osfmk/kern/ledger.h

   1 /*
   2  * Copyright (c) 2000-2004 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
   5  *
   6  * This file contains Original Code and/or Modifications of Original Code
   7  * as defined in and that are subject to the Apple Public Source License
   8  * Version 2.0 (the 'License'). You may not use this file except in
   9  * compliance with the License. The rights granted to you under the License
  10  * may not be used to create, or enable the creation or redistribution of,
  11  * unlawful or unlicensed copies of an Apple operating system, or to
  12  * circumvent, violate, or enable the circumvention or violation of, any
  13  * terms of an Apple operating system software license agreement.
  14  *
  15  * Please obtain a copy of the License at
  16  * http://www.opensource.apple.com/apsl/ and read it before using this file.
  17  *
  18  * The Original Code and all software distributed under the License are
  19  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  20  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  21  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  22  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  23  * Please see the License for the specific language governing rights and
  24  * limitations under the License.
  25  *
  26  * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
  27  */
  28 /*
  29  * @OSF_COPYRIGHT@
  30  */
  31
  32 #ifdef  MACH_KERNEL_PRIVATE
  33
  34 #ifndef _KERN_LEDGER_H_
  35 #define _KERN_LEDGER_H_
  36
  37 #include <mach/mach_types.h>
  38
  39 #include <kern/kern_types.h>
  40 #include <kern/lock.h>
  41 #include <ipc/ipc_types.h>
  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, 0)
  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) __attribute__((section("__TEXT, initcode")));
  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 extern ledger_t convert_port_to_ledger(ipc_port_t);
  73
  74 extern ipc_port_t convert_ledger_to_port(ledger_t);
  75
  76 #endif  /* _KERN_LEDGER_H_ */
  77
  78 #endif /* MACH_KERNEL_PRIVATE */