Hi,

I use heaptrc unit without any problem, using Lazarus project options.

Now I try fcl-web applications (curently fphttpapp) and... heaptrc does not work. I see the heap.trc file creation in the project directory, but the file in simply empty.

I wonder if it is working for someone else.

Thierry B. wrote

Now I try fcl-web applications (curently fphttpapp) and... heaptrc does not work.

It's because the FCL code is not heaptrc enabled. Simply add the fcl-web source path to your project and recompile.

Regards,
- Graeme -

Graeme Geldenhuys wrote

add the fcl-web source path to your project

Thanks, I tried that but it still does not work. But I discovered that's because the program is never terminated gracefully. Stopping the debugger after the html page is displayed (if ran from Lazarus) or using Ctrl+C (if ran from the command line) does not fill heap.trc.

However using Application.Terminate (as explained in Lelelumbo Basic fpWeb Tutorial) does fill heap.trc (without the need to add the fcl-web path).

Certainly. HeapTrc only does automatic writing at the end of your program, which must terminate gracefully (unit finalization section only executes that way). You can actually call DumpHeap anytime in the program flow, but that displays leaks only until that point, might be good to have an endpoint for this so you can check for leaks anytime.