Reclaiming resident buffers when a reclaim threshold has been exceeded by swapping the oldest in use buffer and a new buffer, and referencing the new buffer via an updated set of read and write pointers

Abstract

Systems methods and computer products for reclaiming resident buffers on demand. Exemplary embodiments include systems and methods for reclaiming resident buffers, including allocating a buffer, determining that the buffer allocation pushes the buffer pool below a reclaim threshold, marking an oldest in-use buffer to be reclaimed, determining that all messages referencing the buffer have been queued, allocating a new buffer and performing a swap of the oldest in-use buffer and the new buffer, performing a free message block operation and updating a message block by updating a set of read and write pointers to point to the new buffer.