The following contains a comparison between 7u60 and 8 of the patches needed for the nmethod changes.
| Title | 7u60 bug ID | 7u60 webrev | 8 bug ID | 8 webrev | Notes |
|---|---|---|---|---|---|
| Add new flag for verifying the heap during startup | 8029486 | webrev | 8011343 | webrev | The webrev tool did not recognize the moved and modified file, hence the large difference in the diff. |
| Add a flag to turn off the output of the verbose verification code | 8029487 | webrev | 8013132 | webrev | |
| G1: Add remembered set size information to output of G1PrintRegionLivenessInfo | 8028187 | webrev | 8014240 | webrev | |
| G1: G1SummarizeRSetStats output on Linux needs improvement | 8028186 | webrev | 8013895 | webrev | |
| G1: Verification after a full GC is incorrectly placed. | 8029596 | webrev | 8015244 | webrev | |
| G1: optimize nmethods scanning | 8025423 | webrev | 7145569 | webrev | Main change. See notes in the openjdk mailing list thread. Could not find original webrev with the final version, so using diff from mercurial. |
| G1: G1CollectedHeap::mark_strong_code_roots() needs to handle ParallelGCThreads=0 | 8028193 | webrev | 8023145 | webrev | |
| G1: improve remembered set summary information by providing per region type information | 8028188 | webrev | 8014078 | webrev | |
| G1: assert "assert(thread < _num_vtimes) failed: just checking" fails when G1ConcRefinementThreads > ParallelGCThreads | 8028189 | webrev | 8025441 | webrev | |
| -XX:+G1SummarizeRSetStats can result in wrong exit code and crash | 8028190 | webrev | 8026848 | webrev | |
| assert(!hr->isHumongous()) failed: code root in humongous region? | 8028191 | webrev | 8027756 | webrev | |
| Test gc/g1/TestPrintRegionRememberedSetInfo.java fails with "test result: Error. No action after @build" | 8029488 | webrev | 8020123 | webrev |