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;
}
/* launch child target vm */
private VirtualMachine launchTarget() {
LaunchingConnector launcher = (LaunchingConnector) connector;
try {
VirtualMachine vm = launcher.launch(connectorArgs);
process = vm.process();
displayRemoteOutput(process.getErrorStream());
displayRemoteOutput(process.getInputStream());
return vm;
} catch (IOException ioe) {
ioe.printStackTrace();
MessageOutput.fatalError("Unable to launch target VM.");
} catch (IllegalConnectorArgumentsException icae) {
icae.printStackTrace();
MessageOutput.fatalError("Internal debugger error.");
} catch (VMStartException vmse) {
MessageOutput.println("vmstartexception", vmse.getMessage());
MessageOutput.println();
dumpFailedLaunchInfo(vmse.process());
MessageOutput.fatalError("Target VM failed to initialize.");
}
return null; // Shuts up the compiler
}
public void disposeVM() {
try {
if (vm != null) {
vm.dispose();
vm = null;
}
} finally {
if (process != null) {
process.destroy();
process = null;
}
waitOutputComplete();
}
}
private void setEventRequests(VirtualMachine vm) {
EventRequestManager erm = vm.eventRequestManager();
// Normally, we want all uncaught exceptions. We request them
// via the same mechanism as Commands.commandCatchException()
// so the user can ignore them later if they are not
// interested.
// FIXME: this works but generates spurious messages on stdout
// during startup:
// Set uncaught j86.java.lang.Throwable
// Set deferred uncaught j86.java.lang.Throwable
Commands evaluator = new Commands();
evaluator.commandCatchException(new StringTokenizer("uncaught j86.java.lang.Throwable"));
ThreadStartRequest tsr = erm.createThreadStartRequest();
tsr.enable();
ThreadDeathRequest tdr = erm.createThreadDeathRequest();
tdr.enable();
}