| 8016bdee7ca1a066221a5d2fe5e60890de950a5b |
|
16-Jun-2016 |
Mathieu Chartier <mathieuc@google.com> |
Use collector specific helper classes
Changed to use inner classes. Also changed some visitors to lambdas.
Bug: 29413717
Bug: 19534862
(cherry picked from commit a07f55913824ab4215a9a4f827fa9c043c0d44d9)
Change-Id: I631c8bfe5f795eda4623c5bb4f357f2dd12358e2
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| a3f49273878512663ced0dbeec7ae2910df8a59f |
|
16-Jun-2016 |
Mathieu Chartier <mathieuc@google.com> |
Avoid duplicate class for mark compact
Renamed BitmapSetSlowPathVisitor to MCBitmapSetSlowPathVisitor for
the mark compact case.
Bug: 29413717
(cherry picked from commit d528f6819571ce5276cb71134044c55408a901a1)
Change-Id: Id5a7040c0c22a7a66309b8cbd7f874819852b10e
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| bcd9dd7d1223eaa60f188d1a109d26e5e0143e10 |
|
07-Mar-2016 |
Mathieu Chartier <mathieuc@google.com> |
Don't use ScopedObjectAccess in Heap::DumpSpaces
ScopedObjectAccess does not work well if the mutator lock is
excusively held while in a suspend thread state. This caused
deadlocks and DCHECK failures.
Bug: 27493316
(cherry picked from commit 03d21bc5bed887243ff6ce3531179185ffd3532c)
Change-Id: I5d67f74fc7082761e45dc1d7778b0ea7fceaaf8f
|
| 03d21bc5bed887243ff6ce3531179185ffd3532c |
|
07-Mar-2016 |
Mathieu Chartier <mathieuc@google.com> |
Don't use ScopedObjectAccess in Heap::DumpSpaces
ScopedObjectAccess does not work well if the mutator lock is
excusively held while in a suspend thread state. This caused
deadlocks and DCHECK failures.
Bug: 27493316
Change-Id: I75ab223b2d15ab4e53753f1046c580228fc1866e
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| 91d65e024846717fce3572106cffe9b957b8902c |
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19-Jan-2016 |
Roland Levillain <rpl@google.com> |
Fix various typos in ART's comments and string literals.
Change-Id: I85d628055b1a61647a77fef730c9631c234e22a2
|
| 763a31ed7a2bfad22a9cb07f5301a71c0f97ca49 |
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17-Nov-2015 |
Mathieu Chartier <mathieuc@google.com> |
Add immune spaces abstraction
ImmuneSpaces is a set of spaces which are not reclaimable by the GC in
the current collection. This set of spaces does not have requirements
about space adjacency like the old ImmuneRegion. ImmuneSpaces generates
the largest immune region for the GC. Since there is no requirement on
adjacency, it is possible to have multiple non-adjacent applicaton
image files.
For image spaces, we also look at the oat code which is normally after
the application image. In this case, we add the code as part of the
immune region. This is required to have both the boot image and the
zygote space be in the same immune region (for performance reasons).
Bug: 22858531
Change-Id: I5103b31c0e39ad63c594f5557fc848a3b288b43e
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| 951ec2c93c79c5539cbcc669566f0808d4460338 |
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22-Sep-2015 |
Mathieu Chartier <mathieuc@google.com> |
Revert "Revert "Add one LinearAlloc per ClassLoader""
Issue was fixed by:
https://android-review.googlesource.com/#/c/171945/
Bug: 22720414
This reverts commit 7de5dfe37f3cf24e1166412b589f6f67dcd1f1c0.
|
| 7de5dfe37f3cf24e1166412b589f6f67dcd1f1c0 |
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22-Sep-2015 |
Nicolas Geoffray <ngeoffray@google.com> |
Revert "Add one LinearAlloc per ClassLoader"
Times out on 32bit target/host for 132-daemon-locks-shutdown test.
Bug: 22720414
This reverts commit 356412e2b7ba3fde164bc08a44fee0ddc19c54e1.
Change-Id: I5ab3a09e88a5ad8c306a27d2606ecbecc80b9326
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| 356412e2b7ba3fde164bc08a44fee0ddc19c54e1 |
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21-Sep-2015 |
Mathieu Chartier <mathieuc@google.com> |
Add one LinearAlloc per ClassLoader
Also added freeing linear alloc and class table when the
corresponding class loader is no longer reachable.
Bug: 22720414
Change-Id: Icb32c3a4c865f240e147bc87ed080a6b1d8a5795
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| 059ef3ddb2088f926ac452889e0953fdcd646a5e |
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18-Aug-2015 |
Mathieu Chartier <mathieuc@google.com> |
Always visit object class from VisitReferences
We don't want to unload classes which have instances.
Slight increase in CMS GC time from ~6.5s to ~7.3s on
EvaluateAndApplyChanges.
Bug: 22720414
Change-Id: I467ff9c9d55163d2a90b999aef3bdd7b3f648bac
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| a4f6af9b1e6380b31674d7ac645b1732c846ac06 |
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12-Aug-2015 |
Mathieu Chartier <mathieuc@google.com> |
Some heap cleanup
Bug: 19534862
Change-Id: Ia63f489d26ec8813a263ce877bdbbc8c4e8fe5f4
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| da7c650022a974be10e2f00fa07d5109e3d8826f |
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24-Jul-2015 |
Mathieu Chartier <mathieuc@google.com> |
Visit class native roots from VisitReferences
Visit class roots when we call Class::VisitReferences instead of in
the class linker. This makes it easier to implement class unloading
since unmarked classes won't have their roots visited by the class
linker.
Bug: 22181835
Change-Id: I63f31e5ebef7b2a0b764b3ba3cb038b3f561b379
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| 90443477f9a0061581c420775ce3b7eeae7468bc |
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17-Jul-2015 |
Mathieu Chartier <mathieuc@google.com> |
Move to newer clang annotations
Also enable -Wthread-safety-negative.
Changes:
Switch to capabilities and negative capabilities.
Future work:
Use capabilities to implement uninterruptible annotations to work
with AssertNoThreadSuspension.
Bug: 20072211
Change-Id: I42fcbe0300d98a831c89d1eff3ecd5a7e99ebf33
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| 8118781ebc9659f806716c451bdb3fe9b77ae32b |
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15-Jul-2015 |
Mathieu Chartier <mathieuc@google.com> |
Address some GC comments
Follow-up from:
https://android-review.googlesource.com/#/c/159650/
Change-Id: Id14f29b4ce5b70b63fcb3e74f8503ae60a3ae444
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| 97509954404d031594b2ecbda607314d169d512e |
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13-Jul-2015 |
Mathieu Chartier <mathieuc@google.com> |
Clean up GC callbacks to be virtual methods
Change-Id: Ia08034a4e5931c4fcb329c3bd3c4b1f301135735
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| c785344b87221f5e4e6473e5b762e4e61fe65dcf |
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27-Mar-2015 |
Mathieu Chartier <mathieuc@google.com> |
Move ArtField to native
Add linear alloc. Moved ArtField to be native object. Changed image
writer to put ArtFields after the mirror section.
Savings:
2MB on low ram devices
4MB on normal devices
Total PSS measurements before (normal N5, 95s after shell start):
Image size: 7729152 bytes
23112 kB: .NonMoving
23212 kB: .NonMoving
22868 kB: .NonMoving
23072 kB: .NonMoving
22836 kB: .NonMoving
19618 kB: .Zygote
19850 kB: .Zygote
19623 kB: .Zygote
19924 kB: .Zygote
19612 kB: .Zygote
Avg: 42745.4 kB
After:
Image size: 7462912 bytes
17440 kB: .NonMoving
16776 kB: .NonMoving
16804 kB: .NonMoving
17812 kB: .NonMoving
16820 kB: .NonMoving
18788 kB: .Zygote
18856 kB: .Zygote
19064 kB: .Zygote
18841 kB: .Zygote
18629 kB: .Zygote
3499 kB: .LinearAlloc
3408 kB: .LinearAlloc
3424 kB: .LinearAlloc
3600 kB: .LinearAlloc
3436 kB: .LinearAlloc
Avg: 39439.4 kB
No reflection performance changes.
Bug: 19264997
Bug: 17643507
Change-Id: I10c73a37913332080aeb978c7c94713bdfe4fe1c
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| bb87e0f1a52de656bc77cb01cb887e51a0e5198b |
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03-Apr-2015 |
Mathieu Chartier <mathieuc@google.com> |
Refactor and improve GC root handling
Changed GcRoot to use compressed references. Changed root visiting to
use virtual functions instead of function pointers. Changed root visting
interface to be an array of roots instead of a single root at a time.
Added buffered root marking helper to avoid dispatch overhead.
Root marking seems a bit faster on EvaluateAndApplyChanges due to batch
marking. Pause times unaffected.
Mips64 is untested but might work, maybe.
Before:
MarkConcurrentRoots: Sum: 67.678ms 99% C.I. 2us-664.999us Avg: 161.138us Max: 671us
After:
MarkConcurrentRoots: Sum: 54.806ms 99% C.I. 2us-499.986us Avg: 136.333us Max: 602us
Bug: 19264997
Change-Id: I0a71ebb5928f205b9b3f7945b25db6489d5657ca
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| e15ea086439b41a805d164d2beb07b4ba96aaa97 |
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10-Feb-2015 |
Hiroshi Yamauchi <yamauchi@google.com> |
Reserve bits in the lock word for read barriers.
This prepares for the CC collector to use the standard object header
model by storing the read barrier state in the lock word.
Bug: 19355854
Bug: 12687968
Change-Id: Ia7585662dd2cebf0479a3e74f734afe5059fb70f
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| 4add3b4fa38ec42bb3c71d01cf70bce8e9a9fb4e |
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15-Jan-2015 |
Lei Li <lei.l.li@intel.com> |
ART: clear dirty cards of alloc space for MS/CMS partial and full GCs
For MS/CMS partial and full GCs, we could clear the dirty cards of alloc
space when we process cards as we care about the dirty cards after GC
starts.
Change-Id: I1f9b32b20d75979387bc5d26b0cf9a256dcf20b6
Signed-off-by: Lei Li <lei.l.li@intel.com>
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| cb535da36915f9d10bec3880b46f1de1f7a69f22 |
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23-Jan-2015 |
Mathieu Chartier <mathieuc@google.com> |
Change AtomicStack to use StackReference
Previously used Object*, using StackReference saves memory on 64 bit
devices.
Bug: 12935052
Bug: 17643507
Change-Id: I035878690054eeeb24d655a900b8f26c837703ff
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| e34fa1df67fbe0173b4ea9abddcc3ae3d0537037 |
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14-Jan-2015 |
Mathieu Chartier <mathieuc@google.com> |
Print more info in MarkSweep::VerifyRoot
Refactored old root callback to use a new class called RootInfo.
RootInfo contains all the relevant info related to the root
associated with the callback. The MarkSweep::VerifyRoot function
now uses this info to print the StackVisitor's described location
if the GC root is of the type kRootJavaFrame.
Some other cleanup.
Example output:
E/art (12167): Tried to mark 0x123 not contained by any spaces
E/art (12167): Attempting see if it's a bad root
E/art (12167): Found invalid root: 0x123 with type RootJavaFrame
E/art (12167): Location=Visiting method
'void java.lang.Runtime.gc()' at dex PC 0xffffffff (native PC 0x0)
vreg=0
(cherry picked from commit 12f7423a2bb4bfab76700d84eb6d4338d211983a)
Bug: 18588862
Change-Id: Ic5a2781f704e931265ffb3621c2eab4b2e25f60f
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| 12f7423a2bb4bfab76700d84eb6d4338d211983a |
|
14-Jan-2015 |
Mathieu Chartier <mathieuc@google.com> |
Print more info in MarkSweep::VerifyRoot
Refactored old root callback to use a new class called RootInfo.
RootInfo contains all the relevant info related to the root
associated with the callback. The MarkSweep::VerifyRoot function
now uses this info to print the StackVisitor's described location
if the GC root is of the type kRootJavaFrame.
Some other cleanup.
Example output:
E/art (12167): Tried to mark 0x123 not contained by any spaces
E/art (12167): Attempting see if it's a bad root
E/art (12167): Found invalid root: 0x123 with type RootJavaFrame
E/art (12167): Location=Visiting method
'void java.lang.Runtime.gc()' at dex PC 0xffffffff (native PC 0x0)
vreg=0
Bug: 18588862
Change-Id: Ic5a2781f704e931265ffb3621c2eab4b2e25f60f
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| 277ccbd200ea43590dfc06a93ae184a765327ad0 |
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04-Nov-2014 |
Andreas Gampe <agampe@google.com> |
ART: More warnings
Enable -Wno-conversion-null, -Wredundant-decls and -Wshadow in general,
and -Wunused-but-set-parameter for GCC builds.
Change-Id: I81bbdd762213444673c65d85edae594a523836e5
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| 13735955f39b3b304c37d2b2840663c131262c18 |
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08-Oct-2014 |
Ian Rogers <irogers@google.com> |
stdint types all the way!
Change-Id: I4e4ef3a2002fc59ebd9097087f150eaf3f2a7e08
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| 2dbe627954fd78a3659ab3cd42d2ead5b4529441 |
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16-Sep-2014 |
Mathieu Chartier <mathieuc@google.com> |
Add runtime options for large object space
Adds the two following options:
Option -XX:LargeObjectSpace={freelist, map, disabled}
Option -XX:LargeObjectThreshold=size specifies the size for which
primitive arrays are allocated in the large object space.
Added handling for large object space == null in collectors.
Fixed an error in the mem map space where we didn't use the page
aligned size LOS for bytes allocated, this resutled in heaps appearing
a bit smaller than they should be.
Change-Id: I6f17c3534b59e7dc68cd375153e7a846799b3da4
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| f5997b4d3f889569d5a2b724d83d764bfbb8d106 |
|
20-Jun-2014 |
Mathieu Chartier <mathieuc@google.com> |
More advanced timing loggers.
The new timing loggers have lower overhead since they only push into
a vector. The new format has two types, a start timing and a stop
timing. You can thing of these as brackets associated with a
timestamp. It uses these to construct various statistics when needed,
such as: Total time, exclusive time, and nesting depth.
Changed PrettyDuration to have a default of 3 digits after the decimal
point.
Exaple of a GC dump with exclusive / total times and indenting:
I/art (23546): GC iteration timing logger [Exclusive time] [Total time]
I/art (23546): 0ms InitializePhase
I/art (23546): 0.305ms/167.746ms MarkingPhase
I/art (23546): 0ms BindBitmaps
I/art (23546): 0ms FindDefaultSpaceBitmap
I/art (23546): 0ms/1.709ms ProcessCards
I/art (23546): 0.183ms ImageModUnionClearCards
I/art (23546): 0.916ms ZygoteModUnionClearCards
I/art (23546): 0.610ms AllocSpaceClearCards
I/art (23546): 1.373ms AllocSpaceClearCards
I/art (23546): 0.305ms/6.318ms MarkRoots
I/art (23546): 2.106ms MarkRootsCheckpoint
I/art (23546): 0.153ms MarkNonThreadRoots
I/art (23546): 4.287ms MarkConcurrentRoots
I/art (23546): 43.461ms UpdateAndMarkImageModUnionTable
I/art (23546): 0ms/112.712ms RecursiveMark
I/art (23546): 112.712ms ProcessMarkStack
I/art (23546): 0.610ms/2.777ms PreCleanCards
I/art (23546): 0.305ms/0.855ms ProcessCards
I/art (23546): 0.153ms ImageModUnionClearCards
I/art (23546): 0.610ms ZygoteModUnionClearCards
I/art (23546): 0.610ms AllocSpaceClearCards
I/art (23546): 0.549ms AllocSpaceClearCards
I/art (23546): 0.549ms MarkRootsCheckpoint
I/art (23546): 0.610ms MarkNonThreadRoots
I/art (23546): 0ms MarkConcurrentRoots
I/art (23546): 0.610ms ScanGrayImageSpaceObjects
I/art (23546): 0.305ms ScanGrayZygoteSpaceObjects
I/art (23546): 0.305ms ScanGrayAllocSpaceObjects
I/art (23546): 1.129ms ScanGrayAllocSpaceObjects
I/art (23546): 0ms ProcessMarkStack
I/art (23546): 0ms/0.977ms (Paused)PausePhase
I/art (23546): 0.244ms ReMarkRoots
I/art (23546): 0.672ms (Paused)ScanGrayObjects
I/art (23546): 0ms (Paused)ProcessMarkStack
I/art (23546): 0ms/0.610ms SwapStacks
I/art (23546): 0.610ms RevokeAllThreadLocalAllocationStacks
I/art (23546): 0ms PreSweepingGcVerification
I/art (23546): 0ms/10.621ms ReclaimPhase
I/art (23546): 0.610ms/0.702ms ProcessReferences
I/art (23546): 0.214ms/0.641ms EnqueueFinalizerReferences
I/art (23546): 0.427ms ProcessMarkStack
I/art (23546): 0.488ms SweepSystemWeaks
I/art (23546): 0.824ms/9.400ms Sweep
I/art (23546): 0ms SweepMallocSpace
I/art (23546): 0.214ms SweepZygoteSpace
I/art (23546): 0.122ms SweepMallocSpace
I/art (23546): 6.226ms SweepMallocSpace
I/art (23546): 0ms SweepMallocSpace
I/art (23546): 2.144ms SweepLargeObjects
I/art (23546): 0.305ms SwapBitmaps
I/art (23546): 0ms UnBindBitmaps
I/art (23546): 0.275ms FinishPhase
I/art (23546): GC iteration timing logger: end, 178.971ms
Change-Id: Ia55b65609468f212b3cd65cda66b843da42be645
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| 10fb83ad7442c8cf3356a89ec918e0786f110981 |
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16-Jun-2014 |
Mathieu Chartier <mathieuc@google.com> |
Shared single GC iteration accounting for all GCs.
Previously, each garbage collector had data that was only used
during collection. Since only one collector can be running at any
given time, we can make this data be shared between all collectors.
This reduces memory usage since we don't need to have redundant
information for each GC types. Also reduced how much code is required
to sweep spaces.
Bug: 9969166
Change-Id: I31caf0ee4d572f75e0c66863fe7db12c08ae08e7
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| 52e4b43d62896b56f8c2bd041e528472bb4a0d8d |
|
10-Jun-2014 |
Mathieu Chartier <mathieuc@google.com> |
Add mark compact collector.
The mark compact collector is a 4 phase collection, doing a normal
full mark_sweep, calculating forwarding addresses of objects in the
from space, updating references of objects in the from space, and
moving the objects in the from space.
Support is diabled by default since it needs to have non movable
classes and field arrays. Performance numbers is around 50% as fast.
The main advantage that this has over semispace is that the worst
case memory usage is 50% since we only need one space isntead of two.
TODO: Make field arrays and classes movable. This causes complication
since Object::VisitReferences relies on these, so if we update the
fields of an object but another future object uses this object to
figure out what fields are reference fields it doesn't work.
Bug: 14059466
Change-Id: I661ed3b71ad4dde124ef80312c95696b4a5665a1
|