IS there a way to get the current process name from root? I would have thought there would be something in TSystem, but I did not see it.
Thanks!
Ed
Hi Ed,
Try TApplication::Argv() / TApplication::Argc():
int argc = gApplication->Argc();
char **argv = gApplication->Argv();
for (int i=0; i<argc;++i) {
std::cout << "argv[" << i << "]: " << argv[i] << std::endl;
}
(the process name is argv[0])
Cheers, Bertrand.
Sadly, that does not work for a standalone application - gApplication->Argc() returns 0. Argv[0] is “root” when the application is a dll loaded into root…
Ed
Well, if the dll is loaded into root, then root is the name of the main process (or did I miss something?)… What else would you expect in this case?
And BTW, I just tried a standalone application on Windows, and it properly returns the application name.
Cheers, Bertrand.
Hi Bertrand,
I agree with you - if dll is loaded into root, then root is the proper application name.
My stand-alone application has all the root initialization done in a class constructor:CSummary::CSummary()
{
fStopwatch = new TStopwatch;
if(bNo) TTree *pt = new TTree();
if(bNo) TPad *pp = new TPad();
m_fpOut=0;
m_pPath=0;
gROOT->SetBatch();
TApplication *pApp = new TApplication("RhitCrawler",0,0);
fTotal = new Int_t [5];
memset(fTotal,0,5*sizeof(Int_t));
fDelim = 0;
}
I added the code you suggested, immediately after the TApplication *pApp=… line and argc is zero… I wrote this ages ago and do not know what gROOT->SetBatch() even does… (I am currently using 5.34/01)
Thanks,
Ed
Oh yes, this obviously cannot work, since argc and argv are usually passed to the TApplication constructor…
Then I’m afraid you will have to use a non-ROOT (and non-portable) way of getting this information (or use the standard way of using the ROOT classes 
)
And gROOT->SetBatch() put ROOT in batch mode (without GUI/graphics)
Cheers, Bertrand.
Try to modify your “main” routine: int main(int argc, char **argv)
{
TApplication *pApp = new TApplication("RhitCrawler", &argc, argv);
// ...