32 Thread support library [thread]

32.5 Mutual exclusion [thread.mutex]

32.5.4 Locks [thread.lock]

32.5.4.3 Class template unique_­lock [thread.lock.unique]

32.5.4.3.4 Observers [thread.lock.unique.obs]

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bool owns_lock() const noexcept;
1
#
Returns: owns.
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explicit operator bool() const noexcept;
2
#
Returns: owns.
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mutex_type *mutex() const noexcept;
3
#
Returns: pm.