osfmk/kern/ledger.h

   1 /*
   2  * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * Copyright (c) 1999-2003 Apple Computer, Inc.  All Rights Reserved.
   7  *
   8  * This file contains Original Code and/or Modifications of Original Code
   9  * as defined in and that are subject to the Apple Public Source License
  10  * Version 2.0 (the 'License'). You may not use this file except in
  11  * compliance with the License. Please obtain a copy of the License at
  12  * http://www.opensource.apple.com/apsl/ and read it before using this
  13  * file.
  14  *
  15  * The Original Code and all software distributed under the License are
  16  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  17  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  18  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  20  * Please see the License for the specific language governing rights and
  21  * limitations under the License.
  22  *
  23  * @APPLE_LICENSE_HEADER_END@
  24  */
  25 /*
  26  * @OSF_COPYRIGHT@
  27  */
  28 #ifndef _KERN_LEDGER_H_
  29 #define _KERN_LEDGER_H_
  30
  31
  32 #include <mach/mach_types.h>
  33 #include <ipc/ipc_port.h>
  34
  35 #include <sys/appleapiopts.h>
  36
  37 #ifdef  __APPLE_API_PRIVATE
  38
  39 #ifdef MACH_KERNEL_PRIVATE
  40
  41 #include <kern/lock.h>
  42 #include <mach/etap_events.h>
  43
  44 #define LEDGER_ITEM_INFINITY    (~0)
  45
  46 struct ledger {
  47         ipc_port_t      ledger_self;
  48         ipc_port_t      ledger_service_port;
  49         ledger_item_t   ledger_balance;
  50         ledger_item_t   ledger_limit;
  51         struct ledger   *ledger_ledger;
  52         struct ledger   *ledger_parent;
  53         decl_simple_lock_data(,lock)
  54 };
  55
  56 typedef struct ledger ledger_data_t;
  57
  58 #define ledger_lock(ledger)     simple_lock(&(ledger)->lock)
  59 #define ledger_unlock(ledger)   simple_unlock(&(ledger)->lock)
  60 #define ledger_lock_init(ledger) \
  61         simple_lock_init(&(ledger)->lock, ETAP_MISC_LEDGER)
  62
  63 extern ledger_t root_wired_ledger;
  64 extern ledger_t root_paged_ledger;
  65
  66 #define root_wired_ledger_port root_wired_ledger->ledger_self
  67 #define root_paged_ledger_port root_paged_ledger->ledger_self
  68
  69 extern void ledger_init(void);
  70
  71 extern ipc_port_t ledger_copy(ledger_t);
  72
  73 extern kern_return_t ledger_enter(ledger_t, ledger_item_t);
  74
  75 #endif /* MACH_KERNEL_PRIVATE */
  76
  77 #endif  /* __APPLE_API_PRIVATE */
  78
  79 extern ledger_t convert_port_to_ledger(ipc_port_t);
  80
  81 extern ipc_port_t convert_ledger_to_port(ledger_t);
  82
  83 #endif  /* _KERN_LEDGER_H_ */