mmsup.c File Reference

#include <ntoskrnl.h>
#include <debug.h>
#include <mm/ARM3/miarm.h>

Include dependency graph for mmsup.c:

Go to the source code of this file.

Macros
#define	NDEBUG
#define	MODULE_INVOLVED_IN_ARM3

Functions
NTSTATUS NTAPI	MmMapUserAddressesToPage (IN PVOID BaseAddress, IN SIZE_T NumberOfBytes, IN PVOID PageAddress)
NTSTATUS NTAPI	MmAdjustWorkingSetSize (IN SIZE_T WorkingSetMinimumInBytes, IN SIZE_T WorkingSetMaximumInBytes, IN ULONG SystemCache, IN BOOLEAN IncreaseOkay)
BOOLEAN NTAPI	MmSetAddressRangeModified (IN PVOID Address, IN SIZE_T Length)
BOOLEAN NTAPI	MmIsAddressValid (IN PVOID VirtualAddress)
BOOLEAN NTAPI	MmIsNonPagedSystemAddressValid (IN PVOID VirtualAddress)
NTSTATUS NTAPI	MmSetBankedSection (IN HANDLE ProcessHandle, IN PVOID VirtualAddress, IN ULONG BankLength, IN BOOLEAN ReadWriteBank, IN PVOID BankRoutine, IN PVOID Context)
BOOLEAN NTAPI	MmIsRecursiveIoFault (VOID)
BOOLEAN NTAPI	MmIsThisAnNtAsSystem (VOID)
MM_SYSTEMSIZE NTAPI	MmQuerySystemSize (VOID)
NTSTATUS NTAPI	MmCreateMirror (VOID)

Variables
SIZE_T	MmMinimumWorkingSetSize
SIZE_T	MmMaximumWorkingSetSize
SIZE_T	MmPagesAboveWsMinimum

Macro Definition Documentation

MODULE_INVOLVED_IN_ARM3

#define MODULE_INVOLVED_IN_ARM3

Definition at line 15 of file mmsup.c.

NDEBUG

#define NDEBUG

Definition at line 12 of file mmsup.c.

Function Documentation

MmAdjustWorkingSetSize()

NTSTATUS NTAPI MmAdjustWorkingSetSize	(	IN SIZE_T	WorkingSetMinimumInBytes,
		IN SIZE_T	WorkingSetMaximumInBytes,
		IN ULONG	SystemCache,
		IN BOOLEAN	IncreaseOkay
	)

Definition at line 44 of file mmsup.c.

{
    SIZE_T MinimumWorkingSetSize, MaximumWorkingSetSize;
    SSIZE_T Delta;
    PMMSUPPORT Ws;
    NTSTATUS Status;
 
    /* Check for special case: empty the working set */
    if ((WorkingSetMinimumInBytes == -1) &&
        (WorkingSetMaximumInBytes == -1))
    {
        UNIMPLEMENTED;
        return STATUS_NOT_IMPLEMENTED;
    }
 
    /* Assume success */
    Status = STATUS_SUCCESS;
 
    /* Get the working set and lock it */
    Ws = &PsGetCurrentProcess()->Vm;
    MiLockWorkingSet(PsGetCurrentThread(), Ws);
 
    /* Calculate the actual minimum and maximum working set size to set */
    MinimumWorkingSetSize = (WorkingSetMinimumInBytes != 0) ?
        (WorkingSetMinimumInBytes / PAGE_SIZE) : Ws->MinimumWorkingSetSize;
    MaximumWorkingSetSize = (WorkingSetMaximumInBytes != 0) ?
        (WorkingSetMaximumInBytes / PAGE_SIZE) : Ws->MaximumWorkingSetSize;
 
    /* Check if the new maximum exceeds the global maximum */
    if (MaximumWorkingSetSize > MmMaximumWorkingSetSize)
    {
        MaximumWorkingSetSize = MmMaximumWorkingSetSize;
        Status = STATUS_WORKING_SET_LIMIT_RANGE;
    }
 
    /* Check if the new minimum is below the global minimum */
    if (MinimumWorkingSetSize < MmMinimumWorkingSetSize)
    {
        MinimumWorkingSetSize = MmMinimumWorkingSetSize;
        Status = STATUS_WORKING_SET_LIMIT_RANGE;
    }
 
    /* Check if the new minimum exceeds the new maximum */
    if (MinimumWorkingSetSize > MaximumWorkingSetSize)
    {
        DPRINT1("MinimumWorkingSetSize (%lu) > MaximumWorkingSetSize (%lu)\n",
                MinimumWorkingSetSize, MaximumWorkingSetSize);
        Status = STATUS_BAD_WORKING_SET_LIMIT;
        goto Cleanup;
    }
 
    /* Calculate the minimum WS size adjustment and check if we increase */
    Delta = MinimumWorkingSetSize - Ws->MinimumWorkingSetSize;
    if (Delta > 0)
    {
        /* Is increasing ok? */
        if (!IncreaseOkay)
        {
            DPRINT1("Privilege for WS size increase not held\n");
            Status = STATUS_PRIVILEGE_NOT_HELD;
            goto Cleanup;
        }
 
        /* Check if the number of available pages is large enough */
        if (((SIZE_T)Delta / 1024) > (MmAvailablePages - 128))
        {
            DPRINT1("Not enough available pages\n");
            Status = STATUS_INSUFFICIENT_RESOURCES;
            goto Cleanup;
        }
 
        /* Check if there are enough resident available pages */
        if ((SIZE_T)Delta >
            (MmResidentAvailablePages - MmSystemLockPagesCount - 256))
        {
            DPRINT1("Not enough resident pages\n");
            Status = STATUS_INSUFFICIENT_RESOURCES;
            goto Cleanup;
        }
    }
 
    /* Update resident available pages */
    if (Delta != 0)
    {
        InterlockedExchangeAddSizeT(&MmResidentAvailablePages, -Delta);
    }
 
    /* Calculate new pages above minimum WS size */
    Delta += max((SSIZE_T)Ws->WorkingSetSize - MinimumWorkingSetSize, 0);
 
    /* Subtract old pages above minimum WS size */
    Delta -= max((SSIZE_T)Ws->WorkingSetSize - Ws->MinimumWorkingSetSize, 0);
 
    /* If it changed, add it to the global variable */
    if (Delta != 0)
    {
        InterlockedExchangeAddSizeT(&MmPagesAboveWsMinimum, Delta);
    }
 
    /* Set the new working set size */
    Ws->MinimumWorkingSetSize = MinimumWorkingSetSize;
    Ws->MaximumWorkingSetSize = MaximumWorkingSetSize;
 
Cleanup:
 
    /* Unlock the working set and return the status */
    MiUnlockWorkingSet(PsGetCurrentThread(), Ws);
    return Status;
}

Referenced by PspSetQuotaLimits().

MmCreateMirror()

NTSTATUS NTAPI MmCreateMirror

(

VOID

)

Definition at line 265 of file mmsup.c.

{
    UNIMPLEMENTED;
    return STATUS_NOT_IMPLEMENTED;
}

MmIsAddressValid()

BOOLEAN NTAPI MmIsAddressValid

(

IN PVOID

VirtualAddress

)

Definition at line 174 of file mmsup.c.

{
#if _MI_PAGING_LEVELS >= 4
    /* Check if the PXE is valid */
    if (MiAddressToPxe(VirtualAddress)->u.Hard.Valid == 0) return FALSE;
#endif
 
#if _MI_PAGING_LEVELS >= 3
    /* Check if the PPE is valid */
    if (MiAddressToPpe(VirtualAddress)->u.Hard.Valid == 0) return FALSE;
#endif
 
#if _MI_PAGING_LEVELS >= 2
    /* Check if the PDE is valid */
    if (MiAddressToPde(VirtualAddress)->u.Hard.Valid == 0) return FALSE;
#endif
 
    /* Check if the PTE is valid */
    if (MiAddressToPte(VirtualAddress)->u.Hard.Valid == 0) return FALSE;
 
    /* This address is valid now, but it will only stay so if the caller holds
     * the PFN lock */
    return TRUE;
}

Referenced by KdbCommand_Gdi_dumpht(), KdbCommand_Gdi_entry(), KdbCommand_Gdi_handle(), KdbIsMemoryValid(), marshal_nfs41_header(), marshal_nfs41_mount(), MiBuildPfnDatabaseFromPages(), MiDbgUnTranslatePhysicalAddress(), MiMakeSystemAddressValid(), MiMakeSystemAddressValidPfn(), MiSessionAddProcess(), MiSessionCreateInternal(), MiSessionRemoveProcess(), MiSetupPfnForPageTable(), MmCommitSessionMappedView(), MmDbgCopyMemory(), MmIsNonPagedSystemAddressValid(), MmMapViewInSessionSpace(), MmTrimUserMemory(), MmUnmapViewInSessionSpace(), and nfs41_invalidate_cache().

MmIsNonPagedSystemAddressValid()

BOOLEAN NTAPI MmIsNonPagedSystemAddressValid

(

IN PVOID

VirtualAddress

)

Definition at line 204 of file mmsup.c.

{
    DPRINT1("WARNING: %s returns bogus result\n", __FUNCTION__);
    return MmIsAddressValid(VirtualAddress);
}

Referenced by Ext2CreateMdl().

MmIsRecursiveIoFault()

BOOLEAN NTAPI MmIsRecursiveIoFault

(

VOID

)

Definition at line 231 of file mmsup.c.

{
    PETHREAD Thread = PsGetCurrentThread();
 
    //
    // If any of these is true, this is a recursive fault
    //
    return ((Thread->DisablePageFaultClustering) | (Thread->ForwardClusterOnly));
}

MmIsThisAnNtAsSystem()

BOOLEAN NTAPI MmIsThisAnNtAsSystem

(

VOID

)

Definition at line 246 of file mmsup.c.

{
    /* Return if this is a server system */
    return MmProductType & 0xFF;
}

Referenced by FsRtlInitializeTunnels(), PsChangeQuantumTable(), and UDFInitializeZones().

MmMapUserAddressesToPage()

NTSTATUS NTAPI MmMapUserAddressesToPage	(	IN PVOID	BaseAddress,
		IN SIZE_T	NumberOfBytes,
		IN PVOID	PageAddress
	)

Definition at line 31 of file mmsup.c.

{
    UNIMPLEMENTED;
    return STATUS_NOT_IMPLEMENTED;
}

MmQuerySystemSize()

MM_SYSTEMSIZE NTAPI MmQuerySystemSize

(

VOID

)

Definition at line 257 of file mmsup.c.

{
    /* Return the low, medium or high memory system type */
    return MmSystemSize;
}

Referenced by CcInitializeCacheManager(), CdInitializeGlobalData(), DriverEntry(), PspInitPhase0(), RxInitializeWorkQueueDispatcher(), and UDFInitializeZones().

MmSetAddressRangeModified()

BOOLEAN NTAPI MmSetAddressRangeModified	(	IN PVOID	Address,
		IN SIZE_T	Length
	)

Definition at line 162 of file mmsup.c.

{
   UNIMPLEMENTED;
   return FALSE;
}

MmSetBankedSection()

NTSTATUS NTAPI MmSetBankedSection	(	IN HANDLE	ProcessHandle,
		IN PVOID	VirtualAddress,
		IN ULONG	BankLength,
		IN BOOLEAN	ReadWriteBank,
		IN PVOID	BankRoutine,
		IN PVOID	Context
	)

Definition at line 215 of file mmsup.c.

{
    UNIMPLEMENTED;
    return STATUS_NOT_IMPLEMENTED;
}

Variable Documentation

MmMaximumWorkingSetSize

SIZE_T MmMaximumWorkingSetSize

Definition at line 21 of file mmsup.c.

Referenced by MmAdjustWorkingSetSize().

MmMinimumWorkingSetSize

SIZE_T MmMinimumWorkingSetSize

Definition at line 20 of file mmsup.c.

Referenced by MmAdjustWorkingSetSize().

MmPagesAboveWsMinimum

SIZE_T MmPagesAboveWsMinimum

Definition at line 22 of file mmsup.c.

Referenced by MmAdjustWorkingSetSize().