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-rw-r--r--erts/include/internal/ethread.h7
1 files changed, 6 insertions, 1 deletions
diff --git a/erts/include/internal/ethread.h b/erts/include/internal/ethread.h
index 7307bde8d9..9b1313c538 100644
--- a/erts/include/internal/ethread.h
+++ b/erts/include/internal/ethread.h
@@ -220,6 +220,7 @@ typedef OSPPDKEY ethr_tsd_key;
#define ETHR_HAVE_THREAD_NICENESS
#define ETHR_PPC_HAVE_NO_LWSYNC
+#undef ETHR_HAVE_NATIVE_SPINLOCKS
#else /* No supported thread lib found */
@@ -457,7 +458,11 @@ extern ethr_runtime_t ethr_runtime__;
# endif
#endif
-#ifdef VALGRIND /* mutex as fallback for spinlock for VALGRIND */
+#if defined(VALGRIND) || defined(ETHR_OSE_THREADS)
+/* mutex as fallback for spinlock for VALGRIND and OSE.
+ OSE cannot use spinlocks as processes working on the
+ same execution unit have a tendency to deadlock.
+ */
# undef ETHR_HAVE_NATIVE_SPINLOCKS
# undef ETHR_HAVE_NATIVE_RWSPINLOCKS
#else