ProcessIO

scala.sys.process.ProcessIO

finalclassProcessIO(valwriteInput:OutputStream=>Unit,valprocessOutput:InputStream=>Unit,valprocessError:InputStream=>Unit,valdaemonizeThreads:Boolean)

This class is used to control the I/O of everyscala.sys.process.Process. The functions used to create it will be called with the process streams once it has been started. It might not be necessary to useProcessIO directly --scala.sys.process.ProcessBuilder can return the process output to the caller, or use ascala.sys.process.ProcessLogger which avoids direct interaction with a stream. One can even use the factories atBasicIO to create aProcessIO, or use its helper methods when creating one's ownProcessIO.

When creating aProcessIO, it is important toclose all streams when finished, since the JVM might use system resources to capture the process input and output, and will not release them unless the streams are explicitly closed.

ProcessBuilder will callwriteInput,processOutput andprocessError in separate threads, and if daemonizeThreads is true, they will all be marked as daemon threads.

Value parameters

daemonizeThreads: Indicates whether the newly spawned threads that will runprocessOutput,processError andwriteInput should be marked as daemon threads.
processError: Function that will be called with theInputStream from which all error output of the process must be read from. This will be called in a newly spawned thread.
processOutput: Function that will be called with theInputStream from which all normal output of the process must be read from. This will be called in a newly spawned thread.
writeInput: Function that will be called with theOutputStream to which all input to the process must be written. This will be called in a newly spawned thread.