Xref: utzoo comp.lang.c:12575 comp.unix.questions:9197
Path: utzoo!attcan!uunet!husc6!cmcl2!nrl-cmf!mailrus!uflorida!novavax!proxftl!bill
From: bill@proxftl.UUCP (T. William Wells)
Newsgroups: comp.lang.c,comp.unix.questions
Subject: Re: how many file descriptors?
Message-ID: <757@proxftl.UUCP>
Date: 14 Sep 88 02:11:12 GMT
References: <24889@teknowledge-vaxc.ARPA>
Reply-To: bill@proxftl.UUCP (T. William Wells)
Organization: Proximity Technology, Ft. Lauderdale
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In article <24889@teknowledge-vaxc.ARPA> mkhaw@teknowledge-vaxc.UUCP (Mike Khaw) writes:
: How can a SunView program tell how many file descriptors it has in use,
: especially if it opens&closes /dev/fb several times and creates&destroys
: frames several times while it's running?

Here is one way:

Call getdtablesize to determine the number of fd's that are in
the per-process file table.  Then call fcntl for each fd to
retrieve some property of each file.  Each fcntl failure
represents an available fd.

---
Bill
novavax!proxftl!bill