> With [JDK-8359110](https://bugs.openjdk.org/browse/JDK-8359110) a framework > to measure GC CPU time was introduced. > It will be exposed in JMX as `MemoryMXBean.getTotalGcCpuTime()`. There is > also interest to get the same performance data from JVMTI. > The following API's are being added with this enhancement: > > Introduce: > - new capability: `can_get_gc_cpu_time` > - new JVMTI functions: > - `jvmtiError GetGCCpuTimerInfo(jvmtiEnv* env, jvmtiTimerInfo* info_ptr)` > - `jvmtiError GetTotalGCCpuTime(jvmtiEnv* env, jlong* nanos_ptr)` > > The related CSR will be created shortly. > > Testing: > - TBD: Mach5 tiers 1-6
Serguei Spitsyn has updated the pull request incrementally with one additional commit since the last revision: Review: add os::is_thread_cpu_time_supported() check ------------- Changes: - all: https://git.openjdk.org/jdk/pull/27879/files - new: https://git.openjdk.org/jdk/pull/27879/files/b3bc092f..1fef0d71 Webrevs: - full: https://webrevs.openjdk.org/?repo=jdk&pr=27879&range=01 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=27879&range=00-01 Stats: 2 lines in 1 file changed: 1 ins; 0 del; 1 mod Patch: https://git.openjdk.org/jdk/pull/27879.diff Fetch: git fetch https://git.openjdk.org/jdk.git pull/27879/head:pull/27879 PR: https://git.openjdk.org/jdk/pull/27879
