osfmk/kern/call_entry.h

   1 /*
   2  * Copyright (c) 1993-1995, 1999-2000 Apple Computer, Inc.
   3  * All rights reserved.
   4  *
   5  * @APPLE_LICENSE_HEADER_START@
   6  *
   7  * Copyright (c) 1999-2003 Apple Computer, Inc.  All Rights Reserved.
   8  *
   9  * This file contains Original Code and/or Modifications of Original Code
  10  * as defined in and that are subject to the Apple Public Source License
  11  * Version 2.0 (the 'License'). You may not use this file except in
  12  * compliance with the License. Please obtain a copy of the License at
  13  * http://www.opensource.apple.com/apsl/ and read it before using this
  14  * file.
  15  *
  16  * The Original Code and all software distributed under the License are
  17  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  18  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  19  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  20  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  21  * Please see the License for the specific language governing rights and
  22  * limitations under the License.
  23  *
  24  * @APPLE_LICENSE_HEADER_END@
  25  */
  26 /*
  27  * Private declarations for thread-based callouts.
  28  *
  29  * HISTORY
  30  *
  31  * 10 July 1999 (debo)
  32  *  Pulled into Mac OS X (microkernel).
  33  *
  34  * 3 July 1993 (debo)
  35  *      Created.
  36  */
  37
  38 #ifndef _KERN_CALL_ENTRY_H_
  39 #define _KERN_CALL_ENTRY_H_
  40
  41 #ifdef MACH_KERNEL_PRIVATE
  42 #include <kern/queue.h>
  43
  44 typedef void                    *call_entry_param_t;
  45 typedef void                    (*call_entry_func_t)(
  46                                                                 call_entry_param_t              param0,
  47                                                                 call_entry_param_t              param1);
  48
  49 typedef struct call_entry {
  50     queue_chain_t               q_link;
  51     call_entry_func_t   func;
  52     call_entry_param_t  param0;
  53     call_entry_param_t  param1;
  54     uint64_t                    deadline;
  55     enum {
  56           IDLE,
  57           PENDING,
  58           DELAYED }                     state;
  59 } call_entry_data_t;
  60
  61 #define call_entry_setup(entry, pfun, p0)                               \
  62 MACRO_BEGIN                                                                                             \
  63         (entry)->func           = (call_entry_func_t)(pfun);    \
  64         (entry)->param0         = (call_entry_param_t)(p0);             \
  65         (entry)->state          = IDLE;                                                 \
  66 MACRO_END
  67
  68 #endif /* MACH_KERNEL_PRIVATE */
  69
  70 #endif /* _KERN_CALL_ENTRY_H_ */