osfmk/kern/ledger.h

   1 /*
   2  * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * The contents of this file constitute Original Code as defined in and
   7  * are subject to the Apple Public Source License Version 1.1 (the
   8  * "License").  You may not use this file except in compliance with the
   9  * License.  Please obtain a copy of the License at
  10  * http://www.apple.com/publicsource and read it before using this file.
  11  *
  12  * This Original Code and all software distributed under the License are
  13  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  14  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  15  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
  17  * License for the specific language governing rights and limitations
  18  * under the License.
  19  *
  20  * @APPLE_LICENSE_HEADER_END@
  21  */
  22 /*
  23  * @OSF_COPYRIGHT@
  24  */
  25 #ifndef _KERN_LEDGER_H_
  26 #define _KERN_LEDGER_H_
  27
  28
  29 #include <mach/mach_types.h>
  30 #include <ipc/ipc_port.h>
  31
  32 #include <sys/appleapiopts.h>
  33
  34 #ifdef  __APPLE_API_PRIVATE
  35
  36 #ifdef MACH_KERNEL_PRIVATE
  37
  38 #include <kern/lock.h>
  39 #include <mach/etap_events.h>
  40
  41 #define LEDGER_ITEM_INFINITY    (~0)
  42
  43 struct ledger {
  44         ipc_port_t      ledger_self;
  45         ipc_port_t      ledger_service_port;
  46         ledger_item_t   ledger_balance;
  47         ledger_item_t   ledger_limit;
  48         struct ledger   *ledger_ledger;
  49         struct ledger   *ledger_parent;
  50         decl_simple_lock_data(,lock)
  51 };
  52
  53 typedef struct ledger ledger_data_t;
  54
  55 #define ledger_lock(ledger)     simple_lock(&(ledger)->lock)
  56 #define ledger_unlock(ledger)   simple_unlock(&(ledger)->lock)
  57 #define ledger_lock_init(ledger) \
  58         simple_lock_init(&(ledger)->lock, ETAP_MISC_LEDGER)
  59
  60 extern ledger_t root_wired_ledger;
  61 extern ledger_t root_paged_ledger;
  62
  63 #define root_wired_ledger_port root_wired_ledger->ledger_self
  64 #define root_paged_ledger_port root_paged_ledger->ledger_self
  65
  66 extern void ledger_init(void);
  67
  68 extern ipc_port_t ledger_copy(ledger_t);
  69
  70 extern kern_return_t ledger_enter(ledger_t, ledger_item_t);
  71
  72 #endif /* MACH_KERNEL_PRIVATE */
  73
  74 #endif  /* __APPLE_API_PRIVATE */
  75
  76 extern ledger_t convert_port_to_ledger(ipc_port_t);
  77
  78 extern ipc_port_t convert_ledger_to_port(ledger_t);
  79
  80 #endif  /* _KERN_LEDGER_H_ */