include: Add YieldProcessor().

Signed-off-by: Zebediah Figura <z.figura12@gmail.com> Signed-off-by: Alexandre Julliard <julliard@winehq.org>

include: Add YieldProcessor().
86fc30c1 · Zebediah Figura · Alexandre Julliard · a3c295d4 · 86fc30c1
Commit 86fc30c1 authored Jan 20, 2021 by Zebediah Figura Committed by Alexandre Julliard Jan 21, 2021
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winnt.h include/winnt.h +13 -0

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--- a/include/winnt.h
+++ b/include/winnt.h
@@ -7154,6 +7154,19 @@ static FORCEINLINE void MemoryBarrier(void)

 #endif  /* __GNUC__ */

+static FORCEINLINE void YieldProcessor(void)
+{
+#ifdef __GNUC__
+#if defined(__i386__) || defined(__x86_64__)
+    __asm__ __volatile__( "rep; nop" : : : "memory" );
+#elif defined(__arm__) || defined(__aarch64__)
+    __asm__ __volatile__( "dmb ishst\n\tyield" : : : "memory" );
+#else
+    __asm__ __volatile__( "" : : : "memory" );
+#endif
+#endif
+}
+
 #ifdef __cplusplus
 }
 #endif