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package Plack::Handler::Starlight; |
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=head1 NAME |
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Plack::Handler::Starlight - Plack adapter for Starlight |
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=head1 SYNOPSIS |
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=for markdown ```perl |
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use Plack::Loader; |
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my $loader = Plack::Loader->load('Starlight', port => 80); |
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$loader->run(sub { [200, ['Content-Type', 'text/plain'], ['PSGI app']] }); |
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=for markdown ``` |
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=head1 DESCRIPTION |
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This is a stub module that allows Starlight to be loaded up under L |
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and other L tools. Set C<$ENV{PLACK_SERVER}> to C<'Starlight'> or use |
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the -s parameter to L to use Starlight under L. |
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See L and L (lower case) for available command line |
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options. |
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=cut |
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use strict; |
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use warnings; |
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690
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17275
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our $VERSION = '0.0502'; |
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use base qw(Starlight::Server); |
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79386
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use Config (); |
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use English '-no_match_vars'; |
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use Fcntl (); |
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765
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1594
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use File::Spec; |
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3633
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use POSIX (); |
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1596
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use Plack::Util; |
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6701
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43
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87
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use constant HAS_WIN32_PROCESS => $^O eq 'cygwin' && eval { require Win32::Process; 1; } && 1; |
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7781
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use constant DEBUG => $ENV{PERL_STARLIGHT_DEBUG}; |
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94234
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47
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sub new { |
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86
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86
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0
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4967
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my ($class, %args) = @_; |
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50
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# setup before instantiation |
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86
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172
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my $max_workers = 10; |
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86
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269
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for (qw(max_workers workers)) { |
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$max_workers = delete $args{$_} |
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172
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100
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738
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if defined $args{$_}; |
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} |
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57
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# instantiate and set the variables |
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86
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932
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my $self = $class->SUPER::new(%args); |
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86
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50
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343
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if ($^O eq 'MSWin32') { |
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61
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# forks are emulated |
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0
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0
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$self->{is_multithread} = Plack::Util::TRUE; |
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0
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0
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$self->{is_multiprocess} = Plack::Util::FALSE; |
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} else { |
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66
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# real forks |
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86
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810
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$self->{is_multithread} = Plack::Util::FALSE; |
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86
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$self->{is_multiprocess} = Plack::Util::TRUE; |
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} |
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86
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354
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$self->{max_workers} = $max_workers; |
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86
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1337
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$self->{main_process} = $$; |
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330
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$self->{processes} = +{}; |
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86
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$self->{_kill_stalled_processes_delay} = 10; |
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86
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925
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$self; |
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} |
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80
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sub run { |
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85
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85
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0
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3880
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my ($self, $app) = @_; |
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83
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85
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1725
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$self->_daemonize(); |
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85
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85
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181
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warn "*** starting main process $$" if DEBUG; |
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85
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997
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$self->setup_listener(); |
87
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88
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85
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1512
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$self->_setup_privileges(); |
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90
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85
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2451
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local $SIG{PIPE} = 'IGNORE'; |
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92
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local $SIG{CHLD} = sub { |
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349
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349
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2435
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my ($sig) = @_; |
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349
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610
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warn "*** SIG$sig received in process $$" if DEBUG; |
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349
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13956
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local ($!, $?); |
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349
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14664
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my $pid = waitpid(-1, &POSIX::WNOHANG); ## no critic |
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349
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100
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1995
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return if $pid == -1; |
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344
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121703
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delete $self->{processes}->{$pid}; |
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85
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2195
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}; |
100
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101
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85
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351
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my $sigint = $self->{_sigint}; |
102
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85
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50
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602
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my $sigterm = $^O eq 'MSWin32' ? 'KILL' : 'TERM'; |
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104
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85
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50
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350
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if ($self->{max_workers} != 0) { |
105
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local $SIG{$sigint} = local $SIG{TERM} = sub { |
106
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7
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7
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369
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my ($sig) = @_; |
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7
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162
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warn "*** SIG$sig received in process $$" if DEBUG; |
108
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7
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374
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$self->{term_received}++; |
109
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85
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2673
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}; |
110
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85
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453
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for (my $loop = 0; not $self->{term_received}; $loop++) { |
111
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954
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5849
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warn "*** running ", scalar keys %{ $self->{processes} }, " processes" if DEBUG; |
112
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954
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50
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50
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8549
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if ($loop >= $self->{_kill_stalled_processes_delay} / ($self->{main_process_delay} || 1)) { |
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0
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0
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$loop = 0; |
114
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115
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# check stalled processes once per n sec |
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0
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0
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foreach my $pid (keys %{ $self->{processes} }) { |
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0
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0
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117
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0
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0
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0
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delete $self->{processes}->{$pid} if not kill 0, $pid; |
118
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} |
119
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} |
120
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954
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2608
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foreach my $n (1 + scalar keys %{ $self->{processes} } .. $self->{max_workers}) { |
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954
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9430
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121
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849
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4622
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$self->_create_process($app); |
122
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771
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16409
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$self->_sleep($self->{spawn_interval}); |
123
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} |
124
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125
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# slow down main process |
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876
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9902
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$self->_sleep($self->{main_process_delay}); |
127
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} |
128
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7
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50
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170
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if (my @pids = keys %{ $self->{processes} }) { |
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7
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398
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129
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7
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125
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warn "*** stopping ", scalar @pids, " processes" if DEBUG; |
130
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7
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158
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foreach my $pid (@pids) { |
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55
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315
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warn "*** stopping process $pid" if DEBUG; |
132
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55
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2813
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kill $sigterm, $pid; |
133
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} |
134
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7
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91
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if (HAS_WIN32_PROCESS) { |
135
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$self->_sleep(1); |
136
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foreach my $pid (keys %{ $self->{processes} }) { |
137
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my $winpid = Cygwin::pid_to_winpid($pid) or next; |
138
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warn "*** terminating process $pid winpid $winpid" if DEBUG; |
139
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Win32::Process::KillProcess($winpid, 0); |
140
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} |
141
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} |
142
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7
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209
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$self->_sleep(1); |
143
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7
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267
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foreach my $pid (keys %{ $self->{processes} }) { |
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7
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99
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144
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48
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131
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warn "*** waiting for process ", $pid if DEBUG; |
145
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48
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40934
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waitpid $pid, 0; |
146
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} |
147
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} |
148
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7
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50
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50
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316
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if ($^O eq 'cygwin' and not HAS_WIN32_PROCESS) { |
149
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0
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0
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warn "Win32::Process is not installed. Some processes might be still active.\n"; |
150
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} |
151
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7
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11481
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warn "*** stopping main process $$" if DEBUG; |
152
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7
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1251
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exit 0; |
153
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} else { |
154
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155
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# run directly, mainly for debugging |
156
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local $SIG{$sigint} = local $SIG{TERM} = sub { |
157
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0
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0
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my ($sig) = @_; |
158
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0
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warn "*** SIG$sig received in process $$" if DEBUG; |
159
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0
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exit 0; |
160
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0
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}; |
161
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0
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while (1) { |
162
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0
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$self->accept_loop($app, $self->_calc_reqs_per_child()); |
163
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0
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$self->_sleep($self->{spawn_interval}); |
164
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} |
165
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} |
166
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} |
167
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168
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1; |
169
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170
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__END__ |