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INSQUE(3)		   Linux Programmer's Manual		     INSQUE(3)

NAME
       insque, remque -	insert/remove an item from a queue

SYNOPSIS
       #include	<stdlib.h>

       void insque(struct qelem	*elem, struct qelem *prev);
       void remque(struct qelem	*elem);

DESCRIPTION
       insque()	 and  remque() are functions for manipulating queues made from
       doubly-linked lists.  Each element in this list is of type struct qelem

       The qelem structure is defined as

	      struct qelem {
		  struct    qelem *q_forw;
		  struct    qelem *q_back;
		  char	    q_data[1];
	      };

       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
       SVR4

BUGS
       The q_data field	is sometimes defined to	be type	char *,	and under  so-
       laris 2.x, it doesn't appear to exist at	all.

       The location of the prototypes for these	functions differ among several
       versions	of UNIX.  Some systems place them  in  <search.h>,  others  in
       <string.h>.   Linux  places them	in <stdlib.h> since that seems to make
       the most	sense.

       Some versions of	UNIX (like HP-UX 10.x) do not define  a	 struct	 qelem
       but  rather have	the arguments to insque() and remque() be of type void
       *.

GNU				  1996-10-30			     INSQUE(3)

NAME | SYNOPSIS | DESCRIPTION | CONFORMING TO | BUGS

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