Java Thread 之間 記憶體空間分析

SimpleThread.java

import com.abc.ChirpControllerDevice;

public class SimpleThread

{

public static void main(String[] args)

{

ChirpControllerDevice mC0 = null;

ChirpControllerDevice mC1 = null;

Thread thread = new Thread(new Runnable() {

public long getPID() {

String processName =

java.lang.management.ManagementFactory.getRuntimeMXBean().getName();

return Long.parseLong(processName.split("@")[0]);

}

public void run() {

while (true) {

try {

Thread.sleep(5000);

} catch (InterruptedException e) {

System.out.println(e);

}

System.out.println("T" + ", PID:" + getPID() + ", TID:"+ Thread.currentThread().getId());

}

}

});

thread.start();

mC0 = new ChirpControllerDevice(88);

mC0.init();

mC1 = new ChirpControllerDevice(66);

mC1.init();

/*

while (true) {

try {

Thread.sleep(500);

} catch (InterruptedException e) {

System.out.println(e);

}

}

*/

// 主執行緒繼續進行其它工作........

// such...such....

// 現在主執行緒執行到這邊了，工作應該結束了

}

}

ChirpControllerDevice.java

package com.abc;

import java.util.concurrent.BlockingQueue;

import java.util.concurrent.LinkedBlockingQueue;

import java.util.concurrent.TimeUnit;

import java.lang.Math;

public class ChirpControllerDevice

{

private String TAG = "";

private boolean DEBUG = true;

private Object mSimulatorlocker = new Object();

private Thread mPollingThread;

private int mData;

public ChirpControllerDevice(int data)

{

mData = data;

}

public void init()

{

mPollingThread = new Thread(new ChirpPollingRunnable());

mPollingThread.start();

}

public class ChirpPollingRunnable implements Runnable

{

public ChirpPollingRunnable()

{

}

public long getPID()

{

String processName =

java.lang.management.ManagementFactory.getRuntimeMXBean().getName();

return Long.parseLong(processName.split("@")[0]);

}

@Override

public void run()

{

while (true) {

try {

Thread.sleep(1000);

} catch (InterruptedException e) {

System.out.println(e);

}

System.out.println("data:" + mData + ", address:" + this + ", PID:" +getPID() + ", TID:"+ Thread.currentThread().getId());

/*

System.out.println(Thread.currentThread().getStackTrace()[2].getClassName() +

"[" + Thread.currentThread().getStackTrace()[2].getMethodName() + " | " +

Thread.currentThread().getStackTrace()[2].getFileName() + ":" +

Thread.currentThread().getStackTrace()[2].getLineNumber() + "]");

*/

}

}

}

}

Makefile

JFLAGS = -g -cp ./classes/ -d ./classes

JC = javac

JVM= java

CLASSESDIR = classes

RM = rm -rf

SIMPLETHREAD = SimpleThread

.SUFFIXES: .java .class

.java.class:

$(JC) $(JFLAGS) $*.java

CLASSES = \

ChirpControllerDevice.java \

SimpleThread.java \

default: dir classes

dir:

mkdir -p $(CLASSESDIR)

classes: $(CLASSES:.java=.class)

@- echo "Done Compiling!!"

run:

$(JVM) -cp classes $(SIMPLETHREAD)

clean:

$(RM) *.class classes

javac -d . ChirpControllerDevice.java SimpleThread.java

java SimpleThread