3 * Copyright 2015 gRPC authors.
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at
9 * http://www.apache.org/licenses/LICENSE-2.0
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
19 #ifndef GRPC_CORE_LIB_IOMGR_SOCKET_MUTATOR_H
20 #define GRPC_CORE_LIB_IOMGR_SOCKET_MUTATOR_H
22 #include <grpc/support/port_platform.h>
24 #include <grpc/impl/codegen/grpc_types.h>
25 #include <grpc/support/sync.h>
29 /** How is an fd to be used? */
31 /** Used for client connection */
32 GRPC_FD_CLIENT_CONNECTION_USAGE,
33 /** Used for server listening */
34 GRPC_FD_SERVER_LISTENER_USAGE,
35 /** Used for server connection */
36 GRPC_FD_SERVER_CONNECTION_USAGE,
39 /** Information about an fd to mutate */
41 /** File descriptor to mutate */
43 /** How the fd will be used */
45 } grpc_mutate_socket_info;
47 /** The virtual table of grpc_socket_mutator */
48 struct grpc_socket_mutator_vtable {
49 /** Mutates the socket options of \a fd -- deprecated, prefer mutate_fd_2 */
50 bool (*mutate_fd)(int fd, grpc_socket_mutator* mutator);
51 /** Compare socket mutator \a a and \a b */
52 int (*compare)(grpc_socket_mutator* a, grpc_socket_mutator* b);
53 /** Destroys the socket mutator instance */
54 void (*destroy)(grpc_socket_mutator* mutator);
55 /** Mutates the socket options of the fd in \a info - if set takes preference
57 bool (*mutate_fd_2)(const grpc_mutate_socket_info* info,
58 grpc_socket_mutator* mutator);
61 /** The Socket Mutator interface allows changes on socket options */
62 struct grpc_socket_mutator {
63 const grpc_socket_mutator_vtable* vtable;
64 gpr_refcount refcount;
67 /** called by concrete implementations to initialize the base struct */
68 void grpc_socket_mutator_init(grpc_socket_mutator* mutator,
69 const grpc_socket_mutator_vtable* vtable);
71 /** Wrap \a mutator as a grpc_arg */
72 grpc_arg grpc_socket_mutator_to_arg(grpc_socket_mutator* mutator);
74 /** Perform the file descriptor mutation operation of \a mutator on \a fd */
75 bool grpc_socket_mutator_mutate_fd(grpc_socket_mutator* mutator, int fd,
78 /** Compare if \a a and \a b are the same mutator or have same settings */
79 int grpc_socket_mutator_compare(grpc_socket_mutator* a, grpc_socket_mutator* b);
81 grpc_socket_mutator* grpc_socket_mutator_ref(grpc_socket_mutator* mutator);
82 void grpc_socket_mutator_unref(grpc_socket_mutator* mutator);
84 #endif /* GRPC_CORE_LIB_IOMGR_SOCKET_MUTATOR_H */