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42 Commits

Author SHA1 Message Date
Jeremy Manson
66b65f9f88 8027364: PSScavenge accounts too large code section to StringTable unlink 
Correct timing measurement by modifying the scope of the GCTraceTime instance.

Reviewed-by: ysr, tamao
 2014-01-07 13:31:33 +01:00
Markus Grönlund
b1e3461fe5 8028128: Add a type safe alternative for working with counter based data 
Reviewed-by: dholmes, egahlin
 2013-11-23 12:25:13 +01:00
Jesper Wilhelmsson
11da59e506 8025853: Remove unnecessary uses of GenerationSizer 
Removed stray includes and some minor cleanup of GenerationSizer

Reviewed-by: tschatzl, jcoomes
 2013-10-03 17:16:23 +02:00
Staffan Larsen
718f3252f6 8005849: JEP 167: Event-Based JVM Tracing 
Co-authored-by: Karen Kinnear <karen.kinnear@oracle.com>
Co-authored-by: Bengt Rutisson <bengt.rutisson@oracle.com>
Co-authored-by: Calvin Cheung <calvin.cheung@oracle.com>
Co-authored-by: Erik Gahlin <erik.gahlin@oracle.com>
Co-authored-by: Erik Helin <erik.helin@oracle.com>
Co-authored-by: Jesper Wilhelmsson <jesper.wilhelmsson@oracle.com>
Co-authored-by: Keith McGuigan <keith.mcguigan@oracle.com>
Co-authored-by: Mattias Tobiasson <mattias.tobiasson@oracle.com>
Co-authored-by: Markus Gronlund <markus.gronlund@oracle.com>
Co-authored-by: Mikael Auno <mikael.auno@oracle.com>
Co-authored-by: Nils Eliasson <nils.eliasson@oracle.com>
Co-authored-by: Nils Loodin <nils.loodin@oracle.com>
Co-authored-by: Rickard Backman <rickard.backman@oracle.com>
Co-authored-by: Stefan Karlsson <stefan.karlsson@oracle.com>
Co-authored-by: Yekaterina Kantserova <yekaterina.kantserova@oracle.com>
Reviewed-by: acorn, coleenp, sla
 2013-06-10 11:30:51 +02:00
Stefan Karlsson
c39235c377 8015486: PSScavenge::is_obj_in_young is unnecessarily slow with UseCompressedOops 
Compare compressed oops to a compressed young gen boundary instead of uncompressing the oops before doing the young gen boundary check.

Reviewed-by: brutisso, jmasa
 2013-05-30 10:58:16 +02:00
Stefan Karlsson
c13149ab8d 8015422: Large performance hit when the StringTable is walked twice in Parallel Scavenge 
Combine the calls to StringTable::unlink and StringTable::oops_do in Parallel Scavenge.

Reviewed-by: pliden, coleenp
 2013-05-27 12:58:42 +02:00
Stefan Karlsson
2ccd92e927 8015268: NPG: 2.5% regression in young GC times on CRM Sales Opty 
Split SystemDictionary and ClassLoaderDataGraph root processing to help load balancing.

Reviewed-by: tschatzl, johnc
 2013-05-27 15:22:59 +02:00
Erik Helin
0f9e2457c5 8014277: Remove ObjectClosure as base class for BoolObjectClosure 
Reviewed-by: brutisso, tschatzl
 2013-05-17 11:57:05 +02:00
Tao Mao
87b3317478 8007763: Refactoring: split up compute_generation_free_space() into two functions for class PSAdaptiveSizePolicy 
Split up compute_generation_free_space() into two functions: compute_eden_space_size() + compute_old_gen_free_space(), each of which (if needed) can be reused without executing an overhead of the other.

Reviewed-by: jmasa, tschatzl
 2013-05-15 10:41:22 -07:00
Stefan Karlsson
f0ae855b07 8013132: Add a flag to turn off the output of the verbose verification code 
Reviewed-by: johnc, brutisso
 2013-04-24 20:13:37 +02:00
Harold Seigel
68f3dd76c9 7102489: RFE: cleanup jlong typedef on __APPLE__and _LLP64 systems 
Define jlong as long on all LP64 platforms and add JLONG_FORMAT macro.

Reviewed-by: dholmes, coleenp, mikael, kvn
 2013-01-17 10:25:16 -05:00
John Cuthbertson
9abdcd4a3c 8000831: Heap verification output incorrect/incomplete 
Restore non-silent output of heap verification.

Reviewed-by: ysr, brutisso, jmasa
 2012-10-15 10:02:42 -07:00
Jesper Wilhelmsson
3506d44c57 8000351: Tenuring threshold should be unsigned 
Change the flags and variables related to tenuring threshold to be unsigned

Reviewed-by: jmasa, johnc
 2012-10-03 20:31:41 +02:00
Jon Masamitsu
88ab075a6d 7199349: NPG: PS: Crash seen in jprt 
Reviewed-by: johnc
 2012-10-03 08:08:52 -07:00
Jon Masamitsu
5c58d27aac 6964458: Reimplement class meta-data storage to use native memory 
Remove PermGen, allocate meta-data in metaspace linked to class loaders, rewrite GC walking, rewrite and rename metadata to be C++ classes

Co-authored-by: Stefan Karlsson <stefan.karlsson@oracle.com>
Co-authored-by: Mikael Gerdin <mikael.gerdin@oracle.com>
Co-authored-by: Tom Rodriguez <tom.rodriguez@oracle.com>
Reviewed-by: jmasa, stefank, never, coleenp, kvn, brutisso, mgerdin, dholmes, jrose, twisti, roland
 2012-09-01 13:25:18 -04:00
Zhengyu Gu
a39b17624a 6995781: Native Memory Tracking (Phase 1) 
7151532: DCmd for hotspot native memory tracking

Implementation of native memory tracking phase 1, which tracks VM native memory usage, and related DCmd

Reviewed-by: acorn, coleenp, fparain
 2012-06-28 17:03:16 -04:00
Bengt Rutisson
eba9965d54 7166894: Add gc cause to GC logging for all collectors 
Reviewed-by: mgerdin, johnc
 2012-05-15 10:25:06 +02:00
John Coomes
6827f384c9 7146343: PS invoke methods should indicate the type of gc done 
Reviewed-by: stefank, jmasa
 2012-02-16 13:12:25 -08:00
Igor Veresov
47d1b9ee33 7144296: PS: Optimize nmethods processing 
Prunes scavenge roots in code list every young GC, promote objects directly pointed by the code immediately

Reviewed-by: johnc, jcoomes
 2012-02-10 17:40:20 -08:00
Tom Rodriguez
5a41427b37 7141200: log some interesting information in ring buffers for crashes 
Reviewed-by: kvn, jrose, kevinw, brutisso, twisti, jmasa
 2012-02-01 07:59:01 -08:00
Jon Masamitsu
15070123fa 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads 
Select number of GC threads dynamically based on heap usage and number of Java threads

Reviewed-by: johnc, ysr, jcoomes
 2011-08-09 10:16:01 -07:00
John Cuthbertson
1b62d10b4b 6484982: G1: process references during evacuation pauses 
G1 now uses two reference processors - one is used by concurrent marking and the other is used by STW GCs (both full and incremental evacuation pauses). In an evacuation pause, the reference processor is embedded into the closures used to scan objects. Doing so causes causes reference objects to be 'discovered' by the reference processor. At the end of the evacuation pause, these discovered reference objects are processed - preserving (and copying) referent objects (and their reachable graphs) as appropriate.

Reviewed-by: ysr, jwilhelm, brutisso, stefank, tonyp
 2011-09-22 10:57:37 -07:00
Frederic Parain
b38843c8d9 7036199: Adding a notification to the implementation of GarbageCollectorMXBeans 
Add a notification to the GarbageCollectorMXBeans

Reviewed-by: acorn, mchung
 2011-05-12 10:30:11 -07:00
John Coomes
fe899cc10d 6962931: move interned strings out of the perm gen 
Reviewed-by: never, coleenp, ysr, jwilhelm
 2011-03-22 13:36:33 -07:00
Y. Srinivas Ramakrishna
b4b287e7ac 6668573: CMS: reference processing crash if ParallelCMSThreads > ParallelGCThreads 
Use _max_num_q = max(discovery_degree, processing_degree), and let balance_queues() redistribute from discovery_degree to processing_degree of queues. This should also allow a more dynamic and flexible parallelism policy in the future.

Reviewed-by: jmasa, johnc
 2011-03-17 10:32:46 -07:00
Y. Srinivas Ramakrishna
41bf31bff4 6807801: CMS: could save/restore fewer header words during scavenge 
Age bits need not enter the mark-word preservation calculus; also affected, in addition to CMS, per CR synopsis above, were ParNew (but not DefNew), ParallelScavenge and G1, albeit to a lesser degree than CMS.

Reviewed-by: tonyp, johnc
 2010-12-17 23:41:31 -08:00
Stefan Karlsson
8006fe8f75 6989984: Use standard include model for Hospot 
Replaced MakeDeps and the includeDB files with more standardized solutions.

Reviewed-by: coleenp, kvn, kamg
 2010-11-23 13:22:55 -08:00
John Coomes
1cdd538ea5 6423256: GC stacks should use a better data structure 
6942771: SEGV in ParScanThreadState::take_from_overflow_stack

Reviewed-by: apetrusenko, ysr, pbk
 2010-09-28 15:56:15 -07:00
Antonios Printezis
38ab95c64b 6962589: remove breadth first scanning code from parallel gc 
Remove the breadth-first copying order from ParallelScavenge and use depth-first by default.

Reviewed-by: jcoomes, ysr, johnc
 2010-07-22 10:27:41 -04:00
John Coomes
e8dbd32204 6957084: simplify TaskQueue overflow handling 
Reviewed-by: ysr, jmasa
 2010-07-01 21:40:45 -07:00
Erik Trimble
ba7c173659 6941466: Oracle rebranding changes for Hotspot repositories 
Change all the Sun copyrights to Oracle copyright

Reviewed-by: ohair
 2010-05-27 19:08:38 -07:00
Jon Masamitsu
f5197d0d36 6858496: Clear all SoftReferences before an out-of-memory due to GC overhead limit 
Ensure a full GC that clears SoftReferences before throwing an out-of-memory

Reviewed-by: ysr, jcoomes
 2010-04-13 13:52:10 -07:00
John R Rose
e261aecad8 6863023: need non-perm oops in code cache for JSR 292 
Make a special root-list for those few nmethods which might contain non-perm oops.

Reviewed-by: twisti, kvn, never, jmasa, ysr
 2009-09-15 21:53:47 -07:00
Xiomara Jayasena
2be2e027b0 6814575: Update copyright year 
Update copyright for files that have been modified in 2009, up to 03/09

Reviewed-by: katleman, tbell, ohair
 2009-03-09 13:28:46 -07:00
Jon Masamitsu
3b5d6a04dd 6690928: Use spinning in combination with yields for workstealing termination 
Substitute a spin loop for most calls to yield() to reduce the stress on the system.

Reviewed-by: tonyp
 2009-02-08 13:18:01 -08:00
Y. Srinivas Ramakrishna
16aa57cb4b 6778647: snap(), snap_policy() should be renamed setup(), setup_policy() 
Renamed Reference{Policy,Pocessor} methods from snap{,_policy}() to setup{,_policy}()

Reviewed-by: apetrusenko
 2008-12-01 23:25:24 -08:00
Y. Srinivas Ramakrishna
7d7cf3f8af 6684579: SoftReference processing can be made more efficient 
For current soft-ref clearing policies, we can decide at marking time if a soft-reference will definitely not be cleared, postponing the decision of whether it will definitely be cleared to the final reference processing phase. This can be especially beneficial in the case of concurrent collectors where the marking is usually concurrent but reference processing is usually not.

Reviewed-by: jmasa
 2008-11-20 16:56:09 -08:00
Jon Masamitsu
b8633a3b01 Merge 2008-07-28 15:30:23 -07:00
Jon Masamitsu
18dbebd143 6672698: mangle_unused_area() should not remangle the entire heap at each collection 
Maintain a high water mark for the allocations in a space and mangle only up to that high water mark.

Reviewed-by: ysr, apetrusenko
 2008-07-09 15:08:55 -07:00
Xiomara Jayasena
c96a95c4b8 6719955: Update copyright year 
Update copyright year for files that have been modified in 2008

Reviewed-by: ohair, tbell
 2008-07-02 12:55:16 -07:00
Coleen Phillimore
4a831d45f0 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes 
Compressed oops in instances, arrays, and headers. Code contributors are coleenp, phh, never, swamyv

Reviewed-by: jmasa, kamg, acorn, tbell, kvn, rasbold
 2008-04-13 17:43:42 -04:00
J. Duke
8153779ad3 Initial load 2007-12-01 00:00:00 +00:00