| /* |
| * 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 |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| 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) { |
| return endTimeTicks - startTimeTicks; |
| } |
| return objects[index - 2]; |
| } |
| return objects[index - 1]; |
| } |
| |
| private boolean hasDuration() { |
| return objects.length + 2 == objectContext.fields.size(); |
| } |
| |
| private long getStartTimeNanos() { |
| return objectContext.convertTimestamp(startTimeTicks); |
| } |
| |
| private long getEndTimeNanos() { |
| return objectContext.convertTimestamp(endTimeTicks); |
| } |
| } |