Thread: urgent doubt in windows programming, please help me

The below code when run, assuming necessary header files will give following output?

Code:

HANDLE hProcess = CreateProcess(..);
WaitForSingleObject(hProcess, INFINITE);

a) wait for I/O
b) scheduled
c)finished executed
d)wait infinite

I guess it won't wait here....what do you think?

i guess timeout won't happen here since its INFINITE...pls help me?

the logic of the code snippet is all wrong. CreateProcess does not return a HANDLE. it returns a BOOL value indicating success or failure. the handle comes from the process structure you pass to CreateProcess. if CreateProcess is successful, you will be waiting on a handle of some undefined, nonzero value, which is of no relevance to the process you created. if CreateProcess fails, you'll be waiting on the "System Idle Process," which will likely block forever. you may be correct in thinking it won't return, but you also may be wrong, depending on the result of CreateProcess. therefore the behavior of your program here is undefined.

do you mean answer is d) and it waits infinite...i thought it was c) as it will not wait and finishes execution

Originally Posted by leo2008

do you mean answer is d) and it waits infinite...i thought it was c) as it will not wait and finishes execution

for the above code, until when will "wait" happen for hProcess?

did you even read my response?

yes read your response, but am confused still...can you be clear whether wait happens infinitely here?

Originally Posted by leo2008

yes read your response, but am confused still...can you be clear whether wait happens infinitely here?

it might, or it might not. like I said, the behavior of this program is undefined.