The Old New Thing

Why does my thread handle suddenly go bad? All I did was wait on it!

September 29, 2017 Sep 29, 2017 09/29/17

Raymond Chen

The scary world of _beginthread.

CancelIoEx can cancel synchronous I/O, which is kind of nice

September 28, 2017 Sep 28, 2017 09/28/17

Raymond Chen

Get me out of there.

How to check if a pointer is in a range of memory

September 27, 2017 Sep 27, 2017 09/27/17

Raymond Chen

Thanks to the C language standard, it's trickier than it seems.

What happens if I wake a condition variable when nobody is waiting for it? Is the wake saved for the next thread that waits?

September 25, 2017 Sep 25, 2017 09/25/17

Raymond Chen

It shouldn't matter.

What does it mean when I get an access violation at a very low address when entering a critical section?

September 22, 2017 Sep 22, 2017 09/22/17

Raymond Chen

It probably means that you're entering a critical section that is not initialized.

How accurate are the various Windows time-querying functions?

September 21, 2017 Sep 21, 2017 09/21/17

Raymond Chen

Most of them are based on the system timer, but some are better.

What is the correct way of using SaveDC and RestoreDC?

September 20, 2017 Sep 20, 2017 09/20/17

Raymond Chen

Understanding the model.