#!/usr/bin/perl
# A wrapper which runs some Perl script or command as a service
BEGIN { open(ERR, ">c:/temp/win32.err");
print ERR "Starting ..\n"; };
use Win32::Daemon;
# Tell the OS to start processing the service...
Win32::Daemon::StartService();
# Note: Added for convenience: The numeric codes for the Windows
# Service states:
#
# SERVICE_NOT_READY = 0
# SERVICE_STOPPED = 1
# SERVICE_START_PENDING = 2
# SERVICE_STOP_PENDING = 3
# SERVICE_RUNNING = 4
# SERVICE_CONTINUE_PENDING = 5
# SERVICE_PAUSE_PENDING = 6
# SERVICE_PAUSED = 7
# Wait until the service manager is ready for us to continue...
while( SERVICE_START_PENDING != Win32::Daemon::State() ) {
sleep( 1 );
}
# Now let the service manager know that we are running...
# This needs to be here, not after the client process exits,
# otherwise the service will be in SERVICE_START_PENDING when
# it is up.
Win32::Daemon::State( SERVICE_RUNNING );
# Added (CRH): We need to replace the forward slashes with double
# backslashes only in the first argument to the function. For some
# reason the service manager expects double backslashes.
$argone=shift @ARGV;
$argone=~s/\//\\\\/g;
unshift @ARGV, $argone;
# Start the program in a sub-process
%before = map { $_, 1 } &get_procs();
$pid = fork();
if (!$pid) {
system(@ARGV);
exit(1);
}
$pid = -$pid;
print ERR "pid = $pid\n";
@after = &get_procs();
@new = grep { !$before{$_} } @after;
# Wait for messages
while(1) {
sleep(5);
if (Win32::Daemon::State() == SERVICE_STOP_PENDING ||
Win32::Daemon::State() == SERVICE_CONTROL_SHUTDOWN) {
# Need to kill it
foreach $p (@new) {
print ERR "Killing process $p\n";
system("process.exe -k $p");
}
last;
}
}
# Tell the OS that the service is terminating...
Win32::Daemon::StopService();
# Returns a list of process IDs
sub get_procs
{
local @rv;
open(PROC, "process.exe |");
while(<PROC>) {
if (/^\s*(\S+)\s+(\d+)\s+(\d+)/) {
push(@rv, $2);
}
}
close(PROC);
return @rv;
}
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