Add yield instruction for arm architectures

Nicolas Fauvet · Nicolas Fauvet · commit 5cb15ddd9153 · 2022-08-02T12:39:35.000+02:00
diff --git a/Disruptor/BuildConfig.h b/Disruptor/BuildConfig.h
@@ -32,7 +32,13 @@
 
 # define DISRUPTOR_CPP_11
 
-# if __x86_64__ || __ppc64__
+# if __arm__
+#  define DISRUPTOR_CPU_ARM
+#  define DISRUPTOR_CPU_ARM_32
+# #elif __aarch64__
+#  define DISRUPTOR_CPU_ARM
+#  define DISRUPTOR_CPU_ARM_64
+# elif __x86_64__ || __ppc64__
 #  define DISRUPTOR_CPU_64
 # else
 #  define DISRUPTOR_CPU_32
diff --git a/Disruptor/SpinWait.cpp b/Disruptor/SpinWait.cpp
@@ -118,11 +118,18 @@ namespace Disruptor
 
 #elif defined(DISRUPTOR_GNUC_COMPILER)
 
+#if defined(DISRUPTOR_CPU_ARM)
         asm volatile
-            (
-                "rep\n"
-                "nop"
-                );
+        (
+            "yield"
+        );
+#else
+        asm volatile
+        (
+            "rep\n"
+            "nop"
+        );
+#endif
 
 #else
 
