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Revert "Port _FileDescriptorStreamsNonBlocking to use poll()"

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This reverts commit 1e01a74445.

Not all platforms support select.poll() currently it seems.
At least macOS's Python 2 doesn't (while macOS Python 3 does).

Lets back this out for the existing release series and once we
start repo-2 which is Python 3-only, we can put this back in.

Change-Id: I205206b0fa4fe2d755f4fbc6ec683ad125f27cc2
Reviewed-on: https://gerrit-review.googlesource.com/c/git-repo/+/253072
Reviewed-by: Michael Mortensen <mmortensen@google.com>
Reviewed-by: Mike Frysinger <vapier@google.com>
Tested-by: Mike Frysinger <vapier@google.com>
This commit is contained in:
Mike Frysinger 2020-02-03 22:11:19 +00:00
parent 0bcc2d28d4
commit 91d9587e45
1 changed files with 3 additions and 15 deletions
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18
platform_utils.py
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@ -90,11 +90,6 @@ class _FileDescriptorStreamsNonBlocking(FileDescriptorStreams):
""" Implementation of FileDescriptorStreams for platforms that support
non blocking I/O.
"""
def __init__(self):
super(_FileDescriptorStreamsNonBlocking, self).__init__()
self._poll = select.poll()
self._fd_to_stream = {}
class Stream(object):
""" Encapsulates a file descriptor """
def __init__(self, fd, dest, std_name):
@ -118,18 +113,11 @@ class _FileDescriptorStreamsNonBlocking(FileDescriptorStreams):
self.fd.close()
def _create_stream(self, fd, dest, std_name):
stream = self.Stream(fd, dest, std_name)
self._fd_to_stream[stream.fileno()] = stream
self._poll.register(stream, select.POLLIN)
return stream
def remove(self, stream):
self._poll.unregister(stream)
del self._fd_to_stream[stream.fileno()]
super(_FileDescriptorStreamsNonBlocking, self).remove(stream)
return self.Stream(fd, dest, std_name)
def select(self):
return [self._fd_to_stream[fd] for fd, _ in self._poll.poll()]
ready_streams, _, _ = select.select(self.streams, [], [])
return ready_streams
class _FileDescriptorStreamsThreads(FileDescriptorStreams):