Signals and threads

Hi

I have a problem using sigaction function in pthread library.
I have 2 thread each one registering

in threadA
act1.sa_handler=func1;
if(sigaction(SIGUSR1,&act1,NULL)) printf("\nSigaction failed! in th1
!!\n");

in threadB
act1.sa_handler=func2;
if(sigaction(SIGUSR1,&act2,NULL)) printf("\nSigaction failed! in th2
!!\n");

but when i send signal SIGUSR1 to threadA , threadA receives the
signal
but the handler func2 is getting called,


Please let me know is there any way to solve this problem?
thanks in advance
thomas

.

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