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pgindent run for 9.0
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@@ -11,7 +11,7 @@
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* Portions Copyright (c) 1994, Regents of the University of California
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*
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* IDENTIFICATION
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* $PostgreSQL: pgsql/src/backend/utils/mmgr/aset.c,v 1.82 2010/01/02 16:57:58 momjian Exp $
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* $PostgreSQL: pgsql/src/backend/utils/mmgr/aset.c,v 1.83 2010/02/26 02:01:14 momjian Exp $
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*
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* NOTE:
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* This is a new (Feb. 05, 1999) implementation of the allocation set
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@@ -286,13 +286,13 @@ AllocSetFreeIndex(Size size)
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tsize = (size - 1) >> ALLOC_MINBITS;
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/*
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* At this point we need to obtain log2(tsize)+1, ie, the number
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* of not-all-zero bits at the right. We used to do this with a
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* shift-and-count loop, but this function is enough of a hotspot
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* to justify micro-optimization effort. The best approach seems
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* to be to use a lookup table. Note that this code assumes that
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* ALLOCSET_NUM_FREELISTS <= 17, since we only cope with two bytes
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* of the tsize value.
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* At this point we need to obtain log2(tsize)+1, ie, the number of
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* not-all-zero bits at the right. We used to do this with a
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* shift-and-count loop, but this function is enough of a hotspot to
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* justify micro-optimization effort. The best approach seems to be
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* to use a lookup table. Note that this code assumes that
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* ALLOCSET_NUM_FREELISTS <= 17, since we only cope with two bytes of
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* the tsize value.
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*/
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t = tsize >> 8;
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idx = t ? LogTable256[t] + 8 : LogTable256[tsize];
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