[#LockedPool-2constructor-07]
= xref:LockedPool.adoc[LockedPool]::LockedPool
:relfileprefix: ../
:mrdocs:

Create a new LockedPool. This takes ownership of the MemoryPageLocker, you can only instantiate this with LockedPool(std::move(...)).

== Synopsis

Declared in `<support/lockedpool.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
explicit
LockedPool(
    std::unique_ptr<LockedPageAllocator> allocator,
    xref:LockedPool/LockingFailed_Callback.adoc[LockingFailed_Callback] lf_cb_in = nullptr);
----

== Description

The second argument is an optional callback when locking a newly allocated arena failed. If this callback is provided and returns false, the allocation fails (hard fail), if it returns true the allocation proceeds, but it could warn.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *allocator*
| The page allocator whose ownership the pool takes.
| *lf_cb_in*
| Optional callback invoked when locking a new arena fails.
|===


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