linux - Signal not delivered for a very long time (about 20 seconds) -


a signal process has sent within signal handler not delivered 20 seconds , delivered.

what probable causes?

i know probable reasons in general.

the actual code looking @ here

most probably, you're calling function within signal handler mustn't call within signal handler.

see man 7 signal details:

async-signal-safe functions

a signal handler function must careful, since processing elsewhere may interrupted @ arbitrary point in execution of program. posix has concept of "safe function". if signal interrupts execution of unsafe function, , handler calls unsafe function, behavior of program undefined.


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