bpo-33608: Simplify DISPATCH by hoisting eval_breaker ahead of time.#12062
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ericsnowcurrently merged 2 commits intopython:masterfrom Mar 1, 2019
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…ngCall(). (GH-11617) (GH-12159) * Revert "bpo-36097: Use only public C-API in the_xxsubinterpreters module (adding as necessary). (#12003)" This reverts commit bcfa450. * Revert "bpo-33608: Simplify ceval's DISPATCH by hoisting eval_breaker ahead of time. (gh-12062)" This reverts commit bda918b. * Revert "bpo-33608: Use _Py_AddPendingCall() in _PyCrossInterpreterData_Release(). (gh-12024)" This reverts commit b05b711. * Revert "bpo-33608: Factor out a private, per-interpreter _Py_AddPendingCall(). (GH-11617)" This reverts commit ef4ac96.
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@pitrou insightfully suggested hoisting the eval breaker ahead of time to mitigate any performance hit to ceval's DISPATCH. Regardless of the impact of PR #11617, it's likely a good idea.
Also, I found that the
_Py_atomic_*macros had some problems, due to lack of parentheses where appropriate (FWIW, mostly introduced in 2017 in gh-2383). I've fixed those.https://bugs.python.org/issue33608