43 lines
667 B
C
43 lines
667 B
C
#include <errno.h>
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#include <error.h>
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#include <signal.h>
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#include <stdlib.h>
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volatile int count;
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void
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sh (int sig)
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{
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++count;
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}
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int
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main (void)
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{
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struct sigaction sa;
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sa.sa_handler = sh;
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sigemptyset (&sa.sa_mask);
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sa.sa_flags = 0;
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if (sigaction (SIGUSR1, &sa, NULL) < 0)
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{
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printf ("sigaction failed: %m\n");
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exit (1);
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}
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if (raise (SIGUSR1) < 0)
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{
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printf ("first raise failed: %m\n");
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exit (1);
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}
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if (raise (SIGUSR1) < 0)
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{
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printf ("second raise failed: %m\n");
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exit (1);
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}
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if (count != 2)
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{
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printf ("signal handler not called 2 times\n");
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exit (1);
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}
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exit (0);
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}
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