2 * mono-error.c: Error handling code
5 * Rodrigo Kumpera (rkumpera@novell.com)
6 * Copyright 2009 Novell, Inc (http://www.novell.com)
10 #include "mono-error.h"
11 #include "mono-error-internals.h"
13 #include <mono/metadata/exception.h>
14 #include <mono/metadata/object-internals.h>
15 #include <mono/metadata/debug-helpers.h>
17 #define mono_internal_error_get_message(E) ((E)->full_message ? (E)->full_message : (E)->message)
19 #define set_error_message() do { \
21 va_start (args, msg_format); \
22 if (g_vsnprintf (error->message, sizeof (error->message), msg_format, args) >= sizeof (error->message)) {\
23 if (!(error->full_message = g_strdup_vprintf (msg_format, args))) \
24 error->flags |= MONO_ERROR_INCOMPLETE; \
30 mono_error_prepare (MonoErrorInternal *error)
32 if (error->error_code != MONO_ERROR_NONE)
35 error->type_name = error->assembly_name = error->member_name = error->full_message = error->exception_name_space = error->exception_name = NULL;
37 error->message [0] = 0;
41 mono_error_init_flags (MonoError *oerror, unsigned short flags)
43 MonoErrorInternal *error = (MonoErrorInternal*)oerror;
44 g_assert (sizeof (MonoError) == sizeof (MonoErrorInternal));
46 error->error_code = MONO_ERROR_NONE;
51 mono_error_init (MonoError *error)
53 mono_error_init_flags (error, 0);
57 mono_error_cleanup (MonoError *oerror)
59 MonoErrorInternal *error = (MonoErrorInternal*)oerror;
60 if (error->error_code == MONO_ERROR_NONE)
63 g_free ((char*)error->full_message);
64 if (!(error->flags & MONO_ERROR_FREE_STRINGS)) //no memory was allocated
67 g_free ((char*)error->type_name);
68 g_free ((char*)error->assembly_name);
69 g_free ((char*)error->member_name);
70 g_free ((char*)error->exception_name_space);
71 g_free ((char*)error->exception_name);
75 mono_error_ok (MonoError *error)
77 return error->error_code == MONO_ERROR_NONE;
81 mono_error_get_error_code (MonoError *error)
83 return error->error_code;
86 /*Return a pointer to the internal error message, might be NULL.
87 Caller should not release it.*/
89 mono_error_get_message (MonoError *oerror)
91 MonoErrorInternal *error = (MonoErrorInternal*)oerror;
92 if (error->error_code == MONO_ERROR_NONE)
94 return mono_internal_error_get_message (error);
98 * Inform that this error has heap allocated strings.
99 * The strings will be duplicated if @dup_strings is TRUE
100 * otherwise they will just be free'd in mono_error_cleanup.
103 mono_error_dup_strings (MonoError *oerror, gboolean dup_strings)
105 #define DUP_STR(field) do { if (error->field) {\
106 if (!(error->field = g_strdup (error->field))) \
107 error->flags |= MONO_ERROR_INCOMPLETE; \
110 MonoErrorInternal *error = (MonoErrorInternal*)oerror;
111 error->flags |= MONO_ERROR_FREE_STRINGS;
115 DUP_STR (assembly_name);
116 DUP_STR (member_name);
117 DUP_STR (exception_name_space);
118 DUP_STR (exception_name);
124 mono_error_set_error (MonoError *oerror, int error_code, const char *msg_format, ...)
126 MonoErrorInternal *error = (MonoErrorInternal*)oerror;
127 mono_error_prepare (error);
129 error->error_code = error_code;
130 set_error_message ();
134 mono_error_set_assembly_name (MonoError *oerror, const char *assembly_name)
136 MonoErrorInternal *error = (MonoErrorInternal*)oerror;
137 g_assert (error->error_code != MONO_ERROR_NONE);
139 error->assembly_name = assembly_name;
143 mono_error_set_member_name (MonoError *oerror, const char *member_name)
145 MonoErrorInternal *error = (MonoErrorInternal*)oerror;
147 error->member_name = member_name;
151 mono_error_set_type_name (MonoError *oerror, const char *type_name)
153 MonoErrorInternal *error = (MonoErrorInternal*)oerror;
155 error->type_name = type_name;
159 mono_error_set_class (MonoError *oerror, MonoClass *klass)
161 MonoErrorInternal *error = (MonoErrorInternal*)oerror;
163 error->klass = klass;
167 mono_error_set_corlib_exception (MonoError *oerror, const char *name_space, const char *name)
169 MonoErrorInternal *error = (MonoErrorInternal*)oerror;
171 error->exception_name_space = name_space;
172 error->exception_name = name;
177 mono_error_set_assembly_load (MonoError *oerror, const char *assembly_name, const char *msg_format, ...)
179 MonoErrorInternal *error = (MonoErrorInternal*)oerror;
180 mono_error_prepare (error);
182 error->error_code = MONO_ERROR_FILE_NOT_FOUND;
183 mono_error_set_assembly_name (oerror, assembly_name);
185 set_error_message ();
189 mono_error_set_type_load_class (MonoError *oerror, MonoClass *klass, const char *msg_format, ...)
191 MonoErrorInternal *error = (MonoErrorInternal*)oerror;
192 mono_error_prepare (error);
194 error->error_code = MONO_ERROR_TYPE_LOAD;
195 mono_error_set_class (oerror, klass);
196 set_error_message ();
200 mono_error_set_type_load_name (MonoError *oerror, const char *type_name, const char *assembly_name, const char *msg_format, ...)
202 MonoErrorInternal *error = (MonoErrorInternal*)oerror;
203 mono_error_prepare (error);
205 error->error_code = MONO_ERROR_TYPE_LOAD;
206 mono_error_set_type_name (oerror, type_name);
207 mono_error_set_assembly_name (oerror, assembly_name);
208 set_error_message ();
212 mono_error_set_method_load (MonoError *oerror, MonoClass *klass, const char *method_name, const char *msg_format, ...)
214 MonoErrorInternal *error = (MonoErrorInternal*)oerror;
215 mono_error_prepare (error);
217 error->error_code = MONO_ERROR_MISSING_METHOD;
218 mono_error_set_class (oerror, klass);
219 mono_error_set_member_name (oerror, method_name);
220 set_error_message ();
224 mono_error_set_field_load (MonoError *oerror, MonoClass *klass, const char *field_name, const char *msg_format, ...)
226 MonoErrorInternal *error = (MonoErrorInternal*)oerror;
227 mono_error_prepare (error);
229 error->error_code = MONO_ERROR_MISSING_FIELD;
230 mono_error_set_class (oerror, klass);
231 mono_error_set_member_name (oerror, field_name);
232 set_error_message ();
236 mono_error_set_bad_image (MonoError *oerror, const char *assembly_name, const char *msg_format, ...)
238 MonoErrorInternal *error = (MonoErrorInternal*)oerror;
239 mono_error_prepare (error);
241 error->error_code = MONO_ERROR_BAD_IMAGE;
242 mono_error_set_assembly_name (oerror, assembly_name);
243 set_error_message ();
247 mono_error_set_generic_error (MonoError *oerror, const char * name_space, const char *name, const char *msg_format, ...)
249 MonoErrorInternal *error = (MonoErrorInternal*)oerror;
250 mono_error_prepare (error);
252 error->error_code = MONO_ERROR_GENERIC;
253 mono_error_set_corlib_exception (oerror, name_space, name);
254 set_error_message ();
258 mono_error_set_out_of_memory (MonoError *oerror, const char *msg_format, ...)
260 MonoErrorInternal *error = (MonoErrorInternal*)oerror;
262 mono_error_prepare (error);
264 error->error_code = MONO_ERROR_OUT_OF_MEMORY;
265 va_start (args, msg_format);
266 g_vsnprintf (error->message, sizeof (error->message), msg_format, args);
271 mono_error_set_argument (MonoError *oerror, const char *argument, const char *msg_format, ...)
273 MonoErrorInternal *error = (MonoErrorInternal*)oerror;
274 mono_error_prepare (error);
276 error->error_code = MONO_ERROR_ARGUMENT;
277 error->type_name = argument; /*use the first available string slot*/
279 set_error_message ();
283 get_type_name_as_mono_string (MonoErrorInternal *error, MonoDomain *domain, MonoError *error_out)
285 MonoString* res = NULL;
287 if (error->type_name) {
288 res = mono_string_new (domain, error->type_name);
290 } else if (error->klass) {
291 char *name = mono_type_full_name (&error->klass->byval_arg);
293 res = mono_string_new (domain, name);
298 mono_error_set_out_of_memory (error_out, "Could not allocate type name");
303 set_message_on_exception (MonoException *exception, MonoErrorInternal *error, MonoError *error_out)
305 MonoString *msg = mono_string_new (mono_domain_get (), mono_internal_error_get_message (error));
307 MONO_OBJECT_SETREF (exception, message, msg);
309 mono_error_set_out_of_memory (error_out, "Could not allocate exception object");
312 /*Can fail with out-of-memory*/
314 mono_error_prepare_exception (MonoError *oerror, MonoError *error_out)
316 MonoErrorInternal *error = (MonoErrorInternal*)oerror;
318 MonoException* exception = NULL;
319 MonoString *assembly_name = NULL, *type_name = NULL, *method_name = NULL, *field_name = NULL, *msg = NULL;
320 MonoDomain *domain = mono_domain_get ();
322 mono_error_init (error_out);
324 switch (error->error_code) {
325 case MONO_ERROR_NONE:
328 case MONO_ERROR_MISSING_METHOD:
329 if ((error->type_name || error->klass) && error->member_name) {
330 type_name = get_type_name_as_mono_string (error, domain, error_out);
331 if (!mono_error_ok (error_out))
334 method_name = mono_string_new (domain, error->member_name);
336 mono_error_set_out_of_memory (error_out, "Could not allocate method name");
340 exception = mono_exception_from_name_two_strings (mono_defaults.corlib, "System", "MissingMethodException", type_name, method_name);
342 set_message_on_exception (exception, error, error_out);
344 exception = mono_exception_from_name_msg (mono_defaults.corlib, "System", "MissingMethodException", mono_internal_error_get_message (error));
348 case MONO_ERROR_MISSING_FIELD:
349 if ((error->type_name || error->klass) && error->member_name) {
350 type_name = get_type_name_as_mono_string (error, domain, error_out);
351 if (!mono_error_ok (error_out))
354 field_name = mono_string_new (domain, error->member_name);
356 mono_error_set_out_of_memory (error_out, "Could not allocate field name");
360 exception = mono_exception_from_name_two_strings (mono_defaults.corlib, "System", "MissingFieldException", type_name, field_name);
362 set_message_on_exception (exception, error, error_out);
364 exception = mono_exception_from_name_msg (mono_defaults.corlib, "System", "MissingFieldException", mono_internal_error_get_message (error));
368 case MONO_ERROR_TYPE_LOAD:
369 if (error->type_name || error->assembly_name) {
370 type_name = get_type_name_as_mono_string (error, domain, error_out);
371 if (!mono_error_ok (error_out))
374 if (error->assembly_name) {
375 assembly_name = mono_string_new (domain, error->assembly_name);
376 if (!assembly_name) {
377 mono_error_set_out_of_memory (error_out, "Could not allocate assembly name");
382 exception = mono_exception_from_name_two_strings (mono_get_corlib (), "System", "TypeLoadException", type_name, assembly_name);
384 set_message_on_exception (exception, error, error_out);
386 exception = mono_exception_from_name_msg (mono_defaults.corlib, "System", "TypeLoadException", mono_internal_error_get_message (error));
390 case MONO_ERROR_FILE_NOT_FOUND:
391 case MONO_ERROR_BAD_IMAGE:
392 if (error->assembly_name) {
393 msg = mono_string_new (domain, mono_internal_error_get_message (error));
395 mono_error_set_out_of_memory (error_out, "Could not allocate message");
399 if (error->assembly_name) {
400 assembly_name = mono_string_new (domain, error->assembly_name);
401 if (!assembly_name) {
402 mono_error_set_out_of_memory (error_out, "Could not allocate assembly name");
407 if (error->error_code == MONO_ERROR_FILE_NOT_FOUND)
408 exception = mono_exception_from_name_two_strings (mono_get_corlib (), "System.IO", "FileNotFoundException", msg, assembly_name);
410 exception = mono_exception_from_name_two_strings (mono_defaults.corlib, "System", "BadImageFormatException", msg, assembly_name);
412 if (error->error_code == MONO_ERROR_FILE_NOT_FOUND)
413 exception = mono_exception_from_name_msg (mono_get_corlib (), "System.IO", "FileNotFoundException", mono_internal_error_get_message (error));
415 exception = mono_exception_from_name_msg (mono_defaults.corlib, "System", "BadImageFormatException", mono_internal_error_get_message (error));
419 case MONO_ERROR_OUT_OF_MEMORY:
420 exception = mono_get_exception_out_of_memory ();
423 case MONO_ERROR_ARGUMENT:
424 exception = mono_get_exception_argument (error->type_name, mono_internal_error_get_message (error));
427 case MONO_ERROR_GENERIC:
428 if (!error->exception_name_space || !error->exception_name)
429 mono_error_set_generic_error (error_out, "System", "ExecutionEngineException", "MonoError with generic error but no exception name was supplied");
431 exception = mono_exception_from_name_msg (mono_defaults.corlib, error->exception_name_space, error->exception_name, mono_internal_error_get_message (error));
435 mono_error_set_generic_error (error_out, "System", "ExecutionEngineException", "Invalid error-code %d", error->error_code);
438 if (!mono_error_ok (error_out))
441 mono_error_set_out_of_memory (error_out, "Could not allocate exception object");
446 Raises the exception of @error.
447 Does nothing if @error has a success error code.
448 Aborts in case of a double fault. This happens when it can't recover from an error caused by trying
449 to construct the first exception object.
450 The error object @error is cleaned up.
453 mono_error_raise_exception (MonoError *target_error)
458 if (mono_error_ok (target_error))
461 ex = mono_error_prepare_exception (target_error, &error);
462 if (!mono_error_ok (&error)) {
463 MonoError second_chance;
464 /*Try to produce the exception for the second error. FIXME maybe we should log about the original one*/
465 ex = mono_error_prepare_exception (&error, &second_chance);
467 g_assert (mono_error_ok (&second_chance)); /*We can't reasonable handle double faults, maybe later.*/
468 mono_error_cleanup (&error);
470 mono_error_cleanup (target_error);
472 mono_raise_exception (ex);