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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 V7
kill
KILL(2) System Calls Manual KILL(2) NAME
kill - send signal to a process SYNOPSIS
kill(pid, sig); DESCRIPTION
Kill sends the signal sig to the process specified by the process number in r0. See signal(2) for a list of signals. The sending and receiving processes must have the same effective user ID, otherwise this call is restricted to the super-user. If the process number is 0, the signal is sent to all other processes in the sender's process group; see tty(4). If the process number is -1, and the user is the super-user, the signal is broadcast universally except to processes 0 and 1, the scheduler and initialization processes, see init(8). Processes may send signals to themselves. SEE ALSO
signal(2), kill(1) DIAGNOSTICS
Zero is returned if the process is killed; -1 is returned if the process does not have the same effective user ID and the user is not super-user, or if the process does not exist. ASSEMBLER
(kill = 37.) (process number in r0) sys kill; sig KILL(2)