| eb6c7c23a8065af665e71f3408980bacd8ecc529 |
|
05-Feb-2015 |
Igor Murashkin <iam@google.com> |
art: Try to fix parsed_options_test on the build server
(It works fine locally because environment variables are defined
differently)
Also some minor cleanup elsewhere pointed out in the previous code
review.
Change-Id: I80650d2be6ce467b838db85eb130a0020d7c1480
|
| aaebaa0121be3b9d9f13630585304482cbcaeb4b |
|
26-Jan-2015 |
Igor Murashkin <iam@google.com> |
art: Refactor RuntimeOptions/ParsedOptions
Refactor the RuntimeOptions to be a
type-safe map (VariantMap, see runtime_options.h) and the ParsedOptions
to delegate the parsing to CmdlineParser (see cmdline/cmdline_parser.h).
This is the start of a command line parsing refactor, and may include
more in the future (dex2oat, patchoat, etc).
For more details of the command line parsing generator usage see cmdline/README.md
Change-Id: Ic67c6bca5e1f33bf2ec60e2e3ff8c366bab91563
|
| f37a88b8e6db6c587fa449a12e40cb46be1689fc |
|
10-Jul-2014 |
Zuo Wang <zuo.wang@intel.com> |
ART: Compacting ROS/DlMalloc spaces with semispace copy GC
Current semispace copy GC is mainly associated with bump pointer
spaces. Though it squeezes fragmentation most aggressively, an extra
copy is required to re-establish the data in the ROS/DlMalloc space to allow
CMS GCs to happen afterwards. As semispace copy GC is still stop-the-world,
this not only introduces unnecessary overheads but also longer response time.
Response time indicates the time duration between the start of transition
request and the start of transition animation, which may impact the user
experience.
Using semispace copy GC to compact the data in a ROS space to another ROS(or
DlMalloc space to another DlMalloc) space solves this problem. Although it
squeezes less fragmentation, CMS GCs can run immediately after the compaction.
We apply this algorithm in two cases:
1) Right before throwing an OOM if -XX:EnableHSpaceCompactForOOM is passed in
as true.
2) When app is switched to background if the -XX:BackgroundGC option has value
HSpaceCompact.
For case 1), OOMs are significantly delayed in the harmony GC stress test,
with compaction ratio up to 0.87. For case 2), compaction ratio around 0.5 is
observed in both built-in SMS and browser. Similar results have been obtained
on other apps as well.
Change-Id: Iad9eabc6d046659fda3535ae20f21bc31f89ded3
Signed-off-by: Wang, Zuo <zuo.wang@intel.com>
Signed-off-by: Chang, Yang <yang.chang@intel.com>
Signed-off-by: Lei Li <lei.l.li@intel.com>
Signed-off-by: Lin Zang <lin.zang@intel.com>
|
| 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
|
| d5307ec41c8344be0c32273ec4f574064036187d |
|
28-Mar-2014 |
Hiroshi Yamauchi <yamauchi@google.com> |
An empty collector skeleton for a read barrier-based collector.
Bug: 12687968
Change-Id: Ic2a3a7b9943ca64e7f60f4d6ed552a316ea4a6f3
|
| d5a89ee74c00bd24a34b6e795828a0b86842630f |
|
31-Jan-2014 |
Mathieu Chartier <mathieuc@google.com> |
Fix race conditions caused by StartGC.
Race1: Heap trimming could happen when we were transitioning the heap.
This caused the space to get deleted in the middle of the trim.
Race2: IncrementDisableCompactingGC needed to WaitForConcurrentGC if
we were running a moving GC or about to starting a moving GC.
Race3: The logic for whether or not we had a compacting GC was
calculated before StartGC in CollectGarbageInternal. This could cause
us to get blocked waiting for the GC to complete and come out of the
wait with a new collector_type_ due to a heap transition.
Change-Id: I07c36ae5df1820e9cca70cf239e46175c1eb9575
|
| 6f4ffe41649f1e6381e8cda087ad3749206806e5 |
|
13-Jan-2014 |
Hiroshi Yamauchi <yamauchi@google.com> |
Improve the generational mode.
- Turn the compile-time flags for generational mode into a command
line flag.
- In the generational mode, always collect the whole heap, as opposed
to the bump pointer space only, if a collection is an explicit,
native allocation-triggered or last attempt one.
Change-Id: I7a14a707cc47e6e3aa4a3292db62533409f17563
|
| 7bf82af01ec250a4ed2cee03a0e51d179fa820f9 |
|
07-Dec-2013 |
Mathieu Chartier <mathieuc@google.com> |
Fix memory usage regression and clean up collector changing code.
Memory usage regressed since we didn't properly update
concurrent_start_bytes_ when changing collectors.
Bug: 12034247
Change-Id: I1c69e71cd2919e0d3bf75485a4ac0b0aeca59278
|
| 7410f29b4dae223befac036ea567d7f33351dad1 |
|
24-Nov-2013 |
Mathieu Chartier <mathieuc@google.com> |
Fix dumpsys meminfo <pid>.
Added a case for BumpPointerSpaces. Confirmed working non-debug.
Should also work in debug builds.
Bug: 11830794
Change-Id: I12053ff16eec403dcd4a780e13095e3212a77132
|
| 0de9f73afe3e835b63f2ee0c1416930656449f3f |
|
23-Nov-2013 |
Mathieu Chartier <mathieuc@google.com> |
Add -xGc: MS, CMS, SS options to specify which GC to use.
Can be used for running tests or benchmarks with semispace,
marksweep or concurrent marksweep.
Change-Id: Ic9ab1220150f2c7c9c30df4ffee45b9d303094b3
|