chromium/third_party/grpc/src/src/core/lib/channel/channel_stack.cc

//
//
// 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.
//
//

#include <grpc/support/port_platform.h>

#include "src/core/lib/channel/channel_stack.h"

#include <stdint.h>

#include <memory>
#include <utility>

#include <grpc/support/log.h>

#include "src/core/lib/channel/channel_args.h"
#include "src/core/lib/gpr/alloc.h"

EventEngine;

grpc_core::TraceFlag grpc_trace_channel(false, "channel");
grpc_core::TraceFlag grpc_trace_channel_stack(false, "channel_stack");

// Memory layouts.

// Channel stack is laid out as: {
//   grpc_channel_stack stk;
//   padding to GPR_MAX_ALIGNMENT
//   grpc_channel_element[stk.count];
//   per-filter memory, aligned to GPR_MAX_ALIGNMENT
// }

// Call stack is laid out as: {
//   grpc_call_stack stk;
//   padding to GPR_MAX_ALIGNMENT
//   grpc_call_element[stk.count];
//   per-filter memory, aligned to GPR_MAX_ALIGNMENT
// }

size_t grpc_channel_stack_size(const grpc_channel_filter** filters,
                               size_t filter_count) { … }

#define CHANNEL_ELEMS_FROM_STACK(stk) …

#define CALL_ELEMS_FROM_STACK(stk) …

grpc_channel_element* grpc_channel_stack_element(
    grpc_channel_stack* channel_stack, size_t index) { … }

grpc_channel_element* grpc_channel_stack_last_element(
    grpc_channel_stack* channel_stack) { … }

size_t grpc_channel_stack_filter_instance_number(
    grpc_channel_stack* channel_stack, grpc_channel_element* elem) { … }

grpc_call_element* grpc_call_stack_element(grpc_call_stack* call_stack,
                                           size_t index) { … }

grpc_error_handle grpc_channel_stack_init(
    int initial_refs, grpc_iomgr_cb_func destroy, void* destroy_arg,
    const grpc_channel_filter** filters, size_t filter_count,
    const grpc_core::ChannelArgs& channel_args, const char* name,
    grpc_channel_stack* stack) { … }

void grpc_channel_stack_destroy(grpc_channel_stack* stack) { … }

grpc_error_handle grpc_call_stack_init(
    grpc_channel_stack* channel_stack, int initial_refs,
    grpc_iomgr_cb_func destroy, void* destroy_arg,
    const grpc_call_element_args* elem_args) { … }

void grpc_call_stack_set_pollset_or_pollset_set(grpc_call_stack* call_stack,
                                                grpc_polling_entity* pollent) { … }

void grpc_call_stack_ignore_set_pollset_or_pollset_set(
    grpc_call_element* /*elem*/, grpc_polling_entity* /*pollent*/) { … }

void grpc_call_stack_destroy(grpc_call_stack* stack,
                             const grpc_call_final_info* final_info,
                             grpc_closure* then_schedule_closure) { … }

void grpc_call_next_op(grpc_call_element* elem,
                       grpc_transport_stream_op_batch* op) { … }

void grpc_channel_next_get_info(grpc_channel_element* elem,
                                const grpc_channel_info* channel_info) { … }

void grpc_channel_next_op(grpc_channel_element* elem, grpc_transport_op* op) { … }

grpc_channel_stack* grpc_channel_stack_from_top_element(
    grpc_channel_element* elem) { … }

grpc_call_stack* grpc_call_stack_from_top_element(grpc_call_element* elem) { … }

void grpc_channel_stack_no_post_init(grpc_channel_stack*,
                                     grpc_channel_element*) { … }

namespace {

grpc_core::NextPromiseFactory ClientNext(grpc_channel_element* elem) { … }

grpc_core::NextPromiseFactory ServerNext(grpc_channel_element* elem) { … }

}  // namespace

grpc_core::ArenaPromise<grpc_core::ServerMetadataHandle>
grpc_channel_stack::MakeClientCallPromise(grpc_core::CallArgs call_args) { … }

grpc_core::ArenaPromise<grpc_core::ServerMetadataHandle>
grpc_channel_stack::MakeServerCallPromise(grpc_core::CallArgs call_args) { … }