gh-129165: Clarify that signal.raise_signal() sends signal to calling thread - #129167
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| .. function:: raise_signal(signum) | ||
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| Sends a signal to the calling process. Returns nothing. | ||
| Sends a signal to the calling thread, not the entire process. Returns nothing. |
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- While we're here, it might be worth mentioning that on POSIX systems, this is equivalent to calling
signal.pthread_kill(threading.get_ident(), signum). Or, we could just link to the manpages forraise. - This is the correct description for POSIX, but what about Windows?
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The documentation for signal.raise_signal(signum) previously stated that it
"sends a signal to the calling process," which is misleading. In reality,
the signal is sent to the calling thread, which may cause different behavior
in multi-threaded applications.
This PR updates the documentation to clarify that
raise_signal()sendsthe signal to the calling thread instead of the entire process.
Fixes gh-129165.
📚 Documentation preview 📚: https://cpython-previews--129167.org.readthedocs.build/