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Diffstat (limited to 'src/node/ext/completion_queue_async_worker.h')
-rw-r--r-- | src/node/ext/completion_queue_async_worker.h | 79 |
1 files changed, 79 insertions, 0 deletions
diff --git a/src/node/ext/completion_queue_async_worker.h b/src/node/ext/completion_queue_async_worker.h new file mode 100644 index 0000000000..2c928b7024 --- /dev/null +++ b/src/node/ext/completion_queue_async_worker.h @@ -0,0 +1,79 @@ +/* + * + * Copyright 2014, 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. + * + */ + +#ifndef NET_GRPC_NODE_COMPLETION_QUEUE_ASYNC_WORKER_H_ +#define NET_GRPC_NODE_COMPLETION_QUEUE_ASYNC_WORKER_H_ +#include <nan.h> + +#include "grpc/grpc.h" + +namespace grpc { +namespace node { + +/* A worker that asynchronously calls completion_queue_next, and queues onto the + node event loop a call to the function stored in the event's tag. */ +class CompletionQueueAsyncWorker : public NanAsyncWorker { + public: + CompletionQueueAsyncWorker(); + + ~CompletionQueueAsyncWorker(); + /* Calls completion_queue_next with the provided deadline, and stores the + event if there was one or sets an error message if there was not */ + void Execute(); + + /* Returns the completion queue attached to this class */ + static grpc_completion_queue *GetQueue(); + + /* Convenience function to create a worker with the given arguments and queue + it to run asynchronously */ + static void Next(); + + /* Initialize the CompletionQueueAsyncWorker class */ + static void Init(v8::Handle<v8::Object> exports); + + protected: + /* Called when Execute has succeeded (completed without setting an error + message). Calls the saved callback with the event that came from + completion_queue_next */ + void HandleOKCallback(); + + private: + grpc_event *result; + + static grpc_completion_queue *queue; +}; + +} // namespace node +} // namespace grpc + +#endif // NET_GRPC_NODE_COMPLETION_QUEUE_ASYNC_WORKER_H_ |