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Java example source code file (JavaThreadState.java)

This example Java source code file (JavaThreadState.java) is included in the alvinalexander.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Learn more about this Java project at its project page.

Java - Java tags/keywords

blocked_trans, in_java_trans, in_native_trans, in_vm_trans, javathreadstate, new, new_trans, string, uninitialized

The JavaThreadState.java Java example source code

/*
 * Copyright (c) 2000, 2003, 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.
 *
 * 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 sun.jvm.hotspot.runtime;

/** This is a type-safe enum mirroring the JavaThreadState enum in
    globalDefinitions.hpp. The conversion between the underlying ints
    and these values is done in JavaThread. */

public class JavaThreadState {
  private String stringVal;

  /** Should never happen (missing initialization) */
  public static final JavaThreadState UNINITIALIZED     = new JavaThreadState("UNINITIALIZED");
  /** Just starting up, i.e., in process of being initialized */
  public static final JavaThreadState NEW               = new JavaThreadState("NEW");
  /** Corresponding transition state (not used, included for completness) */
  public static final JavaThreadState NEW_TRANS         = new JavaThreadState("NEW_TRANS");
  /** Running in native code */
  public static final JavaThreadState IN_NATIVE         = new JavaThreadState("IN_NATIVE");
  /** Corresponding transition state */
  public static final JavaThreadState IN_NATIVE_TRANS   = new JavaThreadState("IN_NATIVE_TRANS");
  /** Running in VM */
  public static final JavaThreadState IN_VM             = new JavaThreadState("IN_VM");
  /** Corresponding transition state */
  public static final JavaThreadState IN_VM_TRANS       = new JavaThreadState("IN_VM_TRANS");
  /** Running in Java or in stub code */
  public static final JavaThreadState IN_JAVA           = new JavaThreadState("IN_JAVA");
  /** Corresponding transition state (not used, included for completness) */
  public static final JavaThreadState IN_JAVA_TRANS     = new JavaThreadState("IN_JAVA_TRANS");
  /** Blocked in vm */
  public static final JavaThreadState BLOCKED           = new JavaThreadState("BLOCKED");
  /** Corresponding transition state   */
  public static final JavaThreadState BLOCKED_TRANS     = new JavaThreadState("BLOCKED_TRANS");
  /** Special state needed, since we cannot suspend a thread when it is in native_trans */

  private JavaThreadState(String stringVal) {
    this.stringVal = stringVal;
  }

  public String toString() {
    return stringVal;
  }
}

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