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svn path=/trunk/; revision=1256
This commit is contained in:
David Welch 2000-07-08 16:53:33 +00:00
parent fb7b00bd59
commit 68375602c1
6 changed files with 166 additions and 76 deletions
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7
reactos/ntoskrnl/include/internal/mm.h
View file

@ -86,9 +86,11 @@ typedef struct
} Data;
} MEMORY_AREA, *PMEMORY_AREA;
#define WSET_ADDRESSES_IN_PAGE (1020)
typedef struct _MWORKING_SET
{
PVOID Address[1020];
PVOID Address[WSET_ADDRESSES_IN_PAGE];
struct _MWORKING_SET* Next;
} MWORKING_SET, *PMWORKING_SET;
@ -261,6 +263,7 @@ typedef struct
ULONG NrUserPages;
ULONG NrFreePages;
ULONG NrDirtyPages;
ULONG NrLockedPages;
ULONG PagingRequestsInLastMinute;
ULONG PagingRequestsInLastFiveMinutes;
ULONG PagingRequestsInLastFifteenMinutes;
@ -283,6 +286,8 @@ VOID MmSetSavedSwapEntryPage(PVOID PhysicalAddress,
SWAPENTRY SavedSwapEntry);
SWAPENTRY MmGetSavedSwapEntryPage(PVOID PhysicalAddress);
VOID MmSetCleanPage(struct _EPROCESS* Process, PVOID Address);
VOID MmLockPage(PVOID PhysicalPage);
VOID MmUnlockPage(PVOID PhysicalPage);
#define MM_PHYSICAL_PAGE_MPW_PENDING (0x8)

5
reactos/ntoskrnl/io/cleanup.c
View file

@ -115,10 +115,11 @@ VOID IoReadWriteCompletion(PDEVICE_OBJECT DeviceObject,
}
ExFreePool(Irp->AssociatedIrp.SystemBuffer);
}
if (DeviceObject->Flags & DO_DIRECT_IO && !(Irp->Flags & IRP_PAGING_IO))
if (DeviceObject->Flags & DO_DIRECT_IO)
{
/* FIXME: Is the MDL destroyed on a paging i/o, check all cases. */
DPRINT("Tearing down MDL\n");
if (Irp->MdlAddress->MappedSystemVa!=NULL)
if (Irp->MdlAddress->MappedSystemVa != NULL)
{
MmUnmapLockedPages(Irp->MdlAddress->MappedSystemVa,
Irp->MdlAddress);

12
reactos/ntoskrnl/ke/main.c
View file

@ -1,4 +1,4 @@
/* $Id: main.c,v 1.52 2000/07/04 11:11:03 dwelch Exp $
/* $Id: main.c,v 1.53 2000/07/08 16:53:32 dwelch Exp $
*
* COPYRIGHT: See COPYING in the top level directory
* PROJECT: ReactOS kernel
@ -83,8 +83,16 @@ void _main (PLOADER_PARAMETER_BLOCK LoaderBlock)
*/
HalInitSystem (0, &KeLoaderBlock);
/*
* Display version number and copyright/warranty message
*/
HalDisplayString("Starting ReactOS "KERNEL_VERSION_STR" (Build "KERNEL_VERSION_BUILD_STR")\n");
HalDisplayString("Copyright 2000 (So who owns the copyright?).\n");
HalDisplayString("ReactOS is free software, covered by the GNU General Public License, and you\n");
HalDisplayString("are welcome to change it and/or distribute copies of it under certain\n");
HalDisplayString("conditions.\n");
HalDisplayString("There is absolutely no warranty for ReactOS.\n");
last_kernel_address = KERNEL_BASE;
for (i=0; i <= KeLoaderBlock.nr_files; i++)
{

35
reactos/ntoskrnl/mm/freelist.c
View file

@ -33,6 +33,7 @@ typedef struct _PHYSICAL_PAGE
ULONG ReferenceCount;
KEVENT Event;
SWAPENTRY SavedSwapEntry;
ULONG LockCount;
} PHYSICAL_PAGE, *PPHYSICAL_PAGE;
/* GLOBALS ****************************************************************/
@ -315,6 +316,40 @@ VOID MmDereferencePage(PVOID PhysicalAddress)
KeReleaseSpinLock(&PageListLock, oldIrql);
}
VOID MmLockPage(PVOID PhysicalAddress)
{
ULONG Start = (ULONG)PhysicalAddress / PAGESIZE;
KIRQL oldIrql;
DPRINT("MmReferencePage(PhysicalAddress %x)\n", PhysicalAddress);
if (((ULONG)PhysicalAddress) == 0)
{
KeBugCheck(0);
}
KeAcquireSpinLock(&PageListLock, &oldIrql);
MmPageArray[Start].LockCount++;
KeReleaseSpinLock(&PageListLock, oldIrql);
}
VOID MmUnlockPage(PVOID PhysicalAddress)
{
ULONG Start = (ULONG)PhysicalAddress / PAGESIZE;
KIRQL oldIrql;
DPRINT("MmReferencePage(PhysicalAddress %x)\n", PhysicalAddress);
if (((ULONG)PhysicalAddress) == 0)
{
KeBugCheck(0);
}
KeAcquireSpinLock(&PageListLock, &oldIrql);
MmPageArray[Start].LockCount--;
KeReleaseSpinLock(&PageListLock, oldIrql);
}
PVOID MmAllocPage(SWAPENTRY SavedSwapEntry)
{

171
reactos/ntoskrnl/mm/mdl.c
View file

@ -1,4 +1,4 @@
/* $Id: mdl.c,v 1.23 2000/07/07 10:30:56 dwelch Exp $
/* $Id: mdl.c,v 1.24 2000/07/08 16:53:33 dwelch Exp $
*
* COPYRIGHT: See COPYING in the top level directory
* PROJECT: ReactOS kernel
@ -24,14 +24,14 @@
PVOID MmGetMdlPageAddress(PMDL Mdl, PVOID Offset)
{
PULONG mdl_pages;
PULONG MdlPages;
mdl_pages = (PULONG)(Mdl + 1);
MdlPages = (PULONG)(Mdl + 1);
return((PVOID)mdl_pages[((ULONG)Offset) / PAGESIZE]);
return((PVOID)MdlPages[((ULONG)Offset) / PAGESIZE]);
}
VOID STDCALL MmUnlockPages(PMDL MemoryDescriptorList)
VOID STDCALL MmUnlockPages(PMDL Mdl)
/*
* FUNCTION: Unlocks the physical pages described by a given MDL
* ARGUMENTS:
@ -41,7 +41,36 @@ VOID STDCALL MmUnlockPages(PMDL MemoryDescriptorList)
* MDL is updated
*/
{
/* It is harmless to leave this one as a stub */
ULONG i;
PULONG MdlPages;
/*
* FIXME: I don't know whether this right, but it looks sensible
*/
if ((Mdl->MdlFlags & MDL_SOURCE_IS_NONPAGED_POOL) ||
(Mdl->MdlFlags & MDL_IO_PAGE_READ))
{
return;
}
/*
* FIXME: Seems sensible
*/
if (!(Mdl->MdlFlags & MDL_PAGES_LOCKED))
{
return;
}
MmLockAddressSpace(&Mdl->Process->AddressSpace);
MdlPages = (PULONG)(Mdl + 1);
for (i=0; i<(PAGE_ROUND_UP(Mdl->ByteCount+Mdl->ByteOffset)/PAGESIZE); i++)
{
MmUnlockPage((PVOID)MdlPages[i]);
MmDereferencePage((PVOID)MdlPages[i]);
}
MmUnlockAddressSpace(&Mdl->Process->AddressSpace);
Mdl->MdlFlags = Mdl->MdlFlags & (~MDL_PAGES_LOCKED);
}
PVOID STDCALL MmMapLockedPages(PMDL Mdl, KPROCESSOR_MODE AccessMode)
@ -52,41 +81,46 @@ PVOID STDCALL MmMapLockedPages(PMDL Mdl, KPROCESSOR_MODE AccessMode)
* AccessMode = Specifies the access mode in which to map the MDL
* RETURNS: The base virtual address that maps the locked pages for the
* range described by the MDL
* FIXME: What does AccessMode do?
*/
{
PVOID base = NULL;
unsigned int i;
ULONG* mdl_pages=NULL;
PVOID Base;
ULONG i;
PULONG MdlPages;
MEMORY_AREA* Result;
NTSTATUS Status;
DPRINT("MmMapLockedPages(Mdl %x, AccessMode %x)\n", Mdl, AccessMode);
DPRINT("Mdl->ByteCount %x\n",Mdl->ByteCount);
DPRINT("PAGE_ROUND_UP(Mdl->ByteCount)/PAGESIZE) %x\n",
PAGE_ROUND_UP(Mdl->ByteCount)/PAGESIZE);
MmLockAddressSpace(MmGetKernelAddressSpace());
MmCreateMemoryArea(NULL,
MmGetKernelAddressSpace(),
MEMORY_AREA_MDL_MAPPING,
&base,
Mdl->ByteCount + Mdl->ByteOffset,
0,
&Result);
CHECKPOINT;
mdl_pages = (ULONG *)(Mdl + 1);
Base = NULL;
Status = MmCreateMemoryArea(NULL,
MmGetKernelAddressSpace(),
MEMORY_AREA_MDL_MAPPING,
&Base,
Mdl->ByteCount + Mdl->ByteOffset,
0,
&Result);
if (!NT_SUCCESS(Status))
{
MmUnlockAddressSpace(MmGetKernelAddressSpace());
KeBugCheck(0);
return(STATUS_SUCCESS);
}
MdlPages = (PULONG)(Mdl + 1);
for (i=0; i<(PAGE_ROUND_UP(Mdl->ByteCount+Mdl->ByteOffset)/PAGESIZE); i++)
{
DPRINT("Writing %x with physical address %x\n",
base+(i*PAGESIZE),mdl_pages[i]);
MmSetPage(NULL,
(PVOID)((DWORD)base+(i*PAGESIZE)),
(PVOID)((ULONG)Base+(i*PAGESIZE)),
PAGE_READWRITE,
mdl_pages[i]);
MdlPages[i]);
}
DPRINT("base %x\n",base);
MmUnlockAddressSpace(MmGetKernelAddressSpace());
Mdl->MdlFlags = Mdl->MdlFlags | MDL_MAPPED_TO_SYSTEM_VA;
Mdl->MappedSystemVa = base + Mdl->ByteOffset;
return(base + Mdl->ByteOffset);
Mdl->MappedSystemVa = Base + Mdl->ByteOffset;
return(Base + Mdl->ByteOffset);
}
@ -99,34 +133,36 @@ VOID STDCALL MmUnmapLockedPages(PVOID BaseAddress, PMDL Mdl)
*/
{
DPRINT("MmUnmapLockedPages(BaseAddress %x, Mdl %x)\n", Mdl, BaseAddress);
(void)MmFreeMemoryArea(MmGetKernelAddressSpace(),
MmLockAddressSpace(MmGetKernelAddressSpace());
(VOID)MmFreeMemoryArea(MmGetKernelAddressSpace(),
BaseAddress - Mdl->ByteOffset,
Mdl->ByteCount,
FALSE);
Mdl->MdlFlags = Mdl->MdlFlags & ~MDL_MAPPED_TO_SYSTEM_VA;
Mdl->MappedSystemVa = NULL;
DPRINT("MmUnmapLockedPages() finished\n");
MmUnlockAddressSpace(MmGetKernelAddressSpace());
}
VOID MmBuildMdlFromPages(PMDL Mdl, PULONG Pages)
{
ULONG i;
PULONG mdl_pages;
PULONG MdlPages;
mdl_pages = (PULONG)(Mdl + 1);
Mdl->MdlFlags = Mdl->MdlFlags |
(MDL_PAGES_LOCKED | MDL_IO_PAGE_READ);
MdlPages = (PULONG)(Mdl + 1);
for (i=0;i<(PAGE_ROUND_UP(Mdl->ByteOffset+Mdl->ByteCount)/PAGESIZE);i++)
{
mdl_pages[i] = Pages[i];
DPRINT("mdl_pages[i] %x\n",mdl_pages[i]);
MdlPages[i] = Pages[i];
}
}
VOID STDCALL MmProbeAndLockPages (PMDL Mdl,
KPROCESSOR_MODE AccessMode,
LOCK_OPERATION Operation)
VOID STDCALL MmProbeAndLockPages (PMDL Mdl,
KPROCESSOR_MODE AccessMode,
LOCK_OPERATION Operation)
/*
* FUNCTION: Probes the specified pages, makes them resident and locks them
* ARGUMENTS:
@ -135,14 +171,20 @@ VOID STDCALL MmProbeAndLockPages (PMDL Mdl,
* Operation = Operation to probe for
*/
{
ULONG* mdl_pages=NULL;
int i;
MEMORY_AREA* marea;
PVOID Address;
PULONG MdlPages;
ULONG i;
PMEMORY_AREA MArea;
PMADDRESS_SPACE AddressSpace;
DPRINT("MmProbeAndLockPages(Mdl %x)\n",Mdl);
DPRINT("StartVa %x\n",Mdl->StartVa);
DPRINT("MmProbeAndLockPages(Mdl %x)\n", Mdl);
/*
* FIXME: Check behaviour against NT
*/
if (Mdl->MdlFlags & MDL_PAGES_LOCKED)
{
return;
}
if (Mdl->StartVa > (PVOID)KERNEL_BASE)
{
@ -153,38 +195,36 @@ VOID STDCALL MmProbeAndLockPages (PMDL Mdl,
AddressSpace = &Mdl->Process->AddressSpace;
}
MmLockAddressSpace(AddressSpace);
marea = MmOpenMemoryAreaByAddress(AddressSpace,
MArea = MmOpenMemoryAreaByAddress(AddressSpace,
Mdl->StartVa);
DPRINT("marea %x\n",marea);
/*
* Check the area is valid
*/
if (marea==NULL )
if (MArea == NULL)
{
DbgPrint("(%s:%d) Area is invalid\n",__FILE__,__LINE__);
MmUnlockAddressSpace(AddressSpace);
/* FIXME: ExRaiseStatus doesn't do anything sensible at the moment */
ExRaiseStatus(STATUS_INVALID_PARAMETER);
}
/*
* Lock the memory area
* (We can't allow it to be freed while an I/O operation to it is
* ongoing)
*/
/*
* Lock the pages
*/
mdl_pages = (ULONG *)(Mdl + 1);
MdlPages = (ULONG *)(Mdl + 1);
for (i=0;i<(PAGE_ROUND_UP(Mdl->ByteOffset+Mdl->ByteCount)/PAGESIZE);i++)
{
PVOID Address;
Address = Mdl->StartVa + (i*PAGESIZE);
mdl_pages[i] = (MmGetPhysicalAddress(Address)).u.LowPart;
DPRINT("mdl_pages[i] %x\n",mdl_pages[i]);
MdlPages[i] = (MmGetPhysicalAddress(Address)).u.LowPart;
MmReferencePage((PVOID)MdlPages[i]);
MmLockPage((PVOID)MdlPages[i]);
}
MmUnlockAddressSpace(AddressSpace);
Mdl->MdlFlags = Mdl->MdlFlags | MDL_PAGES_LOCKED;
}
@ -198,9 +238,10 @@ ULONG STDCALL MmSizeOfMdl (PVOID Base,
* Length = number of bytes to map
*/
{
unsigned int len=ADDRESS_AND_SIZE_TO_SPAN_PAGES(Base,Length);
ULONG len;
len = ADDRESS_AND_SIZE_TO_SPAN_PAGES(Base,Length);
DPRINT("MmSizeOfMdl() %x\n",sizeof(MDL)+(len*sizeof(ULONG)));
return(sizeof(MDL)+(len*sizeof(ULONG)));
}
@ -244,7 +285,7 @@ PMDL STDCALL MmCreateMdl (PMDL MemoryDescriptorList,
Size = MmSizeOfMdl(Base,Length);
MemoryDescriptorList = (PMDL)ExAllocatePool(NonPagedPool,Size);
if (MemoryDescriptorList==NULL)
if (MemoryDescriptorList == NULL)
{
return(NULL);
}
@ -256,13 +297,13 @@ PMDL STDCALL MmCreateMdl (PMDL MemoryDescriptorList,
}
VOID
STDCALL
MmMapMemoryDumpMdl (
PVOID Unknown0
)
VOID STDCALL MmMapMemoryDumpMdl (PVOID Unknown0)
/*
* FIXME: Has something to do with crash dumps. Do we want to implement
* this?
*/
{
UNIMPLEMENTED;
UNIMPLEMENTED;
}
/* EOF */

12
reactos/ntoskrnl/mm/wset.c
View file

@ -1,4 +1,4 @@
/* $Id: wset.c,v 1.3 2000/07/07 10:30:57 dwelch Exp $
/* $Id: wset.c,v 1.4 2000/07/08 16:53:33 dwelch Exp $
*
* COPYRIGHT: See COPYING in the top level directory
* PROJECT: ReactOS kernel
@ -124,7 +124,7 @@ ULONG MmTrimWorkingSet(PEPROCESS Process,
}
else
{
j = (j + 1) % 1020;
j = (j + 1) % WSET_ADDRESSES_IN_PAGE;
i++;
}
@ -163,11 +163,11 @@ VOID MmRemovePageFromWorkingSet(PEPROCESS Process,
}
else
{
AddressSpace->WorkingSetLruLast = 1020;
AddressSpace->WorkingSetLruLast = WSET_ADDRESSES_IN_PAGE;
}
return;
}
j = (j + 1) % 1020;
j = (j + 1) % WSET_ADDRESSES_IN_PAGE;
}
KeBugCheck(0);
}
@ -180,7 +180,7 @@ BOOLEAN MmAddPageToWorkingSet(PEPROCESS Process,
AddressSpace = &Process->AddressSpace;
if (((AddressSpace->WorkingSetLruLast + 1) % 1020) ==
if (((AddressSpace->WorkingSetLruLast + 1) % WSET_ADDRESSES_IN_PAGE) ==
AddressSpace->WorkingSetLruFirst)
{
return(FALSE);
@ -191,7 +191,7 @@ BOOLEAN MmAddPageToWorkingSet(PEPROCESS Process,
WSet->Address[AddressSpace->WorkingSetLruLast] = Address;
AddressSpace->WorkingSetLruLast =
(AddressSpace->WorkingSetLruLast + 1) % 1024;
(AddressSpace->WorkingSetLruLast + 1) % WSET_ADDRESSES_IN_PAGE;
AddressSpace->WorkingSetSize++;
return(TRUE);