| 1 | /* $Id: OS2KPG.h,v 1.2 2001-02-11 14:59:56 bird Exp $
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| 2 | *
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| 3 | * OS/2 kernel page manager stuff.
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| 4 | *
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| 5 | * Copyright (c) 2001 knut st. osmundsen (knut.stange.osmundsen@mynd.no)
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| 6 | *
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| 7 | * Project Odin Software License can be found in LICENSE.TXT
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| 8 | *
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| 9 | */
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| 10 | #ifndef _OS2KPG_H_
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| 11 | #define _OS2KPG_H_
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| 12 |
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| 13 | /**
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| 14 | * Paging enabled flag.
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| 15 | * Two states:<ul>
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| 16 | * <li> 1 - Swapping enabled.
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| 17 | * <li> 0 - Swapping disabled. </ul>
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| 18 | */
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| 19 | extern int * pPGSwapEnabled;
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| 20 | #define PGSwapEnabled (*pPGSwapEnabled)
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| 21 |
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| 22 | /**
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| 23 | * Count of physical pages - hope this is correct.
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| 24 | */
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| 25 | extern int * ppgPhysPages;
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| 26 | #define pgPhysPages (*ppgPhysPages)
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| 27 |
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| 28 | /**
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| 29 | * Pointer to top of physical memory (physical address).
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| 30 | */
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| 31 | extern PULONG ppgPhysMax;
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| 32 | #define pgPhysMax (*ppgPhysMax)
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| 33 |
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| 34 | /**
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| 35 | * Count of resident pages.
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| 36 | */
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| 37 | extern int * ppgResidentPages;
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| 38 | #define pgResidentPages (*ppgResidentPages)
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| 39 |
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| 40 | /**
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| 41 | * Count of swappable pages which is currently present in memory.
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| 42 | */
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| 43 | extern int * ppgSwappablePages;
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| 44 | #define pgSwappablePages (*ppgSwappablePages)
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| 45 |
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| 46 | /**
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| 47 | * Count of discardable pages which is currently present in memory.
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| 48 | */
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| 49 | extern int * ppgDiscardableInmem;
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| 50 | #define pgDiscardableInmem (*ppgDiscardableInmem)
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| 51 |
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| 52 | /**
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| 53 | * Count of discardable pages allocated.
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| 54 | */
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| 55 | extern int * ppgDiscardablePages;
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| 56 | #define pgDiscardablePages (*ppgDiscardablePages)
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| 57 |
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| 58 | /**
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| 59 | * Count of page faults since bootup.
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| 60 | */
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| 61 | extern PULONG ppgcPageFaults;
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| 62 | #define pgcPageFaults (*ppgcPageFaults)
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| 63 |
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| 64 | /**
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| 65 | * Count of page faults currently being processed.
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| 66 | */
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| 67 | extern PULONG ppgcPageFaultsActive;
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| 68 | #define pgcPageFaultsActive (*ppgcPageFaultsActive)
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| 69 |
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| 70 |
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| 71 | /**
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| 72 | * Returns the number of bytes of physical memory available.
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| 73 | */
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| 74 | ULONG KRNLCALL PGPhysAvail(void);
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| 75 |
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| 76 |
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| 77 | /**
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| 78 | * Returns the number of pageframes currently in use.
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| 79 | */
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| 80 | ULONG KRNLCALL PGPhysPresent(void);
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| 81 |
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| 82 | #endif
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| 83 |
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