ntoskrnl/cc/cacheman.c

   1 /*
   2  * COPYRIGHT:       See COPYING in the top level directory
   3  * PROJECT:         ReactOS kernel
   4  * FILE:            ntoskrnl/cc/cacheman.c
   5  * PURPOSE:         Cache manager
   6  *
   7  * PROGRAMMERS:     David Welch (welch@cwcom.net)
   8  */
   9
  10 /* INCLUDES *****************************************************************/
  11
  12 #include <ntoskrnl.h>
  13 #define NDEBUG
  14 #include <debug.h>
  15
  16 BOOLEAN CcPfEnablePrefetcher;
  17 PFSN_PREFETCHER_GLOBALS CcPfGlobals;
  18
  19 /* FUNCTIONS *****************************************************************/
  20
  21 VOID
  22 NTAPI
  23 INIT_FUNCTION
  24 CcPfInitializePrefetcher(VOID)
  25 {
  26     /* Notify debugger */
  27     DbgPrintEx(DPFLTR_PREFETCHER_ID,
  28                DPFLTR_TRACE_LEVEL,
  29                "CCPF: InitializePrefetecher()\n");
  30
  31     /* Setup the Prefetcher Data */
  32     InitializeListHead(&CcPfGlobals.ActiveTraces);
  33     InitializeListHead(&CcPfGlobals.CompletedTraces);
  34     ExInitializeFastMutex(&CcPfGlobals.CompletedTracesLock);
  35
  36     /* FIXME: Setup the rest of the prefetecher */
  37 }
  38
  39 BOOLEAN
  40 NTAPI
  41 INIT_FUNCTION
  42 CcInitializeCacheManager(VOID)
  43 {
  44     CcInitView();
  45     return TRUE;
  46 }
  47
  48 /*
  49  * @unimplemented
  50  */
  51 LARGE_INTEGER
  52 NTAPI
  53 CcGetFlushedValidData (
  54     IN PSECTION_OBJECT_POINTERS SectionObjectPointer,
  55     IN BOOLEAN BcbListHeld
  56     )
  57 {
  58         LARGE_INTEGER i;
  59
  60         UNIMPLEMENTED;
  61
  62         i.QuadPart = 0;
  63         return i;
  64 }
  65
  66 /*
  67  * @unimplemented
  68  */
  69 PVOID
  70 NTAPI
  71 CcRemapBcb (
  72     IN PVOID Bcb
  73     )
  74 {
  75         UNIMPLEMENTED;
  76
  77     return 0;
  78 }
  79
  80 /*
  81  * @unimplemented
  82  */
  83 VOID
  84 NTAPI
  85 CcScheduleReadAhead (
  86         IN      PFILE_OBJECT            FileObject,
  87         IN      PLARGE_INTEGER          FileOffset,
  88         IN      ULONG                   Length
  89         )
  90 {
  91         UNIMPLEMENTED;
  92 }
  93
  94 /*
  95  * @unimplemented
  96  */
  97 VOID
  98 NTAPI
  99 CcSetAdditionalCacheAttributes (
 100         IN      PFILE_OBJECT    FileObject,
 101         IN      BOOLEAN         DisableReadAhead,
 102         IN      BOOLEAN         DisableWriteBehind
 103         )
 104 {
 105     CCTRACE(CC_API_DEBUG, "FileObject=%p DisableReadAhead=%d DisableWriteBehind=%d\n",
 106         FileObject, DisableReadAhead, DisableWriteBehind);
 107
 108         UNIMPLEMENTED;
 109 }
 110
 111 /*
 112  * @unimplemented
 113  */
 114 VOID
 115 NTAPI
 116 CcSetBcbOwnerPointer (
 117         IN      PVOID   Bcb,
 118         IN      PVOID   Owner
 119         )
 120 {
 121     PINTERNAL_BCB iBcb = Bcb;
 122
 123     CCTRACE(CC_API_DEBUG, "Bcb=%p Owner=%p\n",
 124         Bcb, Owner);
 125
 126     if (!ExIsResourceAcquiredExclusiveLite(&iBcb->Lock) && !ExIsResourceAcquiredSharedLite(&iBcb->Lock))
 127     {
 128         DPRINT1("Current thread doesn't own resource!\n");
 129         return;
 130     }
 131
 132     ExSetResourceOwnerPointer(&iBcb->Lock, Owner);
 133 }
 134
 135 /*
 136  * @unimplemented
 137  */
 138 VOID
 139 NTAPI
 140 CcSetDirtyPageThreshold (
 141         IN      PFILE_OBJECT    FileObject,
 142         IN      ULONG           DirtyPageThreshold
 143         )
 144 {
 145     CCTRACE(CC_API_DEBUG, "FileObject=%p DirtyPageThreshold=%lu\n",
 146         FileObject, DirtyPageThreshold);
 147
 148         UNIMPLEMENTED;
 149 }
 150
 151 /*
 152  * @unimplemented
 153  */
 154 VOID
 155 NTAPI
 156 CcSetReadAheadGranularity (
 157         IN      PFILE_OBJECT    FileObject,
 158         IN      ULONG           Granularity
 159         )
 160 {
 161     CCTRACE(CC_API_DEBUG, "FileObject=%p Granularity=%lu\n",
 162         FileObject, Granularity);
 163
 164         UNIMPLEMENTED;
 165 }