xnu-792.tar.gz

[apple/xnu.git] / osfmk / kern / thread_call.h

/*
 * Copyright (c) 1993-1995, 1999-2005 Apple Computer, Inc.
 * All rights reserved.
 *
 * @APPLE_LICENSE_HEADER_START@
 * 
 * The contents of this file constitute Original Code as defined in and
 * are subject to the Apple Public Source License Version 1.1 (the
 * "License").  You may not use this file except in compliance with the
 * License.  Please obtain a copy of the License at
 * http://www.apple.com/publicsource and read it before using this file.
 * 
 * This 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 OR NON-INFRINGEMENT.  Please see the
 * License for the specific language governing rights and limitations
 * under the License.
 * 
 * @APPLE_LICENSE_HEADER_END@
 */
/*
 * Declarations for thread-based callouts.
 */

#ifndef _KERN_THREAD_CALL_H_
#define _KERN_THREAD_CALL_H_

#include <mach/mach_types.h>

#include <kern/clock.h>

#include <sys/cdefs.h>

typedef struct call_entry	*thread_call_t;
typedef void				*thread_call_param_t;
typedef void				(*thread_call_func_t)(
									thread_call_param_t		param0,
									thread_call_param_t		param1);
__BEGIN_DECLS

boolean_t
thread_call_enter(
	thread_call_t		call
);

boolean_t
thread_call_enter1(
	thread_call_t			call,
	thread_call_param_t		param1
);

boolean_t
thread_call_enter_delayed(
	thread_call_t		call,
	uint64_t			deadline
);

boolean_t
thread_call_enter1_delayed(
	thread_call_t			call,
	thread_call_param_t		param1,
	uint64_t				deadline
);

boolean_t
thread_call_cancel(
	thread_call_t		call
);

thread_call_t
thread_call_allocate(
	thread_call_func_t		func,
	thread_call_param_t		param0
);

boolean_t
thread_call_free(
	thread_call_t		call
);

__END_DECLS

#ifdef	MACH_KERNEL_PRIVATE

#include <kern/call_entry.h>

typedef struct call_entry	thread_call_data_t;

void
thread_call_initialize(void);

void
thread_call_setup(
	thread_call_t			call,
	thread_call_func_t		func,
	thread_call_param_t		param0
);

void
call_thread_block(void),
call_thread_unblock(void);

#endif	/* MACH_KERNEL_PRIVATE */

#ifdef	KERNEL_PRIVATE

__BEGIN_DECLS

/*
 * Obsolete interfaces.
 */

boolean_t
thread_call_is_delayed(
	thread_call_t		call,
	uint64_t			*deadline
);

void
thread_call_func(
	thread_call_func_t		func,
	thread_call_param_t		param,
	boolean_t				unique_call
);

void
thread_call_func_delayed(
	thread_call_func_t		func,
	thread_call_param_t		param,
	uint64_t				deadline
);

boolean_t
thread_call_func_cancel(
	thread_call_func_t		func,
	thread_call_param_t		param,
	boolean_t				cancel_all
);

#ifndef	MACH_KERNEL_PRIVATE

#ifndef	ABSOLUTETIME_SCALAR_TYPE

#define thread_call_enter_delayed(a, b)	\
	thread_call_enter_delayed((a), __OSAbsoluteTime(b))

#define thread_call_enter1_delayed(a, b, c)	\
	thread_call_enter1_delayed((a), (b), __OSAbsoluteTime(c))

#define thread_call_is_delayed(a, b)	\
	thread_call_is_delayed((a), __OSAbsoluteTimePtr(b))

#define thread_call_func_delayed(a, b, c)	\
	thread_call_func_delayed((a), (b), __OSAbsoluteTime(c))

#endif	/* ABSOLUTETIME_SCALAR_TYPE */

#endif	/* MACH_KERNEL_PRIVATE */

__END_DECLS

#endif	/* KERNEL_PRIVATE */

#endif	/* _KERN_THREAD_CALL_H_ */