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Author SHA1 Message Date
Zachary Turner b2df30d652 Fix deadlock in Python one-line execution. 
Python one-line execution was using ConnectionFileDescriptor to do
a non-blocking read against a pipe.  This won't work on Windows,
as CFD is implemented using select(), and select() only works with
sockets on Windows.

The solution is to use ConnectionGenericFile on Windows, which uses
the native API to do overlapped I/O on the pipe.  This in turn
requires re-implementing Host::Pipe on Windows using native OS
handles instead of the more portable _pipe CRT api.

Reviewed by: Greg Clayton
Differential Revision: http://reviews.llvm.org/D5679

llvm-svn: 219339
 2014-10-08 20:38:41 +00:00
Zachary Turner 5cbeb850fb Fix compile error on Windows. 
llvm-svn: 219232
 2014-10-07 20:34:36 +00:00
Zachary Turner 12792af026 Create a ConnectionGenericFile class for Windows. 
This is the first step in getting ConnectionFileDescriptor ported
to Windows. It implements a connection against a disk file for
windows. This supports connection strings of the form file://PATH
which are currently supported only on posix platforms in
ConnectionFileDescriptor.

Reviewed by: Greg Clayton
Differential Revision: http://reviews.llvm.org/D5608

llvm-svn: 219145
 2014-10-06 21:23:09 +00:00