/*
 * Copyright (c) 2000 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@
 */
/* CMU_HIST */

/*
 *      kern/ast.h: Definitions for Asynchronous System Traps.
 */

#ifndef _KERN_AST_H_
#define _KERN_AST_H_

#include <kern/thread.h>

struct task;

extern void act_set_astbsd(thread_t);
extern void bsd_ast(thread_t);

#define AST_KEVENT_RETURN_TO_KERNEL  0x0001
#define AST_KEVENT_REDRIVE_THREADREQ 0x0002
#define AST_KEVENT_WORKQ_QUANTUM_EXPIRED 0x0004

extern void kevent_ast(thread_t thread, uint16_t bits);
extern void act_set_astkevent(thread_t thread, uint16_t bits);
extern uint16_t act_clear_astkevent(thread_t thread, uint16_t bits);
extern bool act_set_ast_reset_pcs(struct task *task, thread_t thread);

#if CONFIG_DTRACE
extern void ast_dtrace_on(void);
#endif

extern void act_set_astproc_resource(thread_t);
extern void proc_filedesc_ast(task_t task);
#endif  /* _KERN_AST_H_ */