gRPC async_client中的内存泄漏

问：

我以与示例类似的方式使用。gRPCasync client

在这个例子中（在官方发布）中，客户端为要发送的消息分配内存，使用地址作为 ，当消息在侦听器线程中被应答时，内存（已知为 - 地址）是空闲的。gRPCgithubtagcompletion queuetag

我担心服务器不响应消息并且内存永远不会空闲的情况。

• 能保护我免受这种情况的影响吗？gRPC
• 我应该以不同的方式实现它吗？（使用智能指针/将指针保存在数据结构中/等）

异步客户端发送函数

void SayHello(const std::string& user) {
    // Data we are sending to the server.
    HelloRequest request;
    request.set_name(user);

    // Call object to store rpc data
    AsyncClientCall* call = new AsyncClientCall;

    // Because we are using the asynchronous API, we need to hold on to
    // the "call" instance in order to get updates on the ongoing RPC.
    call->response_reader =
        stub_->PrepareAsyncSayHello(&call->context, request, &cq_);

    // StartCall initiates the RPC call
    call->response_reader->StartCall();

    call->response_reader->Finish(&call->reply, &call->status, (void*)call);

}

线程的异步客户端接收函数

void AsyncCompleteRpc() {
    void* got_tag;
    bool ok = false;

    // Block until the next result is available in the completion queue "cq".
    while (cq_.Next(&got_tag, &ok)) {
        // The tag in this example is the memory location of the call object
        AsyncClientCall* call = static_cast<AsyncClientCall*>(got_tag);

        // Verify that the request was completed successfully. Note that "ok"
        // corresponds solely to the request for updates introduced by Finish().
        GPR_ASSERT(ok);

        if (call->status.ok())
            std::cout << "Greeter received: " << call->reply.message() << std::endl;
        else
            std::cout << "RPC failed" << std::endl;

        // Once we're complete, deallocate the call object.
        delete call;
    }
}

主要

int main(int argc, char** argv) {


    GreeterClient greeter(grpc::CreateChannel(
            "localhost:50051", grpc::InsecureChannelCredentials()));

    // Spawn reader thread that loops indefinitely
    std::thread thread_ = std::thread(&GreeterClient::AsyncCompleteRpc, &greeter);

    for (int i = 0; i < 100; i++) {
        std::string user("world " + std::to_string(i));
        greeter.SayHello(user);  // The actual RPC call!
    }

    std::cout << "Press control-c to quit" << std::endl << std::endl;
    thread_.join();  //blocks forever

    return 0;
}