_ProcessOperationsNC (omero-blitz 5.8.3 API)

All Known Subinterfaces:

_ScriptProcessOperationsNC, Process, ScriptProcess

All Known Implementing Classes:

_ProcessDisp, _ProcessTie, _ScriptProcessDisp, _ScriptProcessTie
```
public interface _ProcessOperationsNC
```
Thin wrapper around a system-level process. Most closely resembles Python's subprocess.Popen class.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`int`	`_wait()`	Blocks until poll() would return a non-null return code.
`boolean`	`cancel()`	Signal to the Process that it should terminate.
`boolean`	`kill()`	Terminate the Process immediately.
`RInt`	`poll()`	Returns the return code of the process, or null if unfinished.
`void`	`registerCallback(ProcessCallbackPrx cb)`	Add a callback for end-of-life events
`void`	`shutdown()`	First attempts cancel() several times and finally resorts to kill to force the process to shutdown cleanly.
`void`	`unregisterCallback(ProcessCallbackPrx cb)`	Remove a callback for end-of-life events

- Method Detail
  - poll
```
RInt poll()
   throws ServerError
```
    Returns the return code of the process, or null if unfinished.
    
    Throws:
    
    ServerError
  - _wait
```
int _wait()
   throws ServerError
```
    Blocks until poll() would return a non-null return code.
    
    Throws:
    
    ServerError
  - cancel
```
boolean cancel()
        throws ServerError
```
    Signal to the Process that it should terminate. This may be done "softly" for a given time period.
    
    Throws:
    
    ServerError
  - kill
```
boolean kill()
```
    Terminate the Process immediately.
  - shutdown
```
void shutdown()
```
    First attempts cancel() several times and finally resorts to kill to force the process to shutdown cleanly. This method doesn't return any value or throw an exception so that it can be called oneway.
  - registerCallback
```
void registerCallback(ProcessCallbackPrx cb)
               throws ServerError
```
    Add a callback for end-of-life events
    
    Throws:
    
    ServerError
  - unregisterCallback
```
void unregisterCallback(ProcessCallbackPrx cb)
                 throws ServerError
```
    Remove a callback for end-of-life events
    
    Throws:
    
    ServerError