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std::atomic_ref<T>:: fetch_max

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atomic_ref::fetch_max
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Constants
Provided only when T is an integral type other than cv bool or a pointer-to-object type
value_type fetch_max ( value_type arg,

std:: memory_order order =

std:: memory_order_seq_cst ) const noexcept ;
(since C++26)

Atomically replaces the current value of the referenced object with the result of std::max of the value and arg . That is, it performs atomic maximum operation. The operation is a read-modify-write operation. Memory is affected according to the value of order .

If T is a pointer type and the pointers point to different complete objects (or subobjects thereof), pointer comparison does not establish a strict weak ordering .

This overload participates in overload resolution only if std:: is_const_v < T > is false .

Contents

Parameters

arg - the other argument of std::max
order - memory order constraints to enforce

Return value

The value immediately preceding the effects of this function in the modification order of * this .

Notes

Feature-test macro Value Std Feature
__cpp_lib_atomic_min_max 202403L (C++26) Atomic minimum/maximum

Example

This section is incomplete
Reason: no example