2 * remoting.c: Remoting support
4 * Copyright 2002-2003 Ximian, Inc (http://www.ximian.com)
5 * Copyright 2004-2009 Novell, Inc (http://www.novell.com)
6 * Copyright 2011-2014 Xamarin, Inc (http://www.xamarin.com)
12 #include "mono/metadata/remoting.h"
13 #include "mono/metadata/marshal.h"
14 #include "mono/metadata/abi-details.h"
15 #include "mono/metadata/cominterop.h"
16 #include "mono/metadata/tabledefs.h"
17 #include "mono/metadata/exception.h"
18 #include "mono/metadata/debug-helpers.h"
21 MONO_MARSHAL_NONE, /* No marshalling needed */
22 MONO_MARSHAL_COPY, /* Can be copied by value to the new domain */
23 MONO_MARSHAL_COPY_OUT, /* out parameter that needs to be copied back to the original instance */
24 MONO_MARSHAL_SERIALIZE /* Value needs to be serialized into the new domain */
25 } MonoXDomainMarshalType;
27 #ifndef DISABLE_REMOTING
29 #define OPDEF(a,b,c,d,e,f,g,h,i,j) \
33 #include "mono/cil/opcode.def"
38 struct _MonoRemotingMethods {
40 MonoMethod *invoke_with_check;
41 MonoMethod *xdomain_invoke;
42 MonoMethod *xdomain_dispatch;
45 typedef struct _MonoRemotingMethods MonoRemotingMethods;
48 mono_remoting_wrapper (MonoMethod *method, gpointer *params);
51 mono_marshal_set_domain_by_id (gint32 id, MonoBoolean push);
54 mono_marshal_check_domain_image (gint32 domain_id, MonoImage *image);
57 mono_upgrade_remote_class_wrapper (MonoReflectionType *rtype, MonoTransparentProxy *tproxy);
59 static MonoXDomainMarshalType
60 mono_get_xdomain_marshal_type (MonoType *t);
63 mono_marshal_xdomain_copy_out_value (MonoObject *src, MonoObject *dst);
65 static MonoReflectionType *
66 type_from_handle (MonoType *handle);
68 static mono_mutex_t remoting_mutex;
69 static gboolean remoting_mutex_inited;
71 static MonoClass *byte_array_class;
72 static MonoMethod *method_rs_serialize, *method_rs_deserialize, *method_exc_fixexc, *method_rs_appdomain_target;
73 static MonoMethod *method_set_call_context, *method_needs_context_sink, *method_rs_serialize_exc;
76 register_icall (gpointer func, const char *name, const char *sigstr, gboolean save)
78 MonoMethodSignature *sig = mono_create_icall_signature (sigstr);
80 mono_register_jit_icall (func, name, sig, save);
86 g_assert (remoting_mutex_inited);
87 mono_mutex_lock (&remoting_mutex);
91 remoting_unlock (void)
93 g_assert (remoting_mutex_inited);
94 mono_mutex_unlock (&remoting_mutex);
98 * Return the hash table pointed to by VAR, lazily creating it if neccesary.
101 get_cache (GHashTable **var, GHashFunc hash_func, GCompareFunc equal_func)
107 g_hash_table_new (hash_func, equal_func);
108 mono_memory_barrier ();
117 get_cache_full (GHashTable **var, GHashFunc hash_func, GCompareFunc equal_func, GDestroyNotify key_destroy_func, GDestroyNotify value_destroy_func)
123 g_hash_table_new_full (hash_func, equal_func, key_destroy_func, value_destroy_func);
124 mono_memory_barrier ();
133 mono_remoting_init (void)
135 mono_mutex_init (&remoting_mutex);
136 remoting_mutex_inited = TRUE;
140 mono_remoting_marshal_init (void)
144 static gboolean module_initialized = FALSE;
146 if (module_initialized)
149 klass = mono_class_from_name (mono_defaults.corlib, "System.Runtime.Remoting", "RemotingServices");
150 method_rs_serialize = mono_class_get_method_from_name (klass, "SerializeCallData", -1);
151 method_rs_deserialize = mono_class_get_method_from_name (klass, "DeserializeCallData", -1);
152 method_rs_serialize_exc = mono_class_get_method_from_name (klass, "SerializeExceptionData", -1);
154 klass = mono_defaults.real_proxy_class;
155 method_rs_appdomain_target = mono_class_get_method_from_name (klass, "GetAppDomainTarget", -1);
157 klass = mono_defaults.exception_class;
158 method_exc_fixexc = mono_class_get_method_from_name (klass, "FixRemotingException", -1);
160 byte_array_class = mono_array_class_get (mono_defaults.byte_class, 1);
162 klass = mono_class_from_name (mono_defaults.corlib, "System.Runtime.Remoting.Messaging", "CallContext");
163 method_set_call_context = mono_class_get_method_from_name (klass, "SetCurrentCallContext", -1);
165 klass = mono_class_from_name (mono_defaults.corlib, "System.Runtime.Remoting.Contexts", "Context");
166 method_needs_context_sink = mono_class_get_method_from_name (klass, "get_NeedsContextSink", -1);
168 register_icall (type_from_handle, "type_from_handle", "object ptr", FALSE);
169 register_icall (mono_marshal_set_domain_by_id, "mono_marshal_set_domain_by_id", "int32 int32 int32", FALSE);
170 register_icall (mono_marshal_check_domain_image, "mono_marshal_check_domain_image", "int32 int32 ptr", FALSE);
171 register_icall (mono_marshal_xdomain_copy_value, "mono_marshal_xdomain_copy_value", "object object", FALSE);
172 register_icall (mono_marshal_xdomain_copy_out_value, "mono_marshal_xdomain_copy_out_value", "void object object", FALSE);
173 register_icall (mono_remoting_wrapper, "mono_remoting_wrapper", "object ptr ptr", FALSE);
174 register_icall (mono_upgrade_remote_class_wrapper, "mono_upgrade_remote_class_wrapper", "void object object", FALSE);
176 module_initialized = TRUE;
179 static MonoReflectionType *
180 type_from_handle (MonoType *handle)
182 MonoDomain *domain = mono_domain_get ();
183 MonoClass *klass = mono_class_from_mono_type (handle);
187 mono_class_init (klass);
188 return mono_type_get_object (domain, handle);
193 mono_mb_emit_proxy_check (MonoMethodBuilder *mb, int branch_code)
196 mono_mb_emit_ldflda (mb, MONO_STRUCT_OFFSET (MonoObject, vtable));
197 mono_mb_emit_byte (mb, CEE_LDIND_I);
198 mono_mb_emit_icon (mb, MONO_STRUCT_OFFSET (MonoVTable, klass));
199 mono_mb_emit_byte (mb, CEE_ADD);
200 mono_mb_emit_byte (mb, CEE_LDIND_I);
201 mono_mb_emit_byte (mb, MONO_CUSTOM_PREFIX);
202 mono_mb_emit_byte (mb, CEE_MONO_CLASSCONST);
203 mono_mb_emit_i4 (mb, mono_mb_add_data (mb, mono_defaults.transparent_proxy_class));
204 pos = mono_mb_emit_branch (mb, branch_code);
209 mono_mb_emit_xdomain_check (MonoMethodBuilder *mb, int branch_code)
212 mono_mb_emit_ldflda (mb, MONO_STRUCT_OFFSET (MonoTransparentProxy, rp));
213 mono_mb_emit_byte (mb, CEE_LDIND_REF);
214 mono_mb_emit_ldflda (mb, MONO_STRUCT_OFFSET (MonoRealProxy, target_domain_id));
215 mono_mb_emit_byte (mb, CEE_LDIND_I4);
216 mono_mb_emit_icon (mb, -1);
217 pos = mono_mb_emit_branch (mb, branch_code);
222 mono_mb_emit_contextbound_check (MonoMethodBuilder *mb, int branch_code)
224 static int offset = -1;
228 mono_marshal_find_bitfield_offset (MonoClass, contextbound, &offset, &mask);
230 mono_mb_emit_ldflda (mb, MONO_STRUCT_OFFSET (MonoTransparentProxy, remote_class));
231 mono_mb_emit_byte (mb, CEE_LDIND_REF);
232 mono_mb_emit_ldflda (mb, MONO_STRUCT_OFFSET (MonoRemoteClass, proxy_class));
233 mono_mb_emit_byte (mb, CEE_LDIND_REF);
234 mono_mb_emit_ldflda (mb, offset);
235 mono_mb_emit_byte (mb, CEE_LDIND_U1);
236 mono_mb_emit_icon (mb, mask);
237 mono_mb_emit_byte (mb, CEE_AND);
238 mono_mb_emit_icon (mb, 0);
239 return mono_mb_emit_branch (mb, branch_code);
241 #endif /* !DISABLE_JIT */
243 static inline MonoMethod*
244 mono_marshal_remoting_find_in_cache (MonoMethod *method, int wrapper_type)
246 MonoMethod *res = NULL;
247 MonoRemotingMethods *wrps;
249 mono_marshal_lock_internal ();
250 if (method->klass->image->remoting_invoke_cache)
251 wrps = g_hash_table_lookup (method->klass->image->remoting_invoke_cache, method);
256 switch (wrapper_type) {
257 case MONO_WRAPPER_REMOTING_INVOKE: res = wrps->invoke; break;
258 case MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK: res = wrps->invoke_with_check; break;
259 case MONO_WRAPPER_XDOMAIN_INVOKE: res = wrps->xdomain_invoke; break;
260 case MONO_WRAPPER_XDOMAIN_DISPATCH: res = wrps->xdomain_dispatch; break;
264 /* it is important to do the unlock after the load from wrps, since in
265 * mono_remoting_mb_create_and_cache () we drop the marshal lock to be able
266 * to take the loader lock and some other thread may set the fields.
268 mono_marshal_unlock_internal ();
272 /* Create the method from the builder and place it in the cache */
273 static inline MonoMethod*
274 mono_remoting_mb_create_and_cache (MonoMethod *key, MonoMethodBuilder *mb,
275 MonoMethodSignature *sig, int max_stack)
277 MonoMethod **res = NULL;
278 MonoRemotingMethods *wrps;
279 GHashTable *cache = get_cache_full (&key->klass->image->remoting_invoke_cache, mono_aligned_addr_hash, NULL, NULL, g_free);
281 mono_marshal_lock_internal ();
282 wrps = g_hash_table_lookup (cache, key);
284 wrps = g_new0 (MonoRemotingMethods, 1);
285 g_hash_table_insert (cache, key, wrps);
288 switch (mb->method->wrapper_type) {
289 case MONO_WRAPPER_REMOTING_INVOKE: res = &wrps->invoke; break;
290 case MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK: res = &wrps->invoke_with_check; break;
291 case MONO_WRAPPER_XDOMAIN_INVOKE: res = &wrps->xdomain_invoke; break;
292 case MONO_WRAPPER_XDOMAIN_DISPATCH: res = &wrps->xdomain_dispatch; break;
293 default: g_assert_not_reached (); break;
295 mono_marshal_unlock_internal ();
299 newm = mono_mb_create_method (mb, sig, max_stack);
301 mono_marshal_lock_internal ();
304 mono_marshal_set_wrapper_info (*res, key);
305 mono_marshal_unlock_internal ();
307 mono_marshal_unlock_internal ();
308 mono_free_method (newm);
316 mono_remoting_wrapper (MonoMethod *method, gpointer *params)
318 MonoMethodMessage *msg;
319 MonoTransparentProxy *this;
320 MonoObject *res, *exc;
323 this = *((MonoTransparentProxy **)params [0]);
326 g_assert (((MonoObject *)this)->vtable->klass == mono_defaults.transparent_proxy_class);
328 /* skip the this pointer */
331 if (mono_class_is_contextbound (this->remote_class->proxy_class) && this->rp->context == (MonoObject *) mono_context_get ())
334 MonoMethodSignature *sig = mono_method_signature (method);
335 int count = sig->param_count;
336 gpointer* mparams = (gpointer*) alloca(count*sizeof(gpointer));
338 for (i=0; i<count; i++) {
339 MonoClass *class = mono_class_from_mono_type (sig->params [i]);
340 if (class->valuetype) {
341 if (sig->params [i]->byref) {
342 mparams[i] = *((gpointer *)params [i]);
344 /* runtime_invoke expects a boxed instance */
345 if (mono_class_is_nullable (mono_class_from_mono_type (sig->params [i])))
346 mparams[i] = mono_nullable_box (params [i], class);
348 mparams[i] = params [i];
351 mparams[i] = *((gpointer**)params [i]);
355 return mono_runtime_invoke (method, method->klass->valuetype? mono_object_unbox ((MonoObject*)this): this, mparams, NULL);
358 msg = mono_method_call_message_new (method, params, NULL, NULL, NULL);
360 res = mono_remoting_invoke ((MonoObject *)this->rp, msg, &exc, &out_args);
363 mono_raise_exception ((MonoException *)exc);
365 mono_method_return_message_restore (method, params, out_args);
371 mono_marshal_get_remoting_invoke (MonoMethod *method)
373 MonoMethodSignature *sig;
374 MonoMethodBuilder *mb;
380 if (method->wrapper_type == MONO_WRAPPER_REMOTING_INVOKE || method->wrapper_type == MONO_WRAPPER_XDOMAIN_INVOKE)
383 /* this seems to be the best plase to put this, as all remoting invokes seem to get filtered through here */
385 if (mono_class_is_com_object (method->klass) || method->klass == mono_class_get_com_object_class ()) {
386 MonoVTable *vtable = mono_class_vtable (mono_domain_get (), method->klass);
387 g_assert (vtable); /*FIXME do proper error handling*/
389 if (!mono_vtable_is_remote (vtable)) {
390 return mono_cominterop_get_invoke (method);
395 sig = mono_signature_no_pinvoke (method);
397 /* we cant remote methods without this pointer */
401 if ((res = mono_marshal_remoting_find_in_cache (method, MONO_WRAPPER_REMOTING_INVOKE)))
404 mono_remoting_marshal_init ();
406 mb = mono_mb_new (method->klass, method->name, MONO_WRAPPER_REMOTING_INVOKE);
409 mb->method->save_lmf = 1;
411 params_var = mono_mb_emit_save_args (mb, sig, TRUE);
413 mono_mb_emit_ptr (mb, method);
414 mono_mb_emit_ldloc (mb, params_var);
415 mono_mb_emit_icall (mb, mono_remoting_wrapper);
416 mono_marshal_emit_thread_interrupt_checkpoint (mb);
418 if (sig->ret->type == MONO_TYPE_VOID) {
419 mono_mb_emit_byte (mb, CEE_POP);
420 mono_mb_emit_byte (mb, CEE_RET);
422 mono_mb_emit_restore_result (mb, sig->ret);
426 res = mono_remoting_mb_create_and_cache (method, mb, sig, sig->param_count + 16);
432 /* mono_marshal_xdomain_copy_out_value()
433 * Copies the contents of the src instance into the dst instance. src and dst
434 * must have the same type, and if they are arrays, the same size.
437 mono_marshal_xdomain_copy_out_value (MonoObject *src, MonoObject *dst)
439 if (src == NULL || dst == NULL) return;
441 g_assert (mono_object_class (src) == mono_object_class (dst));
443 switch (mono_object_class (src)->byval_arg.type) {
444 case MONO_TYPE_ARRAY:
445 case MONO_TYPE_SZARRAY: {
446 int mt = mono_get_xdomain_marshal_type (&(mono_object_class (src)->element_class->byval_arg));
447 if (mt == MONO_MARSHAL_SERIALIZE) return;
448 if (mt == MONO_MARSHAL_COPY) {
449 int i, len = mono_array_length ((MonoArray *)dst);
450 for (i = 0; i < len; i++) {
451 MonoObject *item = mono_array_get ((MonoArray *)src, gpointer, i);
452 mono_array_setref ((MonoArray *)dst, i, mono_marshal_xdomain_copy_value (item));
455 mono_array_full_copy ((MonoArray *)src, (MonoArray *)dst);
461 if (mono_object_class (src) == mono_defaults.stringbuilder_class) {
462 MonoStringBuilder *src_sb = (MonoStringBuilder *) src;
463 MonoStringBuilder *dst_sb = (MonoStringBuilder *) dst;
465 MONO_OBJECT_SETREF (dst_sb, str, mono_string_new_utf16 (mono_object_domain (dst), mono_string_chars (src_sb->str), mono_string_length (src_sb->str)));
466 dst_sb->cached_str = NULL;
467 dst_sb->length = src_sb->length;
472 #if !defined (DISABLE_JIT)
474 mono_marshal_emit_xdomain_copy_value (MonoMethodBuilder *mb, MonoClass *pclass)
476 mono_mb_emit_icall (mb, mono_marshal_xdomain_copy_value);
477 mono_mb_emit_op (mb, CEE_CASTCLASS, pclass);
481 mono_marshal_emit_xdomain_copy_out_value (MonoMethodBuilder *mb, MonoClass *pclass)
483 mono_mb_emit_icall (mb, mono_marshal_xdomain_copy_out_value);
487 /* mono_marshal_supports_fast_xdomain()
488 * Returns TRUE if the method can use the fast xdomain wrapper.
491 mono_marshal_supports_fast_xdomain (MonoMethod *method)
493 return !mono_class_is_contextbound (method->klass) &&
494 !((method->flags & METHOD_ATTRIBUTE_SPECIAL_NAME) && (strcmp (".ctor", method->name) == 0));
498 mono_marshal_set_domain_by_id (gint32 id, MonoBoolean push)
500 MonoDomain *current_domain = mono_domain_get ();
501 MonoDomain *domain = mono_domain_get_by_id (id);
503 if (!domain || !mono_domain_set (domain, FALSE))
504 mono_raise_exception (mono_get_exception_appdomain_unloaded ());
507 mono_thread_push_appdomain_ref (domain);
509 mono_thread_pop_appdomain_ref ();
511 return current_domain->domain_id;
514 #if !defined (DISABLE_JIT)
516 mono_marshal_emit_switch_domain (MonoMethodBuilder *mb)
518 mono_mb_emit_icall (mb, mono_marshal_set_domain_by_id);
521 /* mono_marshal_emit_load_domain_method ()
522 * Loads into the stack a pointer to the code of the provided method for
523 * the current domain.
526 mono_marshal_emit_load_domain_method (MonoMethodBuilder *mb, MonoMethod *method)
528 /* We need a pointer to the method for the running domain (not the domain
529 * that compiles the method).
531 mono_mb_emit_ptr (mb, method);
532 mono_mb_emit_icall (mb, mono_compile_method);
536 /* mono_marshal_check_domain_image ()
537 * Returns TRUE if the image is loaded in the specified
538 * application domain.
541 mono_marshal_check_domain_image (gint32 domain_id, MonoImage *image)
546 MonoDomain *domain = mono_domain_get_by_id (domain_id);
550 mono_domain_assemblies_lock (domain);
551 for (tmp = domain->domain_assemblies; tmp; tmp = tmp->next) {
553 if (ass->image == image)
556 mono_domain_assemblies_unlock (domain);
561 /* mono_marshal_get_xappdomain_dispatch ()
562 * Generates a method that dispatches a method call from another domain into
563 * the current domain.
566 mono_marshal_get_xappdomain_dispatch (MonoMethod *method, int *marshal_types, int complex_count, int complex_out_count, int ret_marshal_type)
568 MonoMethodSignature *sig, *csig;
569 MonoMethodBuilder *mb;
571 int i, j, param_index, copy_locals_base;
572 MonoClass *ret_class = NULL;
573 int loc_array=0, loc_return=0, loc_serialized_exc=0;
574 MonoExceptionClause *main_clause;
576 gboolean copy_return;
578 if ((res = mono_marshal_remoting_find_in_cache (method, MONO_WRAPPER_XDOMAIN_DISPATCH)))
581 sig = mono_method_signature (method);
582 copy_return = (sig->ret->type != MONO_TYPE_VOID && ret_marshal_type != MONO_MARSHAL_SERIALIZE);
585 csig = mono_metadata_signature_alloc (mono_defaults.corlib, 3 + sig->param_count - complex_count);
586 csig->params [j++] = &mono_defaults.object_class->byval_arg;
587 csig->params [j++] = &byte_array_class->this_arg;
588 csig->params [j++] = &byte_array_class->this_arg;
589 for (i = 0; i < sig->param_count; i++) {
590 if (marshal_types [i] != MONO_MARSHAL_SERIALIZE)
591 csig->params [j++] = sig->params [i];
594 csig->ret = sig->ret;
596 csig->ret = &mono_defaults.void_class->byval_arg;
598 csig->hasthis = FALSE;
600 mb = mono_mb_new (method->klass, method->name, MONO_WRAPPER_XDOMAIN_DISPATCH);
601 mb->method->save_lmf = 1;
606 loc_serialized_exc = mono_mb_add_local (mb, &byte_array_class->byval_arg);
607 if (complex_count > 0)
608 loc_array = mono_mb_add_local (mb, &mono_defaults.object_class->byval_arg);
609 if (sig->ret->type != MONO_TYPE_VOID) {
610 loc_return = mono_mb_add_local (mb, sig->ret);
611 ret_class = mono_class_from_mono_type (sig->ret);
616 main_clause = mono_image_alloc0 (method->klass->image, sizeof (MonoExceptionClause));
617 main_clause->try_offset = mono_mb_get_label (mb);
619 /* Clean the call context */
621 mono_mb_emit_byte (mb, CEE_LDNULL);
622 mono_mb_emit_managed_call (mb, method_set_call_context, NULL);
623 mono_mb_emit_byte (mb, CEE_POP);
625 /* Deserialize call data */
627 mono_mb_emit_ldarg (mb, 1);
628 mono_mb_emit_byte (mb, CEE_LDIND_REF);
629 mono_mb_emit_byte (mb, CEE_DUP);
630 pos = mono_mb_emit_short_branch (mb, CEE_BRFALSE_S);
632 mono_marshal_emit_xdomain_copy_value (mb, byte_array_class);
633 mono_mb_emit_managed_call (mb, method_rs_deserialize, NULL);
635 if (complex_count > 0)
636 mono_mb_emit_stloc (mb, loc_array);
638 mono_mb_emit_byte (mb, CEE_POP);
640 mono_mb_patch_short_branch (mb, pos);
642 /* Get the target object */
644 mono_mb_emit_ldarg (mb, 0);
645 mono_mb_emit_managed_call (mb, method_rs_appdomain_target, NULL);
647 /* Load the arguments */
649 copy_locals_base = mb->locals;
650 param_index = 3; // Index of the first non-serialized parameter of this wrapper
652 for (i = 0; i < sig->param_count; i++) {
653 MonoType *pt = sig->params [i];
654 MonoClass *pclass = mono_class_from_mono_type (pt);
655 switch (marshal_types [i]) {
656 case MONO_MARSHAL_SERIALIZE: {
657 /* take the value from the serialized array */
658 mono_mb_emit_ldloc (mb, loc_array);
659 mono_mb_emit_icon (mb, j++);
661 if (pclass->valuetype) {
662 mono_mb_emit_byte (mb, CEE_LDELEM_REF);
663 mono_mb_emit_op (mb, CEE_UNBOX, pclass);
665 mono_mb_emit_op (mb, CEE_LDELEMA, pclass);
668 if (pclass->valuetype) {
669 mono_mb_emit_byte (mb, CEE_LDELEM_REF);
670 mono_mb_emit_op (mb, CEE_UNBOX, pclass);
671 mono_mb_emit_op (mb, CEE_LDOBJ, pclass);
673 mono_mb_emit_byte (mb, CEE_LDELEM_REF);
674 if (pclass != mono_defaults.object_class) {
675 mono_mb_emit_op (mb, CEE_CASTCLASS, pclass);
681 case MONO_MARSHAL_COPY_OUT: {
682 /* Keep a local copy of the value since we need to copy it back after the call */
683 int copy_local = mono_mb_add_local (mb, &(pclass->byval_arg));
684 mono_mb_emit_ldarg (mb, param_index++);
685 mono_marshal_emit_xdomain_copy_value (mb, pclass);
686 mono_mb_emit_byte (mb, CEE_DUP);
687 mono_mb_emit_stloc (mb, copy_local);
690 case MONO_MARSHAL_COPY: {
691 mono_mb_emit_ldarg (mb, param_index);
693 mono_mb_emit_byte (mb, CEE_DUP);
694 mono_mb_emit_byte (mb, CEE_DUP);
695 mono_mb_emit_byte (mb, CEE_LDIND_REF);
696 mono_marshal_emit_xdomain_copy_value (mb, pclass);
697 mono_mb_emit_byte (mb, CEE_STIND_REF);
699 mono_marshal_emit_xdomain_copy_value (mb, pclass);
704 case MONO_MARSHAL_NONE:
705 mono_mb_emit_ldarg (mb, param_index++);
710 /* Make the call to the real object */
712 mono_marshal_emit_thread_force_interrupt_checkpoint (mb);
714 mono_mb_emit_op (mb, CEE_CALLVIRT, method);
716 if (sig->ret->type != MONO_TYPE_VOID)
717 mono_mb_emit_stloc (mb, loc_return);
719 /* copy back MONO_MARSHAL_COPY_OUT parameters */
723 for (i = 0; i < sig->param_count; i++) {
724 if (marshal_types [i] == MONO_MARSHAL_SERIALIZE) continue;
725 if (marshal_types [i] == MONO_MARSHAL_COPY_OUT) {
726 mono_mb_emit_ldloc (mb, copy_locals_base + (j++));
727 mono_mb_emit_ldarg (mb, param_index);
728 mono_marshal_emit_xdomain_copy_out_value (mb, mono_class_from_mono_type (sig->params [i]));
733 /* Serialize the return values */
735 if (complex_out_count > 0) {
736 /* Reset parameters in the array that don't need to be serialized back */
738 for (i = 0; i < sig->param_count; i++) {
739 if (marshal_types[i] != MONO_MARSHAL_SERIALIZE) continue;
740 if (!sig->params [i]->byref) {
741 mono_mb_emit_ldloc (mb, loc_array);
742 mono_mb_emit_icon (mb, j);
743 mono_mb_emit_byte (mb, CEE_LDNULL);
744 mono_mb_emit_byte (mb, CEE_STELEM_REF);
749 /* Add the return value to the array */
751 if (ret_marshal_type == MONO_MARSHAL_SERIALIZE) {
752 mono_mb_emit_ldloc (mb, loc_array);
753 mono_mb_emit_icon (mb, complex_count); /* The array has an additional slot to hold the ret value */
754 mono_mb_emit_ldloc (mb, loc_return);
756 g_assert (ret_class); /*FIXME properly fail here*/
757 if (ret_class->valuetype) {
758 mono_mb_emit_op (mb, CEE_BOX, ret_class);
760 mono_mb_emit_byte (mb, CEE_STELEM_REF);
765 mono_mb_emit_ldarg (mb, 1);
766 mono_mb_emit_ldloc (mb, loc_array);
767 mono_mb_emit_managed_call (mb, method_rs_serialize, NULL);
768 mono_mb_emit_byte (mb, CEE_STIND_REF);
769 } else if (ret_marshal_type == MONO_MARSHAL_SERIALIZE) {
770 mono_mb_emit_ldarg (mb, 1);
771 mono_mb_emit_ldloc (mb, loc_return);
772 if (ret_class->valuetype) {
773 mono_mb_emit_op (mb, CEE_BOX, ret_class);
775 mono_mb_emit_managed_call (mb, method_rs_serialize, NULL);
776 mono_mb_emit_byte (mb, CEE_STIND_REF);
778 mono_mb_emit_ldarg (mb, 1);
779 mono_mb_emit_byte (mb, CEE_LDNULL);
780 mono_mb_emit_managed_call (mb, method_rs_serialize, NULL);
781 mono_mb_emit_byte (mb, CEE_STIND_REF);
784 mono_mb_emit_ldarg (mb, 2);
785 mono_mb_emit_byte (mb, CEE_LDNULL);
786 mono_mb_emit_byte (mb, CEE_STIND_REF);
787 pos_leave = mono_mb_emit_branch (mb, CEE_LEAVE);
789 /* Main exception catch */
790 main_clause->flags = MONO_EXCEPTION_CLAUSE_NONE;
791 main_clause->try_len = mono_mb_get_pos (mb) - main_clause->try_offset;
792 main_clause->data.catch_class = mono_defaults.object_class;
795 main_clause->handler_offset = mono_mb_get_label (mb);
796 mono_mb_emit_managed_call (mb, method_rs_serialize_exc, NULL);
797 mono_mb_emit_stloc (mb, loc_serialized_exc);
798 mono_mb_emit_ldarg (mb, 2);
799 mono_mb_emit_ldloc (mb, loc_serialized_exc);
800 mono_mb_emit_byte (mb, CEE_STIND_REF);
801 mono_mb_emit_branch (mb, CEE_LEAVE);
802 main_clause->handler_len = mono_mb_get_pos (mb) - main_clause->handler_offset;
805 mono_mb_patch_branch (mb, pos_leave);
808 mono_mb_emit_ldloc (mb, loc_return);
810 mono_mb_emit_byte (mb, CEE_RET);
812 mono_mb_set_clauses (mb, 1, main_clause);
815 res = mono_remoting_mb_create_and_cache (method, mb, csig, csig->param_count + 16);
821 /* mono_marshal_get_xappdomain_invoke ()
822 * Generates a fast remoting wrapper for cross app domain calls.
825 mono_marshal_get_xappdomain_invoke (MonoMethod *method)
827 MonoMethodSignature *sig;
828 MonoMethodBuilder *mb;
830 int i, j, complex_count, complex_out_count, copy_locals_base;
832 MonoClass *ret_class = NULL;
833 MonoMethod *xdomain_method;
834 int ret_marshal_type = MONO_MARSHAL_NONE;
835 int loc_array=0, loc_serialized_data=-1, loc_real_proxy;
836 int loc_old_domainid, loc_domainid, loc_return=0, loc_serialized_exc=0, loc_context;
837 int pos, pos_dispatch, pos_noex;
838 gboolean copy_return = FALSE;
842 if (method->wrapper_type == MONO_WRAPPER_REMOTING_INVOKE || method->wrapper_type == MONO_WRAPPER_XDOMAIN_INVOKE)
845 /* we cant remote methods without this pointer */
846 if (!mono_method_signature (method)->hasthis)
849 mono_remoting_marshal_init ();
851 if (!mono_marshal_supports_fast_xdomain (method))
852 return mono_marshal_get_remoting_invoke (method);
854 if ((res = mono_marshal_remoting_find_in_cache (method, MONO_WRAPPER_XDOMAIN_INVOKE)))
857 sig = mono_signature_no_pinvoke (method);
859 mb = mono_mb_new (method->klass, method->name, MONO_WRAPPER_XDOMAIN_INVOKE);
860 mb->method->save_lmf = 1;
862 /* Count the number of parameters that need to be serialized */
864 marshal_types = alloca (sizeof (int) * sig->param_count);
865 complex_count = complex_out_count = 0;
866 for (i = 0; i < sig->param_count; i++) {
867 MonoType *ptype = sig->params[i];
868 int mt = mono_get_xdomain_marshal_type (ptype);
870 /* If the [Out] attribute is applied to a parameter that can be internally copied,
871 * the copy will be made by reusing the original object instance
873 if ((ptype->attrs & PARAM_ATTRIBUTE_OUT) != 0 && mt == MONO_MARSHAL_COPY && !ptype->byref)
874 mt = MONO_MARSHAL_COPY_OUT;
875 else if (mt == MONO_MARSHAL_SERIALIZE) {
877 if (ptype->byref) complex_out_count++;
879 marshal_types [i] = mt;
882 if (sig->ret->type != MONO_TYPE_VOID) {
883 ret_marshal_type = mono_get_xdomain_marshal_type (sig->ret);
884 ret_class = mono_class_from_mono_type (sig->ret);
885 copy_return = ret_marshal_type != MONO_MARSHAL_SERIALIZE;
891 if (complex_count > 0)
892 loc_array = mono_mb_add_local (mb, &mono_defaults.object_class->byval_arg);
893 loc_serialized_data = mono_mb_add_local (mb, &byte_array_class->byval_arg);
894 loc_real_proxy = mono_mb_add_local (mb, &mono_defaults.object_class->byval_arg);
896 loc_return = mono_mb_add_local (mb, sig->ret);
897 loc_old_domainid = mono_mb_add_local (mb, &mono_defaults.int32_class->byval_arg);
898 loc_domainid = mono_mb_add_local (mb, &mono_defaults.int32_class->byval_arg);
899 loc_serialized_exc = mono_mb_add_local (mb, &byte_array_class->byval_arg);
900 loc_context = mono_mb_add_local (mb, &mono_defaults.object_class->byval_arg);
902 /* Save thread domain data */
904 mono_mb_emit_icall (mb, mono_context_get);
905 mono_mb_emit_byte (mb, CEE_DUP);
906 mono_mb_emit_stloc (mb, loc_context);
908 /* If the thread is not running in the default context, it needs to go
909 * through the whole remoting sink, since the context is going to change
911 mono_mb_emit_managed_call (mb, method_needs_context_sink, NULL);
912 pos = mono_mb_emit_short_branch (mb, CEE_BRTRUE_S);
914 /* Another case in which the fast path can't be used: when the target domain
915 * has a different image for the same assembly.
918 /* Get the target domain id */
920 mono_mb_emit_ldarg (mb, 0);
921 mono_mb_emit_ldflda (mb, MONO_STRUCT_OFFSET (MonoTransparentProxy, rp));
922 mono_mb_emit_byte (mb, CEE_LDIND_REF);
923 mono_mb_emit_byte (mb, CEE_DUP);
924 mono_mb_emit_stloc (mb, loc_real_proxy);
926 mono_mb_emit_ldflda (mb, MONO_STRUCT_OFFSET (MonoRealProxy, target_domain_id));
927 mono_mb_emit_byte (mb, CEE_LDIND_I4);
928 mono_mb_emit_stloc (mb, loc_domainid);
930 /* Check if the target domain has the same image for the required assembly */
932 mono_mb_emit_ldloc (mb, loc_domainid);
933 mono_mb_emit_ptr (mb, method->klass->image);
934 mono_mb_emit_icall (mb, mono_marshal_check_domain_image);
935 pos_dispatch = mono_mb_emit_short_branch (mb, CEE_BRTRUE_S);
937 /* Use the whole remoting sink to dispatch this message */
939 mono_mb_patch_short_branch (mb, pos);
941 mono_mb_emit_ldarg (mb, 0);
942 for (i = 0; i < sig->param_count; i++)
943 mono_mb_emit_ldarg (mb, i + 1);
945 mono_mb_emit_managed_call (mb, mono_marshal_get_remoting_invoke (method), NULL);
946 mono_mb_emit_byte (mb, CEE_RET);
947 mono_mb_patch_short_branch (mb, pos_dispatch);
949 /* Create the array that will hold the parameters to be serialized */
951 if (complex_count > 0) {
952 mono_mb_emit_icon (mb, (ret_marshal_type == MONO_MARSHAL_SERIALIZE && complex_out_count > 0) ? complex_count + 1 : complex_count); /* +1 for the return type */
953 mono_mb_emit_op (mb, CEE_NEWARR, mono_defaults.object_class);
956 for (i = 0; i < sig->param_count; i++) {
958 if (marshal_types [i] != MONO_MARSHAL_SERIALIZE) continue;
959 pclass = mono_class_from_mono_type (sig->params[i]);
960 mono_mb_emit_byte (mb, CEE_DUP);
961 mono_mb_emit_icon (mb, j);
962 mono_mb_emit_ldarg (mb, i + 1); /* 0=this */
963 if (sig->params[i]->byref) {
964 if (pclass->valuetype)
965 mono_mb_emit_op (mb, CEE_LDOBJ, pclass);
967 mono_mb_emit_byte (mb, CEE_LDIND_REF);
969 if (pclass->valuetype)
970 mono_mb_emit_op (mb, CEE_BOX, pclass);
971 mono_mb_emit_byte (mb, CEE_STELEM_REF);
974 mono_mb_emit_stloc (mb, loc_array);
976 /* Serialize parameters */
978 mono_mb_emit_ldloc (mb, loc_array);
979 mono_mb_emit_managed_call (mb, method_rs_serialize, NULL);
980 mono_mb_emit_stloc (mb, loc_serialized_data);
982 mono_mb_emit_byte (mb, CEE_LDNULL);
983 mono_mb_emit_managed_call (mb, method_rs_serialize, NULL);
984 mono_mb_emit_stloc (mb, loc_serialized_data);
989 mono_mb_emit_ldloc (mb, loc_domainid);
990 mono_mb_emit_byte (mb, CEE_LDC_I4_1);
991 mono_marshal_emit_switch_domain (mb);
992 mono_mb_emit_stloc (mb, loc_old_domainid);
994 /* Load the arguments */
996 mono_mb_emit_ldloc (mb, loc_real_proxy);
997 mono_mb_emit_ldloc_addr (mb, loc_serialized_data);
998 mono_mb_emit_ldloc_addr (mb, loc_serialized_exc);
1000 copy_locals_base = mb->locals;
1001 for (i = 0; i < sig->param_count; i++) {
1002 switch (marshal_types [i]) {
1003 case MONO_MARSHAL_SERIALIZE:
1005 case MONO_MARSHAL_COPY: {
1006 mono_mb_emit_ldarg (mb, i+1);
1007 if (sig->params [i]->byref) {
1008 /* make a local copy of the byref parameter. The real parameter
1009 * will be updated after the xdomain call
1011 MonoClass *pclass = mono_class_from_mono_type (sig->params [i]);
1012 int copy_local = mono_mb_add_local (mb, &(pclass->byval_arg));
1013 mono_mb_emit_byte (mb, CEE_LDIND_REF);
1014 mono_mb_emit_stloc (mb, copy_local);
1015 mono_mb_emit_ldloc_addr (mb, copy_local);
1019 case MONO_MARSHAL_COPY_OUT:
1020 case MONO_MARSHAL_NONE:
1021 mono_mb_emit_ldarg (mb, i+1);
1026 /* Make the call to the invoke wrapper in the target domain */
1028 xdomain_method = mono_marshal_get_xappdomain_dispatch (method, marshal_types, complex_count, complex_out_count, ret_marshal_type);
1029 mono_marshal_emit_load_domain_method (mb, xdomain_method);
1030 mono_mb_emit_calli (mb, mono_method_signature (xdomain_method));
1033 mono_mb_emit_stloc (mb, loc_return);
1037 mono_mb_emit_ldloc (mb, loc_old_domainid);
1038 mono_mb_emit_byte (mb, CEE_LDC_I4_0);
1039 mono_marshal_emit_switch_domain (mb);
1040 mono_mb_emit_byte (mb, CEE_POP);
1042 /* Restore thread domain data */
1044 mono_mb_emit_ldloc (mb, loc_context);
1045 mono_mb_emit_icall (mb, mono_context_set);
1047 /* if (loc_serialized_exc != null) ... */
1049 mono_mb_emit_ldloc (mb, loc_serialized_exc);
1050 pos_noex = mono_mb_emit_short_branch (mb, CEE_BRFALSE_S);
1052 mono_mb_emit_ldloc (mb, loc_serialized_exc);
1053 mono_marshal_emit_xdomain_copy_value (mb, byte_array_class);
1054 mono_mb_emit_managed_call (mb, method_rs_deserialize, NULL);
1055 mono_mb_emit_op (mb, CEE_CASTCLASS, mono_defaults.exception_class);
1056 mono_mb_emit_managed_call (mb, method_exc_fixexc, NULL);
1057 mono_mb_emit_byte (mb, CEE_THROW);
1058 mono_mb_patch_short_branch (mb, pos_noex);
1060 /* copy back non-serialized output parameters */
1063 for (i = 0; i < sig->param_count; i++) {
1064 if (!sig->params [i]->byref || marshal_types [i] != MONO_MARSHAL_COPY) continue;
1065 mono_mb_emit_ldarg (mb, i + 1);
1066 mono_mb_emit_ldloc (mb, copy_locals_base + (j++));
1067 mono_marshal_emit_xdomain_copy_value (mb, mono_class_from_mono_type (sig->params [i]));
1068 mono_mb_emit_byte (mb, CEE_STIND_REF);
1071 /* Deserialize out parameters */
1073 if (complex_out_count > 0) {
1074 mono_mb_emit_ldloc (mb, loc_serialized_data);
1075 mono_marshal_emit_xdomain_copy_value (mb, byte_array_class);
1076 mono_mb_emit_managed_call (mb, method_rs_deserialize, NULL);
1077 mono_mb_emit_stloc (mb, loc_array);
1079 /* Copy back output parameters and return type */
1082 for (i = 0; i < sig->param_count; i++) {
1083 if (marshal_types [i] != MONO_MARSHAL_SERIALIZE) continue;
1084 if (sig->params[i]->byref) {
1085 MonoClass *pclass = mono_class_from_mono_type (sig->params [i]);
1086 mono_mb_emit_ldarg (mb, i + 1);
1087 mono_mb_emit_ldloc (mb, loc_array);
1088 mono_mb_emit_icon (mb, j);
1089 mono_mb_emit_byte (mb, CEE_LDELEM_REF);
1090 if (pclass->valuetype) {
1091 mono_mb_emit_op (mb, CEE_UNBOX, pclass);
1092 mono_mb_emit_op (mb, CEE_LDOBJ, pclass);
1093 mono_mb_emit_op (mb, CEE_STOBJ, pclass);
1095 if (pclass != mono_defaults.object_class)
1096 mono_mb_emit_op (mb, CEE_CASTCLASS, pclass);
1097 mono_mb_emit_byte (mb, CEE_STIND_REF);
1103 if (ret_marshal_type == MONO_MARSHAL_SERIALIZE) {
1104 mono_mb_emit_ldloc (mb, loc_array);
1105 mono_mb_emit_icon (mb, complex_count);
1106 mono_mb_emit_byte (mb, CEE_LDELEM_REF);
1107 if (ret_class->valuetype) {
1108 mono_mb_emit_op (mb, CEE_UNBOX, ret_class);
1109 mono_mb_emit_op (mb, CEE_LDOBJ, ret_class);
1112 } else if (ret_marshal_type == MONO_MARSHAL_SERIALIZE) {
1113 mono_mb_emit_ldloc (mb, loc_serialized_data);
1114 mono_marshal_emit_xdomain_copy_value (mb, byte_array_class);
1115 mono_mb_emit_managed_call (mb, method_rs_deserialize, NULL);
1116 if (ret_class->valuetype) {
1117 mono_mb_emit_op (mb, CEE_UNBOX, ret_class);
1118 mono_mb_emit_op (mb, CEE_LDOBJ, ret_class);
1119 } else if (ret_class != mono_defaults.object_class) {
1120 mono_mb_emit_op (mb, CEE_CASTCLASS, ret_class);
1123 mono_mb_emit_ldloc (mb, loc_serialized_data);
1124 mono_mb_emit_byte (mb, CEE_DUP);
1125 pos = mono_mb_emit_short_branch (mb, CEE_BRFALSE_S);
1126 mono_marshal_emit_xdomain_copy_value (mb, byte_array_class);
1128 mono_mb_patch_short_branch (mb, pos);
1129 mono_mb_emit_managed_call (mb, method_rs_deserialize, NULL);
1130 mono_mb_emit_byte (mb, CEE_POP);
1134 mono_mb_emit_ldloc (mb, loc_return);
1135 if (ret_marshal_type == MONO_MARSHAL_COPY)
1136 mono_marshal_emit_xdomain_copy_value (mb, ret_class);
1139 mono_mb_emit_byte (mb, CEE_RET);
1140 #endif /* DISABLE_JIT */
1142 res = mono_remoting_mb_create_and_cache (method, mb, sig, sig->param_count + 16);
1149 mono_marshal_get_remoting_invoke_for_target (MonoMethod *method, MonoRemotingTarget target_type)
1151 if (target_type == MONO_REMOTING_TARGET_APPDOMAIN) {
1152 return mono_marshal_get_xappdomain_invoke (method);
1153 } else if (target_type == MONO_REMOTING_TARGET_COMINTEROP) {
1155 return mono_cominterop_get_invoke (method);
1157 g_assert_not_reached ();
1160 return mono_marshal_get_remoting_invoke (method);
1166 G_GNUC_UNUSED static gpointer
1167 mono_marshal_load_remoting_wrapper (MonoRealProxy *rp, MonoMethod *method)
1169 if (rp->target_domain_id != -1)
1170 return mono_compile_method (mono_marshal_get_xappdomain_invoke (method));
1172 return mono_compile_method (mono_marshal_get_remoting_invoke (method));
1176 mono_marshal_get_remoting_invoke_with_check (MonoMethod *method)
1178 MonoMethodSignature *sig;
1179 MonoMethodBuilder *mb;
1180 MonoMethod *res, *native;
1181 int i, pos, pos_rem;
1185 if (method->wrapper_type == MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK)
1188 /* we cant remote methods without this pointer */
1189 g_assert (mono_method_signature (method)->hasthis);
1191 if ((res = mono_marshal_remoting_find_in_cache (method, MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK)))
1194 sig = mono_signature_no_pinvoke (method);
1196 mb = mono_mb_new (method->klass, method->name, MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK);
1199 for (i = 0; i <= sig->param_count; i++)
1200 mono_mb_emit_ldarg (mb, i);
1202 mono_mb_emit_ldarg (mb, 0);
1203 pos = mono_mb_emit_proxy_check (mb, CEE_BNE_UN);
1205 if (mono_marshal_supports_fast_xdomain (method)) {
1206 mono_mb_emit_ldarg (mb, 0);
1207 pos_rem = mono_mb_emit_xdomain_check (mb, CEE_BEQ);
1209 /* wrapper for cross app domain calls */
1210 native = mono_marshal_get_xappdomain_invoke (method);
1211 mono_mb_emit_managed_call (mb, native, mono_method_signature (native));
1212 mono_mb_emit_byte (mb, CEE_RET);
1214 mono_mb_patch_branch (mb, pos_rem);
1216 /* wrapper for normal remote calls */
1217 native = mono_marshal_get_remoting_invoke (method);
1218 mono_mb_emit_managed_call (mb, native, mono_method_signature (native));
1219 mono_mb_emit_byte (mb, CEE_RET);
1222 mono_mb_patch_branch (mb, pos);
1223 mono_mb_emit_managed_call (mb, method, mono_method_signature (method));
1224 mono_mb_emit_byte (mb, CEE_RET);
1227 res = mono_remoting_mb_create_and_cache (method, mb, sig, sig->param_count + 16);
1234 * mono_marshal_get_ldfld_remote_wrapper:
1235 * @klass: The return type
1237 * This method generates a wrapper for calling mono_load_remote_field_new.
1238 * The return type is ignored for now, as mono_load_remote_field_new () always
1239 * returns an object. In the future, to optimize some codepaths, we might
1240 * call a different function that takes a pointer to a valuetype, instead.
1243 mono_marshal_get_ldfld_remote_wrapper (MonoClass *klass)
1245 MonoMethodSignature *sig, *csig;
1246 MonoMethodBuilder *mb;
1248 static MonoMethod* cached = NULL;
1250 mono_marshal_lock_internal ();
1252 mono_marshal_unlock_internal ();
1255 mono_marshal_unlock_internal ();
1257 mb = mono_mb_new_no_dup_name (mono_defaults.object_class, "__mono_load_remote_field_new_wrapper", MONO_WRAPPER_LDFLD_REMOTE);
1259 mb->method->save_lmf = 1;
1261 sig = mono_metadata_signature_alloc (mono_defaults.corlib, 3);
1262 sig->params [0] = &mono_defaults.object_class->byval_arg;
1263 sig->params [1] = &mono_defaults.int_class->byval_arg;
1264 sig->params [2] = &mono_defaults.int_class->byval_arg;
1265 sig->ret = &mono_defaults.object_class->byval_arg;
1268 mono_mb_emit_ldarg (mb, 0);
1269 mono_mb_emit_ldarg (mb, 1);
1270 mono_mb_emit_ldarg (mb, 2);
1272 csig = mono_metadata_signature_alloc (mono_defaults.corlib, 3);
1273 csig->params [0] = &mono_defaults.object_class->byval_arg;
1274 csig->params [1] = &mono_defaults.int_class->byval_arg;
1275 csig->params [2] = &mono_defaults.int_class->byval_arg;
1276 csig->ret = &mono_defaults.object_class->byval_arg;
1279 mono_mb_emit_native_call (mb, csig, mono_load_remote_field_new);
1280 mono_marshal_emit_thread_interrupt_checkpoint (mb);
1282 mono_mb_emit_byte (mb, CEE_RET);
1285 mono_marshal_lock_internal ();
1287 mono_marshal_unlock_internal ();
1290 newm = mono_mb_create (mb, sig, 4, NULL);
1291 mono_marshal_lock_internal ();
1296 mono_marshal_unlock_internal ();
1298 mono_marshal_unlock_internal ();
1299 mono_free_method (newm);
1308 * mono_marshal_get_ldfld_wrapper:
1309 * @type: the type of the field
1311 * This method generates a function which can be use to load a field with type
1312 * @type from an object. The generated function has the following signature:
1313 * <@type> ldfld_wrapper (MonoObject *this, MonoClass *class, MonoClassField *field, int offset)
1316 mono_marshal_get_ldfld_wrapper (MonoType *type)
1318 MonoMethodSignature *sig;
1319 MonoMethodBuilder *mb;
1325 int t, pos0, pos1 = 0;
1327 type = mono_type_get_underlying_type (type);
1332 if (type->type == MONO_TYPE_SZARRAY) {
1333 klass = mono_defaults.array_class;
1334 } else if (type->type == MONO_TYPE_VALUETYPE) {
1335 klass = type->data.klass;
1336 } else if (t == MONO_TYPE_OBJECT || t == MONO_TYPE_CLASS || t == MONO_TYPE_STRING) {
1337 klass = mono_defaults.object_class;
1338 } else if (t == MONO_TYPE_PTR || t == MONO_TYPE_FNPTR) {
1339 klass = mono_defaults.int_class;
1340 } else if (t == MONO_TYPE_GENERICINST) {
1341 if (mono_type_generic_inst_is_valuetype (type))
1342 klass = mono_class_from_mono_type (type);
1344 klass = mono_defaults.object_class;
1346 klass = mono_class_from_mono_type (type);
1349 klass = mono_defaults.int_class;
1352 cache = get_cache (&klass->image->ldfld_wrapper_cache, mono_aligned_addr_hash, NULL);
1353 if ((res = mono_marshal_find_in_cache (cache, klass)))
1356 /* we add the %p pointer value of klass because class names are not unique */
1357 name = g_strdup_printf ("__ldfld_wrapper_%p_%s.%s", klass, klass->name_space, klass->name);
1358 mb = mono_mb_new (mono_defaults.object_class, name, MONO_WRAPPER_LDFLD);
1361 sig = mono_metadata_signature_alloc (mono_defaults.corlib, 4);
1362 sig->params [0] = &mono_defaults.object_class->byval_arg;
1363 sig->params [1] = &mono_defaults.int_class->byval_arg;
1364 sig->params [2] = &mono_defaults.int_class->byval_arg;
1365 sig->params [3] = &mono_defaults.int_class->byval_arg;
1366 sig->ret = &klass->byval_arg;
1369 mono_mb_emit_ldarg (mb, 0);
1370 pos0 = mono_mb_emit_proxy_check (mb, CEE_BNE_UN);
1372 mono_mb_emit_ldarg (mb, 0);
1373 mono_mb_emit_ldarg (mb, 1);
1374 mono_mb_emit_ldarg (mb, 2);
1376 mono_mb_emit_managed_call (mb, mono_marshal_get_ldfld_remote_wrapper (klass), NULL);
1379 csig = mono_metadata_signature_alloc (mono_defaults.corlib, 3);
1380 csig->params [0] = &mono_defaults.object_class->byval_arg;
1381 csig->params [1] = &mono_defaults.int_class->byval_arg;
1382 csig->params [2] = &mono_defaults.int_class->byval_arg;
1383 csig->ret = &klass->this_arg;
1386 mono_mb_emit_native_call (mb, csig, mono_load_remote_field_new);
1387 mono_marshal_emit_thread_interrupt_checkpoint (mb);
1390 if (klass->valuetype) {
1391 mono_mb_emit_op (mb, CEE_UNBOX, klass);
1392 pos1 = mono_mb_emit_branch (mb, CEE_BR);
1394 mono_mb_emit_byte (mb, CEE_RET);
1397 mono_mb_patch_branch (mb, pos0);
1399 mono_mb_emit_ldarg (mb, 0);
1400 mono_mb_emit_byte (mb, MONO_CUSTOM_PREFIX);
1401 mono_mb_emit_byte (mb, CEE_MONO_OBJADDR);
1402 mono_mb_emit_ldarg (mb, 3);
1403 mono_mb_emit_byte (mb, CEE_ADD);
1405 if (klass->valuetype)
1406 mono_mb_patch_branch (mb, pos1);
1411 case MONO_TYPE_BOOLEAN:
1412 case MONO_TYPE_CHAR:
1421 case MONO_TYPE_ARRAY:
1422 case MONO_TYPE_SZARRAY:
1423 case MONO_TYPE_OBJECT:
1424 case MONO_TYPE_CLASS:
1425 case MONO_TYPE_STRING:
1429 case MONO_TYPE_FNPTR:
1430 mono_mb_emit_byte (mb, mono_type_to_ldind (type));
1432 case MONO_TYPE_VALUETYPE:
1433 g_assert (!klass->enumtype);
1434 mono_mb_emit_op (mb, CEE_LDOBJ, klass);
1436 case MONO_TYPE_GENERICINST:
1437 if (mono_type_generic_inst_is_valuetype (type)) {
1438 mono_mb_emit_op (mb, CEE_LDOBJ, klass);
1440 mono_mb_emit_byte (mb, CEE_LDIND_REF);
1444 case MONO_TYPE_MVAR:
1445 mono_mb_emit_op (mb, CEE_LDOBJ, klass);
1448 g_warning ("type %x not implemented", type->type);
1449 g_assert_not_reached ();
1452 mono_mb_emit_byte (mb, CEE_RET);
1453 #endif /* DISABLE_JIT */
1455 info = mono_wrapper_info_create (mb, WRAPPER_SUBTYPE_NONE);
1456 info->d.proxy.klass = klass;
1457 res = mono_mb_create_and_cache_full (cache, klass,
1458 mb, sig, sig->param_count + 16, info, NULL);
1465 * mono_marshal_get_ldflda_wrapper:
1466 * @type: the type of the field
1468 * This method generates a function which can be used to load a field address
1469 * from an object. The generated function has the following signature:
1470 * gpointer ldflda_wrapper (MonoObject *this, MonoClass *class, MonoClassField *field, int offset);
1473 mono_marshal_get_ldflda_wrapper (MonoType *type)
1475 MonoMethodSignature *sig;
1476 MonoMethodBuilder *mb;
1482 int t, pos0, pos1, pos2, pos3;
1484 type = mono_type_get_underlying_type (type);
1488 if (type->type == MONO_TYPE_SZARRAY) {
1489 klass = mono_defaults.array_class;
1490 } else if (type->type == MONO_TYPE_VALUETYPE) {
1491 klass = type->data.klass;
1492 } else if (t == MONO_TYPE_OBJECT || t == MONO_TYPE_CLASS || t == MONO_TYPE_STRING ||
1493 t == MONO_TYPE_CLASS) {
1494 klass = mono_defaults.object_class;
1495 } else if (t == MONO_TYPE_PTR || t == MONO_TYPE_FNPTR) {
1496 klass = mono_defaults.int_class;
1497 } else if (t == MONO_TYPE_GENERICINST) {
1498 if (mono_type_generic_inst_is_valuetype (type))
1499 klass = mono_class_from_mono_type (type);
1501 klass = mono_defaults.object_class;
1503 klass = mono_class_from_mono_type (type);
1506 klass = mono_defaults.int_class;
1509 cache = get_cache (&klass->image->ldflda_wrapper_cache, mono_aligned_addr_hash, NULL);
1510 if ((res = mono_marshal_find_in_cache (cache, klass)))
1513 /* we add the %p pointer value of klass because class names are not unique */
1514 name = g_strdup_printf ("__ldflda_wrapper_%p_%s.%s", klass, klass->name_space, klass->name);
1515 mb = mono_mb_new (mono_defaults.object_class, name, MONO_WRAPPER_LDFLDA);
1518 sig = mono_metadata_signature_alloc (mono_defaults.corlib, 4);
1519 sig->params [0] = &mono_defaults.object_class->byval_arg;
1520 sig->params [1] = &mono_defaults.int_class->byval_arg;
1521 sig->params [2] = &mono_defaults.int_class->byval_arg;
1522 sig->params [3] = &mono_defaults.int_class->byval_arg;
1523 sig->ret = &mono_defaults.int_class->byval_arg;
1526 /* if typeof (this) != transparent_proxy goto pos0 */
1527 mono_mb_emit_ldarg (mb, 0);
1528 pos0 = mono_mb_emit_proxy_check (mb, CEE_BNE_UN);
1530 /* if same_appdomain goto pos1 */
1531 mono_mb_emit_ldarg (mb, 0);
1532 pos1 = mono_mb_emit_xdomain_check (mb, CEE_BEQ);
1534 mono_mb_emit_exception_full (mb, "System", "InvalidOperationException", "Attempt to load field address from object in another appdomain.");
1536 /* same app domain */
1537 mono_mb_patch_branch (mb, pos1);
1539 /* if typeof (this) != contextbound goto pos2 */
1540 mono_mb_emit_ldarg (mb, 0);
1541 pos2 = mono_mb_emit_contextbound_check (mb, CEE_BEQ);
1543 /* if this->rp->context == mono_context_get goto pos3 */
1544 mono_mb_emit_ldarg (mb, 0);
1545 mono_mb_emit_ldflda (mb, MONO_STRUCT_OFFSET (MonoTransparentProxy, rp));
1546 mono_mb_emit_byte (mb, CEE_LDIND_REF);
1547 mono_mb_emit_ldflda (mb, MONO_STRUCT_OFFSET (MonoRealProxy, context));
1548 mono_mb_emit_byte (mb, CEE_LDIND_REF);
1549 mono_mb_emit_icall (mb, mono_context_get);
1550 pos3 = mono_mb_emit_branch (mb, CEE_BEQ);
1552 mono_mb_emit_exception_full (mb, "System", "InvalidOperationException", "Attempt to load field address from object in another context.");
1554 mono_mb_patch_branch (mb, pos2);
1555 mono_mb_patch_branch (mb, pos3);
1557 /* return the address of the field from this->rp->unwrapped_server */
1558 mono_mb_emit_ldarg (mb, 0);
1559 mono_mb_emit_ldflda (mb, MONO_STRUCT_OFFSET (MonoTransparentProxy, rp));
1560 mono_mb_emit_byte (mb, CEE_LDIND_REF);
1561 mono_mb_emit_ldflda (mb, MONO_STRUCT_OFFSET (MonoRealProxy, unwrapped_server));
1562 mono_mb_emit_byte (mb, CEE_LDIND_REF);
1563 mono_mb_emit_byte (mb, MONO_CUSTOM_PREFIX);
1564 mono_mb_emit_byte (mb, CEE_MONO_OBJADDR);
1565 mono_mb_emit_ldarg (mb, 3);
1566 mono_mb_emit_byte (mb, CEE_ADD);
1567 mono_mb_emit_byte (mb, CEE_RET);
1569 /* not a proxy: return the address of the field directly */
1570 mono_mb_patch_branch (mb, pos0);
1572 mono_mb_emit_ldarg (mb, 0);
1573 mono_mb_emit_byte (mb, MONO_CUSTOM_PREFIX);
1574 mono_mb_emit_byte (mb, CEE_MONO_OBJADDR);
1575 mono_mb_emit_ldarg (mb, 3);
1576 mono_mb_emit_byte (mb, CEE_ADD);
1578 mono_mb_emit_byte (mb, CEE_RET);
1581 info = mono_wrapper_info_create (mb, WRAPPER_SUBTYPE_NONE);
1582 info->d.proxy.klass = klass;
1583 res = mono_mb_create_and_cache_full (cache, klass,
1584 mb, sig, sig->param_count + 16,
1592 * mono_marshal_get_stfld_remote_wrapper:
1593 * klass: The type of the field
1595 * This function generates a wrapper for calling mono_store_remote_field_new
1596 * with the appropriate signature.
1597 * Similarly to mono_marshal_get_ldfld_remote_wrapper () this doesn't depend on the
1598 * klass argument anymore.
1601 mono_marshal_get_stfld_remote_wrapper (MonoClass *klass)
1603 MonoMethodSignature *sig, *csig;
1604 MonoMethodBuilder *mb;
1606 static MonoMethod *cached = NULL;
1608 mono_marshal_lock_internal ();
1610 mono_marshal_unlock_internal ();
1613 mono_marshal_unlock_internal ();
1615 mb = mono_mb_new_no_dup_name (mono_defaults.object_class, "__mono_store_remote_field_new_wrapper", MONO_WRAPPER_STFLD_REMOTE);
1617 mb->method->save_lmf = 1;
1619 sig = mono_metadata_signature_alloc (mono_defaults.corlib, 4);
1620 sig->params [0] = &mono_defaults.object_class->byval_arg;
1621 sig->params [1] = &mono_defaults.int_class->byval_arg;
1622 sig->params [2] = &mono_defaults.int_class->byval_arg;
1623 sig->params [3] = &mono_defaults.object_class->byval_arg;
1624 sig->ret = &mono_defaults.void_class->byval_arg;
1627 mono_mb_emit_ldarg (mb, 0);
1628 mono_mb_emit_ldarg (mb, 1);
1629 mono_mb_emit_ldarg (mb, 2);
1630 mono_mb_emit_ldarg (mb, 3);
1632 csig = mono_metadata_signature_alloc (mono_defaults.corlib, 4);
1633 csig->params [0] = &mono_defaults.object_class->byval_arg;
1634 csig->params [1] = &mono_defaults.int_class->byval_arg;
1635 csig->params [2] = &mono_defaults.int_class->byval_arg;
1636 csig->params [3] = &mono_defaults.object_class->byval_arg;
1637 csig->ret = &mono_defaults.void_class->byval_arg;
1640 mono_mb_emit_native_call (mb, csig, mono_store_remote_field_new);
1641 mono_marshal_emit_thread_interrupt_checkpoint (mb);
1643 mono_mb_emit_byte (mb, CEE_RET);
1646 mono_marshal_lock_internal ();
1648 mono_marshal_unlock_internal ();
1651 newm = mono_mb_create (mb, sig, 6, NULL);
1652 mono_marshal_lock_internal ();
1657 mono_marshal_unlock_internal ();
1659 mono_marshal_unlock_internal ();
1660 mono_free_method (newm);
1669 * mono_marshal_get_stfld_wrapper:
1670 * @type: the type of the field
1672 * This method generates a function which can be use to store a field with type
1673 * @type. The generated function has the following signature:
1674 * void stfld_wrapper (MonoObject *this, MonoClass *class, MonoClassField *field, int offset, <@type> val)
1677 mono_marshal_get_stfld_wrapper (MonoType *type)
1679 MonoMethodSignature *sig;
1680 MonoMethodBuilder *mb;
1688 type = mono_type_get_underlying_type (type);
1692 if (type->type == MONO_TYPE_SZARRAY) {
1693 klass = mono_defaults.array_class;
1694 } else if (type->type == MONO_TYPE_VALUETYPE) {
1695 klass = type->data.klass;
1696 } else if (t == MONO_TYPE_OBJECT || t == MONO_TYPE_CLASS || t == MONO_TYPE_STRING) {
1697 klass = mono_defaults.object_class;
1698 } else if (t == MONO_TYPE_PTR || t == MONO_TYPE_FNPTR) {
1699 klass = mono_defaults.int_class;
1700 } else if (t == MONO_TYPE_GENERICINST) {
1701 if (mono_type_generic_inst_is_valuetype (type))
1702 klass = mono_class_from_mono_type (type);
1704 klass = mono_defaults.object_class;
1706 klass = mono_class_from_mono_type (type);
1709 klass = mono_defaults.int_class;
1712 cache = get_cache (&klass->image->stfld_wrapper_cache, mono_aligned_addr_hash, NULL);
1713 if ((res = mono_marshal_find_in_cache (cache, klass)))
1716 /* we add the %p pointer value of klass because class names are not unique */
1717 name = g_strdup_printf ("__stfld_wrapper_%p_%s.%s", klass, klass->name_space, klass->name);
1718 mb = mono_mb_new (mono_defaults.object_class, name, MONO_WRAPPER_STFLD);
1721 sig = mono_metadata_signature_alloc (mono_defaults.corlib, 5);
1722 sig->params [0] = &mono_defaults.object_class->byval_arg;
1723 sig->params [1] = &mono_defaults.int_class->byval_arg;
1724 sig->params [2] = &mono_defaults.int_class->byval_arg;
1725 sig->params [3] = &mono_defaults.int_class->byval_arg;
1726 sig->params [4] = &klass->byval_arg;
1727 sig->ret = &mono_defaults.void_class->byval_arg;
1730 mono_mb_emit_ldarg (mb, 0);
1731 pos = mono_mb_emit_proxy_check (mb, CEE_BNE_UN);
1733 mono_mb_emit_ldarg (mb, 0);
1734 mono_mb_emit_ldarg (mb, 1);
1735 mono_mb_emit_ldarg (mb, 2);
1736 mono_mb_emit_ldarg (mb, 4);
1737 if (klass->valuetype)
1738 mono_mb_emit_op (mb, CEE_BOX, klass);
1740 mono_mb_emit_managed_call (mb, mono_marshal_get_stfld_remote_wrapper (klass), NULL);
1742 mono_mb_emit_byte (mb, CEE_RET);
1744 mono_mb_patch_branch (mb, pos);
1746 mono_mb_emit_ldarg (mb, 0);
1747 mono_mb_emit_byte (mb, MONO_CUSTOM_PREFIX);
1748 mono_mb_emit_byte (mb, CEE_MONO_OBJADDR);
1749 mono_mb_emit_ldarg (mb, 3);
1750 mono_mb_emit_byte (mb, CEE_ADD);
1751 mono_mb_emit_ldarg (mb, 4);
1756 case MONO_TYPE_BOOLEAN:
1757 case MONO_TYPE_CHAR:
1766 case MONO_TYPE_ARRAY:
1767 case MONO_TYPE_SZARRAY:
1768 case MONO_TYPE_OBJECT:
1769 case MONO_TYPE_CLASS:
1770 case MONO_TYPE_STRING:
1774 case MONO_TYPE_FNPTR:
1775 mono_mb_emit_byte (mb, mono_type_to_stind (type));
1777 case MONO_TYPE_VALUETYPE:
1778 g_assert (!klass->enumtype);
1779 mono_mb_emit_op (mb, CEE_STOBJ, klass);
1781 case MONO_TYPE_GENERICINST:
1783 case MONO_TYPE_MVAR:
1784 mono_mb_emit_op (mb, CEE_STOBJ, klass);
1787 g_warning ("type %x not implemented", type->type);
1788 g_assert_not_reached ();
1791 mono_mb_emit_byte (mb, CEE_RET);
1794 info = mono_wrapper_info_create (mb, WRAPPER_SUBTYPE_NONE);
1795 info->d.proxy.klass = klass;
1796 res = mono_mb_create_and_cache_full (cache, klass,
1797 mb, sig, sig->param_count + 16,
1805 mono_marshal_get_proxy_cancast (MonoClass *klass)
1807 static MonoMethodSignature *isint_sig = NULL;
1811 int pos_failed, pos_end;
1812 char *name, *klass_name;
1813 MonoMethod *can_cast_to;
1814 MonoMethodDesc *desc;
1815 MonoMethodBuilder *mb;
1817 cache = get_cache (&klass->image->proxy_isinst_cache, mono_aligned_addr_hash, NULL);
1818 if ((res = mono_marshal_find_in_cache (cache, klass)))
1822 isint_sig = mono_metadata_signature_alloc (mono_defaults.corlib, 1);
1823 isint_sig->params [0] = &mono_defaults.object_class->byval_arg;
1824 isint_sig->ret = &mono_defaults.object_class->byval_arg;
1825 isint_sig->pinvoke = 0;
1828 klass_name = mono_type_full_name (&klass->byval_arg);
1829 name = g_strdup_printf ("__proxy_isinst_wrapper_%s", klass_name);
1830 mb = mono_mb_new (mono_defaults.object_class, name, MONO_WRAPPER_PROXY_ISINST);
1831 g_free (klass_name);
1834 mb->method->save_lmf = 1;
1837 /* get the real proxy from the transparent proxy*/
1838 mono_mb_emit_ldarg (mb, 0);
1839 mono_mb_emit_ldflda (mb, MONO_STRUCT_OFFSET (MonoTransparentProxy, rp));
1840 mono_mb_emit_byte (mb, CEE_LDIND_REF);
1842 /* get the reflection type from the type handle */
1843 mono_mb_emit_ptr (mb, &klass->byval_arg);
1844 mono_mb_emit_icall (mb, type_from_handle);
1846 mono_mb_emit_ldarg (mb, 0);
1848 /* make the call to CanCastTo (type, ob) */
1849 desc = mono_method_desc_new ("IRemotingTypeInfo:CanCastTo", FALSE);
1850 can_cast_to = mono_method_desc_search_in_class (desc, mono_defaults.iremotingtypeinfo_class);
1851 g_assert (can_cast_to);
1852 mono_method_desc_free (desc);
1853 mono_mb_emit_op (mb, CEE_CALLVIRT, can_cast_to);
1855 pos_failed = mono_mb_emit_branch (mb, CEE_BRFALSE);
1857 /* Upgrade the proxy vtable by calling: mono_upgrade_remote_class_wrapper (type, ob)*/
1858 mono_mb_emit_ptr (mb, &klass->byval_arg);
1859 mono_mb_emit_icall (mb, type_from_handle);
1860 mono_mb_emit_ldarg (mb, 0);
1862 mono_mb_emit_icall (mb, mono_upgrade_remote_class_wrapper);
1863 mono_marshal_emit_thread_interrupt_checkpoint (mb);
1865 mono_mb_emit_ldarg (mb, 0);
1866 pos_end = mono_mb_emit_branch (mb, CEE_BR);
1870 mono_mb_patch_branch (mb, pos_failed);
1871 mono_mb_emit_byte (mb, CEE_LDNULL);
1875 mono_mb_patch_branch (mb, pos_end);
1876 mono_mb_emit_byte (mb, CEE_RET);
1879 info = mono_wrapper_info_create (mb, WRAPPER_SUBTYPE_NONE);
1880 info->d.proxy.klass = klass;
1881 res = mono_mb_create_and_cache_full (cache, klass, mb, isint_sig, isint_sig->param_count + 16, info, NULL);
1888 mono_upgrade_remote_class_wrapper (MonoReflectionType *rtype, MonoTransparentProxy *tproxy)
1891 MonoDomain *domain = ((MonoObject*)tproxy)->vtable->domain;
1892 klass = mono_class_from_mono_type (rtype->type);
1893 mono_upgrade_remote_class (domain, (MonoObject*)tproxy, klass);
1896 #else /* DISABLE_REMOTING */
1899 mono_remoting_init (void)
1903 #endif /* DISABLE_REMOTING */
1905 /* mono_get_xdomain_marshal_type()
1906 * Returns the kind of marshalling that a type needs for cross domain calls.
1908 static MonoXDomainMarshalType
1909 mono_get_xdomain_marshal_type (MonoType *t)
1912 case MONO_TYPE_VOID:
1913 g_assert_not_reached ();
1917 case MONO_TYPE_BOOLEAN:
1920 case MONO_TYPE_CHAR:
1927 return MONO_MARSHAL_NONE;
1928 case MONO_TYPE_STRING:
1929 return MONO_MARSHAL_COPY;
1930 case MONO_TYPE_ARRAY:
1931 case MONO_TYPE_SZARRAY: {
1932 MonoClass *elem_class = mono_class_from_mono_type (t)->element_class;
1933 if (mono_get_xdomain_marshal_type (&(elem_class->byval_arg)) != MONO_MARSHAL_SERIALIZE)
1934 return MONO_MARSHAL_COPY;
1939 return MONO_MARSHAL_SERIALIZE;
1942 /* mono_marshal_xdomain_copy_value
1943 * Makes a copy of "val" suitable for the current domain.
1946 mono_marshal_xdomain_copy_value (MonoObject *val)
1949 if (val == NULL) return NULL;
1951 domain = mono_domain_get ();
1953 switch (mono_object_class (val)->byval_arg.type) {
1954 case MONO_TYPE_VOID:
1955 g_assert_not_reached ();
1959 case MONO_TYPE_BOOLEAN:
1962 case MONO_TYPE_CHAR:
1968 case MONO_TYPE_R8: {
1969 return mono_value_box (domain, mono_object_class (val), ((char*)val) + sizeof(MonoObject));
1971 case MONO_TYPE_STRING: {
1972 MonoString *str = (MonoString *) val;
1973 return (MonoObject *) mono_string_new_utf16 (domain, mono_string_chars (str), mono_string_length (str));
1975 case MONO_TYPE_ARRAY:
1976 case MONO_TYPE_SZARRAY: {
1978 MonoXDomainMarshalType mt = mono_get_xdomain_marshal_type (&(mono_object_class (val)->element_class->byval_arg));
1979 if (mt == MONO_MARSHAL_SERIALIZE) return NULL;
1980 acopy = mono_array_clone_in_domain (domain, (MonoArray *) val);
1981 if (mt == MONO_MARSHAL_COPY) {
1982 int i, len = mono_array_length (acopy);
1983 for (i = 0; i < len; i++) {
1984 MonoObject *item = mono_array_get (acopy, gpointer, i);
1985 mono_array_setref (acopy, i, mono_marshal_xdomain_copy_value (item));
1988 return (MonoObject *) acopy;
1992 if (mono_object_class (val) == mono_defaults.stringbuilder_class) {
1993 MonoStringBuilder *oldsb = (MonoStringBuilder *) val;
1994 MonoStringBuilder *newsb = (MonoStringBuilder *) mono_object_new (domain, mono_defaults.stringbuilder_class);
1995 MONO_OBJECT_SETREF (newsb, str, mono_string_new_utf16 (domain, mono_string_chars (oldsb->str), mono_string_length (oldsb->str)));
1996 newsb->length = oldsb->length;
1997 newsb->max_capacity = (gint32)0x7fffffff;
1998 return (MonoObject *) newsb;