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Implement the ATOMIC_*_LOCK_FREE macros.

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git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@173084 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Howard Hinnant 2013-01-21 20:39:41 +00:00
parent 78f0de22db
commit 7b9d6a8d40
1 changed files with 12 additions and 8 deletions
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20
include/atomic
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@ -33,6 +33,7 @@ template <class T> T kill_dependency(T y) noexcept;
// lock-free property
#define ATOMIC_BOOL_LOCK_FREE unspecified
#define ATOMIC_CHAR_LOCK_FREE unspecified
#define ATOMIC_CHAR16_T_LOCK_FREE unspecified
#define ATOMIC_CHAR32_T_LOCK_FREE unspecified
@ -41,6 +42,7 @@ template <class T> T kill_dependency(T y) noexcept;
#define ATOMIC_INT_LOCK_FREE unspecified
#define ATOMIC_LONG_LOCK_FREE unspecified
#define ATOMIC_LLONG_LOCK_FREE unspecified
#define ATOMIC_POINTER_LOCK_FREE unspecified
// flag type and operations
@ -1501,14 +1503,16 @@ typedef atomic<uintmax_t> atomic_uintmax_t;
// lock-free property
#define ATOMIC_CHAR_LOCK_FREE 0
#define ATOMIC_CHAR16_T_LOCK_FREE 0
#define ATOMIC_CHAR32_T_LOCK_FREE 0
#define ATOMIC_WCHAR_T_LOCK_FREE 0
#define ATOMIC_SHORT_LOCK_FREE 0
#define ATOMIC_INT_LOCK_FREE 0
#define ATOMIC_LONG_LOCK_FREE 0
#define ATOMIC_LLONG_LOCK_FREE 0
#define ATOMIC_BOOL_LOCK_FREE __GCC_ATOMIC_BOOL_LOCK_FREE
#define ATOMIC_CHAR_LOCK_FREE __GCC_ATOMIC_CHAR_LOCK_FREE
#define ATOMIC_CHAR16_T_LOCK_FREE __GCC_ATOMIC_CHAR16_T_LOCK_FREE
#define ATOMIC_CHAR32_T_LOCK_FREE __GCC_ATOMIC_CHAR32_T_LOCK_FREE
#define ATOMIC_WCHAR_T_LOCK_FREE __GCC_ATOMIC_WCHAR_T_LOCK_FREE
#define ATOMIC_SHORT_LOCK_FREE __GCC_ATOMIC_SHORT_LOCK_FREE
#define ATOMIC_INT_LOCK_FREE __GCC_ATOMIC_INT_LOCK_FREE
#define ATOMIC_LONG_LOCK_FREE __GCC_ATOMIC_LONG_LOCK_FREE
#define ATOMIC_LLONG_LOCK_FREE __GCC_ATOMIC_LLONG_LOCK_FREE
#define ATOMIC_POINTER_LOCK_FREE __GCC_ATOMIC_POINTER_LOCK_FREE
#endif // !__has_feature(cxx_atomic)