Programmer Reference : Native Process Framework (OsProcess) : OsPipeStream
OsPipeStream
Description
A pipe stream is a kind of buffered process stream that has a communication channel with the process via an operating system pipe. A pipe is an interprocess communication channel of fixed size that is implemented by various operating systems.
All instances of pipe stream also have smalltalk 'buffers' (usually <OsPipeStreamBuffer>) that allow for efficient reading and writing.
Class Methods
new 
  Answer a new pipe stream
   
     Answers:
        <OsPipeStream>
on: 
  Answer a new pipe stream on pipe descriptor with the default buffer
     size for the concrete subclass
        
     Arguments: 
        aPipeDescriptor - <Integer>
     Answers:
        <OsPipeStream>
on:withBufferSize: 
  Answer a new pipe stream on pipe descriptor with the defined
     buffer size
        
     Arguments: 
        aPipeDescriptor - <Integer>
        aBufferSize - <Integer>
     Answers:
        <OsPipeStream>
withBufferSize: 
  Answer a new pipe stream  with the defined
     buffer size
        
     Arguments: 
        aBufferSize - <Integer> or nil for default
     Answers:
        <OsPipeStream>
Instance Methods
close 
  Close the pipe.
     Assume the pipe is closed if the descriptor is nil
     The pipeDescriptor will be nil after the call (via prim)
isAccessible 
  Answer true if the pipe descriptor is valid and accessible
    
     Answers:
        <Boolean>
isBytes: 
  If true, adjust the buffers to store bytes.
     If false, adjust the buffers to store chars.
     Inform the @stream
        
     Arguments:
        aBoolean - <Boolean>
isClosed 
  A pipe stream is considered closed if the associated descriptor is nil
   
     Answers:
        <Boolean>
Last modified date: 12/27/2024