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79 lines
2.0 KiB
79 lines
2.0 KiB
3 years ago
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from abc import abstractmethod
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from signal import Signals
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from typing import Optional
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from ._resources import AsyncResource
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from ._streams import ByteReceiveStream, ByteSendStream
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class Process(AsyncResource):
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"""An asynchronous version of :class:`subprocess.Popen`."""
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@abstractmethod
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async def wait(self) -> int:
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"""
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Wait until the process exits.
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:return: the exit code of the process
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"""
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@abstractmethod
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def terminate(self) -> None:
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"""
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Terminates the process, gracefully if possible.
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On Windows, this calls ``TerminateProcess()``.
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On POSIX systems, this sends ``SIGTERM`` to the process.
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.. seealso:: :meth:`subprocess.Popen.terminate`
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"""
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@abstractmethod
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def kill(self) -> None:
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"""
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Kills the process.
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On Windows, this calls ``TerminateProcess()``.
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On POSIX systems, this sends ``SIGKILL`` to the process.
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.. seealso:: :meth:`subprocess.Popen.kill`
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"""
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@abstractmethod
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def send_signal(self, signal: Signals) -> None:
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"""
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Send a signal to the subprocess.
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.. seealso:: :meth:`subprocess.Popen.send_signal`
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:param signal: the signal number (e.g. :data:`signal.SIGHUP`)
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"""
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@property
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@abstractmethod
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def pid(self) -> int:
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"""The process ID of the process."""
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@property
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@abstractmethod
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def returncode(self) -> Optional[int]:
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"""
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The return code of the process. If the process has not yet terminated, this will be
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``None``.
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"""
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@property
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@abstractmethod
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def stdin(self) -> Optional[ByteSendStream]:
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"""The stream for the standard input of the process."""
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@property
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@abstractmethod
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def stdout(self) -> Optional[ByteReceiveStream]:
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"""The stream for the standard output of the process."""
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@property
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@abstractmethod
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def stderr(self) -> Optional[ByteReceiveStream]:
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"""The stream for the standard error output of the process."""
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