ReturnOop VMEventModifier::new_modifier(PacketInputStream *in,
PacketOutputStream *out, bool& error) {
UsingFastOops fast_oops;
jbyte mod_kind = in->read_byte();
VMEventModifier::Fast newMod;
Thread::Fast thread;
newMod = allocate_modifier();
if (newMod.is_null()) {
error = true;
out->set_error(JDWP_Error_OUT_OF_MEMORY);
return NULL;
}
newMod().set_mod_kind(mod_kind);
#ifdef AZZERT
if (TraceDebugger) {
tty->print_cr("Modifier: modkind = %d", mod_kind);
}
#endif
switch(mod_kind) {
case JDWP_EventRequest_Set_Out_modifiers_Modifier_FieldOnly:
// unsupported
in->read_class_id();
in->read_class_id();
in->read_int();
return NULL;
case JDWP_EventRequest_Set_Out_modifiers_Modifier_Conditional:
// unsupported
in->read_int();
return NULL;
case JDWP_EventRequest_Set_Out_modifiers_Modifier_ClassExclude:
// unsupported
in->read_string();
return NULL;
case JDWP_EventRequest_Set_Out_modifiers_Modifier_ThreadOnly:
newMod().set_thread_id(in->read_thread_id());
return newMod;
case JDWP_EventRequest_Set_Out_modifiers_Modifier_Count:
newMod().set_count(in->read_int());
return newMod;
case JDWP_EventRequest_Set_Out_modifiers_Modifier_ClassOnly:
{
newMod().set_clazz_id(in->read_class_id());
#ifdef AZZERT
if (TraceDebugger) {
tty->print_cr("Modifier: class_id = %d", newMod().clazz_id());
}
#endif
return newMod;
}
case JDWP_EventRequest_Set_Out_modifiers_Modifier_ClassMatch:
{
UsingFastOops fast_oops_2;
int length;
SETUP_ERROR_CHECKER_ARG;
TypeArray::Fast ta = in->read_raw_string(length JVM_NO_CHECK);
if (ta.is_null()) {
// Out of memory?? Things will fall apart soon enough,
// We just punt on this modifier
return newMod;
}
for (int i = length - 1; i >= 0; i--) {
if (ta().byte_at(i) == '.') {
ta().byte_at_put(i, '/');
}
}
Symbol::Fast tmpName = Universe::new_symbol(&ta,
(utf8)(ta().base_address()), length JVM_NO_CHECK);
if (tmpName.is_null()) {
error = true;
out->set_error(JDWP_Error_OUT_OF_MEMORY);
return NULL;
}
#ifdef AZZERT
if (TraceDebugger) {
tty->print("Modifier: class match = ");
tmpName().print_symbol_on(tty);
tty->cr();
}
#endif
ClassMatchModifier::Fast class_match_modifier = newMod().obj();
class_match_modifier().set_class_match_name(&tmpName);
return newMod;
}
case JDWP_EventRequest_Set_Out_modifiers_Modifier_LocationOnly:
{
UsingFastOops fast_oops_3;
jbyte tag = in->read_byte(); (void)tag;
LocationModifier::Fast lmod = newMod.obj();
lmod().set_clazz_id(in->read_class_id());
if (lmod().clazz_id() == 0) {
return NULL; /* Class ID == 0 is invalid */
}
lmod().set_method_id(in->read_method_id());
lmod().set_offset(in->read_long());
#ifdef AZZERT
if (TraceDebugger) {
tty->print_cr("Loc: class: 0x%x, method: 0x%x, off: 0x%x",
lmod().clazz_id(),
(int)(lmod().method_id() & 0xFFFFFFFF),
lmod().offset());
}
#endif
return lmod;
}
case JDWP_EventRequest_Set_Out_modifiers_Modifier_ExceptionOnly:
{
UsingFastOops fast_oops_4;
ExceptionModifier::Fast emod = newMod.obj();
emod().set_clazz_id(in->read_class_id());
emod().set_sig_caught(in->read_boolean());
emod().set_sig_uncaught(in->read_boolean());
return emod;
}
case JDWP_EventRequest_Set_Out_modifiers_Modifier_Step:
{
UsingFastOops fast_oops_5;
int thread_id = in->read_thread_id();
thread = JavaDebugger::get_thread_by_id(thread_id);
if (!JavaDebugger::is_valid_thread(&thread) ||
!thread().last_java_frame_exists()) {
error = true;
out->set_error(JDWP_Error_INVALID_THREAD);
return NULL;
}
Frame fr(&thread);
GUARANTEE(fr.is_java_frame(), "Single step must start at JavaFrame");
JavaFrame jf = fr.as_JavaFrame();
LocationModifier::Fast loc = LocationModifier::new_location(&jf);
if (loc.is_null()) {
error = true;
out->set_error(JDWP_Error_OUT_OF_MEMORY);
return NULL;
}
#ifdef AZZERT
if (TraceDebugger) {
tty->print_cr("StepLoc: thread: 0x%x, class: 0x%x, method: 0x%x, off: 0x%x",
thread_id, loc().clazz_id(),
(int)(loc().method_id() & 0xFFFFFFFF),
loc().offset());
}
#endif
loc().set_mod_kind(mod_kind);
StepModifier::Fast smod = loc.obj();
smod().set_thread_id(thread_id);
if (thread.is_null() /* || (thread.state() & THREAD_DEAD) */) {
/*
* If you try to single step after suspending because
* of an uncaught exception event we'll get sent the
* thread id of the thread that had the exception.
* That thread is dead though.
*/
error = true;
out->set_error(JDWP_Error_INVALID_THREAD);
return NULL;
}
smod().set_step_size(in->read_int());
smod().set_step_depth(in->read_int());
/* query the _proxy_ for next line location */
{
UsingFastOops fast_oops_6;
DebuggerEvent d_event;
d_event.set_event_kind((jbyte)VM_STEPINFO_EVENT);
VMEvent::stepping_info_request(&d_event, in->transport(),
&smod);
/*
* At this point, the proxy has made sure no more commands
* from the debugger get sent until we get our line number
* info from the proxy
*/
JavaDebugger::set_loop_count(1);
JavaDebugger::process_command_loop();
/*
* Once we get back here, then we know we've gotten the
* command from the proxy with the line number info put into
* the StepModifier object in the step_info_event above.
*/
/* setup the relevant info */
thread().set_is_stepping(true);
// set the _debugger_active flag for the interpreter loop
JavaDebugger::set_stepping(true);
// smod = step_info_event().mods();
// smod().set_step_target_offset(stepData().step_target_offset());
smod().unlink_method();
if (smod().step_depth() == JDWP_StepDepth_OUT) {
// if stepping out to the caller, we really should unlink any
// compiled code from here to the caller frame, for now assume
// one frame up. It could be re-compiled but we may luck out.
Method::Fast m;
Frame caller(jf);
jf.caller_is(caller);
if (!caller.is_entry_frame()) {
m = caller.as_JavaFrame().method();
#if ENABLE_COMPILER
if (m().has_compiled_code()) {
m().unlink_compiled_code();
}
#endif
}
}
smod().set_step_starting_fp(DISTANCE(thread().stack_base(), jf.fp()));
smod().set_step_starting_offset(jf.bci());
// smod().set_dup_current_line_offset(stepData().dup_current_line_offset());
// smod().set_post_dup_line_offset(stepData().post_dup_line_offset());
thread().set_step_info(&smod);
}
return smod;
}
}
error = true;
out->set_error(JDWP_Error_NOT_IMPLEMENTED);
return NULL;
}
void ReferenceTypeImpl::static_field_getter_setter(PacketInputStream *in,
PacketOutputStream *out,
bool is_setter)
{
UsingFastOops fast_oops;
InstanceClass::Fast clazz = in->read_class_ref();
jint num = in->read_int();
int i;
#ifdef AZZERT
if (TraceDebugger) {
tty->print_cr("Static %s: class=0x%lx, count=%ld",
(is_setter ? "Set" : "Get"),
clazz.obj(), num);
}
#endif
// Prevent compiler warnings
clazz = clazz;
// Create a buffered output stream so we can asynchronously send an error
// Calculate the size based on half of the items being 'longs'
if (!is_setter) {
out->write_int(num);
}
for (i = 0; i < num; i++) {
UsingFastOops fast_oops_2;
InstanceClass::Fast field_clazz = in->read_class_ref();
TypeArray::Fast fields;
jint field_id = in->read_int();
char type_tag;
if (field_clazz.is_null()) {
out->send_error(JDWP_Error_INVALID_FIELDID);
return;
}
fields = field_clazz().fields();
if (fields.is_null()) {
out->send_error(JDWP_Error_INVALID_FIELDID);
return;
}
if (field_id >= fields().length() / Field::NUMBER_OF_SLOTS) {
out->send_error(JDWP_Error_INVALID_FIELDID);
return;
}
Field field(&field_clazz, field_id * Field::NUMBER_OF_SLOTS);
if (!field.is_static() || (is_setter && field.is_final())) {
out->send_error(JDWP_Error_INVALID_FIELDID);
return;
}
type_tag = (field.type() < T_OBJECT )
? JavaDebugger::get_tag_from_type(field.type())
: JDWP_Tag_OBJECT;
Oop::Fast p;
#if ENABLE_ISOLATES
// Statics don't live at the end of the JavaClassDesc, we need to
// find the correct task mirror for this task
{
SETUP_ERROR_CHECKER_ARG;
TaskGCContext tmp(in->transport()->task_id());
TaskMirror::Fast tm = field_clazz().task_mirror_no_check();
if (!TaskMirrorDesc::is_initialized_mirror((TaskMirrorDesc*)tm.obj())) {
GUARANTEE(field_clazz().is_interface(),
"Non-interface class not initialized");
if (field_clazz().is_interface()) {
SAVE_CURRENT_EXCEPTION;
// If an interface contains only non-object data then
// it will not get initialized since javac will only
// create a reference to the interface class if you
// are accessing some static object like a static array
// We need to at least initialized the statics
tm = task_barrier(Thread::current(), field_clazz.obj() JVM_NO_CHECK);
if (tm.is_null()) {
// oome
RESTORE_CURRENT_EXCEPTION;
out->send_error(JDWP_Error_OUT_OF_MEMORY);
return;
}
RESTORE_CURRENT_EXCEPTION;
}
}
p = tm();
}
#else
p = field_clazz();
#endif
if (is_setter) {
ObjectReferenceImpl::read_value_to_address(in, &p,
field.offset(),
type_tag, true);
} else {
ObjectReferenceImpl::write_value_from_address(out, &p,
field.offset(),
type_tag, true, true);
}
#ifdef AZZERT
if (TraceDebugger) {
tty->print(" ");
JavaDebugger::print_class(&field_clazz);
tty->print(".");
JavaDebugger::print_field(&field);
tty->print(": ");
ObjectReferenceImpl::print_value_from_address(&p,
field.offset(),
type_tag);
tty->print_cr("");
}
#endif
}
out->send_packet();
}
void ObjectReferenceImpl::object_field_getter_setter(PacketInputStream *in,
PacketOutputStream *out,
bool is_setter)
{
UsingFastOops fast_oops;
int i;
Oop::Fast object = in->read_object();
jint num = in->read_int();
if (object.is_null()) {
out->send_error(JDWP_Error_INVALID_OBJECT);
return;
}
// Create a buffered output stream so we can asynchronously send an error
// Calculate the size based on half of the items being 'longs'
#ifdef AZZERT
if (TraceDebugger) {
tty->print_cr("Object %s, objectID=%ld, object=0x%lx, count=%ld",
(is_setter ? "Set" : "Get"),
JavaDebugger::get_object_id_by_ref_nocreate(&object),
object.obj(), num);
}
#endif
if (!is_setter) {
out->write_int(num);
}
for (i = 0; i < num; i++) {
UsingFastOops fast_oops_2;
InstanceClass::Fast fieldClazz = in->read_class_ref();
TypeArray::Fast fields;
jint field_id = in->read_int();
if (fieldClazz.is_null()) {
out->send_error(JDWP_Error_INVALID_FIELDID);
return;
}
fields = fieldClazz().fields();
if (fields.is_null()) {
out->send_error(JDWP_Error_INVALID_FIELDID);
return;
}
if (field_id >=fields().length() / Field::NUMBER_OF_SLOTS) {
out->send_error(JDWP_Error_INVALID_FIELDID);
return;
}
Field field(&fieldClazz, field_id * Field::NUMBER_OF_SLOTS);
char type_tag = (field.type() < T_OBJECT)
? JavaDebugger::get_tag_from_type(field.type())
: JDWP_Tag_OBJECT;
if (is_setter) {
read_value_to_address(in, &object, field.offset(), type_tag, false);
} else {
write_value_from_address(out, &object, field.offset(), type_tag, true, false);
}
#ifdef AZZERT
if (TraceDebugger) {
//AccessFlags field_access_flags = field.access_flags();
tty->print(" ");
JavaDebugger::print_class(&fieldClazz),
tty->print(".");
JavaDebugger::print_field(&field);
tty->print(": ");
print_value_from_address(&object, field.offset(), type_tag);
tty->print_cr("");
}
#endif
}
out->send_packet();
}
void VMEvent::exception_event(Throwable *exception,
JavaFrame *catch_frame,
DebuggerEvent *d_event, int catch_offset)
{
check_notify_wanted(Dbg_EventKind_EXCEPTION);
UsingFastOops fast_oops;
VMEvent::Fast ep, ep_2;
jlong throw_offset = 0;
int event_count = 0;
jbyte suspend_policy = JDWP_SuspendPolicy_NONE;
InstanceClass::Fast ic;
LocationModifier::Fast location;
Method::Fast catch_method;
Method::Fast throw_method;
int data_len = JDWP_EVENT_LEN;
ep = ep_2 = get_event_request(d_event, event_count, suspend_policy);
if (ep.is_null()) {
return;
}
// Flush any packets waiting in the queue. This helps avoid a race
// condition where we may have a resume command in the queue for a
// previous event, we send this event, process the resume command
// out of order
JavaDebugger::dispatch(0);
// Calculate packet length
data_len += (JDWP_EVENT_EXCEPTION_LEN * event_count);
Transport::Fast transport = ep().transport();
PacketOutputStream out(&transport, data_len, JDWP_COMMAND_SET(Event),
JDWP_COMMAND(Event, Composite));
// Create a buffered output stream so we can asynchronously send an error
// Calculate the size based on half of the items being 'longs'
UsingFastOops fast_oops_2;
Thread::Fast thread = JavaDebugger::get_thread_by_id(d_event->thread_id());
VMEventModifier::deoptimize_frame(&thread, true);
VMEvent::Fast info_event = find_event((jbyte)VM_EXCEPTION_INFO_EVENT);
if (!info_event.is_null()) {
location = get_modifier(&info_event,
JDWP_EventRequest_Set_Out_modifiers_Modifier_LocationOnly);
GUARANTEE(!location.is_null(), "No location modifier in info event");
throw_method = location().method();
throw_offset = location().offset();
remove_event_request(&info_event);
} else {
UsingFastOops fast_oops_3;
ObjArray::Fast trace, methods;
TypeArray::Fast offsets;
trace = exception->backtrace();
if (!trace.is_null()) {
methods = trace().obj_at(0);
offsets = trace().obj_at(1);
if (!methods.is_null() && !offsets.is_null()) {
throw_method = methods().obj_at(0);
throw_offset = (jlong)(offsets().int_at(0));
}
}
}
DEBUGGER_EVENT(("Exception"));
out.write_byte(suspend_policy);
out.write_int(event_count);
while (ep.not_null()) {
out.write_byte(JDWP_EventKind_EXCEPTION);
out.write_int(ep().event_id());
// thread with exception
out.write_int(d_event->thread_id());
// location of exception throw
if (throw_method.not_null()) {
ic = throw_method().holder();
}
DebuggerEvent throw_event(JDWP_EventKind_EXCEPTION,
0, // don't need thread
JavaDebugger::get_object_id_by_ref(&ic),
JavaDebugger::get_method_id(&ic, &throw_method),
(jlong)throw_offset);
throw_event.write_as_location(&out);
// thrown exception
out.write_byte('L');
out.write_object(exception);
// location of catch, or 0 if not caught
if (catch_frame == NULL) {
LocationModifier::write_null_location(&out);
} else {
catch_method = catch_frame->method();
ic = catch_method().holder();
DebuggerEvent catch_event(JDWP_EventKind_EXCEPTION,
0, // don't need thread
JavaDebugger::get_object_id_by_ref(&ic),
JavaDebugger::get_method_id(&ic, &catch_method),
(jlong)catch_offset);
catch_event.write_as_location(&out);
}
ep = ep().send_next();
}
out.send_packet();
JavaDebugger::process_suspend_policy(suspend_policy, &thread,
true);
}
