| /* |
| * |
| * Copyright 2016, Google Inc. |
| * 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 Google Inc. 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 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 <ares.h> |
| |
| #include "src/core/lib/iomgr/exec_ctx.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_exec_ctx *exec_ctx, |
| 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_exec_ctx *exec_ctx, |
| grpc_ares_ev_driver *ev_driver); |
| |
| #endif /* GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_RESOLVER_DNS_C_ARES_GRPC_ARES_EV_DRIVER_H \ |
| */ |