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/*
* Copyright (c) 2009-2011, Salvatore Sanfilippo <antirez at gmail dot com>
*
* SPDX-FileCopyrightText: 2024 Hiredict Contributors
* SPDX-FileCopyrightText: 2024 Salvatore Sanfilippo <antirez at gmail dot com>
*
* SPDX-License-Identifier: BSD-3-Clause
* SPDX-License-Identifier: LGPL-3.0-or-later
*
*/
#ifndef __HIREDIS_LIBHV_H__
#define __HIREDIS_LIBHV_H__
#include <hv/hloop.h>
#include "../hiredis.h"
#include "../async.h"
typedef struct redisLibhvEvents {
hio_t *io;
htimer_t *timer;
} redisLibhvEvents;
static void redisLibhvHandleEvents(hio_t* io) {
redisAsyncContext* context = (redisAsyncContext*)hevent_userdata(io);
int events = hio_events(io);
int revents = hio_revents(io);
if (context && (events & HV_READ) && (revents & HV_READ)) {
redisAsyncHandleRead(context);
}
if (context && (events & HV_WRITE) && (revents & HV_WRITE)) {
redisAsyncHandleWrite(context);
}
}
static void redisLibhvAddRead(void *privdata) {
redisLibhvEvents* events = (redisLibhvEvents*)privdata;
hio_add(events->io, redisLibhvHandleEvents, HV_READ);
}
static void redisLibhvDelRead(void *privdata) {
redisLibhvEvents* events = (redisLibhvEvents*)privdata;
hio_del(events->io, HV_READ);
}
static void redisLibhvAddWrite(void *privdata) {
redisLibhvEvents* events = (redisLibhvEvents*)privdata;
hio_add(events->io, redisLibhvHandleEvents, HV_WRITE);
}
static void redisLibhvDelWrite(void *privdata) {
redisLibhvEvents* events = (redisLibhvEvents*)privdata;
hio_del(events->io, HV_WRITE);
}
static void redisLibhvCleanup(void *privdata) {
redisLibhvEvents* events = (redisLibhvEvents*)privdata;
if (events->timer)
htimer_del(events->timer);
hio_close(events->io);
hevent_set_userdata(events->io, NULL);
hi_free(events);
}
static void redisLibhvTimeout(htimer_t* timer) {
hio_t* io = (hio_t*)hevent_userdata(timer);
redisAsyncHandleTimeout((redisAsyncContext*)hevent_userdata(io));
}
static void redisLibhvSetTimeout(void *privdata, struct timeval tv) {
redisLibhvEvents* events;
uint32_t millis;
hloop_t* loop;
events = (redisLibhvEvents*)privdata;
millis = tv.tv_sec * 1000 + tv.tv_usec / 1000;
if (millis == 0) {
/* Libhv disallows zero'd timers so treat this as a delete or NO OP */
if (events->timer) {
htimer_del(events->timer);
events->timer = NULL;
}
} else if (events->timer == NULL) {
/* Add new timer */
loop = hevent_loop(events->io);
events->timer = htimer_add(loop, redisLibhvTimeout, millis, 1);
hevent_set_userdata(events->timer, events->io);
} else {
/* Update existing timer */
htimer_reset(events->timer, millis);
}
}
static int redisLibhvAttach(redisAsyncContext* ac, hloop_t* loop) {
redisContext *c = &(ac->c);
redisLibhvEvents *events;
hio_t* io = NULL;
if (ac->ev.data != NULL) {
return REDIS_ERR;
}
/* Create container struct to keep track of our io and any timer */
events = (redisLibhvEvents*)hi_malloc(sizeof(*events));
if (events == NULL) {
return REDIS_ERR;
}
io = hio_get(loop, c->fd);
if (io == NULL) {
hi_free(events);
return REDIS_ERR;
}
hevent_set_userdata(io, ac);
events->io = io;
events->timer = NULL;
ac->ev.addRead = redisLibhvAddRead;
ac->ev.delRead = redisLibhvDelRead;
ac->ev.addWrite = redisLibhvAddWrite;
ac->ev.delWrite = redisLibhvDelWrite;
ac->ev.cleanup = redisLibhvCleanup;
ac->ev.scheduleTimer = redisLibhvSetTimeout;
ac->ev.data = events;
return REDIS_OK;
}
#endif
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