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 :: Mailing Lists

[ILUG] Signal handling

[ILUG] Signal handling

Dale Dunlea daledunlea at commergy.com
Fri Feb 4 10:13:36 GMT 2005


Hi All,

I have a program that calls fork() followed by execl(). When the child 
process terminates, the signal handler gets called in the parent, which 
starts a new child process in the same manner. Occasionally, the parent 
process will have need to call system() whilst there is already a child 
process running somewhere. When system() returns, it fires the signal 
handler too, which is undesired.

My questions:
- When the signal handler is called, how can I tell which child process 
is generating it.
- With multiple child processes, if a second child terminates while the 
parent is in a signal handler due to the termination of the second 
child, is there any chance of missing the second signal?

Regards,
Dale.

-- 
http://www.commergy.com




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