… | |
… | |
30 | rcv $port, pong => sub { warn "pong received\n" }; |
30 | rcv $port, pong => sub { warn "pong received\n" }; |
31 | |
31 | |
32 | # create a port on another node |
32 | # create a port on another node |
33 | my $port = spawn $node, $initfunc, @initdata; |
33 | my $port = spawn $node, $initfunc, @initdata; |
34 | |
34 | |
|
|
35 | # destroy a prot again |
|
|
36 | kil $port; # "normal" kill |
|
|
37 | kil $port, my_error => "everything is broken"; # error kill |
|
|
38 | |
35 | # monitoring |
39 | # monitoring |
36 | mon $localport, $cb->(@msg) # callback is invoked on death |
40 | mon $localport, $cb->(@msg) # callback is invoked on death |
37 | mon $localport, $otherport # kill otherport on abnormal death |
41 | mon $localport, $otherport # kill otherport on abnormal death |
38 | mon $localport, $otherport, @msg # send message on death |
42 | mon $localport, $otherport, @msg # send message on death |
|
|
43 | |
|
|
44 | # temporarily execute code in port context |
|
|
45 | peval $port, sub { die "kill the port!" }; |
|
|
46 | |
|
|
47 | # execute callbacks in $SELF port context |
|
|
48 | my $timer = AE::timer 1, 0, psub { |
|
|
49 | die "kill the port, delayed"; |
|
|
50 | }; |
39 | |
51 | |
40 | =head1 CURRENT STATUS |
52 | =head1 CURRENT STATUS |
41 | |
53 | |
42 | bin/aemp - stable. |
54 | bin/aemp - stable. |
43 | AnyEvent::MP - stable API, should work. |
55 | AnyEvent::MP - stable API, should work. |
… | |
… | |
148 | our $VERSION = 1.21; |
160 | our $VERSION = 1.21; |
149 | |
161 | |
150 | our @EXPORT = qw( |
162 | our @EXPORT = qw( |
151 | NODE $NODE *SELF node_of after |
163 | NODE $NODE *SELF node_of after |
152 | configure |
164 | configure |
153 | snd rcv mon mon_guard kil psub spawn cal |
165 | snd rcv mon mon_guard kil psub peval spawn cal |
154 | port |
166 | port |
155 | ); |
167 | ); |
156 | |
168 | |
157 | our $SELF; |
169 | our $SELF; |
158 | |
170 | |
… | |
… | |
436 | } |
448 | } |
437 | |
449 | |
438 | $port |
450 | $port |
439 | } |
451 | } |
440 | |
452 | |
|
|
453 | =item peval $port, $coderef[, @args] |
|
|
454 | |
|
|
455 | Evaluates the given C<$codref> within the contetx of C<$port>, that is, |
|
|
456 | when the code throews an exception the C<$port> will be killed. |
|
|
457 | |
|
|
458 | Any remaining args will be passed to the callback. Any return values will |
|
|
459 | be returned to the caller. |
|
|
460 | |
|
|
461 | This is useful when you temporarily want to execute code in the context of |
|
|
462 | a port. |
|
|
463 | |
|
|
464 | Example: create a port and run some initialisation code in it's context. |
|
|
465 | |
|
|
466 | my $port = port { ... }; |
|
|
467 | |
|
|
468 | peval $port, sub { |
|
|
469 | init |
|
|
470 | or die "unable to init"; |
|
|
471 | }; |
|
|
472 | |
|
|
473 | =cut |
|
|
474 | |
|
|
475 | sub peval($$) { |
|
|
476 | local $SELF = shift; |
|
|
477 | my $cb = shift; |
|
|
478 | |
|
|
479 | if (wantarray) { |
|
|
480 | my @res = eval { &$cb }; |
|
|
481 | _self_die if $@; |
|
|
482 | @res |
|
|
483 | } else { |
|
|
484 | my $res = eval { &$cb }; |
|
|
485 | _self_die if $@; |
|
|
486 | $res |
|
|
487 | } |
|
|
488 | } |
|
|
489 | |
441 | =item $closure = psub { BLOCK } |
490 | =item $closure = psub { BLOCK } |
442 | |
491 | |
443 | Remembers C<$SELF> and creates a closure out of the BLOCK. When the |
492 | Remembers C<$SELF> and creates a closure out of the BLOCK. When the |
444 | closure is executed, sets up the environment in the same way as in C<rcv> |
493 | closure is executed, sets up the environment in the same way as in C<rcv> |
445 | callbacks, i.e. runtime errors will cause the port to get C<kil>ed. |
494 | callbacks, i.e. runtime errors will cause the port to get C<kil>ed. |
|
|
495 | |
|
|
496 | The effect is basically as if it returned C<< sub { peval $SELF, sub { |
|
|
497 | BLOCK } } >>. |
446 | |
498 | |
447 | This is useful when you register callbacks from C<rcv> callbacks: |
499 | This is useful when you register callbacks from C<rcv> callbacks: |
448 | |
500 | |
449 | rcv delayed_reply => sub { |
501 | rcv delayed_reply => sub { |
450 | my ($delay, @reply) = @_; |
502 | my ($delay, @reply) = @_; |