[ViewVC] Diff of: cvs/EV/EV.pm

Comparing EV/EV.pm (file contents):
Revision 1.127 by root, Sun Mar 28 15:48:21 2010 UTC vs.
Revision 1.128 by root, Thu Oct 21 02:46:59 2010 UTC

 =item $w = $loop->check_ns ($callback)
 Call the callback just after the process wakes up again (after it has
 gathered events), but before any other callbacks have been invoked.
-This is used to integrate other event-based software into the EV
+This can be used to integrate other event-based software into the EV
 mainloop: You register a prepare callback and in there, you create io and
 timer watchers as required by the other software. Here is a real-world
 example of integrating Net::SNMP (with some details left out):
    our @snmp_watcher;
 The callbacks of the created watchers will not be called as the watchers
 are destroyed before this can happen (remember EV::check gets called
 first).
 The C<check_ns> variant doesn't start (activate) the newly created watcher.
+=item EV::CHECK constant issues
+Like all other watcher types, there is a bitmask constant for use in
+C<$revents> and other places. The C<EV::CHECK> is special as it has
+the same name as the C<CHECK> sub called by Perl. This doesn't cause
+big issues on newer perls (beginning with 5.8.9), but it means thatthe
+constant must be I<inlined>, i.e. runtime calls will not work. That means
+that as long as you always C<use EV> and then C<EV::CHECK> you are on the
+safe side.
 =back
 =head3 FORK WATCHERS - the audacity to resume the event loop after a fork

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