| /* |
| * Copyright (c) 2000 Silicon Graphics, Inc. All Rights Reserved. |
| * |
| * 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., 59 |
| * Temple Place - Suite 330, Boston MA 02111-1307, USA. |
| * |
| * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy, |
| * Mountain View, CA 94043, or: |
| * |
| * http://www.sgi.com |
| * |
| * For further information regarding this notice, see: |
| * |
| * http://oss.sgi.com/projects/GenInfo/NoticeExplan/ |
| * |
| */ |
| /* $Id: brk01.c,v 1.8 2009/08/28 11:24:25 vapier Exp $ */ |
| /********************************************************** |
| * |
| * OS Test - Silicon Graphics, Inc. |
| * |
| * TEST IDENTIFIER : brk01 |
| * |
| * EXECUTED BY : anyone |
| * |
| * TEST TITLE : Basic test for brk(2) |
| * |
| * PARENT DOCUMENT : usctpl01 |
| * |
| * TEST CASE TOTAL : 1 |
| * |
| * WALL CLOCK TIME : 1 |
| * |
| * CPU TYPES : ALL |
| * |
| * AUTHOR : William Roske |
| * |
| * CO-PILOT : Dave Fenner |
| * |
| * DATE STARTED : 03/30/92 |
| * |
| * INITIAL RELEASE : UNICOS 7.0 |
| * |
| * TEST CASES |
| * |
| * 1.) brk(2) returns...(See Description) |
| * |
| * INPUT SPECIFICATIONS |
| * The standard options for system call tests are accepted. |
| * (See the parse_opts(3) man page). |
| * |
| * OUTPUT SPECIFICATIONS |
| *$ |
| * ENVIRONMENTAL NEEDS |
| * The libcuts.a and libsys.a libraries must be included in |
| * the compilation of this test. |
| * |
| * SPECIAL PROCEDURAL REQUIREMENTS |
| * None |
| * |
| * DETAILED DESCRIPTION |
| * This is a Phase I test for the brk(2) system call. It is intended |
| * to provide a limited exposure of the system call, for now. It |
| * should/will be extended when full functional tests are written for |
| * brk(2). |
| * |
| * Setup: |
| * Setup signal handling. |
| * Pause for SIGUSR1 if option specified. |
| * |
| * Test: |
| * Loop if the proper options are given. |
| * Execute system call |
| * Check return code, if system call failed (return=-1) |
| * Log the errno and Issue a FAIL message. |
| * Otherwise, Issue a PASS message. |
| * |
| * Cleanup: |
| * Print errno log and/or timing stats if options given |
| * |
| * |
| *#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#**/ |
| |
| #include <unistd.h> |
| #include <errno.h> |
| #include <string.h> |
| #include <signal.h> |
| #include <sys/param.h> |
| #include <sys/resource.h> |
| |
| #include "test.h" |
| #include "usctest.h" |
| |
| #ifndef BSIZE |
| #define BSIZE BBSIZE |
| #endif |
| |
| void setup(); |
| void cleanup(); |
| |
| #define MAX_SIZE_LC 1000 /* loop count test will reach max size */ |
| |
| char *TCID = "brk01"; /* Test program identifier. */ |
| int TST_TOTAL = 1; /* Total number of test cases. */ |
| extern int Tst_count; /* Test Case counter for tst_* routines */ |
| |
| long Max_brk_byte_size; |
| long Beg_brk_val; |
| |
| /*********************************************************************** |
| * MAIN |
| ***********************************************************************/ |
| |
| #if !defined(UCLINUX) |
| |
| int main(int ac, char **av) |
| { |
| int lc; /* loop counter */ |
| char *msg; /* message returned from parse_opts */ |
| int incr; /* increment */ |
| long nbrkpt; /* new brk point value */ |
| long cur_brk_val; /* current size returned by sbrk */ |
| long aft_brk_val; /* current size returned by sbrk */ |
| |
| /*************************************************************** |
| * parse standard options |
| ***************************************************************/ |
| if ((msg = parse_opts(ac, av, NULL, NULL)) != NULL) { |
| tst_brkm(TBROK, NULL, "OPTION PARSING ERROR - %s", msg); |
| tst_exit(); |
| } |
| |
| /*************************************************************** |
| * perform global setup for test |
| ***************************************************************/ |
| setup(); |
| |
| /* |
| * Attempt to control how fast we get to test max size. |
| * Every MAX_SIZE_LC'th lc will be fastest test will reach max size. |
| */ |
| incr = (Max_brk_byte_size - Beg_brk_val) / (MAX_SIZE_LC / 2); |
| |
| if ((incr * 2) < 4096) /* make sure that process will grow */ |
| incr += 4096 / 2; |
| |
| /*************************************************************** |
| * check looping state if -c option given |
| ***************************************************************/ |
| for (lc = 0; TEST_LOOPING(lc); lc++) { |
| |
| /* reset Tst_count in case we are looping. */ |
| Tst_count = 0; |
| |
| /* |
| * Determine new value to give brk |
| * Every even lc value, grow by 2 incr and |
| * every odd lc value, strink by one incr. |
| * If lc is equal to 3, no change, special case. |
| */ |
| cur_brk_val = (long)sbrk(0); |
| if (lc == 3) { |
| nbrkpt = cur_brk_val; /* no change, special one time case */ |
| } else if ((lc % 2) == 0) { |
| /* |
| * grow |
| */ |
| nbrkpt = cur_brk_val + (2 * incr); |
| |
| if (nbrkpt > Max_brk_byte_size) |
| nbrkpt = Beg_brk_val; /* start over */ |
| |
| } else { |
| /* |
| * shrink |
| */ |
| nbrkpt = cur_brk_val - incr; |
| } |
| |
| /**** |
| printf("cur_brk_val = %d, nbrkpt = %d, incr = %d, lc = %d\n", |
| cur_brk_val, nbrkpt, incr, lc); |
| ****/ |
| |
| /* |
| * Call brk(2) |
| */ |
| TEST(brk((char *)nbrkpt)); |
| |
| /* check return code */ |
| if (TEST_RETURN == -1) { |
| |
| aft_brk_val = (long)sbrk(0); |
| tst_resm(TFAIL|TTERRNO, |
| "brk(%ld) failed (size before %ld, after %ld)", |
| nbrkpt, cur_brk_val, aft_brk_val); |
| |
| } else { |
| |
| /*************************************************************** |
| * only perform functional verification if flag set (-f not given) |
| ***************************************************************/ |
| if (STD_FUNCTIONAL_TEST) { |
| |
| aft_brk_val = (long)sbrk(0); |
| if (aft_brk_val == nbrkpt) { |
| |
| tst_resm(TPASS, |
| "brk(%ld) returned %ld, new size verified by sbrk", |
| nbrkpt, TEST_RETURN); |
| } else { |
| tst_resm(TFAIL, |
| "brk(%ld) returned %ld, sbrk before %ld, after %ld", |
| nbrkpt, TEST_RETURN, |
| cur_brk_val, aft_brk_val); |
| } |
| } |
| } |
| |
| } /* End for TEST_LOOPING */ |
| |
| /*************************************************************** |
| * cleanup and exit |
| ***************************************************************/ |
| cleanup(); |
| |
| return 0; |
| } /* End main */ |
| |
| /*************************************************************** |
| * setup() - performs all ONE TIME setup for this test. |
| ***************************************************************/ |
| void setup() |
| { |
| unsigned long max_size; |
| int ncpus; |
| unsigned long ulim_sz; |
| unsigned long usr_mem_sz; |
| struct rlimit lim; |
| |
| /* capture signals */ |
| tst_sig(NOFORK, DEF_HANDLER, cleanup); |
| |
| /*if ((ulim_sz=ulimit(3,0)) == -1) |
| tst_brkm(TBROK|TERRNO, cleanup, "ulimit(3,0) failed"); */ |
| |
| if (getrlimit(RLIMIT_DATA, &lim) == -1) |
| tst_brkm(TBROK|TERRNO, cleanup, |
| "getrlimit(RLIMIT_DATA,%p) failed", &lim); |
| ulim_sz = lim.rlim_cur; |
| |
| #ifdef CRAY |
| if ((usr_mem_sz = sysconf(_SC_CRAY_USRMEM)) == -1) |
| tst_brkm(TBROK|TERRNO, cleanup, |
| "sysconf(_SC_CRAY_USRMEM) failed"); |
| |
| usr_mem_sz *= 8; /* convert to bytes */ |
| #else |
| /* |
| * On IRIX, which is a demand paged system, memory is managed |
| * different than on Crays systems. For now, pick some value. |
| */ |
| usr_mem_sz = 1024 * 1024 * sizeof(long); |
| #endif |
| |
| #ifdef __linux__ |
| #define _SC_NPROC_ONLN _SC_NPROCESSORS_ONLN |
| #endif |
| if ((ncpus = sysconf(_SC_NPROC_ONLN)) == -1) |
| tst_brkm(TBROK|TERRNO, cleanup, "sysconf(_SC_NPROC_ONLN) failed"); |
| |
| /* |
| * allow 2*ncpus copies to run. |
| * never attempt to take more than a * 1/4 of memory (by single test) |
| */ |
| |
| if (ulim_sz < usr_mem_sz) |
| max_size = ulim_sz; |
| else |
| max_size = usr_mem_sz; |
| |
| max_size = max_size / (2 * ncpus); |
| |
| if (max_size > (usr_mem_sz / 4)) |
| max_size = usr_mem_sz / 4; /* only fourth mem by single test */ |
| |
| Beg_brk_val = (long)sbrk(0); |
| |
| /* |
| * allow at least 4 times a big as current. |
| * This will override above code. |
| */ |
| if (max_size < Beg_brk_val * 4) /* running on small mem and/or high # cpus */ |
| max_size = Beg_brk_val * 4; |
| |
| Max_brk_byte_size = max_size; |
| |
| /* Pause if that option was specified */ |
| TEST_PAUSE; |
| |
| } /* End setup() */ |
| |
| #else |
| |
| int main() |
| { |
| tst_resm(TINFO, "test is not available on uClinux"); |
| return 0; |
| } |
| |
| #endif /* if !defined(UCLINUX) */ |
| |
| /*************************************************************** |
| * cleanup() - performs all ONE TIME cleanup for this test at |
| * completion or premature exit. |
| ***************************************************************/ |
| void cleanup() |
| { |
| /* |
| * print timing stats if that option was specified. |
| * print errno log if that option was specified. |
| */ |
| TEST_CLEANUP; |
| |
| /* exit with return code appropriate for results */ |
| tst_exit(); |
| |
| } /* End cleanup() */ |