[#BloombergLP-bslmt-ThreadUtilImpl-04-selfKernelIdAsUint64]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bslmt.adoc[bslmt]::xref:BloombergLP/bslmt/ThreadUtilImpl-04.adoc[ThreadUtilImpl<Platform::PosixThreads>]::selfKernelIdAsUint64
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:mrdocs:

Return an integral identifier of the current thread used by the operating system. Note that kernel thread ID is different from the user‐space thread ID returned by `selfIdAsUint64()`. Note that this value is only valid until the thread terminates and may be reused thereafter.

== Synopsis

Declared in `<bslmt_threadutilimpl_pthread.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
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static
xref:BloombergLP/bsls/Types/Uint64.adoc[bsls::Types::Uint64]
selfKernelIdAsUint64();
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