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

Comparing EV/EV.pm (file contents):
Revision 1.67 by root, Sun Dec 9 02:14:23 2007 UTC vs.
Revision 1.73 by root, Fri Dec 21 05:10:01 2007 UTC

 package EV;
 use strict;
 BEGIN {
-   our $VERSION = '1.72';
+   our $VERSION = '2.0';
    use XSLoader;
    XSLoader::load "EV", $VERSION;
 }
 @EV::IO::ISA       =
 @EV::Check::ISA    =
 @EV::Embed::ISA    =
 @EV::Fork::ISA     =
    "EV::Watcher";
+@EV::Loop::Default::ISA = "EV::Loop";
+=head1 EVENT LOOPS
+EV supports multiple event loops: There is a single "default event loop"
+that can handle everything including signals and child watchers, and any
+number of "dynamic event loops" that can use different backends (with
+various limitations), but no child and signal watchers.
+You do not have to do anything to create the default event loop: When
+the module is loaded a suitable backend is selected on the premise of
+selecting a working backend (which for example rules out kqueue on most
+BSDs). Modules should, unless they have "special needs" always use the
+default loop as this is fastest (perl-wise), best supported by other
+modules (e.g. AnyEvent or Coro) and most portable event loop.
+For specific programs you cna create additional event loops dynamically.
+=over 4
+=item $loop = new EV::loop [$flags]
+Create a new event loop as per the specified flags. Please refer to the
+C<ev_loop_new ()> function description in the libev documentation
+(L<http://pod.tst.eu/http://cvs.schmorp.de/libev/ev.pod#GLOBAL_FUNCTIONS>)
+for more info.
+The loop will automatically be destroyed when it is no longer referenced
+by any watcher and the loop object goes out of scope.
+Using C<EV::FLAG_FORKCHECK> is recommended, as only the default event loop
+is protected by this module.
+=item $loop->loop_fork
+Must be called after a fork in the child, before entering or continuing
+the event loop. An alternative is to use C<EV::FLAG_FORKCHECK> which calls
+this fucntion automatically, at some performance loss (refer to the libev
+documentation).
+=back
 =head1 BASIC INTERFACE
 =over 4
 =item $EV::DIED
 Returns the current time in (fractional) seconds since the epoch.
 =item $time = EV::now
+=item $time = $loop->now
 Returns the time the last event loop iteration has been started. This
 is the time that (relative) timers are based on, and refering to it is
 usually faster then calling EV::time.
-=item $method = EV::method
+=item $backend = EV::backend
+=item $backend = $loop->backend
 Returns an integer describing the backend used by libev (EV::METHOD_SELECT
 or EV::METHOD_EPOLL).
 =item EV::loop [$flags]
+=item $loop->loop ([$flags])
 Begin checking for events and calling callbacks. It returns when a
 callback calls EV::unloop.
 The $flags argument can be one of the following:
    EV::LOOP_ONESHOT   block at most once (wait, but do not loop)
    EV::LOOP_NONBLOCK  do not block at all (fetch/handle events but do not wait)
 =item EV::unloop [$how]
+=item $loop->unloop ([$how])
 When called with no arguments or an argument of EV::UNLOOP_ONE, makes the
 innermost call to EV::loop return.
 When called with an argument of EV::UNLOOP_ALL, all calls to EV::loop will return as
 fast as possible.
 =item $count = EV::loop_count
+=item $count = $loop->loop_count
 Return the number of times the event loop has polled for new
 events. Sometiems useful as a generation counter.
 =item EV::once $fh_or_undef, $events, $timeout, $cb->($revents)
+=item $loop->once ($fh_or_undef, $events, $timeout, $cb->($revents))
 This function rolls together an I/O and a timer watcher for a single
 one-shot event without the need for managing a watcher object.
 If C<$fh_or_undef> is a filehandle or file descriptor, then C<$events>
 of them triggers, then they will be stopped and freed, and the callback
 invoked.
 =item EV::feed_fd_event ($fd, $revents)
+=item $loop->feed_fd_event ($fd, $revents)
 Feed an event on a file descriptor into EV. EV will react to this call as
 if the readyness notifications specified by C<$revents> (a combination of
 C<EV::READ> and C<EV::WRITE>) happened on the file descriptor C<$fd>.
 =item EV::feed_signal_event ($signal)
 specified by C<$signal> had occured.
 =back
-=head2 WATCHER OBJECTS
+=head1 WATCHER OBJECTS
 A watcher is an object that gets created to record your interest in some
 event. For instance, if you want to wait for STDIN to become readable, you
 would create an EV::io watcher for that:
    $udp_watcher->keepalive (0);
 =back
-=head2 WATCHER TYPES
+=head1 WATCHER TYPES
 Each of the following subsections describes a single watcher type.
 =head3 I/O WATCHERS - is this file descriptor readable or writable?
 =over 4
 =item $w = EV::io $fileno_or_fh, $eventmask, $callback
 =item $w = EV::io_ns $fileno_or_fh, $eventmask, $callback
+=item $w = $loop->io 8$fileno_or_fh, $eventmask, $callback)
+=item $w = $loop->io_ns ($fileno_or_fh, $eventmask, $callback)
 As long as the returned watcher object is alive, call the C<$callback>
 when at least one of events specified in C<$eventmask> occurs.
 The $eventmask can be one or more of these constants ORed together:
 =over 4
 =item $w = EV::timer $after, $repeat, $callback
 =item $w = EV::timer_ns $after, $repeat, $callback
+=item $w = $loop->timer ($after, $repeat, $callback)
+=item $w = $loop->timer_ns ($after, $repeat, $callback)
 Calls the callback after C<$after> seconds (which may be fractional). If
 C<$repeat> is non-zero, the timer will be restarted (with the $repeat
 value as $after) after the callback returns.
 =over 4
 =item $w = EV::periodic $at, $interval, $reschedule_cb, $callback
 =item $w = EV::periodic_ns $at, $interval, $reschedule_cb, $callback
+=item $w = $loop->periodic ($at, $interval, $reschedule_cb, $callback)
+=item $w = $loop->periodic_ns ($at, $interval, $reschedule_cb, $callback)
 Similar to EV::timer, but is not based on relative timeouts but on
 absolute times. Apart from creating "simple" timers that trigger "at" the
 specified time, it can also be used for non-drifting absolute timers and
 more complex, cron-like, setups that are not adversely affected by time
 =item $w->again
 Simply stops and starts the watcher again.
+=item $time = $w->at
+Return the time that the watcher is expected to trigger next.
 =back
 =head3 SIGNAL WATCHERS - signal me when a signal gets signalled!
 =item $w = EV::child $pid, $callback
 =item $w = EV::child_ns $pid, $callback
+=item $w = $loop->child ($pid, $callback)
+=item $w = $loop->child_ns ($pid, $callback)
 Call the callback when a status change for pid C<$pid> (or any pid if
 C<$pid> is 0) has been received. More precisely: when the process receives
 a C<SIGCHLD>, EV will fetch the outstanding exit/wait status for all
 changed/zombie children and call the callback.
 =item $w = EV::stat $path, $interval, $callback
 =item $w = EV::stat_ns $path, $interval, $callback
+=item $w = $loop->stat ($path, $interval, $callback)
+=item $w = $loop->stat_ns ($path, $interval, $callback)
 Call the callback when a file status change has been detected on
 C<$path>. The C<$path> does not need to exist, changing from "path exists"
 to "path does not exist" is a status change like any other.
 The C<$interval> is a recommended polling interval for systems where
 =over 4
 =item $w = EV::idle $callback
 =item $w = EV::idle_ns $callback
+=item $w = $loop->idle ($callback)
+=item $w = $loop->idle_ns ($callback)
 Call the callback when there are no other pending watchers of the same or
 higher priority (excluding check, prepare and other idle watchers of the
 same or lower priority, of course). They are called idle watchers because
 when the watcher is the highest priority pending event in the process, the
 =item $w = EV::prepare $callback
 =item $w = EV::prepare_ns $callback
+=item $w = $loop->prepare ($callback)
+=item $w = $loop->prepare_ns 8$callback)
 Call the callback just before the process would block. You can still
 create/modify any watchers at this point.
 See the EV::check watcher, below, for explanations and an example.
 =over 4
 =item $w = EV::check $callback
 =item $w = EV::check_ns $callback
+=item $w = $loop->check ($callback)
+=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
 =over 4
 =item $w = EV::fork $callback
 =item $w = EV::fork_ns $callback
+=item $w = $loop->fork ($callback)
+=item $w = $loop->fork_ns ($callback)
 Call the callback before the event loop is resumed in the child process
 after a fork.
 The C<fork_ns> variant doesn't start (activate) the newly created watcher.
 our $DIED = sub {
    warn "EV: error in callback (ignoring): $@";
 };
 default_loop
-   or die 'EV: cannot initialise libev backend. bad $ENV{LIBEV_METHODS}?';
+   or die 'EV: cannot initialise libev backend. bad $ENV{LIBEV_FLAGS}?';
 1;
 =head1 SEE ALSO
-L<EV::ADNS> (asynchronous dns), L<Glib::EV> (makes Glib/Gtk2 use EV as
+L<EV::ADNS> (asynchronous DNS), L<Glib::EV> (makes Glib/Gtk2 use EV as
-event loop), L<Coro::EV> (efficient coroutines with EV).
+event loop), L<EV::Glib> (embed Glib into EV), L<Coro::EV> (efficient
+coroutines with EV), L<Net::SNMP::EV> (asynchronous SNMP).
 =head1 AUTHOR
  Marc Lehmann <schmorp@schmorp.de>
  http://home.schmorp.de/

Diff Legend

-–
+Removed lines
-+
+Added lines
-<
+Changed lines
->
+Changed lines

Comparing EV/EV.pm (file contents): Revision 1.67 by root, Sun Dec 9 02:14:23 2007 UTC vs. Revision 1.73 by root, Fri Dec 21 05:10:01 2007 UTC

Diff Legend

Comparing EV/EV.pm (file contents):
Revision 1.67 by root, Sun Dec 9 02:14:23 2007 UTC vs.
Revision 1.73 by root, Fri Dec 21 05:10:01 2007 UTC