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#include <sys/types.h>
#include <ev.h>
#include <hiredis.h>
#include <async.h>
typedef struct redisLibevEvents {
redisAsyncContext *context;
struct ev_loop *loop;
int reading, writing;
ev_io rev, wev;
} redisLibevEvents;
void redisLibevReadEvent(struct ev_loop *loop, ev_io *watcher, int revents) {
((void)loop); ((void)revents);
redisLibevEvents *e = watcher->data;
redisAsyncHandleRead(e->context);
}
void redisLibevWriteEvent(struct ev_loop *loop, ev_io *watcher, int revents) {
((void)loop); ((void)revents);
redisLibevEvents *e = watcher->data;
redisAsyncHandleWrite(e->context);
}
void redisLibevAddRead(void *privdata) {
redisLibevEvents *e = privdata;
if (!e->reading) {
e->reading = 1;
ev_io_start(e->loop,&e->rev);
}
}
void redisLibevDelRead(void *privdata) {
redisLibevEvents *e = privdata;
if (e->reading) {
e->reading = 0;
ev_io_stop(e->loop,&e->rev);
}
}
void redisLibevAddWrite(void *privdata) {
redisLibevEvents *e = privdata;
if (!e->writing) {
e->writing = 1;
ev_io_start(e->loop,&e->wev);
}
}
void redisLibevDelWrite(void *privdata) {
redisLibevEvents *e = privdata;
if (e->writing) {
e->writing = 0;
ev_io_stop(e->loop,&e->wev);
}
}
void redisLibevCleanup(void *privdata) {
redisLibevEvents *e = privdata;
redisLibevDelRead(privdata);
redisLibevDelWrite(privdata);
free(e);
}
int redisLibevAttach(redisAsyncContext *ac, struct ev_loop *loop) {
redisContext *c = &(ac->c);
redisLibevEvents *e;
/* Nothing should be attached when something is already attached */
if (ac->data != NULL)
return REDIS_ERR;
/* Create container for context and r/w events */
e = malloc(sizeof(*e));
e->context = ac;
e->loop = loop;
e->reading = e->writing = 0;
e->rev.data = e;
e->wev.data = e;
/* Register functions to start/stop listening for events */
ac->evAddRead = redisLibevAddRead;
ac->evDelRead = redisLibevDelRead;
ac->evAddWrite = redisLibevAddWrite;
ac->evDelWrite = redisLibevDelWrite;
ac->evCleanup = redisLibevCleanup;
ac->data = e;
/* Initialize read/write events */
ev_io_init(&e->rev,redisLibevReadEvent,c->fd,EV_READ);
ev_io_init(&e->wev,redisLibevWriteEvent,c->fd,EV_WRITE);
return REDIS_OK;
}
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