Add analyzer for dex memory map
Use libpagemap to process vdex pages that are resident in memory.
Walks over each vdex file mapping in a given pid, processing in one of
two ways.
Using the -s (summarize) option gives, e.g.:
MAPPING /system/framework/arm64/boot.vdex: 7e90133000-7e90641000
DEX classes.dex: 7e90133000-7e90608000
Section name resident total % of % of
pages pages sect. total
Header 0 0 0.00 0.00
AnnotationSetReferenceItem 0 0 0.00 0.00
StringId 1 33 3.03 0.08
TypeId 0 4 0.00 0.00
ProtoId 1 21 4.76 0.08
FieldId 0 25 0.00 0.00
MethodId 2 69 2.90 0.16
ClassDef 0 26 0.00 0.00
AnnotationSetItem 0 13 0.00 0.00
CodeItem 1 555 0.18 0.08
AnnotationsDirectoryItem 0 34 0.00 0.00
TypeList 0 10 0.00 0.00
StringData 2 174 1.15 0.16
DebugInfo 0 175 0.00 0.00
AnnotationItem 0 29 0.00 0.00
EncodedArrayItem 0 3 0.00 0.00
ClassData 0 59 0.00 0.00
GRAND TOTAL 7 1230 0.57
Using the -v (verbose) option gives, e.g.:
MAPPING /system/framework/arm64/boot.vdex: 7e90133000-7e90641000
DEX classes.dex: 7e90133000-7e90608000
SSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSS
STTTTPPPPPPP.PPPPPPPPPPPPPPFFFFF
FFF.FFFF.F.F.FFFF...MMMMMMMMMMMM
MMMMMMMM.MM.....MMMMMMMMMMM..MMM
.M.MMM..MMMM.MMMMMMMMMMM.CCCCCCC
CCCCCCCCCCC.C.CCCCCC22.2........
.XX...XXX..XXXXXXX.............X
.XXXX......XXXXX..XXXX.XXXX..XXX
.............X..XX....X.XXXX....
..X....X...X..X..XXX.XXXXX.XXX.X
X.X.X..........X.X...........XXX
X...............................
.......X.....................XXX
..XX...XX.....X............XX.X.
.....XXXX......X.X..X...........
.XXXXXXX..XXXXXXXX..............
......XXXX...XX...XX..XXXX...X..
.......................X........
.......................X.XX..XX.
X...........X.X.X.X.............
X.....XXX..........XXXXX.XX.XX.X
XXXXX...........................
............X.................X.
X..............4....4...........
............4.tttttttttts...sss.
.ss.ss..s.ss.sssssss.sssssssssss
ssssssssssssssssssssssssssssssss
ssssssssssssssssssss.ss...ssss.s
ssssssssssssssssssssssssssssssss
ssssssssssssssssssssssssssssssss
sssssssss..DD.DD...DD...........
............D...................
................................
...................D.....DD.....
...........................D.D..
.D........................3...3.
......................EEE.c..ccc
.cc.ccc.c.c.....c.cc.ccc..c.....
.c...ccc.cc.ccc......
Where the letters indicate a page of a particular dex file section are
resident in memory and '.' indicates a page is not resident.
Bug: 35800981
Test: dexdiag <pid>
Change-Id: Ib4662fe499ad82d4f0baace2affab0d56f0890c9
4 files changed