Strengthen exception specifications for [thread] types#3388
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- `condition_variable`'s default constructor and `native_handle` - `recursive_mutex`'s default constructor - all `adopt_lock_t` constructors Also make some special member functions defaulted.
Both the default constructor and destructor are trivial now, so we need to suppress warnings.
StephanTLavavej
approved these changes
Feb 13, 2023
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Looks good to me. As before, I believe this is ABI-safe because no copy ctors are being defaulted. |
strega-nil-ms
approved these changes
Feb 13, 2023
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I'm mirroring this to the MSVC-internal repo - please notify me if any further changes are pushed. |
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Thanks for making our threads stronger! 🧵 🦾 😹 |
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Fixes #3324. Towards #363.
These functions are made
noexcept._Mutex_base::try_lock(i.e.mutex::try_lock) (analysis:<mutex>: Is_Mutex_base::try_lockactuallynoexcept? #3324 (comment))notify_all_at_thread_exitcondition_variable's default constructor,native_handle, andwaitrecursive_mutex's default constructoradopt_lock_tconstructorsAlso make some special member functions defaulted.
thread::id's default constructorunique_lock's default constructorscoped_lock<>'s default constructor and destructor, also strengthening exception specificationtimed_mutex,recursive_timed_mutex, andshared_timed_mutex's default constructors, keeping exception specification strengthened (some comments were missing before, although IMO we don't need to add back now)Comment changes:
timed_mutex::try_lockisn't markednoexceptin working draft ([thread.timedmutex.class]). So this PR adds the missing/* strengthened */comment.