From: Felix Fietkau Date: Tue, 17 May 2016 10:24:04 +0000 (+0200) Subject: uloop: move kqueue code into a separate file X-Git-Url: https://git.librecmc.org/?a=commitdiff_plain;h=4b0aa9ccc22eff62e177b9777152e7937273b418;p=oweals%2Flibubox.git uloop: move kqueue code into a separate file Signed-off-by: Felix Fietkau --- diff --git a/uloop-kqueue.c b/uloop-kqueue.c new file mode 100644 index 0000000..0cb1c14 --- /dev/null +++ b/uloop-kqueue.c @@ -0,0 +1,148 @@ +/* + * uloop - event loop implementation + * + * Copyright (C) 2010-2016 Felix Fietkau + * + * Permission to use, copy, modify, and/or distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ +int uloop_init(void) +{ + struct timespec timeout = { 0, 0 }; + struct kevent ev = {}; + + if (poll_fd >= 0) + return 0; + + poll_fd = kqueue(); + if (poll_fd < 0) + return -1; + + EV_SET(&ev, SIGCHLD, EVFILT_SIGNAL, EV_ADD, 0, 0, 0); + kevent(poll_fd, &ev, 1, NULL, 0, &timeout); + + return 0; +} + + +static uint16_t get_flags(unsigned int flags, unsigned int mask) +{ + uint16_t kflags = 0; + + if (!(flags & mask)) + return EV_DELETE; + + kflags = EV_ADD; + if (flags & ULOOP_EDGE_TRIGGER) + kflags |= EV_CLEAR; + + return kflags; +} + +static struct kevent events[ULOOP_MAX_EVENTS]; + +static int register_kevent(struct uloop_fd *fd, unsigned int flags) +{ + struct timespec timeout = { 0, 0 }; + struct kevent ev[2]; + int nev = 0; + unsigned int fl = 0; + unsigned int changed; + uint16_t kflags; + + if (flags & ULOOP_EDGE_DEFER) + flags &= ~ULOOP_EDGE_TRIGGER; + + changed = flags ^ fd->flags; + if (changed & ULOOP_EDGE_TRIGGER) + changed |= flags; + + if (changed & ULOOP_READ) { + kflags = get_flags(flags, ULOOP_READ); + EV_SET(&ev[nev++], fd->fd, EVFILT_READ, kflags, 0, 0, fd); + } + + if (changed & ULOOP_WRITE) { + kflags = get_flags(flags, ULOOP_WRITE); + EV_SET(&ev[nev++], fd->fd, EVFILT_WRITE, kflags, 0, 0, fd); + } + + if (!flags) + fl |= EV_DELETE; + + fd->flags = flags; + if (kevent(poll_fd, ev, nev, NULL, fl, &timeout) == -1) + return -1; + + return 0; +} + +static int register_poll(struct uloop_fd *fd, unsigned int flags) +{ + if (flags & ULOOP_EDGE_TRIGGER) + flags |= ULOOP_EDGE_DEFER; + else + flags &= ~ULOOP_EDGE_DEFER; + + return register_kevent(fd, flags); +} + +static int __uloop_fd_delete(struct uloop_fd *fd) +{ + return register_poll(fd, 0); +} + +static int uloop_fetch_events(int timeout) +{ + struct timespec ts; + int nfds, n; + + if (timeout >= 0) { + ts.tv_sec = timeout / 1000; + ts.tv_nsec = (timeout % 1000) * 1000000; + } + + nfds = kevent(poll_fd, NULL, 0, events, ARRAY_SIZE(events), timeout >= 0 ? &ts : NULL); + for (n = 0; n < nfds; n++) { + struct uloop_fd_event *cur = &cur_fds[n]; + struct uloop_fd *u = events[n].udata; + unsigned int ev = 0; + + cur->fd = u; + if (!u) + continue; + + if (events[n].flags & EV_ERROR) { + u->error = true; + if (!(u->flags & ULOOP_ERROR_CB)) + uloop_fd_delete(u); + } + + if(events[n].filter == EVFILT_READ) + ev |= ULOOP_READ; + else if (events[n].filter == EVFILT_WRITE) + ev |= ULOOP_WRITE; + + if (events[n].flags & EV_EOF) + u->eof = true; + else if (!ev) + cur->fd = NULL; + + cur->events = ev; + if (u->flags & ULOOP_EDGE_DEFER) { + u->flags &= ~ULOOP_EDGE_DEFER; + u->flags |= ULOOP_EDGE_TRIGGER; + register_kevent(u, u->flags); + } + } + return nfds; +} diff --git a/uloop.c b/uloop.c index ea160a0..f2eb50a 100644 --- a/uloop.c +++ b/uloop.c @@ -1,7 +1,7 @@ /* * uloop - event loop implementation * - * Copyright (C) 2010-2013 Felix Fietkau + * Copyright (C) 2010-2016 Felix Fietkau * * Permission to use, copy, modify, and/or distribute this software for any * purpose with or without fee is hereby granted, provided that the above @@ -64,139 +64,7 @@ static struct uloop_fd_event cur_fds[ULOOP_MAX_EVENTS]; static int cur_fd, cur_nfds; #ifdef USE_KQUEUE - -int uloop_init(void) -{ - struct timespec timeout = { 0, 0 }; - struct kevent ev = {}; - - if (poll_fd >= 0) - return 0; - - poll_fd = kqueue(); - if (poll_fd < 0) - return -1; - - EV_SET(&ev, SIGCHLD, EVFILT_SIGNAL, EV_ADD, 0, 0, 0); - kevent(poll_fd, &ev, 1, NULL, 0, &timeout); - - return 0; -} - - -static uint16_t get_flags(unsigned int flags, unsigned int mask) -{ - uint16_t kflags = 0; - - if (!(flags & mask)) - return EV_DELETE; - - kflags = EV_ADD; - if (flags & ULOOP_EDGE_TRIGGER) - kflags |= EV_CLEAR; - - return kflags; -} - -static struct kevent events[ULOOP_MAX_EVENTS]; - -static int register_kevent(struct uloop_fd *fd, unsigned int flags) -{ - struct timespec timeout = { 0, 0 }; - struct kevent ev[2]; - int nev = 0; - unsigned int fl = 0; - unsigned int changed; - uint16_t kflags; - - if (flags & ULOOP_EDGE_DEFER) - flags &= ~ULOOP_EDGE_TRIGGER; - - changed = flags ^ fd->flags; - if (changed & ULOOP_EDGE_TRIGGER) - changed |= flags; - - if (changed & ULOOP_READ) { - kflags = get_flags(flags, ULOOP_READ); - EV_SET(&ev[nev++], fd->fd, EVFILT_READ, kflags, 0, 0, fd); - } - - if (changed & ULOOP_WRITE) { - kflags = get_flags(flags, ULOOP_WRITE); - EV_SET(&ev[nev++], fd->fd, EVFILT_WRITE, kflags, 0, 0, fd); - } - - if (!flags) - fl |= EV_DELETE; - - fd->flags = flags; - if (kevent(poll_fd, ev, nev, NULL, fl, &timeout) == -1) - return -1; - - return 0; -} - -static int register_poll(struct uloop_fd *fd, unsigned int flags) -{ - if (flags & ULOOP_EDGE_TRIGGER) - flags |= ULOOP_EDGE_DEFER; - else - flags &= ~ULOOP_EDGE_DEFER; - - return register_kevent(fd, flags); -} - -static int __uloop_fd_delete(struct uloop_fd *fd) -{ - return register_poll(fd, 0); -} - -static int uloop_fetch_events(int timeout) -{ - struct timespec ts; - int nfds, n; - - if (timeout >= 0) { - ts.tv_sec = timeout / 1000; - ts.tv_nsec = (timeout % 1000) * 1000000; - } - - nfds = kevent(poll_fd, NULL, 0, events, ARRAY_SIZE(events), timeout >= 0 ? &ts : NULL); - for (n = 0; n < nfds; n++) { - struct uloop_fd_event *cur = &cur_fds[n]; - struct uloop_fd *u = events[n].udata; - unsigned int ev = 0; - - cur->fd = u; - if (!u) - continue; - - if (events[n].flags & EV_ERROR) { - u->error = true; - if (!(u->flags & ULOOP_ERROR_CB)) - uloop_fd_delete(u); - } - - if(events[n].filter == EVFILT_READ) - ev |= ULOOP_READ; - else if (events[n].filter == EVFILT_WRITE) - ev |= ULOOP_WRITE; - - if (events[n].flags & EV_EOF) - u->eof = true; - else if (!ev) - cur->fd = NULL; - - cur->events = ev; - if (u->flags & ULOOP_EDGE_DEFER) { - u->flags &= ~ULOOP_EDGE_DEFER; - u->flags |= ULOOP_EDGE_TRIGGER; - register_kevent(u, u->flags); - } - } - return nfds; -} - +#include "uloop-kqueue.c" #endif #ifdef USE_EPOLL