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@ -86,8 +86,11 @@ void ServerBuilder::AddListeningPort(const grpc::string& addr, |
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std::unique_ptr<Server> ServerBuilder::BuildAndStart() { |
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std::unique_ptr<ThreadPoolInterface> thread_pool; |
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// Does this server have atleast one sync method
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bool has_sync_methods = false; |
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for (auto it = services_.begin(); it != services_.end(); ++it) { |
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if ((*it)->service->has_synchronous_methods()) { |
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has_sync_methods = true; |
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if (thread_pool == nullptr) { |
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thread_pool.reset(CreateDefaultThreadPool()); |
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break; |
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@ -105,6 +108,12 @@ std::unique_ptr<Server> ServerBuilder::BuildAndStart() { |
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compression_options_.enabled_algorithms_bitset); |
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std::unique_ptr<Server> server( |
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new Server(thread_pool.release(), true, max_message_size_, &args)); |
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// If the server has atleast one sync methods, we know that this is a Sync
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// server or a Hybrid server and the completion queue (server->cq_) would be
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// frequently polled.
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int num_frequently_polled_cqs = has_sync_methods ? 1 : 0; |
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for (auto cq = cqs_.begin(); cq != cqs_.end(); ++cq) { |
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// A completion queue that is not polled frequently (by calling Next() or
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// AsyncNext()) is not safe to use for listening to incoming channels.
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@ -113,11 +122,19 @@ std::unique_ptr<Server> ServerBuilder::BuildAndStart() { |
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if ((*cq)->IsFrequentlyPolled()) { |
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grpc_server_register_completion_queue(server->server_, (*cq)->cq(), |
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nullptr); |
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num_frequently_polled_cqs++; |
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} else { |
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grpc_server_register_non_listening_completion_queue(server->server_, |
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(*cq)->cq(), nullptr); |
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} |
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} |
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if (num_frequently_polled_cqs == 0) { |
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gpr_log(GPR_ERROR, |
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"Atleast one of the completion queues must be frequently polled"); |
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return nullptr; |
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} |
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for (auto service = services_.begin(); service != services_.end(); |
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service++) { |
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if (!server->RegisterService((*service)->host.get(), (*service)->service)) { |
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