Date: Thu, 27 Feb 2014 16:03:54 +0900 (JST) From: Kohji Okuno <okuno.kohji@jp.panasonic.com> To: jmg@funkthat.com Cc: freebsd-current@freebsd.org, okuno.kohji@jp.panasonic.com Subject: Re: kqueue for usb_dev Message-ID: <20140227.160354.2283977188535912888.okuno.kohji@jp.panasonic.com> In-Reply-To: <20140227062118.GC47921@funkthat.com> References: <20140227.142615.924807465819500067.okuno.kohji@jp.panasonic.com> <20140227062118.GC47921@funkthat.com>
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[-- Attachment #1 --]
Hi John-Mark,
I tested the attached sample source with USB mouse.
Thanks,
Kohji Okuno
From: John-Mark Gurney <jmg@funkthat.com>
> Kohji Okuno wrote this message on Thu, Feb 27, 2014 at 14:26 +0900:
>> I tried add kqueue I/F to usb_dev.c. I attached my patch.
>> What do you think about my patch?
>
> Do you have test cases for these patches?
>
> --
> John-Mark Gurney Voice: +1 415 225 5579
>
> "All that I will do, has been done, All that I have, has not."
[-- Attachment #2 --]
#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <sys/types.h>
#include <sys/event.h>
#include <sys/select.h>
#include <sys/time.h>
#include <unistd.h>
#include <fcntl.h>
#include <errno.h>
#define DEV "/dev/ums0"
#if 0
int
main()
{
int i;
ssize_t ret;
uint8_t buf[128];
int fd = open(DEV, O_RDONLY);
fd_set readfds;
for (i = 0; i < 10; i++) {
FD_ZERO(&readfds);
FD_SET(fd, &readfds);
ret = select(fd+1, &readfds, NULL, NULL, NULL);
printf("select=%d\n", ret);
ret = read(fd, buf, sizeof(buf));
printf("%d:%02x %02x %02x\n", ret, buf[0], buf[1], buf[2]);
}
close(fd);
exit(0);
}
#else
int
main()
{
int i;
int err;
ssize_t ret;
uint8_t buf[128];
int fd = open(DEV, O_RDONLY);
int kqfd = kqueue();
struct kevent evlist[1];
EV_SET(&evlist[0], fd, EVFILT_READ, EV_ADD, 0, 0, 0);
err = kevent(kqfd, evlist, 1, 0, 0, 0);
if (err) {
perror("kevent");
close(fd);
close(kqfd);
exit(1);
}
for (i = 0; i < 10; i++) {
ret = kevent(kqfd, 0, 0, evlist, 1, 0);
printf("kev=%d\n", ret);
ret = read(fd, buf, sizeof(buf));
printf("%d:%02x %02x %02x\n", ret, buf[0], buf[1], buf[2]);
}
close(fd);
exit(0);
}
#endif
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