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ff_epoll: support edge-triggered mode. 

Convert epoll EPOLLET to kqueue EV_CLEAR.
This commit is contained in:
logwang 2017-12-05 17:51:02 +08:00
parent 7f92df961d
commit 794317ab37
1 changed files with 17 additions and 7 deletions
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24
lib/ff_epoll.c
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@ -27,7 +27,7 @@ ff_epoll_create(int size __attribute__((__unused__)))
return ff_kqueue();
}
int
int
ff_epoll_ctl(int epfd, int op, int fd, struct epoll_event *event)
{
struct kevent kev[3];
@ -38,23 +38,33 @@ ff_epoll_ctl(int epfd, int op, int fd, struct epoll_event *event)
}
if (op == EPOLL_CTL_ADD){
int flags = EV_ADD;
if (event->events & EPOLLET) {
flags |= EV_CLEAR;
}
EV_SET(&kev[0], fd, EVFILT_READ,
EV_ADD | (event->events & EPOLLIN ? 0 : EV_DISABLE), 0, 0, NULL);
flags | (event->events & EPOLLIN ? 0 : EV_DISABLE), 0, 0, NULL);
EV_SET(&kev[1], fd, EVFILT_WRITE,
EV_ADD | (event->events & EPOLLOUT ? 0 : EV_DISABLE), 0, 0, NULL);
flags | (event->events & EPOLLOUT ? 0 : EV_DISABLE), 0, 0, NULL);
EV_SET(&kev[2], fd, EVFILT_USER, EV_ADD,
event->events & EPOLLRDHUP ? 1 : 0, 0, NULL);
event->events & EPOLLRDHUP ? 1 : 0, 0, NULL);
} else if (op == EPOLL_CTL_DEL) {
EV_SET(&kev[0], fd, EVFILT_READ, EV_DELETE, 0, 0, NULL);
EV_SET(&kev[1], fd, EVFILT_WRITE, EV_DELETE, 0, 0, NULL);
EV_SET(&kev[2], fd, EVFILT_USER, EV_DELETE, 0, 0, NULL);
} else if (op == EPOLL_CTL_MOD) {
int flags = 0;
if (event->events & EPOLLET) {
flags |= EV_CLEAR;
}
EV_SET(&kev[0], fd, EVFILT_READ,
event->events & EPOLLIN ? EV_ENABLE : EV_DISABLE, 0, 0, NULL);
flags | (event->events & EPOLLIN ? EV_ENABLE : EV_DISABLE), 0, 0, NULL);
EV_SET(&kev[1], fd, EVFILT_WRITE,
event->events & EPOLLOUT ? EV_ENABLE : EV_DISABLE, 0, 0, NULL);
flags | (event->events & EPOLLOUT ? EV_ENABLE : EV_DISABLE), 0, 0, NULL);
EV_SET(&kev[2], fd, EVFILT_USER, 0,
NOTE_FFCOPY | (event->events & EPOLLRDHUP ? 1 : 0), 0, NULL);
NOTE_FFCOPY | (event->events & EPOLLRDHUP ? 1 : 0), 0, NULL);
} else {
errno = EINVAL;
return -1;