mirror of
https://github.com/m-labs/artiq.git
synced 2024-12-25 11:18:27 +08:00
protocols/pipe_ipc: Windows support
This commit is contained in:
parent
83fd160614
commit
dce2aac475
@ -3,6 +3,9 @@ import asyncio
|
||||
from asyncio.streams import FlowControlMixin
|
||||
|
||||
|
||||
__all__ = ["AsyncioParentComm", "AsyncioChildComm", "ChildComm"]
|
||||
|
||||
|
||||
class _BaseIO:
|
||||
def write(self, data):
|
||||
self.writer.write(data)
|
||||
@ -92,10 +95,78 @@ if os.name != "nt":
|
||||
|
||||
|
||||
else: # windows
|
||||
class AsyncioParentComm(_BaseIO):
|
||||
import itertools
|
||||
|
||||
|
||||
_pipe_count = itertools.count()
|
||||
|
||||
|
||||
class AsyncioParentComm:
|
||||
"""Requires ProactorEventLoop"""
|
||||
def __init__(self):
|
||||
# We cannot use anonymous pipes on Windows, because we do not know
|
||||
# in advance if the child process wants a handle open in overlapped
|
||||
# mode or not.
|
||||
self.address = "\\\\.\\pipe\\artiq-{}-{}".format(os.getpid(),
|
||||
next(_pipe_count))
|
||||
self.server = None
|
||||
self.ready = asyncio.Event()
|
||||
self.write_buffer = b""
|
||||
|
||||
def get_address(self):
|
||||
return self.address
|
||||
|
||||
async def _autoclose(self):
|
||||
await self.process.wait()
|
||||
self.writer.close()
|
||||
if self.server is not None:
|
||||
self.server[0].close()
|
||||
self.server = None
|
||||
if self.ready.is_set():
|
||||
self.writer.close()
|
||||
|
||||
async def create_subprocess(self, *args, **kwargs):
|
||||
loop = asyncio.get_event_loop()
|
||||
|
||||
def factory():
|
||||
reader = asyncio.StreamReader(loop=loop)
|
||||
protocol = asyncio.StreamReaderProtocol(reader,
|
||||
self._child_connected,
|
||||
loop=loop)
|
||||
return protocol
|
||||
self.server = await loop.start_serving_pipe(
|
||||
factory, self.address)
|
||||
|
||||
self.process = await asyncio.create_subprocess_exec(
|
||||
*args, **kwargs)
|
||||
asyncio.ensure_future(self._autoclose())
|
||||
|
||||
def _child_connected(self, reader, writer):
|
||||
self.server[0].close()
|
||||
self.server = None
|
||||
self.reader = reader
|
||||
self.writer = writer
|
||||
if self.write_buffer:
|
||||
self.writer.write(self.write_buffer)
|
||||
self.write_buffer = b""
|
||||
self.ready.set()
|
||||
|
||||
def write(self, data):
|
||||
if self.ready.is_set():
|
||||
self.writer.write(data)
|
||||
else:
|
||||
self.write_buffer += data
|
||||
|
||||
async def drain(self):
|
||||
await self.ready.wait()
|
||||
await self.writer.drain()
|
||||
|
||||
async def readline(self):
|
||||
await self.ready.wait()
|
||||
return await self.reader.readline()
|
||||
|
||||
async def read(self, n):
|
||||
await self.ready.wait()
|
||||
return await self.reader.read(n)
|
||||
|
||||
|
||||
class AsyncioChildComm(_BaseIO):
|
||||
@ -109,9 +180,26 @@ else: # windows
|
||||
reader_protocol = asyncio.StreamReaderProtocol(
|
||||
self.reader, loop=loop)
|
||||
transport, _ = await loop.create_pipe_connection(
|
||||
self.address, lambda: reader_protocol)
|
||||
lambda: reader_protocol, self.address)
|
||||
self.writer = asyncio.StreamWriter(transport, reader_protocol,
|
||||
self.reader, loop)
|
||||
|
||||
def close(self):
|
||||
self.writer.close()
|
||||
|
||||
|
||||
class ChildComm:
|
||||
pass
|
||||
def __init__(self, address):
|
||||
self.f = open(address, "a+b", 0)
|
||||
|
||||
def read(self, n):
|
||||
return self.f.read(n)
|
||||
|
||||
def readline(self):
|
||||
return self.f.readline()
|
||||
|
||||
def write(self, data):
|
||||
return self.f.write(data)
|
||||
|
||||
def close(self):
|
||||
self.f.close()
|
||||
|
Loading…
Reference in New Issue
Block a user