std::atomic_flag_test, std::atomic_flag_test_explicit
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Defined in header
<atomic> |
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| (1) | (since C++20) | |
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bool atomic_flag_test( const volatile std::atomic_flag* object ) noexcept;
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bool atomic_flag_test( const std::atomic_flag* object ) noexcept;
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| (2) | (since C++20) | |
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bool atomic_flag_test_explicit( const volatile std::atomic_flag* object,
std::memory_order order ) noexcept; |
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bool atomic_flag_test_explicit( const std::atomic_flag* object,
std::memory_order order ) noexcept; |
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Atomically reads the value of the *object and returns the value.
1) Equivalent to object->test(std::memory_order_seq_cst).
2) Equivalent to object->test(order).
Parameters
| object | - | pointer to the atomic_flag object to read |
| order | - | the memory synchronization ordering for this operation: must not be std::memory_order::release or std::memory_order::acq_rel |
Return value
The value atomically read.
Example
| This section is incomplete Reason: no example |
See also
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(C++20)
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atomically returns the value of the flag (public member function of std::atomic_flag) |