sdk/include/ddk/prefix.h

   1 #ifndef _RXPREFIX_
   2 #define _RXPREFIX_
   3
   4 typedef struct _RX_CONNECTION_ID
   5 {
   6     union
   7     {
   8         ULONG SessionID;
   9         LUID Luid;
  10     };
  11 } RX_CONNECTION_ID, *PRX_CONNECTION_ID;
  12
  13 ULONG
  14 RxTableComputeHashValue(
  15     _In_ PUNICODE_STRING Name);
  16
  17 PVOID
  18 RxPrefixTableLookupName(
  19     _In_ PRX_PREFIX_TABLE ThisTable,
  20     _In_ PUNICODE_STRING CanonicalName,
  21     _Out_ PUNICODE_STRING RemainingName,
  22     _In_ PRX_CONNECTION_ID ConnectionId);
  23
  24 PRX_PREFIX_ENTRY
  25 RxPrefixTableInsertName(
  26     _Inout_ PRX_PREFIX_TABLE ThisTable,
  27     _Inout_ PRX_PREFIX_ENTRY ThisEntry,
  28     _In_ PVOID Container,
  29     _In_ PULONG ContainerRefCount,
  30     _In_ USHORT CaseInsensitiveLength,
  31     _In_ PRX_CONNECTION_ID ConnectionId);
  32
  33 VOID
  34 RxRemovePrefixTableEntry(
  35     _Inout_ PRX_PREFIX_TABLE ThisTable,
  36     _Inout_ PRX_PREFIX_ENTRY Entry);
  37
  38 VOID
  39 RxInitializePrefixTable(
  40     _Inout_ PRX_PREFIX_TABLE ThisTable,
  41     _In_opt_ ULONG TableSize,
  42     _In_ BOOLEAN CaseInsensitiveMatch);
  43
  44 typedef struct _RX_PREFIX_ENTRY
  45 {
  46     NODE_TYPE_CODE NodeTypeCode;
  47     NODE_BYTE_SIZE NodeByteSize;
  48     USHORT CaseInsensitiveLength;
  49     USHORT Spare1;
  50     ULONG SavedHashValue;
  51     LIST_ENTRY HashLinks;
  52     LIST_ENTRY MemberQLinks;
  53     UNICODE_STRING Prefix;
  54     PULONG ContainerRefCount;
  55     PVOID ContainingRecord;
  56     PVOID Context;
  57     RX_CONNECTION_ID ConnectionId;
  58 } RX_PREFIX_ENTRY, *PRX_PREFIX_ENTRY;
  59
  60 #define RX_PREFIX_TABLE_DEFAULT_LENGTH 32
  61
  62 typedef struct _RX_PREFIX_TABLE {
  63     NODE_TYPE_CODE NodeTypeCode;
  64     NODE_BYTE_SIZE NodeByteSize;
  65     ULONG Version;
  66     LIST_ENTRY MemberQueue;
  67     ERESOURCE TableLock;
  68     PRX_PREFIX_ENTRY TableEntryForNull;
  69     BOOLEAN CaseInsensitiveMatch;
  70     BOOLEAN IsNetNameTable;
  71     ULONG TableSize;
  72 #if DBG
  73     ULONG Lookups;
  74     ULONG FailedLookups;
  75     ULONG Considers;
  76     ULONG Compares;
  77 #endif
  78     LIST_ENTRY HashBuckets[RX_PREFIX_TABLE_DEFAULT_LENGTH];
  79 } RX_PREFIX_TABLE, *PRX_PREFIX_TABLE;
  80
  81 #if (_WIN32_WINNT < 0x0600)
  82 #define RxAcquirePrefixTableLockShared(T, W) RxpAcquirePrefixTableLockShared((T),(W),TRUE)
  83 #define RxAcquirePrefixTableLockExclusive(T, W) RxpAcquirePrefixTableLockExclusive((T), (W), TRUE)
  84 #define RxReleasePrefixTableLock(T) RxpReleasePrefixTableLock((T), TRUE)
  85
  86 BOOLEAN
  87 RxpAcquirePrefixTableLockShared(
  88    _In_ PRX_PREFIX_TABLE pTable,
  89    _In_ BOOLEAN Wait,
  90    _In_ BOOLEAN ProcessBufferingStateChangeRequests);
  91
  92 BOOLEAN
  93 RxpAcquirePrefixTableLockExclusive(
  94    _In_ PRX_PREFIX_TABLE pTable,
  95    _In_ BOOLEAN Wait,
  96    _In_ BOOLEAN ProcessBufferingStateChangeRequests);
  97
  98 VOID
  99 RxpReleasePrefixTableLock(
 100    _In_ PRX_PREFIX_TABLE pTable,
 101    _In_ BOOLEAN ProcessBufferingStateChangeRequests);
 102 #else
 103 #define RxAcquirePrefixTableLockShared(T, W) ExAcquireResourceSharedLite(&(T)->TableLock, (W))
 104 #define RxAcquirePrefixTableLockExclusive(T, W) ExAcquireResourceExclusiveLite(&(T)->TableLock, (W))
 105 #define RxReleasePrefixTableLock(T) ExReleaseResourceLite(&(T)->TableLock)
 106 #endif
 107
 108 VOID
 109 RxExclusivePrefixTableLockToShared(
 110     _In_ PRX_PREFIX_TABLE Table);
 111
 112 #define RxIsPrefixTableLockExclusive(T) ExIsResourceAcquiredExclusiveLite(&(T)->TableLock)
 113 #define RxIsPrefixTableLockAcquired(T) (ExIsResourceAcquiredSharedLite(&(T)->TableLock) || \
 114                                         ExIsResourceAcquiredExclusiveLite(&(T)->TableLock))
 115
 116 #ifdef __REACTOS__
 117 #define HASH_BUCKET(T, H) &(T)->HashBuckets[H % (T)->TableSize]
 118 #endif
 119
 120 #endif