/*
* Copyright (c) 2016, 2019, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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package jdk.jfr.consumer;
import java.time.Duration;
import java.time.Instant;
import java.util.List;
import jdk.jfr.EventType;
import jdk.jfr.ValueDescriptor;
import jdk.jfr.internal.EventInstrumentation;
import jdk.jfr.internal.consumer.ObjectContext;
/**
* A recorded event.
*
* @since 9
*/
public final class RecordedEvent extends RecordedObject {
long startTimeTicks;
long endTimeTicks;
// package private
RecordedEvent(ObjectContext objectContext, Object[] values, long startTimeTicks, long endTimeTicks) {
super(objectContext, values);
this.startTimeTicks = startTimeTicks;
this.endTimeTicks = endTimeTicks;
}
/**
* Returns the stack trace that was created when the event was committed, or
* {@code null} if the event lacks a stack trace.
*
* @return stack trace, or {@code null} if doesn't exist for the event
*/
public RecordedStackTrace getStackTrace() {
return getTyped(EventInstrumentation.FIELD_STACK_TRACE, RecordedStackTrace.class, null);
}
/**
* Returns the thread from which the event was committed, or {@code null} if
* the thread was not recorded.
*
* @return thread, or {@code null} if doesn't exist for the event
*/
public RecordedThread getThread() {
return getTyped(EventInstrumentation.FIELD_EVENT_THREAD, RecordedThread.class, null);
}
/**
* Returns the event type that describes the event.
*
* @return the event type, not {@code null}
*/
public EventType getEventType() {
return objectContext.eventType;
}
/**
* Returns the start time of the event.
* <p>
* If the event is an instant event, then the start time and end time are the same.
*
* @return the start time, not {@code null}
*/
public Instant getStartTime() {
return Instant.ofEpochSecond(0, getStartTimeNanos());
}
/**
* Returns the end time of the event.
* <p>
* If the event is an instant event, then the start time and end time are the same.
*
* @return the end time, not {@code null}
*/
public Instant getEndTime() {
return Instant.ofEpochSecond(0, getEndTimeNanos());
}
/**
* Returns the duration of the event, measured in nanoseconds.
*
* @return the duration in nanoseconds, not {@code null}
*/
public Duration getDuration() {
return Duration.ofNanos(getEndTimeNanos() - getStartTimeNanos());
}
/**
* Returns the list of descriptors that describes the fields of the event.
*
* @return descriptors, not {@code null}
*/
@Override
public List<ValueDescriptor> getFields() {
return objectContext.fields;
}
protected final Object objectAt(int index) {
if (index == 0) {
return startTimeTicks;
}
if (hasDuration()) {
if (index == 1) {
/**代码未完, 请加载全部代码(NowJava.com).**/