13/13: [NTOSKRNL] Implement ExfReInitializeRundownProtectionCacheAware()

[Pierre Schweitzer]

https://git.reactos.org/?p=reactos.git;a=commitdiff;h=7ed17cd71406eac9f37a2…

commit 7ed17cd71406eac9f37a231b6322a9d5060b6574
Author:     Pierre Schweitzer <pierre(a)reactos.org>
AuthorDate: Sat Nov 17 16:41:09 2018 +0100
Commit:     Pierre Schweitzer <pierre(a)reactos.org>
CommitDate: Sat Nov 17 16:44:37 2018 +0100

    [NTOSKRNL] Implement ExfReInitializeRundownProtectionCacheAware()
    
    We're done with cache-aware rundown protections!
---
 ntoskrnl/ex/rundown.c | 25 ++++++++++++++++++++-----
 1 file changed, 20 insertions(+), 5 deletions(-)

diff --git a/ntoskrnl/ex/rundown.c b/ntoskrnl/ex/rundown.c
index 240d599703..00e2c3b772 100644
--- a/ntoskrnl/ex/rundown.c
+++ b/ntoskrnl/ex/rundown.c
@@ -376,8 +376,6 @@ ExfWaitForRundownProtectionRelease(IN PEX_RUNDOWN_REF RunRef)
     ASSERT(WaitBlock.Count == 0);
 }
 
-/* FIXME: STUBS **************************************************************/
-
 /*
  * @implemented NT5.2
  */
@@ -529,14 +527,31 @@ ExfRundownCompletedCacheAware(IN PEX_RUNDOWN_REF_CACHE_AWARE
RunRefCacheAware)
 }
 
 /*
- * @unimplemented NT5.2
+ * @implemented NT5.2
  */
 VOID
 FASTCALL
 ExfReInitializeRundownProtectionCacheAware(IN PEX_RUNDOWN_REF_CACHE_AWARE
RunRefCacheAware)
 {
-    DBG_UNREFERENCED_PARAMETER(RunRefCacheAware);
-    UNIMPLEMENTED;
+    PEX_RUNDOWN_REF RunRef;
+    ULONG ProcCount, Current;
+
+    ProcCount = RunRefCacheAware->Number;
+    /* No proc, nothing to do */
+    if (ProcCount == 0)
+    {
+        return;
+    }
+
+    /* We will mark all our runrefs inactive */
+    for (Current = 0; Current < ProcCount; ++Current)
+    {
+        /* Get the runref for the proc */
+        RunRef = ExGetRunRefForGivenProcessor(RunRefCacheAware, Current);
+        ASSERT((RunRef->Count & EX_RUNDOWN_ACTIVE) != 0);
+
+        ExpSetRundown(RunRef, 0);
+    }
 }
 
 /*