diff options
Diffstat (limited to 'Lib/asyncio/unix_events.py')
| -rw-r--r-- | Lib/asyncio/unix_events.py | 14 |
1 files changed, 12 insertions, 2 deletions
diff --git a/Lib/asyncio/unix_events.py b/Lib/asyncio/unix_events.py index 665901ad26..94a46d094c 100644 --- a/Lib/asyncio/unix_events.py +++ b/Lib/asyncio/unix_events.py @@ -258,6 +258,16 @@ class _UnixSelectorEventLoop(selector_events.BaseSelectorEventLoop): return server +if hasattr(os, 'set_blocking'): + def _set_nonblocking(fd): + os.set_blocking(fd, False) +else: + def _set_nonblocking(fd): + flags = fcntl.fcntl(fd, fcntl.F_GETFL) + flags = flags | os.O_NONBLOCK + fcntl.fcntl(fd, fcntl.F_SETFL, flags) + + class _UnixReadPipeTransport(transports.ReadTransport): max_size = 256 * 1024 # max bytes we read in one event loop iteration @@ -273,7 +283,7 @@ class _UnixReadPipeTransport(transports.ReadTransport): stat.S_ISSOCK(mode) or stat.S_ISCHR(mode)): raise ValueError("Pipe transport is for pipes/sockets only.") - os.set_blocking(self._fileno, False) + _set_nonblocking(self._fileno) self._protocol = protocol self._closing = False self._loop.add_reader(self._fileno, self._read_ready) @@ -366,7 +376,7 @@ class _UnixWritePipeTransport(transports._FlowControlMixin, stat.S_ISCHR(mode)): raise ValueError("Pipe transport is only for " "pipes, sockets and character devices") - os.set_blocking(self._fileno, False) + _set_nonblocking(self._fileno) self._protocol = protocol self._buffer = [] self._conn_lost = 0 |