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Diffstat (limited to 'Doc/library/asyncio-policy.rst')
| -rw-r--r-- | Doc/library/asyncio-policy.rst | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/Doc/library/asyncio-policy.rst b/Doc/library/asyncio-policy.rst index aa8f8f1..d9d3232 100644 --- a/Doc/library/asyncio-policy.rst +++ b/Doc/library/asyncio-policy.rst @@ -257,6 +257,18 @@ implementation used by the asyncio event loop: This solution requires a running event loop in the main thread to work, as :class:`SafeChildWatcher`. +.. class:: PidfdChildWatcher + + This implementation polls process file descriptors (pidfds) to await child + process termination. In some respects, :class:`PidfdChildWatcher` is a + "Goldilocks" child watcher implementation. It doesn't require signals or + threads, doesn't interfere with any processes launched outside the event + loop, and scales linearly with the number of subprocesses launched by the + event loop. The main disadvantage is that pidfds are specific to Linux, and + only work on recent (5.3+) kernels. + + .. versionadded:: 3.9 + Custom Policies =============== |