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Can SIGTERM to main process kill the detached threads?
Post 302220193 by deepti_v25 on Thursday 31st of July 2008 05:40:02 AM
07-31-2008
Can SIGTERM to main process kill the detached threads?
Hi,
I am stuck up with a strange problem.
I am writing an application - a kinda tracker that reads data from memcache and invokes theads to process each record of the memcache.
I dont want to join all my threads because my tracker should poll the cache in regular intervals say sum 300 seconds without waiting for the child thread completion.
To accomplish the above task, I created a detachable tracker thread for each poll of memcache which in turn creates worker threads n joins them.
so my main tracker thread need not wait for the detached thread and can start polling the cache at a stipulated time.
Now, when i tried to give a "kill <process_id>", i observed that only my main thread is killed whereas the detached thread and worker threads are still running!!!
Ideally , a kill to main should quit all my detached threads too...ne ideas/thoughts on how to handle this?? Kindly help
I am stuck up with a strange problem.
I am writing an application - a kinda tracker that reads data from memcache and invokes theads to process each record of the memcache.
I dont want to join all my threads because my tracker should poll the cache in regular intervals say sum 300 seconds without waiting for the child thread completion.
To accomplish the above task, I created a detachable tracker thread for each poll of memcache which in turn creates worker threads n joins them.
so my main tracker thread need not wait for the detached thread and can start polling the cache at a stipulated time.
Now, when i tried to give a "kill <process_id>", i observed that only my main thread is killed whereas the detached thread and worker threads are still running!!!
Ideally , a kill to main should quit all my detached threads too...ne ideas/thoughts on how to handle this?? Kindly help
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LEARN ABOUT OSX
kill.d
kill.d(1m) USER COMMANDS kill.d(1m) NAME
kill.d - snoop process signals as they occur. Uses DTrace. SYNOPSIS
kill.d DESCRIPTION
kill.d is a simple DTrace program to print details of process signals as they are sent, such as the PID source and destination, signal num- ber and result. This program can be used to determine which process is sending signals to which other process. Since this uses DTrace, only users with root privileges can run this command. EXAMPLES
Default output, print process signals as they are sent. # kill.d FIELDS
FROM source PID COMMAND source command name TO destination PID SIG destination signal ("9" for a kill -9) RESULT result of signal (-1 is for failure) DOCUMENTATION
See the DTraceToolkit for further documentation under the Docs directory. The DTraceToolkit docs may include full worked examples with ver- bose descriptions explaining the output. EXIT
kill.d will run forever until Ctrl-C is hit. AUTHOR
Brendan Gregg [Sydney, Australia] SEE ALSO
dtrace(1M), truss(1) version 0.90 May 14, 2005 kill.d(1m)