[libcxx-commits] [libcxx] [libc++] Allows any types of size 4 and 8 to use native platform ulock_wait (PR #161086)

Louis Dionne via libcxx-commits libcxx-commits at lists.llvm.org
Fri Oct 31 10:59:49 PDT 2025


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@@ -70,42 +77,97 @@ __libcpp_atomic_monitor(__cxx_atomic_contention_t const volatile*) _NOEXCEPT;
 _LIBCPP_EXPORTED_FROM_ABI void
 __libcpp_atomic_wait(__cxx_atomic_contention_t const volatile*, __cxx_contention_t) _NOEXCEPT;
 
+// new dylib interface
+_LIBCPP_AVAILABILITY_NEW_SYNC _LIBCPP_EXPORTED_FROM_ABI __cxx_contention_t
+__libcpp_atomic_monitor_global(void const volatile* __address) _NOEXCEPT;
+
+_LIBCPP_AVAILABILITY_NEW_SYNC _LIBCPP_EXPORTED_FROM_ABI void
+__libcpp_atomic_wait_global_table(void const volatile* __address, __cxx_contention_t __monitor_value) _NOEXCEPT;
+
+_LIBCPP_AVAILABILITY_NEW_SYNC _LIBCPP_EXPORTED_FROM_ABI void
+__libcpp_atomic_notify_one_global_table(void const volatile*) _NOEXCEPT;
----------------
ldionne wrote:

Why are all of these functions prefixed with `__libcpp`? I would drop it: it's not a convention we actually have, we normally use `__libcpp` only to disambiguate when a compiler-provided (or system provided) function has the same name.

https://github.com/llvm/llvm-project/pull/161086


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