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insque (3)

insque (3) ( Solaris man: Библиотечные вызовы )

insque (3) ( FreeBSD man: Библиотечные вызовы )

insque (3) ( Русские man: Библиотечные вызовы )

>> insque (3) ( Linux man: Библиотечные вызовы )

insque (3) ( POSIX man: Библиотечные вызовы )

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 3.14 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/.

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