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bpo-40533: Disable GC in subinterpreters (GH-19961)

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When Python is built with experimental isolated interpreters, a
garbage collection now does nothing in an isolated interpreter.

Temporary workaround until subinterpreters stop sharing Python
objects.
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Victor Stinner 2020-05-06 18:25:06 +02:00 committed by GitHub
parent 89fc4a34cf
commit d8135e913a
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1 changed files with 8 additions and 0 deletions
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8
Modules/gcmodule.c
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@ -1181,6 +1181,14 @@ collect(PyThreadState *tstate, int generation,
_PyTime_t t1 = 0; /* initialize to prevent a compiler warning */
GCState *gcstate = &tstate->interp->gc;
#ifdef EXPERIMENTAL_ISOLATED_SUBINTERPRETERS
if (tstate->interp->config._isolated_interpreter) {
// bpo-40533: The garbage collector must not be run on parallel on
// Python objects shared by multiple interpreters.
return 0;
}
#endif
if (gcstate->debug & DEBUG_STATS) {
PySys_WriteStderr("gc: collecting generation %d...\n", generation);
show_stats_each_generations(gcstate);