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/*
* The MIT License
*
* Copyright (c) 2014 Red Hat, Inc.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
package com.github.olivergondza.dumpling.model;
import java.lang.Thread.State;
import java.util.concurrent.locks.LockSupport;
import javax.annotation.CheckForNull;
import javax.annotation.Nonnull;
/**
* Thread status.
*
* More detailed version of {@link java.lang.Thread.State}.
*
* @author ogondza
* @see javaClasses.cpp
*/
public enum ThreadStatus {
NEW ("NEW", 0, State.NEW),
RUNNABLE ("RUNNABLE", 5, State.RUNNABLE),
SLEEPING ("TIMED_WAITING (sleeping)", 225, State.TIMED_WAITING),
/**
* Thread in {@link Object#wait()}.
*
* @see java.lang.Thread.State#WAITING
*/
IN_OBJECT_WAIT ("WAITING (on object monitor)", 401, State.WAITING),
/**
* Thread in {@link Object#wait(long)}.
*
* @see java.lang.Thread.State#TIMED_WAITING
*/
IN_OBJECT_WAIT_TIMED("TIMED_WAITING (on object monitor)", 417, State.TIMED_WAITING),
/**
* Thread in {@link LockSupport#park()}.
*
* @see java.lang.Thread.State#WAITING
*/
PARKED ("WAITING (parking)", 657, State.WAITING),
/**
* Thread in {@link LockSupport#parkNanos}.
*
* @see java.lang.Thread.State#TIMED_WAITING
*/
PARKED_TIMED ("TIMED_WAITING (parking)", 673, State.TIMED_WAITING),
BLOCKED ("BLOCKED (on object monitor)", 1025, State.BLOCKED),
TERMINATED ("TERMINATED", 2, State.TERMINATED),
/**
* Runtime factory was not able to determine thread state.
*
* This can happen for service threads in threaddump.
*/
UNKNOWN ("UNKNOWN", -1, null);
/**
* Description used in thread dump.
*/
private final @Nonnull String name;
@Deprecated private final int code;
/**
* Matching java.lang.Thread.State.
*/
private final State state;
private ThreadStatus(@Nonnull String name, int code, State state) {
this.name = name;
this.code = code;
this.state = state;
}
public @Nonnull String getName() {
return name;
}
public int getCode() {
return code;
}
public @CheckForNull State getState() {
return state;
}
/**
* Newly create thread
*
* @see java.lang.Thread.State#NEW
*/
public boolean isNew() {
return this == NEW;
}
/**
* Thread that is runnable / running.
*
* @see java.lang.Thread.State#RUNNABLE
*/
public boolean isRunnable() {
return this == RUNNABLE;
}
/**
* Thread in {@link Thread#sleep(long)} or {@link Thread#sleep(long, int)} waiting to be notified.
*
* @see java.lang.Thread.State#TIMED_WAITING
*/
public boolean isSleeping() {
return this == SLEEPING;
}
/**
* Thread in {@link Object#wait()} or {@link Object#wait(long)}.
*
* @see java.lang.Thread.State#WAITING
* @see java.lang.Thread.State#TIMED_WAITING
*/
public boolean isWaiting() {
return this == IN_OBJECT_WAIT || this == IN_OBJECT_WAIT_TIMED;
}
/**
* Thread in {@link LockSupport#park()} or {@link LockSupport#parkNanos}.
*
* @see java.lang.Thread.State#WAITING
* @see java.lang.Thread.State#TIMED_WAITING
*/
public boolean isParked() {
return this == PARKED || this == PARKED_TIMED;
}
/**
* Thread (re-)entering a synchronization block.
*
* @see java.lang.Thread.State#BLOCKED
*/
public boolean isBlocked() {
return this == BLOCKED;
}
/**
* Thread that terminated execution.
*
* @see java.lang.Thread.State#TERMINATED
*/
public boolean isTerminated() {
return this == TERMINATED;
}
@Deprecated public static @Nonnull ThreadStatus valueOf(int code) {
for (ThreadStatus status: values()) {
if (status.code == code) return status;
}
return UNKNOWN;
}
public static @Nonnull ThreadStatus fromString(String title) {
try {
return Enum.valueOf(ThreadStatus.class, title);
} catch (IllegalArgumentException ex) {
for (ThreadStatus value: values()) {
if (value.getName().equals(title)) return value;
}
throw ex;
}
}
@Deprecated public static @Nonnull ThreadStatus fromState(Thread.State state) {
for (ThreadStatus value: values()) {
if (value.state.equals(state)) return value;
}
throw new AssertionError("No matching ThreadState");
}
public static @Nonnull ThreadStatus fromState(@Nonnull Thread.State state, @Nonnull StackTraceElement head) {
switch (state) {
case NEW: return NEW;
case RUNNABLE: return RUNNABLE;
case BLOCKED: return BLOCKED;
case WAITING: return waitingState(false, head); // Not exact
case TIMED_WAITING: return waitingState(true, head); // Not exact
case TERMINATED: return TERMINATED;
default: return UNKNOWN;
}
}
private static @Nonnull ThreadStatus waitingState(boolean timed, @Nonnull StackTraceElement head) {
if ("sleep".equals(head.getMethodName()) && "java.lang.Thread".equals(head.getClassName())) return SLEEPING;
if ("wait".equals(head.getMethodName()) && "java.lang.Object".equals(head.getClassName())) {
return timed ? IN_OBJECT_WAIT_TIMED : IN_OBJECT_WAIT;
}
if ("park".equals(head.getMethodName()) && "sun.misc.Unsafe".equals(head.getClassName())) {
return timed ? PARKED_TIMED : PARKED;
}
throw new AssertionError("Unable to infer ThreadStatus from WAITING state in " + head);
}
}
