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https://github.com/reactos/reactos.git
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Git conversion: Make reactos the root directory, move rosapps, rostests, wallpapers into modules, and delete rossubsys.
This commit is contained in:
Colin Finck
parent
b94e2d8ca0
commit
c2c66aff7d
24198 changed files with 0 additions and 37285 deletions
363
ntoskrnl/cache/cachesub.c
vendored
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363
ntoskrnl/cache/cachesub.c
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@ -0,0 +1,363 @@
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/*
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* COPYRIGHT: See COPYING in the top level directory
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* PROJECT: ReactOS Kernel
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* FILE: ntoskrnl/cache/cachesub.c
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* PURPOSE: Logging and configuration routines
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* PROGRAMMERS: Alex Ionescu (alex.ionescu@reactos.org)
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* Art Yerkes
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*/
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/* INCLUDES *******************************************************************/
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#include <ntoskrnl.h>
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#include "newcc.h"
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#include "section/newmm.h"
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#define NDEBUG
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#include <debug.h>
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/* STRUCTURES *****************************************************************/
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typedef struct _WORK_QUEUE_WITH_READ_AHEAD
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{
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WORK_QUEUE_ITEM WorkItem;
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PFILE_OBJECT FileObject;
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LARGE_INTEGER FileOffset;
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ULONG Length;
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} WORK_QUEUE_WITH_READ_AHEAD, *PWORK_QUEUE_WITH_READ_AHEAD;
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/* FUNCTIONS ******************************************************************/
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PDEVICE_OBJECT
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NTAPI
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MmGetDeviceObjectForFile(IN PFILE_OBJECT FileObject);
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VOID
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NTAPI
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CcSetReadAheadGranularity(IN PFILE_OBJECT FileObject,
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IN ULONG Granularity)
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{
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PNOCC_CACHE_MAP Map = (PNOCC_CACHE_MAP)FileObject->SectionObjectPointer->SharedCacheMap;
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if (Map)
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{
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Map->ReadAheadGranularity = Granularity;
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}
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}
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VOID
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NTAPI
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CcpReadAhead(PVOID Context)
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{
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LARGE_INTEGER Offset;
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PWORK_QUEUE_WITH_READ_AHEAD WorkItem = (PWORK_QUEUE_WITH_READ_AHEAD)Context;
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PNOCC_CACHE_MAP Map = (PNOCC_CACHE_MAP)WorkItem->FileObject->SectionObjectPointer->SharedCacheMap;
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DPRINT1("Reading ahead %08x%08x:%x %wZ\n",
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WorkItem->FileOffset.HighPart,
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WorkItem->FileOffset.LowPart,
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WorkItem->Length,
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&WorkItem->FileObject->FileName);
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Offset.HighPart = WorkItem->FileOffset.HighPart;
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Offset.LowPart = PAGE_ROUND_DOWN(WorkItem->FileOffset.LowPart);
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if (Map)
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{
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PLIST_ENTRY ListEntry;
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volatile char *chptr;
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PNOCC_BCB Bcb;
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for (ListEntry = Map->AssociatedBcb.Flink;
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ListEntry != &Map->AssociatedBcb;
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ListEntry = ListEntry->Flink)
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{
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Bcb = CONTAINING_RECORD(ListEntry, NOCC_BCB, ThisFileList);
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if ((Offset.QuadPart + WorkItem->Length < Bcb->FileOffset.QuadPart) ||
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(Bcb->FileOffset.QuadPart + Bcb->Length < Offset.QuadPart))
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continue;
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for (chptr = Bcb->BaseAddress, Offset = Bcb->FileOffset;
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chptr < ((PCHAR)Bcb->BaseAddress) + Bcb->Length &&
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Offset.QuadPart <
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WorkItem->FileOffset.QuadPart + WorkItem->Length;
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chptr += PAGE_SIZE, Offset.QuadPart += PAGE_SIZE)
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{
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*chptr ^= 0;
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}
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}
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}
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ObDereferenceObject(WorkItem->FileObject);
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ExFreePool(WorkItem);
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DPRINT("Done\n");
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}
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VOID
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NTAPI
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CcScheduleReadAhead(IN PFILE_OBJECT FileObject,
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IN PLARGE_INTEGER FileOffset,
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IN ULONG Length)
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{
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PWORK_QUEUE_WITH_READ_AHEAD WorkItem;
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DPRINT("Schedule read ahead %08x%08x:%x %wZ\n",
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FileOffset->HighPart,
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FileOffset->LowPart,
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Length,
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&FileObject->FileName);
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WorkItem = ExAllocatePool(NonPagedPool, sizeof(*WorkItem));
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if (!WorkItem) KeBugCheck(0);
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ObReferenceObject(FileObject);
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WorkItem->FileObject = FileObject;
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WorkItem->FileOffset = *FileOffset;
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WorkItem->Length = Length;
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ExInitializeWorkItem(&WorkItem->WorkItem,
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(PWORKER_THREAD_ROUTINE)CcpReadAhead,
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WorkItem);
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ExQueueWorkItem(&WorkItem->WorkItem, DelayedWorkQueue);
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DPRINT("Done\n");
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}
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VOID
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NTAPI
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CcSetDirtyPinnedData(IN PVOID BcbVoid,
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IN OPTIONAL PLARGE_INTEGER Lsn)
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{
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PNOCC_BCB Bcb = (PNOCC_BCB)BcbVoid;
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Bcb->Dirty = TRUE;
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}
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LARGE_INTEGER
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NTAPI
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CcGetFlushedValidData(IN PSECTION_OBJECT_POINTERS SectionObjectPointer,
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IN BOOLEAN CcInternalCaller)
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{
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LARGE_INTEGER Result = {{0}};
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UNIMPLEMENTED_DBGBREAK();
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return Result;
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}
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VOID
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NTAPI
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_CcpFlushCache(IN PNOCC_CACHE_MAP Map,
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IN OPTIONAL PLARGE_INTEGER FileOffset,
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IN ULONG Length,
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OUT OPTIONAL PIO_STATUS_BLOCK IoStatus,
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BOOLEAN Delete,
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const char *File,
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int Line)
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{
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PNOCC_BCB Bcb = NULL;
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LARGE_INTEGER LowerBound, UpperBound;
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PLIST_ENTRY ListEntry;
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IO_STATUS_BLOCK IOSB;
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RtlZeroMemory(&IOSB, sizeof(IO_STATUS_BLOCK));
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DPRINT("CcFlushCache (while file) (%s:%d)\n", File, Line);
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if (FileOffset && Length)
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{
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LowerBound.QuadPart = FileOffset->QuadPart;
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UpperBound.QuadPart = LowerBound.QuadPart + Length;
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}
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else
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{
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LowerBound.QuadPart = 0;
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UpperBound.QuadPart = 0x7fffffffffffffffull;
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}
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CcpLock();
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ListEntry = Map->AssociatedBcb.Flink;
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while (ListEntry != &Map->AssociatedBcb)
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{
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Bcb = CONTAINING_RECORD(ListEntry, NOCC_BCB, ThisFileList);
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CcpReferenceCache((ULONG)(Bcb - CcCacheSections));
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if (Bcb->FileOffset.QuadPart + Bcb->Length >= LowerBound.QuadPart &&
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Bcb->FileOffset.QuadPart < UpperBound.QuadPart)
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{
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DPRINT("Bcb #%x (@%08x%08x)\n",
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Bcb - CcCacheSections,
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Bcb->FileOffset.u.HighPart, Bcb->FileOffset.u.LowPart);
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Bcb->RefCount++;
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CcpUnlock();
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MiFlushMappedSection(Bcb->BaseAddress,
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&Bcb->FileOffset,
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&Map->FileSizes.FileSize,
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Bcb->Dirty);
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CcpLock();
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Bcb->RefCount--;
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Bcb->Dirty = FALSE;
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ListEntry = ListEntry->Flink;
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if (Delete && Bcb->RefCount < 2)
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{
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Bcb->RefCount = 1;
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CcpDereferenceCache((ULONG)(Bcb - CcCacheSections), FALSE);
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}
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else
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{
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CcpUnpinData(Bcb, TRUE);
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}
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}
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else
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{
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ListEntry = ListEntry->Flink;
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CcpUnpinData(Bcb, TRUE);
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}
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DPRINT("End loop\n");
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}
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CcpUnlock();
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if (IoStatus) *IoStatus = IOSB;
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}
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VOID
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NTAPI
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CcFlushCache(IN PSECTION_OBJECT_POINTERS SectionObjectPointer,
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IN OPTIONAL PLARGE_INTEGER FileOffset,
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IN ULONG Length,
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OUT OPTIONAL PIO_STATUS_BLOCK IoStatus)
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{
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PNOCC_CACHE_MAP Map = (PNOCC_CACHE_MAP)SectionObjectPointer->SharedCacheMap;
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/* Not cached */
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if (!Map)
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{
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if (IoStatus)
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{
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IoStatus->Status = STATUS_SUCCESS;
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IoStatus->Information = 0;
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}
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return;
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}
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CcpFlushCache(Map, FileOffset, Length, IoStatus, TRUE);
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}
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BOOLEAN
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NTAPI
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CcFlushImageSection(PSECTION_OBJECT_POINTERS SectionObjectPointer,
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MMFLUSH_TYPE FlushType)
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{
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PNOCC_CACHE_MAP Map = (PNOCC_CACHE_MAP)SectionObjectPointer->SharedCacheMap;
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PNOCC_BCB Bcb;
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PLIST_ENTRY Entry;
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IO_STATUS_BLOCK IOSB;
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BOOLEAN Result = TRUE;
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if (!Map) return TRUE;
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for (Entry = Map->AssociatedBcb.Flink;
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Entry != &Map->AssociatedBcb;
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Entry = Entry->Flink)
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{
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Bcb = CONTAINING_RECORD(Entry, NOCC_BCB, ThisFileList);
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if (!Bcb->Dirty) continue;
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switch (FlushType)
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{
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case MmFlushForDelete:
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CcPurgeCacheSection(SectionObjectPointer,
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&Bcb->FileOffset,
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Bcb->Length,
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FALSE);
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break;
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case MmFlushForWrite:
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CcFlushCache(SectionObjectPointer,
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&Bcb->FileOffset,
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Bcb->Length,
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&IOSB);
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break;
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}
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}
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return Result;
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}
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/* Always succeeds for us */
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PVOID
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NTAPI
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CcRemapBcb(IN PVOID Bcb)
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{
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ULONG Number = (ULONG)(((PNOCC_BCB)Bcb) - CcCacheSections);
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CcpLock();
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ASSERT(RtlTestBit(CcCacheBitmap, Number));
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CcpReferenceCache(Number);
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CcpUnlock();
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return Bcb;
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}
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VOID
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NTAPI
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CcShutdownSystem(VOID)
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{
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ULONG i, Result;
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NTSTATUS Status;
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DPRINT1("CC: Shutdown\n");
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for (i = 0; i < CACHE_NUM_SECTIONS; i++)
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{
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PNOCC_BCB Bcb = &CcCacheSections[i];
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if (Bcb->SectionObject)
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{
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DPRINT1("Evicting #%02x %08x%08x %wZ\n",
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i,
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Bcb->FileOffset.u.HighPart,
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Bcb->FileOffset.u.LowPart,
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&MmGetFileObjectForSection((PROS_SECTION_OBJECT)Bcb->SectionObject)->FileName);
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CcpFlushCache(Bcb->Map, NULL, 0, NULL, TRUE);
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Bcb->Dirty = FALSE;
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}
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}
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/* Evict all section pages */
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Status = MiRosTrimCache(~0, 0, &Result);
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DPRINT1("Done (Evicted %d, Status %x)\n", Result, Status);
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}
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VOID
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NTAPI
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CcRepinBcb(IN PVOID Bcb)
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{
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ULONG Number = (ULONG)(((PNOCC_BCB)Bcb) - CcCacheSections);
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CcpLock();
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ASSERT(RtlTestBit(CcCacheBitmap, Number));
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DPRINT("CcRepinBcb(#%x)\n", Number);
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CcpReferenceCache(Number);
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CcpUnlock();
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}
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VOID
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NTAPI
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CcUnpinRepinnedBcb(IN PVOID Bcb,
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IN BOOLEAN WriteThrough,
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OUT PIO_STATUS_BLOCK IoStatus)
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{
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PNOCC_BCB RealBcb = (PNOCC_BCB)Bcb;
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if (WriteThrough)
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{
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DPRINT("BCB #%x\n", RealBcb - CcCacheSections);
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CcpFlushCache(RealBcb->Map,
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&RealBcb->FileOffset,
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RealBcb->Length,
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IoStatus,
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RealBcb->Dirty);
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}
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CcUnpinData(Bcb);
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}
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/* EOF */
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