| /* |
| * |
| * Copyright 2015, Google Inc. |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are |
| * met: |
| * |
| * * Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * * Redistributions in binary form must reproduce the above |
| * copyright notice, this list of conditions and the following disclaimer |
| * in the documentation and/or other materials provided with the |
| * distribution. |
| * * Neither the name of Google Inc. nor the names of its |
| * contributors may be used to endorse or promote products derived from |
| * this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| * |
| */ |
| |
| #include <grpc++/server_context.h> |
| |
| #include <mutex> |
| |
| #include <grpc++/impl/call.h> |
| #include <grpc/grpc.h> |
| #include <grpc/support/log.h> |
| #include "src/cpp/util/time.h" |
| |
| namespace grpc { |
| |
| // CompletionOp |
| |
| class ServerContext::CompletionOp GRPC_FINAL : public CallOpBuffer { |
| public: |
| // initial refs: one in the server context, one in the cq |
| CompletionOp() : refs_(2), finalized_(false), cancelled_(false) { |
| AddServerRecvClose(&cancelled_); |
| } |
| bool FinalizeResult(void** tag, bool* status) GRPC_OVERRIDE; |
| |
| bool CheckCancelled(CompletionQueue* cq); |
| |
| void Unref(); |
| |
| private: |
| std::mutex mu_; |
| int refs_; |
| bool finalized_; |
| bool cancelled_; |
| }; |
| |
| void ServerContext::CompletionOp::Unref() { |
| std::unique_lock<std::mutex> lock(mu_); |
| if (--refs_ == 0) { |
| lock.unlock(); |
| delete this; |
| } |
| } |
| |
| bool ServerContext::CompletionOp::CheckCancelled(CompletionQueue* cq) { |
| cq->TryPluck(this); |
| std::lock_guard<std::mutex> g(mu_); |
| return finalized_ ? cancelled_ : false; |
| } |
| |
| bool ServerContext::CompletionOp::FinalizeResult(void** tag, bool* status) { |
| GPR_ASSERT(CallOpBuffer::FinalizeResult(tag, status)); |
| std::unique_lock<std::mutex> lock(mu_); |
| finalized_ = true; |
| if (!*status) cancelled_ = true; |
| if (--refs_ == 0) { |
| lock.unlock(); |
| delete this; |
| } |
| return false; |
| } |
| |
| // ServerContext body |
| |
| ServerContext::ServerContext() |
| : completion_op_(nullptr), |
| call_(nullptr), |
| sent_initial_metadata_(false) {} |
| |
| ServerContext::ServerContext(gpr_timespec deadline, grpc_metadata* metadata, |
| size_t metadata_count) |
| : completion_op_(nullptr), |
| deadline_(Timespec2Timepoint(deadline)), |
| call_(nullptr), |
| sent_initial_metadata_(false) { |
| for (size_t i = 0; i < metadata_count; i++) { |
| client_metadata_.insert(std::make_pair( |
| grpc::string(metadata[i].key), |
| grpc::string(metadata[i].value, |
| metadata[i].value + metadata[i].value_length))); |
| } |
| } |
| |
| ServerContext::~ServerContext() { |
| if (call_) { |
| grpc_call_destroy(call_); |
| } |
| if (completion_op_) { |
| completion_op_->Unref(); |
| } |
| } |
| |
| void ServerContext::BeginCompletionOp(Call* call) { |
| GPR_ASSERT(!completion_op_); |
| completion_op_ = new CompletionOp(); |
| call->PerformOps(completion_op_); |
| } |
| |
| void ServerContext::AddInitialMetadata(const grpc::string& key, |
| const grpc::string& value) { |
| initial_metadata_.insert(std::make_pair(key, value)); |
| } |
| |
| void ServerContext::AddTrailingMetadata(const grpc::string& key, |
| const grpc::string& value) { |
| trailing_metadata_.insert(std::make_pair(key, value)); |
| } |
| |
| } // namespace grpc |