sigalrm
SIGTYPE sigalrm __P((int signo));
signal(SIGALRM, sigalrm); /* that can cause hanging in read() */
signal(SIGALRM, sigalrm);
static void sigalrm(int);
if (signal(SIGALRM, sigalrm) == SIG_ERR)
if (signal(sig, sigalrm) == SIG_ERR)
void sigalrm(), sigint();
(void) signal(SIGALRM, sigalrm);
(void) signal(SIGALRM, sigalrm);
extern void sigalrm(int);
(void) sigset(SIGALRM, sigalrm);
register void (*oldsig)() = signal(SIGALRM, sigalrm);
static void sigalrm(int);
sigalrm(),
signal(SIGALRM, sigalrm);