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protocols/pipe_ipc: autoclose pipe fds on process exit in AsyncioParentComm

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This commit is contained in:
Sebastien Bourdeauducq 2016-01-26 14:55:52 +01:00
parent 7a9864b260
commit 6383253e03
2 changed files with 16 additions and 9 deletions
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24
artiq/protocols/pipe_ipc.py
View File

@ -16,9 +16,6 @@ class _BaseIO:
async def read(self, n):
return await self.reader.read(n)
def close(self):
self.writer.close()
if os.name != "nt":
async def _fds_to_asyncio(rfd, wfd, loop):
@ -26,9 +23,9 @@ if os.name != "nt":
reader_protocol = asyncio.StreamReaderProtocol(reader, loop=loop)
wf = open(wfd, "wb", 0)
transport, protocol = await loop.connect_write_pipe(
transport, _ = await loop.connect_write_pipe(
FlowControlMixin, wf)
writer = asyncio.StreamWriter(transport, protocol,
writer = asyncio.StreamWriter(transport, reader_protocol,
None, loop)
rf = open(rfd, "rb", 0)
@ -45,6 +42,10 @@ if os.name != "nt":
def get_address(self):
return "{},{}".format(self.c_rfd, self.c_wfd)
async def _autoclose(self):
await self.process.wait()
self.writer.close()
async def create_subprocess(self, *args, **kwargs):
loop = asyncio.get_event_loop()
self.process = await asyncio.create_subprocess_exec(
@ -54,6 +55,7 @@ if os.name != "nt":
self.reader, self.writer = await _fds_to_asyncio(
self.p_rfd, self.p_wfd, loop)
asyncio.ensure_future(self._autoclose())
class AsyncioChildComm(_BaseIO):
@ -65,6 +67,9 @@ if os.name != "nt":
self.reader, self.writer = await _fds_to_asyncio(
int(rfd), int(wfd), asyncio.get_event_loop())
def close(self):
self.writer.close()
class ChildComm:
def __init__(self, address):
@ -88,7 +93,10 @@ if os.name != "nt":
else: # windows
class AsyncioParentComm(_BaseIO):
pass
async def _autoclose(self):
await self.process.wait()
self.writer.close()
class AsyncioChildComm(_BaseIO):
"""Requires ProactorEventLoop"""
@ -100,9 +108,9 @@ else: # windows
self.reader = asyncio.StreamReader(loop=loop)
reader_protocol = asyncio.StreamReaderProtocol(
self.reader, loop=loop)
transport, protocol = await loop.create_pipe_connection(
transport, _ = await loop.create_pipe_connection(
self.address, lambda: reader_protocol)
self.writer = asyncio.StreamWriter(transport, protocol,
self.writer = asyncio.StreamWriter(transport, reader_protocol,
self.reader, loop)
class ChildComm:

1
artiq/test/pipe_ipc.py
View File

@ -30,7 +30,6 @@ class IPCCase(unittest.TestCase):
self.assertEqual(int(s), i+1)
ipc.write(b"-1\n")
await ipc.process.wait()
ipc.close()
def test_blocking(self):
self.loop.run_until_complete(self._coro_test(False))