mirror of
https://github.com/reactos/reactos.git
synced 2025-02-25 01:39:30 +00:00
6c0c23cb53
- Sync with trunk head (r50270) - This also reverts r49298. svn path=/branches/cmake-bringup/; revision=50271
515 lines
15 KiB
C
515 lines
15 KiB
C
/*
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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/fssup.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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/* GLOBALS ********************************************************************/
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PFSN_PREFETCHER_GLOBALS CcPfGlobals;
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extern LONG CcOutstandingDeletes;
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extern KEVENT CcpLazyWriteEvent;
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extern KEVENT CcFinalizeEvent;
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extern VOID NTAPI CcpUnmapThread(PVOID Unused);
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extern VOID NTAPI CcpLazyWriteThread(PVOID Unused);
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HANDLE CcUnmapThreadHandle, CcLazyWriteThreadHandle;
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CLIENT_ID CcUnmapThreadId, CcLazyWriteThreadId;
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FAST_MUTEX GlobalPageOperation;
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typedef struct _NOCC_PRIVATE_CACHE_MAP
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{
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LIST_ENTRY ListEntry;
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PFILE_OBJECT FileObject;
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PNOCC_CACHE_MAP Map;
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} NOCC_PRIVATE_CACHE_MAP, *PNOCC_PRIVATE_CACHE_MAP;
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LIST_ENTRY CcpAllSharedCacheMaps;
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/* FUNCTIONS ******************************************************************/
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// Interact with legacy balance manager for now
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// This can fall away when our section implementation supports
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// demand paging properly
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NTSTATUS
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CcRosTrimCache(ULONG Target, ULONG Priority, PULONG NrFreed)
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{
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ULONG i, Freed, BcbHead;
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*NrFreed = 0;
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for (i = 0; i < CACHE_NUM_SECTIONS; i++) {
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BcbHead = (i+CcCacheClockHand) % CACHE_NUM_SECTIONS;
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// Reference a cache stripe so it won't go away
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CcpLock();
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if (CcCacheSections[BcbHead].BaseAddress) {
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CcpReferenceCache(BcbHead);
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CcpUnlock();
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} else {
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CcpUnlock();
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continue;
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}
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// Defer to MM to try recovering pages from it
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Freed = MiCacheEvictPages
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(CcCacheSections[BcbHead].BaseAddress, Target);
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Target -= Freed;
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*NrFreed += Freed;
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CcpLock();
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CcpUnpinData(&CcCacheSections[BcbHead], TRUE);
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CcpUnlock();
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}
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return STATUS_SUCCESS;
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}
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BOOLEAN
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NTAPI
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CcInitializeCacheManager(VOID)
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{
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int i;
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DPRINT("Initialize\n");
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for (i = 0; i < CACHE_NUM_SECTIONS; i++)
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{
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KeInitializeEvent(&CcCacheSections[i].ExclusiveWait, SynchronizationEvent, FALSE);
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InitializeListHead(&CcCacheSections[i].ThisFileList);
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}
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InitializeListHead(&CcpAllSharedCacheMaps);
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KeInitializeEvent(&CcDeleteEvent, SynchronizationEvent, FALSE);
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KeInitializeEvent(&CcFinalizeEvent, SynchronizationEvent, FALSE);
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KeInitializeEvent(&CcpLazyWriteEvent, SynchronizationEvent, FALSE);
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CcCacheBitmap->Buffer = ((PULONG)&CcCacheBitmap[1]);
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CcCacheBitmap->SizeOfBitMap = ROUND_UP(CACHE_NUM_SECTIONS, 32);
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DPRINT("Cache has %d entries\n", CcCacheBitmap->SizeOfBitMap);
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ExInitializeFastMutex(&CcMutex);
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ExInitializeFastMutex(&GlobalPageOperation);
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// MM stub
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KeInitializeEvent(&MmWaitPageEvent, SynchronizationEvent, FALSE);
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// Until we're fully demand paged, we can do things the old way through
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// the balance manager
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MmInitializeMemoryConsumer(MC_CACHE, CcRosTrimCache);
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return TRUE;
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}
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VOID
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NTAPI
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CcPfInitializePrefetcher(VOID)
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{
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/* Notify debugger */
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DbgPrintEx(DPFLTR_PREFETCHER_ID,
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DPFLTR_TRACE_LEVEL,
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"CCPF: InitializePrefetecher()\n");
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/* Setup the Prefetcher Data */
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InitializeListHead(&CcPfGlobals.ActiveTraces);
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InitializeListHead(&CcPfGlobals.CompletedTraces);
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ExInitializeFastMutex(&CcPfGlobals.CompletedTracesLock);
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/* FIXME: Setup the rest of the prefetecher */
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}
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BOOLEAN
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NTAPI
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CcpAcquireFileLock(PNOCC_CACHE_MAP Map)
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{
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DPRINT("Calling AcquireForLazyWrite: %x\n", Map->LazyContext);
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return Map->Callbacks.AcquireForLazyWrite(Map->LazyContext, TRUE);
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}
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VOID
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NTAPI
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CcpReleaseFileLock(PNOCC_CACHE_MAP Map)
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{
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DPRINT("Releasing Lazy Write %x\n", Map->LazyContext);
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Map->Callbacks.ReleaseFromLazyWrite(Map->LazyContext);
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}
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// Must have CcpLock()
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PFILE_OBJECT CcpFindOtherStreamFileObject(PFILE_OBJECT FileObject)
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{
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PLIST_ENTRY Entry, Private;
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for (Entry = CcpAllSharedCacheMaps.Flink;
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Entry != &CcpAllSharedCacheMaps;
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Entry = Entry->Flink)
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{
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// 'Identical' test for other stream file object
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PNOCC_CACHE_MAP Map = CONTAINING_RECORD(Entry, NOCC_CACHE_MAP, Entry);
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for (Private = Map->PrivateCacheMaps.Flink;
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Private != &Map->PrivateCacheMaps;
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Private = Private->Flink)
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{
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PNOCC_PRIVATE_CACHE_MAP PrivateMap = CONTAINING_RECORD(Private, NOCC_PRIVATE_CACHE_MAP, ListEntry);
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if (PrivateMap->FileObject->Flags & FO_STREAM_FILE &&
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PrivateMap->FileObject->DeviceObject == FileObject->DeviceObject &&
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PrivateMap->FileObject->Vpb == FileObject->Vpb &&
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PrivateMap->FileObject->FsContext == FileObject->FsContext &&
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PrivateMap->FileObject->FsContext2 == FileObject->FsContext2 &&
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1)
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{
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return PrivateMap->FileObject;
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}
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}
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}
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return 0;
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}
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// Thanks: http://windowsitpro.com/Windows/Articles/ArticleID/3864/pg/2/2.html
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VOID
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NTAPI
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CcInitializeCacheMap(IN PFILE_OBJECT FileObject,
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IN PCC_FILE_SIZES FileSizes,
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IN BOOLEAN PinAccess,
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IN PCACHE_MANAGER_CALLBACKS Callbacks,
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IN PVOID LazyWriteContext)
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{
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PNOCC_CACHE_MAP Map = FileObject->SectionObjectPointer->SharedCacheMap;
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PNOCC_PRIVATE_CACHE_MAP PrivateCacheMap = FileObject->PrivateCacheMap;
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CcpLock();
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if (!Map && FileObject->Flags & FO_STREAM_FILE)
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{
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PFILE_OBJECT IdenticalStreamFileObject =
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CcpFindOtherStreamFileObject(FileObject);
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if (IdenticalStreamFileObject)
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Map = IdenticalStreamFileObject->SectionObjectPointer->SharedCacheMap;
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if (Map)
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{
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DPRINT1
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("Linking SFO %x to previous SFO %x through cache map %x #\n",
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FileObject, IdenticalStreamFileObject, Map);
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}
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}
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if (!Map)
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{
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DPRINT("Initializing file object for (%p) %wZ\n", FileObject, &FileObject->FileName);
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Map = ExAllocatePool(NonPagedPool, sizeof(NOCC_CACHE_MAP));
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FileObject->SectionObjectPointer->SharedCacheMap = Map;
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Map->FileSizes = *FileSizes;
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Map->LazyContext = LazyWriteContext;
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Map->ReadAheadGranularity = PAGE_SIZE;
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RtlCopyMemory(&Map->Callbacks, Callbacks, sizeof(*Callbacks));
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// For now ...
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DPRINT("FileSizes->ValidDataLength %08x%08x\n", FileSizes->ValidDataLength.HighPart, FileSizes->ValidDataLength.LowPart);
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InitializeListHead(&Map->AssociatedBcb);
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InitializeListHead(&Map->PrivateCacheMaps);
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InsertTailList(&CcpAllSharedCacheMaps, &Map->Entry);
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DPRINT("New Map %x\n", Map);
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}
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if (!PrivateCacheMap)
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{
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PrivateCacheMap = ExAllocatePool(NonPagedPool, sizeof(*PrivateCacheMap));
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FileObject->PrivateCacheMap = PrivateCacheMap;
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PrivateCacheMap->FileObject = FileObject;
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ObReferenceObject(PrivateCacheMap->FileObject);
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}
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PrivateCacheMap->Map = Map;
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InsertTailList(&Map->PrivateCacheMaps, &PrivateCacheMap->ListEntry);
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CcpUnlock();
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}
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ULONG
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NTAPI
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CcpCountCacheSections(IN PNOCC_CACHE_MAP Map)
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{
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PLIST_ENTRY Entry;
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ULONG Count;
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for (Count = 0, Entry = Map->AssociatedBcb.Flink; Entry != &Map->AssociatedBcb; Entry = Entry->Flink, Count++);
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return Count;
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}
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BOOLEAN
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NTAPI
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CcUninitializeCacheMap(IN PFILE_OBJECT FileObject,
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IN OPTIONAL PLARGE_INTEGER TruncateSize,
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IN OPTIONAL PCACHE_UNINITIALIZE_EVENT UninitializeEvent)
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{
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BOOLEAN LastMap = FALSE;
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PNOCC_CACHE_MAP Map = (PNOCC_CACHE_MAP)FileObject->SectionObjectPointer->SharedCacheMap;
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PNOCC_PRIVATE_CACHE_MAP PrivateCacheMap = FileObject->PrivateCacheMap;
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DPRINT("Uninitializing file object for %wZ SectionObjectPointer %x\n", &FileObject->FileName, FileObject->SectionObjectPointer);
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ASSERT(UninitializeEvent == NULL);
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if (Map)
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CcpFlushCache(Map, NULL, 0, NULL, FALSE);
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CcpLock();
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if (PrivateCacheMap)
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{
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ASSERT(!Map || Map == PrivateCacheMap->Map);
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ASSERT(PrivateCacheMap->FileObject == FileObject);
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RemoveEntryList(&PrivateCacheMap->ListEntry);
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if (IsListEmpty(&PrivateCacheMap->Map->PrivateCacheMaps))
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{
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while (!IsListEmpty(&Map->AssociatedBcb))
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{
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PNOCC_BCB Bcb = CONTAINING_RECORD(Map->AssociatedBcb.Flink, NOCC_BCB, ThisFileList);
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DPRINT("Evicting cache stripe #%x\n", Bcb - CcCacheSections);
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Bcb->RefCount = 1;
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CcpDereferenceCache(Bcb - CcCacheSections, TRUE);
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}
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RemoveEntryList(&PrivateCacheMap->Map->Entry);
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ExFreePool(PrivateCacheMap->Map);
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FileObject->SectionObjectPointer->SharedCacheMap = NULL;
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LastMap = TRUE;
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}
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ObDereferenceObject(PrivateCacheMap->FileObject);
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FileObject->PrivateCacheMap = NULL;
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ExFreePool(PrivateCacheMap);
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}
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CcpUnlock();
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DPRINT("Uninit complete\n");
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return LastMap;
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}
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VOID
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NTAPI
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CcSetFileSizes(IN PFILE_OBJECT FileObject,
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IN PCC_FILE_SIZES FileSizes)
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{
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PNOCC_CACHE_MAP Map = (PNOCC_CACHE_MAP)FileObject->SectionObjectPointer->SharedCacheMap;
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if (!Map) return;
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Map->FileSizes = *FileSizes;
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PNOCC_BCB Bcb = Map->AssociatedBcb.Flink == &Map->AssociatedBcb ?
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NULL : CONTAINING_RECORD(Map->AssociatedBcb.Flink, NOCC_BCB, ThisFileList);
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if (!Bcb) return;
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MmExtendCacheSection(Bcb->SectionObject, &FileSizes->FileSize, FALSE);
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DPRINT("FileSizes->FileSize %x\n", FileSizes->FileSize.LowPart);
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DPRINT("FileSizes->AllocationSize %x\n", FileSizes->AllocationSize.LowPart);
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DPRINT("FileSizes->ValidDataLength %x\n", FileSizes->ValidDataLength.LowPart);
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}
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BOOLEAN
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NTAPI
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CcGetFileSizes
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(IN PFILE_OBJECT FileObject,
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IN PCC_FILE_SIZES FileSizes)
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{
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PNOCC_CACHE_MAP Map = (PNOCC_CACHE_MAP)FileObject->SectionObjectPointer->SharedCacheMap;
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if (!Map) return FALSE;
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*FileSizes = Map->FileSizes;
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return TRUE;
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}
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BOOLEAN
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NTAPI
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CcPurgeCacheSection(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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IN BOOLEAN UninitializeCacheMaps)
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{
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PNOCC_CACHE_MAP Map = (PNOCC_CACHE_MAP)SectionObjectPointer->SharedCacheMap;
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if (!Map) return TRUE;
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CcpFlushCache(Map, NULL, 0, NULL, TRUE);
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return TRUE;
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}
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VOID
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NTAPI
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CcSetDirtyPageThreshold(IN PFILE_OBJECT FileObject,
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IN ULONG DirtyPageThreshold)
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{
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UNIMPLEMENTED;
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while (TRUE);
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}
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BOOLEAN
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NTAPI
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CcZeroData(IN PFILE_OBJECT FileObject,
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IN PLARGE_INTEGER StartOffset,
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IN PLARGE_INTEGER EndOffset,
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IN BOOLEAN Wait)
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{
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PNOCC_BCB Bcb = NULL;
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PLIST_ENTRY ListEntry = NULL;
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LARGE_INTEGER LowerBound = *StartOffset;
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LARGE_INTEGER UpperBound = *EndOffset;
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LARGE_INTEGER Target, End;
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PVOID PinnedBcb, PinnedBuffer;
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PNOCC_CACHE_MAP Map = FileObject->SectionObjectPointer->SharedCacheMap;
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DPRINT
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("S %08x%08x E %08x%08x\n",
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StartOffset->u.HighPart, StartOffset->u.LowPart,
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EndOffset->u.HighPart, EndOffset->u.LowPart);
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if (!Map)
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{
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NTSTATUS Status;
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IO_STATUS_BLOCK IOSB;
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PCHAR ZeroBuf = ExAllocatePool(PagedPool, PAGE_SIZE);
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ULONG ToWrite;
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if (!ZeroBuf) RtlRaiseStatus(STATUS_INSUFFICIENT_RESOURCES);
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DPRINT1("RtlZeroMemory(%x,%x)\n", ZeroBuf, PAGE_SIZE);
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RtlZeroMemory(ZeroBuf, PAGE_SIZE);
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Target.QuadPart = PAGE_ROUND_DOWN(LowerBound.QuadPart);
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End.QuadPart = PAGE_ROUND_UP(UpperBound.QuadPart);
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// Handle leading page
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if (LowerBound.QuadPart != Target.QuadPart)
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{
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ToWrite = MIN(UpperBound.QuadPart - LowerBound.QuadPart, (PAGE_SIZE - LowerBound.QuadPart) & (PAGE_SIZE - 1));
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DPRINT("Zero last half %08x%08x %x\n", Target.u.HighPart, Target.u.LowPart, ToWrite);
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Status = MiSimpleRead(FileObject, &Target, ZeroBuf, PAGE_SIZE, &IOSB);
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if (!NT_SUCCESS(Status))
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{
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ExFreePool(ZeroBuf);
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RtlRaiseStatus(Status);
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}
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DPRINT1("RtlZeroMemory(%x,%x)\n", ZeroBuf + LowerBound.QuadPart - Target.QuadPart, ToWrite);
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RtlZeroMemory(ZeroBuf + LowerBound.QuadPart - Target.QuadPart, ToWrite);
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Status = MiSimpleWrite(FileObject, &Target, ZeroBuf, MIN(PAGE_SIZE,UpperBound.QuadPart-Target.QuadPart), &IOSB);
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if (!NT_SUCCESS(Status))
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{
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ExFreePool(ZeroBuf);
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RtlRaiseStatus(Status);
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}
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Target.QuadPart += PAGE_SIZE;
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}
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DPRINT1("RtlZeroMemory(%x,%x)\n", ZeroBuf, PAGE_SIZE);
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RtlZeroMemory(ZeroBuf, PAGE_SIZE);
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while (UpperBound.QuadPart - Target.QuadPart > PAGE_SIZE)
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{
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DPRINT("Zero full page %08x%08x\n", Target.u.HighPart, Target.u.LowPart);
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Status = MiSimpleWrite(FileObject, &Target, ZeroBuf, PAGE_SIZE, &IOSB);
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if (!NT_SUCCESS(Status))
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{
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ExFreePool(ZeroBuf);
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RtlRaiseStatus(Status);
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}
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Target.QuadPart += PAGE_SIZE;
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}
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if (UpperBound.QuadPart > Target.QuadPart)
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{
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ToWrite = UpperBound.QuadPart - Target.QuadPart;
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DPRINT("Zero first half %08x%08x %x\n", Target.u.HighPart, Target.u.LowPart, ToWrite);
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Status = MiSimpleRead(FileObject, &Target, ZeroBuf, PAGE_SIZE, &IOSB);
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if (!NT_SUCCESS(Status))
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{
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ExFreePool(ZeroBuf);
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RtlRaiseStatus(Status);
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}
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DPRINT1("RtlZeroMemory(%x,%x)\n", ZeroBuf, ToWrite);
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RtlZeroMemory(ZeroBuf, ToWrite);
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Status = MiSimpleWrite(FileObject, &Target, ZeroBuf, MIN(PAGE_SIZE, UpperBound.QuadPart-Target.QuadPart), &IOSB);
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if (!NT_SUCCESS(Status))
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{
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ExFreePool(ZeroBuf);
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RtlRaiseStatus(Status);
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}
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Target.QuadPart += PAGE_SIZE;
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}
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ExFreePool(ZeroBuf);
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return TRUE;
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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(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
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("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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Target.QuadPart = MAX(Bcb->FileOffset.QuadPart, LowerBound.QuadPart);
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End.QuadPart = MIN(Map->FileSizes.ValidDataLength.QuadPart, UpperBound.QuadPart);
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End.QuadPart = MIN(End.QuadPart, Bcb->FileOffset.QuadPart + Bcb->Length);
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CcpUnlock();
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if (!CcPreparePinWrite
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(FileObject,
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&Target,
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End.QuadPart - Target.QuadPart,
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TRUE,
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Wait,
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&PinnedBcb,
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&PinnedBuffer))
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{
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return FALSE;
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}
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ASSERT(PinnedBcb == Bcb);
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CcpLock();
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ListEntry = ListEntry->Flink;
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// Return from pin state
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CcpUnpinData(PinnedBcb, TRUE);
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}
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CcpUnpinData(Bcb, TRUE);
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}
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CcpUnlock();
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return TRUE;
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}
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PFILE_OBJECT
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NTAPI
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||
CcGetFileObjectFromSectionPtrs(IN PSECTION_OBJECT_POINTERS SectionObjectPointer)
|
||
{
|
||
PFILE_OBJECT Result = NULL;
|
||
PNOCC_CACHE_MAP Map = SectionObjectPointer->SharedCacheMap;
|
||
CcpLock();
|
||
if (!IsListEmpty(&Map->AssociatedBcb))
|
||
{
|
||
PNOCC_BCB Bcb = CONTAINING_RECORD(Map->AssociatedBcb.Flink, NOCC_BCB, ThisFileList);
|
||
Result = MmGetFileObjectForSection((PROS_SECTION_OBJECT)Bcb->SectionObject);
|
||
}
|
||
CcpUnlock();
|
||
return Result;
|
||
}
|
||
|
||
PFILE_OBJECT
|
||
NTAPI
|
||
CcGetFileObjectFromBcb(PVOID Bcb)
|
||
{
|
||
PNOCC_BCB RealBcb = (PNOCC_BCB)Bcb;
|
||
DPRINT("BCB #%x\n", RealBcb - CcCacheSections);
|
||
return MmGetFileObjectForSection((PROS_SECTION_OBJECT)RealBcb->SectionObject);
|
||
}
|
||
|
||
/* EOF */
|