ActiveState!

ActivePerl Documentation
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 POE::Driver - POE Read/Write Abstraction


NAME

POE::Driver - POE Read/Write Abstraction


SUPPORTED PLATFORMS

  • Linux
  • Solaris
  • Windows
This module is not included with the standard ActivePerl distribution. It is available as a separate download using PPM.

SYNOPSIS

  $driver = new POE::Driver::Something();
  $arrayref_of_data_chunks = $driver->get($filehandle);
  $queue_size = $driver->put($arrayref_of_data_chunks);
  $queue_size = $driver->flush($filehandle);


DESCRIPTION

Drivers provide a generic interface for low-level file I/O. Wheels use this interface to read and write files, sockets, and things, without having to know the details for each.

In theory, drivers should be pretty much interchangeable. In practice, there seems to be an impermeable barrier between the different SOCK_* types.


PUBLIC DRIVER METHODS

These methods are the generic Driver interface. Specific drivers may have additional methods.

  • POE::Driver::new()

    The new() method creates and initializes a new driver. Specific drivers may have different constructor parameters.

  • POE::Driver::get($filehandle)

    The get() method immediately tries to read information from a filehandle. It returns a reference to an array of received data chunks. The array may be empty if nothing could be read. The array reference it returns is a suitable parameter to POE::Filter::get().

    Wheels usually call the get() method from their read select states.

  • POE::Driver::put($arrayref_of_data_chunks)

    The put() method places raw data into the driver's output queue. Some drivers may flush data from the put() method. It accepts a reference to an array of writable chunks, and it returns the number of elements it its output queue.

    Wheels usually call the put() method from their own put() methods.

  • POE::Driver::flush($filehandle)

    The flush() method attempts to flush some data from the driver's output queue to the file. It returns the number of elements remaining in the output queue after the flush.

    Wheels usually call the flush() method from their write select states.


SEE ALSO

POE::Driver::SysRW


BUGS

There is no POE::Driver::SendRecv


AUTHORS & COPYRIGHTS

Please see the POE manpage.

 POE::Driver - POE Read/Write Abstraction