[ViewVC] Diff of: cvs/Coro/Event/Handle.pm

Comparing Coro/Event/Handle.pm (file contents):
Revision 1.10 by root, Mon Sep 24 01:36:21 2001 UTC vs.
Revision 1.11 by root, Mon Sep 24 02:05:44 2001 UTC

 Returns the "real" (non-blocking) filehandle. Use this if you want to
 do operations on the file handle you cannot do using the Coro::Handle
 interface.
-=item $fh->unsysread($data)
+=item $fh->rbuf
-Pushes the given data into the input buffer. The following calls to
+Returns the current contents of the raed buffer (this is an lvalue, so you
-read/sysread will first return this data.
+can change the read buffer if you like).
+You can use this fucntion to implement your own optimized reader when neither
+readline nor sysread are viable candidates, like this:
+  # first get the _real_ non-blocking filehandle
+  # and fetch the current contents of the read buffer
+  my $nb_fh = $fh->fh;
+  my $buf = $fh->rbuf;
+  for(;;) {
+     # now use buffer contents, modifying
+     # if necessary to reflect the removed data
+     last if $buf ne ""; # we have leftover data
+     # read another buffer full of data
+     $fh->readable or die "end of file";
+     sysread $nb_fh, $buf, 8192;
+  }
+  # put the read buffer back
+  $fh->rbuf = $buf;
 =cut
 sub fh {
    (tied ${$_[0]})->[0];
 }
-sub unsysread {
+sub rbuf : lvalue {
-   substr tied(${$_[0]})->[3], 0, 0, $_[1];
+   tied(${$_[0]})->[3];
 }
 package Coro::Handle::FH;
 no warnings qw(uninitialized);

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