[#std-shared_lock-0b-2constructor-04]
= xref:std.adoc[std]::xref:std/shared_lock-0b.adoc[shared_lock<folly::SharedMutexImpl<ReaderPriority, Tag_, Atom, Policy>>]::shared_lock
:relfileprefix: ../../
:mrdocs:

Constructs a lock that owns no mutex.

== Synopsis

Declared in `<folly/SharedMutex.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
shared_lock() noexcept = default;
----


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