osfmk/kern/call_entry.h

   1 /*
   2  * Copyright (c) 1993-1995, 1999-2000 Apple Computer, Inc.
   3  * All rights reserved.
   4  *
   5  * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
   6  *
   7  * This file contains Original Code and/or Modifications of Original Code
   8  * as defined in and that are subject to the Apple Public Source License
   9  * Version 2.0 (the 'License'). You may not use this file except in
  10  * compliance with the License. The rights granted to you under the License
  11  * may not be used to create, or enable the creation or redistribution of,
  12  * unlawful or unlicensed copies of an Apple operating system, or to
  13  * circumvent, violate, or enable the circumvention or violation of, any
  14  * terms of an Apple operating system software license agreement.
  15  *
  16  * Please obtain a copy of the License at
  17  * http://www.opensource.apple.com/apsl/ and read it before using this file.
  18  *
  19  * The Original Code and all software distributed under the License are
  20  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  21  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  22  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  23  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  24  * Please see the License for the specific language governing rights and
  25  * limitations under the License.
  26  *
  27  * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
  28  */
  29 /*
  30  * Private declarations for thread-based callouts.
  31  *
  32  * HISTORY
  33  *
  34  * 10 July 1999 (debo)
  35  *  Pulled into Mac OS X (microkernel).
  36  *
  37  * 3 July 1993 (debo)
  38  *      Created.
  39  */
  40
  41 #ifndef _KERN_CALL_ENTRY_H_
  42 #define _KERN_CALL_ENTRY_H_
  43
  44 #ifdef MACH_KERNEL_PRIVATE
  45 #include <kern/queue.h>
  46
  47 typedef void                    *call_entry_param_t;
  48 typedef void                    (*call_entry_func_t)(
  49                                                                 call_entry_param_t              param0,
  50                                                                 call_entry_param_t              param1);
  51
  52 typedef struct call_entry {
  53     queue_chain_t               q_link;
  54     call_entry_func_t   func;
  55     call_entry_param_t  param0;
  56     call_entry_param_t  param1;
  57     uint64_t                    deadline;
  58     enum {
  59           IDLE,
  60           PENDING,
  61           DELAYED }                     state;
  62 } call_entry_data_t;
  63
  64 #define call_entry_setup(entry, pfun, p0)                               \
  65 MACRO_BEGIN                                                                                             \
  66         (entry)->func           = (call_entry_func_t)(pfun);    \
  67         (entry)->param0         = (call_entry_param_t)(p0);             \
  68         (entry)->state          = IDLE;                                                 \
  69 MACRO_END
  70
  71 #endif /* MACH_KERNEL_PRIVATE */
  72
  73 #endif /* _KERN_CALL_ENTRY_H_ */