| // Copyright (c) 2011 Helge Bahmann |
| // Copyright (c) 2020 Andrey Semashev |
| // |
| // Distributed under the Boost Software License, Version 1.0. |
| // See accompanying file LICENSE_1_0.txt or copy at |
| // http://www.boost.org/LICENSE_1_0.txt) |
| |
| // Verify that definition of the "LOCK_FREE" macros and the |
| // "is_lock_free" members is consistent and matches expectations. |
| // Also, if any operation is lock-free, then the platform |
| // implementation must provide overridden fence implementations. |
| |
| #include <boost/atomic.hpp> |
| |
| #include <iostream> |
| #include <boost/config.hpp> |
| #include <boost/core/lightweight_test.hpp> |
| #include "aligned_object.hpp" |
| |
| static const char* const lock_free_level[] = |
| { |
| "never", |
| "sometimes", |
| "always" |
| }; |
| |
| template< typename T > |
| void verify_lock_free(const char* type_name, int lock_free_macro_val, int lock_free_expect) |
| { |
| BOOST_TEST(lock_free_macro_val >= 0 && lock_free_macro_val <= 2); |
| BOOST_TEST_EQ(lock_free_macro_val, lock_free_expect); |
| |
| boost::atomic<T> value; |
| |
| if (lock_free_macro_val == 0) |
| BOOST_TEST(!value.is_lock_free()); |
| if (lock_free_macro_val == 2) |
| BOOST_TEST(value.is_lock_free()); |
| |
| BOOST_TEST_EQ(boost::atomic<T>::is_always_lock_free, (lock_free_expect == 2)); |
| |
| std::cout << "atomic<" << type_name << "> is " << lock_free_level[lock_free_macro_val] << " lock free\n"; |
| |
| // atomic<T> may use larger storage than sizeof(T) to achieve lock-free property. In this case atomic_ref<T> may not be lock-free. |
| if (sizeof(boost::atomic<T>) == sizeof(T)) |
| { |
| aligned_object<T, boost::atomic_ref<T>::required_alignment> object; |
| boost::atomic_ref<T> ref(object.get()); |
| |
| BOOST_TEST_EQ(ref.is_lock_free(), value.is_lock_free()); |
| BOOST_TEST_EQ(boost::atomic_ref<T>::is_always_lock_free, boost::atomic<T>::is_always_lock_free); |
| } |
| } |
| |
| #if (defined(__GNUC__) || defined(__SUNPRO_CC)) && defined(__i386__) |
| |
| #define EXPECT_CHAR_LOCK_FREE 2 |
| #define EXPECT_SHORT_LOCK_FREE 2 |
| #define EXPECT_INT_LOCK_FREE 2 |
| #define EXPECT_LONG_LOCK_FREE 2 |
| #if defined(BOOST_ATOMIC_DETAIL_X86_HAS_CMPXCHG8B) || defined(__GCC_HAVE_SYNC_COMPARE_AND_SWAP_8) ||\ |
| defined(__i586__) || defined(__i686__) || defined(__SSE__) |
| #define EXPECT_LLONG_LOCK_FREE 2 |
| #else |
| #define EXPECT_LLONG_LOCK_FREE 0 |
| #endif |
| #define EXPECT_INT128_LOCK_FREE 0 |
| #define EXPECT_POINTER_LOCK_FREE 2 |
| #define EXPECT_BOOL_LOCK_FREE 2 |
| |
| #elif (defined(__GNUC__) || defined(__SUNPRO_CC)) && defined(__x86_64__) |
| |
| #define EXPECT_CHAR_LOCK_FREE 2 |
| #define EXPECT_SHORT_LOCK_FREE 2 |
| #define EXPECT_INT_LOCK_FREE 2 |
| #define EXPECT_LONG_LOCK_FREE 2 |
| #define EXPECT_LLONG_LOCK_FREE 2 |
| #if defined(BOOST_ATOMIC_DETAIL_X86_HAS_CMPXCHG16B) || defined(__GCC_HAVE_SYNC_COMPARE_AND_SWAP_16) |
| #define EXPECT_INT128_LOCK_FREE 2 |
| #else |
| #define EXPECT_INT128_LOCK_FREE 0 |
| #endif |
| #define EXPECT_POINTER_LOCK_FREE 2 |
| #define EXPECT_BOOL_LOCK_FREE 2 |
| |
| #elif defined(__GNUC__) && (defined(__POWERPC__) || defined(__PPC__)) |
| |
| #define EXPECT_CHAR_LOCK_FREE 2 |
| #define EXPECT_CHAR16_T_LOCK_FREE 2 |
| #define EXPECT_CHAR32_T_LOCK_FREE 2 |
| #define EXPECT_WCHAR_T_LOCK_FREE 2 |
| #define EXPECT_SHORT_LOCK_FREE 2 |
| #define EXPECT_INT_LOCK_FREE 2 |
| #define EXPECT_LONG_LOCK_FREE 2 |
| #if defined(__powerpc64__) |
| #define EXPECT_LLONG_LOCK_FREE 2 |
| #else |
| #define EXPECT_LLONG_LOCK_FREE 0 |
| #endif |
| #define EXPECT_INT128_LOCK_FREE 0 |
| #define EXPECT_POINTER_LOCK_FREE 2 |
| #define EXPECT_BOOL_LOCK_FREE 2 |
| |
| #elif defined(__GNUC__) && defined(__alpha__) |
| |
| #define EXPECT_CHAR_LOCK_FREE 2 |
| #define EXPECT_CHAR16_T_LOCK_FREE 2 |
| #define EXPECT_CHAR32_T_LOCK_FREE 2 |
| #define EXPECT_WCHAR_T_LOCK_FREE 2 |
| #define EXPECT_SHORT_LOCK_FREE 2 |
| #define EXPECT_INT_LOCK_FREE 2 |
| #define EXPECT_LONG_LOCK_FREE 2 |
| #define EXPECT_LLONG_LOCK_FREE 2 |
| #define EXPECT_INT128_LOCK_FREE 0 |
| #define EXPECT_POINTER_LOCK_FREE 2 |
| #define EXPECT_BOOL_LOCK_FREE 2 |
| |
| #elif defined(__GNUC__) && defined(__aarch64__) |
| |
| #define EXPECT_CHAR_LOCK_FREE 2 |
| #define EXPECT_SHORT_LOCK_FREE 2 |
| #define EXPECT_INT_LOCK_FREE 2 |
| #define EXPECT_LONG_LOCK_FREE 2 |
| #define EXPECT_LLONG_LOCK_FREE 2 |
| #define EXPECT_INT128_LOCK_FREE 2 |
| #define EXPECT_POINTER_LOCK_FREE 2 |
| #define EXPECT_BOOL_LOCK_FREE 2 |
| |
| #elif defined(__GNUC__) && defined(__arm__) &&\ |
| (\ |
| (defined(__ARM_ARCH) && __ARM_ARCH >= 6) ||\ |
| defined(__ARM_ARCH_6__) || defined(__ARM_ARCH_6J__) ||\ |
| defined(__ARM_ARCH_6K__) || defined(__ARM_ARCH_6Z__) ||\ |
| defined(__ARM_ARCH_6ZK__) ||\ |
| defined(__ARM_ARCH_7__) || defined(__ARM_ARCH_7A__) ||\ |
| defined(__ARM_ARCH_7R__) || defined(__ARM_ARCH_7M__) ||\ |
| defined(__ARM_ARCH_7EM__) || defined(__ARM_ARCH_7S__) ||\ |
| defined(__ARM_ARCH_8A__)\ |
| ) |
| |
| #define EXPECT_CHAR_LOCK_FREE 2 |
| #define EXPECT_SHORT_LOCK_FREE 2 |
| #define EXPECT_INT_LOCK_FREE 2 |
| #define EXPECT_LONG_LOCK_FREE 2 |
| #if !(defined(__ARM_ARCH_6__) || defined(__ARM_ARCH_6J__) || defined(__ARM_ARCH_6Z__)\ |
| || ((defined(__ARM_ARCH_6K__) || defined(__ARM_ARCH_6ZK__)) && defined(__thumb__)) || defined(__ARM_ARCH_7M__)) |
| #define EXPECT_LLONG_LOCK_FREE 2 |
| #else |
| #define EXPECT_LLONG_LOCK_FREE 0 |
| #endif |
| #define EXPECT_INT128_LOCK_FREE 0 |
| #define EXPECT_POINTER_LOCK_FREE 2 |
| #define EXPECT_BOOL_LOCK_FREE 2 |
| |
| #elif defined(__linux__) && defined(__arm__) |
| |
| #define EXPECT_CHAR_LOCK_FREE 2 |
| #define EXPECT_SHORT_LOCK_FREE 2 |
| #define EXPECT_INT_LOCK_FREE 2 |
| #define EXPECT_LONG_LOCK_FREE 2 |
| #define EXPECT_LLONG_LOCK_FREE 0 |
| #define EXPECT_INT128_LOCK_FREE 0 |
| #define EXPECT_POINTER_LOCK_FREE 2 |
| #define EXPECT_BOOL_LOCK_FREE 2 |
| |
| #elif (defined(__GNUC__) || defined(__SUNPRO_CC)) && (defined(__sparcv8plus) || defined(__sparc_v9__)) |
| |
| #define EXPECT_CHAR_LOCK_FREE 2 |
| #define EXPECT_SHORT_LOCK_FREE 2 |
| #define EXPECT_INT_LOCK_FREE 2 |
| #define EXPECT_LONG_LOCK_FREE 2 |
| #define EXPECT_LLONG_LOCK_FREE 2 |
| #define EXPECT_INT128_LOCK_FREE 0 |
| #define EXPECT_POINTER_LOCK_FREE 2 |
| #define EXPECT_BOOL_LOCK_FREE 2 |
| |
| #elif defined(BOOST_USE_WINDOWS_H) || defined(_WIN32_CE) || defined(BOOST_MSVC) || defined(BOOST_INTEL_WIN) || defined(WIN32) || defined(_WIN32) || defined(__WIN32__) || defined(__CYGWIN__) |
| |
| #define EXPECT_CHAR_LOCK_FREE 2 |
| #define EXPECT_SHORT_LOCK_FREE 2 |
| #define EXPECT_INT_LOCK_FREE 2 |
| #define EXPECT_LONG_LOCK_FREE 2 |
| #if defined(_WIN64) || defined(BOOST_ATOMIC_DETAIL_X86_HAS_CMPXCHG8B) || defined(_M_AMD64) || defined(_M_IA64) || (_MSC_VER >= 1700 && (defined(_M_ARM) || defined(_M_ARM64))) |
| #define EXPECT_LLONG_LOCK_FREE 2 |
| #else |
| #define EXPECT_LLONG_LOCK_FREE 0 |
| #endif |
| #define EXPECT_INT128_LOCK_FREE 0 |
| #define EXPECT_POINTER_LOCK_FREE 2 |
| #define EXPECT_BOOL_LOCK_FREE 2 |
| |
| #else |
| |
| #define EXPECT_CHAR_LOCK_FREE 0 |
| #define EXPECT_SHORT_LOCK_FREE 0 |
| #define EXPECT_INT_LOCK_FREE 0 |
| #define EXPECT_LONG_LOCK_FREE 0 |
| #define EXPECT_LLONG_LOCK_FREE 0 |
| #define EXPECT_INT128_LOCK_FREE 0 |
| #define EXPECT_POINTER_LOCK_FREE 0 |
| #define EXPECT_BOOL_LOCK_FREE 0 |
| |
| #endif |
| |
| int main(int, char *[]) |
| { |
| verify_lock_free<char>("char", BOOST_ATOMIC_CHAR_LOCK_FREE, EXPECT_CHAR_LOCK_FREE); |
| verify_lock_free<short>("short", BOOST_ATOMIC_SHORT_LOCK_FREE, EXPECT_SHORT_LOCK_FREE); |
| verify_lock_free<int>("int", BOOST_ATOMIC_INT_LOCK_FREE, EXPECT_INT_LOCK_FREE); |
| verify_lock_free<long>("long", BOOST_ATOMIC_LONG_LOCK_FREE, EXPECT_LONG_LOCK_FREE); |
| #ifdef BOOST_HAS_LONG_LONG |
| verify_lock_free<long long>("long long", BOOST_ATOMIC_LLONG_LOCK_FREE, EXPECT_LLONG_LOCK_FREE); |
| #endif |
| #ifdef BOOST_HAS_INT128 |
| verify_lock_free<boost::int128_type>("int128", BOOST_ATOMIC_INT128_LOCK_FREE, EXPECT_INT128_LOCK_FREE); |
| #endif |
| verify_lock_free<void *>("void *", BOOST_ATOMIC_POINTER_LOCK_FREE, EXPECT_SHORT_LOCK_FREE); |
| verify_lock_free<bool>("bool", BOOST_ATOMIC_BOOL_LOCK_FREE, EXPECT_BOOL_LOCK_FREE); |
| |
| #ifndef BOOST_ATOMIC_NO_FLOATING_POINT |
| |
| verify_lock_free<float>("float", BOOST_ATOMIC_FLOAT_LOCK_FREE, |
| sizeof(float) == 1 ? EXPECT_CHAR_LOCK_FREE : (sizeof(float) == 2 ? EXPECT_SHORT_LOCK_FREE : |
| (sizeof(float) <= 4 ? EXPECT_INT_LOCK_FREE : (sizeof(float) <= 8 ? EXPECT_LLONG_LOCK_FREE : (sizeof(float) <= 16 ? EXPECT_INT128_LOCK_FREE : 0))))); |
| |
| verify_lock_free<double>("double", BOOST_ATOMIC_DOUBLE_LOCK_FREE, |
| sizeof(double) == 1 ? EXPECT_CHAR_LOCK_FREE : (sizeof(double) == 2 ? EXPECT_SHORT_LOCK_FREE : |
| (sizeof(double) <= 4 ? EXPECT_INT_LOCK_FREE : (sizeof(double) <= 8 ? EXPECT_LLONG_LOCK_FREE : (sizeof(double) <= 16 ? EXPECT_INT128_LOCK_FREE : 0))))); |
| |
| verify_lock_free<long double>("long double", BOOST_ATOMIC_LONG_DOUBLE_LOCK_FREE, |
| sizeof(long double) == 1 ? EXPECT_CHAR_LOCK_FREE : (sizeof(long double) == 2 ? EXPECT_SHORT_LOCK_FREE : |
| (sizeof(long double) <= 4 ? EXPECT_INT_LOCK_FREE : (sizeof(long double) <= 8 ? EXPECT_LLONG_LOCK_FREE : (sizeof(long double) <= 16 ? EXPECT_INT128_LOCK_FREE : 0))))); |
| |
| #if defined(BOOST_HAS_INT128) && defined(BOOST_HAS_FLOAT128) |
| verify_lock_free<boost::float128_type>("float128", BOOST_ATOMIC_INT128_LOCK_FREE, EXPECT_INT128_LOCK_FREE); |
| #endif |
| |
| #endif // BOOST_ATOMIC_NO_FLOATING_POINT |
| |
| bool any_lock_free = |
| BOOST_ATOMIC_CHAR_LOCK_FREE > 0 || |
| BOOST_ATOMIC_SHORT_LOCK_FREE > 0 || |
| BOOST_ATOMIC_INT_LOCK_FREE > 0 || |
| BOOST_ATOMIC_LONG_LOCK_FREE > 0 || |
| BOOST_ATOMIC_LLONG_LOCK_FREE > 0 || |
| BOOST_ATOMIC_BOOL_LOCK_FREE > 0; |
| |
| BOOST_TEST(!any_lock_free || BOOST_ATOMIC_THREAD_FENCE > 0); |
| |
| return boost::report_errors(); |
| } |