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|
#!/usr/bin/perl
# vim: ts=2 sw=2 filetype=perl expandtab
use warnings;
use strict;
sub POE::Kernel::CATCH_EXCEPTIONS () { 0 }
sub POE::Kernel::USE_SIGCHLD () { 0 }
sub POE::Kernel::USE_SIGNAL_PIPE () { 0 }
sub POE::Kernel::ASSERT_DEFAULT () { 1 }
sub POE::Kernel::TRACE_DEFAULT () { 0 }
use POE;
use POE::Wheel::Run;
use Test::More;
sub DEBUG () { 0 }
my $child_process_limit = 3;
my $seconds_children_sleep = 1;
# Each child process:
# child sent done
# child flushed
# child exited
# Each spawn
# All children exited
# Whole program
# Sane exit
my $test_count = 3 * $child_process_limit + 1 + 1;
plan tests => $test_count;
SKIP: {
skip("$^O handles fork/call poorly", $test_count) if (
$^O eq "MSWin32" and not $ENV{POE_DANTIC}
);
diag "This test can take up to ", $seconds_children_sleep*10, " seconds";
Work->spawn( $child_process_limit, $seconds_children_sleep );
$poe_kernel->run;
pass( "Sane exit" );
}
############################################################################
package Work;
use strict;
use warnings;
use POE;
use Test::More;
BEGIN {
*DEBUG = \&::DEBUG;
}
sub spawn {
my( $package, $count, $sleep ) = @_;
POE::Session->create(
inline_states => {
_start => sub {
my ($heap) = @_[HEAP, ARG0..$#_];
$poe_kernel->sig(CHLD => 'sig_CHLD');
foreach my $n (1 .. $count) {
DEBUG and diag "$$: Launch child $n";
my $w = POE::Wheel::Run->new(
Program => \&spawn_child,
ProgramArgs => [ $sleep ],
StdoutEvent => 'chld_stdout',
StderrEvent => 'chld_stderr',
CloseEvent => 'chld_close'
);
$heap->{PID2W}{$w->PID} = {ID => $w->ID, N => $n, flushed=>0};
$heap->{W}{$w->ID} = $w;
}
$heap->{TID} = $poe_kernel->delay_set(timeout => $sleep*10);
},
chld_stdout => sub {
my ($heap, $line, $wid) = @_[HEAP, ARG0, ARG1];
my $wheel = $heap->{W}{$wid};
die "Unknown wheel $wid" unless $wheel;
$line =~ s/\s+//g;
is( $line, 'DONE', "stdout from $wid" );
if( $line eq 'DONE' ) {
my $data = $heap->{PID2W}{ $wheel->PID };
$data->{flushed} = 1;
}
},
chld_stderr => sub {
my ($heap, $line, $wid) = @_[HEAP, ARG0, ARG1];
my $wheel = $heap->{W}{$wid};
die "Unknown wheel $wid" unless $wheel;
if (DEBUG) {
diag "CHILD " . $wheel->PID . " STDERR: $line";
}
else {
fail "stderr from $wid: $line";
}
},
say_goodbye => sub {
DEBUG and diag "$$: saying goodbye";
foreach my $wheel (values %{$_[HEAP]{W}}) {
$wheel->put("die\n");
}
DEBUG and diag "$$: said my goodbyes";
},
timeout => sub {
fail "Timed out waiting for children to exit";
$poe_kernel->stop();
},
sig_CHLD => sub {
my ($heap, $signal, $pid) = @_[HEAP, ARG0, ARG1];
DEBUG and diag "$$: CHLD $pid";
my $data = $heap->{PID2W}{$pid};
die "Unknown wheel PID=$pid" unless defined $data;
close_on( 'CHLD', $heap, $data->{ID} );
},
chld_close => sub {
my ($heap, $wid) = @_[HEAP, ARG0];
DEBUG and diag "$$: close $wid";
close_on( 'close', $heap, $wid );
},
_stop => sub { }, # Pacify ASSERT_DEFAULT.
}
);
}
sub close_on {
my( $why, $heap, $wid ) = @_;
my $wheel = $heap->{W}{$wid};
die "Unknown wheel $wid" unless $wheel;
my $data = $heap->{PID2W}{ $wheel->PID };
$data->{$why}++;
return unless $data->{CHLD} and $data->{close};
is( $data->{flushed}, 1, "expected child flush" );
delete $heap->{PID2W}{$wheel->PID};
delete $heap->{W}{$data->{ID}};
pass("Child $data->{ID} exit detected.");
unless (keys %{$heap->{W}}) {
pass "all children have exited";
$poe_kernel->alarm_remove(delete $heap->{TID});
}
}
sub spawn_child {
my( $sleep ) = @_;
#close STDERR;
#open STDERR, ">", "child-err.$$";
DEBUG and diag "$$: child sleep=$sleep";
POE::Kernel->stop;
POE::Session->create(
inline_states => {
_start => sub {
$_[KERNEL]->delay( done => $sleep );
},
_stop => sub {
DEBUG and diag "$$: child _stop";
},
done => sub {
DEBUG and diag "$$: child done";
print "DONE\n";
},
}
);
POE::Kernel->run;
}
|
