std::scoped...:scoped_lock(3) C++ Standard Libary std::scoped...:scoped_lock(3) NAME std::scoped_lock::scoped_lock - std::scoped_lock::scoped_lock Synopsis explicit scoped_lock( MutexTypes&... m ); (1) (since C++17) scoped_lock( std::adopt_lock_t, MutexTypes&... m ); (2) (since C++17) scoped_lock( const scoped_lock& ) = delete; (3) (since C++17) Acquires ownership of the given mutexes m. 1) If sizeof...(MutexTypes) == 0, does nothing. Otherwise, if sizeof...(MutexTypes) == 1, effectively calls m.lock(). Otherwise, effectively calls std::lock(m...). 2) Acquires ownership of the mutexes m... without attempting to lock any of them. The behavior is undefined unless the current thread holds a non-shared lock (i.e., a lock acquired by lock, try_lock, try_lock_for, or try_lock_until) on each object in m.... 3) Copy constructor is deleted. The behavior is undefined if m is destroyed before the scoped_lock ob- ject is. Parameters m - mutexes to acquire ownership of Exceptions 1) Throws any exceptions thrown by m.lock(). 2) Throws nothing. Defect reports The following behavior-changing defect reports were applied retroac- tively to previously published C++ standards. DR Applied to Behavior as published Cor- rect behavior P0739R0 C++17 adopt_lock_t parameter was last, impeding class moved to first template argument deduction http://cppreference.com 2024.06.10 std::scoped...:scoped_lock(3)
NAME | Synopsis | Parameters | Exceptions
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