stack_avail or heap_avail

Hi All

I seem to recall seeing a function for determining the remaining (available) size of the stack.  I couldn't find it in the CW docs, or this mailing list's archive.  Does anyone else recall such a function in CW C for the 568300/E (I'm still on 6.1.2)  or Processor Expert?

One co-worker suggested that it might have been called something like "heap_avail", since some docs refer to allocating memory (e.g. malloc) from the stack.

I may be remembering from the rev. 5 56800 tools, or rev 4, or just plain mis-remembering.

Thanks in advance.

Rick Corey
Sr. Software Engineer

Hi All

I seem to recall seeing a function for determining the remaining (available) size of the stack.  I couldn't find it in the CW docs, or this mailing list's archive.  Does anyone else recall such a function in CW C for the 568300/E (I'm still on 6.1.2)  or Processor Expert?

One co-worker suggested that it might have been called something like "heap_avail", since some docs refer to allocating memory (e.g. malloc) from the stack.

I may be remembering from the rev. 5 56800 tools, or rev 4, or just plain mis-remembering.

Thanks in advance.

Rick Corey
Sr. Software Engineer

-----Original Message-----
From: Hardeep Gida [mailto:h...@instantel.com]
Sent: Friday, July 29, 2005 4:13 PM
To: Corey, Rick; m...@yahoogroups.com
Subject: RE: [motoroladsp] stack_avail or heap_avail

Hi Rick,

 

There is bean called "DSP_StackCheck" under SW>>Tools Library in the bean selector window. If you right click and get help on the bean and go to typical usage it says that it is used to get the size of the software stack. Hope this is what you're looking for. Good luck!

 

Hardeep

 

 

 

 

---

From: m...@yahoogroups.com [mailto:m...@yahoogroups.com] On Behalf Of Corey, Rick
Sent: Friday, July 29, 2005 4:03 PM
To: m...@yahoogroups.com
Subject: [motoroladsp] stack_avail or heap_avail

Hi All

I seem to recall seeing a function for determining the remaining (available) size of the stack.  I couldn't find it in the CW docs, or this mailing list's archive.  Does anyone else recall such a function in CW C for the 568300/E (I'm still on 6.1.2)  or Processor Expert?

One co-worker suggested that it might have been called something like "heap_avail", since some docs refer to allocating memory (e.g. malloc) from the stack.

I may be remembering from the rev. 5 56800 tools, or rev 4, or just plain mis-remembering.

Thanks in advance.

Rick Corey
Sr. Software Engineer

-----Original Message-----
From: Corey, Rick [mailto:r...@dpconline.com]
Sent: Friday, July 29, 2005 4:03 PM
To: m...@yahoogroups.com
Subject: [motoroladsp] stack_avail or heap_avail

Hi All

I seem to recall seeing a function for determining the remaining (available) size of the stack.  I couldn't find it in the CW docs, or this mailing list's archive.  Does anyone else recall such a function in CW C for the 568300/E (I'm still on 6.1.2)  or Processor Expert?

One co-worker suggested that it might have been called something like "heap_avail", since some docs refer to allocating memory (e.g. malloc) from the stack.

I may be remembering from the rev. 5 56800 tools, or rev 4, or just plain mis-remembering.

Thanks in advance.

Rick Corey
Sr. Software Engineer

The information contained in this message is confidential and intended only for use of the designated recipient(s) named above. If the reader of this message is not the intended recipient or an agent responsible for delivering it to the intended recipient, you are hereby notified that you have received this message in error, and that any review, dissemination, distribution, copying, or alteration of this message is strictly prohibited. If you have received this communication in error, please notify the originator immediately and remove it from your system.

-----Original Message-----
From: Ebersman, Howard [mailto:H...@microwavedata.com]
Sent: Friday, July 29, 2005 4:36 PM
To: Corey, Rick; m...@yahoogroups.com
Subject: RE: [motoroladsp] stack_avail or heap_avail

Typically, the way to determine the unused stack space needs to be done dynamically, since it is dependent on program logic calling different levels of nesting and interrupt timing.

 

You can fill the top/bottom half with a known fill pattern (manually using your program or using a debugger), and then exercise the product for a long time to hopefully exhaustively test all logic paths. Finally, use the debugger or a memory peek function to see how much of the fill pattern was overwritten. The high water mark is your stack usage.

 

Just be careful not to overwrite any of the stack in use with fill characters. This can be done using a manual (debugger) fill and a reset of the processor to fix the overwritten stack space.

 

Good luck

 

Howard

-----Original Message-----
From: Corey, Rick [mailto:r...@dpconline.com]
Sent: Friday, July 29, 2005 4:03 PM
To: m...@yahoogroups.com
Subject: [motoroladsp] stack_avail or heap_avail

Hi All

I seem to recall seeing a function for determining the remaining (available) size of the stack.  I couldn't find it in the CW docs, or this mailing list's archive.  Does anyone else recall such a function in CW C for the 568300/E (I'm still on 6.1.2)  or Processor Expert?

One co-worker suggested that it might have been called something like "heap_avail", since some docs refer to allocating memory (e.g. malloc) from the stack.

I may be remembering from the rev. 5 56800 tools, or rev 4, or just plain mis-remembering.

Thanks in advance.

Rick Corey
Sr. Software Engineer

The information contained in this message is confidential and intended only for use of the designated recipient(s) named above. If the reader of this message is not the intended recipient or an agent responsible for delivering it to the intended recipient, you are hereby notified that you have received this message in error, and that any review, dissemination, distribution, copying, or alteration of this message is strictly prohibited. If you have received this communication in error, please notify the originator immediately and remove it from your system.