tree c5c77139bf226ae7bf4f1d67a891f8eef61b026d
parent d42410b21c4314143f31fd7f8494dd1d4c279663
author Chris Dickens <christopher.a.dickens@gmail.com> 1597767543 -0700
committer Chris Dickens <christopher.a.dickens@gmail.com> 1597767543 -0700

Windows: Fix I/O completion port thread behavior on error

The GetQueuedCompletionStatus() returns FALSE when the I/O operation
itself does not complete successfully. The I/O completion thread should
therefore not exit on this condition. Adjust the check to verify that an
OVERLAPPED structure was provided and use an explicit completion key
value in the exit path to disambiguate receiving a valid NULL OVERLAPPED
pointer.

Signed-off-by: Chris Dickens <christopher.a.dickens@gmail.com>