/*
* Copyright (c) 2006 Apple Computer, Inc. All rights reserved.
*
* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
*
* This file contains Original Code and/or Modifications of Original Code
* as defined in and that are subject to the Apple Public Source License
* Version 2.0 (the 'License'). You may not use this file except in
* compliance with the License. The rights granted to you under the License
* may not be used to create, or enable the creation or redistribution of,
* unlawful or unlicensed copies of an Apple operating system, or to
* circumvent, violate, or enable the circumvention or violation of, any
* terms of an Apple operating system software license agreement.
*
* Please obtain a copy of the License at
* http://www.opensource.apple.com/apsl/ and read it before using this file.
*
* The Original Code and all software distributed under the License are
* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
* Please see the License for the specific language governing rights and
* limitations under the License.
*
* @APPLE_OSREFERENCE_LICENSE_HEADER_END@
*/
#include <sys/cdefs.h>
typedef enum {
KDP_EVENT_ENTER,
KDP_EVENT_EXIT,
KDP_EVENT_PANICLOG
} kdp_event_t;
__BEGIN_DECLS
typedef void (*kdp_callout_fn_t)(void *arg, kdp_event_t event);
/*
* Register fn(arg, event) to be called at kdp entry/exit.
* The callouts are made in a single-threaded environment, interrupts are
* disabled and processors other than the callout processor quiesced.
* N.B. callouts are strictly limited in what they can do: they must execute
* with interrupts disabled and they can't call back into the kernel for any
* non-trivial service.
*/
extern void kdp_register_callout(kdp_callout_fn_t fn, void *arg);
__END_DECLS