diff options
Diffstat (limited to 'core/extension/native_extension_manager.cpp')
| -rw-r--r-- | core/extension/native_extension_manager.cpp | 130 |
1 files changed, 130 insertions, 0 deletions
diff --git a/core/extension/native_extension_manager.cpp b/core/extension/native_extension_manager.cpp new file mode 100644 index 0000000000..7be2593845 --- /dev/null +++ b/core/extension/native_extension_manager.cpp @@ -0,0 +1,130 @@ +/*************************************************************************/ +/* native_extension_manager.cpp */ +/*************************************************************************/ +/* This file is part of: */ +/* GODOT ENGINE */ +/* https://godotengine.org */ +/*************************************************************************/ +/* Copyright (c) 2007-2021 Juan Linietsky, Ariel Manzur. */ +/* Copyright (c) 2014-2021 Godot Engine contributors (cf. AUTHORS.md). */ +/* */ +/* Permission is hereby granted, free of charge, to any person obtaining */ +/* a copy of this software and associated documentation files (the */ +/* "Software"), to deal in the Software without restriction, including */ +/* without limitation the rights to use, copy, modify, merge, publish, */ +/* distribute, sublicense, and/or sell copies of the Software, and to */ +/* permit persons to whom the Software is furnished to do so, subject to */ +/* the following conditions: */ +/* */ +/* The above copyright notice and this permission notice shall be */ +/* included in all copies or substantial portions of the Software. */ +/* */ +/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */ +/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */ +/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/ +/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */ +/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */ +/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */ +/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */ +/*************************************************************************/ + +#include "native_extension_manager.h" + +NativeExtensionManager::LoadStatus NativeExtensionManager::load_extension(const String &p_path) { + if (native_extension_map.has(p_path)) { + return LOAD_STATUS_ALREADY_LOADED; + } + Ref<NativeExtension> extension = ResourceLoader::load(p_path); + if (extension.is_null()) { + return LOAD_STATUS_FAILED; + } + + if (level >= 0) { //already initialized up to some level + int32_t minimum_level = extension->get_minimum_library_initialization_level(); + if (minimum_level < MIN(level, NativeExtension::INITIALIZATION_LEVEL_SCENE)) { + return LOAD_STATUS_NEEDS_RESTART; + } + //initialize up to current level + for (int32_t i = minimum_level; i < level; i++) { + extension->initialize_library(NativeExtension::InitializationLevel(level)); + } + } + native_extension_map[p_path] = extension; + return LOAD_STATUS_OK; +} + +NativeExtensionManager::LoadStatus NativeExtensionManager::reload_extension(const String &p_path) { + return LOAD_STATUS_OK; //TODO +} +NativeExtensionManager::LoadStatus NativeExtensionManager::unload_extension(const String &p_path) { + if (!native_extension_map.has(p_path)) { + return LOAD_STATUS_NOT_LOADED; + } + + Ref<NativeExtension> extension = native_extension_map[p_path]; + + if (level >= 0) { //already initialized up to some level + int32_t minimum_level = extension->get_minimum_library_initialization_level(); + if (minimum_level < MIN(level, NativeExtension::INITIALIZATION_LEVEL_SCENE)) { + return LOAD_STATUS_NEEDS_RESTART; + } + //initialize up to current level + for (int32_t i = level; i >= minimum_level; i--) { + extension->deinitialize_library(NativeExtension::InitializationLevel(level)); + } + } + native_extension_map.erase(p_path); + return LOAD_STATUS_OK; +} +Vector<String> NativeExtensionManager::get_loaded_extensions() const { + Vector<String> ret; + for (const Map<String, Ref<NativeExtension>>::Element *E = native_extension_map.front(); E; E = E->next()) { + ret.push_back(E->key()); + } + return ret; +} +Ref<NativeExtension> NativeExtensionManager::get_extension(const String &p_path) { + Map<String, Ref<NativeExtension>>::Element *E = native_extension_map.find(p_path); + ERR_FAIL_COND_V(!E, Ref<NativeExtension>()); + return E->get(); +} + +void NativeExtensionManager::initialize_extensions(NativeExtension::InitializationLevel p_level) { + ERR_FAIL_COND(int32_t(p_level) - 1 != level); + for (Map<String, Ref<NativeExtension>>::Element *E = native_extension_map.front(); E; E = E->next()) { + E->get()->initialize_library(p_level); + } + level = p_level; +} + +void NativeExtensionManager::deinitialize_extensions(NativeExtension::InitializationLevel p_level) { + ERR_FAIL_COND(int32_t(p_level) != level); + for (Map<String, Ref<NativeExtension>>::Element *E = native_extension_map.front(); E; E = E->next()) { + E->get()->deinitialize_library(p_level); + } + level = int32_t(p_level) - 1; +} + +NativeExtensionManager *NativeExtensionManager::get_singleton() { + return singleton; +} +void NativeExtensionManager::_bind_methods() { + ClassDB::bind_method(D_METHOD("load_extension", "path"), &NativeExtensionManager::load_extension); + ClassDB::bind_method(D_METHOD("reload_extension", "path"), &NativeExtensionManager::reload_extension); + ClassDB::bind_method(D_METHOD("unload_extension", "path"), &NativeExtensionManager::unload_extension); + ClassDB::bind_method(D_METHOD("get_loaded_extensions"), &NativeExtensionManager::get_loaded_extensions); + ClassDB::bind_method(D_METHOD("get_extension", "path"), &NativeExtensionManager::get_extension); + + BIND_ENUM_CONSTANT(LOAD_STATUS_OK); + BIND_ENUM_CONSTANT(LOAD_STATUS_FAILED); + BIND_ENUM_CONSTANT(LOAD_STATUS_ALREADY_LOADED); + BIND_ENUM_CONSTANT(LOAD_STATUS_NOT_LOADED); + BIND_ENUM_CONSTANT(LOAD_STATUS_NEEDS_RESTART); +} + +NativeExtensionManager *NativeExtensionManager::singleton = nullptr; + +NativeExtensionManager::NativeExtensionManager() { + ERR_FAIL_COND(singleton != nullptr); + singleton = this; +} |