1/* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms 5 * of the Common Development and Distribution License 6 * (the "License"). You may not use this file except 7 * in compliance with the License. 8 * 9 * You can obtain a copy of the license at 10 * src/OPENSOLARIS.LICENSE 11 * or http://www.opensolaris.org/os/licensing. 12 * See the License for the specific language governing 13 * permissions and limitations under the License. 14 * 15 * When distributing Covered Code, include this CDDL 16 * HEADER in each file and include the License file at 17 * usr/src/OPENSOLARIS.LICENSE. If applicable, 18 * add the following below this CDDL HEADER, with the 19 * fields enclosed by brackets "[]" replaced with your 20 * own identifying information: Portions Copyright [yyyy] 21 * [name of copyright owner] 22 * 23 * CDDL HEADER END 24 */ 25 26/* 27 * Copyright 2005 Sun Microsystems, Inc. All rights reserved. 28 * Use is subject to license terms. 29 */ 30 31/* 32 * benchmark exit 33 */ 34 35#include <sys/types.h> 36#include <sys/wait.h> 37#include <unistd.h> 38#include <stdlib.h> 39#include <stdio.h> 40 41#include "libmicro.h" 42 43typedef struct { 44 int ts_once; 45 int *ts_pids; 46} tsd_t; 47 48static int opte = 0; 49static barrier_t *b; 50 51int 52benchmark_init() 53{ 54 lm_tsdsize = sizeof (tsd_t); 55 (void) sprintf(lm_optstr, "e"); 56 57 (void) sprintf(lm_usage, 58 " [-e] (uses _exit() rather than exit())" 59 "notes: measures exit()\n"); 60 61 return (0); 62} 63 64/*ARGSUSED*/ 65int 66benchmark_optswitch(int opt, char *optarg) 67{ 68 switch (opt) { 69 case 'e': 70 opte = 1; 71 break; 72 default: 73 return (-1); 74 } 75 return (0); 76} 77 78int 79benchmark_initrun() 80{ 81 b = barrier_create(lm_optP * lm_optT * (lm_optB + 1), 0); 82 83 return (0); 84} 85 86int 87benchmark_finirun() 88{ 89 (void) barrier_destroy(b); 90 91 return (0); 92} 93 94int 95benchmark_initbatch(void *tsd) 96{ 97 tsd_t *ts = (tsd_t *)tsd; 98 int i; 99 int errors = 0; 100 101 if (ts->ts_once++ == 0) { 102 ts->ts_pids = (int *)malloc(lm_optB * sizeof (pid_t)); 103 if (ts->ts_pids == NULL) { 104 errors ++; 105 } 106 } 107 108 /* 109 * create processes to exit 110 */ 111 112 for (i = 0; i < lm_optB; i++) { 113 ts->ts_pids[i] = fork(); 114 switch (ts->ts_pids[i]) { 115 case 0: 116 (void) barrier_queue(b, NULL); 117 if (opte) 118 _exit(0); 119 exit(0); 120 break; 121 case -1: 122 errors ++; 123 break; 124 default: 125 continue; 126 } 127 } 128 129 return (errors); 130} 131 132/*ARGSUSED*/ 133int 134benchmark(void *tsd, result_t *res) 135{ 136 int i; 137 138 /* 139 * start them all exiting 140 */ 141 142 (void) barrier_queue(b, NULL); 143 144 /* 145 * wait for them all to exit 146 */ 147 148 for (i = 0; i < lm_optB; i++) { 149 switch (waitpid((pid_t)-1, NULL, 0)) { 150 case 0: 151 continue; 152 case -1: 153 res->re_errors++; 154 } 155 } 156 157 res->re_count = i; 158 159 return (0); 160} 161