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Tweak order of operations in BitmapHeapNext() to avoid the case of prefetching

author Tom Lane <tgl@sss.pgh.pa.us>

2009年1月12日 16:00:41 +0000 (16:00 +0000)

committer Tom Lane <tgl@sss.pgh.pa.us>

2009年1月12日 16:00:41 +0000 (16:00 +0000)

commit 8a4505013d9f19979fa83fced5588311d3b123d2

tree 4419e1e1c6bdec09cdafee0865e18e12a9b8a9ea tree

parent 405728f66976729b15dbc95bbbe3dfa147b5106f commit | diff

Tweak order of operations in BitmapHeapNext() to avoid the case of prefetching
the same page we are nanoseconds away from reading for real. There should be
something left to do on the current page before we consider issuing a prefetch.

src/backend/executor/nodeBitmapHeapscan.c diff | blob | blame | history

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