Home | History | Annotate | Download | only in iomgr 
      1 /*
      2  *
      3  * Copyright 2015 gRPC authors.
      4  *
      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
      8  *
      9  *     http://www.apache.org/licenses/LICENSE-2.0
     10  *
     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.
     16  *
     17  */
     18 
     19 #include <grpc/support/port_platform.h>
     20 
     21 #include "src/core/lib/iomgr/socket_mutator.h"
     22 
     23 #include <grpc/impl/codegen/grpc_types.h>
     24 #include <grpc/support/sync.h>
     25 
     26 #include "src/core/lib/channel/channel_args.h"
     27 #include "src/core/lib/gpr/useful.h"
     28 
     29 void grpc_socket_mutator_init(grpc_socket_mutator* mutator,
     30                               const grpc_socket_mutator_vtable* vtable) {
     31   mutator->vtable = vtable;
     32   gpr_ref_init(&mutator->refcount, 1);
     33 }
     34 
     35 grpc_socket_mutator* grpc_socket_mutator_ref(grpc_socket_mutator* mutator) {
     36   gpr_ref(&mutator->refcount);
     37   return mutator;
     38 }
     39 
     40 bool grpc_socket_mutator_mutate_fd(grpc_socket_mutator* mutator, int fd) {
     41   return mutator->vtable->mutate_fd(fd, mutator);
     42 }
     43 
     44 int grpc_socket_mutator_compare(grpc_socket_mutator* a,
     45                                 grpc_socket_mutator* b) {
     46   int c = GPR_ICMP(a, b);
     47   if (c != 0) {
     48     grpc_socket_mutator* sma = a;
     49     grpc_socket_mutator* smb = b;
     50     c = GPR_ICMP(sma->vtable, smb->vtable);
     51     if (c == 0) {
     52       c = sma->vtable->compare(sma, smb);
     53     }
     54   }
     55   return c;
     56 }
     57 
     58 void grpc_socket_mutator_unref(grpc_socket_mutator* mutator) {
     59   if (gpr_unref(&mutator->refcount)) {
     60     mutator->vtable->destroy(mutator);
     61   }
     62 }
     63 
     64 static void* socket_mutator_arg_copy(void* p) {
     65   return grpc_socket_mutator_ref(static_cast<grpc_socket_mutator*>(p));
     66 }
     67 
     68 static void socket_mutator_arg_destroy(void* p) {
     69   grpc_socket_mutator_unref(static_cast<grpc_socket_mutator*>(p));
     70 }
     71 
     72 static int socket_mutator_cmp(void* a, void* b) {
     73   return grpc_socket_mutator_compare(static_cast<grpc_socket_mutator*>(a),
     74                                      static_cast<grpc_socket_mutator*>(b));
     75 }
     76 
     77 static const grpc_arg_pointer_vtable socket_mutator_arg_vtable = {
     78     socket_mutator_arg_copy, socket_mutator_arg_destroy, socket_mutator_cmp};
     79 
     80 grpc_arg grpc_socket_mutator_to_arg(grpc_socket_mutator* mutator) {
     81   return grpc_channel_arg_pointer_create((char*)GRPC_ARG_SOCKET_MUTATOR,
     82                                          mutator, &socket_mutator_arg_vtable);
     83 }
     84