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Diffstat (limited to 'libstdc++-v3/include/std/atomic')
-rw-r--r--libstdc++-v3/include/std/atomic69
1 files changed, 36 insertions, 33 deletions
diff --git a/libstdc++-v3/include/std/atomic b/libstdc++-v3/include/std/atomic
index 111df2a..da99169 100644
--- a/libstdc++-v3/include/std/atomic
+++ b/libstdc++-v3/include/std/atomic
@@ -38,6 +38,12 @@
# include <bits/c++0x_warning.h>
#else
+#define __glibcxx_want_atomic_is_always_lock_free
+#define __glibcxx_want_atomic_float
+#define __glibcxx_want_atomic_ref
+#define __glibcxx_want_atomic_lock_free_type_aliases
+#include <bits/version.h>
+
#include <bits/atomic_base.h>
namespace std _GLIBCXX_VISIBILITY(default)
@@ -49,10 +55,6 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
* @{
*/
-#if __cplusplus >= 201703L
-# define __cpp_lib_atomic_is_always_lock_free 201603L
-#endif
-
template<typename _Tp>
struct atomic;
@@ -95,7 +97,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
bool
is_lock_free() const volatile noexcept { return _M_base.is_lock_free(); }
-#if __cplusplus >= 201703L
+#ifdef __cpp_lib_atomic_is_always_lock_free // C++ >= 17
static constexpr bool is_always_lock_free = ATOMIC_BOOL_LOCK_FREE == 2;
#endif
@@ -268,7 +270,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
reinterpret_cast<void *>(-_S_alignment));
}
-#if __cplusplus >= 201703L
+#ifdef __cpp_lib_atomic_is_always_lock_free // C++ >= 17
static constexpr bool is_always_lock_free
= __atomic_always_lock_free(sizeof(_M_i), 0);
#endif
@@ -557,7 +559,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
is_lock_free() const volatile noexcept
{ return _M_b.is_lock_free(); }
-#if __cplusplus >= 201703L
+#ifdef __cpp_lib_atomic_is_always_lock_free // C++ >= 17
static constexpr bool is_always_lock_free
= ATOMIC_POINTER_LOCK_FREE == 2;
#endif
@@ -720,7 +722,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
using __base_type::operator __integral_type;
using __base_type::operator=;
-#if __cplusplus >= 201703L
+#ifdef __cpp_lib_atomic_is_always_lock_free // C++ >= 17
static constexpr bool is_always_lock_free = ATOMIC_CHAR_LOCK_FREE == 2;
#endif
};
@@ -743,7 +745,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
using __base_type::operator __integral_type;
using __base_type::operator=;
-#if __cplusplus >= 201703L
+#ifdef __cpp_lib_atomic_is_always_lock_free // C++ >= 17
static constexpr bool is_always_lock_free = ATOMIC_CHAR_LOCK_FREE == 2;
#endif
};
@@ -766,7 +768,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
using __base_type::operator __integral_type;
using __base_type::operator=;
-#if __cplusplus >= 201703L
+#ifdef __cpp_lib_atomic_is_always_lock_free // C++ >= 17
static constexpr bool is_always_lock_free = ATOMIC_CHAR_LOCK_FREE == 2;
#endif
};
@@ -789,7 +791,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
using __base_type::operator __integral_type;
using __base_type::operator=;
-#if __cplusplus >= 201703L
+#ifdef __cpp_lib_atomic_is_always_lock_free // C++ >= 17
static constexpr bool is_always_lock_free = ATOMIC_SHORT_LOCK_FREE == 2;
#endif
};
@@ -812,7 +814,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
using __base_type::operator __integral_type;
using __base_type::operator=;
-#if __cplusplus >= 201703L
+#ifdef __cpp_lib_atomic_is_always_lock_free // C++ >= 17
static constexpr bool is_always_lock_free = ATOMIC_SHORT_LOCK_FREE == 2;
#endif
};
@@ -835,7 +837,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
using __base_type::operator __integral_type;
using __base_type::operator=;
-#if __cplusplus >= 201703L
+#ifdef __cpp_lib_atomic_is_always_lock_free // C++ >= 17
static constexpr bool is_always_lock_free = ATOMIC_INT_LOCK_FREE == 2;
#endif
};
@@ -858,7 +860,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
using __base_type::operator __integral_type;
using __base_type::operator=;
-#if __cplusplus >= 201703L
+#ifdef __cpp_lib_atomic_is_always_lock_free // C++ >= 17
static constexpr bool is_always_lock_free = ATOMIC_INT_LOCK_FREE == 2;
#endif
};
@@ -881,7 +883,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
using __base_type::operator __integral_type;
using __base_type::operator=;
-#if __cplusplus >= 201703L
+#ifdef __cpp_lib_atomic_is_always_lock_free // C++ >= 17
static constexpr bool is_always_lock_free = ATOMIC_LONG_LOCK_FREE == 2;
#endif
};
@@ -904,7 +906,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
using __base_type::operator __integral_type;
using __base_type::operator=;
-#if __cplusplus >= 201703L
+#ifdef __cpp_lib_atomic_is_always_lock_free // C++ >= 17
static constexpr bool is_always_lock_free = ATOMIC_LONG_LOCK_FREE == 2;
#endif
};
@@ -927,7 +929,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
using __base_type::operator __integral_type;
using __base_type::operator=;
-#if __cplusplus >= 201703L
+#ifdef __cpp_lib_atomic_is_always_lock_free // C++ >= 17
static constexpr bool is_always_lock_free = ATOMIC_LLONG_LOCK_FREE == 2;
#endif
};
@@ -950,7 +952,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
using __base_type::operator __integral_type;
using __base_type::operator=;
-#if __cplusplus >= 201703L
+#ifdef __cpp_lib_atomic_is_always_lock_free // C++ >= 17
static constexpr bool is_always_lock_free = ATOMIC_LLONG_LOCK_FREE == 2;
#endif
};
@@ -973,7 +975,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
using __base_type::operator __integral_type;
using __base_type::operator=;
-#if __cplusplus >= 201703L
+#ifdef __cpp_lib_atomic_is_always_lock_free // C++ >= 17
static constexpr bool is_always_lock_free = ATOMIC_WCHAR_T_LOCK_FREE == 2;
#endif
};
@@ -997,7 +999,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
using __base_type::operator __integral_type;
using __base_type::operator=;
-#if __cplusplus > 201402L
+#ifdef __cpp_lib_atomic_is_always_lock_free // C++ >= 17
static constexpr bool is_always_lock_free
= ATOMIC_CHAR8_T_LOCK_FREE == 2;
#endif
@@ -1022,7 +1024,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
using __base_type::operator __integral_type;
using __base_type::operator=;
-#if __cplusplus >= 201703L
+#ifdef __cpp_lib_atomic_is_always_lock_free // C++ >= 17
static constexpr bool is_always_lock_free
= ATOMIC_CHAR16_T_LOCK_FREE == 2;
#endif
@@ -1046,7 +1048,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
using __base_type::operator __integral_type;
using __base_type::operator=;
-#if __cplusplus >= 201703L
+#ifdef __cpp_lib_atomic_is_always_lock_free // C++ >= 17
static constexpr bool is_always_lock_free
= ATOMIC_CHAR32_T_LOCK_FREE == 2;
#endif
@@ -1614,8 +1616,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
__atomic_val_t<_ITp> __i) noexcept
{ return atomic_fetch_xor_explicit(__a, __i, memory_order_seq_cst); }
-#if __cplusplus > 201703L
-#define __cpp_lib_atomic_float 201711L
+#ifdef __cpp_lib_atomic_float
template<>
struct atomic<float> : __atomic_float<float>
{
@@ -1745,9 +1746,9 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
using __atomic_float<__gnu_cxx::__bfloat16_t>::operator=;
};
#endif
+#endif // __cpp_lib_atomic_float
-#define __cpp_lib_atomic_ref 201806L
-
+#ifdef __cpp_lib_atomic_ref
/// Class template to provide atomic operations on a non-atomic variable.
template<typename _Tp>
struct atomic_ref : __atomic_ref<_Tp>
@@ -1762,26 +1763,28 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
using __atomic_ref<_Tp>::operator=;
};
+#endif // __cpp_lib_atomic_ref
-#define __cpp_lib_atomic_lock_free_type_aliases 201907L
-#ifdef _GLIBCXX_HAVE_PLATFORM_WAIT
+#ifdef __cpp_lib_atomic_lock_free_type_aliases
+# ifdef _GLIBCXX_HAVE_PLATFORM_WAIT
using atomic_signed_lock_free
= atomic<make_signed_t<__detail::__platform_wait_t>>;
using atomic_unsigned_lock_free
= atomic<make_unsigned_t<__detail::__platform_wait_t>>;
-#elif ATOMIC_INT_LOCK_FREE || !(ATOMIC_LONG_LOCK_FREE || ATOMIC_CHAR_LOCK_FREE)
+# elif ATOMIC_INT_LOCK_FREE || !(ATOMIC_LONG_LOCK_FREE || ATOMIC_CHAR_LOCK_FREE)
using atomic_signed_lock_free = atomic<signed int>;
using atomic_unsigned_lock_free = atomic<unsigned int>;
-#elif ATOMIC_LONG_LOCK_FREE
+# elif ATOMIC_LONG_LOCK_FREE
using atomic_signed_lock_free = atomic<signed long>;
using atomic_unsigned_lock_free = atomic<unsigned long>;
-#elif ATOMIC_CHAR_LOCK_FREE
+# elif ATOMIC_CHAR_LOCK_FREE
using atomic_signed_lock_free = atomic<signed char>;
using atomic_unsigned_lock_free = atomic<unsigned char>;
+# else
+# error "libstdc++ bug: no lock-free atomics but they were emitted in <version>"
+# endif
#endif
-#endif // C++2a
-
/// @} group atomics
_GLIBCXX_END_NAMESPACE_VERSION
generated by cgit v1.1 at 2025-04-09 02:36:18 +0000