godot/modules/mono/mono_gd/gd_mono.cpp
Ignacio Etcheverry 562ec3f5e6 Mono: Don't defer call to dispose queue objects when finalizing domain
It's going to be called anyway after `mono_domain_finalize`.
This also prevents crashes, since the MessageQueue singleton could already be freed at this point (see: #15702).
2018-01-26 01:10:25 +01:00

794 lines
20 KiB
C++

/*************************************************************************/
/* gd_mono.cpp */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2018 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2018 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 "gd_mono.h"
#include <mono/metadata/exception.h>
#include <mono/metadata/mono-config.h>
#include <mono/metadata/mono-debug.h>
#include <mono/metadata/mono-gc.h>
#include "os/dir_access.h"
#include "os/file_access.h"
#include "os/os.h"
#include "os/thread.h"
#include "project_settings.h"
#include "../csharp_script.h"
#include "../utils/path_utils.h"
#include "gd_mono_utils.h"
#ifdef TOOLS_ENABLED
#include "../editor/godotsharp_editor.h"
#endif
void gdmono_unhandled_exception_hook(MonoObject *exc, void *user_data) {
(void)user_data; // UNUSED
GDMonoUtils::print_unhandled_exception(exc);
abort();
}
#ifdef MONO_PRINT_HANDLER_ENABLED
void gdmono_MonoPrintCallback(const char *string, mono_bool is_stdout) {
if (is_stdout) {
OS::get_singleton()->print(string);
} else {
OS::get_singleton()->printerr(string);
}
}
#endif
GDMono *GDMono::singleton = NULL;
#ifdef DEBUG_ENABLED
static bool _wait_for_debugger_msecs(uint32_t p_msecs) {
do {
if (mono_is_debugger_attached())
return true;
int last_tick = OS::get_singleton()->get_ticks_msec();
OS::get_singleton()->delay_usec((p_msecs < 25 ? p_msecs : 25) * 1000);
int tdiff = OS::get_singleton()->get_ticks_msec() - last_tick;
if (tdiff > p_msecs) {
p_msecs = 0;
} else {
p_msecs -= tdiff;
}
} while (p_msecs > 0);
return mono_is_debugger_attached();
}
#endif
#ifdef TOOLS_ENABLED
// temporary workaround. should be provided from Main::setup/setup2 instead
bool _is_project_manager_requested() {
List<String> cmdline_args = OS::get_singleton()->get_cmdline_args();
for (List<String>::Element *E = cmdline_args.front(); E; E = E->next()) {
const String &arg = E->get();
if (arg == "-p" || arg == "--project-manager")
return true;
}
return false;
}
#endif
#ifdef DEBUG_ENABLED
void gdmono_debug_init() {
mono_debug_init(MONO_DEBUG_FORMAT_MONO);
int da_port = GLOBAL_DEF("mono/debugger_agent/port", 23685);
bool da_suspend = GLOBAL_DEF("mono/debugger_agent/wait_for_debugger", false);
int da_timeout = GLOBAL_DEF("mono/debugger_agent/wait_timeout", 3000);
#ifdef TOOLS_ENABLED
if (Engine::get_singleton()->is_editor_hint() ||
ProjectSettings::get_singleton()->get_resource_path().empty() ||
_is_project_manager_requested()) {
return;
}
#endif
CharString da_args = String("--debugger-agent=transport=dt_socket,address=127.0.0.1:" + itos(da_port) +
",embedding=1,server=y,suspend=" + (da_suspend ? "y,timeout=" + itos(da_timeout) : "n"))
.utf8();
// --debugger-agent=help
const char *options[] = {
"--soft-breakpoints",
da_args.get_data()
};
mono_jit_parse_options(2, (char **)options);
}
#endif
void GDMono::initialize() {
ERR_FAIL_NULL(Engine::get_singleton());
OS::get_singleton()->print("Mono: Initializing module...\n");
#ifdef DEBUG_METHODS_ENABLED
_initialize_and_check_api_hashes();
#endif
GDMonoLog::get_singleton()->initialize();
#ifdef MONO_PRINT_HANDLER_ENABLED
mono_trace_set_print_handler(gdmono_MonoPrintCallback);
mono_trace_set_printerr_handler(gdmono_MonoPrintCallback);
#endif
#ifdef WINDOWS_ENABLED
mono_reg_info = MonoRegUtils::find_mono();
CharString assembly_dir;
CharString config_dir;
if (mono_reg_info.assembly_dir.length() && DirAccess::exists(mono_reg_info.assembly_dir)) {
assembly_dir = mono_reg_info.assembly_dir.utf8();
}
if (mono_reg_info.config_dir.length() && DirAccess::exists(mono_reg_info.config_dir)) {
config_dir = mono_reg_info.config_dir.utf8();
}
mono_set_dirs(assembly_dir.length() ? assembly_dir.get_data() : NULL,
config_dir.length() ? config_dir.get_data() : NULL);
#else
mono_set_dirs(NULL, NULL);
#endif
GDMonoAssembly::initialize();
#ifdef DEBUG_ENABLED
gdmono_debug_init();
#endif
mono_config_parse(NULL);
root_domain = mono_jit_init_version("GodotEngine.RootDomain", "v4.0.30319");
ERR_EXPLAIN("Mono: Failed to initialize runtime");
ERR_FAIL_NULL(root_domain);
GDMonoUtils::set_main_thread(GDMonoUtils::get_current_thread());
runtime_initialized = true;
OS::get_singleton()->print("Mono: Runtime initialized\n");
// mscorlib assembly MUST be present at initialization
ERR_EXPLAIN("Mono: Failed to load mscorlib assembly");
ERR_FAIL_COND(!_load_corlib_assembly());
#ifdef TOOLS_ENABLED
// The tools domain must be loaded here, before the scripts domain.
// Otherwise domain unload on the scripts domain will hang indefinitely.
ERR_EXPLAIN("Mono: Failed to load tools domain");
ERR_FAIL_COND(_load_tools_domain() != OK);
// TODO move to editor init callback, and do it lazily when required before editor init (e.g.: bindings generation)
ERR_EXPLAIN("Mono: Failed to load Editor Tools assembly");
ERR_FAIL_COND(!_load_editor_tools_assembly());
#endif
ERR_EXPLAIN("Mono: Failed to load scripts domain");
ERR_FAIL_COND(_load_scripts_domain() != OK);
#ifdef DEBUG_ENABLED
bool debugger_attached = _wait_for_debugger_msecs(500);
if (!debugger_attached && OS::get_singleton()->is_stdout_verbose())
OS::get_singleton()->printerr("Mono: Debugger wait timeout\n");
#endif
_register_internal_calls();
// The following assemblies are not required at initialization
_load_all_script_assemblies();
mono_install_unhandled_exception_hook(gdmono_unhandled_exception_hook, NULL);
OS::get_singleton()->print("Mono: INITIALIZED\n");
}
#ifndef MONO_GLUE_DISABLED
namespace GodotSharpBindings {
uint64_t get_core_api_hash();
uint64_t get_editor_api_hash();
void register_generated_icalls();
} // namespace GodotSharpBindings
#endif
void GDMono::_register_internal_calls() {
#ifndef MONO_GLUE_DISABLED
GodotSharpBindings::register_generated_icalls();
#endif
#ifdef TOOLS_ENABLED
GodotSharpBuilds::_register_internal_calls();
#endif
}
#ifdef DEBUG_METHODS_ENABLED
void GDMono::_initialize_and_check_api_hashes() {
api_core_hash = ClassDB::get_api_hash(ClassDB::API_CORE);
#ifndef MONO_GLUE_DISABLED
if (api_core_hash != GodotSharpBindings::get_core_api_hash()) {
ERR_PRINT("Mono: Core API hash mismatch!");
}
#endif
#ifdef TOOLS_ENABLED
api_editor_hash = ClassDB::get_api_hash(ClassDB::API_EDITOR);
#ifndef MONO_GLUE_DISABLED
if (api_editor_hash != GodotSharpBindings::get_editor_api_hash()) {
ERR_PRINT("Mono: Editor API hash mismatch!");
}
#endif
#endif // TOOLS_ENABLED
}
#endif // DEBUG_METHODS_ENABLED
void GDMono::add_assembly(uint32_t p_domain_id, GDMonoAssembly *p_assembly) {
assemblies[p_domain_id][p_assembly->get_name()] = p_assembly;
}
GDMonoAssembly **GDMono::get_loaded_assembly(const String &p_name) {
MonoDomain *domain = mono_domain_get();
uint32_t domain_id = domain ? mono_domain_get_id(domain) : 0;
return assemblies[domain_id].getptr(p_name);
}
bool GDMono::_load_assembly(const String &p_name, GDMonoAssembly **r_assembly) {
CRASH_COND(!r_assembly);
if (OS::get_singleton()->is_stdout_verbose())
OS::get_singleton()->print((String() + "Mono: Loading assembly " + p_name + "...\n").utf8());
MonoImageOpenStatus status = MONO_IMAGE_OK;
MonoAssemblyName *aname = mono_assembly_name_new(p_name.utf8());
MonoAssembly *assembly = mono_assembly_load_full(aname, NULL, &status, false);
mono_assembly_name_free(aname);
if (!assembly)
return false;
uint32_t domain_id = mono_domain_get_id(mono_domain_get());
GDMonoAssembly **stored_assembly = assemblies[domain_id].getptr(p_name);
ERR_FAIL_COND_V(status != MONO_IMAGE_OK, false);
ERR_FAIL_COND_V(stored_assembly == NULL, false);
ERR_FAIL_COND_V((*stored_assembly)->get_assembly() != assembly, false);
*r_assembly = *stored_assembly;
if (OS::get_singleton()->is_stdout_verbose())
OS::get_singleton()->print(String("Mono: Assembly " + p_name + " loaded from path: " + (*r_assembly)->get_path() + "\n").utf8());
return true;
}
bool GDMono::_load_corlib_assembly() {
if (corlib_assembly)
return true;
bool success = _load_assembly("mscorlib", &corlib_assembly);
if (success)
GDMonoUtils::update_corlib_cache();
return success;
}
bool GDMono::_load_core_api_assembly() {
if (api_assembly)
return true;
bool success = _load_assembly(API_ASSEMBLY_NAME, &api_assembly);
if (success)
GDMonoUtils::update_godot_api_cache();
return success;
}
#ifdef TOOLS_ENABLED
bool GDMono::_load_editor_api_assembly() {
if (editor_api_assembly)
return true;
return _load_assembly(EDITOR_API_ASSEMBLY_NAME, &editor_api_assembly);
}
#endif
#ifdef TOOLS_ENABLED
bool GDMono::_load_editor_tools_assembly() {
if (editor_tools_assembly)
return true;
_GDMONO_SCOPE_DOMAIN_(tools_domain)
return _load_assembly(EDITOR_TOOLS_ASSEMBLY_NAME, &editor_tools_assembly);
}
#endif
bool GDMono::_load_project_assembly() {
if (project_assembly)
return true;
String name = ProjectSettings::get_singleton()->get("application/config/name");
if (name.empty()) {
name = "UnnamedProject";
}
bool success = _load_assembly(name, &project_assembly);
if (success)
mono_assembly_set_main(project_assembly->get_assembly());
return success;
}
bool GDMono::_load_all_script_assemblies() {
#ifndef MONO_GLUE_DISABLED
if (!_load_core_api_assembly()) {
if (OS::get_singleton()->is_stdout_verbose())
OS::get_singleton()->printerr("Mono: Failed to load Core API assembly\n");
return false;
} else {
#ifdef TOOLS_ENABLED
if (!_load_editor_api_assembly()) {
if (OS::get_singleton()->is_stdout_verbose())
OS::get_singleton()->printerr("Mono: Failed to load Editor API assembly\n");
return false;
}
#endif
}
if (!_load_project_assembly()) {
if (OS::get_singleton()->is_stdout_verbose())
OS::get_singleton()->printerr("Mono: Failed to load project assembly\n");
return false;
}
return true;
#else
if (OS::get_singleton()->is_stdout_verbose())
OS::get_singleton()->print("Mono: Glue disbled, ignoring script assemblies\n");
return true;
#endif
}
Error GDMono::_load_scripts_domain() {
ERR_FAIL_COND_V(scripts_domain != NULL, ERR_BUG);
if (OS::get_singleton()->is_stdout_verbose()) {
OS::get_singleton()->print("Mono: Loading scripts domain...\n");
}
scripts_domain = GDMonoUtils::create_domain("GodotEngine.ScriptsDomain");
ERR_EXPLAIN("Mono: Could not create scripts app domain");
ERR_FAIL_NULL_V(scripts_domain, ERR_CANT_CREATE);
mono_domain_set(scripts_domain, true);
return OK;
}
Error GDMono::_unload_scripts_domain() {
ERR_FAIL_NULL_V(scripts_domain, ERR_BUG);
if (OS::get_singleton()->is_stdout_verbose()) {
OS::get_singleton()->print("Mono: Unloading scripts domain...\n");
}
_GodotSharp::get_singleton()->_dispose_callback();
if (mono_domain_get() != root_domain)
mono_domain_set(root_domain, true);
mono_gc_collect(mono_gc_max_generation());
finalizing_scripts_domain = true;
mono_domain_finalize(scripts_domain, 2000);
finalizing_scripts_domain = false;
mono_gc_collect(mono_gc_max_generation());
_domain_assemblies_cleanup(mono_domain_get_id(scripts_domain));
api_assembly = NULL;
project_assembly = NULL;
#ifdef TOOLS_ENABLED
editor_api_assembly = NULL;
#endif
MonoDomain *domain = scripts_domain;
scripts_domain = NULL;
_GodotSharp::get_singleton()->_dispose_callback();
MonoObject *ex = NULL;
mono_domain_try_unload(domain, &ex);
if (ex) {
ERR_PRINT("Exception thrown when unloading scripts domain:");
mono_print_unhandled_exception(ex);
return FAILED;
}
return OK;
}
#ifdef TOOLS_ENABLED
Error GDMono::_load_tools_domain() {
ERR_FAIL_COND_V(tools_domain != NULL, ERR_BUG);
if (OS::get_singleton()->is_stdout_verbose()) {
OS::get_singleton()->print("Mono: Loading tools domain...\n");
}
tools_domain = GDMonoUtils::create_domain("GodotEngine.ToolsDomain");
ERR_EXPLAIN("Mono: Could not create tools app domain");
ERR_FAIL_NULL_V(tools_domain, ERR_CANT_CREATE);
return OK;
}
#endif
#ifdef TOOLS_ENABLED
Error GDMono::reload_scripts_domain() {
ERR_FAIL_COND_V(!runtime_initialized, ERR_BUG);
if (scripts_domain) {
Error err = _unload_scripts_domain();
if (err != OK) {
ERR_PRINT("Mono: Failed to unload scripts domain");
return err;
}
}
Error err = _load_scripts_domain();
if (err != OK) {
ERR_PRINT("Mono: Failed to load scripts domain");
return err;
}
if (!_load_all_script_assemblies()) {
if (OS::get_singleton()->is_stdout_verbose())
OS::get_singleton()->printerr("Mono: Failed to load script assemblies\n");
return ERR_CANT_OPEN;
}
return OK;
}
#endif
GDMonoClass *GDMono::get_class(MonoClass *p_raw_class) {
MonoImage *image = mono_class_get_image(p_raw_class);
if (image == corlib_assembly->get_image())
return corlib_assembly->get_class(p_raw_class);
uint32_t domain_id = mono_domain_get_id(mono_domain_get());
HashMap<String, GDMonoAssembly *> &domain_assemblies = assemblies[domain_id];
const String *k = NULL;
while ((k = domain_assemblies.next(k))) {
GDMonoAssembly *assembly = domain_assemblies.get(*k);
if (assembly->get_image() == image) {
GDMonoClass *klass = assembly->get_class(p_raw_class);
if (klass)
return klass;
}
}
return NULL;
}
void GDMono::_domain_assemblies_cleanup(uint32_t p_domain_id) {
HashMap<String, GDMonoAssembly *> &domain_assemblies = assemblies[p_domain_id];
const String *k = NULL;
while ((k = domain_assemblies.next(k))) {
memdelete(domain_assemblies.get(*k));
}
assemblies.erase(p_domain_id);
}
GDMono::GDMono() {
singleton = this;
gdmono_log = memnew(GDMonoLog);
runtime_initialized = false;
finalizing_scripts_domain = false;
root_domain = NULL;
scripts_domain = NULL;
#ifdef TOOLS_ENABLED
tools_domain = NULL;
#endif
corlib_assembly = NULL;
api_assembly = NULL;
project_assembly = NULL;
#ifdef TOOLS_ENABLED
editor_api_assembly = NULL;
editor_tools_assembly = NULL;
#endif
#ifdef DEBUG_METHODS_ENABLED
api_core_hash = 0;
#ifdef TOOLS_ENABLED
api_editor_hash = 0;
#endif
#endif
}
GDMono::~GDMono() {
if (runtime_initialized) {
if (scripts_domain) {
Error err = _unload_scripts_domain();
if (err != OK) {
WARN_PRINT("Mono: Failed to unload scripts domain");
}
}
const uint32_t *k = NULL;
while ((k = assemblies.next(k))) {
HashMap<String, GDMonoAssembly *> &domain_assemblies = assemblies.get(*k);
const String *kk = NULL;
while ((kk = domain_assemblies.next(kk))) {
memdelete(domain_assemblies.get(*kk));
}
}
assemblies.clear();
GDMonoUtils::clear_cache();
OS::get_singleton()->print("Mono: Runtime cleanup...\n");
runtime_initialized = false;
mono_jit_cleanup(root_domain);
}
if (gdmono_log)
memdelete(gdmono_log);
singleton = NULL;
}
_GodotSharp *_GodotSharp::singleton = NULL;
void _GodotSharp::_dispose_object(Object *p_object) {
if (p_object->get_script_instance()) {
CSharpInstance *cs_instance = CAST_CSHARP_INSTANCE(p_object->get_script_instance());
if (cs_instance) {
cs_instance->mono_object_disposed();
return;
}
}
// Unsafe refcount decrement. The managed instance also counts as a reference.
// See: CSharpLanguage::alloc_instance_binding_data(Object *p_object)
if (Object::cast_to<Reference>(p_object)->unreference()) {
memdelete(p_object);
}
}
void _GodotSharp::_dispose_callback() {
#ifndef NO_THREADS
queue_mutex->lock();
#endif
for (List<Object *>::Element *E = obj_delete_queue.front(); E; E = E->next()) {
_dispose_object(E->get());
}
for (List<NodePath *>::Element *E = np_delete_queue.front(); E; E = E->next()) {
memdelete(E->get());
}
for (List<RID *>::Element *E = rid_delete_queue.front(); E; E = E->next()) {
memdelete(E->get());
}
obj_delete_queue.clear();
np_delete_queue.clear();
rid_delete_queue.clear();
queue_empty = true;
#ifndef NO_THREADS
queue_mutex->unlock();
#endif
}
void _GodotSharp::attach_thread() {
GDMonoUtils::attach_current_thread();
}
void _GodotSharp::detach_thread() {
GDMonoUtils::detach_current_thread();
}
bool _GodotSharp::is_finalizing_domain() {
return GDMono::get_singleton()->is_finalizing_scripts_domain();
}
bool _GodotSharp::is_domain_loaded() {
return GDMono::get_singleton()->get_scripts_domain() != NULL;
}
#define ENQUEUE_FOR_DISPOSAL(m_queue, m_inst) \
m_queue.push_back(m_inst); \
if (queue_empty) { \
queue_empty = false; \
if (!is_finalizing_domain()) { /* call_deferred may not be safe here */ \
call_deferred("_dispose_callback"); \
} \
}
void _GodotSharp::queue_dispose(MonoObject *p_mono_object, Object *p_object) {
if (GDMonoUtils::is_main_thread() && !GDMono::get_singleton()->is_finalizing_scripts_domain()) {
_dispose_object(p_object);
} else {
#ifndef NO_THREADS
queue_mutex->lock();
#endif
// This is our last chance to invoke notification predelete (this is being called from the finalizer)
// We must use the MonoObject* passed by the finalizer, because the weak GC handle target returns NULL at this point
CSharpInstance *si = CAST_CSHARP_INSTANCE(p_object->get_script_instance());
if (si) {
si->call_notification_no_check(p_mono_object, Object::NOTIFICATION_PREDELETE);
}
ENQUEUE_FOR_DISPOSAL(obj_delete_queue, p_object);
#ifndef NO_THREADS
queue_mutex->unlock();
#endif
}
}
void _GodotSharp::queue_dispose(NodePath *p_node_path) {
if (GDMonoUtils::is_main_thread() && !GDMono::get_singleton()->is_finalizing_scripts_domain()) {
memdelete(p_node_path);
} else {
#ifndef NO_THREADS
queue_mutex->lock();
#endif
ENQUEUE_FOR_DISPOSAL(np_delete_queue, p_node_path);
#ifndef NO_THREADS
queue_mutex->unlock();
#endif
}
}
void _GodotSharp::queue_dispose(RID *p_rid) {
if (GDMonoUtils::is_main_thread() && !GDMono::get_singleton()->is_finalizing_scripts_domain()) {
memdelete(p_rid);
} else {
#ifndef NO_THREADS
queue_mutex->lock();
#endif
ENQUEUE_FOR_DISPOSAL(rid_delete_queue, p_rid);
#ifndef NO_THREADS
queue_mutex->unlock();
#endif
}
}
void _GodotSharp::_bind_methods() {
ClassDB::bind_method(D_METHOD("attach_thread"), &_GodotSharp::attach_thread);
ClassDB::bind_method(D_METHOD("detach_thread"), &_GodotSharp::detach_thread);
ClassDB::bind_method(D_METHOD("is_finalizing_domain"), &_GodotSharp::is_finalizing_domain);
ClassDB::bind_method(D_METHOD("is_domain_loaded"), &_GodotSharp::is_domain_loaded);
ClassDB::bind_method(D_METHOD("_dispose_callback"), &_GodotSharp::_dispose_callback);
}
_GodotSharp::_GodotSharp() {
singleton = this;
queue_empty = true;
#ifndef NO_THREADS
queue_mutex = Mutex::create();
#endif
}
_GodotSharp::~_GodotSharp() {
singleton = NULL;
if (queue_mutex) {
memdelete(queue_mutex);
}
}