diff -r 56cda23f48d4 -r bb7a1f5a8b48 src/server/daemon/event_linux.c --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/src/server/daemon/event_linux.c Tue Jan 01 13:32:04 2013 +0100 @@ -0,0 +1,159 @@ +/* + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER. + * + * Copyright 2011 Olaf Wintermann. 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 THE COPYRIGHT HOLDERS AND CONTRIBUTORS "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 THE COPYRIGHT HOLDER 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. + */ + +#include +#include +#include +#include + +#include "../util/systhr.h" +#include "../util/atomic.h" + + +#include "event.h" +#include "event_linux.h" + + +event_handler_t* evhandler_create(int numthreads) { + event_handler_t *ev = malloc(sizeof(event_handler_t)); + if(ev == NULL) { + return NULL; + } + + ev->ep = calloc(numthreads, sizeof(int)); + if(ev->ep == NULL) { + free(ev); + return NULL; + } + ev->nep = numthreads; + ev->lep = 0; + + /* create ports event threads */ + for(int i=0;iep[i] = epoll_create(64); + if(ev->ep[i] == 0) { + free(ev->ep); + free(ev); + return NULL; + } + + /* + * start a new handler thread + * the thread needs the event port and a pointer to the event handler + */ + ev_thr_conf_t *conf = malloc(sizeof(ev_thr_conf_t)); + if(conf == NULL) { + free(ev->ep); + free(ev); + return NULL; + } + conf->handler = ev; + conf->ep = ev->ep[i]; + + ev_thr_conf_t *thrconf = malloc(sizeof(ev_thr_conf_t)); + thrconf->handler = ev; + thrconf->ep= ev->ep[i]; + systhread_start(0, 0, (thrstartfunc)ev_handle_events, thrconf); + /* TODO: error handling */ + } + + return ev; +} + + +void ev_handle_events(ev_thr_conf_t *conf) { + event_handler_t *ev = conf->handler; + int ep = conf->ep; + + free(conf); + + //port_event_t events[16]; + struct epoll_event events[16]; + struct timespec timeout; + timeout.tv_nsec = 0; + timeout.tv_sec = 600; + + for(;;) { + /* wait for events */ + int ret = epoll_wait(ep, events, 16, 0); + if(ret == -1) { + /* TODO: check for error */ + perror("epoll_wait"); + continue; + } + + for(int i=0;ifn) { + if(!event->fn(ev, event)) { + // event fn returned 0 -> remove event from epoll + if(epoll_ctl(ep, EPOLL_CTL_DEL, event->object, NULL) != 0){ + perror("epoll_ctl"); + } + } + } + } + } +} + +/* returns a event handler port */ +int ev_get_port(event_handler_t *h) { + int nps = h->nep; + if(nps == 1) { + return h->ep[0]; + } + + int cp = h->lep % nps; + ws_atomic_inc32(&h->lep); + + return h->ep[cp]; +} + +int ev_pollin(event_handler_t *h, int fd, event_t *event) { + event->object = (intptr_t)fd; + struct epoll_event epev; + epev.events = EPOLLIN | EPOLLET; /* input event, edge triggered */ + epev.data.ptr = event; + return epoll_ctl(ev_get_port(h), EPOLL_CTL_ADD, fd, &epev); +} + +int ev_pollout(event_handler_t *h, int fd, event_t *event) { + event->object = (intptr_t)fd; + struct epoll_event epev; + epev.events = EPOLLOUT | EPOLLET; /* input event, edge triggered */ + epev.data.ptr = event; + return epoll_ctl(ev_get_port(h), EPOLL_CTL_ADD, fd, &epev); +} + +int evt_send(event_handler_t *h, event_t *event) { + event->object = 0; + // TODO: implement using threadpool + fprintf(stderr, "Warning: evt_send not implemented\n"); + return 0; +}