/*
* Some of our objects may point to a different address than the address returned by GC_malloc()
* (because of the GetHashCode hack), but we need to pass the real address to register_finalizer.
* This also means that in the callback we need to adjust the pointer to get back the real
* MonoObject*.
* We also need to be consistent in the use of the GC_debug* variants of malloc and register_finalizer,
* since that, too, can cause the underlying pointer to be offset.
*/
static void
object_register_finalizer (MonoObject *obj, void (*callback)(void *, void*))
{
#if HAVE_BOEHM_GC
guint offset = 0;
MonoDomain *domain;
if (obj == NULL)
mono_raise_exception (mono_get_exception_argument_null ("obj"));
domain = obj->vtable->domain;
#ifndef GC_DEBUG
/* This assertion is not valid when GC_DEBUG is defined */
g_assert (GC_base (obj) == (char*)obj - offset);
#endif
if (mono_domain_is_unloading (domain) && (callback != NULL))
/*
* Can't register finalizers in a dying appdomain, since they
* could be invoked after the appdomain has been unloaded.
*/
return;
mono_domain_finalizers_lock (domain);
if (callback)
g_hash_table_insert (domain->finalizable_objects_hash, obj, obj);
else
g_hash_table_remove (domain->finalizable_objects_hash, obj);
mono_domain_finalizers_unlock (domain);
GC_REGISTER_FINALIZER_NO_ORDER ((char*)obj - offset, callback, GUINT_TO_POINTER (offset), NULL, NULL);
#elif defined(HAVE_SGEN_GC)
if (obj == NULL)
mono_raise_exception (mono_get_exception_argument_null ("obj"));
/*
* If we register finalizers for domains that are unloading we might
* end up running them while or after the domain is being cleared, so
* the objects will not be valid anymore.
*/
if (!mono_domain_is_unloading (obj->vtable->domain))
mono_gc_register_for_finalization (obj, callback);
#endif
}
void
ves_icall_System_GC_ReRegisterForFinalize (MonoObject *obj)
{
if (!obj)
mono_raise_exception (mono_get_exception_argument_null ("obj"));
object_register_finalizer (obj, mono_gc_run_finalize);
}
MonoString *
ves_icall_Mono_Runtime_GetNativeStackTrace (MonoException *exc)
{
char *trace;
MonoString *res;
if (!exc)
mono_raise_exception (mono_get_exception_argument_null ("exception"));
trace = mono_exception_get_native_backtrace (exc);
res = mono_string_new (mono_domain_get (), trace);
g_free (trace);
return res;
}
void
ves_icall_System_GC_SuppressFinalize (MonoObject *obj)
{
if (!obj)
mono_raise_exception (mono_get_exception_argument_null ("obj"));
/* delegates have no finalizers, but we register them to deal with the
* unmanaged->managed trampoline. We don't let the user suppress it
* otherwise we'd leak it.
*/
if (obj->vtable->klass->delegate)
return;
/* FIXME: Need to handle case where obj has COM Callable Wrapper
* generated for it that needs cleaned up, but user wants to suppress
* their derived object finalizer. */
object_register_finalizer (obj, NULL);
}
/*
* Some of our objects may point to a different address than the address returned by GC_malloc()
* (because of the GetHashCode hack), but we need to pass the real address to register_finalizer.
* This also means that in the callback we need to adjust the pointer to get back the real
* MonoObject*.
* We also need to be consistent in the use of the GC_debug* variants of malloc and register_finalizer,
* since that, too, can cause the underlying pointer to be offset.
*/
static void
object_register_finalizer (MonoObject *obj, void (*callback)(void *, void*))
{
MonoDomain *domain;
if (obj == NULL)
mono_raise_exception (mono_get_exception_argument_null ("obj"));
domain = obj->vtable->domain;
#if HAVE_BOEHM_GC
if (mono_domain_is_unloading (domain) && (callback != NULL))
/*
* Can't register finalizers in a dying appdomain, since they
* could be invoked after the appdomain has been unloaded.
*/
return;
mono_domain_finalizers_lock (domain);
if (callback)
g_hash_table_insert (domain->finalizable_objects_hash, obj, obj);
else
g_hash_table_remove (domain->finalizable_objects_hash, obj);
mono_domain_finalizers_unlock (domain);
mono_gc_register_for_finalization (obj, callback);
#elif defined(HAVE_SGEN_GC)
/*
* If we register finalizers for domains that are unloading we might
* end up running them while or after the domain is being cleared, so
* the objects will not be valid anymore.
*/
if (!mono_domain_is_unloading (domain)) {
MONO_TRY_BLOCKING;
mono_gc_register_for_finalization (obj, callback);
MONO_FINISH_TRY_BLOCKING;
}
#endif
}
/*Can fail with out-of-memory*/
MonoException*
mono_error_prepare_exception (MonoError *oerror, MonoError *error_out)
{
MonoErrorInternal *error = (MonoErrorInternal*)oerror;
MonoException* exception = NULL;
MonoString *assembly_name = NULL, *type_name = NULL, *method_name = NULL, *field_name = NULL, *msg = NULL;
MonoDomain *domain = mono_domain_get ();
mono_error_init (error_out);
switch (error->error_code) {
case MONO_ERROR_NONE:
return NULL;
case MONO_ERROR_MISSING_METHOD:
if ((error->type_name || error->exn.klass) && error->member_name) {
type_name = get_type_name_as_mono_string (error, domain, error_out);
if (!mono_error_ok (error_out))
break;
method_name = mono_string_new (domain, error->member_name);
if (!method_name) {
mono_error_set_out_of_memory (error_out, "Could not allocate method name");
break;
}
exception = mono_exception_from_name_two_strings_checked (mono_defaults.corlib, "System", "MissingMethodException", type_name, method_name, error_out);
if (exception)
set_message_on_exception (exception, error, error_out);
} else {
exception = mono_exception_from_name_msg (mono_defaults.corlib, "System", "MissingMethodException", error->full_message);
}
break;
case MONO_ERROR_MISSING_FIELD:
if ((error->type_name || error->exn.klass) && error->member_name) {
type_name = get_type_name_as_mono_string (error, domain, error_out);
if (!mono_error_ok (error_out))
break;
field_name = mono_string_new (domain, error->member_name);
if (!field_name) {
mono_error_set_out_of_memory (error_out, "Could not allocate field name");
break;
}
exception = mono_exception_from_name_two_strings_checked (mono_defaults.corlib, "System", "MissingFieldException", type_name, field_name, error_out);
if (exception)
set_message_on_exception (exception, error, error_out);
} else {
exception = mono_exception_from_name_msg (mono_defaults.corlib, "System", "MissingFieldException", error->full_message);
}
break;
case MONO_ERROR_TYPE_LOAD:
if ((error->type_name && error->assembly_name) || error->exn.klass) {
type_name = get_type_name_as_mono_string (error, domain, error_out);
if (!mono_error_ok (error_out))
break;
if (error->assembly_name) {
assembly_name = mono_string_new (domain, error->assembly_name);
if (!assembly_name) {
mono_error_set_out_of_memory (error_out, "Could not allocate assembly name");
break;
}
}
exception = mono_exception_from_name_two_strings_checked (mono_get_corlib (), "System", "TypeLoadException", type_name, assembly_name, error_out);
if (exception)
set_message_on_exception (exception, error, error_out);
} else {
exception = mono_exception_from_name_msg (mono_defaults.corlib, "System", "TypeLoadException", error->full_message);
}
break;
case MONO_ERROR_FILE_NOT_FOUND:
case MONO_ERROR_BAD_IMAGE:
if (error->assembly_name) {
msg = mono_string_new (domain, error->full_message);
if (!msg) {
mono_error_set_out_of_memory (error_out, "Could not allocate message");
break;
}
if (error->assembly_name) {
assembly_name = mono_string_new (domain, error->assembly_name);
if (!assembly_name) {
mono_error_set_out_of_memory (error_out, "Could not allocate assembly name");
break;
}
}
if (error->error_code == MONO_ERROR_FILE_NOT_FOUND)
exception = mono_exception_from_name_two_strings_checked (mono_get_corlib (), "System.IO", "FileNotFoundException", msg, assembly_name, error_out);
else
exception = mono_exception_from_name_two_strings_checked (mono_defaults.corlib, "System", "BadImageFormatException", msg, assembly_name, error_out);
} else {
if (error->error_code == MONO_ERROR_FILE_NOT_FOUND)
exception = mono_exception_from_name_msg (mono_get_corlib (), "System.IO", "FileNotFoundException", error->full_message);
else
exception = mono_exception_from_name_msg (mono_defaults.corlib, "System", "BadImageFormatException", error->full_message);
}
break;
case MONO_ERROR_OUT_OF_MEMORY:
exception = mono_get_exception_out_of_memory ();
break;
case MONO_ERROR_ARGUMENT:
exception = mono_get_exception_argument (error->first_argument, error->full_message);
break;
case MONO_ERROR_ARGUMENT_NULL:
exception = mono_get_exception_argument_null (error->first_argument);
break;
case MONO_ERROR_NOT_VERIFIABLE: {
char *type_name = NULL, *message;
if (error->exn.klass) {
type_name = mono_type_get_full_name (error->exn.klass);
if (!type_name) {
mono_error_set_out_of_memory (error_out, "Could not allocate message");
break;
}
}
message = g_strdup_printf ("Error in %s:%s %s", type_name, error->member_name, error->full_message);
if (!message) {
g_free (type_name);
mono_error_set_out_of_memory (error_out, "Could not allocate message");
break;
}
exception = mono_exception_from_name_msg (mono_defaults.corlib, "System.Security", "VerificationException", message);
g_free (message);
g_free (type_name);
break;
}
case MONO_ERROR_GENERIC:
if (!error->exception_name_space || !error->exception_name)
mono_error_set_execution_engine (error_out, "MonoError with generic error but no exception name was supplied");
else
exception = mono_exception_from_name_msg (mono_defaults.corlib, error->exception_name_space, error->exception_name, error->full_message);
break;
case MONO_ERROR_EXCEPTION_INSTANCE:
exception = (MonoException*) mono_gchandle_get_target (error->exn.instance_handle);
break;
case MONO_ERROR_CLEANUP_CALLED_SENTINEL:
mono_error_set_execution_engine (error_out, "MonoError reused after mono_error_cleanup");
break;
case MONO_ERROR_INVALID_PROGRAM: {
gboolean lacks_message = error->flags & MONO_ERROR_INCOMPLETE;
if (lacks_message)
return mono_exception_from_name_msg (mono_defaults.corlib, "System", "InvalidProgramException", "");
else
return mono_exception_from_name_msg (mono_defaults.corlib, "System", "InvalidProgramException", error->full_message);
}
default:
mono_error_set_execution_engine (error_out, "Invalid error-code %d", error->error_code);
}
if (!mono_error_ok (error_out))
return NULL;
if (!exception)
mono_error_set_out_of_memory (error_out, "Could not allocate exception object");
return exception;
}