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84 commits

Author SHA1 Message Date
Erik Helin
977d1f7a5d 8038934: Remove prefix allocated_ from methods and variables in Metaspace 
Reviewed-by: jmasa, coleenp
 2014-03-31 17:09:38 +02:00
Jon Masamitsu
8c7d064ee8 7098155: Resize young gen at full collections for UseParallelGC 
Reviewed-by: tschatzl
 2014-03-05 07:34:35 -08:00
Jesper Wilhelmsson
81ba2e32c0 8025856: Fix typos in the GC code 
Fix about 440 typos in comments in the VM code

Reviewed-by: mgerdin, tschatzl, coleenp, kmo, jcoomes
 2014-01-23 14:47:23 +01:00
Stefan Johansson
5f4d0e9c25 8028993: Full collections with ParallelScavenge slower in JDK 8 compared to 7u40 
Reducing the number of calls to follow_class_loader to speed up the marking phase. Also removed some unnecessary calls to adjust_klass.

Reviewed-by: stefank, jmasa, mgerdin
 2013-12-10 10:31:00 +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
John Coomes
de314e391b 6725714: par compact - add a table to speed up bitmap searches 
Reviewed-by: jmasa, tschatzl
 2013-05-30 13:04:51 -07:00
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
Tao Mao
1e80919f4c 8007762: Rename a bunch of methods in size policy across collectors 
Rename: compute_generations_free_space() = compute_eden_space_size() + compute_old_gen_free_space(); update related logging messages

Reviewed-by: jmasa, johnc, tschatzl, brutisso
 2013-05-22 11:11:47 -07:00
Tao Mao
47c64fb0c3 7186737: Unable to allocate bit maps or card tables for parallel gc for the requested heap 
Print helpful error message when VM aborts due to inability of allocating bit maps or card tables

Reviewed-by: jmasa, stefank
 2013-05-20 10:44:33 -07:00
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
Bengt Rutisson
d3a0a48fbb 8014339: Improve assert and remove some dead code from parMarkBitMap.hpp/cpp 
Reviewed-by: stefank, tschatzl
 2013-05-13 14:09:05 +02:00
Stefan Karlsson
ad20a6bd76 8013160: NPG: Remove unnecessary mark stack draining after CodeCache::do_unloading 
Reviewed-by: coleenp, mgerdin
 2013-04-26 10:40:36 +02:00
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
Jon Masamitsu
d72b516201 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions 
Reviewed-by: mgerdin, coleenp
 2013-02-12 14:15:45 -08:00
Stefan Karlsson
bdf829cf3e 8012687: Remove unused is_root checks and closures 
Reviewed-by: tschatzl, jmasa
 2013-04-22 20:27:36 +02:00
Stefan Karlsson
e96efdaa1a 8011872: Include Bit Map addresses in the hs_err files 
Reviewed-by: brutisso, jmasa
 2013-04-10 14:26:49 +02:00
Tao Mao
7cb614b0e5 8004132: SerialGC: ValidateMarkSweep broken when running GCOld 
Remove bit-rotten ValidateMarkSweep functionality and flag.

Reviewed-by: johnc, jmasa
 2013-01-02 11:32:41 -08:00
Stefan Karlsson
3c2f3a321a 8003720: NPG: Method in interpreter stack frame can be deallocated 
Pass down a closure during root scanning to keep the class of the method alive.

Reviewed-by: coleenp, jcoomes
 2012-11-27 10:13:20 +01:00
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
Bengt Rutisson
fcae0353d2 7200470: KeepAliveClosure not needed in CodeCache::do_unloading 
Removed the unused keep_alive parameter

Reviewed-by: stefank, dholmes, kamg, coleenp
 2012-09-25 14:58:12 +02:00
Jon Masamitsu
f6cc90e927 7199923: NPG: tools/javac/T7093325.java timeout 
Reviewed-by: stefank, coleenp, kvn
 2012-09-20 12:18:23 -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
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
John Cuthbertson
870bea622a 7117303: VM uses non-monotonic time source and complains that it is non-monotonic 
Replaces calls to os::javaTimeMillis(), which does not (and cannot) guarantee monotonicity, in GC code to an equivalent expression that uses os::javaTimeNanos(). os::javaTimeNanos is guaranteed monotonically non-decreasing if the underlying platform provides a monotonic time source. Changes in OS files are to make use of the newly defined constants in globalDefinitions.hpp.

Reviewed-by: dholmes, ysr
 2011-12-19 10:02:05 -08:00
Jon Masamitsu
71ed60ac69 7112997: Remove obsolete code ResetObjectsClosure and VerifyUpdateClosure 
Remove obsolete code.

Reviewed-by: brutisso, ysr, jcoomes
 2011-11-22 14:59:34 -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
Stefan Karlsson
5b6ba4e611 7085906: Replace the permgen allocated sentinelRef with a self-looped end 
Remove the sentinelRef and let the last Reference in a discovered chain point back to itself.

Reviewed-by: ysr, jmasa
 2011-09-01 16:18:17 +02:00
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
f9b80cdc1c 6841742: par compact - remove unused/unsupported options 
Ignore UseParallel{OldGCDensePrefix,OldGCCompacting,DensePrefixUpdate}

Reviewed-by: jwilhelm, brutisso
 2011-04-07 17:16:20 -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
Coleen Phillimore
7b4f8073f0 6990754: Use native memory and reference counting to implement SymbolTable 
Move symbols from permgen into C heap and reference count them

Reviewed-by: never, acorn, jmasa, stefank
 2011-01-27 16:11:27 -08:00
Keith McGuigan
272d7eaffc 7012505: BreakpointWithFullGC.sh fails with Internal Error (src/share/vm/oops/methodOop.cpp:220) 
Rebuild breakpoint cache at gc_epilogue instead of during oops_do

Reviewed-by: dcubed, ysr, coleenp
 2011-01-19 13:51:53 -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
Jon Masamitsu
28e56b8970 6984287: Regularize how GC parallel workers are specified 
Associate number of GC workers with the workgang as opposed to the task.

Reviewed-by: johnc, ysr
 2010-09-20 14:38:38 -07:00
John Coomes
e8dbd32204 6957084: simplify TaskQueue overflow handling 
Reviewed-by: ysr, jmasa
 2010-07-01 21:40:45 -07:00
John R Rose
d6a9b93b5a Merge 2010-06-02 22:45:42 -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
Vladimir Kozlov
cc18a50e59 6916623: Align object to 16 bytes to use Compressed Oops with java heap up to 64Gb 
Added new product ObjectAlignmentInBytes flag to control object alignment.

Reviewed-by: twisti, ysr, iveresov
 2010-05-27 18:01:56 -07:00
John Coomes
7e76feaf42 6888953: some calls to function-like macros are missing semicolons 
Reviewed-by: pbk, kvn
 2009-10-11 16:19:25 -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 Coomes
4f82340476 4396719: Mark Sweep stack overflow on deeply nested Object arrays 
Use an explicit stack for object arrays and process them in chunks.

Reviewed-by: iveresov, apetrusenko
 2010-03-03 14:48:26 -08:00
John R Rose
f34acd6601 Merge 2009-09-30 13:25:39 -07:00