[ViewVC] Diff of: cvs/AnyEvent-MP/MP.pm

Comparing AnyEvent-MP/MP.pm (file contents):
Revision 1.4 by root, Sat Aug 1 07:36:30 2009 UTC vs.
Revision 1.22 by root, Tue Aug 4 18:33:30 2009 UTC

…		…
4		4
5	=head1 SYNOPSIS	5	=head1 SYNOPSIS
6		6
7	use AnyEvent::MP;	7	use AnyEvent::MP;
8		8
9	NODE # returns this node identifier
10	$NODE # contains this node identifier	9	$NODE # contains this node's noderef
		10	NODE # returns this node's noderef
		11	NODE $port # returns the noderef of the port
11		12
12	snd $port, type => data...;	13	snd $port, type => data...;
		14
		15	$SELF # receiving/own port id in rcv callbacks
13		16
14	rcv $port, smartmatch => $cb->($port, @msg);	17	rcv $port, smartmatch => $cb->($port, @msg);
15		18
16	# examples:	19	# examples:
17	rcv $port2, ping => sub { snd $_[0], "pong"; 0 };	20	rcv $port2, ping => sub { snd $_[0], "pong"; 0 };
…		…
27	This module (-family) implements a simple message passing framework.	30	This module (-family) implements a simple message passing framework.
28		31
29	Despite its simplicity, you can securely message other processes running	32	Despite its simplicity, you can securely message other processes running
30	on the same or other hosts.	33	on the same or other hosts.
31		34
		35	At the moment, this module family is severly brokena nd underdocumented,
		36	so do not use. This was uploaded mainly to reserve the CPAN namespace -
		37	stay tuned!
		38
32	=head1 CONCEPTS	39	=head1 CONCEPTS
33		40
34	=over 4	41	=over 4
35		42
36	=item port	43	=item port
…		…
52		59
53	Initially, nodes are either private (single-process only) or hidden	60	Initially, nodes are either private (single-process only) or hidden
54	(connected to a master node only). Only when they epxlicitly "become	61	(connected to a master node only). Only when they epxlicitly "become
55	public" can you send them messages from unrelated other nodes.	62	public" can you send them messages from unrelated other nodes.
56		63
57	=item noderef - C<host:port,host:port...>, C<id@noderef, C<id>	64	=item noderef - C<host:port,host:port...>, C<id@noderef>, C<id>
58		65
59	A noderef is a string that either uniquely identifies a given node (for	66	A noderef is a string that either uniquely identifies a given node (for
60	private and hidden nodes), or contains a recipe on how to reach a given	67	private and hidden nodes), or contains a recipe on how to reach a given
61	node (for public nodes).	68	node (for public nodes).
62		69
…		…
68		75
69	=cut	76	=cut
70		77
71	package AnyEvent::MP;	78	package AnyEvent::MP;
72		79
73	use AnyEvent::MP::Util ();
74	use AnyEvent::MP::Node;	80	use AnyEvent::MP::Base;
75	use AnyEvent::MP::Transport;
76		81
77	use utf8;
78	use common::sense;	82	use common::sense;
79		83
80	use Carp ();	84	use Carp ();
81		85
82	use AE ();	86	use AE ();
83		87
84	use base "Exporter";	88	use base "Exporter";
85		89
86	our $VERSION = '0.0';	90	our $VERSION = '0.02';
87	our @EXPORT = qw(NODE $NODE $PORT snd rcv _any_);	91	our @EXPORT = qw(
		92	NODE $NODE *SELF node_of _any_
		93	become_slave become_public
		94	snd rcv mon kil reg psub
		95	port
		96	);
88		97
89	our $DEFAULT_SECRET;	98	our $SELF;
90	our $DEFAULT_PORT = "4040";
91		99
92	our $CONNECT_INTERVAL = 5; # new connect every 5s, at least	100	sub _self_die() {
93	our $CONNECT_TIMEOUT = 30; # includes handshake	101	my $msg = $@;
94		102	$msg =~ s/\n+$// unless ref $msg;
95	sub default_secret {	103	kil $SELF, die => $msg;
96	unless (defined $DEFAULT_SECRET) {
97	if (open my $fh, "<$ENV{HOME}/.aemp-secret") {
98	sysread $fh, $DEFAULT_SECRET, -s $fh;
99	} else {
100	$DEFAULT_SECRET = AnyEvent::MP::Util::nonce 32;
101	}
102	}
103
104	$DEFAULT_SECRET
105	}	104	}
106		105
107	=item NODE / $NODE	106	=item $thisnode = NODE / $NODE
108		107
109	The C<NODE ()> function and the C<$NODE> variable contain the noderef of	108	The C<NODE> function returns, and the C<$NODE> variable contains
110	the local node. The value is initialised by a call to C<become_public> or	109	the noderef of the local node. The value is initialised by a call
111	C<become_slave>, after which all local port identifiers become invalid.	110	to C<become_public> or C<become_slave>, after which all local port
		111	identifiers become invalid.
112		112
113	=cut	113	=item $noderef = node_of $portid
114		114
115	our $UNIQ = sprintf "%x.%x", $$, time; # per-process/node unique cookie	115	Extracts and returns the noderef from a portid or a noderef.
116	our $PUBLIC = 0;
117	our $NODE;
118	our $PORT;
119		116
120	our %NODE; # node id to transport mapping, or "undef", for local node	117	=item $SELF
121	our %PORT; # local ports
122	our %LISTENER; # local transports
123		118
124	sub NODE() { $NODE }	119	Contains the current port id while executing C<rcv> callbacks or C<psub>
		120	blocks.
125		121
126	{	122	=item SELF, %SELF, @SELF...
127	use POSIX ();
128	my $nodename = (POSIX::uname)[1];
129	$NODE = "$$\@$nodename";
130	}
131		123
132	sub _ANY_() { 1 }	124	Due to some quirks in how perl exports variables, it is impossible to
133	sub _any_() { \&_ANY_ }	125	just export C<$SELF>, all the symbols called C<SELF> are exported by this
134		126	module, but only C<$SELF> is currently used.
135	sub add_node {
136	my ($noderef) = @_;
137
138	return $NODE{$noderef}
139	if exists $NODE{$noderef};
140
141	for (split /,/, $noderef) {
142	return $NODE{$noderef} = $NODE{$_}
143	if exists $NODE{$_};
144	}
145
146	# for indirect sends, use a different class
147	my $node = new AnyEvent::MP::Node::Direct $noderef;
148
149	$NODE{$_} = $node
150	for $noderef, split /,/, $noderef;
151
152	$node
153	}
154		127
155	=item snd $portid, type => @data	128	=item snd $portid, type => @data
156		129
157	=item snd $portid, @msg	130	=item snd $portid, @msg
158		131
159	Send the given message to the given port ID, which can identify either a	132	Send the given message to the given port ID, which can identify either
160	local or a remote port.	133	a local or a remote port, and can be either a string or soemthignt hat
		134	stringifies a sa port ID (such as a port object :).
161		135
162	While the message can be about anything, it is highly recommended to use	136	While the message can be about anything, it is highly recommended to use a
163	a constant string as first element.	137	string as first element (a portid, or some word that indicates a request
		138	type etc.).
164		139
165	The message data effectively becomes read-only after a call to this	140	The message data effectively becomes read-only after a call to this
166	function: modifying any argument is not allowed and can cause many	141	function: modifying any argument is not allowed and can cause many
167	problems.	142	problems.
168		143
…		…
170	JSON is used, then only strings, numbers and arrays and hashes consisting	145	JSON is used, then only strings, numbers and arrays and hashes consisting
171	of those are allowed (no objects). When Storable is used, then anything	146	of those are allowed (no objects). When Storable is used, then anything
172	that Storable can serialise and deserialise is allowed, and for the local	147	that Storable can serialise and deserialise is allowed, and for the local
173	node, anything can be passed.	148	node, anything can be passed.
174		149
175	=cut	150	=item kil $portid[, @reason]
176		151
177	sub snd(@) {	152	Kill the specified port with the given C<@reason>.
		153
		154	If no C<@reason> is specified, then the port is killed "normally" (linked
		155	ports will not be kileld, or even notified).
		156
		157	Otherwise, linked ports get killed with the same reason (second form of
		158	C<mon>, see below).
		159
		160	Runtime errors while evaluating C<rcv> callbacks or inside C<psub> blocks
		161	will be reported as reason C<< die => $@ >>.
		162
		163	Transport/communication errors are reported as C<< transport_error =>
		164	$message >>.
		165
		166	=item $guard = mon $portid, $cb->(@reason)
		167
		168	=item $guard = mon $portid, $otherport
		169
		170	=item $guard = mon $portid, $otherport, @msg
		171
		172	Monitor the given port and do something when the port is killed.
		173
		174	In the first form, the callback is simply called with any number
		175	of C<@reason> elements (no @reason means that the port was deleted
		176	"normally"). Note also that I<< the callback B<must> never die >>, so use
		177	C<eval> if unsure.
		178
		179	In the second form, the other port will be C<kil>'ed with C<@reason>, iff
		180	a @reason was specified, i.e. on "normal" kils nothing happens, while
		181	under all other conditions, the other port is killed with the same reason.
		182
		183	In the last form, a message of the form C<@msg, @reason> will be C<snd>.
		184
		185	Example: call a given callback when C<$port> is killed.
		186
		187	mon $port, sub { warn "port died because of <@_>\n" };
		188
		189	Example: kill ourselves when C<$port> is killed abnormally.
		190
		191	mon $port, $self;
		192
		193	Example: send us a restart message another C<$port> is killed.
		194
		195	mon $port, $self => "restart";
		196
		197	=cut
		198
		199	sub mon {
178	my ($noderef, $port) = split /#/, shift, 2;	200	my ($noderef, $port, $cb) = ((split /#/, shift, 2), shift);
179		201
180	add_node $noderef	202	my $node = $NODE{$noderef} \|\| add_node $noderef;
181	unless exists $NODE{$noderef};
182		203
183	$NODE{$noderef}->send (["$port", [@_]]);	204	#TODO: ports must not be references
184	}	205	if (!ref $cb or "AnyEvent::MP::Port" eq ref $cb) {
		206	if (@_) {
		207	# send a kill info message
		208	my (@msg) = ($cb, @_);
		209	$cb = sub { snd @msg, @_ };
		210	} else {
		211	# simply kill other port
		212	my $port = $cb;
		213	$cb = sub { kil $port, @_ if @_ };
		214	}
		215	}
185		216
		217	$node->monitor ($port, $cb);
		218
		219	defined wantarray
		220	and AnyEvent::Util::guard { $node->unmonitor ($port, $cb) }
		221	}
		222
		223	=item $guard = mon_guard $port, $ref, $ref...
		224
		225	Monitors the given C<$port> and keeps the passed references. When the port
		226	is killed, the references will be freed.
		227
		228	Optionally returns a guard that will stop the monitoring.
		229
		230	This function is useful when you create e.g. timers or other watchers and
		231	want to free them when the port gets killed:
		232
		233	$port->rcv (start => sub {
		234	my $timer; $timer = mon_guard $port, AE::timer 1, 1, sub {
		235	undef $timer if 0.9 < rand;
		236	});
		237	});
		238
		239	=cut
		240
		241	sub mon_guard {
		242	my ($port, @refs) = @_;
		243
		244	mon $port, sub { 0 && @refs }
		245	}
		246
		247	=item $local_port = port
		248
		249	Create a new local port object that supports message matching.
		250
		251	=item $portid = port { my @msg = @_; $finished }
		252
		253	Creates a "mini port", that is, a very lightweight port without any
		254	pattern matching behind it, and returns its ID.
		255
		256	The block will be called for every message received on the port. When the
		257	callback returns a true value its job is considered "done" and the port
		258	will be destroyed. Otherwise it will stay alive.
		259
		260	The message will be passed as-is, no extra argument (i.e. no port id) will
		261	be passed to the callback.
		262
		263	If you need the local port id in the callback, this works nicely:
		264
		265	my $port; $port = miniport {
		266	snd $otherport, reply => $port;
		267	};
		268
		269	=cut
		270
		271	sub port(;&) {
		272	my $id = "$UNIQ." . $ID++;
		273	my $port = "$NODE#$id";
		274
		275	if (@_) {
		276	my $cb = shift;
		277	$PORT{$id} = sub {
		278	local $SELF = $port;
		279	eval {
		280	&$cb
		281	and kil $id;
		282	};
		283	_self_die if $@;
		284	};
		285	} else {
		286	my $self = bless {
		287	id => "$NODE#$id",
		288	}, "AnyEvent::MP::Port";
		289
		290	$PORT_DATA{$id} = $self;
		291	$PORT{$id} = sub {
		292	local $SELF = $port;
		293
		294	eval {
		295	for (@{ $self->{rc0}{$_[0]} }) {
		296	$_ && &{$_->[0]}
		297	&& undef $_;
		298	}
		299
		300	for (@{ $self->{rcv}{$_[0]} }) {
		301	$_ && [@_[1 .. @{$_->[1]}]] ~~ $_->[1]
		302	&& &{$_->[0]}
		303	&& undef $_;
		304	}
		305
		306	for (@{ $self->{any} }) {
		307	$_ && [@_[0 .. $#{$_->[1]}]] ~~ $_->[1]
		308	&& &{$_->[0]}
		309	&& undef $_;
		310	}
		311	};
		312	_self_die if $@;
		313	};
		314	}
		315
		316	$port
		317	}
		318
		319	=item reg $portid, $name
		320
		321	Registers the given port under the name C<$name>. If the name already
		322	exists it is replaced.
		323
		324	A port can only be registered under one well known name.
		325
		326	A port automatically becomes unregistered when it is killed.
		327
		328	=cut
		329
		330	sub reg(@) {
		331	my ($portid, $name) = @_;
		332
		333	$REG{$name} = $portid;
		334	}
		335
186	=item rcv $portid, type => $callback->(@msg)	336	=item rcv $portid, tagstring => $callback->(@msg), ...
187		337
188	=item rcv $portid, $smartmatch => $callback->(@msg)	338	=item rcv $portid, $smartmatch => $callback->(@msg), ...
189		339
190	=item rcv $portid, [$smartmatch...] => $callback->(@msg)	340	=item rcv $portid, [$smartmatch...] => $callback->(@msg), ...
191		341
192	Register a callback on the port identified by C<$portid>, which I<must> be	342	Register callbacks to be called on matching messages on the given port.
193	a local port.
194		343
195	The callback has to return a true value when its work is done, after	344	The callback has to return a true value when its work is done, after
196	which is will be removed, or a false value in which case it will stay	345	which is will be removed, or a false value in which case it will stay
197	registered.	346	registered.
198		347
		348	The global C<$SELF> (exported by this module) contains C<$portid> while
		349	executing the callback.
		350
		351	Runtime errors wdurign callback execution will result in the port being
		352	C<kil>ed.
		353
199	If the match is an array reference, then it will be matched against the	354	If the match is an array reference, then it will be matched against the
200	first elements of the message, otherwise only the first element is being	355	first elements of the message, otherwise only the first element is being
201	matched.	356	matched.
202		357
203	Any element in the match that is specified as C<_any_> (a function	358	Any element in the match that is specified as C<_any_> (a function
…		…
208	also the most efficient match (by far).	363	also the most efficient match (by far).
209		364
210	=cut	365	=cut
211		366
212	sub rcv($@) {	367	sub rcv($@) {
213	my ($port, $match, $cb) = @_;
214
215	my $port = $PORT{$port}
216	or do {
217	my ($noderef, $lport) = split /#/, $port;	368	my ($noderef, $port) = split /#/, shift, 2;
218	"AnyEvent::MP::Node::Self" eq ref $NODE{$noderef}	369
		370	($NODE{$noderef} \|\| add_node $noderef) == $NODE{""}
219	or Carp::croak "$port: can only rcv on local ports";	371	or Carp::croak "$noderef#$port: rcv can only be called on local ports, caught";
220		372
221	$PORT{$lport}	373	my $self = $PORT_DATA{$port}
222	or Carp::croak "$port: port does not exist";	374	or Carp::croak "$noderef#$port: rcv can only be called on message matching ports, caught";
223
224	$PORT{$port} = $PORT{$lport} # also return
225	};
226		375
		376	"AnyEvent::MP::Port" eq ref $self
		377	or Carp::croak "$noderef#$port: rcv can only be called on message matching ports, caught";
		378
		379	while (@_) {
		380	my ($match, $cb) = splice @_, 0, 2;
		381
227	if (!ref $match) {	382	if (!ref $match) {
228	push @{ $port->{rc0}{$match} }, [$cb];	383	push @{ $self->{rc0}{$match} }, [$cb];
229	} elsif (("ARRAY" eq ref $match && !ref $match->[0])) {	384	} elsif (("ARRAY" eq ref $match && !ref $match->[0])) {
230	my ($type, @match) = @$match;	385	my ($type, @match) = @$match;
231	@match	386	@match
232	? push @{ $port->{rcv}{$match->[0]} }, [$cb, \@match]	387	? push @{ $self->{rcv}{$match->[0]} }, [$cb, \@match]
233	: push @{ $port->{rc0}{$match->[0]} }, [$cb];	388	: push @{ $self->{rc0}{$match->[0]} }, [$cb];
234	} else {
235	push @{ $port->{any} }, [$cb, $match];
236	}
237	}
238
239	sub _inject {
240	my ($port, $msg) = @{+shift};
241
242	$port = $PORT{$port}
243	or return;
244
245	@_ = @$msg;
246
247	for (@{ $port->{rc0}{$msg->[0]} }) {
248	$_ && &{$_->[0]}
249	&& undef $_;
250	}
251
252	for (@{ $port->{rcv}{$msg->[0]} }) {
253	$_ && [@_[1..$#{$_->[1]}]] ~~ $_->[1]
254	&& &{$_->[0]}
255	&& undef $_;
256	}
257
258	for (@{ $port->{any} }) {
259	$_ && [@_[0..$#{$_->[1]}]] ~~ $_->[1]
260	&& &{$_->[0]}
261	&& undef $_;
262	}
263	}
264
265	sub normalise_noderef($) {
266	my ($noderef) = @_;
267
268	my $cv = AE::cv;
269	my @res;
270
271	$cv->begin (sub {
272	my %seen;
273	my @refs;
274	for (sort { $a->[0] <=> $b->[0] } @res) {
275	push @refs, $_->[1] unless $seen{$_->[1]}++
276	}
277	shift->send (join ",", @refs);
278	});
279
280	$noderef = $DEFAULT_PORT unless length $noderef;
281
282	my $idx;
283	for my $t (split /,/, $noderef) {
284	my $pri = ++$idx;
285
286	#TODO: this should be outside normalise_noderef and in become_public
287	if ($t =~ /^\d*$/) {
288	my $nodename = (POSIX::uname)[1];
289
290	$cv->begin;
291	AnyEvent::Socket::resolve_sockaddr $nodename, $t \|\| "aemp=$DEFAULT_PORT", "tcp", 0, undef, sub {
292	for (@_) {
293	my ($service, $host) = AnyEvent::Socket::unpack_sockaddr $_->[3];
294	push @res, [
295	$pri += 1e-5,
296	AnyEvent::Socket::format_hostport AnyEvent::Socket::format_address $host, $service
297	];
298	}
299	$cv->end;
300	};
301
302	# my (undef, undef, undef, undef, @ipv4) = gethostbyname $nodename;
303	#
304	# for (@ipv4) {
305	# push @res, [
306	# $pri,
307	# AnyEvent::Socket::format_hostport AnyEvent::Socket::format_address $_, $t \|\| $DEFAULT_PORT,
308	# ];
309	# }
310	} else {	389	} else {
311	my ($host, $port) = AnyEvent::Socket::parse_hostport $t, "aemp=$DEFAULT_PORT"	390	push @{ $self->{any} }, [$cb, $match];
312	or Carp::croak "$t: unparsable transport descriptor";
313
314	$cv->begin;
315	AnyEvent::Socket::resolve_sockaddr $host, $port, "tcp", 0, undef, sub {
316	for (@_) {
317	my ($service, $host) = AnyEvent::Socket::unpack_sockaddr $_->[3];
318	push @res, [
319	$pri += 1e-5,
320	AnyEvent::Socket::format_hostport AnyEvent::Socket::format_address $host, $service
321	];
322	}
323	$cv->end;
324	}
325	}	391	}
326	}	392	}
327
328	$cv->end;
329
330	$cv
331	}	393	}
332		394
333	sub become_public {	395	=item $closure = psub { BLOCK }
334	return if $PUBLIC;
335		396
336	my $noderef = join ",", ref $_[0] ? @{+shift} : shift;	397	Remembers C<$SELF> and creates a closure out of the BLOCK. When the
337	my @args = @_;	398	closure is executed, sets up the environment in the same way as in C<rcv>
		399	callbacks, i.e. runtime errors will cause the port to get C<kil>ed.
338		400
339	$NODE = (normalise_noderef $noderef)->recv;	401	This is useful when you register callbacks from C<rcv> callbacks:
340		402
341	for my $t (split /,/, $NODE) {	403	rcv delayed_reply => sub {
342	$NODE{$t} = $NODE{""};	404	my ($delay, @reply) = @_;
343		405	my $timer = AE::timer $delay, 0, psub {
344	my ($host, $port) = AnyEvent::Socket::parse_hostport $t;	406	snd @reply, $SELF;
345
346	$LISTENER{$t} = AnyEvent::MP::Transport::mp_server $host, $port,
347	@args,
348	on_error => sub {
349	die "on_error<@_>\n";#d#
350	},
351	on_connect => sub {
352	my ($tp) = @_;
353
354	$NODE{$tp->{remote_id}} = $_[0];
355	},
356	sub {
357	my ($tp) = @_;
358
359	$NODE{"$tp->{peerhost}:$tp->{peerport}"} = $tp;
360	},
361	;	407	};
		408	};
		409
		410	=cut
		411
		412	sub psub(&) {
		413	my $cb = shift;
		414
		415	my $port = $SELF
		416	or Carp::croak "psub can only be called from within rcv or psub callbacks, not";
		417
		418	sub {
		419	local $SELF = $port;
		420
		421	if (wantarray) {
		422	my @res = eval { &$cb };
		423	_self_die if $@;
		424	@res
		425	} else {
		426	my $res = eval { &$cb };
		427	_self_die if $@;
		428	$res
		429	}
362	}	430	}
363
364	$PUBLIC = 1;
365	}	431	}
366		432
367	=back	433	=back
368		434
		435	=head1 FUNCTIONS FOR NODES
		436
		437	=over 4
		438
		439	=item become_public endpoint...
		440
		441	Tells the node to become a public node, i.e. reachable from other nodes.
		442
		443	If no arguments are given, or the first argument is C<undef>, then
		444	AnyEvent::MP tries to bind on port C<4040> on all IP addresses that the
		445	local nodename resolves to.
		446
		447	Otherwise the first argument must be an array-reference with transport
		448	endpoints ("ip:port", "hostname:port") or port numbers (in which case the
		449	local nodename is used as hostname). The endpoints are all resolved and
		450	will become the node reference.
		451
		452	=cut
		453
		454	=back
		455
369	=head1 NODE MESSAGES	456	=head1 NODE MESSAGES
370		457
371	Nodes understand the following messages sent to them:	458	Nodes understand the following messages sent to them. Many of them take
		459	arguments called C<@reply>, which will simply be used to compose a reply
		460	message - C<$reply[0]> is the port to reply to, C<$reply[1]> the type and
		461	the remaining arguments are simply the message data.
372		462
373	=over 4	463	=over 4
374		464
375	=cut	465	=cut
376		466
377	#############################################################################	467	=item lookup => $name, @reply
378	# self node code
379		468
380	sub _new_port($) {	469	Replies with the port ID of the specified well-known port, or C<undef>.
381	my ($name) = @_;
382		470
383	my ($noderef, $portname) = split /#/, $name;	471	=item devnull => ...
384		472
385	$PORT{$name} =	473	Generic data sink/CPU heat conversion.
386	$PORT{$portname} = {
387	names => [$name, $portname],
388	};
389	}
390
391	$NODE{""} = new AnyEvent::MP::Node::Self noderef => $NODE;
392	_new_port "";
393		474
394	=item relay => $port, @msg	475	=item relay => $port, @msg
395		476
396	Simply forwards the message to the given port.	477	Simply forwards the message to the given port.
397		478
398	=cut
399
400	rcv "", relay => \&snd;
401
402	=item eval => $string[ @reply]	479	=item eval => $string[ @reply]
403		480
404	Evaluates the given string. If C<@reply> is given, then a message of the	481	Evaluates the given string. If C<@reply> is given, then a message of the
405	form C<@reply, $@, @evalres> is sent (C<$reply[0]> is the port to reply to).	482	form C<@reply, $@, @evalres> is sent.
406		483
407	=cut	484	Example: crash another node.
408		485
409	rcv "", eval => sub {	486	snd $othernode, eval => "exit";
410	my (undef, $string, @reply) = @_;
411	my @res = eval $string;
412	snd @reply, "$@", @res if @reply;
413	};
414		487
415	=item time => @reply	488	=item time => @reply
416		489
417	Replies the the current node time to C<@reply>.	490	Replies the the current node time to C<@reply>.
418		491
419	=cut	492	Example: tell the current node to send the current time to C<$myport> in a
		493	C<timereply> message.
420		494
421	rcv "", time => sub { shift; snd @_, AE::time };	495	snd $NODE, time => $myport, timereply => 1, 2;
		496	# => snd $myport, timereply => 1, 2, <time>
422		497
423	=back	498	=back
424		499
425	=head1 SEE ALSO	500	=head1 SEE ALSO
426		501

Diff Legend

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

Comparing AnyEvent-MP/MP.pm (file contents): Revision 1.4 by root, Sat Aug 1 07:36:30 2009 UTC vs. Revision 1.22 by root, Tue Aug 4 18:33:30 2009 UTC

Diff Legend

Comparing AnyEvent-MP/MP.pm (file contents):
Revision 1.4 by root, Sat Aug 1 07:36:30 2009 UTC vs.
Revision 1.22 by root, Tue Aug 4 18:33:30 2009 UTC