VirtualBox

source: vbox/trunk/src/VBox/VMM/VMMR0/GMMR0Internal.h@ 42064

Last change on this file since 42064 was 40054, checked in by vboxsync, 13 years ago

VMM,VMMDev: Page sharing cleanup.

  • Property svn:eol-style set to native
  • Property svn:keywords set to Id
File size: 2.6 KB
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1/* $Id: GMMR0Internal.h 40054 2012-02-09 15:37:11Z vboxsync $ */
2/** @file
3 * GMM - The Global Memory Manager, Internal Header.
4 */
5
6/*
7 * Copyright (C) 2007 Oracle Corporation
8 *
9 * This file is part of VirtualBox Open Source Edition (OSE), as
10 * available from http://www.virtualbox.org. This file is free software;
11 * you can redistribute it and/or modify it under the terms of the GNU
12 * General Public License (GPL) as published by the Free Software
13 * Foundation, in version 2 as it comes in the "COPYING" file of the
14 * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
15 * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
16 */
17
18#ifndef ___GMMR0Internal_h
19#define ___GMMR0Internal_h
20
21#include <VBox/vmm/gmm.h>
22#include <iprt/avl.h>
23
24
25/**
26 * Shared module registration info (per VM)
27 */
28typedef struct GMMSHAREDMODULEPERVM
29{
30 /** Tree node. */
31 AVLGCPTRNODECORE Core;
32 /** Pointer to global shared module info. */
33 PGMMSHAREDMODULE pGlobalModule;
34 /** Pointer to the region addresses.
35 *
36 * They can differe between VMs because of address space scrambling or
37 * simply different loading order. */
38 RTGCPTR64 aRegionsGCPtrs[1];
39} GMMSHAREDMODULEPERVM;
40/** Pointer to a GMMSHAREDMODULEPERVM. */
41typedef GMMSHAREDMODULEPERVM *PGMMSHAREDMODULEPERVM;
42
43
44/** Pointer to a GMM allocation chunk. */
45typedef struct GMMCHUNK *PGMMCHUNK;
46
47
48/** The GMMCHUNK::cFree shift count employed by gmmR0SelectFreeSetList. */
49#define GMM_CHUNK_FREE_SET_SHIFT 4
50/** Index of the list containing completely unused chunks.
51 * The code ASSUMES this is the last list. */
52#define GMM_CHUNK_FREE_SET_UNUSED_LIST (GMM_CHUNK_NUM_PAGES >> GMM_CHUNK_FREE_SET_SHIFT)
53
54/**
55 * A set of free chunks.
56 */
57typedef struct GMMCHUNKFREESET
58{
59 /** The number of free pages in the set. */
60 uint64_t cFreePages;
61 /** The generation ID for the set. This is incremented whenever
62 * something is linked or unlinked from this set. */
63 uint64_t idGeneration;
64 /** Chunks ordered by increasing number of free pages.
65 * In the final list the chunks are completely unused. */
66 PGMMCHUNK apLists[GMM_CHUNK_FREE_SET_UNUSED_LIST + 1];
67} GMMCHUNKFREESET;
68
69
70
71/**
72 * The per-VM GMM data.
73 */
74typedef struct GMMPERVM
75{
76 /** Free set for use in bound mode. */
77 GMMCHUNKFREESET Private;
78 /** The VM statistics. */
79 GMMVMSTATS Stats;
80 /** Shared module tree (per-vm). */
81 PAVLGCPTRNODECORE pSharedModuleTree;
82 /** Hints at the last chunk we allocated some memory from. */
83 uint32_t idLastChunkHint;
84} GMMPERVM;
85/** Pointer to the per-VM GMM data. */
86typedef GMMPERVM *PGMMPERVM;
87
88#endif
89
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