1/* 2* $Id: timer.c,v 1.6 2009/02/26 12:02:23 subrata_modak Exp $ 3* Disktest 4* Copyright (c) International Business Machines Corp., 2001 5* 6* 7* This program is free software; you can redistribute it and/or modify 8* it under the terms of the GNU General Public License as published by 9* the Free Software Foundation; either version 2 of the License, or 10* (at your option) any later version. 11* 12* This program is distributed in the hope that it will be useful, 13* but WITHOUT ANY WARRANTY; without even the implied warranty of 14* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15* GNU General Public License for more details. 16* 17* You should have received a copy of the GNU General Public License 18* along with this program; if not, write to the Free Software 19* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. 20* 21* Please send e-mail to yardleyb@us.ibm.com if you have 22* questions or comments. 23* 24* Project Website: TBD 25* 26* $Id: timer.c,v 1.6 2009/02/26 12:02:23 subrata_modak Exp $ 27* 28*/ 29#include <stdio.h> 30#ifdef WINDOWS 31#include <windows.h> 32#include <winioctl.h> 33#include <io.h> 34#include <process.h> 35#include <sys/stat.h> 36#include "getopt.h" 37#else 38#include <sys/types.h> 39#include <sys/time.h> 40#include <unistd.h> 41#endif 42#include <stdlib.h> 43#include <stdarg.h> 44#include <stdint.h> 45#include <signal.h> 46#include <time.h> 47#include <errno.h> 48#include <fcntl.h> 49#include <string.h> 50#include <ctype.h> 51 52#include "defs.h" 53#include "globals.h" 54#include "threading.h" 55#include "sfunc.h" 56#include "stats.h" 57#include "signals.h" 58 59/* 60 * The main purpose of this thread is track time during the test. Along with 61 * keeping track of read/write time. And check that each interval, that the 62 * IO threads are making progress. The timer thread is started before any IO 63 * threads and will complete either after all IO threads exit, the test fails, 64 * or if a timed run, the run time is exceeded. 65 */ 66#ifdef WINDOWS 67DWORD WINAPI ChildTimer(test_ll_t * test) 68#else 69void *ChildTimer(void *vtest) 70#endif 71{ 72#ifndef WINDOWS 73 test_ll_t *test = (test_ll_t *) vtest; 74#endif 75 time_t ioTimeoutCount = 0; 76 time_t total_time = 0; 77 OFF_T cur_total_io_count = 0; 78 OFF_T last_total_io_count = 0; 79 80 OFF_T tmp_io_count = 0; 81 time_t run_time = 0; 82 83 lvl_t msg_level = WARN; 84 85 child_args_t *args = test->args; 86 test_env_t *env = test->env; 87 88 extern int signal_action; 89 extern unsigned short glb_run; 90 91#ifdef _DEBUG 92 PDBG3(DBUG, args, "In timer %lu, %d\n", time(NULL), env->bContinue); 93#endif 94 do { 95 Sleep(1000); 96 run_time++; 97#ifdef _DEBUG 98 PDBG3(DBUG, args, "Continue timing %lu, %lu, %d\n", time(NULL), 99 run_time, env->bContinue); 100#endif 101 if (args->flags & CLD_FLG_W) { 102 if ((args->flags & CLD_FLG_LINEAR) 103 && !(args->flags & CLD_FLG_NTRLVD)) { 104 if (TST_OPER(args->test_state) == WRITER) { 105 env->hbeat_stats.wtime++; 106 } 107 } else { 108 env->hbeat_stats.wtime++; 109 } 110 } 111 if (args->flags & CLD_FLG_R) { 112 if ((args->flags & CLD_FLG_LINEAR) 113 && !(args->flags & CLD_FLG_NTRLVD)) { 114 if (TST_OPER(args->test_state) == READER) { 115 env->hbeat_stats.rtime++; 116 } 117 } else { 118 env->hbeat_stats.rtime++; 119 } 120 } 121 122 /* 123 * Check to see if we have made any IO progress in the last interval, 124 * if not incremment the ioTimeout timer, otherwise, clear it 125 */ 126 cur_total_io_count = env->global_stats.wcount 127 + env->cycle_stats.wcount 128 + env->hbeat_stats.wcount 129 + env->global_stats.rcount 130 + env->cycle_stats.rcount + env->hbeat_stats.rcount; 131 132 if (cur_total_io_count == 0) { 133 tmp_io_count = 1; 134 } else { 135 tmp_io_count = cur_total_io_count; 136 } 137 138 total_time = env->global_stats.rtime 139 + env->cycle_stats.rtime 140 + env->hbeat_stats.rtime 141 + env->global_stats.wtime 142 + env->cycle_stats.wtime + env->hbeat_stats.wtime; 143 144#ifdef _DEBUG 145 PDBG3(DBUG, args, "average number of seconds per IO: %0.8lf\n", 146 ((double)(total_time) / (double)(tmp_io_count))); 147#endif 148 149 if (cur_total_io_count == last_total_io_count) { /* no IOs completed in interval */ 150 if (0 == (++ioTimeoutCount % args->ioTimeout)) { /* no progress after modulo ioTimeout interval */ 151 if (args->flags & CLD_FLG_TMO_ERROR) { 152 args->test_state = 153 SET_STS_FAIL(args->test_state); 154 env->bContinue = FALSE; 155 msg_level = ERR; 156 } 157 pMsg(msg_level, args, 158 "Possible IO hang condition, IO timeout reached, %lu seconds\n", 159 args->ioTimeout); 160 } 161#ifdef _DEBUG 162 PDBG3(DBUG, args, "io timeout count: %lu\n", 163 ioTimeoutCount); 164#endif 165 } else { 166 ioTimeoutCount = 0; 167 last_total_io_count = cur_total_io_count; 168#ifdef _DEBUG 169 PDBG3(DBUG, args, "io timeout reset\n"); 170#endif 171 } 172 173 if (((args->hbeat > 0) && ((run_time % args->hbeat) == 0)) 174 || (signal_action & SIGNAL_STAT)) { 175 print_stats(args, env, HBEAT); 176 update_cyc_stats(env); 177 clear_stat_signal(); 178 } 179 180 if (glb_run == 0) { 181 break; 182 } /* global run flag cleared */ 183 if (signal_action & SIGNAL_STOP) { 184 break; 185 } 186 /* user request to stop */ 187 if (args->flags & CLD_FLG_TMD) { /* if timing */ 188 if (run_time >= args->run_time) { /* and run time exceeded */ 189 break; 190 } 191 } else { /* if not timing */ 192 if (env->kids <= 1) { /* and the timer is the only child */ 193 break; 194 } 195 } 196 } while (TRUE); 197#ifdef _DEBUG 198 PDBG3(DBUG, args, "Out of timer %lu, %lu, %d, %d\n", time(NULL), 199 run_time, env->bContinue, env->kids); 200#endif 201 202 if (args->flags & CLD_FLG_TMD) { /* timed test, timer exit needs to stop io threads */ 203#ifdef _DEBUG 204 PDBG3(DBUG, args, 205 "Setting bContinue to FALSE, timed test & timer exit\n"); 206#endif 207 env->bContinue = FALSE; 208 } 209 210 TEXIT((uintptr_t) GETLASTERROR()); 211} 212 213#ifdef _DEBUG 214#ifdef WINDOWS 215DWORD startTime; 216DWORD endTime; 217 218void setStartTime(void) 219{ 220 startTime = GetTickCount(); 221} 222 223void setEndTime(void) 224{ 225 endTime = GetTickCount(); 226} 227 228unsigned long getTimeDiff(void) 229{ 230 return ((endTime - startTime) * 1000); /* since we report in usecs, and windows is msec, multiply by 1000 */ 231} 232#else 233struct timeval tv_start; 234struct timeval tv_end; 235 236void setStartTime(void) 237{ 238 gettimeofday(&tv_start, NULL); 239} 240 241void setEndTime(void) 242{ 243 gettimeofday(&tv_end, NULL); 244} 245 246unsigned long getTimeDiff(void) 247{ 248 return (tv_end.tv_usec - tv_start.tv_usec); 249} 250 251#endif 252#endif 253