1 /* Copyright 2016 The TensorFlow Authors. All Rights Reserved. 2 3 Licensed under the Apache License, Version 2.0 (the "License"); 4 you may not use this file except in compliance with the License. 5 You may obtain a copy of the License at 6 7 http://www.apache.org/licenses/LICENSE-2.0 8 9 Unless required by applicable law or agreed to in writing, software 10 distributed under the License is distributed on an "AS IS" BASIS, 11 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 See the License for the specific language governing permissions and 13 limitations under the License. 14 ==============================================================================*/ 15 16 #ifndef TENSORFLOW_CORE_DISTRIBUTED_RUNTIME_REMOTE_DEVICE_H_ 17 #define TENSORFLOW_CORE_DISTRIBUTED_RUNTIME_REMOTE_DEVICE_H_ 18 19 #include <functional> 20 #include <string> 21 #include <vector> 22 #include "tensorflow/core/lib/core/status.h" 23 24 namespace tensorflow { 25 class Device; 26 class Env; 27 class WorkerCacheInterface; 28 29 // NewRemoteDevices discovers available devices on the 30 // 'remote_worker'. The implementation uses 'channel_cache' to 31 // discover how to communicate with the 'remote_worker' (via gRPC, for 32 // example). 33 // 34 // NewRemoteDevices does not block. 35 // 36 // On success, the 'done' callback is given the OK status and a vector 37 // of Device*. The caller should take ownership of these devices. 38 // 39 // Otherwise, the 'done' callback is given an error status and the 40 // vector is empty. 41 typedef std::function<void(const Status&, std::vector<Device*>*)> 42 NewRemoteDevicesDone; 43 void NewRemoteDevices(Env* env, WorkerCacheInterface* worker_cache, 44 const string& remote_worker, NewRemoteDevicesDone done); 45 46 } // namespace tensorflow 47 48 #endif // TENSORFLOW_CORE_DISTRIBUTED_RUNTIME_REMOTE_DEVICE_H_ 49
