On Aug 6, 2009, at 10:53 PM, Anjo Krank wrote:
Am 07.08.2009 um 07:45 schrieb Chuck Hill:
Yes, I know how to get a thread dump. There are many tools. The
question is why the simple, basic kill -QUIT is not working for
deployed apps on Leopard.
Works for me (wonder wotaskd, custom launchd script). Dunno if the
launch script influences it.
This made me go back and look at this again. It appears there has
been a change in where the JVM sends the thread dump. It previously
went to std err, it now goes to std out. So... if you look in the
right file :-) things still work as they did.
Cheers,
Chuck
Cheers, Anjo
s11:~ root# cat /Library/LaunchDaemons/ch.aximus.wotaskd.plist
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple Computer//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd
">
<plist version="1.0">
<dict>
<key>Disabled</key>
<true/>
<key>KeepAlive</key>
<true/>
<key>Label</key>
<string>ch.aximus.wotaskd</string>
<key>Program</key>
<string>/usr/local/bin/startWOtaskd.rb</string>
<key>ProgramArguments</key>
<array>
<string>wotaskd</string>
<string>wotaskd</string>
<string>-WOPort</string>
<string>1085</string>
</array>
</dict>
</plist>
s11:~ root# cat /usr/local/bin/startWOtaskd.rb
#!/usr/bin/env ruby
# (2008-Dec-08)
$:.push("/usr/local/etc")
require 'siteconfig'
counter = 1
threshold = 6
logfile = "/Work/Logs/Apps/wotaskd.out"
program = File.basename($0)
defaultPath = "/System/Library/WebObjects/JavaApplications/
wotaskd.woa/"
user = "appserver"
$pid = nil
if ARGV.size == 0
puts "Usage: #{program} path_to_wotaskd [arguments]"
puts "Example:\n #{program} wotaskd -WOPort 1085"
puts "The program will be started under user '#{user}'"
puts "Default path: #{defaultPath} (if path_to_wotaskd is relative)"
puts "Logfile: #{logfile}"
exit 1
end
wotaskd = ARGV.shift
wotaskd = defaultPath + wotaskd unless wotaskd =~ /^\//
args = ARGV.join(" ")
unless File.exist?(wotaskd)
puts "ERROR. File not found: #{wotaskd} (ARGS= #{args} )"
exit 1
end
command = "sudo -u #{user} #{wotaskd} #{args}"
stdout = nil # set to "stdout" for debug output
$SYSLOG = SysLogger.new("startWOtaskd", 5, stdout, "syslog")
trap("TERM") { # TERM is the default kill signal
if $pid != nil && $pid > 100
$SYSLOG.notice "SIGTERM received. Stopping wotaskd (pid=#{$pid})."
Process.kill("SIGTERM", $pid)
end
exit 0
}
while (counter <= threshold)
if ($pid = fork) == nil
outfile = File.new(logfile, "a")
outfile.puts "\nNEWRUN (Pid=#{$$} Counter=#{counter})
#{`date`}"
outfile.puts "COMMAND: #{command}"
$stdout.reopen(outfile)
$stderr.reopen(outfile)
exec(command)
else
$SYSLOG.notice "STARTING wotaskd (Pid=#{$pid}
Counter=#{counter}). Logfile= #{logfile}"
Process.wait
end
counter = counter + 1
sleep 10
end
$SYSLOG.error "Restart threshold reached. Did restart wotaskd
#{threshold} times, giving up."
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--
Chuck Hill Senior Consultant / VP Development
Practical WebObjects - for developers who want to increase their
overall knowledge of WebObjects or who are trying to solve specific
problems.
http://www.global-village.net/products/practical_webobjects
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