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package javassist;
import junit.framework.*;
import javassist.expr.*;
import javassist.compiler.*;
public class Bench extends JvstTestRoot {
public Bench(String name) {
super(name);
}
public void testProceed() throws Exception {
CtClass cc = sloader.get("test.BenchProceed");
CtMethod m1 = cc.getDeclaredMethod("p");
m1.instrument(new ExprEditor() {
public void edit(MethodCall m) throws CannotCompileException {
if (m.getMethodName().equals("calc"))
m.replace("{ before($args); $_ = $proceed($$); }");
}
});
CtMethod m2 = cc.getDeclaredMethod("q");
m2.instrument(new ExprEditor() {
public void edit(MethodCall m) throws CannotCompileException {
if (m.getMethodName().equals("calc"))
m.replace("{ $_ = ($r)replace($args); }");
}
});
CtMethod m3 = cc.getDeclaredMethod("s");
m3.instrument(new ExprEditor() {
public void edit(MethodCall m) throws CannotCompileException {
if (m.getMethodName().equals("calc2"))
m.replace(
"{ long start = System.currentTimeMillis();"
+ "$_ = $proceed($$);"
+ "long elapsed = System.currentTimeMillis() - start;"
+ "System.out.println(elapsed); }");
}
});
CtMethod m4 = cc.getDeclaredMethod("t");
m4.instrument(new ExprEditor() {
public void edit(MethodCall m) throws CannotCompileException {
if (m.getMethodName().equals("calc2"))
m.replace(
"{ long start = System.currentTimeMillis();"
+ "$_ = $proceed($$);"
+ "System.out.println(System.currentTimeMillis() - start);"
+ "}");
}
});
cc.writeFile();
Object obj = make(cc.getName());
int ptime = invoke(obj, "p");
int qtime = invoke(obj, "q");
System.out.println("time: (p) " + ptime + ", (q) " + qtime);
System.out.println("s:");
invoke(obj, "s");
System.out.println("t:");
invoke(obj, "t");
assertTrue(ptime < qtime);
}
public void testProceedNew() throws Exception {
CtClass cc = sloader.get("test.BenchProceedNew");
CtMethod m1 = cc.getDeclaredMethod("jvst0");
m1.instrument(new ExprEditor() {
public void edit(NewExpr m) throws CannotCompileException {
m.replace("{ $_ = $proceed($$); }");
}
});
CtMethod m2 = cc.getDeclaredMethod("jvst2");
m2.instrument(new ExprEditor() {
public void edit(NewExpr m) throws CannotCompileException {
m.replace("{ $_ = $proceed($$); }");
}
});
cc.writeFile();
Object obj = make(cc.getName());
int qtime = invoke(obj, "jvst0");
int ptime = invoke(obj, "org0");
System.out.println("time: (org0) " + ptime + ", (jvst0) " + qtime);
qtime = invoke(obj, "jvst2");
ptime = invoke(obj, "org2");
System.out.println("time: (org2) " + ptime + ", (jvst2) " + qtime);
}
public void testStaticMethod() throws Exception {
CtClass cc = sloader.get("test.BenchStaticMethod");
CtMethod m1 = cc.getDeclaredMethod("test");
m1.instrument(new ExprEditor() {
public void edit(MethodCall m) throws CannotCompileException {
if (m.getMethodName().equals("foo"))
m.replace("{ num += $1; $_ = $proceed($$); }");
}
});
cc.writeFile();
Object obj = make(cc.getName());
int qtime = invoke(obj, "test");
int ptime = invoke(obj, "orgTest");
System.out.println(
"BenchStaticMethod time: (org) " + ptime + ", (jvst) " + qtime);
}
public void testStaticField() throws Exception {
System.out.println(sloader);
Javac jc = new Javac(sloader.get("test.StaticField"));
long t0 = System.currentTimeMillis();
for (int i = 0; i < 100; i++)
jc.compileStmnt("{ int counter = 0; counter++; }");
t0 = System.currentTimeMillis() - t0;
System.out.println("local variable: " + (t0 * 10) + " usec");
long t = System.currentTimeMillis();
for (int i = 0; i < 100; i++)
jc.compileStmnt("{ test.StaticField.counter++; }");
t = System.currentTimeMillis() - t;
System.out.println("StaticField: " + (t * 10) + " usec");
long t2 = System.currentTimeMillis();
for (int i = 0; i < 100; i++)
jc.compileStmnt("{ test.StaticField#counter++; }");
t2 = System.currentTimeMillis() - t2;
System.out.println("StaticField with #: " + (t2 * 10) + " usec");
long t3 = System.currentTimeMillis();
for (int i = 0; i < 100; i++)
jc.compileStmnt("{ StaticField.counter2++; }");
t3 = System.currentTimeMillis() - t3;
System.out.println("StaticField without package: " + (t3 * 10) + " usec");
long t4 = System.currentTimeMillis();
for (int i = 0; i < 100; i++)
jc.compileStmnt("{ test.StaticField.counter++; }");
t4 = System.currentTimeMillis() - t4;
System.out.println("StaticField: " + (t4 * 10) + " usec");
long t5 = System.currentTimeMillis();
for (int i = 0; i < 100; i++)
jc.compileStmnt("{ System.out.println(); }");
t5 = System.currentTimeMillis() - t5;
System.out.println("println: " + (t5 * 10) + " usec");
}
public static Test suite() {
TestSuite suite = new TestSuite("Benchmark Tests");
suite.addTestSuite(Bench.class);
suite.addTestSuite(testproxy.ProxyFactoryPerformanceTest.class);
return suite;
}
}
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