tree 57362213f337f161a6989e38c077c4a230654a58
parent 2a92847c242376ae9213e4bafc32a62cef7e8ee9
author David Benjamin <davidben@google.com> 1525586928 -0400
committer CQ bot account: commit-bot@chromium.org <commit-bot@chromium.org> 1525719840 +0000

Fix bssl select loop on Windows.

While |WaitForMultipleObjects| works for both sockets and stdin, the
latter is often a line-buffered console. The |HANDLE| is considered
readable if there are any console events available, but reading blocks
until a full line is available. (In POSIX, line buffering is implemented
in the kernel via termios, which is differently concerning, but does
mean |select| works as expected.)

So that |Wait| reflects final stdin read, we spawn a stdin reader thread
that writes to an in-memory buffer and signals a |WSAEVENT| to
coordinate with the socket. This is kind of silly, but it works.

I tried just writing it to a pipe, but it appears
|WaitForMultipleObjects| does not work on pipes!

Change-Id: I2bfa323fa91aad7d2035bb1fe86ee6f54b85d811
Reviewed-on: https://boringssl-review.googlesource.com/28165
Reviewed-by: Steven Valdez <svaldez@google.com>
Commit-Queue: Steven Valdez <svaldez@google.com>
CQ-Verified: CQ bot account: commit-bot@chromium.org <commit-bot@chromium.org>