| 1 | /* $Id: GMMR0Internal.h 29424 2010-05-12 15:11:09Z vboxsync $ */
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| 2 | /** @file
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| 3 | * GMM - The Global Memory Manager, Internal Header.
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| 4 | */
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| 5 |
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| 6 | /*
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| 7 | * Copyright (C) 2007 Oracle Corporation
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| 8 | *
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| 9 | * This file is part of VirtualBox Open Source Edition (OSE), as
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| 10 | * available from http://www.virtualbox.org. This file is free software;
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| 11 | * you can redistribute it and/or modify it under the terms of the GNU
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| 12 | * General Public License (GPL) as published by the Free Software
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| 13 | * Foundation, in version 2 as it comes in the "COPYING" file of the
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| 14 | * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
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| 15 | * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
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| 16 | */
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| 17 |
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| 18 | #ifndef ___GMMR0Internal_h
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| 19 | #define ___GMMR0Internal_h
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| 20 |
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| 21 | #include <VBox/gmm.h>
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| 22 | #include <iprt/avl.h>
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| 23 |
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| 24 | /**
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| 25 | * The allocation sizes.
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| 26 | */
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| 27 | typedef struct GMMVMSIZES
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| 28 | {
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| 29 | /** The number of pages of base memory.
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| 30 | * This is the sum of RAM, ROMs and handy pages. */
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| 31 | uint64_t cBasePages;
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| 32 | /** The number of pages for the shadow pool. (Can be sequeezed for memory.) */
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| 33 | uint32_t cShadowPages;
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| 34 | /** The number of pages for fixed allocations like MMIO2 and the hyper heap. */
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| 35 | uint32_t cFixedPages;
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| 36 | } GMMVMSIZES;
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| 37 | /** Pointer to a GMMVMSIZES. */
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| 38 | typedef GMMVMSIZES *PGMMVMSIZES;
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| 39 |
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| 40 | /**
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| 41 | * Shared module registration info (per VM)
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| 42 | */
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| 43 | typedef struct GMMSHAREDMODULEPERVM
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| 44 | {
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| 45 | /** Tree node. */
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| 46 | AVLGCPTRNODECORE Core;
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| 47 |
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| 48 | /** Pointer to global shared module info. */
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| 49 | PGMMSHAREDMODULE pGlobalModule;
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| 50 |
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| 51 | /** Set if another VM registered a different shared module at the same base address. */
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| 52 | bool fCollision;
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| 53 | /** Alignment. */
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| 54 | bool bAlignment[7];
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| 55 | } GMMSHAREDMODULEPERVM;
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| 56 | /** Pointer to a GMMSHAREDMODULEPERVM. */
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| 57 | typedef GMMSHAREDMODULEPERVM *PGMMSHAREDMODULEPERVM;
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| 58 |
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| 59 | /**
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| 60 | * The per-VM GMM data.
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| 61 | */
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| 62 | typedef struct GMMPERVM
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| 63 | {
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| 64 | /** The reservations. */
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| 65 | GMMVMSIZES Reserved;
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| 66 | /** The actual allocations.
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| 67 | * This includes both private and shared page allocations. */
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| 68 | GMMVMSIZES Allocated;
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| 69 |
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| 70 | /** The current number of private pages. */
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| 71 | uint64_t cPrivatePages;
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| 72 | /** The current number of shared pages. */
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| 73 | uint64_t cSharedPages;
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| 74 | /** The current over-comitment policy. */
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| 75 | GMMOCPOLICY enmPolicy;
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| 76 | /** The VM priority for arbitrating VMs in low and out of memory situation.
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| 77 | * Like which VMs to start sequeezing first. */
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| 78 | GMMPRIORITY enmPriority;
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| 79 |
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| 80 | /** The current number of ballooned pages. */
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| 81 | uint64_t cBalloonedPages;
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| 82 | /** The max number of pages that can be ballooned. */
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| 83 | uint64_t cMaxBalloonedPages;
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| 84 | /** The number of pages we've currently requested the guest to give us.
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| 85 | * This is 0 if no pages currently requested. */
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| 86 | uint64_t cReqBalloonedPages;
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| 87 | /** The number of pages the guest has given us in response to the request.
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| 88 | * This is not reset on request completed and may be used in later decisions. */
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| 89 | uint64_t cReqActuallyBalloonedPages;
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| 90 | /** The number of pages we've currently requested the guest to take back. */
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| 91 | uint64_t cReqDeflatePages;
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| 92 |
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| 93 | /** Shared module tree (per-vm). */
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| 94 | PAVLGCPTRNODECORE pSharedModuleTree;
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| 95 |
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| 96 | /** Whether ballooning is enabled or not. */
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| 97 | bool fBallooningEnabled;
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| 98 |
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| 99 | /** Whether shared paging is enabled or not. */
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| 100 | bool fSharedPagingEnabled;
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| 101 |
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| 102 | /** Whether the VM is allowed to allocate memory or not.
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| 103 | * This is used when the reservation update request fails or when the VM has
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| 104 | * been told to suspend/save/die in an out-of-memory case. */
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| 105 | bool fMayAllocate;
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| 106 | } GMMPERVM;
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| 107 | /** Pointer to the per-VM GMM data. */
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| 108 | typedef GMMPERVM *PGMMPERVM;
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| 109 |
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| 110 | #endif
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| 111 |
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