[#BloombergLP-bdlma-HeapBypassAllocator-2constructor-0e] = xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bdlma.adoc[bdlma]::xref:BloombergLP/bdlma/HeapBypassAllocator.adoc[HeapBypassAllocator]::HeapBypassAllocator :relfileprefix: ../../../ :mrdocs: Create an empty allocator object. Optionally specify `replenishHint` as the minimum number of bytes to allocate at a time when the allocator's memory needs to grow. In a multi‐threaded scenario, the programmer should ensure that `replenishHint` is large enough so that multiple threads will rarely need to replenish at the same time in order to minimize contention. == Synopsis Declared in `<bdlma_heapbypassallocator.h>` [source,cpp,subs="verbatim,replacements,macros,-callouts"] ---- HeapBypassAllocator(); ---- [.small]#Created with https://www.mrdocs.com[MrDocs]#