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select_enqueue(9r)
NAME
  select_enqueue - General: Adds the current kernel thread

SYNOPSIS
  void select_enqueue(
	  sel_queue_t *selq );

ARGUMENTS
  selq
      Specifies a pointer to a sel_queue structure.

DESCRIPTION
  The select_enqueue routine adds the current kernel thread to the list of
  kernel threads waiting for a select event on the specified device. This
  routine is called when a kernel module's select routine has been called and
  the requested event cannot be immediately satisfied.	For example, the
  requested event cannot be immediately satisfied when xxselect is called for
  the following reasons:

    ·  To select on input and there are no characters available

    ·  When called for output and the kernel module's output buffers are
       currently full

  By calling select_enqueue, the kernel module's select routine ensures that
  the kernel thread issuing the select call will be blocked until the
  requested event can be satisfied or until the select call terminates.

CAUTIONS
  You must call the queue_init routine to initialize the sel_queue structure
  pointer prior to calling select_enqueue. Failure to do so causes the kernel
  to panic.

RETURN VALUES
  None

FILES
  <poll.h>

  <select.h>

SEE ALSO
  Routines: queue_init(9r), select_dequeue(9r), select_dequeue_all(9r),
  select_wakeup(9r)

  Data Structures: sel_queue(9s)

  System Calls: select(2)

Index for Section 9r

Alphabetical listing for S

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