[3.7] bpo-32604: Swap threads only if the interpreter is different. (gh-5778) #5783
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…gh-5778) The CPython runtime assumes that there is a one-to-one relationship (for a given interpreter) between PyThreadState and OS threads. Sending and receiving on a channel in the same interpreter was causing crashes because of this (specifically due to a check in PyThreadState_Swap()). The solution is to not switch threads if the interpreter is the same. (cherry picked from commit f53d9f2) Co-authored-by: Eric Snow <[email protected]>
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@ericsnowcurrently: Backport status check is done, and it's a success ✅ . |
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Thanks, @ericsnowcurrently! |
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The CPython runtime assumes that there is a one-to-one relationship (for a given interpreter) between PyThreadState and OS threads. Sending and receiving on a channel in the same interpreter was causing crashes because of this (specifically due to a check in PyThreadState_Swap()). The solution is to not switch threads if the interpreter is the same.
(cherry picked from commit f53d9f2)
Co-authored-by: Eric Snow [email protected]
https://bugs.python.org/issue32604