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Redo how instance bindings work

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* The harcoded 8 slots are no more and impose limits in the new extension system.
* New system is limitless, although it will impose small performance hit with a mutex.
* Use a token to request the instance binding.

**Warning**: Mono will most likely break as a result of this, will need to be modified to use the new system.
This commit is contained in:
reduz
2021-07-08 16:16:02 -03:00
parent d4e5fe6c44
commit 4469144891
11 changed files with 111 additions and 62 deletions
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61
core/object/object.cpp
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@@ -1769,42 +1769,41 @@ uint32_t Object::get_edited_version() const {
}
#endif
void *Object::get_script_instance_binding(int p_script_language_index) {
#ifdef DEBUG_ENABLED
ERR_FAIL_INDEX_V(p_script_language_index, MAX_SCRIPT_INSTANCE_BINDINGS, nullptr);
#endif
//it's up to the script language to make this thread safe, if the function is called twice due to threads being out of sync
//just return the same pointer.
//if you want to put a big lock in the entire function and keep allocated pointers in a map or something, feel free to do it
//as it should not really affect performance much (won't be called too often), as in far most cases the condition below will be false afterwards
if (!_script_instance_bindings[p_script_language_index]) {
void *script_data = ScriptServer::get_language(p_script_language_index)->alloc_instance_binding_data(this);
if (script_data) {
instance_binding_count.increment();
_script_instance_bindings[p_script_language_index] = script_data;
void *Object::get_instance_binding(void *p_token, const GDNativeInstanceBindingCallbacks *p_callbacks) {
void *binding = nullptr;
_instance_binding_mutex.lock();
for (uint32_t i = 0; i < _instance_binding_count; i++) {
if (_instance_bindings[i].token == p_token) {
binding = _instance_bindings[i].binding;
break;
}
}
if (unlikely(!binding)) {
uint32_t current_size = next_power_of_2(_instance_binding_count);
uint32_t new_size = next_power_of_2(_instance_binding_count + 1);
return _script_instance_bindings[p_script_language_index];
}
if (current_size == 0 || new_size > current_size) {
_instance_bindings = (InstanceBinding *)memrealloc(_instance_bindings, new_size * sizeof(InstanceBinding));
}
bool Object::has_script_instance_binding(int p_script_language_index) {
return _script_instance_bindings[p_script_language_index] != nullptr;
}
_instance_bindings[_instance_binding_count].free_callback = p_callbacks->free_callback;
_instance_bindings[_instance_binding_count].reference_callback = p_callbacks->reference_callback;
_instance_bindings[_instance_binding_count].token = p_token;
void Object::set_script_instance_binding(int p_script_language_index, void *p_data) {
#ifdef DEBUG_ENABLED
CRASH_COND(_script_instance_bindings[p_script_language_index] != nullptr);
#endif
_script_instance_bindings[p_script_language_index] = p_data;
binding = p_callbacks->create_callback(p_token, this);
_instance_bindings[_instance_binding_count].binding = binding;
_instance_binding_count++;
}
_instance_binding_mutex.unlock();
return binding;
}
void Object::_construct_object(bool p_reference) {
type_is_reference = p_reference;
_instance_id = ObjectDB::add_instance(this);
memset(_script_instance_bindings, 0, sizeof(void *) * MAX_SCRIPT_INSTANCE_BINDINGS);
ClassDB::instance_get_native_extension_data(&_extension, &_extension_instance);
@@ -1864,12 +1863,13 @@ Object::~Object() {
_instance_id = ObjectID();
_predelete_ok = 2;
if (!ScriptServer::are_languages_finished()) {
for (int i = 0; i < MAX_SCRIPT_INSTANCE_BINDINGS; i++) {
if (_script_instance_bindings[i]) {
ScriptServer::get_language(i)->free_instance_binding_data(_script_instance_bindings[i]);
if (_instance_bindings != nullptr) {
for (uint32_t i = 0; i < _instance_binding_count; i++) {
if (_instance_bindings[i].free_callback) {
_instance_bindings[i].free_callback(_instance_bindings[i].token, _instance_bindings[i].binding, this);
}
}
memfree(_instance_bindings);
}
}
@@ -1887,7 +1887,6 @@ void ObjectDB::debug_objects(DebugFunc p_func) {
for (uint32_t i = 0, count = slot_count; i < slot_max && count != 0; i++) {
if (object_slots[i].validator) {
p_func(object_slots[i].object);
count--;
}
}