/* * Disktest * Copyright (c) International Business Machines Corp., 2001 * * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. * * Please send e-mail to yardleyb@us.ibm.com if you have * questions or comments. * * Project Website: TBD * * $Id: threading.c,v 1.7 2009/02/26 12:14:53 subrata_modak Exp $ * $Log: threading.c,v $ * Revision 1.7 2009/02/26 12:14:53 subrata_modak * Clean Trailing Tab: Signed-off-by: Michal Simek . * * Revision 1.6 2009/02/26 12:02:23 subrata_modak * Clear Trailing Whitespace. Signed-off-by: Michal Simek . * * Revision 1.5 2008/02/14 08:22:24 subrata_modak * Disktest application update to version 1.4.2, by, Brent Yardley * * Revision 1.11 2006/04/21 23:10:43 yardleyb * Major updates for v1_3_3 of disktest. View README for details. * * Revision 1.10 2004/11/20 04:43:42 yardleyb * Minor code fixes. Checking for alloc errors. * * Revision 1.9 2004/11/19 21:45:12 yardleyb * Fixed issue with code added for -F option. Cased disktest * to SEG FAULT when cleaning up threads. * * Revision 1.8 2004/11/02 20:47:13 yardleyb * Added -F functions. * lots of minor fixes. see README * * Revision 1.7 2002/04/24 01:45:31 yardleyb * Minor Fixes: * Read/write time could exceeds overall time * Heartbeat options sometimes only displayed once * Cleanup time for large number of threads was very long (windows) * If heartbeat specified, now checks for performance option also * No IO was performed when -S0:0 and -pr specified * * Revision 1.6 2002/03/30 01:32:14 yardleyb * Major Changes: * * Added Dumping routines for * data miscompares, * * Updated performance output * based on command line. Gave * one decimal in MB/s output. * * Rewrote -pL IO routine to show * correct stats. Now show pass count * when using -C. * * Minor Changes: * * Code cleanup to remove the plethera * if #ifdef for windows/unix functional * differences. * * Revision 1.5 2002/03/07 03:30:11 yardleyb * Return errno on thread * create failure * * Revision 1.4 2002/02/28 04:25:45 yardleyb * reworked threading code * made locking code a macro. * * Revision 1.3 2002/02/19 02:46:37 yardleyb * Added changes to compile for AIX. * Update getvsiz so it returns a -1 * if the ioctl fails and we handle * that fact correctly. Added check * to force vsiz to always be greater * then stop_lba. * * Revision 1.2 2002/02/04 20:35:38 yardleyb * Changed max. number of threads to 64k. * Check for max threads in parsing. * Fixed windows getopt to return correctly * when a bad option is given. * Update time output to be in the format: * YEAR/MONTH/DAY-HOUR:MIN:SEC * instead of epoch time. * * Revision 1.1 2001/12/04 18:51:06 yardleyb * Checkin of new source files and removal * of outdated source * */ #ifdef WINDOWS #include #else #include #include #include #include #endif #include "defs.h" #include "sfunc.h" #include "main.h" #include "childmain.h" #include "threading.h" /* * This routine will sit waiting for all threads to exit. In * unix, this is done through pthread_join. In Windows we * use a sleeping loop. */ void cleanUpTestChildren(test_ll_t * test) { thread_struct_t *pTmpThread = NULL, *pTmpThreadLast = NULL; while (test->env->pThreads) { pTmpThread = test->env->pThreads->next; pTmpThreadLast = test->env->pThreads; closeThread(pTmpThreadLast->hThread); test->env->pThreads = pTmpThread; FREE(pTmpThreadLast); test->env->kids--; } } /* * This function will create children for us based on the action specified * during the call. if we cannot create a child, we fail and exit with * errno as the exit status. */ void CreateTestChild(void *function, test_ll_t * test) { thread_struct_t *pNewThread; hThread_t hTmpThread; hTmpThread = spawnThread(function, test); if (ISTHREADVALID(hTmpThread)) { if ((pNewThread = (thread_struct_t *) ALLOC(sizeof(thread_struct_t))) == NULL) { pMsg(ERR, test->args, "%d : Could not allocate memory for child thread...\n", GETLASTERROR()); exit(GETLASTERROR()); } test->env->kids++; memset(pNewThread, 0, sizeof(thread_struct_t)); pNewThread->next = test->env->pThreads; test->env->pThreads = pNewThread; test->env->pThreads->hThread = hTmpThread; } else { pMsg(ERR, test->args, "%d : Could not create all child threads.\n", GETLASTERROR()); pMsg(INFO, test->args, "Total Number of Threads created was %u\n", test->env->kids); exit(GETLASTERROR()); } } void createChild(void *function, test_ll_t * test) { hThread_t hTmpThread; hTmpThread = spawnThread(function, test); if (ISTHREADVALID(hTmpThread)) { test->hThread = hTmpThread; } else { pMsg(ERR, test->args, "%d : Could not create child thread...\n", GETLASTERROR()); exit(GETLASTERROR()); } } void cleanUp(test_ll_t * test) { test_ll_t *pTmpTest = test; test_ll_t *pLastTest; while (pTmpTest != NULL) { pLastTest = pTmpTest; pTmpTest = pTmpTest->next; closeThread(pLastTest->hThread); FREE(pLastTest->env->action_list); FREE(pLastTest->args); FREE(pLastTest->env); FREE(pLastTest); } } hThread_t spawnThread(void *function, void *param) { hThread_t hTmpThread; #ifdef WINDOWS hTmpThread = CreateThread(NULL, 0, function, param, 0, NULL); #else if (pthread_create(&hTmpThread, NULL, function, param) != 0) { hTmpThread = 0; } #endif return hTmpThread; } void closeThread(hThread_t hThread) { #ifdef WINDOWS DWORD dwExitCode = 0; do { GetExitCodeThread(hThread, &dwExitCode); /* * Sleep(0) will force this thread to * relinquish the remainder of its time slice */ if (dwExitCode == STILL_ACTIVE) Sleep(0); } while (dwExitCode == STILL_ACTIVE); #else pthread_join(hThread, NULL); #endif }