update ceph source to reef 18.1.2

[ceph.git] / ceph / src / rocksdb / port / lang.h

diff --git a/ceph/src/rocksdb/port/lang.h b/ceph/src/rocksdb/port/lang.h
index a5fd364907c7da961d40a6e9ebd29609d5da3dcd..52c597acdc0f540b6c51b6fb20cefccb6fb645c0 100644 (file)
--- a/ceph/src/rocksdb/port/lang.h
+++ b/ceph/src/rocksdb/port/lang.h
@@ -11,6 +11,60 @@
 #elif defined(__GNUC__) && __GNUC__ >= 7
 #define FALLTHROUGH_INTENDED [[gnu::fallthrough]]
 #else
-#define FALLTHROUGH_INTENDED do {} while (0)
+#define FALLTHROUGH_INTENDED \
+  do {                       \
+  } while (0)
 #endif
 #endif
+
+#define DECLARE_DEFAULT_MOVES(Name) \
+  Name(Name&&) noexcept = default;  \
+  Name& operator=(Name&&) = default
+
+// ASAN (Address sanitizer)
+
+#if defined(__clang__)
+#if defined(__has_feature)
+#if __has_feature(address_sanitizer)
+#define MUST_FREE_HEAP_ALLOCATIONS 1
+#endif  // __has_feature(address_sanitizer)
+#endif  // defined(__has_feature)
+#else   // __clang__
+#ifdef __SANITIZE_ADDRESS__
+#define MUST_FREE_HEAP_ALLOCATIONS 1
+#endif  // __SANITIZE_ADDRESS__
+#endif  // __clang__
+
+#ifdef ROCKSDB_VALGRIND_RUN
+#define MUST_FREE_HEAP_ALLOCATIONS 1
+#endif  // ROCKSDB_VALGRIND_RUN
+
+// Coding guidelines say to avoid static objects with non-trivial destructors,
+// because it's easy to cause trouble (UB) in static destruction. This
+// macro makes it easier to define static objects that are normally never
+// destructed, except are destructed when running under ASAN. This should
+// avoid unexpected, unnecessary destruction behavior in production.
+// Note that constructor arguments can be provided as in
+//   STATIC_AVOID_DESTRUCTION(Foo, foo)(arg1, arg2);
+#ifdef MUST_FREE_HEAP_ALLOCATIONS
+#define STATIC_AVOID_DESTRUCTION(Type, name) static Type name
+constexpr bool kMustFreeHeapAllocations = true;
+#else
+#define STATIC_AVOID_DESTRUCTION(Type, name) static Type& name = *new Type
+constexpr bool kMustFreeHeapAllocations = false;
+#endif
+
+// TSAN (Thread sanitizer)
+
+// For simplicity, standardize on the GCC define
+#if defined(__clang__)
+#if defined(__has_feature) && __has_feature(thread_sanitizer)
+#define __SANITIZE_THREAD__ 1
+#endif  // __has_feature(thread_sanitizer)
+#endif  // __clang__
+
+#ifdef __SANITIZE_THREAD__
+#define TSAN_SUPPRESSION __attribute__((no_sanitize("thread")))
+#else
+#define TSAN_SUPPRESSION
+#endif  // TSAN_SUPPRESSION