[#bsl-weak_ptr-0d-use_count]
= xref:bsl.adoc[bsl]::xref:bsl/weak_ptr-0d.adoc[weak_ptr]::use_count
:relfileprefix: ../../
:mrdocs:

Return a "snapshot" of the current number of shared pointers that share ownership of the object referred to by this weak pointer, or 0 if this weak pointer is in the empty state. Note that any result other than 0 may be unreliable in a multi‐threaded program, where another pointer sharing ownership in a different thread may be copied or destroyed, or another weak pointer may be locked in the case that 1 is returned (that would otherwise indicate unique ownership).

== Synopsis

Declared in `<bslstl_sharedptr.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
long
use_count() const noexcept;
----


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