headers/private/kernel/vm/vm_priv.h

   1 /*
   2  * Copyright 2002-2008, Haiku. All rights reserved.
   3  * Distributed under the terms of the MIT License.
   4  *
   5  * Copyright 2001-2002, Travis Geiselbrecht. All rights reserved.
   6  * Distributed under the terms of the NewOS License.
   7  */
   8 #ifndef _KERNEL_VM_VM_PRIV_H
   9 #define _KERNEL_VM_VM_PRIV_H
  10
  11
  12 #include <vm/vm_types.h>
  13
  14
  15 // reserved area definitions
  16 #define RESERVED_AREA_ID -1
  17 #define RESERVED_AVOID_BASE 0x01
  18
  19 // page attributes (in addition to B_READ_AREA etc.)
  20 #define PAGE_MODIFIED 0x1000
  21 #define PAGE_ACCESSED 0x2000
  22 #define PAGE_PRESENT  0x4000
  23
  24
  25 #ifdef __cplusplus
  26 extern "C" {
  27 #endif
  28
  29 // Should only be used by vm internals
  30 status_t vm_page_fault(addr_t address, addr_t faultAddress, bool isWrite,
  31         bool isExecute, bool isUser, addr_t *newip);
  32 void vm_unreserve_memory(size_t bytes);
  33 status_t vm_try_reserve_memory(size_t bytes, int priority, bigtime_t timeout);
  34 status_t vm_daemon_init(void);
  35
  36 const char *page_state_to_string(int state);
  37         // for debugging purposes only
  38
  39 #ifdef __cplusplus
  40 }
  41 #endif
  42
  43 #endif  /* _KERNEL_VM_VM_PRIV_H */