Fill jvm.thread.state attribute for jvm.thread.count metric on jdk8 #12724
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laurit
commented
Nov 13, 2024
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| // Visible for testing | ||
| static Thread[] getThreads() { | ||
| ThreadGroup threadGroup = Thread.currentThread().getThreadGroup(); |
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initially I planned to use reflection to call Thread.getThreads(), but that method is not available on openj9
laurit
commented
Nov 13, 2024
| List<AutoCloseable> registerObservers(OpenTelemetry openTelemetry, ThreadMXBean threadBean) { | ||
| return registerObservers( | ||
| openTelemetry, | ||
| isJava9OrNewer() ? Threads::java9AndNewerCallback : Threads::java8Callback, |
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the java8Callback is only used in tests
jaydeluca
approved these changes
Nov 15, 2024
akats7
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Nov 21, 2024
akats7
pushed a commit
to akats7/opentelemetry-java-instrumentation
that referenced
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Nov 21, 2024
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Related to #12614 and #11980
Currently on jdk8 we don't fill
jvm.thread.stateattribute because through the jmx apis on jdk 8 we can't getjvm.thread.stateandjvm.thread.daemonat the same time. This PR provides an alternative implementation based onjava.lang.Threadthat can fill both of these attributes on jdk8.