NAME
insque, remque - insert/remove an item from a queue
SYNOPSIS
#include <search.h>
void insque(void *elem, void *prev);
void remque(void *elem);
Feature Test Macro Requirements for glibc (see feature_test_macros(7)):
insque(), remque(): _SVID_SOURCE || _XOPEN_SOURCE >= 500
DESCRIPTION
insque() and remque() are functions for manipulating doubly-linked
lists. Each element in the list is a structure of which the first two
structure elements are a forward and a backward pointer.
insque() inserts the element pointed to by elem immediately after the
element pointed to by prev, which must not be NULL.
remque() removes the element pointed to by elem from the doubly-linked
list.
CONFORMING TO
POSIX.1-2001.
NOTES
Traditionally (e.g., SunOS, Linux libc 4 and libc 5), the arguments of
these functions were of type struct qelem *, defined as:
struct qelem {
struct qelem *q_forw;
struct qelem *q_back;
char q_data[1];
};
This is still what you will get if _GNU_SOURCE is defined before
including <search.h>.
The location of the prototypes for these functions differs among
several versions of Unix. The above is the POSIX version. Some
systems place them in <string.h>. Linux libc4 and libc 5 placed them
in <stdlib.h>.
COLOPHON
This page is part of release 3.24 of the Linux man-pages project. A
description of the project, and information about reporting bugs, can
be found at http://www.kernel.org/doc/man-pages/.
2008-07-11 INSQUE(3)