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Re: win32::daemon memory leak

by tbsky (Novice)
on Dec 23, 2015 at 08:35 UTC ( [id://1151008] : note . print w/replies, xml ) Need Help??

in reply to win32::daemon memory leak


I try to rewrite the code with old style without callback. according to the win32::daemon document, this kind of style is obsolete and we should use callback.

but the old style won't leak memory. code below. I named the service "memory-noleak".

#!/usr/bin/perl use strict; use warnings; use Win32::Daemon; use Getopt::Long; my @cmd = @ARGV; my ($opt_g,$opt_h,$opt_i,$opt_r); if (! GetOptions('g=s' =>\$opt_g, 'h' => \$opt_h, 'i' => \$opt_i, 'r' +=>\$opt_r)){ print "command line wrong !!!\n"; exit(1); } if ($opt_h or ! @cmd){ print <<EOF; Usage: memory-noleak [options] test perl service memory-noleak -i install memory-noleak Service -r remove memory-noleak Service -h help message -g (internal use only) EOF exit(0); } # get program name our $fn = Win32::GetFullPathName($0); our ($cwd,$bn,$ext) = ($fn =~ /^(.*\\)(.*)\.(.*)$/ )[0..2]; if ($opt_i){ # install service # Determine service's path to executable based on file extension my ($path,$parameters); if ($ext eq "pl"){ # Source perl script - invoke perl interpreter $path = "\"$^X\""; # The command includes the -g go switch needed to enter servic +e mode $parameters = "\"$fn\" -g go"; }elsif ($ext eq "exe"){ # Compiled perl script - invoke the compiled script $path = "\"$fn\""; $parameters = "-g go"; }else{ # Invalid file type? print "Can not install service for $fn,file extension $ext not + supported\n"; exit(1); } # Populate the service configuration hash my %srv_config = ( name => "memory-noleak", display => "memory-noleak", path => $path, description => "memory-noleak", parameters => $parameters, service_type => SERVICE_WIN32_OWN_PROCESS, start_type => SERVICE_AUTO_START ); # Install the service if (Win32::Daemon::CreateService(\%srv_config)){ print "memory-noleak Service installed successfully\n"; }else{ print "Failed to install service: $!\n"; exit(1); } }elsif ($opt_r){ # remove service if (Win32::Daemon::DeleteService("memory-noleak")){ print "memory-noleak Service uninstalled successfully\n"; }else{ print "Failed to uninstall service: $!\n"; exit(1); } }elsif ($opt_g eq "go"){ my $SERVICE_SLEEP_TIME = 30; my $PrevState = SERVICE_START_PENDING; Win32::Daemon::StartService(); while( SERVICE_STOPPED != ( my $State = Win32::Daemon::State())){ if( SERVICE_START_PENDING == $State ){ # Initialization code Win32::Daemon::State( SERVICE_RUNNING ); $PrevState = SERVICE_RUNNING; }elsif( SERVICE_STOP_PENDING == $State ){ # "Stopping..."; Win32::Daemon::State( SERVICE_STOPPED ); $PrevState = SERVICE_STOPPED; next; }elsif( SERVICE_RUNNING == $State ){ }else{ Win32::Daemon::State( $PrevState ); } Win32::Sleep( $SERVICE_SLEEP_TIME ); } Win32::Daemon::StopService(); exit(0); }