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_PLATFORM_SUBPROCESS_H_ 17 #define TENSORFLOW_CORE_PLATFORM_SUBPROCESS_H_ 18 19 #include <memory> 20 #include <vector> 21 22 namespace tensorflow { 23 24 // Channel identifiers. 25 enum Channel { 26 CHAN_STDIN = 0, 27 CHAN_STDOUT = 1, 28 CHAN_STDERR = 2, 29 }; 30 31 // Specify how a channel is handled. 32 enum ChannelAction { 33 // Close the file descriptor when the process starts. 34 // This is the default behavior. 35 ACTION_CLOSE, 36 37 // Make a pipe to the channel. It is used in the Communicate() method to 38 // transfer data between the parent and child processes. 39 ACTION_PIPE, 40 41 // Duplicate the parent's file descriptor. Useful if stdout/stderr should 42 // go to the same place that the parent writes it. 43 ACTION_DUPPARENT, 44 }; 45 46 // Supports spawning and killing child processes. 47 class SubProcess; 48 49 // Returns an object that represents a child process that will be 50 // launched with the given command-line arguments `argv`. The process 51 // must be explicitly started by calling the Start() method on the 52 // returned object. 53 std::unique_ptr<SubProcess> CreateSubProcess(const std::vector<string>& argv); 54 55 } // namespace tensorflow 56 57 #include "tensorflow/core/platform/platform.h" 58 59 #if defined(PLATFORM_GOOGLE) 60 #include "tensorflow/core/platform/google/subprocess.h" 61 #elif defined(PLATFORM_POSIX) || defined(PLATFORM_POSIX_ANDROID) || \ 62 defined(PLATFORM_GOOGLE_ANDROID) 63 #include "tensorflow/core/platform/posix/subprocess.h" 64 #elif defined(PLATFORM_WINDOWS) 65 #include "tensorflow/core/platform/windows/subprocess.h" 66 #else 67 #error Define the appropriate PLATFORM_<foo> macro for this platform 68 #endif 69 70 #endif // TENSORFLOW_CORE_PLATFORM_SUBPROCESS_H_ 71