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public class A implements Runnable
{
public B b;
public C c;
int i;
public A(B b, C c)
{
this.b = b;
this.c = c;
}
public void run()
{
while (true)
{
b.write();
b.read();
c.write();
c.read();
}
}
public static void main(String[] args)
{
MB mb = new MB();
MC mc = new MC();
A a1 = new A(new B("b j ecris", "aaaa", 1, mb),
new C("c j ecris", "eeeee",1, mc));
Thread t1 = new Thread(a1);
A a2 = new A(new B("b j ecris", "zzzzzz", 2, mb),
new C("c j ecris", "qqqqq", 2, mc));
Thread t2 = new Thread(a2);
t1.start();
t2.start();
}
}
public class B
{
String s;
String ss;
int i;
MB mb;
A a;
public B(String s, String ss, int i, MB mb)
{
this.s = s;
this.ss = ss;
this.i = i;
this.mb = mb;
}
public void write()
{
mb.isBusy();
System.out.println("B " + i + " ecrit , free = " + mb.free);
}
public void read()
{
System.out.println("B " + i + " lit ");
mb.isReady();
}
}
public class C
{
String s;
String ss;
int i;
MC mc;
public C(String s, String ss, int i, MC mc)
{
this.s = s;
this.ss = ss;
this.i = i;
this.mc = mc;
}
public void write()
{
mc.isBusy();
System.out.println("C " + i + " ecrit , free = " + mc.free);
}
public void read()
{
System.out.println("C " + i + " lit ");
mc.isReady();
}
}
public class MC
{
boolean free;
public MC()
{
free = true;
}
public synchronized void isReady()
{
//System.out.println("C DEBUT SECTION CRITIQUE");
free = true;
notifyAll();
}
public synchronized void isBusy()
{
while (free = false)
{
try
{
wait();
System.out.println("CCCCCCCCCCCCCCCC " + " attend");
}
catch (InterruptedException e)
{
e.printStackTrace();
}
}
free = false;
}
}
public class MB
{
boolean free;
public MB()
{
free = true;
}
public synchronized void isReady()
{
//System.out.println("B DEBUT SECTION CRITIQUE");
free = true;
notifyAll();
}
public synchronized void isBusy()
{
while (free = false)
{
try
{
wait();
System.out.println("BBBBBBBBBBBBBBBBBB " + " attend");
}
catch (InterruptedException e)
{
e.printStackTrace();
}
}
free = false;
}
} |
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