3 * Copyright 2016 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.
20 * A collection of 'macros' that help navigating the grpc object hierarchy
21 * Not intended to be robust for main-line code, often cuts across abstraction
27 #include "src/core/ext/filters/client_channel/client_channel.h"
28 #include "src/core/ext/transport/chttp2/transport/internal.h"
29 #include "src/core/lib/channel/connected_channel.h"
30 #include "src/core/lib/surface/call.h"
32 void grpc_summon_debugger_macros() {}
34 grpc_stream* grpc_transport_stream_from_call(grpc_call* call) {
35 grpc_call_stack* cs = grpc_call_get_call_stack(call);
37 grpc_call_element* el = grpc_call_stack_element(cs, cs->count - 1);
38 if (el->filter == &grpc_client_channel_filter) {
39 grpc_subchannel_call* scc = grpc_client_channel_get_subchannel_call(el);
41 fprintf(stderr, "No subchannel-call");
45 cs = grpc_subchannel_call_get_call_stack(scc);
46 } else if (el->filter == &grpc_connected_filter) {
47 return grpc_connected_channel_get_stream(el);
49 fprintf(stderr, "Unrecognized filter: %s", el->filter->name);
56 grpc_chttp2_stream* grpc_chttp2_stream_from_call(grpc_call* call) {
57 return reinterpret_cast<grpc_chttp2_stream*>(
58 grpc_transport_stream_from_call(call));