SIGPROF is masked by select() .

timer() is not work at all. It's probablely that the timer signal SIGPROF is masked by select(). I read a bundle of manuals and found no answer, all said the select() could be interrupted by signals if not masked. Here is the pr

SIGPROF is masked by select() .

the select() call works,the POSIX timer() is not work at all. It's probablely that the timer signal SIGPROF is masked by select(). I read a bundle of manuals and found no answer, all said the select() could be interrupted by signals if not masked. Below is the program,also,it is attached to