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import javassist.CannotCompileException;
import javassist.ClassPool;
import javassist.CtClass;
import javassist.CtMethod;
import javassist.NotFoundException;
import javassist.expr.ExprEditor;
import javassist.expr.MethodCall;
@SuppressWarnings("unused")
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$Inner1");
CtMethod ccGet = cc.getDeclaredMethod("get");
String code1 = "{ int n1 = Integer.valueOf(1); "
+ " int n2 = Integer.valueOf(2); "
+ " int n3 = Integer.valueOf(3); "
+ " int n4 = Integer.valueOf(4); "
+ " int n5 = Integer.valueOf(5); "
+ " return n1+n2+n3+n4+n5; }";
String code2 = "{ int n1 = java.lang.Integer.valueOf(1); "
+ " int n2 = java.lang.Integer.valueOf(2); "
+ " int n3 = java.lang.Integer.valueOf(3); "
+ " int n4 = java.lang.Integer.valueOf(4); "
+ " int n5 = java.lang.Integer.valueOf(5); "
+ " return n1+n2+n3+n4+n5; }";
String code3 = "{ int n1 = java.lang.Integer#valueOf(1); "
+ " int n2 = java.lang.Integer#valueOf(2); "
+ " int n3 = java.lang.Integer#valueOf(3); "
+ " int n4 = java.lang.Integer#valueOf(4); "
+ " int n5 = java.lang.Integer#valueOf(5); "
+ " return n1+n2+n3+n4+n5; }";
loop(cc, ccGet, code1);
}
public static void loop(CtClass cc, CtMethod ccGet, String code)
throws CannotCompileException {
long startTime = System.currentTimeMillis();
for (int replace = 0; replace < 1000; replace++) {
ccGet.setBody(code);
}
long endTime = System.currentTimeMillis();
System.out.println("Test: Time (ms) " + (endTime - startTime));
}
public static void implTestClassTailCache2() throws NotFoundException,
CannotCompileException {
ClassPool pool = new ClassPool(true);
for (int paths = 0; paths < 50; paths++) {
pool.appendClassPath(JAVASSIST_JAR);
pool.appendClassPath(CLASSES_FOLDER);
pool.appendClassPath(TEST_CLASSES_FOLDER);
}
CtClass cc = pool.get("Jassist150$Inner1");
CtMethod ccGet = cc.getDeclaredMethod("get");
String 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; }";
ccGet.setBody(code3);
}
public void testJIRA152() throws Exception {
CtClass cc = ClassPool.getDefault().get("test4.JIRA152");
CtMethod mth = cc.getDeclaredMethod("buildColumnOverride");
mth.instrument(new ExprEditor() {
public void edit(MethodCall c) throws CannotCompileException {
c.replace("try{ $_ = $proceed($$); } catch (Throwable t) { throw t; }");
}
});
mth.getMethodInfo().rebuildStackMap(ClassPool.getDefault());
cc.writeFile();
}
public static void main(String[] args) throws Exception {
new Jassist150().testJIRA152();
}
public static void main2(String[] args) {
for (int loop = 0; loop < 5; loop++) {
try {
implTestClassTailCache();
for (int i = 0; i < 100; i++)
implTestClassTailCache2();
} catch (Exception e) {
e.printStackTrace();
}
}
System.out.println("size: " + javassist.compiler.MemberResolver.getInvalidMapSize());
}
}
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