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authorJacob McDonnell <jacob@jacobmcdonnell.com>2026-04-26 16:38:00 -0400
committerJacob McDonnell <jacob@jacobmcdonnell.com>2026-04-26 16:38:00 -0400
commit97d5c458cfa039d857301e1ca7d5af3beb37131d (patch)
treeb460cd850d0537eb71806ba30358840377b27688 /static/v10/man3/pipebuf.3
parentb89dc2331a50c63f8b33272a5c4c61ab98abdaa3 (diff)
build: Better Build System
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-. \"ident "%W%"
-. \"Copyright (c) 1984 AT&T
-. \"All Rights Reserved
-. \"THIS IS UNPUBLISHED PROPRIETARY SOURCE CODE OF AT&T
-. \"The copyright notice above does not evidence any
-. \"actual or intended publication of such source code.
-.TH PIPEBUF 3I+ "C++ Stream Library" " "
-.SH NAME
-pipebuf \- streambuf specialized as circular queue
-.SH SYNOPSIS
-.nf
-.ft B
-.ta1i 2i
-#include <iostream.h>
-#include <pipestream.h>
-
-class pipebuf : streambuf {
- pipebuf();
- int empty();
- int full();
- streambuf* setbuf(char* ptr, int len);
-} ;
-.ft R
-.fi
-.SH DESCRIPTION
-A \f(CWpipebuf\fR
-uses its reserve area to support a circular
-queue of characters.
-In terms of the abstract notion of buffer a \f(CWpipebuf\fR
-is a potentially infinite sequence in which the put pointer
-and get pointer move independently.
-The put pointer is always at the end of the sequence, and
-puts extend the sequence.
-As long as the get pointer remains behind the put pointer, but
-not too far behind, fetching and storing can continue indefinitely.
-Seeks are not supported.
-.PP
-Assume
-.br
-\(em \fBpb\fR is a \f(CWpipebuf\fR.
-.br
-\(em \fBptr\fR is a \f(CWchar*\fR.
-.br
-\(em \fBi\fR and \fBlen\fR are an \f(CWint\fR.
-.br
-\(em \fBsb\fR is \f(CWstreambuf*\fR.
-.PP
-Constructor:
-.TP
-\fBpipebuf()\fR
-Constructs an empty buffer.
-.PP
-Members:
-.TP
-\fBi=pb.empty()\fR
-Returns non-zero if the get pointer is at the end of the sequence,
-and attempts to get characters will therefore fail.
-.TP
-\fBi=pb.full()\fR
-Returns non-zero if there is no more room for putting
-characters. In the current implementation, the capacity of
-the buffer is one less than the size of the reserve area.
-.TP
-\fBsb=pb.setbuf(ptr,len)\fR
-Establishes the \fBlen\fR bytes starting at \fBptr\fR
-as the reserve area. Normally it will return \fB&pb\fR. But
-it will return a null pointer if it fails. Failure occurs
-if \fBpb.empty()\fR is zero, or if \fBlen\fR is less than 2.
-.SH CAVEATS
-There ought to be a version with an unbounded capacity.
-.SH SEE ALSO
-streambuf(3C++)
-pipestream(3C++)