[#BloombergLP-bslmt-LockReadGuard-2constructor-01]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bslmt.adoc[bslmt]::xref:BloombergLP/bslmt/LockReadGuard.adoc[LockReadGuard]::LockReadGuard
:relfileprefix: ../../../
:mrdocs:

Constructors

== Synopses

Declared in `<bslmt_readlockguard.h>`

Create a guard that acquires a read lock on `lock`.


[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
explicit
xref:BloombergLP/bslmt/LockReadGuard/2constructor-08.adoc[LockReadGuard](T* lock);
----

[.small]#xref:BloombergLP/bslmt/LockReadGuard/2constructor-08.adoc[_» more..._]#

DEPRECATED: Use `ReadLockGuard` instead.


[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
xref:BloombergLP/bslmt/LockReadGuard/2constructor-06.adoc[LockReadGuard](
    T* lock,
    bool alreadyLockedFlag);
----

[.small]#xref:BloombergLP/bslmt/LockReadGuard/2constructor-06.adoc[_» more..._]#

== Parameters

[cols="1,4"]
|===
| Name| Description
| *lock*
| lock object to acquire for reading; may be null
| *alreadyLockedFlag*
| `true` if `lock` is already locked for reading
|===


[.small]#Created with https://www.mrdocs.com[MrDocs]#