rosa@maui.cs.ucla.edu (04/28/89)
I have a C program with real time restrictions that uses the "usleep" routine provided in the SUN's C library ("usleep" gives precision of micro-seconds). In the HP's, there is not this routine. Does anybody know about any "nap" or "usleep" routine that would work in a HP machine with a precision of tenths-of-a-second at least? The operating system is BSD4.3. Thanks in advance, --Berthier
stroyan@hpfcdc.HP.COM (Mike Stroyan) (05/01/89)
> Does anybody know about any "nap" or "usleep" routine that would > work in a HP machine with a precision of tenths-of-a-second at least? > The operating system is BSD4.3. Use a "select" call timeout with 0 file descriptors. Mike Stroyan, stroyan@hpstryn
burdick@hpindda.HP.COM (Matt Burdick) (05/02/89)
> Does anybody know about any "nap" or "usleep" routine that would > work in a HP machine with a precision of tenths-of-a-second at least? > The operating system is BSD4.3. Try this: ------------------------------------ #include <sys/types.h> #include <sys/time.h> usleep(usecs) u_long usecs; { struct timeval tv; tv.tv_sec = usecs / 1000000L; tv.tv_usec = usecs % 1000000L; (void)select(0, 0, 0, 0, &tv); } ------------------------------------ By the way, this was not written by me, I just grabbed it from another HP machine. -- Matt Burdick | Hewlett-Packard burdick%hpda@hplabs.hp.com | Technical Communications Lab