godot/core/resource.cpp
Pedro J. Estébanez b450036120 Modernize RWLock
- Based on C++14's `shared_time_mutex`
- No more need to allocate-deallocate or check for null
- No pointer anymore, just a member variable
- Platform-specific implementations no longer needed
- Simpler for `NO_THREADS`
2021-02-18 11:41:07 +01:00

552 lines
14 KiB
C++

/*************************************************************************/
/* resource.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 "resource.h"
#include "core/core_string_names.h"
#include "core/io/resource_loader.h"
#include "core/os/file_access.h"
#include "core/os/os.h"
#include "core/script_language.h"
#include "scene/main/node.h" //only so casting works
#include <stdio.h>
void Resource::emit_changed() {
emit_signal(CoreStringNames::get_singleton()->changed);
}
void Resource::_resource_path_changed() {
}
void Resource::set_path(const String &p_path, bool p_take_over) {
if (path_cache == p_path)
return;
if (path_cache != "") {
ResourceCache::lock.write_lock();
ResourceCache::resources.erase(path_cache);
ResourceCache::lock.write_unlock();
}
path_cache = "";
ResourceCache::lock.read_lock();
bool has_path = ResourceCache::resources.has(p_path);
ResourceCache::lock.read_unlock();
if (has_path) {
if (p_take_over) {
ResourceCache::lock.write_lock();
Resource **res = ResourceCache::resources.getptr(p_path);
if (res) {
(*res)->set_name("");
}
ResourceCache::lock.write_unlock();
} else {
ResourceCache::lock.read_lock();
bool exists = ResourceCache::resources.has(p_path);
ResourceCache::lock.read_unlock();
ERR_FAIL_COND_MSG(exists, "Another resource is loaded from path '" + p_path + "' (possible cyclic resource inclusion).");
}
}
path_cache = p_path;
if (path_cache != "") {
ResourceCache::lock.write_lock();
ResourceCache::resources[path_cache] = this;
ResourceCache::lock.write_unlock();
}
_change_notify("resource_path");
_resource_path_changed();
}
String Resource::get_path() const {
return path_cache;
}
void Resource::set_subindex(int p_sub_index) {
subindex = p_sub_index;
}
int Resource::get_subindex() const {
return subindex;
}
void Resource::set_name(const String &p_name) {
name = p_name;
_change_notify("resource_name");
}
String Resource::get_name() const {
return name;
}
bool Resource::editor_can_reload_from_file() {
return true; //by default yes
}
void Resource::reload_from_file() {
String path = get_path();
if (!path.is_resource_file())
return;
Ref<Resource> s = ResourceLoader::load(ResourceLoader::path_remap(path), get_class(), true);
if (!s.is_valid())
return;
List<PropertyInfo> pi;
s->get_property_list(&pi);
for (List<PropertyInfo>::Element *E = pi.front(); E; E = E->next()) {
if (!(E->get().usage & PROPERTY_USAGE_STORAGE))
continue;
if (E->get().name == "resource_path")
continue; //do not change path
set(E->get().name, s->get(E->get().name));
}
}
Ref<Resource> Resource::duplicate_for_local_scene(Node *p_for_scene, Map<Ref<Resource>, Ref<Resource> > &remap_cache) {
List<PropertyInfo> plist;
get_property_list(&plist);
Ref<Resource> r = Object::cast_to<Resource>(ClassDB::instance(get_class()));
ERR_FAIL_COND_V(r.is_null(), Ref<Resource>());
r->local_scene = p_for_scene;
for (List<PropertyInfo>::Element *E = plist.front(); E; E = E->next()) {
if (!(E->get().usage & PROPERTY_USAGE_STORAGE))
continue;
Variant p = get(E->get().name);
if (p.get_type() == Variant::OBJECT) {
RES sr = p;
if (sr.is_valid()) {
if (sr->is_local_to_scene()) {
if (remap_cache.has(sr)) {
p = remap_cache[sr];
} else {
RES dupe = sr->duplicate_for_local_scene(p_for_scene, remap_cache);
p = dupe;
remap_cache[sr] = dupe;
}
}
}
}
r->set(E->get().name, p);
}
return r;
}
void Resource::configure_for_local_scene(Node *p_for_scene, Map<Ref<Resource>, Ref<Resource> > &remap_cache) {
List<PropertyInfo> plist;
get_property_list(&plist);
local_scene = p_for_scene;
for (List<PropertyInfo>::Element *E = plist.front(); E; E = E->next()) {
if (!(E->get().usage & PROPERTY_USAGE_STORAGE))
continue;
Variant p = get(E->get().name);
if (p.get_type() == Variant::OBJECT) {
RES sr = p;
if (sr.is_valid()) {
if (sr->is_local_to_scene()) {
if (!remap_cache.has(sr)) {
sr->configure_for_local_scene(p_for_scene, remap_cache);
remap_cache[sr] = sr;
}
}
}
}
}
}
Ref<Resource> Resource::duplicate(bool p_subresources) const {
List<PropertyInfo> plist;
get_property_list(&plist);
Ref<Resource> r = (Resource *)ClassDB::instance(get_class());
ERR_FAIL_COND_V(r.is_null(), Ref<Resource>());
for (List<PropertyInfo>::Element *E = plist.front(); E; E = E->next()) {
if (!(E->get().usage & PROPERTY_USAGE_STORAGE))
continue;
Variant p = get(E->get().name);
if ((p.get_type() == Variant::DICTIONARY || p.get_type() == Variant::ARRAY)) {
r->set(E->get().name, p.duplicate(p_subresources));
} else if (p.get_type() == Variant::OBJECT && (p_subresources || (E->get().usage & PROPERTY_USAGE_DO_NOT_SHARE_ON_DUPLICATE))) {
RES sr = p;
if (sr.is_valid()) {
r->set(E->get().name, sr->duplicate(p_subresources));
}
} else {
r->set(E->get().name, p);
}
}
return r;
}
void Resource::_set_path(const String &p_path) {
set_path(p_path, false);
}
void Resource::_take_over_path(const String &p_path) {
set_path(p_path, true);
}
RID Resource::get_rid() const {
return RID();
}
void Resource::register_owner(Object *p_owner) {
owners.insert(p_owner->get_instance_id());
}
void Resource::unregister_owner(Object *p_owner) {
owners.erase(p_owner->get_instance_id());
}
void Resource::notify_change_to_owners() {
for (Set<ObjectID>::Element *E = owners.front(); E; E = E->next()) {
Object *obj = ObjectDB::get_instance(E->get());
ERR_CONTINUE_MSG(!obj, "Object was deleted, while still owning a resource."); //wtf
//TODO store string
obj->call("resource_changed", RES(this));
}
}
#ifdef TOOLS_ENABLED
uint32_t Resource::hash_edited_version() const {
uint32_t hash = hash_djb2_one_32(get_edited_version());
List<PropertyInfo> plist;
get_property_list(&plist);
for (List<PropertyInfo>::Element *E = plist.front(); E; E = E->next()) {
if (E->get().usage & PROPERTY_USAGE_STORAGE && E->get().type == Variant::OBJECT && E->get().hint == PROPERTY_HINT_RESOURCE_TYPE) {
RES res = get(E->get().name);
if (res.is_valid()) {
hash = hash_djb2_one_32(res->hash_edited_version(), hash);
}
}
}
return hash;
}
#endif
void Resource::set_local_to_scene(bool p_enable) {
local_to_scene = p_enable;
}
bool Resource::is_local_to_scene() const {
return local_to_scene;
}
Node *Resource::get_local_scene() const {
if (local_scene)
return local_scene;
if (_get_local_scene_func) {
return _get_local_scene_func();
}
return NULL;
}
void Resource::setup_local_to_scene() {
if (get_script_instance())
get_script_instance()->call("_setup_local_to_scene");
}
Node *(*Resource::_get_local_scene_func)() = NULL;
void Resource::set_as_translation_remapped(bool p_remapped) {
if (remapped_list.in_list() == p_remapped)
return;
ResourceCache::lock.write_lock();
if (p_remapped) {
ResourceLoader::remapped_list.add(&remapped_list);
} else {
ResourceLoader::remapped_list.remove(&remapped_list);
}
ResourceCache::lock.write_unlock();
}
bool Resource::is_translation_remapped() const {
return remapped_list.in_list();
}
#ifdef TOOLS_ENABLED
//helps keep IDs same number when loading/saving scenes. -1 clears ID and it Returns -1 when no id stored
void Resource::set_id_for_path(const String &p_path, int p_id) {
if (p_id == -1) {
ResourceCache::path_cache_lock.write_lock();
ResourceCache::resource_path_cache[p_path].erase(get_path());
ResourceCache::path_cache_lock.write_unlock();
} else {
ResourceCache::path_cache_lock.write_lock();
ResourceCache::resource_path_cache[p_path][get_path()] = p_id;
ResourceCache::path_cache_lock.write_unlock();
}
}
int Resource::get_id_for_path(const String &p_path) const {
ResourceCache::path_cache_lock.read_lock();
if (ResourceCache::resource_path_cache[p_path].has(get_path())) {
int result = ResourceCache::resource_path_cache[p_path][get_path()];
ResourceCache::path_cache_lock.read_unlock();
return result;
} else {
ResourceCache::path_cache_lock.read_unlock();
return -1;
}
}
#endif
void Resource::_bind_methods() {
ClassDB::bind_method(D_METHOD("set_path", "path"), &Resource::_set_path);
ClassDB::bind_method(D_METHOD("take_over_path", "path"), &Resource::_take_over_path);
ClassDB::bind_method(D_METHOD("get_path"), &Resource::get_path);
ClassDB::bind_method(D_METHOD("set_name", "name"), &Resource::set_name);
ClassDB::bind_method(D_METHOD("get_name"), &Resource::get_name);
ClassDB::bind_method(D_METHOD("get_rid"), &Resource::get_rid);
ClassDB::bind_method(D_METHOD("set_local_to_scene", "enable"), &Resource::set_local_to_scene);
ClassDB::bind_method(D_METHOD("is_local_to_scene"), &Resource::is_local_to_scene);
ClassDB::bind_method(D_METHOD("get_local_scene"), &Resource::get_local_scene);
ClassDB::bind_method(D_METHOD("setup_local_to_scene"), &Resource::setup_local_to_scene);
ClassDB::bind_method(D_METHOD("emit_changed"), &Resource::emit_changed);
ClassDB::bind_method(D_METHOD("duplicate", "subresources"), &Resource::duplicate, DEFVAL(false));
ADD_SIGNAL(MethodInfo("changed"));
ADD_GROUP("Resource", "resource_");
ADD_PROPERTY(PropertyInfo(Variant::BOOL, "resource_local_to_scene"), "set_local_to_scene", "is_local_to_scene");
ADD_PROPERTY(PropertyInfo(Variant::STRING, "resource_path", PROPERTY_HINT_NONE, "", PROPERTY_USAGE_EDITOR), "set_path", "get_path");
ADD_PROPERTY(PropertyInfo(Variant::STRING, "resource_name"), "set_name", "get_name");
BIND_VMETHOD(MethodInfo("_setup_local_to_scene"));
}
Resource::Resource() :
remapped_list(this) {
#ifdef TOOLS_ENABLED
last_modified_time = 0;
import_last_modified_time = 0;
#endif
subindex = 0;
local_to_scene = false;
local_scene = NULL;
}
Resource::~Resource() {
if (path_cache != "") {
ResourceCache::lock.write_lock();
ResourceCache::resources.erase(path_cache);
ResourceCache::lock.write_unlock();
}
if (owners.size()) {
WARN_PRINT("Resource is still owned.");
}
}
HashMap<String, Resource *> ResourceCache::resources;
#ifdef TOOLS_ENABLED
HashMap<String, HashMap<String, int> > ResourceCache::resource_path_cache;
#endif
RWLock ResourceCache::lock;
#ifdef TOOLS_ENABLED
RWLock ResourceCache::path_cache_lock;
#endif
void ResourceCache::clear() {
if (resources.size()) {
ERR_PRINT("Resources still in use at exit (run with --verbose for details).");
if (OS::get_singleton()->is_stdout_verbose()) {
const String *K = nullptr;
while ((K = resources.next(K))) {
Resource *r = resources[*K];
print_line(vformat("Resource still in use: %s (%s)", *K, r->get_class()));
}
}
}
resources.clear();
}
void ResourceCache::reload_externals() {
}
bool ResourceCache::has(const String &p_path) {
lock.read_lock();
bool b = resources.has(p_path);
lock.read_unlock();
return b;
}
Resource *ResourceCache::get(const String &p_path) {
lock.read_lock();
Resource **res = resources.getptr(p_path);
lock.read_unlock();
if (!res) {
return NULL;
}
return *res;
}
void ResourceCache::get_cached_resources(List<Ref<Resource> > *p_resources) {
lock.read_lock();
const String *K = NULL;
while ((K = resources.next(K))) {
Resource *r = resources[*K];
p_resources->push_back(Ref<Resource>(r));
}
lock.read_unlock();
}
int ResourceCache::get_cached_resource_count() {
lock.read_lock();
int rc = resources.size();
lock.read_unlock();
return rc;
}
void ResourceCache::dump(const char *p_file, bool p_short) {
#ifdef DEBUG_ENABLED
lock.read_lock();
Map<String, int> type_count;
FileAccess *f = NULL;
if (p_file) {
f = FileAccess::open(p_file, FileAccess::WRITE);
ERR_FAIL_COND_MSG(!f, "Cannot create file at path '" + String(p_file) + "'.");
}
const String *K = NULL;
while ((K = resources.next(K))) {
Resource *r = resources[*K];
if (!type_count.has(r->get_class())) {
type_count[r->get_class()] = 0;
}
type_count[r->get_class()]++;
if (!p_short) {
if (f)
f->store_line(r->get_class() + ": " + r->get_path());
}
}
for (Map<String, int>::Element *E = type_count.front(); E; E = E->next()) {
if (f)
f->store_line(E->key() + " count: " + itos(E->get()));
}
if (f) {
f->close();
memdelete(f);
}
lock.read_unlock();
#endif
}