> CDS cannot handle large number of classes, because `ClassLoader` data > structures get too large for CDS archival. The new test captures such an > occasion. We do `clear()`-s, but that is not enough to trim the backing > storages for the affected collections. > > In contrast with previous attempts to fix this > (https://github.com/openjdk/jdk/pull/21797 and my VM-side field overwrite), > we can just reinitialize the fields using `Unsafe`, which bypasses normal > `final` field write restriction. `ClassLoader` already does a similar thing > nearby! This allows us to stay fully in Java, and makes the patch fairly > straightforward. > > Additional testing: > - [x] Linux x86_64 server fastdebug, new test reliably fails without the > fix, passes with it > - [x] Linux x86_64 server fastdebug, `runtime/cds`
Aleksey Shipilev 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 four additional commits since the last revision: - Minor touchup - Merge branch 'master' into JDK-8342283-cds-many-classes - Adjust TEST.groups - Fix ------------- Changes: - all: https://git.openjdk.org/jdk/pull/24877/files - new: https://git.openjdk.org/jdk/pull/24877/files/97ab42b6..d45ecd2f Webrevs: - full: https://webrevs.openjdk.org/?repo=jdk&pr=24877&range=01 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=24877&range=00-01 Stats: 5902 lines in 267 files changed: 3247 ins; 1104 del; 1551 mod Patch: https://git.openjdk.org/jdk/pull/24877.diff Fetch: git fetch https://git.openjdk.org/jdk.git pull/24877/head:pull/24877 PR: https://git.openjdk.org/jdk/pull/24877
