# 2.11BSD#431 - /usr/src/lib/libc/gen/ualarm.c

##### Functions

    ualarm            X

##### Macros

    USPS              X

       1: /*
       2:  * Copyright (c) 1985 Regents of the University of California.
       3:  * All rights reserved.  The Berkeley software License Agreement
       4:  * specifies the terms and conditions for redistribution.
       5:  */
       6:
       7: #if defined(LIBC_SCCS) && !defined(lint)
       8: static char sccsid[] = "@(#)ualarm.c	5.2 (Berkeley) 3/9/86";
       9: #endif LIBC_SCCS and not lint
      10:
      11: #include <sys/time.h>
      12:
      13: #define USPS    1000000     /* # of microseconds in a second */
      14:
      15: /*
      16:  * Generate a SIGALRM signal in ``usecs'' microseconds.
      17:  * If ``reload'' is non-zero, keep generating SIGALRM
      18:  * every ``reload'' microseconds after the first signal.
      19:  */
      20: unsigned
      21: ualarm(usecs, reload)
      22:     register unsigned usecs;
      23:     register unsigned reload;
      24: {
      25:     struct itimerval new, old;
      26:
      27:     new.it_interval.tv_usec = reload % USPS;
      28:     new.it_interval.tv_sec = reload / USPS;
      29:
      30:     new.it_value.tv_usec = usecs % USPS;
      31:     new.it_value.tv_sec = usecs / USPS;
      32:
      33:     if (setitimer(ITIMER_REAL, &new, &old) == 0)
      34:         return (old.it_value.tv_sec * USPS + old.it_value.tv_usec);
      35:     /* else */
      36:         return (-1);
      37: }

#### Defined functions

ualarm defined in line 20; used 1 times

- in /usr/include/unistd.h line 89

#### Defined variables

sccsid defined in line 8; never used

#### Defined macros

USPS defined in line 13; used 5 times

- in line 27-34(5)

Last modified: 1986-03-10 Generated: 2016-12-26 | Generated by src2html V0.67 page hit count: 422 |