ntdll: Use YieldProcessor() in RtlEnterCriticalSection().

Signed-off-by: Zebediah Figura <zfigura@codeweavers.com> Signed-off-by: Alexandre Julliard <julliard@winehq.org>

ntdll: Use YieldProcessor() in RtlEnterCriticalSection().
615a2ab5 · Zebediah Figura · Alexandre Julliard · cfb1d205 · 615a2ab5
Commit 615a2ab5 authored Feb 14, 2022 by Zebediah Figura Committed by Alexandre Julliard Feb 15, 2022
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sync.c dlls/ntdll/sync.c +1 -10

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--- a/dlls/ntdll/sync.c
+++ b/dlls/ntdll/sync.c
@@ -373,15 +373,6 @@ NTSTATUS WINAPI RtlpUnWaitCriticalSection( RTL_CRITICAL_SECTION *crit )
 }


-static inline void small_pause(void)
-{
-#ifdef __i386__
-    __asm__ __volatile__( "rep;nop" : : : "memory" );
-#else
-    __asm__ __volatile__( "" : : : "memory" );
-#endif
-}
-
 /******************************************************************************
 *      RtlEnterCriticalSection   (NTDLL.@)
 */
@@ -399,7 +390,7 @@ NTSTATUS WINAPI RtlEnterCriticalSection( RTL_CRITICAL_SECTION *crit )
            {
                if (InterlockedCompareExchange( &crit->LockCount, 0, -1 ) == -1) goto done;
            }
-            small_pause();
+            YieldProcessor();
        }
    }