> The deadlock prone Thread/ThreadGroup suspend/resume were deprecated since > JDK 1.2, deprecated for removal in Java 14, and re-specified/degraded to > throw UnsupportedOperationException unconditionally in Java 19/20. Early in > Java 23 seems a fine time to finally remove these methods. > > Corpus analysis of 176 million classes in 485k artifacts found no remaining > usages of ThreadGroup.suspend/resume beyond the artifacts that include a copy > of java.lang.ThreadGroup (!). It found 87 remaining uses of Thread.suspend > and 86 remaining usages of Thread.resume, some of these are tests. > > Thread.suspend/resume have always linked to the "Java Thread Primitive > Deprecation" page. This originally explained the reasons why suspend/resume > were deprecated. When these methods were degraded to throw UOE we changed the > text to explain why the ability to suspend or resume a thread was removed. > Now we must change it again. One choice is to re-word to explain why the Java > APIs were removed or why the Java APIs don't define a way to suspend/resume > threads, the other choice (which I prefer) is to remove the text. > > The method description of java.lang.management.ThreadInfo.isSuspended is > tweaked to link to JVMTI SuspendThread instead of Thread.suspend
Alan Bateman 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: - Update copyright year - Merge - Clarify ThreadInfo.isSuspended - Initial commit ------------- Changes: - all: https://git.openjdk.org/jdk/pull/16789/files - new: https://git.openjdk.org/jdk/pull/16789/files/cc17ea42..517de309 Webrevs: - full: https://webrevs.openjdk.org/?repo=jdk&pr=16789&range=01 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=16789&range=00-01 Stats: 106040 lines in 2348 files changed: 55620 ins; 41750 del; 8670 mod Patch: https://git.openjdk.org/jdk/pull/16789.diff Fetch: git fetch https://git.openjdk.org/jdk.git pull/16789/head:pull/16789 PR: https://git.openjdk.org/jdk/pull/16789
