/*
This file is part of JOP, the Java Optimized Processor
see <http://www.jopdesign.com/>
Copyright (C) 2001-2008, Martin Schoeberl (martin@jopdesign.com)
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program 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 for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package wcet;
import com.jopdesign.sys.Const;
import com.jopdesign.sys.Native;
/**
* We test dynamic dispatch via exceptions
* Three exception classes, two (ExS,ExT) can be by measure.
*/
public class DispatchViaException {
static int ts, te, to;
public static void main(String[] _cmdlineargs) {
ts = Native.rdMem(Const.IO_CNT);
te = Native.rdMem(Const.IO_CNT);
to = te-ts;
S s = new S();
T t = new T();
int min = 0x7fffffff;
int max = 0;
int val = 0;
Base[] args = { s,t };
for(int i = 0; i < args.length; i++) {
measure(args[i]);
val = te-ts-to;
if (val<min) min = val;
if (val>max) max = val;
}
System.out.print("min: ");
System.out.println(min);
System.out.print("max: ");
System.out.println(max);
}
static int measure(Base obj) {
ts = Native.rdMem(Const.IO_CNT);
int val = 123;
try {
obj.dispatchE();
} catch(ExT e) {
for (int i=0; i<100; ++i) { // @WCA loop=100
val += i;
val += i;
}
} catch(ExS e) {
for (int i=0; i<10; ++i) { // @WCA loop=10
val += i;
val += i;
}
} catch(ExU e) {
for (int i=0; i<1000; ++i) { // @WCA loop=1000
val += i;
val += i;
}
} catch(ExBase e) {
}
te = Native.rdMem(Const.IO_CNT);
return val;
}
static class ExBase extends Exception {}
static class ExS extends ExBase {}
static class ExT extends ExBase {}
static class ExU extends ExBase {}
static abstract class Base {
abstract void dispatchE() throws ExBase;
}
static class S extends Base {
void dispatchE() throws ExBase {
throw new ExS();
}
}
static class T extends Base {
void dispatchE() throws ExBase {
throw new ExT();
}
}
static class U { /* doesn't extend Base ! */
void dispatchE() throws ExBase {
throw new ExU();
}
}
}