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Optimize [nmd]alloc() fast paths.

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Optimize [nmd]alloc() fast paths such that the (flags == 0) case is
streamlined, flags decoding only happens to the minimum degree
necessary, and no conditionals are repeated.
This commit is contained in:
Jason Evans 2014-09-07 14:40:19 -07:00
parent c21b05ea09
commit b718cf77e9
7 changed files with 172 additions and 131 deletions
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3
include/jemalloc/internal/size_classes.sh
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@ -202,6 +202,7 @@ cat <<EOF
* LG_TINY_MAXCLASS: Lg of maximum tiny size class.
* LOOKUP_MAXCLASS: Maximum size class included in lookup table.
* SMALL_MAXCLASS: Maximum small size class.
* LARGE_MINCLASS: Minimum large size class.
*/
#define LG_SIZE_CLASS_GROUP ${lg_g}
@ -246,6 +247,8 @@ cat <<EOF
# error "Too many small size classes"
#endif
#define LARGE_MINCLASS (PAGE_CEILING(SMALL_MAXCLASS+1))
#endif /* JEMALLOC_H_TYPES */
/******************************************************************************/
#ifdef JEMALLOC_H_STRUCTS