1 /* 2 * 3 * Copyright 2018 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_CONTEXT_LIST_H 20 #define GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_CONTEXT_LIST_H 21 22 #include <grpc/support/port_platform.h> 23 24 #include "src/core/lib/iomgr/buffer_list.h" 25 26 #include "src/core/ext/transport/chttp2/transport/internal.h" 27 28 namespace grpc_core { 29 /** A list of RPC Contexts */ 30 class ContextList { 31 public: 32 /* Creates a new element with \a context as the value and appends it to the 33 * list. */ 34 static void Append(ContextList** head, grpc_chttp2_stream* s); 35 36 /* Executes a function \a fn with each context in the list and \a ts. It also 37 * frees up the entire list after this operation. It is intended as a callback 38 * and hence does not take a ref on \a error */ 39 static void Execute(void* arg, grpc_core::Timestamps* ts, 40 grpc_error_handle error); 41 42 private: 43 void* trace_context_ = nullptr; 44 ContextList* next_ = nullptr; 45 size_t byte_offset_ = 0; 46 }; 47 48 void grpc_http2_set_write_timestamps_callback( 49 void (*fn)(void*, grpc_core::Timestamps*, grpc_error_handle error)); 50 void grpc_http2_set_fn_get_copied_context(void* (*fn)(void*)); 51 } /* namespace grpc_core */ 52 53 #endif /* GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_CONTEXT_LIST_H */ 54