Ignore high bit of spin count.

1ca3de36 · Alexandre Julliard · 6a032491 · 1ca3de36
Commit 1ca3de36 authored Jul 13, 2005 by Alexandre Julliard
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critsection.c dlls/ntdll/critsection.c +2 -1

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--- a/dlls/ntdll/critsection.c
+++ b/dlls/ntdll/critsection.c
@@ -135,7 +135,8 @@ NTSTATUS WINAPI RtlInitializeCriticalSectionAndSpinCount( RTL_CRITICAL_SECTION *
    crit->RecursionCount = 0;
    crit->OwningThread   = 0;
    crit->LockSemaphore  = 0;
-    crit->SpinCount      = spincount;
+    if (NtCurrentTeb()->Peb->NumberOfProcessors <= 1) spincount = 0;
+    crit->SpinCount = spincount & ~0x80000000;
    return STATUS_SUCCESS;
 }