multithreading - Can I measure actual memory usage of a thread? -


if yes, apreciate example in delphi.

i tried using tmemorymanagerstate , getprocessmemoryinfo

it looks able track memory scalemm (https://code.google.com/p/scalemm/) allocates memory thread. out of box doesn't have need there places can add it.

if @ code, can either walk memory lists when need amount of memory allocated or hook tthreadmemmanager.getmem, tthreadmemmanager.freemem , tthreadmemmanager.freememfromotherthread calls. code in scalemm2.pas file. should pretty easy add memcount tthreadmemmanager there 1 per thread. other alternative @ code in tmediumthreadmanager.releaseallfreemem see how walks list. similar , list of allocated ram @ point in time.

be bit careful of things block sizes , fragmentation mean misleading results.

here of changes scalemm2 return memory usage each thread:

i added variable called totalallocated tthreadmemmanager:

  fsmallmemmanager : tsmallmemthreadmanager;   fmediummemmanager: tmediumthreadmanager;   flargememmanager : tlargememthreadmanager;   ftotalallocated: int64; protected

i added following 2 lines bottom of freemem:

  {$ifdef scalemm_debug}   checkmem(nil);   {$endif}   ftotalallocated := ftotalallocated + pm.size; end;

and getmem:

  {$ifdef scalemm_debug}   checkmem(nil);   {$endif}   ftotalallocated := ftotalallocated + asize; end;

i created global list called fthreadmanagerlist:

fthreadmanagerlist: tlist<pthreadmemmanager>

and @ start of threads wanted check added following code:

var   threadmanager: pthreadmemmanager; begin   threadmanager := getthreadmemmanager;   synchronize(     procedure     begin       fthreadmanagerlist.add(threadmanager);     end);

after that, getting memory threads simple this:

for := 0 fthreadmanagerlist.count - 1 begin   listbox1.items.add(inttostr(fthreadmanagerlist[i].fthreadid)+' : '+inttostr(fthreadmanagerlist[i].ftotalallocated)); end;

i didn't cross thread allocations, need bit of research , see how work. didn't race conditions don't think problem either unless 1 of threads exits. should give start with.


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