Caspar Zhang | 817c782 | 2011-06-30 01:50:33 +0800 | [diff] [blame] | 1 | /* |
| 2 | * getrusage03_child.c - a child program executed by getrusage03 |
| 3 | * |
| 4 | * Copyright (C) 2011 Red Hat, Inc. |
| 5 | * This program is free software; you can redistribute it and/or |
| 6 | * modify it under the terms of version 2 of the GNU General Public |
| 7 | * License as published by the Free Software Foundation. |
| 8 | * |
| 9 | * This program is distributed in the hope that it would be useful, |
| 10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. |
| 12 | * |
| 13 | * Further, this software is distributed without any warranty that it |
| 14 | * is free of the rightful claim of any third person regarding |
| 15 | * infringement or the like. Any license provided herein, whether |
| 16 | * implied or otherwise, applies only to this software file. Patent |
| 17 | * licenses, if any, provided herein do not apply to combinations of |
| 18 | * this program with other software, or any other product whatsoever. |
| 19 | * |
| 20 | * You should have received a copy of the GNU General Public License |
| 21 | * along with this program; if not, write the Free Software |
| 22 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
| 23 | * 02110-1301, USA. |
| 24 | */ |
| 25 | #include <sys/types.h> |
| 26 | #include <sys/resource.h> |
| 27 | #include <sys/time.h> |
| 28 | #include <sys/wait.h> |
| 29 | #include <errno.h> |
| 30 | #include <unistd.h> |
| 31 | #include <stdio.h> |
| 32 | #include <stdlib.h> |
| 33 | #include <string.h> |
| 34 | |
| 35 | #include "test.h" |
Caspar Zhang | 817c782 | 2011-06-30 01:50:33 +0800 | [diff] [blame] | 36 | #include "safe_macros.h" |
| 37 | |
| 38 | char *TCID = "getrusage03_child"; |
| 39 | int TST_TOTAL = 1; |
| 40 | |
| 41 | #define DELTA_MAX 10240 |
| 42 | |
| 43 | static int opt_consume, opt_grand, opt_show, opt_self, opt_child; |
| 44 | static char *consume_str, *grand_consume_str, *self_str, *child_str; |
| 45 | |
| 46 | option_t child_options[] = { |
Wanlong Gao | 354ebb4 | 2012-12-07 10:10:04 +0800 | [diff] [blame] | 47 | {"n:", &opt_consume, &consume_str}, |
| 48 | {"g:", &opt_grand, &grand_consume_str}, |
| 49 | {"v", &opt_show, NULL}, |
| 50 | {"s:", &opt_self, &self_str}, |
| 51 | {"l:", &opt_child, &child_str}, |
| 52 | {NULL, NULL, NULL} |
Caspar Zhang | 817c782 | 2011-06-30 01:50:33 +0800 | [diff] [blame] | 53 | }; |
| 54 | |
| 55 | static void usage(void); |
| 56 | static void consume(int mega); |
Caspar Zhang | 817c782 | 2011-06-30 01:50:33 +0800 | [diff] [blame] | 57 | static void setup(void); |
| 58 | static void cleanup(void); |
| 59 | |
| 60 | int main(int argc, char *argv[]) |
| 61 | { |
| 62 | int lc; |
| 63 | pid_t pid; |
| 64 | long maxrss_self, maxrss_children, delta; |
| 65 | long consume_nr, grand_consume_nr, self_nr, child_nr; |
| 66 | struct rusage ru; |
Cyril Hrubis | 0b9589f | 2014-05-27 17:40:33 +0200 | [diff] [blame] | 67 | const char *msg; |
Caspar Zhang | 817c782 | 2011-06-30 01:50:33 +0800 | [diff] [blame] | 68 | |
| 69 | msg = parse_opts(argc, argv, child_options, usage); |
| 70 | if (msg != NULL) |
| 71 | tst_brkm(TBROK, NULL, "OPTION PARSING ERROR - %s", msg); |
| 72 | |
| 73 | setup(); |
| 74 | |
| 75 | for (lc = 0; TEST_LOOPING(lc); lc++) { |
Caspar Zhang | d59a659 | 2013-03-07 14:59:12 +0800 | [diff] [blame] | 76 | tst_count = 0; |
Caspar Zhang | 817c782 | 2011-06-30 01:50:33 +0800 | [diff] [blame] | 77 | |
| 78 | if (opt_consume) { |
Caspar Zhang | 123f800 | 2012-02-10 10:42:32 +0800 | [diff] [blame] | 79 | consume_nr = SAFE_STRTOL(cleanup, |
Wanlong Gao | 354ebb4 | 2012-12-07 10:10:04 +0800 | [diff] [blame] | 80 | consume_str, 0, LONG_MAX); |
Caspar Zhang | 817c782 | 2011-06-30 01:50:33 +0800 | [diff] [blame] | 81 | tst_resm(TINFO, "child allocate %ldMB", consume_nr); |
| 82 | consume(consume_nr); |
| 83 | } |
| 84 | |
| 85 | if (opt_grand) { |
Caspar Zhang | 123f800 | 2012-02-10 10:42:32 +0800 | [diff] [blame] | 86 | grand_consume_nr = SAFE_STRTOL(cleanup, |
Wanlong Gao | 354ebb4 | 2012-12-07 10:10:04 +0800 | [diff] [blame] | 87 | grand_consume_str, 0, |
| 88 | LONG_MAX); |
Caspar Zhang | 817c782 | 2011-06-30 01:50:33 +0800 | [diff] [blame] | 89 | tst_resm(TINFO, "grandchild allocate %ldMB", |
Wanlong Gao | 354ebb4 | 2012-12-07 10:10:04 +0800 | [diff] [blame] | 90 | grand_consume_nr); |
Caspar Zhang | 817c782 | 2011-06-30 01:50:33 +0800 | [diff] [blame] | 91 | switch (pid = fork()) { |
| 92 | case -1: |
| 93 | tst_brkm(TBROK, cleanup, "fork"); |
| 94 | case 0: |
| 95 | consume(grand_consume_nr); |
| 96 | exit(0); |
| 97 | default: |
| 98 | break; |
| 99 | } |
Wanlong Gao | 354ebb4 | 2012-12-07 10:10:04 +0800 | [diff] [blame] | 100 | while (waitpid(-1, &pid, WUNTRACED | WCONTINUED) > 0) |
Caspar Zhang | 817c782 | 2011-06-30 01:50:33 +0800 | [diff] [blame] | 101 | if (WEXITSTATUS(pid) != 0) |
Wanlong Gao | 354ebb4 | 2012-12-07 10:10:04 +0800 | [diff] [blame] | 102 | tst_brkm(TBROK | TERRNO, cleanup, |
| 103 | "child exit status is not 0"); |
Caspar Zhang | 817c782 | 2011-06-30 01:50:33 +0800 | [diff] [blame] | 104 | } |
| 105 | |
| 106 | if (opt_show) { |
| 107 | SAFE_GETRUSAGE(cleanup, RUSAGE_SELF, &ru); |
| 108 | maxrss_self = ru.ru_maxrss; |
| 109 | SAFE_GETRUSAGE(cleanup, RUSAGE_CHILDREN, &ru); |
| 110 | maxrss_children = ru.ru_maxrss; |
| 111 | tst_resm(TINFO, "exec.self = %ld, exec.children = %ld", |
Wanlong Gao | 354ebb4 | 2012-12-07 10:10:04 +0800 | [diff] [blame] | 112 | maxrss_self, maxrss_children); |
Caspar Zhang | 817c782 | 2011-06-30 01:50:33 +0800 | [diff] [blame] | 113 | if (opt_self) { |
Caspar Zhang | 123f800 | 2012-02-10 10:42:32 +0800 | [diff] [blame] | 114 | self_nr = SAFE_STRTOL(cleanup, |
Wanlong Gao | 354ebb4 | 2012-12-07 10:10:04 +0800 | [diff] [blame] | 115 | self_str, 0, LONG_MAX); |
Caspar Zhang | 817c782 | 2011-06-30 01:50:33 +0800 | [diff] [blame] | 116 | delta = maxrss_self - self_nr; |
| 117 | if (delta >= -DELTA_MAX && delta <= DELTA_MAX) |
| 118 | tst_resm(TPASS, |
Wanlong Gao | 354ebb4 | 2012-12-07 10:10:04 +0800 | [diff] [blame] | 119 | "initial.self ~= exec.self"); |
Caspar Zhang | 817c782 | 2011-06-30 01:50:33 +0800 | [diff] [blame] | 120 | else |
| 121 | tst_resm(TFAIL, |
Wanlong Gao | 354ebb4 | 2012-12-07 10:10:04 +0800 | [diff] [blame] | 122 | "initial.self !~= exec.self"); |
Caspar Zhang | 817c782 | 2011-06-30 01:50:33 +0800 | [diff] [blame] | 123 | } |
| 124 | if (opt_child) { |
Caspar Zhang | 123f800 | 2012-02-10 10:42:32 +0800 | [diff] [blame] | 125 | child_nr = SAFE_STRTOL(cleanup, |
Wanlong Gao | 354ebb4 | 2012-12-07 10:10:04 +0800 | [diff] [blame] | 126 | child_str, 0, LONG_MAX); |
Caspar Zhang | 817c782 | 2011-06-30 01:50:33 +0800 | [diff] [blame] | 127 | delta = maxrss_children - child_nr; |
| 128 | if (delta >= -DELTA_MAX && delta <= DELTA_MAX) |
| 129 | tst_resm(TPASS, |
Wanlong Gao | 354ebb4 | 2012-12-07 10:10:04 +0800 | [diff] [blame] | 130 | "initial.children ~= exec.children"); |
Caspar Zhang | 817c782 | 2011-06-30 01:50:33 +0800 | [diff] [blame] | 131 | else |
| 132 | tst_resm(TFAIL, |
Wanlong Gao | 354ebb4 | 2012-12-07 10:10:04 +0800 | [diff] [blame] | 133 | "initial.children !~= exec.children"); |
Caspar Zhang | 817c782 | 2011-06-30 01:50:33 +0800 | [diff] [blame] | 134 | } |
| 135 | } |
| 136 | } |
| 137 | |
| 138 | cleanup(); |
| 139 | tst_exit(); |
| 140 | } |
| 141 | |
| 142 | static void usage(void) |
| 143 | { |
| 144 | printf(" -n NUM consume NUM MB size\n"); |
| 145 | printf(" -g NUM grandchild consume NUM MB size\n"); |
| 146 | printf(" -v verbose mode, show rusage info\n"); |
| 147 | printf(" -s NUM compare rusage_self.maxrss with given NUM\n"); |
| 148 | printf(" -l NUM compare rusage_children.maxrss with given NUM\n"); |
| 149 | } |
| 150 | |
| 151 | static void consume(int mega) |
| 152 | { |
| 153 | size_t sz; |
| 154 | void *ptr; |
| 155 | |
Wanlong Gao | 354ebb4 | 2012-12-07 10:10:04 +0800 | [diff] [blame] | 156 | sz = mega * 1024 * 1024; |
Caspar Zhang | 817c782 | 2011-06-30 01:50:33 +0800 | [diff] [blame] | 157 | ptr = SAFE_MALLOC(cleanup, sz); |
| 158 | memset(ptr, 0, sz); |
| 159 | } |
| 160 | |
Caspar Zhang | 817c782 | 2011-06-30 01:50:33 +0800 | [diff] [blame] | 161 | static void setup(void) |
| 162 | { |
| 163 | tst_sig(FORK, DEF_HANDLER, cleanup); |
| 164 | |
| 165 | TEST_PAUSE; |
| 166 | } |
| 167 | |
| 168 | static void cleanup(void) |
| 169 | { |
Caspar Zhang | 817c782 | 2011-06-30 01:50:33 +0800 | [diff] [blame] | 170 | } |