pgsql-server/src backend/commands/prepare.c ba ...

CVSROOT:    /cvsroot
Module name:    pgsql-server
Changes by:    tgl@postgresql.org    02/12/15 16:01:34

Modified files:
    src/backend/commands: prepare.c trigger.c
    src/backend/executor: execJunk.c execMain.c spi.c
    src/backend/utils/cache: relcache.c
    src/backend/utils/mmgr: aset.c mcxt.c
    src/include/executor: executor.h
    src/include/nodes: execnodes.h
    src/include/utils: memutils.h

Log message:
    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.