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Warn instad of crashing when class instance is gone after yield. Closes #5247 , probably closes other yield related crashes

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This commit is contained in:
Juan Linietsky 2016-06-29 21:06:16 -03:00
parent ff11401441
commit 36e754457f
3 changed files with 30 additions and 0 deletions
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25
modules/gdscript/gd_function.cpp
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@ -846,6 +846,8 @@ Variant GDFunction::call(GDInstance *p_instance, const Variant **p_args, int p_a
gdfs->state._class=_class;
gdfs->state.ip=ip+ipofs;
gdfs->state.line=line;
gdfs->state.instance_id=(p_instance && p_instance->get_owner())?p_instance->get_owner()->get_instance_ID():0;
gdfs->state.script_id=_class->get_instance_ID();
//gdfs->state.result_pos=ip+ipofs-1;
gdfs->state.defarg=defarg;
gdfs->state.instance=p_instance;
@ -1352,6 +1354,18 @@ GDFunction::~GDFunction() {
Variant GDFunctionState::_signal_callback(const Variant** p_args, int p_argcount, Variant::CallError& r_error) {
#ifdef DEBUG_ENABLED
if (state.instance_id && !ObjectDB::get_instance(state.instance_id)) {
ERR_EXPLAIN("Resumed after yield, but class instance is gone");
ERR_FAIL_V(Variant());
}
if (state.script_id && !ObjectDB::get_instance(state.script_id)) {
ERR_EXPLAIN("Resumed after yield, but script is gone");
ERR_FAIL_V(Variant());
}
#endif
Variant arg;
r_error.error=Variant::CallError::CALL_OK;
@ -1398,6 +1412,17 @@ bool GDFunctionState::is_valid() const {
Variant GDFunctionState::resume(const Variant& p_arg) {
ERR_FAIL_COND_V(!function,Variant());
#ifdef DEBUG_ENABLED
if (state.instance_id && !ObjectDB::get_instance(state.instance_id)) {
ERR_EXPLAIN("Resumed after yield, but class instance is gone");
ERR_FAIL_V(Variant());
}
if (state.script_id && !ObjectDB::get_instance(state.script_id)) {
ERR_EXPLAIN("Resumed after yield, but script is gone");
ERR_FAIL_V(Variant());
}
#endif
state.result=p_arg;
Variant::CallError err;

3
modules/gdscript/gd_function.h
View file

@ -136,6 +136,9 @@ public:
struct CallState {
ObjectID instance_id; //by debug only
ObjectID script_id;
GDInstance *instance;
Vector<uint8_t> stack;
int stack_size;

2
modules/gdscript/gd_script.h
View file

@ -202,6 +202,8 @@ friend class GDCompiler;
public:
_FORCE_INLINE_ Object* get_owner() { return owner; }
virtual bool set(const StringName& p_name, const Variant& p_value);
virtual bool get(const StringName& p_name, Variant &r_ret) const;
virtual void get_property_list(List<PropertyInfo> *p_properties) const;