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need help for two programming problems in imx6( ubuntu 11.10 )

Question asked by brade on Oct 29, 2013

1. can't get call stack by using function "backtrace".

2. I have two threads: thread1 and thread2. First let thread1 block the terminal signal, then thread1 raise terminal signal and hope thread2 to run signal handler, but thread2 does not execute signal handler.

 

Please kindly give me some comments for these two problems. Thanks very much!

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