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/* $Id: MMInternal.h $ */
/** @file
* MM - Internal header file.
*/
/*
* Copyright (C) 2006-2023 Oracle and/or its affiliates.
*
* This file is part of VirtualBox base platform packages, as
* available from https://www.virtualbox.org.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation, in version 3 of the
* License.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, see <https://www.gnu.org/licenses>.
*
* SPDX-License-Identifier: GPL-3.0-only
*/
#ifndef VMM_INCLUDED_SRC_include_MMInternal_h
#define VMM_INCLUDED_SRC_include_MMInternal_h
#ifndef RT_WITHOUT_PRAGMA_ONCE
# pragma once
#endif
#include <VBox/cdefs.h>
#include <VBox/types.h>
#include <VBox/sup.h>
#include <VBox/vmm/stam.h>
#include <VBox/vmm/pdmcritsect.h>
#include <iprt/assert.h>
#include <iprt/avl.h>
#include <iprt/critsect.h>
/** @defgroup grp_mm_int Internals
* @ingroup grp_mm
* @internal
* @{
*/
/** @name MMR3Heap - VM Ring-3 Heap Internals
* @{
*/
/** @def MMR3HEAP_SIZE_ALIGNMENT
* The allocation size alignment of the MMR3Heap.
*/
#define MMR3HEAP_SIZE_ALIGNMENT 16
/** @def MMR3HEAP_WITH_STATISTICS
* Enable MMR3Heap statistics.
*/
#if !defined(MMR3HEAP_WITH_STATISTICS) && defined(VBOX_WITH_STATISTICS)
# define MMR3HEAP_WITH_STATISTICS
#endif
/**
* Heap statistics record.
* There is one global and one per allocation tag.
*/
typedef struct MMHEAPSTAT
{
/** Core avl node, key is the tag. */
AVLULNODECORE Core;
/** Pointer to the heap the memory belongs to. */
struct MMHEAP *pHeap;
#ifdef MMR3HEAP_WITH_STATISTICS
/** Number of bytes currently allocated. */
size_t cbCurAllocated;
/** Number of allocation. */
uint64_t cAllocations;
/** Number of reallocations. */
uint64_t cReallocations;
/** Number of frees. */
uint64_t cFrees;
/** Failures. */
uint64_t cFailures;
/** Number of bytes allocated (sum). */
uint64_t cbAllocated;
/** Number of bytes freed. */
uint64_t cbFreed;
#endif
} MMHEAPSTAT;
#if defined(MMR3HEAP_WITH_STATISTICS) && defined(IN_RING3)
AssertCompileMemberAlignment(MMHEAPSTAT, cAllocations, 8);
AssertCompileSizeAlignment(MMHEAPSTAT, 8);
#endif
/** Pointer to heap statistics record. */
typedef MMHEAPSTAT *PMMHEAPSTAT;
/**
* Additional heap block header for relating allocations to the VM.
*/
typedef struct MMHEAPHDR
{
/** Pointer to the next record. */
struct MMHEAPHDR *pNext;
/** Pointer to the previous record. */
struct MMHEAPHDR *pPrev;
/** Pointer to the heap statistics record.
* (Where the a PVM can be found.) */
PMMHEAPSTAT pStat;
/** Size of the allocation (including this header). */
size_t cbSize;
} MMHEAPHDR;
/** Pointer to MM heap header. */
typedef MMHEAPHDR *PMMHEAPHDR;
/** MM Heap structure. */
typedef struct MMHEAP
{
/** Lock protecting the heap. */
RTCRITSECT Lock;
/** Heap block list head. */
PMMHEAPHDR pHead;
/** Heap block list tail. */
PMMHEAPHDR pTail;
/** Heap per tag statistics tree. */
PAVLULNODECORE pStatTree;
/** The VM handle. */
PUVM pUVM;
/** Heap global statistics. */
MMHEAPSTAT Stat;
} MMHEAP;
/** Pointer to MM Heap structure. */
typedef MMHEAP *PMMHEAP;
/** @} */
/**
* MM Data (part of VM)
*/
typedef struct MM
{
/** Set if MMR3InitPaging has been called. */
bool fDoneMMR3InitPaging;
/** Padding. */
bool afPadding1[7];
/** Size of the base RAM in bytes. (The CFGM RamSize value.) */
uint64_t cbRamBase;
/** Number of bytes of RAM above 4GB, starting at address 4GB. */
uint64_t cbRamAbove4GB;
/** Size of the below 4GB RAM hole. */
uint32_t cbRamHole;
/** Number of bytes of RAM below 4GB, starting at address 0. */
uint32_t cbRamBelow4GB;
/** The number of base RAM pages that PGM has reserved (GMM).
* @remarks Shadow ROMs will be counted twice (RAM+ROM), so it won't be 1:1 with
* what the guest sees. */
uint64_t cBasePages;
/** The number of handy pages that PGM has reserved (GMM).
* These are kept out of cBasePages and thus out of the saved state. */
uint32_t cHandyPages;
/** The number of shadow pages PGM has reserved (GMM). */
uint32_t cShadowPages;
/** The number of fixed pages we've reserved (GMM). */
uint32_t cFixedPages;
/** Padding. */
uint32_t u32Padding2;
} MM;
/** Pointer to MM Data (part of VM). */
typedef MM *PMM;
/**
* MM data kept in the UVM.
*/
typedef struct MMUSERPERVM
{
/** Pointer to the MM R3 Heap. */
R3PTRTYPE(PMMHEAP) pHeap;
} MMUSERPERVM;
/** Pointer to the MM data kept in the UVM. */
typedef MMUSERPERVM *PMMUSERPERVM;
RT_C_DECLS_BEGIN
int mmR3UpdateReservation(PVM pVM);
int mmR3HeapCreateU(PUVM pUVM, PMMHEAP *ppHeap);
void mmR3HeapDestroy(PMMHEAP pHeap);
const char *mmGetTagName(MMTAG enmTag);
RT_C_DECLS_END
/** @} */
#endif /* !VMM_INCLUDED_SRC_include_MMInternal_h */
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