> Hi, Please review > Windows mapping for file into memory could not happen to reserved memory. > In mapping CDS archive we first reserve enough memory then before mapping, > release them. For cds archive and using class space, need split the whole > space into two, that is, release the whole reserved space and do reservation > to the two split spaces again, which is problematic that there is possibility > other thread or system can kick in to take the released space. > The fix is the first step of two steps: > 1) Do not split reserved memory; > 2) Remove splitting memory. > This fix is first step, for Windows and use requested mapping address, > reserved for cds archive and ccs on a contiguous space separately, so there > is no need to call split. If any reservation failed, release them, go to > other way, but do not do the 'real' split either. For Windows (and using > class space), the reserved space will be released anyway. > > Tests:tier1-5,tier7
Yumin Qi has updated the pull request incrementally with 32 additional commits since the last revision: - Add total_space_rs, total reserved space to release_reserved_spaces and reserve_address_space_for_archives, made changes to check failed output on test. - 8253762: JFR: getField(String) should be able to access subfields Reviewed-by: mgronlun - 8257670: sun/security/ssl/SSLSocketImpl/SSLSocketLeak.java reports leaks Reviewed-by: jnimeh - 8257796: [TESTBUG] TestUseSHA512IntrinsicsOptionOnSupportedCPU.java fails on x86_32 Reviewed-by: kvn - 8257211: C2: Enable call devirtualization during post-parse phase Reviewed-by: kvn, neliasso, thartmann - 8257572: Deprecate the archaic signal-chaining interfaces: sigset and signal Reviewed-by: ihse, alanb, dcubed, erikj - 8257718: LogCompilation: late_inline doesnt work right for JDK 8 logs Reviewed-by: redestad, kvn - 8257799: Update JLS cross-references in java.compiler Reviewed-by: jjg - 8254939: macOS: unused function 'replicate4_imm' Reviewed-by: redestad, thartmann - 8257805: Add compiler/blackhole tests to tier1 Reviewed-by: kvn - ... and 22 more: https://git.openjdk.java.net/jdk/compare/dd9ae050...f7958306 ------------- Changes: - all: https://git.openjdk.java.net/jdk/pull/1657/files - new: https://git.openjdk.java.net/jdk/pull/1657/files/dd9ae050..f7958306 Webrevs: - full: https://webrevs.openjdk.java.net/?repo=jdk&pr=1657&range=02 - incr: https://webrevs.openjdk.java.net/?repo=jdk&pr=1657&range=01-02 Stats: 8052 lines in 156 files changed: 4548 ins; 2755 del; 749 mod Patch: https://git.openjdk.java.net/jdk/pull/1657.diff Fetch: git fetch https://git.openjdk.java.net/jdk pull/1657/head:pull/1657 PR: https://git.openjdk.java.net/jdk/pull/1657
