My first initial commit with all of mine experimental changes.

Dmitry Kabak (userdima committed 13 years ago

Commit d37b88d1 parent 3f5b46618352 files · +2598093 −-8690Browse files

Showing the changes to java/pkg/sun/management/Sensor.java (1 of 18352 files). Show all

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java/pkg/sun/management/Sensor.java+172−0

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	1	+/*
	2	+ * Copyright (c) 2003, Oracle and/or its affiliates. All rights reserved.
	3	+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
	4	+ *
	5	+ * This code is free software; you can redistribute it and/or modify it
	6	+ * under the terms of the GNU General Public License version 2 only, as
	7	+ * published by the Free Software Foundation. Oracle designates this
	8	+ * particular file as subject to the "Classpath" exception as provided
	9	+ * by Oracle in the LICENSE file that accompanied this code.
	10	+ *
	11	+ * This code is distributed in the hope that it will be useful, but WITHOUT
	12	+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
	13	+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
	14	+ * version 2 for more details (a copy is included in the LICENSE file that
	15	+ * accompanied this code).
	16	+ *
	17	+ * You should have received a copy of the GNU General Public License version
	18	+ * 2 along with this work; if not, write to the Free Software Foundation,
	19	+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
	20	+ *
	21	+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
	22	+ * or visit www.oracle.com if you need additional information or have any
	23	+ * questions.
	24	+ */
	25	+
	26	+package sun.management;
	27	+
	28	+import java.lang.management.MemoryUsage;
	29	+import java.util.Iterator;
	30	+import java.util.Map;
	31	+import java.util.HashMap;
	32	+
	33	+/**
	34	+ * An abstract sensor.
	35	+ *
	36	+ * <p>
	37	+ * A <tt>AbstractSensor</tt> object consists of two attributes:
	38	+ * <ul>
	39	+ * <li><tt>on</tt> is a boolean flag indicating if a sensor is
	40	+ * triggered. This flag will be set or cleared by the
	41	+ * component that owns the sensor.</li>
	42	+ * <li><tt>count</tt> is the total number of times that a sensor
	43	+ * has been triggered.</li>
	44	+ * </ul>
	45	+ *
	46	+ * @author Mandy Chung
	47	+ * @since 1.5
	48	+ */
	49	+
	50	+public abstract class Sensor {
	51	+ private Object lock;
	52	+ private String name;
	53	+ private long count;
	54	+ private boolean on;
	55	+
	56	+ /**
	57	+ * Constructs a <tt>Sensor</tt> object.
	58	+ *
	59	+ * @param name The name of this sensor.
	60	+ */
	61	+ public Sensor(String name) {
	62	+ this.name = name;
	63	+ this.count = 0;
	64	+ this.on = false;
	65	+ this.lock = new Object();
	66	+ }
	67	+
	68	+ /**
	69	+ * Returns the name of this sensor.
	70	+ *
	71	+ * @return the name of this sensor.
	72	+ */
	73	+ public String getName() {
	74	+ return name;
	75	+ }
	76	+
	77	+ /**
	78	+ * Returns the total number of times that this sensor has been triggered.
	79	+ *
	80	+ * @return the total number of times that this sensor has been triggered.
	81	+ */
	82	+ public long getCount() {
	83	+ synchronized (lock) {
	84	+ return count;
	85	+ }
	86	+ }
	87	+
	88	+ /**
	89	+ * Tests if this sensor is currently on.
	90	+ *
	91	+ * @return <tt>true</tt> if the sensor is currently on;
	92	+ * <tt>false</tt> otherwise.
	93	+ *
	94	+ */
	95	+ public boolean isOn() {
	96	+ synchronized (lock) {
	97	+ return on;
	98	+ }
	99	+ }
	100	+
	101	+ /**
	102	+ * Triggers this sensor. This method first sets this sensor on
	103	+ * and increments its sensor count.
	104	+ */
	105	+ public void trigger() {
	106	+ synchronized (lock) {
	107	+ on = true;
	108	+ count++;
	109	+ }
	110	+ triggerAction();
	111	+ }
	112	+
	113	+ /**
	114	+ * Triggers this sensor. This method sets this sensor on
	115	+ * and increments the count with the input <tt>increment</tt>.
	116	+ */
	117	+ public void trigger(int increment) {
	118	+ synchronized (lock) {
	119	+ on = true;
	120	+ count += increment;
	121	+ // Do something here...
	122	+ }
	123	+ triggerAction();
	124	+ }
	125	+
	126	+ /**
	127	+ * Triggers this sensor piggybacking a memory usage object.
	128	+ * This method sets this sensor on
	129	+ * and increments the count with the input <tt>increment</tt>.
	130	+ */
	131	+ public void trigger(int increment, MemoryUsage usage) {
	132	+ synchronized (lock) {
	133	+ on = true;
	134	+ count += increment;
	135	+ // Do something here...
	136	+ }
	137	+ triggerAction(usage);
	138	+ }
	139	+
	140	+ /**
	141	+ * Clears this sensor.
	142	+ */
	143	+ public void clear() {
	144	+ synchronized (lock) {
	145	+ on = false;
	146	+ }
	147	+ clearAction();
	148	+ }
	149	+
	150	+
	151	+ /**
	152	+ * Clears this sensor
	153	+ * and increments the count with the input <tt>increment</tt>.
	154	+ */
	155	+ public void clear(int increment) {
	156	+ synchronized (lock) {
	157	+ on = false;
	158	+ count += increment;
	159	+ }
	160	+ clearAction();
	161	+ }
	162	+
	163	+ public String toString() {
	164	+ return "Sensor - " + getName() +
	165	+ (isOn() ? " on " : " off ") +
	166	+ " count = " + getCount();
	167	+ }
	168	+
	169	+ abstract void triggerAction();
	170	+ abstract void triggerAction(MemoryUsage u);
	171	+ abstract void clearAction();
	172	+}