poe::filter::stream(3pm) [debian man page]

POE::Filter::Stream(3pm)				User Contributed Perl Documentation				  POE::Filter::Stream(3pm)

NAME

       POE::Filter::Stream - a no-op filter that passes data through unchanged

SYNOPSIS

	 #!perl

	 use Term::ReadKey;
	 use POE qw(Wheel::ReadWrite Filter::Stream);

	 POE::Session->create(
	   inline_states => {
	     _start => sub {
	       ReadMode "ultra-raw";
	       $_[HEAP]{io} = POE::Wheel::ReadWrite->new(
		 InputHandle => *STDIN,
		 OutputHandle => *STDOUT,
		 InputEvent => "got_some_data",
		 Filter => POE::Filter::Stream->new(),
	       );
	     },
	     got_some_data => sub {
	       $_[HEAP]{io}->put("<$_[ARG0]>");
	       delete $_[HEAP]{io} if $_[ARG0] eq "cC";
	     },
	     _stop => sub {
	       ReadMode "restore";
	       print "
";
	     },
	   }
	 );

	 POE::Kernel->run();
	 exit;

DESCRIPTION

       POE::Filter::Stream passes data through without changing it.  It follows POE::Filter's API and implements no new functionality.

       In the "SYNOPSIS", POE::Filter::Stream is used to collect keystrokes without any interpretation and display output without any
       embellishments.

SEE ALSO

       POE::Filter for more information about filters in general.

       The SEE ALSO section in POE contains a table of contents covering the entire POE distribution.

BUGS

       None known.

AUTHORS &; COPYRIGHTS
       Please see POE for more information about authors and contributors.

perl v5.14.2							    2012-05-15						  POE::Filter::Stream(3pm)

POE::Driver::SysRW(3pm) 				User Contributed Perl Documentation				   POE::Driver::SysRW(3pm)

NAME

       POE::Driver::SysRW - buffered, non-blocking I/O using sysread and syswrite

SYNOPSIS

       "SYNOPSIS" in POE::Driver illustrates how the interface works.  This module is merely one implementation.

DESCRIPTION

       This driver implements POE::Driver using sysread and syswrite.

PUBLIC METHODS

       POE::Driver::SysRW introduces some additional features not covered in the base interface.

   new [BlockSize => OCTETS]
       new() creates a new buffered I/O driver that uses sysread() to read data from a handle and syswrite() to flush data to that handle.  The
       constructor accepts one optional named parameter, "BlockSize", which indicates the maximum number of OCTETS that will be read at one time.

       "BlockSize" is 64 kilobytes (65536 octets) by default.  Higher values may improve performance in streaming applications, but the trade-off
       is a lower event granularity and increased resident memory usage.

       Lower "BlockSize" values reduce memory consumption somewhat with corresponding throughput penalties.

	 my $driver = POE::Driver::SysRW->new;

	 my $driver = POE::Driver::SysRW->new( BlockSize => $block_size );

       Drivers are commonly instantiated within POE::Wheel constructor calls:

	 $_[HEAP]{wheel} = POE::Wheel::ReadWrite->new(
	   InputHandle => *STDIN,
	   OutputHandle => *STDOUT,
	   Driver => POE::Driver::SysRW->new(),
	   Filter => POE::Filter::Line->new(),
	 );

       Applications almost always use POE::Driver::SysRW, so POE::Wheel objects almost always will create their own if no Driver is specified.

   All Other Methods
       POE::Driver::SysRW documents the abstract interface documented in POE::Driver.  Please see POE::Driver for more details about the following
       methods:

       flush
       get
       get_out_messages_buffered
       put

SEE ALSO

       POE::Driver, POE::Wheel.

       Also see the SEE ALSO section of POE, which contains a brief roadmap of POE's documentation.

AUTHORS &; COPYRIGHTS
       Please see POE for more information about authors and contributors.

perl v5.14.2							    2012-05-15						   POE::Driver::SysRW(3pm)