insque(3) -- Linux man page
NAME
insque, remque - insert/remove an item from a queue
SYNOPSIS
#include <search.h>
void insque(void *elem, void *prev);
void remque(void *elem);
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 1003.1-2001
HISTORICAL NOTES
Traditionally (e.g. SunOS, Linux libc 4,5) the parameters of these
functions were of type struct qelem *, where the struct
is 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 libc4,5 placed them
in <stdlib.h>.
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