/* * Copyright (c) 2010-2011, Pieter Noordhuis <pcnoordhuis at gmail dot com> * * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are met: * * * Redistributions of source code must retain the above copyright notice, * this list of conditions and the following disclaimer. * * 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. * * Neither the name of Redis nor the names of its contributors may be used * to endorse or promote products derived from this software without * specific prior written permission. * * 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 OWNER 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. */ #ifndef __HIREDIS_LIBEVENT_H__ #define __HIREDIS_LIBEVENT_H__ #include <event.h> #include "../hiredis.h" #include "../async.h" typedef struct redisLibeventEvents { redisAsyncContext *context; struct event rev, wev; } redisLibeventEvents; static void redisLibeventReadEvent(int fd, short event, void *arg) { ((void)fd); ((void)event); redisLibeventEvents *e = (redisLibeventEvents*)arg; redisAsyncHandleRead(e->context); } static void redisLibeventWriteEvent(int fd, short event, void *arg) { ((void)fd); ((void)event); redisLibeventEvents *e = (redisLibeventEvents*)arg; redisAsyncHandleWrite(e->context); } static void redisLibeventAddRead(void *privdata) { redisLibeventEvents *e = (redisLibeventEvents*)privdata; event_add(&e->rev,NULL); } static void redisLibeventDelRead(void *privdata) { redisLibeventEvents *e = (redisLibeventEvents*)privdata; event_del(&e->rev); } static void redisLibeventAddWrite(void *privdata) { redisLibeventEvents *e = (redisLibeventEvents*)privdata; event_add(&e->wev,NULL); } static void redisLibeventDelWrite(void *privdata) { redisLibeventEvents *e = (redisLibeventEvents*)privdata; event_del(&e->wev); } static void redisLibeventCleanup(void *privdata) { redisLibeventEvents *e = (redisLibeventEvents*)privdata; event_del(&e->rev); event_del(&e->wev); free(e); } static int redisLibeventAttach(redisAsyncContext *ac, struct event_base *base) { redisContext *c = &(ac->c); redisLibeventEvents *e; /* Nothing should be attached when something is already attached */ if (ac->ev.data != NULL) return REDIS_ERR; /* Create container for context and r/w events */ e = (redisLibeventEvents*)malloc(sizeof(*e)); e->context = ac; /* Register functions to start/stop listening for events */ ac->ev.addRead = redisLibeventAddRead; ac->ev.delRead = redisLibeventDelRead; ac->ev.addWrite = redisLibeventAddWrite; ac->ev.delWrite = redisLibeventDelWrite; ac->ev.cleanup = redisLibeventCleanup; ac->ev.data = e; /* Initialize and install read/write events */ event_set(&e->rev,c->fd,EV_READ,redisLibeventReadEvent,e); event_set(&e->wev,c->fd,EV_WRITE,redisLibeventWriteEvent,e); event_base_set(base,&e->rev); event_base_set(base,&e->wev); return REDIS_OK; } #endif