Hi,
I’m having some problems with
process termination under CDT that I hope someone can help with. This might be a candidate for a bugzilla, but I thought I’d ask here
first.
As part of our launch process for
a remote hardware target, we need to download the elf file to the board. This is accomplished by a shell script
which does some processing and then launches an executable to download to the
board. So we have a step in our
launch which runs the download script.
If the elf file is large, the download can take some time, so it would
be nice to be able to cancel the process. Here’s a snippet of code from the
launch configuration delegate which should allow for cancelling:
Process
process = exec(runCommandArray, getEnvironmentProperty(config), currentWorkingDir);
IProcess
downloadProcess = DebugPlugin.newProcess(launch, process, renderProcessLabel(getRunLabel()));
int
total_work = 0;
while
(!downloadProcess.isTerminated())
{
if (monitor.isCanceled())
{
if (downloadProcess.canTerminate())
downloadProcess.terminate();
return
false;
}
if (total_work <= 90)
monitor.worked(10);
try
{
Thread.sleep(1000);
}
catch (InterruptedException e)
{}
}
The runCommandArray consists of the path for sh, then the name of the script and then the arguments for
the script. The exec command ends
up running the following line of code:
ProcessFactory.getFactory().exec(cmdLine,
envp, workingDirectory);
When the script is run from the
command line, it can be cancelled successfully and it cleans up its child
processes. However, when run from
eclipse, the call to terminate() hangs until the
download program (which was launched by the script) has finished. From debugging, it looks as though the
culprit is the call to:
((SpawnerInputStream)getErrorStream()).close();
in the
destroy method of the Spawner.
Sorry for the lengthy description
of the problem, but is there some part of the cancel process that I’m missing,
or is there some kind of problem with the Spawner
that means that it doesn’t terminate processes properly? I’m running on Windows XP and the
problem seems to exist in CDT 1.2.1 and 2.0. If a bugzilla would be more appropriate than a discussion in
this mailing list, feel free to let me know and I’ll submit the problem
there.
Thanks in
advance,
James
Langley
Senior
Software Engineer
Altera European Technology Centre
Holmers
Farm Way
High
Wycombe
Bucks HP12 4XF
United Kingdon
http://www.altera.com
