synchronized VirtualMachine open() {
if (connector instanceof LaunchingConnector) {
vm = launchTarget();
} else if (connector instanceof AttachingConnector) {
vm = attachTarget();
} else if (connector instanceof ListeningConnector) {
vm = listenTarget();
} else {
throw new InternalError(MessageOutput.format("Invalid connect type"));
}
vm.setDebugTraceMode(traceFlags);
if (vm.canBeModified()) {
setEventRequests(vm);
resolveEventRequests();
}
/*
* Now that the vm connection is open, fetch the debugee
* classpath and set up a default sourcepath.
* (Unless user supplied a sourcepath on the command line)
* (Bug ID 4186582)
*/
if (Env.getSourcePath().length() == 0) {
if (vm instanceof PathSearchingVirtualMachine) {
PathSearchingVirtualMachine psvm = (PathSearchingVirtualMachine) vm;
Env.setSourcePath(psvm.classPath());
} else {
Env.setSourcePath(".");
}
}
return vm;
}
private void checkClassName(String className) throws ClassNotFoundException {
// Do stricter checking of class name validity on deferred
// because if the name is invalid, it will
// never match a future loaded class, and we'll be silent
// about it.
StringTokenizer tokenizer = new StringTokenizer(className, ".");
while (tokenizer.hasMoreTokens()) {
String token = tokenizer.nextToken();
// Each dot-separated piece must be a valid identifier
// and the first token can also be "*".
if (!isJavaIdentifier(token)
&& (tokenizer.hasMoreTokens() || !isAnonymousClassSuffix(token))) {
throw new ClassNotFoundException();
}
}
if (!classIsPlausible()) Env.noticeln("Warning: class %s does not seem to exist.", classId);
}
/**
* False iff there is some evidence that no class described by this pattern exists in the
* classpath. Conservatively returns true for patterns containing "*", for cases where the virtual
* machine is not a PathSearchingVirtualMachine, and for anonymous classes for a parent class
* exists.
*/
boolean classIsPlausible() {
if (classId.startsWith("*")
|| classId.endsWith("*")
|| !(Env.vm() instanceof PathSearchingVirtualMachine)) return true;
else return Env.classMayExist(transClassId);
}