gh-109860: Use a New Thread State When Switching Interpreters, When Necessary #110245
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…tNotRunningMain().
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Thanks @ericsnowcurrently for the PR 🌮🎉.. I'm working now to backport this PR to: 3.12. |
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Sorry, @ericsnowcurrently, I could not cleanly backport this to |
ericsnowcurrently
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Oct 11, 2023
…eters, When Necessary (pythongh-110245) In a few places we switch to another interpreter without knowing if it has a thread state associated with the current thread. For the main interpreter there wasn't much of a problem, but for subinterpreters we were *mostly* okay re-using the tstate created with the interpreter (located via PyInterpreterState_ThreadHead()). There was a good chance that tstate wasn't actually in use by another thread. However, there are no guarantees of that. Furthermore, re-using an already used tstate is currently fragile. To address this, now we create a new thread state in each of those places and use it. One consequence of this change is that PyInterpreterState_ThreadHead() may not return NULL (though that won't happen for the main interpreter). (cherry-picked from commit f5198b0)
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GH-110709 is a backport of this pull request to the 3.12 branch. |
ericsnowcurrently
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Oct 12, 2023
…eters, When Necessary (pythongh-110245) In a few places we switch to another interpreter without knowing if it has a thread state associated with the current thread. For the main interpreter there wasn't much of a problem, but for subinterpreters we were *mostly* okay re-using the tstate created with the interpreter (located via PyInterpreterState_ThreadHead()). There was a good chance that tstate wasn't actually in use by another thread. However, there are no guarantees of that. Furthermore, re-using an already used tstate is currently fragile. To address this, now we create a new thread state in each of those places and use it. One consequence of this change is that PyInterpreterState_ThreadHead() may not return NULL (though that won't happen for the main interpreter). (cherry-picked from commit f5198b0)
Glyphack
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Sep 2, 2024
…When Necessary (pythongh-110245) In a few places we switch to another interpreter without knowing if it has a thread state associated with the current thread. For the main interpreter there wasn't much of a problem, but for subinterpreters we were *mostly* okay re-using the tstate created with the interpreter (located via PyInterpreterState_ThreadHead()). There was a good chance that tstate wasn't actually in use by another thread. However, there are no guarantees of that. Furthermore, re-using an already used tstate is currently fragile. To address this, now we create a new thread state in each of those places and use it. One consequence of this change is that PyInterpreterState_ThreadHead() may not return NULL (though that won't happen for the main interpreter).
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In a few places we switch to another interpreter without knowing if it has a thread state associated with the current thread. For the main interpreter there wasn't much of a problem, but for subinterpreters we were mostly okay re-using the tstate created with the interpreter (located via
PyInterpreterState_ThreadHead()). There was a good chance that tstate wasn't actually in use by another thread.However, there are no guarantees of that. Furthermore, re-using an already used tstate is currently fragile. To address this, now we create a new thread state in each of those places and use it.
One consequence of this change is that
PyInterpreterState_ThreadHead()may not returnNULL(though that won't happen for the main interpreter).