[HEADERS]
[reactos.git] / reactos / ntoskrnl / include / internal / ex.h
index b5e0934..1c73035 100644 (file)
@@ -1,5 +1,4 @@
-#ifndef __NTOSKRNL_INCLUDE_INTERNAL_EXECUTIVE_H
-#define __NTOSKRNL_INCLUDE_INTERNAL_EXECUTIVE_H
+#pragma once
 
 /* GLOBAL VARIABLES *********************************************************/
 
@@ -17,9 +16,17 @@ extern FAST_MUTEX ExpEnvironmentLock;
 extern ERESOURCE ExpFirmwareTableResource;
 extern LIST_ENTRY ExpFirmwareTableProviderListHead;
 extern BOOLEAN ExpIsWinPEMode;
-ULONG ExpAnsiCodePageDataOffset, ExpOemCodePageDataOffset;
-ULONG ExpUnicodeCaseTableDataOffset;
-PVOID ExpNlsSectionPointer;
+extern LIST_ENTRY ExpSystemResourcesList;
+extern ULONG ExpAnsiCodePageDataOffset, ExpOemCodePageDataOffset;
+extern ULONG ExpUnicodeCaseTableDataOffset;
+extern PVOID ExpNlsSectionPointer;
+extern CHAR NtBuildLab[];
+extern ULONG CmNtCSDVersion;
+extern ULONG NtGlobalFlag;
+extern ULONG ExpInitializationPhase;
+extern ULONG ExpAltTimeZoneBias;
+extern LIST_ENTRY ExSystemLookasideListHead;
+extern PCALLBACK_OBJECT PowerStateCallback;
 
 typedef struct _EXHANDLE
 {
@@ -56,18 +63,6 @@ typedef struct
 
 #define MAX_FAST_REFS           7
 
-/* Note: we only use a spinlock on SMP. On UP, we cli/sti intead */
-#ifndef CONFIG_SMP
-#define ExAcquireResourceLock(l, i) { \
-    (void)i; \
-    _disable(); \
-}
-#define ExReleaseResourceLock(l, i) _enable();
-#else
-#define ExAcquireResourceLock(l, i) KeAcquireSpinLock(l, i);
-#define ExReleaseResourceLock(l, i) KeReleaseSpinLock(l, i);
-#endif
-
 #define ExAcquireRundownProtection                      _ExAcquireRundownProtection
 #define ExReleaseRundownProtection                      _ExReleaseRundownProtection
 #define ExInitializeRundownProtection                   _ExInitializeRundownProtection
@@ -87,7 +82,7 @@ typedef struct
 //
 #define LOW_LEVEL_ENTRIES   (PAGE_SIZE / sizeof(HANDLE_TABLE_ENTRY))
 #define MID_LEVEL_ENTRIES   (PAGE_SIZE / sizeof(PHANDLE_TABLE_ENTRY))
-#define HIGH_LEVEL_ENTRIES  (65535 / (LOW_LEVEL_ENTRIES * MID_LEVEL_ENTRIES))
+#define HIGH_LEVEL_ENTRIES  (16777216 / (LOW_LEVEL_ENTRIES * MID_LEVEL_ENTRIES))
 
 //
 // Maximum index in each table level before we need another table
@@ -97,13 +92,11 @@ typedef struct
 #define MAX_HIGH_INDEX      (MID_LEVEL_ENTRIES * MID_LEVEL_ENTRIES * LOW_LEVEL_ENTRIES)
 
 //
-// Detect GCC 4.1.2+
+// Detect old GCC
 //
-#if (__GNUC__ * 10000 + __GNUC_MINOR__ * 100 + __GNUC_PATCHLEVEL__) < 40102
+#if (__GNUC__ * 10000 + __GNUC_MINOR__ * 100 + __GNUC_PATCHLEVEL__ < 40300) || \
+    (__GNUC__ * 10000 + __GNUC_MINOR__ * 100 + __GNUC_PATCHLEVEL__ == 40303) 
 
-//
-// Broken GCC with Alignment Bug. We'll do alignment ourselves at higher cost.
-//
 #define DEFINE_WAIT_BLOCK(x)                                \
     struct _AlignHack                                       \
     {                                                       \
@@ -112,7 +105,7 @@ typedef struct
     } WaitBlockBuffer;                                      \
     PEX_PUSH_LOCK_WAIT_BLOCK x = (PEX_PUSH_LOCK_WAIT_BLOCK) \
         ((ULONG_PTR)&WaitBlockBuffer.UnalignedBlock &~ 0xF);
-        
+
 #else
 
 //
@@ -123,7 +116,17 @@ typedef struct
 #define DEFINE_WAIT_BLOCK(x)                                \
     EX_PUSH_LOCK_WAIT_BLOCK WaitBlockBuffer;                \
     PEX_PUSH_LOCK_WAIT_BLOCK x = &WaitBlockBuffer;
-    
+
+#endif
+
+#ifdef _WIN64
+#define ExpChangeRundown(x, y, z) InterlockedCompareExchange64((PLONGLONG)x, y, z)
+#define ExpChangePushlock(x, y, z) InterlockedCompareExchangePointer((PVOID*)x, (PVOID)y, (PVOID)z)
+#define ExpSetRundown(x, y) InterlockedExchange64((PLONGLONG)x, y)
+#else
+#define ExpChangeRundown(x, y, z) PtrToUlong(InterlockedCompareExchange((PLONG)x, PtrToLong(y), PtrToLong(z)))
+#define ExpChangePushlock(x, y, z) LongToPtr(InterlockedCompareExchange((PLONG)x, PtrToLong(y), PtrToLong(z)))
+#define ExpSetRundown(x, y) InterlockedExchange((PLONG)x, y)
 #endif
 
 /* INITIALIZATION FUNCTIONS *************************************************/
@@ -156,6 +159,10 @@ VOID
 NTAPI
 ExpInitializeWorkerThreads(VOID);
 
+VOID
+NTAPI
+ExSwapinWorkerThreads(IN BOOLEAN AllowSwap);
+
 VOID
 NTAPI
 ExpInitLookasideLists(VOID);
@@ -336,7 +343,7 @@ ExfWaitForRundownProtectionRelease(
 
 /* HANDLE TABLE FUNCTIONS ***************************************************/
 
-typedef VOID
+typedef BOOLEAN
 (NTAPI *PEX_SWEEP_HANDLE_CALLBACK)(
     PHANDLE_TABLE_ENTRY HandleTableEntry,
     HANDLE Handle,
@@ -437,48 +444,247 @@ LONG
 NTAPI
 ExSystemExceptionFilter(VOID);
 
-static __inline _SEH_FILTER(_SEH_ExSystemExceptionFilter)
-{
-    return ExSystemExceptionFilter();
-}
-
 /* CALLBACKS *****************************************************************/
 
-VOID
 FORCEINLINE
+VOID
 ExDoCallBack(IN OUT PEX_CALLBACK Callback,
              IN PVOID Context,
              IN PVOID Argument1,
              IN PVOID Argument2)
 {
-    PEX_CALLBACK_ROUTINE_BLOCK CallbackRoutineBlock;
+    PEX_CALLBACK_ROUTINE_BLOCK CallbackBlock;
     PEX_CALLBACK_FUNCTION Function;
 
     /* Reference the block */
-    CallbackRoutineBlock = ExReferenceCallBackBlock(Callback);
-    if (CallbackRoutineBlock)
+    CallbackBlock = ExReferenceCallBackBlock(Callback);
+    if (CallbackBlock)
     {
         /* Get the function */
-        Function = ExGetCallBackBlockRoutine(CallbackRoutineBlock);
+        Function = ExGetCallBackBlockRoutine(CallbackBlock);
 
         /* Do the callback */
         Function(Context, Argument1, Argument2);
 
         /* Now dereference it */
-        ExDereferenceCallBackBlock(Callback, CallbackRoutineBlock);
+        ExDereferenceCallBackBlock(Callback, CallbackBlock);
     }
 }
 
-/* RUNDOWN *******************************************************************/
+/* FAST REFS ******************************************************************/
 
-#ifdef _WIN64
-#define ExpChangeRundown(x, y, z) InterlockedCompareExchange64((PLONGLONG)x, y, z)
-#define ExpSetRundown(x, y) InterlockedExchange64((PLONGLONG)x, y)
-#else
-#define ExpChangeRundown(x, y, z) InterlockedCompareExchange((PLONG)x, PtrToLong(y), PtrToLong(z))
-#define ExpChangePushlock(x, y, z) LongToPtr(InterlockedCompareExchange((PLONG)x, PtrToLong(y), PtrToLong(z)))
-#define ExpSetRundown(x, y) InterlockedExchange((PLONG)x, y)
-#endif
+FORCEINLINE
+PVOID
+ExGetObjectFastReference(IN EX_FAST_REF FastRef)
+{
+    /* Return the unbiased pointer */
+    return (PVOID)(FastRef.Value & ~MAX_FAST_REFS);
+}
+
+FORCEINLINE
+ULONG
+ExGetCountFastReference(IN EX_FAST_REF FastRef)
+{
+    /* Return the reference count */
+    return FastRef.RefCnt;
+}
+
+FORCEINLINE
+VOID
+ExInitializeFastReference(OUT PEX_FAST_REF FastRef,
+                          IN OPTIONAL PVOID Object)
+{
+    /* Sanity check */
+    ASSERT((((ULONG_PTR)Object) & MAX_FAST_REFS) == 0);
+    
+    /* Check if an object is being set */
+    if (!Object)
+    {
+        /* Clear the field */
+        FastRef->Object = NULL;
+    }
+    else
+    {
+        /* Otherwise, we assume the object was referenced and is ready */
+        FastRef->Value = (ULONG_PTR)Object | MAX_FAST_REFS;
+    }
+}
+
+FORCEINLINE
+EX_FAST_REF
+ExAcquireFastReference(IN OUT PEX_FAST_REF FastRef)
+{
+    EX_FAST_REF OldValue, NewValue;
+    
+    /* Start reference loop */
+    for (;;)
+    {
+        /* Get the current reference count */
+        OldValue = *FastRef;
+        if (OldValue.RefCnt)
+        {
+            /* Increase the reference count */
+            NewValue.Value = OldValue.Value - 1;
+            NewValue.Object = ExpChangePushlock(&FastRef->Object,
+                                                NewValue.Object,
+                                                OldValue.Object);
+            if (NewValue.Object != OldValue.Object) continue;
+        }
+        
+        /* We are done */
+        break;
+    }
+    
+    /* Return the old value */
+    return OldValue;
+}
+
+FORCEINLINE
+BOOLEAN
+ExInsertFastReference(IN OUT PEX_FAST_REF FastRef,
+                      IN PVOID Object)
+{
+    EX_FAST_REF OldValue, NewValue;
+    
+    /* Sanity checks */
+    ASSERT(!(((ULONG_PTR)Object) & MAX_FAST_REFS));
+    
+    /* Start update loop */
+    for (;;)
+    {
+        /* Get the current reference count */
+        OldValue = *FastRef;
+        
+        /* Check if the current count is too high or if the pointer changed */
+        if (((OldValue.RefCnt + MAX_FAST_REFS) > MAX_FAST_REFS) ||
+            ((OldValue.Value &~ MAX_FAST_REFS) != (ULONG_PTR)Object))
+        {
+            /* Fail */
+            return FALSE;
+        }
+        
+        /* Update the reference count */
+        NewValue.Value = OldValue.Value + MAX_FAST_REFS;
+        NewValue.Object = ExpChangePushlock(&FastRef->Object,
+                                            NewValue.Object,
+                                            OldValue.Object);
+        if (NewValue.Object != OldValue.Object) continue;
+        
+        /* We are done */
+        break;
+    }
+    
+    /* Return success */
+    return TRUE;   
+}
+
+FORCEINLINE
+BOOLEAN
+ExReleaseFastReference(IN PEX_FAST_REF FastRef,
+                       IN PVOID Object)
+{
+    EX_FAST_REF OldValue, NewValue;
+    
+    /* Sanity checks */
+    ASSERT(Object != NULL);
+    ASSERT(!(((ULONG_PTR)Object) & MAX_FAST_REFS));
+    
+    /* Start reference loop */
+    for (;;)
+    {
+        /* Get the current reference count */
+        OldValue = *FastRef;
+        
+        /* Check if we're full if if the pointer changed */
+        if ((OldValue.Value ^ (ULONG_PTR)Object) >= MAX_FAST_REFS) return FALSE;
+            
+        /* Decrease the reference count */
+        NewValue.Value = OldValue.Value + 1;
+        NewValue.Object = ExpChangePushlock(&FastRef->Object,
+                                            NewValue.Object,
+                                            OldValue.Object);
+        if (NewValue.Object != OldValue.Object) continue;
+        
+        /* We are done */
+        break;
+    }
+    
+    /* Return success */
+    return TRUE;
+}
+
+FORCEINLINE
+EX_FAST_REF
+ExSwapFastReference(IN PEX_FAST_REF FastRef,
+                    IN PVOID Object)
+{
+    EX_FAST_REF NewValue, OldValue;
+    
+    /* Sanity check */
+    ASSERT((((ULONG_PTR)Object) & MAX_FAST_REFS) == 0);
+    
+    /* Check if an object is being set */
+    if (!Object)
+    {
+        /* Clear the field */
+        NewValue.Object = NULL;
+    }
+    else
+    {
+        /* Otherwise, we assume the object was referenced and is ready */
+        NewValue.Value = (ULONG_PTR)Object | MAX_FAST_REFS;
+    }
+    
+    /* Update the object */
+    OldValue.Object = InterlockedExchangePointer(&FastRef->Object, NewValue.Object);
+    return OldValue;
+}
+
+FORCEINLINE
+EX_FAST_REF
+ExCompareSwapFastReference(IN PEX_FAST_REF FastRef,
+                           IN PVOID Object,
+                           IN PVOID OldObject)
+{
+    EX_FAST_REF OldValue, NewValue;
+    
+    /* Sanity check and start swap loop */
+    ASSERT(!(((ULONG_PTR)Object) & MAX_FAST_REFS));
+    for (;;)
+    {
+        /* Get the current value */
+        OldValue = *FastRef;
+        
+        /* Make sure there's enough references to swap */
+        if (!((OldValue.Value ^ (ULONG_PTR)OldObject) <= MAX_FAST_REFS)) break;
+        
+        /* Check if we have an object to swap */
+        if (Object)
+        {
+            /* Set up the value with maximum fast references */
+            NewValue.Value = (ULONG_PTR)Object | MAX_FAST_REFS;
+        }
+        else
+        {
+            /* Write the object address itself (which is empty) */
+            NewValue.Value = (ULONG_PTR)Object;
+        }
+        
+        /* Do the actual compare exchange */
+        NewValue.Object = ExpChangePushlock(&FastRef->Object,
+                                            NewValue.Object,
+                                            OldValue.Object);
+        if (NewValue.Object != OldValue.Object) continue;
+        
+        /* All done */
+        break;
+    }
+    
+    /* Return the old value */
+    return OldValue;
+}
+
+/* RUNDOWN *******************************************************************/
 
 /*++
  * @name ExfAcquireRundownProtection
@@ -497,8 +703,8 @@ ExDoCallBack(IN OUT PEX_CALLBACK Callback,
  *          function.
  *
  *--*/
-BOOLEAN
 FORCEINLINE
+BOOLEAN
 _ExAcquireRundownProtection(IN PEX_RUNDOWN_REF RunRef)
 {
     ULONG_PTR Value, NewValue;
@@ -538,8 +744,8 @@ _ExAcquireRundownProtection(IN PEX_RUNDOWN_REF RunRef)
  *          function.
  *
  *--*/
-VOID
 FORCEINLINE
+VOID
 _ExReleaseRundownProtection(IN PEX_RUNDOWN_REF RunRef)
 {
     ULONG_PTR Value, NewValue;
@@ -581,8 +787,8 @@ _ExReleaseRundownProtection(IN PEX_RUNDOWN_REF RunRef)
  * @remarks This is the internal macro for system use only.
  *
  *--*/
-VOID
 FORCEINLINE
+VOID
 _ExInitializeRundownProtection(IN PEX_RUNDOWN_REF RunRef)
 {
     /* Set the count to zero */
@@ -605,8 +811,8 @@ _ExInitializeRundownProtection(IN PEX_RUNDOWN_REF RunRef)
  *          necessary, then the slow path is taken through the exported function.
  *
  *--*/
-VOID
 FORCEINLINE
+VOID
 _ExWaitForRundownProtectionRelease(IN PEX_RUNDOWN_REF RunRef)
 {
     ULONG_PTR Value;
@@ -635,8 +841,8 @@ _ExWaitForRundownProtectionRelease(IN PEX_RUNDOWN_REF RunRef)
  * @remarks This is the internal macro for system use only.
  *
  *--*/
-VOID
 FORCEINLINE
+VOID
 _ExRundownCompleted(IN PEX_RUNDOWN_REF RunRef)
 {
     /* Sanity check */
@@ -672,10 +878,10 @@ ExWaitForUnblockPushLock(
 );
 
 /*++
- * @name ExInitializePushLock
+ * @name _ExInitializePushLock
  * INTERNAL MACRO
  *
- *     The ExInitializePushLock macro initializes a PushLock.
+ *     The _ExInitializePushLock macro initializes a PushLock.
  *
  * @params PushLock
  *         Pointer to the pushlock which is to be initialized.
@@ -685,13 +891,14 @@ ExWaitForUnblockPushLock(
  * @remarks None.
  *
  *--*/
-VOID
 FORCEINLINE
-ExInitializePushLock(IN PULONG_PTR PushLock)
+VOID
+_ExInitializePushLock(IN PULONG_PTR PushLock)
 {
     /* Set the value to 0 */
     *PushLock = 0;
 }
+#define ExInitializePushLock _ExInitializePushLock
 
 /*++
  * @name ExAcquirePushLockExclusive
@@ -712,15 +919,14 @@ ExInitializePushLock(IN PULONG_PTR PushLock)
  *          This macro should usually be paired up with KeAcquireCriticalRegion.
  *
  *--*/
-VOID
 FORCEINLINE
+VOID
 ExAcquirePushLockExclusive(PEX_PUSH_LOCK PushLock)
 {
     /* Try acquiring the lock */
     if (InterlockedBitTestAndSet((PLONG)PushLock, EX_PUSH_LOCK_LOCK_V))
     {
         /* Someone changed it, use the slow path */
-        DbgPrint("%s - Contention!\n", __FUNCTION__);
         ExfAcquirePushLockExclusive(PushLock);
     }
 
@@ -728,6 +934,41 @@ ExAcquirePushLockExclusive(PEX_PUSH_LOCK PushLock)
     ASSERT(PushLock->Locked);
 }
 
+/*++
+* @name ExTryToAcquirePushLockExclusive
+* INTERNAL MACRO
+*
+*     The ExAcquirePushLockExclusive macro exclusively acquires a PushLock.
+*
+* @params PushLock
+*         Pointer to the pushlock which is to be acquired.
+*
+* @return None.
+*
+* @remarks The function attempts the quickest route to acquire the lock, which is
+*          to simply set the lock bit.
+*          However, if the pushlock is already shared, the slower path is taken.
+*
+*          Callers of ExAcquirePushLockShared must be running at IRQL <= APC_LEVEL.
+*          This macro should usually be paired up with KeAcquireCriticalRegion.
+*
+*--*/
+FORCEINLINE
+BOOLEAN
+ExTryToAcquirePushLockExclusive(PEX_PUSH_LOCK PushLock)
+{
+    /* Try acquiring the lock */
+    if (InterlockedBitTestAndSet((PLONG)PushLock, EX_PUSH_LOCK_LOCK_V))
+    {
+        /* Can't acquire */
+        return FALSE;
+    }
+
+    /* Got acquired */
+    ASSERT (PushLock->Locked);
+    return TRUE;
+}
+
 /*++
  * @name ExAcquirePushLockShared
  * INTERNAL MACRO
@@ -747,8 +988,8 @@ ExAcquirePushLockExclusive(PEX_PUSH_LOCK PushLock)
  *          This macro should usually be paired up with KeAcquireCriticalRegion.
  *
  *--*/
-VOID
 FORCEINLINE
+VOID
 ExAcquirePushLockShared(PEX_PUSH_LOCK PushLock)
 {
     EX_PUSH_LOCK NewValue;
@@ -758,7 +999,6 @@ ExAcquirePushLockShared(PEX_PUSH_LOCK PushLock)
     if (ExpChangePushlock(PushLock, NewValue.Ptr, 0))
     {
         /* Someone changed it, use the slow path */
-        DbgPrint("%s - Contention!\n", __FUNCTION__);
         ExfAcquirePushLockShared(PushLock);
     }
 
@@ -783,8 +1023,8 @@ ExAcquirePushLockShared(PEX_PUSH_LOCK PushLock)
  *          to simply set the lock bit and remove any other bits.
  *
  *--*/
-BOOLEAN
 FORCEINLINE
+BOOLEAN
 ExConvertPushLockSharedToExclusive(IN PEX_PUSH_LOCK PushLock)
 {
     EX_PUSH_LOCK OldValue;
@@ -822,10 +1062,10 @@ ExConvertPushLockSharedToExclusive(IN PEX_PUSH_LOCK PushLock)
  *          Callers of ExWaitOnPushLock must be running at IRQL <= APC_LEVEL.
  *
  *--*/
-VOID
 FORCEINLINE
+VOID
 ExWaitOnPushLock(PEX_PUSH_LOCK PushLock)
-{  
+{
     /* Check if we're locked */
     if (PushLock->Locked)
     {
@@ -849,7 +1089,7 @@ ExWaitOnPushLock(PEX_PUSH_LOCK PushLock)
  *
  * @return None.
  *
- * @remarks The function attempts the quickest route to release the lock, which is 
+ * @remarks The function attempts the quickest route to release the lock, which is
  *          to simply decrease the share count and remove the lock bit.
  *          However, if the pushlock is being waited on then the long path is taken.
  *
@@ -857,8 +1097,8 @@ ExWaitOnPushLock(PEX_PUSH_LOCK PushLock)
  *          This macro should usually be paired up with KeLeaveCriticalRegion.
  *
  *--*/
-VOID
 FORCEINLINE
+VOID
 ExReleasePushLockShared(PEX_PUSH_LOCK PushLock)
 {
     EX_PUSH_LOCK OldValue;
@@ -872,7 +1112,6 @@ ExReleasePushLockShared(PEX_PUSH_LOCK PushLock)
     if (ExpChangePushlock(PushLock, 0, OldValue.Ptr) != OldValue.Ptr)
     {
         /* There are still other people waiting on it */
-        DbgPrint("%s - Contention!\n", __FUNCTION__);
         ExfReleasePushLockShared(PushLock);
     }
 }
@@ -898,8 +1137,8 @@ ExReleasePushLockShared(PEX_PUSH_LOCK PushLock)
  *          This macro should usually be paired up with KeLeaveCriticalRegion.
  *
  *--*/
-VOID
 FORCEINLINE
+VOID
 ExReleasePushLockExclusive(PEX_PUSH_LOCK PushLock)
 {
     EX_PUSH_LOCK OldValue;
@@ -909,8 +1148,8 @@ ExReleasePushLockExclusive(PEX_PUSH_LOCK PushLock)
     ASSERT(PushLock->Waiting || PushLock->Shared == 0);
 
     /* Unlock the pushlock */
-    OldValue.Value = InterlockedExchangeAddSizeT((PLONG)PushLock,
-                                                 -EX_PUSH_LOCK_LOCK);
+    OldValue.Value = InterlockedExchangeAddSizeT((PSIZE_T)PushLock,
+                                                 -(SIZE_T)EX_PUSH_LOCK_LOCK);
 
     /* Sanity checks */
     ASSERT(OldValue.Locked);
@@ -920,7 +1159,6 @@ ExReleasePushLockExclusive(PEX_PUSH_LOCK PushLock)
     if ((OldValue.Waiting) && !(OldValue.Waking))
     {
         /* Wake it up */
-        DbgPrint("%s - Contention!\n", __FUNCTION__);
         ExfTryToWakePushLock(PushLock);
     }
 }
@@ -936,7 +1174,7 @@ ExReleasePushLockExclusive(PEX_PUSH_LOCK PushLock)
  *
  * @return None.
  *
- * @remarks The function attempts the quickest route to release the lock, which is 
+ * @remarks The function attempts the quickest route to release the lock, which is
  *          to simply clear all the fields and decrease the share count if required.
  *          However, if the pushlock is being waited on then the long path is taken.
  *
@@ -944,8 +1182,8 @@ ExReleasePushLockExclusive(PEX_PUSH_LOCK PushLock)
  *          This macro should usually be paired up with KeLeaveCriticalRegion.
  *
  *--*/
-VOID
 FORCEINLINE
+VOID
 ExReleasePushLock(PEX_PUSH_LOCK PushLock)
 {
     EX_PUSH_LOCK OldValue = *PushLock;
@@ -958,7 +1196,7 @@ ExReleasePushLock(PEX_PUSH_LOCK PushLock)
     if (OldValue.Shared > 1)
     {
         /* Decrease the share count */
-        NewValue.Value = OldValue.Value &~ EX_PUSH_LOCK_SHARE_INC;
+        NewValue.Value = OldValue.Value - EX_PUSH_LOCK_SHARE_INC;
     }
     else
     {
@@ -972,23 +1210,174 @@ ExReleasePushLock(PEX_PUSH_LOCK PushLock)
          OldValue.Ptr))
     {
         /* We have waiters, use the long path */
-        DbgPrint("%s - Contention!\n", __FUNCTION__);
         ExfReleasePushLock(PushLock);
     }
 }
 
+/* FAST MUTEX INLINES *********************************************************/
+
+FORCEINLINE
+VOID
+_ExAcquireFastMutexUnsafe(IN PFAST_MUTEX FastMutex)
+{
+    PKTHREAD Thread = KeGetCurrentThread();
+    
+    /* Sanity check */
+    ASSERT((KeGetCurrentIrql() == APC_LEVEL) ||
+           (Thread->CombinedApcDisable != 0) ||
+           (Thread->Teb == NULL) ||
+           (Thread->Teb >= (PTEB)MM_SYSTEM_RANGE_START));
+    ASSERT(FastMutex->Owner != Thread);
+    
+    /* Decrease the count */
+    if (InterlockedDecrement(&FastMutex->Count))
+    {
+        /* Someone is still holding it, use slow path */
+        KiAcquireFastMutex(FastMutex);
+    }
+    
+    /* Set the owner */
+    FastMutex->Owner = Thread;
+}
+
+FORCEINLINE
+VOID
+_ExReleaseFastMutexUnsafe(IN OUT PFAST_MUTEX FastMutex)
+{
+    ASSERT((KeGetCurrentIrql() == APC_LEVEL) ||
+           (KeGetCurrentThread()->CombinedApcDisable != 0) ||
+           (KeGetCurrentThread()->Teb == NULL) ||
+           (KeGetCurrentThread()->Teb >= (PTEB)MM_SYSTEM_RANGE_START));
+    ASSERT(FastMutex->Owner == KeGetCurrentThread());
+    
+    /* Erase the owner */
+    FastMutex->Owner = NULL;
+    
+    /* Increase the count */
+    if (InterlockedIncrement(&FastMutex->Count) <= 0)
+    {
+        /* Someone was waiting for it, signal the waiter */
+        KeSetEventBoostPriority(&FastMutex->Event, NULL);
+    }
+}
+
+FORCEINLINE
+VOID
+_ExAcquireFastMutex(IN PFAST_MUTEX FastMutex)
+{
+    KIRQL OldIrql;
+    ASSERT(KeGetCurrentIrql() <= APC_LEVEL);
+    
+    /* Raise IRQL to APC */
+    KeRaiseIrql(APC_LEVEL, &OldIrql);
+    
+    /* Decrease the count */
+    if (InterlockedDecrement(&FastMutex->Count))
+    {
+        /* Someone is still holding it, use slow path */
+        KiAcquireFastMutex(FastMutex);
+    }
+    
+    /* Set the owner and IRQL */
+    FastMutex->Owner = KeGetCurrentThread();
+    FastMutex->OldIrql = OldIrql;
+}
+
+FORCEINLINE
+VOID
+_ExReleaseFastMutex(IN OUT PFAST_MUTEX FastMutex)
+{
+    KIRQL OldIrql;
+    ASSERT(KeGetCurrentIrql() == APC_LEVEL);
+    
+    /* Erase the owner */
+    FastMutex->Owner = NULL;
+    OldIrql = (KIRQL)FastMutex->OldIrql;
+    
+    /* Increase the count */
+    if (InterlockedIncrement(&FastMutex->Count) <= 0)
+    {
+        /* Someone was waiting for it, signal the waiter */
+        KeSetEventBoostPriority(&FastMutex->Event, NULL);
+    }
+    
+    /* Lower IRQL back */
+    KeLowerIrql(OldIrql);
+}
+
+FORCEINLINE
+BOOLEAN
+_ExTryToAcquireFastMutex(IN OUT PFAST_MUTEX FastMutex)
+{
+    KIRQL OldIrql;
+    ASSERT(KeGetCurrentIrql() <= APC_LEVEL);
+    
+    /* Raise to APC_LEVEL */
+    KeRaiseIrql(APC_LEVEL, &OldIrql);
+    
+    /* Check if we can quickly acquire it */
+    if (InterlockedCompareExchange(&FastMutex->Count, 0, 1) == 1)
+    {
+        /* We have, set us as owners */
+        FastMutex->Owner = KeGetCurrentThread();
+        FastMutex->OldIrql = OldIrql;
+        return TRUE;
+    }
+    else
+    {
+        /* Acquire attempt failed */
+        KeLowerIrql(OldIrql);
+        YieldProcessor();
+        return FALSE;
+    }
+}
+
+FORCEINLINE
+VOID
+_ExEnterCriticalRegionAndAcquireFastMutexUnsafe(IN OUT PFAST_MUTEX FastMutex)
+{
+    /* Enter the Critical Region */
+    KeEnterCriticalRegion();
+
+    /* Acquire the mutex unsafely */
+    _ExAcquireFastMutexUnsafe(FastMutex);
+}
+
+FORCEINLINE
+VOID
+_ExReleaseFastMutexUnsafeAndLeaveCriticalRegion(IN OUT PFAST_MUTEX FastMutex)
+{
+    /* Release the mutex unsafely */
+    _ExReleaseFastMutexUnsafe(FastMutex);
+
+    /* Leave the critical region */
+    KeLeaveCriticalRegion();
+}
+
 /* OTHER FUNCTIONS **********************************************************/
 
-LONGLONG
-FASTCALL
-ExfpInterlockedExchange64(
-    LONGLONG volatile * Destination,
-    PLONGLONG Exchange
+BOOLEAN
+NTAPI
+ExTryToAcquireResourceExclusiveLite(
+    IN PERESOURCE Resource
 );
 
 NTSTATUS
 ExpSetTimeZoneInformation(PTIME_ZONE_INFORMATION TimeZoneInformation);
 
+BOOLEAN
+NTAPI
+ExAcquireTimeRefreshLock(BOOLEAN Wait);
+
+VOID
+NTAPI
+ExReleaseTimeRefreshLock(VOID);
+
+VOID
+NTAPI
+ExUpdateSystemTimeFromCmos(IN BOOLEAN UpdateInterruptTime,
+                           IN ULONG MaxSepInSeconds);
+
 NTSTATUS
 NTAPI
 ExpAllocateLocallyUniqueId(OUT LUID *LocallyUniqueId);
@@ -997,6 +1386,18 @@ VOID
 NTAPI
 ExTimerRundown(VOID);
 
+VOID
+NTAPI
+HeadlessInit(
+    IN PLOADER_PARAMETER_BLOCK LoaderBlock
+);
+
+VOID
+NTAPI
+XIPInit(
+    IN PLOADER_PARAMETER_BLOCK LoaderBlock
+);
+
 #define InterlockedDecrementUL(Addend) \
    (ULONG)InterlockedDecrement((PLONG)(Addend))
 
@@ -1014,8 +1415,3 @@ ExTimerRundown(VOID);
 
 #define ExfInterlockedCompareExchange64UL(Destination, Exchange, Comperand) \
    (ULONGLONG)ExfInterlockedCompareExchange64((PLONGLONG)(Destination), (PLONGLONG)(Exchange), (PLONGLONG)(Comperand))
-
-#define ExfpInterlockedExchange64UL(Target, Value) \
-   (ULONGLONG)ExfpInterlockedExchange64((PLONGLONG)(Target), (PLONGLONG)(Value))
-
-#endif /* __NTOSKRNL_INCLUDE_INTERNAL_EXECUTIVE_H */