| /* |
| * |
| * Copyright 2015 gRPC authors. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| * |
| */ |
| |
| #ifndef GRPC_CORE_LIB_TRANSPORT_TRANSPORT_IMPL_H |
| #define GRPC_CORE_LIB_TRANSPORT_TRANSPORT_IMPL_H |
| |
| #include <grpc/support/port_platform.h> |
| |
| #include <stddef.h> |
| |
| #include "absl/strings/string_view.h" |
| |
| #include "src/core/lib/iomgr/closure.h" |
| #include "src/core/lib/iomgr/endpoint.h" |
| #include "src/core/lib/iomgr/iomgr_fwd.h" |
| #include "src/core/lib/iomgr/pollset.h" |
| #include "src/core/lib/promise/arena_promise.h" |
| #include "src/core/lib/resource_quota/arena.h" |
| #include "src/core/lib/transport/transport.h" |
| #include "src/core/lib/transport/transport_fwd.h" |
| |
| typedef struct grpc_transport_vtable { |
| /* Memory required for a single stream element - this is allocated by upper |
| layers and initialized by the transport */ |
| size_t sizeof_stream; /* = sizeof(transport stream) */ |
| |
| /* name of this transport implementation */ |
| const char* name; |
| |
| /* implementation of grpc_transport_init_stream */ |
| int (*init_stream)(grpc_transport* self, grpc_stream* stream, |
| grpc_stream_refcount* refcount, const void* server_data, |
| grpc_core::Arena* arena); |
| |
| /* Create a promise to execute one client call. |
| If this is non-null, it may be used in preference to |
| perform_stream_op. |
| If this is used in preference to perform_stream_op, the |
| following can be omitted also: |
| - calling init_stream, destroy_stream, set_pollset, set_pollset_set |
| - allocation of memory for call data (sizeof_stream may be ignored) |
| There is an on-going migration to move all filters to providing this, and |
| then to drop perform_stream_op. */ |
| grpc_core::ArenaPromise<grpc_core::ServerMetadataHandle> (*make_call_promise)( |
| grpc_transport* self, grpc_core::ClientMetadataHandle initial_metadata); |
| |
| /* implementation of grpc_transport_set_pollset */ |
| void (*set_pollset)(grpc_transport* self, grpc_stream* stream, |
| grpc_pollset* pollset); |
| |
| /* implementation of grpc_transport_set_pollset */ |
| void (*set_pollset_set)(grpc_transport* self, grpc_stream* stream, |
| grpc_pollset_set* pollset_set); |
| |
| /* implementation of grpc_transport_perform_stream_op */ |
| void (*perform_stream_op)(grpc_transport* self, grpc_stream* stream, |
| grpc_transport_stream_op_batch* op); |
| |
| /* implementation of grpc_transport_perform_op */ |
| void (*perform_op)(grpc_transport* self, grpc_transport_op* op); |
| |
| /* implementation of grpc_transport_destroy_stream */ |
| void (*destroy_stream)(grpc_transport* self, grpc_stream* stream, |
| grpc_closure* then_schedule_closure); |
| |
| /* implementation of grpc_transport_destroy */ |
| void (*destroy)(grpc_transport* self); |
| |
| /* implementation of grpc_transport_get_endpoint */ |
| grpc_endpoint* (*get_endpoint)(grpc_transport* self); |
| } grpc_transport_vtable; |
| |
| /* an instance of a grpc transport */ |
| struct grpc_transport { |
| struct RawPointerChannelArgTag {}; |
| static absl::string_view ChannelArgName() { return GRPC_ARG_TRANSPORT; } |
| /* pointer to a vtable defining operations on this transport */ |
| const grpc_transport_vtable* vtable; |
| }; |
| |
| #endif /* GRPC_CORE_LIB_TRANSPORT_TRANSPORT_IMPL_H */ |