1. 05 9月, 2014 1 次提交
  2. 28 8月, 2014 1 次提交
    • T
      8054808: Bitmap verification sometimes fails after Full GC aborts concurrent mark. · 35d4d219
      tschatzl 提交于
      Summary: The verification code that checked whether no bitmap mark had been found re-read HeapRegion::end() after the check on the bitmap. Concurrent humongous object allocation could have changed HeapRegion::end() in the meantime. Fix this by using the actual end of the region instead of HeapRegion::end() for comparison.
      Reviewed-by: brutisso, jmasa
      35d4d219
  3. 26 8月, 2014 1 次提交
  4. 19 8月, 2014 1 次提交
  5. 07 7月, 2014 1 次提交
  6. 26 6月, 2014 2 次提交
  7. 25 6月, 2014 2 次提交
  8. 23 5月, 2014 1 次提交
    • D
      8037816: Fix for 8036122 breaks build with Xcode5/clang · ed4b64df
      drchase 提交于
      8043029: Change 8037816 breaks HS build with older GCC versions which don't support diagnostic pragmas
      8043164: Format warning in traceStream.hpp
      Summary: Backport of main fix + two corrections, enables clang compilation, turns on format attributes, corrects/mutes warnings
      Reviewed-by: kvn, coleenp, iveresov, twisti
      ed4b64df
  9. 24 3月, 2014 1 次提交
  10. 28 2月, 2014 1 次提交
    • J
      8036025: Sort the freelist in order to shrink the heap · dc597682
      jwilhelm 提交于
      Summary: The free list is being maintained in a sorted fashion and old and humongous regions are allocated from the bottom of the heap while young regions are allocated at the top.
      Reviewed-by: tschatzl, mgerdin
      Contributed-by: jesper.wilhelmsson@oracle.com, staffan.friberg@oracle.com
      dc597682
  11. 11 9月, 2013 1 次提交
    • T
      8010722: assert: failed: heap size is too big for compressed oops · 95a96a89
      tschatzl 提交于
      Summary: Use conservative assumptions of required alignment for the various garbage collector components into account when determining the maximum heap size that supports compressed oops. Using this conservative value avoids several circular dependencies in the calculation.
      Reviewed-by: stefank, dholmes
      95a96a89
  12. 30 8月, 2013 1 次提交
  13. 15 8月, 2013 1 次提交
    • J
      7145569: G1: optimize nmethods scanning · d5c439d7
      johnc 提交于
      Summary: Add a list of nmethods to the RSet for a region that contain references into the region. Skip scanning the code cache during root scanning and scan the nmethod lists during RSet scanning instead.
      Reviewed-by: tschatzl, brutisso, mgerdin, twisti, kvn
      d5c439d7
  14. 24 1月, 2013 1 次提交
  15. 19 9月, 2012 1 次提交
  16. 02 9月, 2012 1 次提交
  17. 20 7月, 2012 1 次提交
  18. 26 4月, 2012 1 次提交
    • J
      7143490: G1: Remove HeapRegion::_top_at_conc_mark_count · 7b83234d
      johnc 提交于
      Summary: Removed the HeapRegion::_top_at_conc_mark_count field. It is no longer needed as a result of the changes for 6888336 and 7127706. Refactored the closures that finalize and verify the liveness counting data so that common functionality was placed into a base class.
      Reviewed-by: brutisso, tonyp
      7b83234d
  19. 19 4月, 2012 1 次提交
    • T
      7145441: G1: collection set chooser-related cleanup · 0c52c8e5
      tonyp 提交于
      Summary: Cleanup of the CSet chooser class: standardize on uints for region num and indexes (instead of int, jint, etc.), make the method / field naming style more consistent, remove a lot of dead code.
      Reviewed-by: johnc, brutisso
      0c52c8e5
  20. 18 4月, 2012 1 次提交
  21. 16 4月, 2012 1 次提交
  22. 06 4月, 2012 1 次提交
  23. 16 2月, 2012 1 次提交
    • T
      7132029: G1: mixed GC phase lasts for longer than it should · 33a49849
      tonyp 提交于
      Summary: Revamp of the mechanism that chooses old regions for inclusion in the CSet. It simplifies the code and introduces min and max bounds on the number of old regions added to the CSet at each mixed GC to avoid pathological cases. It also ensures that when we do a mixed GC we'll always find old regions to add to the CSet (i.e., it eliminates the case where a mixed GC will collect no old regions which can happen today).
      Reviewed-by: johnc, brutisso
      33a49849
  24. 12 1月, 2012 1 次提交
    • J
      6484965: G1: piggy-back liveness accounting phase on marking · f13c0dfe
      johnc 提交于
      Summary: Remove the separate counting phase of concurrent marking by tracking the amount of marked bytes and the cards spanned by marked objects in marking task/worker thread local data structures, which are updated as individual objects are marked.
      Reviewed-by: brutisso, tonyp
      f13c0dfe
  25. 11 1月, 2012 1 次提交
    • T
      6888336: G1: avoid explicitly marking and pushing objects in survivor spaces · a6a74fef
      tonyp 提交于
      Summary: This change simplifies the interaction between GC and concurrent marking. By disabling survivor spaces during the initial-mark pause we don't need to propagate marks of objects we copy during each GC (since we never need to copy an explicitly marked object).
      Reviewed-by: johnc, brutisso
      a6a74fef
  26. 24 12月, 2011 1 次提交
  27. 18 11月, 2011 1 次提交
    • J
      7112743: G1: Reduce overhead of marking closure during evacuation pauses · 9ee12139
      johnc 提交于
      Summary: Parallelize the serial code that was used to mark objects reachable from survivor objects in the collection set. Some minor improvments in the timers used to track the freeing of the collection set along with some tweaks to PrintGCDetails.
      Reviewed-by: tonyp, brutisso
      9ee12139
  28. 24 10月, 2011 1 次提交
    • J
      7096030: G1: PrintGCDetails enhancements · 15519f74
      johnc 提交于
      7102445: G1: Unnecessary Resource allocations during RSet scanning
      Summary: Add a new per-worker thread line in the PrintGCDetails output. GC Worker Other is the difference between the elapsed time for the parallel phase of the evacuation pause and the sum of the times of the sub-phases (external root scanning, mark stack scanning, RSet updating, RSet scanning, object copying, and termination) for that worker. During RSet scanning, stack allocate DirtyCardToOopClosure objects; allocating these in a resource area was causing abnormally high GC Worker Other times while the worker thread freed ResourceArea chunks.
      Reviewed-by: tonyp, jwilhelm, brutisso
      15519f74
  29. 20 10月, 2011 1 次提交
  30. 05 10月, 2011 1 次提交
  31. 24 9月, 2011 1 次提交
  32. 23 9月, 2011 1 次提交
    • J
      6484982: G1: process references during evacuation pauses · 9c3adbcc
      johnc 提交于
      Summary: 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
      9c3adbcc
  33. 12 8月, 2011 1 次提交
  34. 19 11月, 2011 1 次提交
  35. 15 6月, 2011 1 次提交
    • J
      7004681: G1: Extend marking verification to Full GCs · 0e040a45
      johnc 提交于
      Summary: Perform a heap verification after the first phase of G1's full GC using objects' mark words to determine liveness. The third parameter of the heap verification routines, which was used in G1 to determine which marking bitmap to use in liveness calculations, has been changed from a boolean to an enum with values defined for using the mark word, and the 'prev' and 'next' bitmaps.
      Reviewed-by: tonyp, ysr
      0e040a45
  36. 11 6月, 2011 1 次提交
    • T
      7045330: G1: Simplify/fix the HeapRegionSeq class · f122f55f
      tonyp 提交于
      7042285: G1: native memory leak during humongous object allocation
      6804436: G1: heap region indices should be size_t
      Summary: A series of fixes and improvements to the HeapRegionSeq class: a) replace the _regions growable array with a standard C array, b) avoid de-allocating / re-allocating HeapRegion instances when the heap shrinks / grows (fix for 7042285), c) introduce fast method to map address to HeapRegion via a "biased" array pointer, d) embed the _hrs object in G1CollectedHeap, instead of pointing to it via an indirection, e) assume that all the regions added to the HeapRegionSeq instance are contiguous, f) replace int's with size_t's for indexes (and expand that to HeapRegion as part of 6804436), g) remove unnecessary / unused methods, h) rename a couple of fields (_alloc_search_start and _seq_bottom), i) fix iterate_from() not to always start from index 0 irrespective of the region passed to it, j) add a verification method to check the HeapRegionSeq assumptions, k) always call the wrappers for _hrs.iterate(), _hrs_length(), and _hrs.at() from G1CollectedHeap, not those methods directly, and l) unify the code that expands the sequence (by either re-using or creating a new HeapRegion) and make it robust wrt to a HeapRegion allocation failing.
      Reviewed-by: stefank, johnc, brutisso
      f122f55f
  37. 30 4月, 2011 1 次提交
    • T
      7035144: G1: nightly failure: Non-dirty cards in region that should be dirty... · 086cc9b4
      tonyp 提交于
      7035144: G1: nightly failure: Non-dirty cards in region that should be dirty (failures still exist...)
      Summary: We should only undirty cards after we decide that they are not on a young region, not before. The fix also includes improvements to the verify_dirty_region() method which print out which cards were not found dirty.
      Reviewed-by: johnc, brutisso
      086cc9b4
  38. 05 3月, 2011 1 次提交