1 files changed, 35 insertions, 0 deletions
diff --git a/src/H5FDsubfiling/mercury/src/util/mercury_thread_annotation.h b/src/H5FDsubfiling/mercury/src/util/mercury_thread_annotation.h
new file mode 100644
index 0000000..50056a1
--- /dev/null
+++ b/src/H5FDsubfiling/mercury/src/util/mercury_thread_annotation.h
@@ -0,0 +1,35 @@
+/**
+ * Copyright (c) 2013-2021 UChicago Argonne, LLC and The HDF Group.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#ifndef MERCURY_THREAD_ANNOTATION_H
+#define MERCURY_THREAD_ANNOTATION_H
+
+/* Enable thread safety attributes only with clang.
+ * The attributes can be safely erased when compiling with other compilers. */
+#if defined(__clang__) && (__clang_major__ > 3)
+#define HG_THREAD_ANNOTATION_ATTRIBUTE__(x) __attribute__((x))
+#else
+#define HG_THREAD_ANNOTATION_ATTRIBUTE__(x) // no-op
+#endif
+
+#define HG_LOCK_CAPABILITY(x) HG_THREAD_ANNOTATION_ATTRIBUTE__(capability(x))
+
+#define HG_LOCK_ACQUIRE(...) HG_THREAD_ANNOTATION_ATTRIBUTE__(acquire_capability(__VA_ARGS__))
+
+#define HG_LOCK_ACQUIRE_SHARED(...) HG_THREAD_ANNOTATION_ATTRIBUTE__(acquire_shared_capability(__VA_ARGS__))
+
+#define HG_LOCK_RELEASE(...) HG_THREAD_ANNOTATION_ATTRIBUTE__(release_capability(__VA_ARGS__))
+
+#define HG_LOCK_RELEASE_SHARED(...) HG_THREAD_ANNOTATION_ATTRIBUTE__(release_shared_capability(__VA_ARGS__))
+
+#define HG_LOCK_TRY_ACQUIRE(...) HG_THREAD_ANNOTATION_ATTRIBUTE__(try_acquire_capability(__VA_ARGS__))
+
+#define HG_LOCK_TRY_ACQUIRE_SHARED(...)                                                                      \
+    HG_THREAD_ANNOTATION_ATTRIBUTE__(try_acquire_shared_capability(__VA_ARGS__))
+
+#define HG_LOCK_NO_THREAD_SAFETY_ANALYSIS HG_THREAD_ANNOTATION_ATTRIBUTE__(no_thread_safety_analysis)
+
+#endif /* MERCURY_THREAD_ANNOTATION_H */