grpc-web/net/grpc/gateway/runtime/grpc_event_queue.h

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/**
*
* Copyright 2018 Google LLC
*
* 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
*
* https://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 NET_GRPC_GATEWAY_RUNTIME_GRPC_EVENT_QUEUE_H_
#define NET_GRPC_GATEWAY_RUNTIME_GRPC_EVENT_QUEUE_H_
#include "third_party/grpc/include/grpc/grpc.h"
#include "third_party/grpc/src/core/lib/gprpp/thd.h"
namespace grpc {
namespace gateway {
// The queue which process GRPC IO events. In GRPC gateway, we use one single
// thread to process all GRPC IO events in a non-blocking way.
class GrpcEventQueue {
public:
GrpcEventQueue();
virtual ~GrpcEventQueue();
GrpcEventQueue(const GrpcEventQueue&) = delete;
GrpcEventQueue& operator=(const GrpcEventQueue&) = delete;
// Starts the GRPC IO events processing loop.
void Start();
// Stops the GRPC IO events processing loop.
void Stop();
// Returns the GRPC completion queue which is used to process all GRPC IO
// events.
grpc_completion_queue* queue() { return queue_; }
private:
static void ExecuteEventLoop(void* queue);
grpc_completion_queue* queue_;
grpc_core::Thread thread_;
};
} // namespace gateway
} // namespace grpc
#endif // NET_GRPC_GATEWAY_RUNTIME_GRPC_EVENT_QUEUE_H_