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J. Nick Koston
8b840e8517
The freelist holds the boot-peak count of recycled SchedulerItem*; items_, to_add_, and defer_queue_ hold the boot-peak vector *capacity* of live SchedulerItem*. std::vector grows by doubling and retains capacity even when items drain, so post-boot the vector slack can be larger than the freelist itself. Swap each with a same-content copy to size them exactly to their current contents. Live items are preserved -- the swap-copy idiom builds the new vector from the existing pointers, then the old (over-capacity) vector is destroyed.
