freebsd-dev/usr.sbin/bhyve/mevent_test.c
Pedro F. Giffuni 1de7b4b805 various: general adoption of SPDX licensing ID tags.
Mainly focus on files that use BSD 2-Clause license, however the tool I
was using misidentified many licenses so this was mostly a manual - error
prone - task.

The Software Package Data Exchange (SPDX) group provides a specification
to make it easier for automated tools to detect and summarize well known
opensource licenses. We are gradually adopting the specification, noting
that the tags are considered only advisory and do not, in any way,
superceed or replace the license texts.

No functional change intended.
2017-11-27 15:37:16 +00:00

259 lines
5.5 KiB
C

/*-
* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
*
* Copyright (c) 2011 NetApp, Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY NETAPP, INC ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL NETAPP, INC OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $FreeBSD$
*/
/*
* Test program for the micro event library. Set up a simple TCP echo
* service.
*
* cc mevent_test.c mevent.c -lpthread
*/
#include <sys/types.h>
#include <sys/stdint.h>
#include <sys/sysctl.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <machine/cpufunc.h>
#include <stdio.h>
#include <stdlib.h>
#include <pthread.h>
#include <unistd.h>
#include "mevent.h"
#define TEST_PORT 4321
static pthread_mutex_t accept_mutex = PTHREAD_MUTEX_INITIALIZER;
static pthread_cond_t accept_condvar = PTHREAD_COND_INITIALIZER;
static struct mevent *tevp;
char *vmname = "test vm";
#define MEVENT_ECHO
/* Number of timer events to capture */
#define TEVSZ 4096
uint64_t tevbuf[TEVSZ];
static void
timer_print(void)
{
uint64_t min, max, diff, sum, tsc_freq;
size_t len;
int j;
min = UINT64_MAX;
max = 0;
sum = 0;
len = sizeof(tsc_freq);
sysctlbyname("machdep.tsc_freq", &tsc_freq, &len, NULL, 0);
for (j = 1; j < TEVSZ; j++) {
/* Convert a tsc diff into microseconds */
diff = (tevbuf[j] - tevbuf[j-1]) * 1000000 / tsc_freq;
sum += diff;
if (min > diff)
min = diff;
if (max < diff)
max = diff;
}
printf("timers done: usecs, min %ld, max %ld, mean %ld\n", min, max,
sum/(TEVSZ - 1));
}
static void
timer_callback(int fd, enum ev_type type, void *param)
{
static int i;
if (i >= TEVSZ)
abort();
tevbuf[i++] = rdtsc();
if (i == TEVSZ) {
mevent_delete(tevp);
timer_print();
}
}
#ifdef MEVENT_ECHO
struct esync {
pthread_mutex_t e_mt;
pthread_cond_t e_cond;
};
static void
echoer_callback(int fd, enum ev_type type, void *param)
{
struct esync *sync = param;
pthread_mutex_lock(&sync->e_mt);
pthread_cond_signal(&sync->e_cond);
pthread_mutex_unlock(&sync->e_mt);
}
static void *
echoer(void *param)
{
struct esync sync;
struct mevent *mev;
char buf[128];
int fd = (int)(uintptr_t) param;
int len;
pthread_mutex_init(&sync.e_mt, NULL);
pthread_cond_init(&sync.e_cond, NULL);
pthread_mutex_lock(&sync.e_mt);
mev = mevent_add(fd, EVF_READ, echoer_callback, &sync);
if (mev == NULL) {
printf("Could not allocate echoer event\n");
exit(1);
}
while (!pthread_cond_wait(&sync.e_cond, &sync.e_mt)) {
len = read(fd, buf, sizeof(buf));
if (len > 0) {
write(fd, buf, len);
write(0, buf, len);
} else {
break;
}
}
mevent_delete_close(mev);
pthread_mutex_unlock(&sync.e_mt);
pthread_mutex_destroy(&sync.e_mt);
pthread_cond_destroy(&sync.e_cond);
return (NULL);
}
#else
static void *
echoer(void *param)
{
char buf[128];
int fd = (int)(uintptr_t) param;
int len;
while ((len = read(fd, buf, sizeof(buf))) > 0) {
write(1, buf, len);
}
return (NULL);
}
#endif /* MEVENT_ECHO */
static void
acceptor_callback(int fd, enum ev_type type, void *param)
{
pthread_mutex_lock(&accept_mutex);
pthread_cond_signal(&accept_condvar);
pthread_mutex_unlock(&accept_mutex);
}
static void *
acceptor(void *param)
{
struct sockaddr_in sin;
pthread_t tid;
int news;
int s;
static int first;
if ((s = socket(AF_INET, SOCK_STREAM, 0)) < 0) {
perror("socket");
exit(1);
}
sin.sin_len = sizeof(sin);
sin.sin_family = AF_INET;
sin.sin_addr.s_addr = htonl(INADDR_ANY);
sin.sin_port = htons(TEST_PORT);
if (bind(s, (struct sockaddr *)&sin, sizeof(sin)) < 0) {
perror("bind");
exit(1);
}
if (listen(s, 1) < 0) {
perror("listen");
exit(1);
}
(void) mevent_add(s, EVF_READ, acceptor_callback, NULL);
pthread_mutex_lock(&accept_mutex);
while (!pthread_cond_wait(&accept_condvar, &accept_mutex)) {
news = accept(s, NULL, NULL);
if (news < 0) {
perror("accept error");
} else {
static int first = 1;
if (first) {
/*
* Start a timer
*/
first = 0;
tevp = mevent_add(1, EVF_TIMER, timer_callback,
NULL);
}
printf("incoming connection, spawning thread\n");
pthread_create(&tid, NULL, echoer,
(void *)(uintptr_t)news);
}
}
return (NULL);
}
main()
{
pthread_t tid;
pthread_create(&tid, NULL, acceptor, NULL);
mevent_dispatch();
}