HP-UX Reference (11i v1 00/12) - 2 System Calls (vol 5)

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STANDARD Printed by: Nora Chuang [nchuang] STANDARD
/build/1111/BRICK/man2/!!!intro.2
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s
select(2) select(2)
* configured for, by using sysconf(_SC_OPEN_MAX).
* Note that, if you are not using these many files, you are
* wasting too much space.
*/
num_of_fds = sysconf(_SC_OPEN_MAX);
s = sizeof(long);
/*
* howmany is a macro defined in sys/types.h
*/
f = (struct fd_set *)malloc(s*howmany(num_of_fds, s*8);
/*
* Use f wherever struct fd_set * is used.
* It can be used to test num_of_fds file descriptors.
*/
SEE ALSO
fcntl(2), poll(2), read(2), write(2), <sys/time.h>.
CHANGE HISTORY
First released in Issue 4, Version 2.
Section 2−−274 − 3 − HP-UX Release 11i: December 2000
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