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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-21 11:54:28 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-21 11:54:28 +0000 |
commit | e6918187568dbd01842d8d1d2c808ce16a894239 (patch) | |
tree | 64f88b554b444a49f656b6c656111a145cbbaa28 /src/rocksdb/port/lang.h | |
parent | Initial commit. (diff) | |
download | ceph-e6918187568dbd01842d8d1d2c808ce16a894239.tar.xz ceph-e6918187568dbd01842d8d1d2c808ce16a894239.zip |
Adding upstream version 18.2.2.upstream/18.2.2
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/rocksdb/port/lang.h')
-rw-r--r-- | src/rocksdb/port/lang.h | 70 |
1 files changed, 70 insertions, 0 deletions
diff --git a/src/rocksdb/port/lang.h b/src/rocksdb/port/lang.h new file mode 100644 index 000000000..52c597acd --- /dev/null +++ b/src/rocksdb/port/lang.h @@ -0,0 +1,70 @@ +// Copyright (c) 2011-present, Facebook, Inc. All rights reserved. +// This source code is licensed under both the GPLv2 (found in the +// COPYING file in the root directory) and Apache 2.0 License +// (found in the LICENSE.Apache file in the root directory). + +#pragma once + +#ifndef FALLTHROUGH_INTENDED +#if defined(__clang__) +#define FALLTHROUGH_INTENDED [[clang::fallthrough]] +#elif defined(__GNUC__) && __GNUC__ >= 7 +#define FALLTHROUGH_INTENDED [[gnu::fallthrough]] +#else +#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 |