Update yield logic for ARM processor (#1325)

open-telemetry · Apr 12, 2022 · 75c2a8f · 75c2a8f
1 parent da2911c
commit 75c2a8f
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Showing 2 changed files with 2 additions and 4 deletions.
diff --git a/api/include/opentelemetry/common/spin_lock_mutex.h b/api/include/opentelemetry/common/spin_lock_mutex.h
@@ -101,9 +101,7 @@ class SpinLockMutex
         __builtin_ia32_pause();
 #  endif
 #elif defined(__arm__)
-        // This intrinsic should fail to be found if YIELD is not supported on the current
-        // processor.
-        __yield();
+        __asm__ volatile("yield" ::: "memory");
 #else
         // TODO: Issue PAGE/YIELD on other architectures.
 #endif

diff --git a/api/test/common/spinlock_benchmark.cc b/api/test/common/spinlock_benchmark.cc
@@ -93,7 +93,7 @@ static void BM_ProcYieldSpinLockThrashing(benchmark::State &s)
           __builtin_ia32_pause();
 #  endif
 #elif defined(__arm__)
-          __yield();
+          __asm__ volatile("yield" ::: "memory");
 #endif
         }
       },