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  * The contents of this file constitute Original Code as defined in and
   8  * are subject to the Apple Public Source License Version 1.1 (the
   9  * "License").  You may not use this file except in compliance with the
  10  * License.  Please obtain a copy of the License at
  11  * http://www.apple.com/publicsource and read it before using this file.
  12  *
  13  * This Original Code and all software distributed under the License are
  14  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  15  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  16  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
  18  * License for the specific language governing rights and limitations
  19  * under the License.
  20  *
  21  * @APPLE_LICENSE_HEADER_END@
  22  */
  23 /*
  24  * Private declarations for thread-based callouts.
  25  *
  26  * HISTORY
  27  *
  28  * 10 July 1999 (debo)
  29  *  Pulled into Mac OS X (microkernel).
  30  *
  31  * 3 July 1993 (debo)
  32  *      Created.
  33  */
  34
  35 #ifndef _KERN_CALL_ENTRY_H_
  36 #define _KERN_CALL_ENTRY_H_
  37
  38 #ifdef MACH_KERNEL_PRIVATE
  39 #include <kern/queue.h>
  40
  41 typedef void                    *call_entry_param_t;
  42 typedef void                    (*call_entry_func_t)(
  43                                                                 call_entry_param_t              param0,
  44                                                                 call_entry_param_t              param1);
  45
  46 typedef struct call_entry {
  47     queue_chain_t               q_link;
  48     call_entry_func_t   func;
  49     call_entry_param_t  param0;
  50     call_entry_param_t  param1;
  51     uint64_t                    deadline;
  52     enum {
  53           IDLE,
  54           PENDING,
  55           DELAYED }                     state;
  56 } call_entry_data_t;
  57
  58 #define call_entry_setup(entry, pfun, p0)                               \
  59 MACRO_BEGIN                                                                                             \
  60         (entry)->func           = (call_entry_func_t)(pfun);    \
  61         (entry)->param0         = (call_entry_param_t)(p0);             \
  62         (entry)->state          = IDLE;                                                 \
  63 MACRO_END
  64
  65 #endif /* MACH_KERNEL_PRIVATE */
  66
  67 #endif /* _KERN_CALL_ENTRY_H_ */