public static void redefine(Collection<ClassDefinition> classDefinitions) {
try {
instrumentation.redefineClasses(classDefinitions.toArray(new ClassDefinition[0]));
} catch (Exception e) {
throw new RuntimeException(e);
}
}
public static void doAgent(String agentArgs, Instrumentation inst) {
HashMap<String, HashSet<String>> def = null;
try {
def = getDefinitionFile(agentArgs);
} catch (Exception e) {
}
ExecutionRecordInnovator innovator = new ExecutionRecordInnovator(def);
ArrayList<ClassDefinition> classDefList = new ArrayList<ClassDefinition>();
for (String className : def.keySet()) {
try {
byte[] classBytes = innovator.innovate(className);
if (classBytes == null) {
continue;
}
ClassDefinition classDef =
new ClassDefinition(Class.forName(className.replace('/', '.')), classBytes);
classDefList.add(classDef);
} catch (Exception e) {
e.printStackTrace();
}
}
HashMap<String, ClassInnovator> innovatePlan = new HashMap<String, ClassInnovator>();
String statClass = "oracle/jdbc/driver/OraclePreparedStatement";
innovatePlan.put(statClass, new JDBCStatementInnovator(statClass));
statClass = "oracle/jdbc/driver/T4CPreparedStatement";
innovatePlan.put(statClass, new JDBCStatementInnovator(statClass));
for (String className : innovatePlan.keySet()) {
ClassInnovator transformer1 = innovatePlan.get(className);
byte[] classBytes = getClassBytes(className);
if (classBytes != null) {
classBytes = transformer1.innovate(className);
try {
ClassDefinition classDef =
new ClassDefinition(Class.forName(className.replace('/', '.')), classBytes);
classDefList.add(classDef);
} catch (Exception e) {
}
}
}
if (!classDefList.isEmpty()) {
ClassDefinition[] classDefArr = new ClassDefinition[classDefList.size()];
try {
inst.redefineClasses(classDefList.toArray(classDefArr));
} catch (ClassNotFoundException e) {
e.printStackTrace();
} catch (UnmodifiableClassException e) {
e.printStackTrace();
}
}
}
public static void premain(String args, Instrumentation inst) throws Exception {
try {
String[] agentArgs;
if (args == null) agentArgs = new String[] {""};
else agentArgs = args.split(",");
if (!agentArgs[0].equals("instrumenting")) jarFileName = agentArgs[0];
BaseClassTransformer rct = null;
rct = new BaseClassTransformer();
if (agentArgs[0].equals("instrumenting")) {
initVMClasses = new HashSet<String>();
for (Class<?> c : inst.getAllLoadedClasses()) {
((Set<String>) initVMClasses).add(c.getName());
}
}
if (!agentArgs[0].equals("instrumenting")) {
inst.addTransformer(rct);
Tracer.setLocals(new CounterThreadLocal());
Tracer.overrideAll(true);
for (Class<?> c : inst.getAllLoadedClasses()) {
try {
if (c.isInterface()) continue;
if (c.isArray()) continue;
byte[] bytes = rct.getBytes(c.getName());
if (bytes == null) {
continue;
}
inst.redefineClasses(new ClassDefinition[] {new ClassDefinition(c, bytes)});
} catch (Throwable e) {
synchronized (System.err) {
System.err.println("" + c + " failed...");
e.printStackTrace();
}
}
}
Runtime.getRuntime()
.addShutdownHook(
new Thread() {
public void run() {
Tracer.mark();
try {
PrintStream ps = new PrintStream("bailout.txt");
ps.println("Bailouts: " + Tracer.getBailoutCount());
ps.close();
} catch (Exception e) {
}
Tracer.unmark();
}
});
if ("true".equals(System.getProperty("bci.observerOn"))) Tracer.overrideAll(false);
}
} catch (Exception e) {
e.printStackTrace();
}
}
