[#BloombergLP-bslmt-ThreadUtil-createWithAllocator-0c]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bslmt.adoc[bslmt]::xref:BloombergLP/bslmt/ThreadUtil.adoc[ThreadUtil]::createWithAllocator
:relfileprefix: ../../../
:mrdocs:

Create a new thread of program control whose entry point will be the specified `function`, and which will be passed the specified `userData` as its sole argument, and load into the specified `handle` an identifier that may be used to refer to this thread in calls to other `ThreadUtil` methods. Optionally specify `attributes` describing the properties for the new thread. If `attributes` is not supplied, a default `ThreadAttributes` object is used. Use the specified `allocator` to supply memory. Return 0 on success, and a non‐zero value otherwise. `bslmt::Configuration` is used to determine the created thread's default stack‐size if either `attributes` is not supplied or if `attributes.stackSize()` has the unset value. The behavior is undefined unless `attributes`, if specified, has a `stackSize` that is either greater than 0 or `e_UNSET_STACK_SIZE`. Note that unless the created thread is explicitly "detached" (by invoking the `detach` class method with `handle`) or the `k_CREATE_DETACHED` attribute is specified, a call to `join` must be made to reclaim any system resources associated with the newly‐created thread. Also note that users are encouraged to either explicitly provide a stack size attribute, or configure a `bslmt`‐wide default using `bslmt::Configuration`, because the default stack size is surprisingly small on some platforms.

== Synopsis

Declared in `<bslmt_threadutil.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
static
int
createWithAllocator(
    xref:BloombergLP/bslmt/ThreadUtil/Handle.adoc[Handle]* handle,
    xref:BloombergLP/bslmt/ThreadUtil/ThreadFunction.adoc[ThreadFunction] function,
    void* userData,
    xref:BloombergLP/bslma/Allocator.adoc[bslma::Allocator]* allocator);
----


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