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From: | "Max Bowsher" <maxb AT ukf DOT net> |
To: | <cygwin AT cygwin DOT com> |
Subject: | Problem with alarm() not functioning twice in one program. |
Date: | Tue, 8 Feb 2005 20:29:33 -0000 |
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The following program produces the output: Begin Done Begin ...and then hangs. Can anyone help me understand why? Thankyou, Max. #include <stdio.h> #include <signal.h> #include <setjmp.h> #include <unistd.h> jmp_buf timer; void alarm_handler(int dummy) { longjmp(timer, 1); } void speedtest(void) { fprintf(stderr, "Begin\n"); signal(SIGALRM, alarm_handler); if (setjmp(timer) == 0) { alarm(1); while(1) {}; } signal(SIGALRM, SIG_DFL); fprintf(stderr, "Done\n"); return; } int main(int argc, char* argv[]) { speedtest(); speedtest(); return 0; } -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Problem reports: http://cygwin.com/problems.html Documentation: http://cygwin.com/docs.html FAQ: http://cygwin.com/faq/
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