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 VMEvent::send_event(DebuggerEvent *d_event) {
check_notify_wanted(JDWP_eventkind_to_dbg_eventkind(d_event->event_kind()));
UsingFastOops fast_oops;
VMEvent::Fast ep, ep_2;
JavaClass::Fast jc;
int event_count = 0;
jbyte suspend_policy = JDWP_SuspendPolicy_NONE;
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
while (ep_2.not_null()) {
switch(ep_2().event_kind()) {
case JDWP_EventKind_SINGLE_STEP:
case JDWP_EventKind_BREAKPOINT:
data_len += JDWP_EVENT_BREAK_LEN;
break;
case JDWP_EventKind_THREAD_START:
case JDWP_EventKind_THREAD_DEATH:
data_len += JDWP_EVENT_THREAD_LEN;
break;
case JDWP_EventKind_CLASS_PREPARE:
case JDWP_EventKind_CLASS_LOAD:
jc = JavaDebugger::get_object_by_id(d_event->clazz_id());
data_len += (9 + class_prepare_info_length(&jc));
break;
case JDWP_EventKind_CLASS_UNLOAD:
jc = JavaDebugger::get_object_by_id(d_event->clazz_id());
data_len += (5 + PacketOutputStream::get_class_name_length(&jc));
break;
}
ep_2 = ep_2().send_next();
}
Transport::Fast transport = ep().transport();
PacketOutputStream out(&transport, data_len, JDWP_COMMAND_SET(Event),
JDWP_COMMAND(Event, Composite));
UsingFastOops fast_oops_2;
Thread::Fast thread = JavaDebugger::get_thread_by_id(d_event->thread_id());
if (thread.is_null()) {
// Some events were created before any threads were ready, so just
// use the current thread
thread = Thread::current();
}
DEBUGGER_EVENT(("VM Event xprt=0x%x, thrd=0x%x, id=0x%x, kind=0x%x, susp.=0x%x",
transport.obj(), d_event->thread_id(),
ep().event_id(), ep().event_kind(), suspend_policy));
out.write_byte(suspend_policy);
out.write_int(event_count);
while (ep.not_null()) {
// transport = ep().transport();
// out.set_transport(&transport);
out.write_byte(ep().event_kind());
out.write_int(ep().event_id());
switch(ep().event_kind()) {
case JDWP_EventKind_SINGLE_STEP:
case JDWP_EventKind_BREAKPOINT:
{
UsingFastOops fast_oops_3;
out.write_int(d_event->thread_id());
DEBUGGER_EVENT(("Event clss=0x%x, mthd=0x%x, off=0x%x",
d_event->clazz_id(),
(int)(d_event->method_id() & 0xFFFFFFFF),
d_event->offset()));
#ifdef AZZERT
if (TraceDebugger) {
InstanceClass::Raw ic = JavaDebugger::get_object_by_id(d_event->clazz_id());
Method::Raw m = JavaDebugger::get_method_by_id(&ic, d_event->method_id());
m().print_name_on(tty);
tty->cr();
}
#endif
d_event->write_as_location(&out);
// IMPL_NOTE: I don't think we can ever get here with a compiled frame
VMEventModifier::deoptimize_frame(&thread);
break;
}
case JDWP_EventKind_THREAD_START:
case JDWP_EventKind_THREAD_DEATH:
out.write_int(d_event->thread_id());
break;
case JDWP_EventKind_CLASS_PREPARE:
case JDWP_EventKind_CLASS_LOAD:
{
out.write_int(d_event->thread_id());
DEBUGGER_EVENT(("Event clss=0x%x", d_event->clazz_id()));
jc = JavaDebugger::get_object_by_id(d_event->clazz_id());
#ifdef AZZERT
if (TraceDebugger) {
jc().print_name_on(tty);
tty->cr();
}
#endif
out.write_class_prepare_info(&jc);
break;
}
case JDWP_EventKind_CLASS_UNLOAD:
{
jc = JavaDebugger::get_object_by_id(d_event->clazz_id());
out.write_class_name(&jc);
break;
}
}
ep = ep().send_next();
}
out.send_packet();
JavaDebugger::process_suspend_policy(suspend_policy, &thread, false);
}