| /* |
| * getrusage03_child.c - a child program executed by getrusage03 |
| * |
| * Copyright (C) 2011 Red Hat, Inc. |
| * This program is free software; you can redistribute it and/or |
| * modify it under the terms of version 2 of the GNU General Public |
| * License as published by the Free Software Foundation. |
| * |
| * This program is distributed in the hope that it would be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. |
| * |
| * Further, this software is distributed without any warranty that it |
| * is free of the rightful claim of any third person regarding |
| * infringement or the like. Any license provided herein, whether |
| * implied or otherwise, applies only to this software file. Patent |
| * licenses, if any, provided herein do not apply to combinations of |
| * this program with other software, or any other product whatsoever. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write the Free Software |
| * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
| * 02110-1301, USA. |
| */ |
| #include <sys/types.h> |
| #include <sys/resource.h> |
| #include <sys/time.h> |
| #include <sys/wait.h> |
| #include <errno.h> |
| #include <unistd.h> |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <string.h> |
| |
| #include "test.h" |
| #include "safe_macros.h" |
| |
| char *TCID = "getrusage03_child"; |
| int TST_TOTAL = 1; |
| |
| #define DELTA_MAX 10240 |
| |
| static int opt_consume, opt_grand, opt_show, opt_self, opt_child; |
| static char *consume_str, *grand_consume_str, *self_str, *child_str; |
| |
| option_t child_options[] = { |
| {"n:", &opt_consume, &consume_str}, |
| {"g:", &opt_grand, &grand_consume_str}, |
| {"v", &opt_show, NULL}, |
| {"s:", &opt_self, &self_str}, |
| {"l:", &opt_child, &child_str}, |
| {NULL, NULL, NULL} |
| }; |
| |
| static void usage(void); |
| static void consume(int mega); |
| static void setup(void); |
| static void cleanup(void); |
| |
| int main(int argc, char *argv[]) |
| { |
| int lc; |
| pid_t pid; |
| long maxrss_self, maxrss_children, delta; |
| long consume_nr, grand_consume_nr, self_nr, child_nr; |
| struct rusage ru; |
| const char *msg; |
| |
| msg = parse_opts(argc, argv, child_options, usage); |
| if (msg != NULL) |
| tst_brkm(TBROK, NULL, "OPTION PARSING ERROR - %s", msg); |
| |
| setup(); |
| |
| for (lc = 0; TEST_LOOPING(lc); lc++) { |
| tst_count = 0; |
| |
| if (opt_consume) { |
| consume_nr = SAFE_STRTOL(cleanup, |
| consume_str, 0, LONG_MAX); |
| tst_resm(TINFO, "child allocate %ldMB", consume_nr); |
| consume(consume_nr); |
| } |
| |
| if (opt_grand) { |
| grand_consume_nr = SAFE_STRTOL(cleanup, |
| grand_consume_str, 0, |
| LONG_MAX); |
| tst_resm(TINFO, "grandchild allocate %ldMB", |
| grand_consume_nr); |
| switch (pid = fork()) { |
| case -1: |
| tst_brkm(TBROK, cleanup, "fork"); |
| case 0: |
| consume(grand_consume_nr); |
| exit(0); |
| default: |
| break; |
| } |
| while (waitpid(-1, &pid, WUNTRACED | WCONTINUED) > 0) |
| if (WEXITSTATUS(pid) != 0) |
| tst_brkm(TBROK | TERRNO, cleanup, |
| "child exit status is not 0"); |
| } |
| |
| if (opt_show) { |
| SAFE_GETRUSAGE(cleanup, RUSAGE_SELF, &ru); |
| maxrss_self = ru.ru_maxrss; |
| SAFE_GETRUSAGE(cleanup, RUSAGE_CHILDREN, &ru); |
| maxrss_children = ru.ru_maxrss; |
| tst_resm(TINFO, "exec.self = %ld, exec.children = %ld", |
| maxrss_self, maxrss_children); |
| if (opt_self) { |
| self_nr = SAFE_STRTOL(cleanup, |
| self_str, 0, LONG_MAX); |
| delta = maxrss_self - self_nr; |
| if (delta >= -DELTA_MAX && delta <= DELTA_MAX) |
| tst_resm(TPASS, |
| "initial.self ~= exec.self"); |
| else |
| tst_resm(TFAIL, |
| "initial.self !~= exec.self"); |
| } |
| if (opt_child) { |
| child_nr = SAFE_STRTOL(cleanup, |
| child_str, 0, LONG_MAX); |
| delta = maxrss_children - child_nr; |
| if (delta >= -DELTA_MAX && delta <= DELTA_MAX) |
| tst_resm(TPASS, |
| "initial.children ~= exec.children"); |
| else |
| tst_resm(TFAIL, |
| "initial.children !~= exec.children"); |
| } |
| } |
| } |
| |
| cleanup(); |
| tst_exit(); |
| } |
| |
| static void usage(void) |
| { |
| printf(" -n NUM consume NUM MB size\n"); |
| printf(" -g NUM grandchild consume NUM MB size\n"); |
| printf(" -v verbose mode, show rusage info\n"); |
| printf(" -s NUM compare rusage_self.maxrss with given NUM\n"); |
| printf(" -l NUM compare rusage_children.maxrss with given NUM\n"); |
| } |
| |
| static void consume(int mega) |
| { |
| size_t sz; |
| void *ptr; |
| |
| sz = mega * 1024 * 1024; |
| ptr = SAFE_MALLOC(cleanup, sz); |
| memset(ptr, 0, sz); |
| } |
| |
| static void setup(void) |
| { |
| tst_sig(FORK, DEF_HANDLER, cleanup); |
| |
| TEST_PAUSE; |
| } |
| |
| static void cleanup(void) |
| { |
| } |