StackThreads/MP: version 0.77 User's Guide

3.6.3: Invoke Stack Management

        void ST_FREE_STACK()

longer used and reset the stack pointer of the calling worker to an appropriate point (the point above which there are no frames still used). This is implicitly called when you perform ST_POLLING(), so this should be usually of no interest for you. Use this API only when you understand how StackThreads/MP works and when you want to free stack frames without causing thread migration.