On Fri, 22 Aug 2014, Frank Poretzky wrote:
Hi,
in MS Windows is there a way to increase stack size for an executable
run through TProcess?
Not that I am aware of.
For portability reasons I tried to migrate from
CreateProcess to TProcess, but when executing more complex operations of
the called program it now aborts due to a memory shortage though simpler
tasks in the same program run correctly. I've already set the project's
heap (-Ch) and stack size (-Cs) to high values.
AProcess.Options := [poUsePipes, poNoConsole];
AProcess.PipeBufferSize := 2048;
AProcess.ShowWindow := swoNone;
AProcess.CurrentDirectory := ExtractFilePath( ExeStr);
AProcess.Executable := ExeStr;
AProcess.Parameters.Text := ParStr;
AProcess.Execute;
makes problems whereas with
CreateProcess( nil,
PChar( ExeStr + ' ' + ParStr),
@SecAttribs, nil,
true,
CREATE_NEW_CONSOLE or CREATE_SEPARATE_WOW_VDM or
the CREATE_SEPARATE_WOW_VDM is something that does not exist in TProcess,
but since it is used to control 16-bit processes, I doubt this is the cause of your problem.
CREATE_NEW_PROCESS_GROUP or NORMAL_PRIORITY_CLASS,
nil,
PChar( ExtractFilePath( ExeStr)),
StartInfo, ProcInfo);
as well as run directly from the commandline it works properly.
Does the program create output ?
If so, are you reading the output from the pipes ? If not, this is most likely your problem.
When the I/O buffers are full, The program will block till you read the output and thus free
the I/O buffers...
Michael.
_______________________________________________
fpc-pascal maillist - fpc-pascal@lists.freepascal.org
http://lists.freepascal.org/cgi-bin/mailman/listinfo/fpc-pascal
