[PATCH v4 11/11] ntoskrnl.exe: Implement Ex(Acquire/Release)FastMutex.

[Derek Lesho]

Signed-off-by: Derek Lesho <dereklesho52 at Gmail.com>
---
 dlls/ntoskrnl.exe/ntoskrnl.exe.spec |  2 ++
 dlls/ntoskrnl.exe/sync.c            | 21 +++++++++++++++++++++
 2 files changed, 23 insertions(+)

diff --git a/dlls/ntoskrnl.exe/ntoskrnl.exe.spec b/dlls/ntoskrnl.exe/ntoskrnl.exe.spec
index 8c347999ba..d6edf6143a 100644
--- a/dlls/ntoskrnl.exe/ntoskrnl.exe.spec
+++ b/dlls/ntoskrnl.exe/ntoskrnl.exe.spec
@@ -1,4 +1,5 @@
 @ stdcall -fastcall ExAcquireFastMutexUnsafe(ptr)
+@ stdcall -arch=x86_64 ExAcquireFastMutex(ptr)
 @ stub ExAcquireRundownProtection
 @ stub ExAcquireRundownProtectionEx
 @ stub ExInitializeRundownProtection
@@ -9,6 +10,7 @@
 @ stdcall -fastcall -arch=i386 ExInterlockedPushEntrySList (ptr ptr ptr) NTOSKRNL_ExInterlockedPushEntrySList
 @ stub ExReInitializeRundownProtection
 @ stdcall -fastcall ExReleaseFastMutexUnsafe(ptr)
+@ stdcall -arch=x86_64 ExReleaseFastMutex(ptr)
 @ stdcall -fastcall ExReleaseResourceLite(ptr)
 @ stub ExReleaseRundownProtection
 @ stub ExReleaseRundownProtectionEx
diff --git a/dlls/ntoskrnl.exe/sync.c b/dlls/ntoskrnl.exe/sync.c
index e97c6993f9..11fc945041 100644
--- a/dlls/ntoskrnl.exe/sync.c
+++ b/dlls/ntoskrnl.exe/sync.c
@@ -1167,3 +1167,24 @@ ULONG WINAPI ExIsResourceAcquiredSharedLite( ERESOURCE *resource )
 
     return ret;
 }
+
+
+/*********************************************************************
+ *           ExAcquireFastMutex    (NTOSKRNL.@)
+ */
+void WINAPI ExAcquireFastMutex(PFAST_MUTEX mutex)
+{
+    /* TODO: The safe variant raises thread to APC_LEVEL
+       and stores the previous IRQL in mutex->OldIrql */
+    ExAcquireFastMutexUnsafe( mutex );
+}
+
+
+ /*********************************************************************
+ *           ExReleaseFastMutex    (NTOSKRNL.@)
+ */
+void WINAPI ExReleaseFastMutex(PFAST_MUTEX mutex)
+{
+    ExReleaseFastMutexUnsafe( mutex );
+    /* TODO: the safe variant restores the IRQL to mutex->OldIrql */
+}
-- 
2.20.1