xref: /illumos-gate/usr/src/cmd/bhyve/mevent_test.c (revision 32640292)
14c87aefeSPatrick Mooney /*-
2*32640292SAndy Fiddaman  * SPDX-License-Identifier: BSD-2-Clause
34c87aefeSPatrick Mooney  *
44c87aefeSPatrick Mooney  * Copyright (c) 2011 NetApp, Inc.
54c87aefeSPatrick Mooney  * All rights reserved.
64c87aefeSPatrick Mooney  *
74c87aefeSPatrick Mooney  * Redistribution and use in source and binary forms, with or without
84c87aefeSPatrick Mooney  * modification, are permitted provided that the following conditions
94c87aefeSPatrick Mooney  * are met:
104c87aefeSPatrick Mooney  * 1. Redistributions of source code must retain the above copyright
114c87aefeSPatrick Mooney  *    notice, this list of conditions and the following disclaimer.
124c87aefeSPatrick Mooney  * 2. Redistributions in binary form must reproduce the above copyright
134c87aefeSPatrick Mooney  *    notice, this list of conditions and the following disclaimer in the
144c87aefeSPatrick Mooney  *    documentation and/or other materials provided with the distribution.
154c87aefeSPatrick Mooney  *
164c87aefeSPatrick Mooney  * THIS SOFTWARE IS PROVIDED BY NETAPP, INC ``AS IS'' AND
174c87aefeSPatrick Mooney  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
184c87aefeSPatrick Mooney  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
194c87aefeSPatrick Mooney  * ARE DISCLAIMED.  IN NO EVENT SHALL NETAPP, INC OR CONTRIBUTORS BE LIABLE
204c87aefeSPatrick Mooney  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
214c87aefeSPatrick Mooney  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
224c87aefeSPatrick Mooney  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
234c87aefeSPatrick Mooney  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
244c87aefeSPatrick Mooney  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
254c87aefeSPatrick Mooney  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
264c87aefeSPatrick Mooney  * SUCH DAMAGE.
274c87aefeSPatrick Mooney  */
284c87aefeSPatrick Mooney 
294c87aefeSPatrick Mooney /*
304c87aefeSPatrick Mooney  * Copyright 2018 Joyent, Inc.
314c87aefeSPatrick Mooney  */
324c87aefeSPatrick Mooney 
334c87aefeSPatrick Mooney /*
344c87aefeSPatrick Mooney  * Test program for the micro event library. Set up a simple TCP echo
354c87aefeSPatrick Mooney  * service.
364c87aefeSPatrick Mooney  *
374c87aefeSPatrick Mooney  *  cc mevent_test.c mevent.c -lpthread
384c87aefeSPatrick Mooney  */
394c87aefeSPatrick Mooney 
404c87aefeSPatrick Mooney #include <sys/types.h>
414c87aefeSPatrick Mooney #include <sys/stdint.h>
424c87aefeSPatrick Mooney #ifdef __FreeBSD__
434c87aefeSPatrick Mooney #include <sys/sysctl.h>
444c87aefeSPatrick Mooney #endif
454c87aefeSPatrick Mooney #include <sys/socket.h>
464c87aefeSPatrick Mooney #include <netinet/in.h>
474c87aefeSPatrick Mooney #ifdef __FreeBSD__
484c87aefeSPatrick Mooney #include <machine/cpufunc.h>
494c87aefeSPatrick Mooney #endif
504c87aefeSPatrick Mooney 
514c87aefeSPatrick Mooney #include <stdio.h>
524c87aefeSPatrick Mooney #include <stdlib.h>
534c87aefeSPatrick Mooney #include <pthread.h>
544c87aefeSPatrick Mooney #include <unistd.h>
554c87aefeSPatrick Mooney 
564c87aefeSPatrick Mooney #include "mevent.h"
574c87aefeSPatrick Mooney 
584c87aefeSPatrick Mooney #define TEST_PORT	4321
594c87aefeSPatrick Mooney 
604c87aefeSPatrick Mooney static pthread_mutex_t accept_mutex = PTHREAD_MUTEX_INITIALIZER;
614c87aefeSPatrick Mooney static pthread_cond_t accept_condvar = PTHREAD_COND_INITIALIZER;
624c87aefeSPatrick Mooney 
634c87aefeSPatrick Mooney static struct mevent *tevp;
644c87aefeSPatrick Mooney 
654c87aefeSPatrick Mooney 
664c87aefeSPatrick Mooney #define MEVENT_ECHO
674c87aefeSPatrick Mooney 
684c87aefeSPatrick Mooney /* Number of timer events to capture */
694c87aefeSPatrick Mooney #define TEVSZ	4096
704c87aefeSPatrick Mooney uint64_t tevbuf[TEVSZ];
714c87aefeSPatrick Mooney 
724c87aefeSPatrick Mooney static void
timer_print(void)734c87aefeSPatrick Mooney timer_print(void)
744c87aefeSPatrick Mooney {
754c87aefeSPatrick Mooney 	uint64_t min, max, diff, sum;
764c87aefeSPatrick Mooney #ifdef __FreeBSD__
774c87aefeSPatrick Mooney 	uint64_t tsc_freq;
784c87aefeSPatrick Mooney 	size_t len;
794c87aefeSPatrick Mooney #endif
804c87aefeSPatrick Mooney 	int j;
814c87aefeSPatrick Mooney 
824c87aefeSPatrick Mooney 	min = UINT64_MAX;
834c87aefeSPatrick Mooney 	max = 0;
844c87aefeSPatrick Mooney 	sum = 0;
854c87aefeSPatrick Mooney 
864c87aefeSPatrick Mooney #ifdef __FreeBSD__
874c87aefeSPatrick Mooney 	len = sizeof(tsc_freq);
884c87aefeSPatrick Mooney 	sysctlbyname("machdep.tsc_freq", &tsc_freq, &len, NULL, 0);
894c87aefeSPatrick Mooney #endif
904c87aefeSPatrick Mooney 
914c87aefeSPatrick Mooney 	for (j = 1; j < TEVSZ; j++) {
924c87aefeSPatrick Mooney #ifdef __FreeBSD__
934c87aefeSPatrick Mooney 		/* Convert a tsc diff into microseconds */
944c87aefeSPatrick Mooney 		diff = (tevbuf[j] - tevbuf[j-1]) * 1000000 / tsc_freq;
954c87aefeSPatrick Mooney #else
964c87aefeSPatrick Mooney 		diff = (tevbuf[j] - tevbuf[j-1]) / 1000;
974c87aefeSPatrick Mooney #endif
984c87aefeSPatrick Mooney 		sum += diff;
994c87aefeSPatrick Mooney 		if (min > diff)
1004c87aefeSPatrick Mooney 			min = diff;
1014c87aefeSPatrick Mooney 		if (max < diff)
1024c87aefeSPatrick Mooney 			max = diff;
1034c87aefeSPatrick Mooney 	}
1044c87aefeSPatrick Mooney 
1054c87aefeSPatrick Mooney 	printf("timers done: usecs, min %ld, max %ld, mean %ld\n", min, max,
1064c87aefeSPatrick Mooney 	    sum/(TEVSZ - 1));
1074c87aefeSPatrick Mooney }
1084c87aefeSPatrick Mooney 
1094c87aefeSPatrick Mooney static void
timer_callback(int fd,enum ev_type type,void * param)1104c87aefeSPatrick Mooney timer_callback(int fd, enum ev_type type, void *param)
1114c87aefeSPatrick Mooney {
1124c87aefeSPatrick Mooney 	static int i;
1134c87aefeSPatrick Mooney 
1144c87aefeSPatrick Mooney 	if (i >= TEVSZ)
1154c87aefeSPatrick Mooney 		abort();
1164c87aefeSPatrick Mooney 
1174c87aefeSPatrick Mooney #ifdef __FreeBSD__
1184c87aefeSPatrick Mooney 	tevbuf[i++] = rdtsc();
1194c87aefeSPatrick Mooney #else
1204c87aefeSPatrick Mooney 	tevbuf[i++] = gethrtime();
1214c87aefeSPatrick Mooney #endif
1224c87aefeSPatrick Mooney 
1234c87aefeSPatrick Mooney 	if (i == TEVSZ) {
1244c87aefeSPatrick Mooney 		mevent_delete(tevp);
1254c87aefeSPatrick Mooney 		timer_print();
1264c87aefeSPatrick Mooney 	}
1274c87aefeSPatrick Mooney }
1284c87aefeSPatrick Mooney 
1294c87aefeSPatrick Mooney 
1304c87aefeSPatrick Mooney #ifdef MEVENT_ECHO
1314c87aefeSPatrick Mooney struct esync {
1324c87aefeSPatrick Mooney 	pthread_mutex_t	e_mt;
1336dc98349SAndy Fiddaman 	pthread_cond_t	e_cond;
1344c87aefeSPatrick Mooney };
1354c87aefeSPatrick Mooney 
1364c87aefeSPatrick Mooney static void
echoer_callback(int fd,enum ev_type type,void * param)1374c87aefeSPatrick Mooney echoer_callback(int fd, enum ev_type type, void *param)
1384c87aefeSPatrick Mooney {
1394c87aefeSPatrick Mooney 	struct esync *sync = param;
1404c87aefeSPatrick Mooney 
1414c87aefeSPatrick Mooney 	pthread_mutex_lock(&sync->e_mt);
1424c87aefeSPatrick Mooney 	pthread_cond_signal(&sync->e_cond);
1434c87aefeSPatrick Mooney 	pthread_mutex_unlock(&sync->e_mt);
1444c87aefeSPatrick Mooney }
1454c87aefeSPatrick Mooney 
1464c87aefeSPatrick Mooney static void *
echoer(void * param)1474c87aefeSPatrick Mooney echoer(void *param)
1484c87aefeSPatrick Mooney {
1494c87aefeSPatrick Mooney 	struct esync sync;
1504c87aefeSPatrick Mooney 	struct mevent *mev;
1514c87aefeSPatrick Mooney 	char buf[128];
1524c87aefeSPatrick Mooney 	int fd = (int)(uintptr_t) param;
1534c87aefeSPatrick Mooney 	int len;
1544c87aefeSPatrick Mooney 
1554c87aefeSPatrick Mooney 	pthread_mutex_init(&sync.e_mt, NULL);
1564c87aefeSPatrick Mooney 	pthread_cond_init(&sync.e_cond, NULL);
1574c87aefeSPatrick Mooney 
1584c87aefeSPatrick Mooney 	pthread_mutex_lock(&sync.e_mt);
1594c87aefeSPatrick Mooney 
1604c87aefeSPatrick Mooney 	mev = mevent_add(fd, EVF_READ, echoer_callback, &sync);
1614c87aefeSPatrick Mooney 	if (mev == NULL) {
1624c87aefeSPatrick Mooney 		printf("Could not allocate echoer event\n");
1634c87aefeSPatrick Mooney 		exit(4);
1644c87aefeSPatrick Mooney 	}
1654c87aefeSPatrick Mooney 
1664c87aefeSPatrick Mooney 	while (!pthread_cond_wait(&sync.e_cond, &sync.e_mt)) {
1674c87aefeSPatrick Mooney 		len = read(fd, buf, sizeof(buf));
1684c87aefeSPatrick Mooney 		if (len > 0) {
1694c87aefeSPatrick Mooney 			write(fd, buf, len);
1704c87aefeSPatrick Mooney 			write(0, buf, len);
1714c87aefeSPatrick Mooney 		} else {
1724c87aefeSPatrick Mooney 			break;
1734c87aefeSPatrick Mooney 		}
1744c87aefeSPatrick Mooney 	}
1754c87aefeSPatrick Mooney 
1764c87aefeSPatrick Mooney 	mevent_delete_close(mev);
1774c87aefeSPatrick Mooney 
1784c87aefeSPatrick Mooney 	pthread_mutex_unlock(&sync.e_mt);
1794c87aefeSPatrick Mooney 	pthread_mutex_destroy(&sync.e_mt);
1804c87aefeSPatrick Mooney 	pthread_cond_destroy(&sync.e_cond);
1814c87aefeSPatrick Mooney 
1824c87aefeSPatrick Mooney 	return (NULL);
1834c87aefeSPatrick Mooney }
1844c87aefeSPatrick Mooney 
1854c87aefeSPatrick Mooney #else
1864c87aefeSPatrick Mooney 
1874c87aefeSPatrick Mooney static void *
echoer(void * param)1884c87aefeSPatrick Mooney echoer(void *param)
1894c87aefeSPatrick Mooney {
1904c87aefeSPatrick Mooney 	char buf[128];
1914c87aefeSPatrick Mooney 	int fd = (int)(uintptr_t) param;
1924c87aefeSPatrick Mooney 	int len;
1934c87aefeSPatrick Mooney 
1944c87aefeSPatrick Mooney 	while ((len = read(fd, buf, sizeof(buf))) > 0) {
1954c87aefeSPatrick Mooney 		write(1, buf, len);
1964c87aefeSPatrick Mooney 	}
1974c87aefeSPatrick Mooney 
1984c87aefeSPatrick Mooney 	return (NULL);
1994c87aefeSPatrick Mooney }
2004c87aefeSPatrick Mooney #endif /* MEVENT_ECHO */
2014c87aefeSPatrick Mooney 
2024c87aefeSPatrick Mooney static void
acceptor_callback(int fd,enum ev_type type,void * param)2034c87aefeSPatrick Mooney acceptor_callback(int fd, enum ev_type type, void *param)
2044c87aefeSPatrick Mooney {
2054c87aefeSPatrick Mooney 	pthread_mutex_lock(&accept_mutex);
2064c87aefeSPatrick Mooney 	pthread_cond_signal(&accept_condvar);
2074c87aefeSPatrick Mooney 	pthread_mutex_unlock(&accept_mutex);
2084c87aefeSPatrick Mooney }
2094c87aefeSPatrick Mooney 
2104c87aefeSPatrick Mooney static void *
acceptor(void * param)2114c87aefeSPatrick Mooney acceptor(void *param)
2124c87aefeSPatrick Mooney {
2134c87aefeSPatrick Mooney 	struct sockaddr_in sin;
2144c87aefeSPatrick Mooney 	pthread_t tid;
2154c87aefeSPatrick Mooney 	int news;
2164c87aefeSPatrick Mooney 	int s;
2174c87aefeSPatrick Mooney 
2184c87aefeSPatrick Mooney 	if ((s = socket(AF_INET, SOCK_STREAM, 0)) < 0) {
2194c87aefeSPatrick Mooney 		perror("cannot create socket");
2204c87aefeSPatrick Mooney 		exit(4);
2214c87aefeSPatrick Mooney 	}
2224c87aefeSPatrick Mooney 
2234c87aefeSPatrick Mooney #ifdef __FreeBSD__
2244c87aefeSPatrick Mooney 	sin.sin_len = sizeof(sin);
2254c87aefeSPatrick Mooney #endif
2264c87aefeSPatrick Mooney 	sin.sin_family = AF_INET;
2274c87aefeSPatrick Mooney 	sin.sin_addr.s_addr = htonl(INADDR_ANY);
2284c87aefeSPatrick Mooney 	sin.sin_port = htons(TEST_PORT);
2294c87aefeSPatrick Mooney 
2304c87aefeSPatrick Mooney 	if (bind(s, (struct sockaddr *)&sin, sizeof(sin)) < 0) {
2314c87aefeSPatrick Mooney 		perror("cannot bind socket");
2324c87aefeSPatrick Mooney 		exit(4);
2334c87aefeSPatrick Mooney 	}
2344c87aefeSPatrick Mooney 
2354c87aefeSPatrick Mooney 	if (listen(s, 1) < 0) {
2364c87aefeSPatrick Mooney 		perror("cannot listen socket");
2374c87aefeSPatrick Mooney 		exit(4);
2384c87aefeSPatrick Mooney 	}
2394c87aefeSPatrick Mooney 
2404c87aefeSPatrick Mooney 	(void) mevent_add(s, EVF_READ, acceptor_callback, NULL);
2414c87aefeSPatrick Mooney 
2424c87aefeSPatrick Mooney 	pthread_mutex_lock(&accept_mutex);
2434c87aefeSPatrick Mooney 
2444c87aefeSPatrick Mooney 	while (!pthread_cond_wait(&accept_condvar, &accept_mutex)) {
2454c87aefeSPatrick Mooney 		news = accept(s, NULL, NULL);
2464c87aefeSPatrick Mooney 		if (news < 0) {
2474c87aefeSPatrick Mooney 			perror("accept error");
2484c87aefeSPatrick Mooney 		} else {
2494c87aefeSPatrick Mooney 			static int first = 1;
2504c87aefeSPatrick Mooney 
2514c87aefeSPatrick Mooney 			if (first) {
2524c87aefeSPatrick Mooney 				/*
2534c87aefeSPatrick Mooney 				 * Start a timer
2544c87aefeSPatrick Mooney 				 */
2554c87aefeSPatrick Mooney 				first = 0;
2564c87aefeSPatrick Mooney 				tevp = mevent_add(1, EVF_TIMER, timer_callback,
2574c87aefeSPatrick Mooney 						  NULL);
2584c87aefeSPatrick Mooney 			}
2594c87aefeSPatrick Mooney 
2604c87aefeSPatrick Mooney 			printf("incoming connection, spawning thread\n");
2614c87aefeSPatrick Mooney 			pthread_create(&tid, NULL, echoer,
2624c87aefeSPatrick Mooney 				       (void *)(uintptr_t)news);
2634c87aefeSPatrick Mooney 		}
2644c87aefeSPatrick Mooney 	}
2654c87aefeSPatrick Mooney 
2664c87aefeSPatrick Mooney 	return (NULL);
2674c87aefeSPatrick Mooney }
2684c87aefeSPatrick Mooney 
2694c87aefeSPatrick Mooney int
main()2704c87aefeSPatrick Mooney main()
2714c87aefeSPatrick Mooney {
2724c87aefeSPatrick Mooney 	pthread_t tid;
2734c87aefeSPatrick Mooney 
2744c87aefeSPatrick Mooney 	pthread_create(&tid, NULL, acceptor, NULL);
2754c87aefeSPatrick Mooney 
2764c87aefeSPatrick Mooney 	mevent_dispatch();
2774c87aefeSPatrick Mooney 	return (0);
2784c87aefeSPatrick Mooney }
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