How to use "SuspendThread()".The error code is "5".

[gxlzlu]

Global array: HANDLE ThreadArray[5];

In main thread: ThreadArray=::CreateThread(NULL,0,(LPTHREAD_START_ROUTINE) ChildThread,&iArray,0,NULL)//just want to save the Handle of ChildThread.

In other thread:£º::SuspendThread(ThreadArray);//error

I use "::GetLasterror()" to get what the error is.It show me "5".So it is "access deny".But all of the threads is in the same process.I don't konw why??Who can help me??

 

[gxlzlu]

I am useing ATL.And all of this was declared in a componemt.(COM)

 

[DavesTips]

Can't say I quite understand your code.

ThreadArray=::CreateThread(NULL,0,(LPTHREAD_START_ROUTINE) ChildThread,&iArray,0,NULL)

won't compile since ThreadArray is a void*[] and CreateThread returns a void*. I.e, you need to say ThreadArray[0] or whatever. The same applies to SuspendThread() where you are passing the array itself and not the handle value from some element. This compiles though since you can convert any pointer to a void pointer.

I.e.,

::SuspendThread(ThreadArray[0]);

or so would be correct. Maybe this is a typo though. I'd expect an error code 6 invalid handle from SuspendThread().

Hope that this helped!

 

[gxlzlu]

Sorry!!I used "SuspendThread(ThreadArray)" in my program.Just write wrong.I am so sorry!!

I have check it in MSDN. Maybe I should set some security to those thread.But I don't know how to do.Could you help me?

After all Thanks for you help!!

 

[DavesTips]

I can't think of any reason why threads in the same process started under the same user should cause this problem, unless you've actually set a SD in the SECURITY_ATTRIBUTES which prevents access, which is not likely, I think. Maybe you're picking up some value which happens to be a valid thread handle, although kernel object handles are process-relative in NT or W2K (what are you using BTW?) Hope that this helped!