> The beginning of the RW region contains pointers to c++ vtables which are > always located at a fixed offset from the shared base address at runtime. > This offset can be calculated at dumptime and stored with the read-only > tables at the top of the RO region. As a further improvement, all the > pointers to RO tables are replaced with offsets as well. > > These changes will reduce the number of pointers in the RW and RO regions and > will allow for the relocation bitmap size optimizations to be more effective. > Verified with tier 1-5 tests.
Matias Saavedra Silva has updated the pull request with a new target base due to a merge or a rebase. The incremental webrev excludes the unrelated changes brought in by the merge/rebase. The pull request contains 12 additional commits since the last revision: - Merge branch 'master' into pointer_to_offset_8329418 - Ioi comments - Chris comments and cleanup - Merge branch 'master' into pointer_to_offset_8329418 - Cleanup - Corrected SA - Editing SA - Fixed dynamic dumping - Now works with -Xshare:on - Adjusted serialization - ... and 2 more: https://git.openjdk.org/jdk/compare/aaa2e59e...11f39483 ------------- Changes: - all: https://git.openjdk.org/jdk/pull/19107/files - new: https://git.openjdk.org/jdk/pull/19107/files/d40afef9..11f39483 Webrevs: - full: https://webrevs.openjdk.org/?repo=jdk&pr=19107&range=02 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=19107&range=01-02 Stats: 17065 lines in 289 files changed: 8650 ins; 5891 del; 2524 mod Patch: https://git.openjdk.org/jdk/pull/19107.diff Fetch: git fetch https://git.openjdk.org/jdk.git pull/19107/head:pull/19107 PR: https://git.openjdk.org/jdk/pull/19107
