[#UniqueLock-2constructor-07] = xref:UniqueLock.adoc[UniqueLock]::UniqueLock :relfileprefix: ../ :mrdocs: Construct an empty lock that owns no mutex (needed for reverse_lock). == Synopsis Declared in `<sync.h>` [source,cpp,subs="verbatim,replacements,macros,-callouts"] ---- UniqueLock() = default; ---- [.small]#Created with https://www.mrdocs.com[MrDocs]#