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import javassist.CannotCompileException;
import javassist.ClassPool;
import javassist.CtClass;
import javassist.CtMethod;
import javassist.NotFoundException;
public class Jassist150 {
public static final String BASE_PATH="./";
public static final String JAVASSIST_JAR=BASE_PATH+"javassist.jar";
public static final String CLASSES_FOLDER=BASE_PATH+"build/classes";
public static final String TEST_CLASSES_FOLDER=BASE_PATH+"build/test-classes";
public static class Inner1 {
public static int get() {
return 0;
}
}
public static void implTestClassTailCache() throws NotFoundException, CannotCompileException {
ClassPool pool = new ClassPool(true);
for(int paths=0; paths<50; paths++) {
pool.appendClassPath(JAVASSIST_JAR);
pool.appendClassPath(CLASSES_FOLDER);
pool.appendClassPath(TEST_CLASSES_FOLDER);
}
CtClass cc = pool.get("Jassist150$Inner1");
CtMethod ccGet = cc.getDeclaredMethod("get");
String code1 = "{ int n1 = Integer.valueOf(1); " +
" int n2 = Integer.valueOf(2); " +
" int n3 = Integer.valueOf(3); " +
" int n4 = Integer.valueOf(4); " +
" int n5 = Integer.valueOf(5); " +
" return n1+n2+n3+n4+n5; }";
String code2 = "{ int n1 = java.lang.Integer.valueOf(1); " +
" int n2 = java.lang.Integer.valueOf(2); " +
" int n3 = java.lang.Integer.valueOf(3); " +
" int n4 = java.lang.Integer.valueOf(4); " +
" int n5 = java.lang.Integer.valueOf(5); " +
" return n1+n2+n3+n4+n5; }";
String code3 = "{ int n1 = java.lang.Integer#valueOf(1); " +
" int n2 = java.lang.Integer#valueOf(2); " +
" int n3 = java.lang.Integer#valueOf(3); " +
" int n4 = java.lang.Integer#valueOf(4); " +
" int n5 = java.lang.Integer#valueOf(5); " +
" return n1+n2+n3+n4+n5; }";
loop(cc, ccGet, code1);
}
public static void loop(CtClass cc, CtMethod ccGet, String code) throws CannotCompileException {
long startTime = System.currentTimeMillis();
for(int replace=0; replace<1000; replace++) {
ccGet.setBody(code);
}
long endTime = System.currentTimeMillis();
System.out.println("Test: Time (ms) "+(endTime-startTime));
}
public static void main(String[] args) {
for (int loop = 0; loop < 5; loop++) {
try {
implTestClassTailCache();
} catch (Exception e) {
e.printStackTrace();
}
}
}
}
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