1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3 * 4 * Copyright (c) 2011 NetApp, Inc. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY NETAPP, INC ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL NETAPP, INC OR CONTRIBUTORS BE LIABLE 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 * 28 * $FreeBSD$ 29 */ 30 31 /* 32 * Copyright 2018 Joyent, Inc. 33 */ 34 35 /* 36 * Test program for the micro event library. Set up a simple TCP echo 37 * service. 38 * 39 * cc mevent_test.c mevent.c -lpthread 40 */ 41 42 #include <sys/types.h> 43 #include <sys/stdint.h> 44 #ifdef __FreeBSD__ 45 #include <sys/sysctl.h> 46 #endif 47 #include <sys/socket.h> 48 #include <netinet/in.h> 49 #ifdef __FreeBSD__ 50 #include <machine/cpufunc.h> 51 #endif 52 53 #include <stdio.h> 54 #include <stdlib.h> 55 #include <pthread.h> 56 #include <unistd.h> 57 58 #include "mevent.h" 59 60 #define TEST_PORT 4321 61 62 static pthread_mutex_t accept_mutex = PTHREAD_MUTEX_INITIALIZER; 63 static pthread_cond_t accept_condvar = PTHREAD_COND_INITIALIZER; 64 65 static struct mevent *tevp; 66 67 68 #define MEVENT_ECHO 69 70 /* Number of timer events to capture */ 71 #define TEVSZ 4096 72 uint64_t tevbuf[TEVSZ]; 73 74 static void 75 timer_print(void) 76 { 77 uint64_t min, max, diff, sum; 78 #ifdef __FreeBSD__ 79 uint64_t tsc_freq; 80 size_t len; 81 #endif 82 int j; 83 84 min = UINT64_MAX; 85 max = 0; 86 sum = 0; 87 88 #ifdef __FreeBSD__ 89 len = sizeof(tsc_freq); 90 sysctlbyname("machdep.tsc_freq", &tsc_freq, &len, NULL, 0); 91 #endif 92 93 for (j = 1; j < TEVSZ; j++) { 94 #ifdef __FreeBSD__ 95 /* Convert a tsc diff into microseconds */ 96 diff = (tevbuf[j] - tevbuf[j-1]) * 1000000 / tsc_freq; 97 #else 98 diff = (tevbuf[j] - tevbuf[j-1]) / 1000; 99 #endif 100 sum += diff; 101 if (min > diff) 102 min = diff; 103 if (max < diff) 104 max = diff; 105 } 106 107 printf("timers done: usecs, min %ld, max %ld, mean %ld\n", min, max, 108 sum/(TEVSZ - 1)); 109 } 110 111 static void 112 timer_callback(int fd, enum ev_type type, void *param) 113 { 114 static int i; 115 116 if (i >= TEVSZ) 117 abort(); 118 119 #ifdef __FreeBSD__ 120 tevbuf[i++] = rdtsc(); 121 #else 122 tevbuf[i++] = gethrtime(); 123 #endif 124 125 if (i == TEVSZ) { 126 mevent_delete(tevp); 127 timer_print(); 128 } 129 } 130 131 132 #ifdef MEVENT_ECHO 133 struct esync { 134 pthread_mutex_t e_mt; 135 pthread_cond_t e_cond; 136 }; 137 138 static void 139 echoer_callback(int fd, enum ev_type type, void *param) 140 { 141 struct esync *sync = param; 142 143 pthread_mutex_lock(&sync->e_mt); 144 pthread_cond_signal(&sync->e_cond); 145 pthread_mutex_unlock(&sync->e_mt); 146 } 147 148 static void * 149 echoer(void *param) 150 { 151 struct esync sync; 152 struct mevent *mev; 153 char buf[128]; 154 int fd = (int)(uintptr_t) param; 155 int len; 156 157 pthread_mutex_init(&sync.e_mt, NULL); 158 pthread_cond_init(&sync.e_cond, NULL); 159 160 pthread_mutex_lock(&sync.e_mt); 161 162 mev = mevent_add(fd, EVF_READ, echoer_callback, &sync); 163 if (mev == NULL) { 164 printf("Could not allocate echoer event\n"); 165 exit(4); 166 } 167 168 while (!pthread_cond_wait(&sync.e_cond, &sync.e_mt)) { 169 len = read(fd, buf, sizeof(buf)); 170 if (len > 0) { 171 write(fd, buf, len); 172 write(0, buf, len); 173 } else { 174 break; 175 } 176 } 177 178 mevent_delete_close(mev); 179 180 pthread_mutex_unlock(&sync.e_mt); 181 pthread_mutex_destroy(&sync.e_mt); 182 pthread_cond_destroy(&sync.e_cond); 183 184 return (NULL); 185 } 186 187 #else 188 189 static void * 190 echoer(void *param) 191 { 192 char buf[128]; 193 int fd = (int)(uintptr_t) param; 194 int len; 195 196 while ((len = read(fd, buf, sizeof(buf))) > 0) { 197 write(1, buf, len); 198 } 199 200 return (NULL); 201 } 202 #endif /* MEVENT_ECHO */ 203 204 static void 205 acceptor_callback(int fd, enum ev_type type, void *param) 206 { 207 pthread_mutex_lock(&accept_mutex); 208 pthread_cond_signal(&accept_condvar); 209 pthread_mutex_unlock(&accept_mutex); 210 } 211 212 static void * 213 acceptor(void *param) 214 { 215 struct sockaddr_in sin; 216 pthread_t tid; 217 int news; 218 int s; 219 220 if ((s = socket(AF_INET, SOCK_STREAM, 0)) < 0) { 221 perror("cannot create socket"); 222 exit(4); 223 } 224 225 #ifdef __FreeBSD__ 226 sin.sin_len = sizeof(sin); 227 #endif 228 sin.sin_family = AF_INET; 229 sin.sin_addr.s_addr = htonl(INADDR_ANY); 230 sin.sin_port = htons(TEST_PORT); 231 232 if (bind(s, (struct sockaddr *)&sin, sizeof(sin)) < 0) { 233 perror("cannot bind socket"); 234 exit(4); 235 } 236 237 if (listen(s, 1) < 0) { 238 perror("cannot listen socket"); 239 exit(4); 240 } 241 242 (void) mevent_add(s, EVF_READ, acceptor_callback, NULL); 243 244 pthread_mutex_lock(&accept_mutex); 245 246 while (!pthread_cond_wait(&accept_condvar, &accept_mutex)) { 247 news = accept(s, NULL, NULL); 248 if (news < 0) { 249 perror("accept error"); 250 } else { 251 static int first = 1; 252 253 if (first) { 254 /* 255 * Start a timer 256 */ 257 first = 0; 258 tevp = mevent_add(1, EVF_TIMER, timer_callback, 259 NULL); 260 } 261 262 printf("incoming connection, spawning thread\n"); 263 pthread_create(&tid, NULL, echoer, 264 (void *)(uintptr_t)news); 265 } 266 } 267 268 return (NULL); 269 } 270 271 int 272 main() 273 { 274 pthread_t tid; 275 276 pthread_create(&tid, NULL, acceptor, NULL); 277 278 mevent_dispatch(); 279 return (0); 280 } 281