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 fork 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 43static barrier_t *b; 44 45typedef struct { 46 int ts_once; 47 int *ts_pids; 48} tsd_t; 49 50int 51benchmark_init() 52{ 53 lm_tsdsize = sizeof (tsd_t); 54 (void) sprintf(lm_usage, "notes: measures fork()\n"); 55 56 return (0); 57} 58 59int 60benchmark_initrun() 61{ 62 b = barrier_create(lm_optP * lm_optT * (lm_optB + 1), 0); 63 64 return (0); 65} 66 67int 68benchmark_finirun() 69{ 70 (void) barrier_destroy(b); 71 72 return (0); 73} 74 75int 76benchmark_initbatch(void *tsd) 77{ 78 tsd_t *ts = (tsd_t *)tsd; 79 int errors = 0; 80 81 if (ts->ts_once++ == 0) { 82 ts->ts_pids = (int *)malloc(lm_optB * sizeof (pid_t)); 83 if (ts->ts_pids == NULL) { 84 errors++; 85 } 86 } 87 88 return (errors); 89} 90 91int 92benchmark(void *tsd, result_t *res) 93{ 94 tsd_t *ts = (tsd_t *)tsd; 95 int i; 96 97 for (i = 0; i < lm_optB; i++) { 98 ts->ts_pids[i] = fork(); 99 switch (ts->ts_pids[i]) { 100 case 0: 101 (void) barrier_queue(b, NULL); 102 exit(0); 103 break; 104 case -1: 105 res->re_errors++; 106 break; 107 default: 108 continue; 109 } 110 } 111 res->re_count = lm_optB; 112 113 (void) barrier_queue(b, NULL); 114 115 return (0); 116} 117 118int 119benchmark_finibatch(void *tsd) 120{ 121 tsd_t *ts = (tsd_t *)tsd; 122 int i; 123 124 for (i = 0; i < lm_optB; i++) { 125 if (ts->ts_pids[i] > 0) { 126 (void) waitpid(ts->ts_pids[i], NULL, 0); 127 } 128 } 129 130 return (0); 131} 132