On Wed, Mar 20, 2002 at 01:03:53AM -0500, Rob Gibson wrote:
>DLL version 1.3.10, running on Windows ME. I checked the message boards,
>but did not see this.
>
>Call this code X: {
> alarm(2);
> pause();
> cout << "A";
> alarm(4);
> pause();
> cout << "B";
> alarm(4);
> pause();
> cout << "C";
> alarm(4);
> pause();
> cout << "D";
>}
>
>
>I have two threads. In the first, my original startup thread, I register a
>sig handler for SIGALRM. At this point, if I block the SIGALRM signal,
>then run X, nothing happens. Ok. (If I unblock SIGALRM, I get four calls
>to my sig handler, spaced the appropriate number of seconds apart. Ok.)
>
>Now I start a second thread using pthread_create(). In the second thread's
>function, if I immediately run code X, nothing happens, because my second
>thread has inherited the blocked nature of SIGALRM. Ok.
signals do not work with anything but the main thread. Sorry.
cgf
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