It sounds like you want the functions defined in . This function is very helpful when tuning stack sizes: cyg_test_dump_thread_stack_stats( char *comment, Cyg_Thread *p ); Run your thread at it's highest possible stack usage, use this function as a test diagnostic, and trim down near that. And be careful... If you cut back the stack too far, you'll likely overflow your stack and get very unpredictable bugs which are painful to track down. -Dan * * Dan Bolstad * Software Engineer, Interactive Objects * danb@iobjects.com 425.289.0327 * -----Original Message----- From: Rafael Rodríguez Velilla [ mailto:rrv@tid.es ] Sent: Thursday, August 30, 2001 1:53 AM To: ecos Subject: Re: [ECOS] Adjusting stack sizes "Simpkins, Andy" wrote: > I assume that you mean whilst the thread is active? I am not sure that that > can be done (simply)... > > However if you mean before you create the thread (which I am sure you don't) > then the stack size is specified as part of cyg_thread_create I don't want to create a thread that adjusts its stack size at run time. I want to create applications with threads that don't use too much thread stack space, so I'd want to know how do the others calculate the space required by a thread. I have seen a member "stack_limit" and two methods "increment_stack_limit" and "get_stack_limit" in the Cyg_Thread class that I think that are supposed to help the developers adjust their stacks doing some kind of run-time simulation... but I don't know how to use that. -- Rafael Rodríguez Velilla rrv@tid.es Telefónica I+D http://www.tid.es Telf: +34 - 91 337 4270