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ICU-20729 Remove obsolete U_HAVE_STD_ATOMICS and similar @internal macros.

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Andy Heninger 2019-07-23 14:54:57 -07:00
parent 16f2ba2180
commit f793ad55e9
1 changed files with 0 additions and 70 deletions
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70
icu4c/source/common/putilimp.h
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@ -178,76 +178,6 @@ typedef size_t uintptr_t;
/** @} */
/*===========================================================================*/
/** @{ GCC built in functions for atomic memory operations */
/*===========================================================================*/
/**
* \def U_HAVE_GCC_ATOMICS
* @internal
*/
#ifdef U_HAVE_GCC_ATOMICS
/* Use the predefined value. */
#elif U_PLATFORM == U_PF_MINGW
#define U_HAVE_GCC_ATOMICS 0
#elif U_GCC_MAJOR_MINOR >= 404 || defined(__clang__)
/* TODO: Intel icc and IBM xlc on AIX also support gcc atomics. (Intel originated them.)
* Add them for these compilers.
* Note: Clang sets __GNUC__ defines for version 4.2, so misses the 4.4 test here.
*/
# define U_HAVE_GCC_ATOMICS 1
#else
# define U_HAVE_GCC_ATOMICS 0
#endif
/** @} */
/**
* \def U_HAVE_STD_ATOMICS
* Defines whether to use the C++11 std::atomic functions.
* If false, ICU will fall back to compiler or platform specific alternatives.
* Note: support for these fall back options for atomics will be removed in a future version
* of ICU, and the use of C++ 11 atomics will be required.
* @internal
*/
#ifdef U_HAVE_STD_ATOMICS
/* Use the predefined value. */
#else
# define U_HAVE_STD_ATOMICS 1
#endif
/**
* \def U_HAVE_CLANG_ATOMICS
* Defines whether Clang c11 style built-in atomics are available.
* These are used in preference to gcc atomics when both are available.
*/
#ifdef U_HAVE_CLANG_ATOMICS
/* Use the predefined value. */
#elif __has_builtin(__c11_atomic_load) && \
__has_builtin(__c11_atomic_store) && \
__has_builtin(__c11_atomic_fetch_add) && \
__has_builtin(__c11_atomic_fetch_sub)
# define U_HAVE_CLANG_ATOMICS 1
#else
# define U_HAVE_CLANG_ATOMICS 0
#endif
/**
* \def U_HAVE_STD_MUTEX
* Defines whether to use the C++11 std::mutex functions.
* If false, ICU will fall back to compiler or platform specific alternatives.
* std::mutex is preferred, and used by default unless this setting is overridden.
* Note: support for other options for mutexes will be removed in a future version
* of ICU, and the use of std::mutex will be required.
* @internal
*/
#ifdef U_HAVE_STD_MUTEX
/* Use the predefined value. */
#else
# define U_HAVE_STD_MUTEX 1
#endif
/*===========================================================================*/
/** @{ Programs used by ICU code */
/*===========================================================================*/