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+/*
+ * 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