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std::experimental::pmr::set_default_resource(3) C++ Standard Libary std::experimental::pmr::set_default_resource(3)


std::experimental::pmr::set_default_resource - std::experimental::pmr::set_default_resource


Defined in header <experimental/memory_resource>
memory_resource* set_default_resource(memory_resource* r) (library fundamentals
noexcept; TS)

If r is not null, sets the default memory resource pointer to r; otherwise, sets the
default memory resource pointer to new_delete_resource().

The default memory resource pointer is used by certain facilities when an explicit
memory resource is not supplied. The initial default memory resource pointer is the
return value of new_delete_resource().

This function is thread-safe. Every call to set_default_resource synchronizes with
(see std::memory_order) the subsequent set_default_resource and get_default_resource

Return value

Returns the previous value of the default memory resource pointer.

See also

get_default_resource gets the default memory_resource
returns a static program-wide memory_resource that uses the
new_delete_resource global operator new and operator delete to allocate and
deallocate memory