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 #ifndef GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_INCOMING_METADATA_H
20 #define GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_INCOMING_METADATA_H
21 
22 #include <grpc/support/port_platform.h>
23 
24 #include "src/core/lib/transport/transport.h"
25 
26 typedef struct {
27   gpr_arena* arena;
28   grpc_metadata_batch batch;
29   size_t size;  // total size of metadata
30 } grpc_chttp2_incoming_metadata_buffer;
31 
32 /** assumes everything initially zeroed */
33 void grpc_chttp2_incoming_metadata_buffer_init(
34     grpc_chttp2_incoming_metadata_buffer* buffer, gpr_arena* arena);
35 void grpc_chttp2_incoming_metadata_buffer_destroy(
36     grpc_chttp2_incoming_metadata_buffer* buffer);
37 void grpc_chttp2_incoming_metadata_buffer_publish(
38     grpc_chttp2_incoming_metadata_buffer* buffer, grpc_metadata_batch* batch);
39 
40 grpc_error* grpc_chttp2_incoming_metadata_buffer_add(
41     grpc_chttp2_incoming_metadata_buffer* buffer,
42     grpc_mdelem elem) GRPC_MUST_USE_RESULT;
43 grpc_error* grpc_chttp2_incoming_metadata_buffer_replace_or_add(
44     grpc_chttp2_incoming_metadata_buffer* buffer,
45     grpc_mdelem elem) GRPC_MUST_USE_RESULT;
46 void grpc_chttp2_incoming_metadata_buffer_set_deadline(
47     grpc_chttp2_incoming_metadata_buffer* buffer, grpc_millis deadline);
48 
49 #endif /* GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_INCOMING_METADATA_H */
50