0800 | [diff] [blame] | 181 | if (*(up_pointer++) != j) |
| 182 | error_count++; |
| 183 | if (*(down_pointer--) != j) |
| 184 | error_count++; |
subrata_modak | bdbaec5 | 2009-02-26 12:14:51 +0000 | [diff] [blame] | 185 | } |
robbiew | 13d2fb4 | 2002-12-04 19:16:13 +0000 | [diff] [blame] | 186 | exit(error_count); |
| 187 | } |
| 188 | while (!chld_flag) |
| 189 | sleep(1); |
| 190 | } |
| 191 | |
| 192 | /****************************************/ |
Wanlong Gao | 354ebb4 | 2012-12-07 10:10:04 +0800 | [diff] [blame] | 193 | /* */ |
| 194 | /* wait for the child processes */ |
| 195 | /* to teminate and report the # */ |
| 196 | /* of deviations recognized */ |
| 197 | /* */ |
robbiew | 13d2fb4 | 2002-12-04 19:16:13 +0000 | [diff] [blame] | 198 | /****************************************/ |
| 199 | |
| 200 | count = 0; |
| 201 | while ((child = wait(&status)) > 0) { |
| 202 | #ifdef DEBUG |
Wanlong Gao | 354ebb4 | 2012-12-07 10:10:04 +0800 | [diff] [blame] | 203 | tst_resm(TINFO, "\tTest {%d} exited status %d\n", child, |
| 204 | status); |
robbiew | 13d2fb4 | 2002-12-04 19:16:13 +0000 | [diff] [blame] | 205 | #endif |
| 206 | if (status) |
| 207 | local_flag = FAILED; |
| 208 | count++; |
| 209 | } |
| 210 | |
| 211 | if (count != nchild) { |
| 212 | tst_resm(TFAIL, "\tWrong number of children waited on.\n"); |
| 213 | tst_resm(TFAIL, "\tCount = %d, expected = %d.\n", |
Wanlong Gao | 354ebb4 | 2012-12-07 10:10:04 +0800 | [diff] [blame] | 214 | count, nchild); |
robbiew | 13d2fb4 | 2002-12-04 19:16:13 +0000 | [diff] [blame] | 215 | } |
| 216 | |
Wanlong Gao | 354ebb4 | 2012-12-07 10:10:04 +0800 | [diff] [blame] | 217 | (local_flag == FAILED) ? tst_resm(TFAIL, "Test failed") |
| 218 | : tst_resm(TPASS, "Test passed"); |
| 219 | tst_rmdir(); |
| 220 | tst_exit(); |
robbiew | 13d2fb4 | 2002-12-04 19:16:13 +0000 | [diff] [blame] | 221 | |
| 222 | } |
| 223 | |
| 224 | int bd_arg(str) |
Wanlong Gao | 354ebb4 | 2012-12-07 10:10:04 +0800 | [diff] [blame] | 225 | char *str; |
robbiew | 13d2fb4 | 2002-12-04 19:16:13 +0000 | [diff] [blame] | 226 | { |
Cyril Hrubis | 526fdf8 | 2014-12-04 14:35:01 +0100 | [diff] [blame] | 227 | tst_brkm(TCONF, NULL, "\tCannot parse %s as a number.\n", str); |
robbiew | 13d2fb4 | 2002-12-04 19:16:13 +0000 | [diff] [blame] | 228 | } |
| 229 | |
| 230 | int chld() |
| 231 | { |
| 232 | if (signal(SIGUSR1, (void (*)())chld) == SIG_ERR) { |
Cyril Hrubis | 526fdf8 | 2014-12-04 14:35:01 +0100 | [diff] [blame] | 233 | tst_brkm(TBROK, NULL, "signal failed"); |
robbiew | 13d2fb4 | 2002-12-04 19:16:13 +0000 | [diff] [blame] | 234 | } |
| 235 | chld_flag++; |
subrata_modak | 43337a3 | 2009-02-26 11:43:51 +0000 | [diff] [blame] | 236 | return 0; |
Garrett Cooper | bacc849 | 2011-01-14 00:36:17 -0800 | [diff] [blame] | 237 | } |