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author	Tom Lane <tgl@sss.pgh.pa.us>
	Sat, 10 Jan 2009 21:08:36 +0000 (21:08 +0000)
committer	Tom Lane <tgl@sss.pgh.pa.us>
	Sat, 10 Jan 2009 21:08:36 +0000 (21:08 +0000)
commit	b6c99f7b2e13e6d036dad3aaf610f4a402596827
tree	d0ffccaa45af2ca687526c73d32cb452fa88acb4	tree
parent	0a38a5d3c7f1a418bf07742d406531465e177c9c	commit \| diff

Revise the TIDBitmap API to support multiple concurrent iterations over a
bitmap. This is extracted from Greg Stark's posix_fadvise patch; it seems
worth committing separately, since it's potentially useful independently of
posix_fadvise.

Simon's dev repository

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src/backend/access/gin/ginget.c		diff \| blob \| blame \| history
src/backend/access/gin/ginscan.c		diff \| blob \| blame \| history
src/backend/executor/nodeBitmapHeapscan.c		diff \| blob \| blame \| history
src/backend/nodes/tidbitmap.c		diff \| blob \| blame \| history
src/include/access/gin.h		diff \| blob \| blame \| history
src/include/nodes/execnodes.h		diff \| blob \| blame \| history
src/include/nodes/tidbitmap.h		diff \| blob \| blame \| history