Hands-On System Programming with Linux

Code example – handling signals in an MT app

A quick demonstration of the POSIX recommended technique for handling signals in an MT application follows (ch16/tsig.c):

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// ... in main:/* Block *all* signals here in the main thread. * Now all subsequently created threads also block all signals. */  sigfillset(&sigset);  if (pthread_sigmask(SIG_BLOCK, &sigset, NULL))      FATAL("main: pthread_sigmask failed");...  /*--- Create the dedicated signal handling thread ---*/ ret = pthread_create(&pthrd[t], &attr, ...