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NetBSD 6.1.5 - man page for sysmon_task_queue_fini (netbsd section 9)

SYSMON_TASKQ(9) 		  BSD Kernel Developer's Manual 		  SYSMON_TASKQ(9)

NAME
     sysmon_taskq -- general purpose system monitoring task queue

SYNOPSIS
     #include <dev/sysmon/sysmon_taskq.h>

     void
     sysmon_task_queue_preinit(void);

     void
     sysmon_task_queue_init(void);

     void
     sysmon_task_queue_fini(void);

     int
     sysmon_task_queue_sched(u_int pri, void (*func)(void *), void *arg);

DESCRIPTION
     The machine-independent sysmon_taskq provides a simple general purpose task queue.  It can
     be used to run callbacks that require thread context, but do not warrant the use of a more
     fine-grained solution.

     Although the intended usage is related to the context of system monitoring and power manage-
     ment, also other comparable functions are suitable for sysmon_taskq.

FUNCTIONS
     The necessary internal data structures are initialized during system startup by
     sysmon_task_queue_preinit().  Before actual usage, a machine-dependent procedure should fin-
     ish the initialization by calling sysmon_task_queue_init().  This will create a kernel
     thread that can be later halted by sysmon_task_queue_fini().  All scheduled tasks are exe-
     cuted before the queue is halted.

     The sysmon_task_queue_sched() enqueues func to be executed at the priority pri.  If pri is
     0, the scheduled function will be placed as the last element in the queue.  The single argu-
     ment passed to func is specified by arg.

RETURN VALUES
     Upon successful completion, sysmon_task_queue_sched() returns 0.  Otherwise, the following
     error values are returned:

     [EINVAL]  An invalid parameter was specified.

     [ENOMEM]  There was not enough memory.

SEE ALSO
     queue(3), kthread(9), workqueue(9)

AUTHORS
     Jason R. Thorpe <thorpej@NetBSD.org>

BSD					 January 24, 2010				      BSD


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