Examples with JfrNativeEventWriterData com.oracle.svm.core.jfr.JfrNativeEventWriterData used on opensource projects

Example 1 with JfrNativeEventWriterData

use of com.oracle.svm.core.jfr.JfrNativeEventWriterData in project graal by oracle.

the class JfrGCEventFeature method emitGCPhasePauseEvent.

@Uninterruptible(reason = "Accesses a JFR buffer.")
public void emitGCPhasePauseEvent(UnsignedWord gcEpoch, String name, long startTicks) {
    int level = popPhase();
    JfrEvent event = getGCPhasePauseEvent(level);
    if (SubstrateJVM.isRecording() && SubstrateJVM.get().isEnabled(event)) {
        long end = JfrTicks.elapsedTicks();
        JfrNativeEventWriterData data = StackValue.get(JfrNativeEventWriterData.class);
        JfrNativeEventWriterDataAccess.initializeThreadLocalNativeBuffer(data);
        JfrNativeEventWriter.beginEventWrite(data, false);
        JfrNativeEventWriter.putLong(data, event.getId());
        JfrNativeEventWriter.putLong(data, startTicks);
        JfrNativeEventWriter.putLong(data, end - startTicks);
        JfrNativeEventWriter.putEventThread(data);
        JfrNativeEventWriter.putLong(data, gcEpoch.rawValue());
        JfrNativeEventWriter.putString(data, name);
        JfrNativeEventWriter.endEventWrite(data, false);
    }
}

Example 2 with JfrNativeEventWriterData

use of com.oracle.svm.core.jfr.JfrNativeEventWriterData in project graal by oracle.

the class EndChunkNativePeriodicEvents method emitInitialSystemProperties.

@Uninterruptible(reason = "Accesses a JFR buffer.")
private static void emitInitialSystemProperties(StringEntry[] systemProperties) {
    if (SubstrateJVM.isRecording() && SubstrateJVM.get().isEnabled(JfrEvent.InitialSystemProperty)) {
        JfrNativeEventWriterData data = StackValue.get(JfrNativeEventWriterData.class);
        JfrNativeEventWriterDataAccess.initializeThreadLocalNativeBuffer(data);
        for (StringEntry systemProperty : systemProperties) {
            JfrNativeEventWriter.beginEventWrite(data, false);
            JfrNativeEventWriter.putLong(data, JfrEvent.InitialSystemProperty.getId());
            JfrNativeEventWriter.putLong(data, JfrTicks.elapsedTicks());
            JfrNativeEventWriter.putString(data, systemProperty.key);
            JfrNativeEventWriter.putString(data, systemProperty.value);
            JfrNativeEventWriter.endEventWrite(data, false);
        }
    }
}

Example 3 with JfrNativeEventWriterData

use of com.oracle.svm.core.jfr.JfrNativeEventWriterData in project graal by oracle.

the class EndChunkNativePeriodicEvents method emitClassLoadingStatistics.

@Uninterruptible(reason = "Accesses a JFR buffer.")
private static void emitClassLoadingStatistics(long loadedClassCount, long unloadedClassCount) {
    if (SubstrateJVM.isRecording() && SubstrateJVM.get().isEnabled(JfrEvent.ClassLoadingStatistics)) {
        JfrNativeEventWriterData data = StackValue.get(JfrNativeEventWriterData.class);
        JfrNativeEventWriterDataAccess.initializeThreadLocalNativeBuffer(data);
        JfrNativeEventWriter.beginEventWrite(data, false);
        JfrNativeEventWriter.putLong(data, JfrEvent.ClassLoadingStatistics.getId());
        JfrNativeEventWriter.putLong(data, JfrTicks.elapsedTicks());
        JfrNativeEventWriter.putLong(data, loadedClassCount);
        JfrNativeEventWriter.putLong(data, unloadedClassCount);
        JfrNativeEventWriter.endEventWrite(data, false);
    }
}

Example 4 with JfrNativeEventWriterData

use of com.oracle.svm.core.jfr.JfrNativeEventWriterData in project graal by oracle.

the class SafepointBeginEvent method emit.

/**
 * HotSpot reports the number of Java threads, so we do the same. In our case that includes the
 * VM operation thread. This is a major difference to HotSpot but affects other JFR areas as
 * well.
 */
@Uninterruptible(reason = "Accesses a JFR buffer.")
public static void emit(UnsignedWord safepointId, int numJavaThreads, long startTicks) {
    if (!HasJfrSupport.get()) {
        return;
    }
    if (SubstrateJVM.isRecording() && SubstrateJVM.get().isEnabled(JfrEvent.SafepointBegin)) {
        JfrNativeEventWriterData data = StackValue.get(JfrNativeEventWriterData.class);
        JfrNativeEventWriterDataAccess.initializeThreadLocalNativeBuffer(data);
        JfrNativeEventWriter.beginEventWrite(data, false);
        JfrNativeEventWriter.putLong(data, JfrEvent.SafepointBegin.getId());
        JfrNativeEventWriter.putLong(data, startTicks);
        JfrNativeEventWriter.putLong(data, JfrTicks.elapsedTicks() - startTicks);
        JfrNativeEventWriter.putEventThread(data);
        JfrNativeEventWriter.putLong(data, safepointId.rawValue());
        JfrNativeEventWriter.putInt(data, numJavaThreads);
        // jniCriticalThreadCount
        JfrNativeEventWriter.putInt(data, 0);
        JfrNativeEventWriter.endEventWrite(data, false);
    }
}

Example 5 with JfrNativeEventWriterData

use of com.oracle.svm.core.jfr.JfrNativeEventWriterData in project graal by oracle.

the class ThreadEndEvent method emit.

@Uninterruptible(reason = "Accesses a JFR buffer.")
public static void emit(IsolateThread isolateThread) {
    if (SubstrateJVM.isRecording() && SubstrateJVM.get().isEnabled(JfrEvent.ThreadEnd)) {
        JfrNativeEventWriterData data = StackValue.get(JfrNativeEventWriterData.class);
        JfrNativeEventWriterDataAccess.initializeThreadLocalNativeBuffer(data);
        JfrNativeEventWriter.beginEventWrite(data, false);
        JfrNativeEventWriter.putLong(data, JfrEvent.ThreadEnd.getId());
        JfrNativeEventWriter.putLong(data, JfrTicks.elapsedTicks());
        JfrNativeEventWriter.putEventThread(data);
        JfrNativeEventWriter.putThread(data, isolateThread);
        JfrNativeEventWriter.endEventWrite(data, false);
    }
}