Why would a kill -2 not work?

Chuck Swiger cswiger at mac.com
Mon May 18 21:50:08 UTC 2009


On May 18, 2009, at 2:45 PM, Peter Steele wrote:
> This is basically what we doing. When the handler is triggered we  
> set a global variable to indicate the system is shutting down. I  
> also signal a condition to wake up a sleeping thread. The lack of  
> log messages indicate that this handler never gets called and the  
> system carries on as if the kill -2 never happened.

You're not trying to send a signal within the signal handler itself,  
are you?  That won't work-- signal delivery is blocked when you're  
already running in a signal handler.  Also, note that trying to mix  
signals with a multithreaded process is complicated....


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