Tom Lane e64c7feb2f Tweak default memory context allocation policy so that a context is not ...

given any malloc block until something is first allocated in it; but
thereafter, MemoryContextReset won't release that first malloc block.
This preserves the quick-reset property of the original policy, without
forcing 8K to be allocated to every context whether any of it is ever
used or not.  Also, remove some more no-longer-needed explicit freeing
during ExecEndPlan.

2002-12-15 21:01:34 +00:00

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