mirror of https://github.com/grpc/grpc.git
The C based gRPC (C++, Python, Ruby, Objective-C, PHP, C#)
https://grpc.io/
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72 lines
2.8 KiB
72 lines
2.8 KiB
8 years ago
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/*
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*
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* Copyright 2016, Google Inc.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following disclaimer
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* in the documentation and/or other materials provided with the
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* distribution.
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* * Neither the name of Google Inc. nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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*/
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/*
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* A collection of 'macros' that help navigating the grpc object hierarchy
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* Not intended to be robust for main-line code, often cuts across abstraction
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* boundaries.
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*/
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#include <stdio.h>
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#include "src/core/ext/client_channel/client_channel.h"
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#include "src/core/ext/transport/chttp2/transport/internal.h"
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#include "src/core/lib/channel/connected_channel.h"
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#include "src/core/lib/surface/call.h"
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void grpc_summon_debugger_macros() {}
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grpc_stream *grpc_transport_stream_from_call(grpc_call *call) {
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grpc_call_stack *cs = grpc_call_get_call_stack(call);
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for (;;) {
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grpc_call_element *el = grpc_call_stack_element(cs, cs->count - 1);
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if (el->filter == &grpc_client_channel_filter) {
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grpc_subchannel_call *scc = grpc_client_channel_get_subchannel_call(el);
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if (scc == NULL) {
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fprintf(stderr, "No subchannel-call");
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return NULL;
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}
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cs = grpc_subchannel_call_get_call_stack(scc);
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} else if (el->filter == &grpc_connected_filter) {
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return grpc_connected_channel_get_stream(el);
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} else {
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fprintf(stderr, "Unrecognized filter: %s", el->filter->name);
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return NULL;
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}
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}
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}
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grpc_chttp2_stream *grpc_chttp2_stream_from_call(grpc_call *call) {
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return (grpc_chttp2_stream *)grpc_transport_stream_from_call(call);
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}
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