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insque(9r)
NAME
  insque, remque - General: Add or remove an element from the queue

SYNOPSIS
  struct generic_qheader {
			  struct generic_qheader *q_forw;
			  struct generic_qheader *q_back;
			 };

  int insque(
	  struct generic_qheader *elem,
	  struct generic_qheader *pred );

  int remque(
	  struct generic_qheader *elem );

ARGUMENTS
  elem
      Specifies the address of the queue header that contains the element to
      be manipulated.

  pred
      Specifies the address of the queue header that contains the element to
      precede the one specified by elem in the queue.

DESCRIPTION
  The insque routine adds the element that the elem argument specifies to the
  queue. The routine inserts elem in the next position after pred in the
  queue.

  The remque routine removes the element that the elem argument specifies
  from the queue it is currently in.

  Queues are built from doubly linked lists. Each element is linked into the
  queue through a queue header. All queue headers are of the generic form
  struct generic_qheader. A given element may have multiple queue headers.
  This allows each element to be simultaneously linked onto multiple queues.

  Any driver routine that manipulates these queues must call an appropriate
  spl routine to ensure that the spl level is high enough to block out any
  interrupts for other kernel modules that may access these queues.

RETURN VALUES
  None

SEE ALSO
  Routines: spl(9r)

Index for Section 9r

Alphabetical listing for I

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