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Added more control over write barrier. in particular separated scans after a hit.

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Copied from Perforce
 Change: 186988
 ServerID: perforce.ravenbrook.com
This commit is contained in:
David Lovemore 2014-08-27 11:21:18 +01:00
parent 46d723c9dc
commit b4460043e6
4 changed files with 21 additions and 13 deletions
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2
mps/code/mpmst.h
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@ -285,6 +285,7 @@ typedef struct SegStruct { /* segment structure */
TraceSet white : TraceLIMIT; /* traces for which seg is white */
TraceSet nailed : TraceLIMIT; /* traces for which seg has nailed objects */
RankSet rankSet : RankLIMIT; /* ranks of references in this seg */
unsigned scans : SEG_SCANS_BITS; /* use write barrier after this many scans */
} SegStruct;
@ -300,7 +301,6 @@ typedef struct GCSegStruct { /* GC segment structure */
RingStruct greyRing; /* link in list of grey segs */
RefSet summary; /* summary of references out of seg */
Buffer buffer; /* non-NULL if seg is buffered */
unsigned unnecessaryScans; /* consecutive unnecessary scans performed */
Sig sig; /* <design/sig/> */
} GCSegStruct;