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/*
*
* Copyright 2016 gRPC authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
#ifndef GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_RESOLVER_DNS_C_ARES_GRPC_ARES_EV_DRIVER_H
#define GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_RESOLVER_DNS_C_ARES_GRPC_ARES_EV_DRIVER_H
#include <grpc/support/port_platform.h>
#include <ares.h>
#include "src/core/lib/iomgr/pollset_set.h"
typedef struct grpc_ares_ev_driver grpc_ares_ev_driver;
/* Start \a ev_driver. It will keep working until all IO on its ares_channel is
done, or grpc_ares_ev_driver_destroy() is called. It may notify the callbacks
bound to its ares_channel when necessary. */
void grpc_ares_ev_driver_start(grpc_ares_ev_driver* ev_driver);
/* Returns the ares_channel owned by \a ev_driver. To bind a c-ares query to
\a ev_driver, use the ares_channel owned by \a ev_driver as the arg of the
query. */
ares_channel* grpc_ares_ev_driver_get_channel(grpc_ares_ev_driver* ev_driver);
/* Creates a new grpc_ares_ev_driver. Returns GRPC_ERROR_NONE if \a ev_driver is
created successfully. */
grpc_error* grpc_ares_ev_driver_create(grpc_ares_ev_driver** ev_driver,
grpc_pollset_set* pollset_set);
/* Destroys \a ev_driver asynchronously. Pending lookups made on \a ev_driver
will be cancelled and their on_done callbacks will be invoked with a status
of ARES_ECANCELLED. */
void grpc_ares_ev_driver_destroy(grpc_ares_ev_driver* ev_driver);
/* Shutdown all the grpc_fds used by \a ev_driver */
void grpc_ares_ev_driver_shutdown(grpc_ares_ev_driver* ev_driver);
#endif /* GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_RESOLVER_DNS_C_ARES_GRPC_ARES_EV_DRIVER_H \
*/
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