[libcxx-commits] [libcxx] [libc++] atomic timed wait (PR #172214)

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``````````bash
git-clang-format --diff origin/main HEAD --extensions ,h,cpp -- libcxx/include/__atomic/atomic_sync_timed.h libcxx/include/__atomic/atomic_waitable_traits.h libcxx/include/__atomic/atomic.h libcxx/include/__atomic/atomic_flag.h libcxx/include/__atomic/atomic_ref.h libcxx/include/__atomic/atomic_sync.h libcxx/include/__thread/poll_with_backoff.h libcxx/include/__thread/timed_backoff_policy.h libcxx/include/atomic libcxx/include/semaphore libcxx/src/atomic.cpp --diff_from_common_commit
``````````

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``````````diff
diff --git a/libcxx/include/__atomic/atomic_sync_timed.h b/libcxx/include/__atomic/atomic_sync_timed.h
index ca7502b64..a13672ed3 100644
--- a/libcxx/include/__atomic/atomic_sync_timed.h
+++ b/libcxx/include/__atomic/atomic_sync_timed.h
@@ -38,7 +38,7 @@ _LIBCPP_BEGIN_NAMESPACE_STD
 #  if _LIBCPP_HAS_THREADS && _LIBCPP_AVAILABILITY_HAS_NEW_SYNC
 
 _LIBCPP_AVAILABILITY_NEW_SYNC
-    _LIBCPP_EXPORTED_FROM_ABI __cxx_contention_t __atomic_monitor_global(void const* __address) _NOEXCEPT;
+_LIBCPP_EXPORTED_FROM_ABI __cxx_contention_t __atomic_monitor_global(void const* __address) _NOEXCEPT;
 
 // wait on the global contention state to be changed from the given value for the address
 _LIBCPP_AVAILABILITY_NEW_SYNC _LIBCPP_EXPORTED_FROM_ABI void __atomic_wait_global_table_with_timeout(
diff --git a/libcxx/include/semaphore b/libcxx/include/semaphore
index f93f8243b..aa9fa6fb2 100644
--- a/libcxx/include/semaphore
+++ b/libcxx/include/semaphore
@@ -109,9 +109,8 @@ public:
     if (__rel_time == chrono::duration<_Rep, _Period>::zero())
       return try_acquire();
 
-    return std::__atomic_wait_unless_with_timeout(__a_, memory_order_relaxed, [this](ptrdiff_t& __old) {
-      return __try_acquire_impl(__old);
-    }, __rel_time);
+    return std::__atomic_wait_unless_with_timeout(
+        __a_, memory_order_relaxed, [this](ptrdiff_t& __old) { return __try_acquire_impl(__old); }, __rel_time);
   }
   _LIBCPP_HIDE_FROM_ABI bool try_acquire() {
     auto __old = __a_.load(memory_order_relaxed);

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https://github.com/llvm/llvm-project/pull/172214