Purge all if the last thread migrated away from an arena.
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@ -472,6 +472,12 @@ arena_migrate(tsd_t *tsd, unsigned oldind, unsigned newind) {
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arena_nthreads_dec(oldarena, false);
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arena_nthreads_inc(newarena, false);
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tsd_arena_set(tsd, newarena);
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if (arena_nthreads_get(oldarena, false) == 0) {
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/* Purge if the old arena has no associated threads anymore. */
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arena_decay(tsd_tsdn(tsd), oldarena,
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/* is_background_thread */ false, /* all */ true);
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}
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}
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static void
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