opensolaris man page for sysevent_unbind_handle

sysevent_bind_handle(3SYSEVENT) 			  System Event Library Functions			   sysevent_bind_handle(3SYSEVENT)

NAME
       sysevent_bind_handle, sysevent_unbind_handle - bind or unbind subscriber handle

SYNOPSIS
       cc [flag...]  file ... -lsysevent [library ...]
       #include <libsysevent.h>

       sysevent_handle_t *sysevent_bind_handle(void (*event_handler)
	    (sysevent_t *ev));

       void sysevent_unbind_handle(sysevent_handle_t *sysevent_hdl);

PARAMETERS
       ev		pointer to sysevent buffer handle

       event_handler	pointer to an event handling function

       sysevent_hdl	pointer to a sysevent subscriber handle

DESCRIPTION
       The sysevent_bind_handle() function allocates memory associated with a subscription handle and binds it to the caller's event_handler.  The
       event_handler  is  invoked  during  subsequent  system  event  notifications  once  a  subscription  has  been  made   with   sysevent_sub-
       scribe_event(3SYSEVENT).

       The system event is represented by the argument ev and is passed as an argument to the invoked event delivery function, event_handler.

       Additional threads are created to service communication between syseventd(1M) and the calling process and to run the event handler routine,
       event_handler.

       The sysevent_unbind_handle() function deallocates memory and other resources associated with a subscription handle and deactivates all sys-
       tem event notifications for the calling process.  All event notifications are guaranteed to stop upon return from sysevent_unbind_handle().

RETURN VALUES
       The sysevent_bind_handle() function returns a valid sysevent subscriber handle if the handle is successfully allocated.	Otherwise, NULL is
       returned and errno is set to indicate the error.

       The sysevent_unbind_handle() function returns no value.

ERRORS
       The sysevent_bind_handle() function will fail if:

       EACCES	 The calling process has an ID other than the privileged user.

       EBUSY	 There are no resources available.

       EINVAL	 The pointer to the function event_handler is NULL.

       EMFILE	 The process has too many open descriptors.

       ENOMEM	 There are insufficient resources to allocate the handle.

ATTRIBUTES
       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Interface Stability	     |Evolving			   |
       +-----------------------------+-----------------------------+
       |MT-Level		     |MT-Safe			   |
       +-----------------------------+-----------------------------+

SEE ALSO
       syseventd(1M), sysevent_subscribe_event(3SYSEVENT), attributes(5)

NOTES
       Event notifications are revoked by syseventd when the bound process dies.  Event notification is suspended if a signal is caught  and  han-
       dled  by  the  event_handler  thread.   Event  notification is also suspended when the calling process attempts to use fork(2) or fork1(2).
       Event notifications might be lost during suspension periods.

SunOS 5.11							    12 Nov 2001 				   sysevent_bind_handle(3SYSEVENT)