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/*
* exception.c: Exception handling
*
* Authors:
* Paolo Molaro (lupus@ximian.com)
* Dietmar Maurer (dietmar@ximian.com)
* Dick Porter (dick@ximian.com)
* Miguel de Icaza (miguel@ximian.com)
*
* Copyright 2001-2003 Ximian, Inc (http://www.ximian.com)
* Copyright 2004-2009 Novell, Inc (http://www.novell.com)
*/
#include <mono/metadata/exception.h>
#include <mono/metadata/object-internals.h>
#include <mono/metadata/metadata-internals.h>
#include <mono/metadata/appdomain.h>
#include <mono/metadata/mono-debug.h>
#include <string.h>
#ifdef HAVE_EXECINFO_H
#include <execinfo.h>
#endif
/**
* mono_exception_from_name:
* @image: the Mono image where to look for the class
* @name_space: the namespace for the class
* @name: class name
*
* Creates an exception of the given namespace/name class in the
* current domain.
*
* Returns: the initialized exception instance.
*/
MonoException *
mono_exception_from_name (MonoImage *image, const char *name_space,
const char *name)
{
return mono_exception_from_name_domain (mono_domain_get (), image, name_space, name);
}
/**
* mono_exception_from_name_domain:
* @domain: Domain where the return object will be created.
* @image: the Mono image where to look for the class
* @name_space: the namespace for the class
* @name: class name
*
* Creates an exception object of the given namespace/name class on
* the given domain.
*
* Returns: the initialized exception instance.
*/
MonoException *
mono_exception_from_name_domain (MonoDomain *domain, MonoImage *image,
const char* name_space, const char *name)
{
MonoClass *klass;
MonoObject *o;
MonoDomain *caller_domain = mono_domain_get ();
klass = mono_class_from_name (image, name_space, name);
o = mono_object_new (domain, klass);
g_assert (o != NULL);
if (domain != caller_domain)
mono_domain_set_internal (domain);
mono_runtime_object_init (o);
if (domain != caller_domain)
mono_domain_set_internal (caller_domain);
return (MonoException *)o;
}
/**
* mono_exception_from_token:
* @image: the Mono image where to look for the class
* @token: The type token of the class
*
* Creates an exception of the type given by @token.
*
* Returns: the initialized exception instance.
*/
MonoException *
mono_exception_from_token (MonoImage *image, guint32 token)
{
MonoError error;
MonoClass *klass;
MonoObject *o;
klass = mono_class_get_checked (image, token, &error);
g_assert (mono_error_ok (&error)); /* FIXME handle the error. */
o = mono_object_new (mono_domain_get (), klass);
g_assert (o != NULL);
mono_runtime_object_init (o);
return (MonoException *)o;
}
static MonoException *
create_exception_two_strings (MonoClass *klass, MonoString *a1, MonoString *a2)
{
MonoDomain *domain = mono_domain_get ();
MonoMethod *method = NULL;
MonoObject *o;
int count = 1;
gpointer args [2];
gpointer iter;
MonoMethod *m;
if (a2 != NULL)
count++;
o = mono_object_new (domain, klass);
iter = NULL;
while ((m = mono_class_get_methods (klass, &iter))) {
MonoMethodSignature *sig;
if (strcmp (".ctor", mono_method_get_name (m)))
continue;
sig = mono_method_signature (m);
if (sig->param_count != count)
continue;
if (sig->params [0]->type != MONO_TYPE_STRING)
continue;
if (count == 2 && sig->params [1]->type != MONO_TYPE_STRING)
continue;
method = m;
break;
}
args [0] = a1;
args [1] = a2;
mono_runtime_invoke (method, o, args, NULL);
return (MonoException *) o;
}
/**
* mono_exception_from_name_two_strings:
* @image: the Mono image where to look for the class
* @name_space: the namespace for the class
* @name: class name
* @a1: first string argument to pass
* @a2: second string argument to pass
*
* Creates an exception from a constructor that takes two string
* arguments.
*
* Returns: the initialized exception instance.
*/
MonoException *
mono_exception_from_name_two_strings (MonoImage *image, const char *name_space,
const char *name, MonoString *a1, MonoString *a2)
{
MonoClass *klass = mono_class_from_name (image, name_space, name);
return create_exception_two_strings (klass, a1, a2);
}
/**
* mono_exception_from_name_msg:
* @image: the Mono image where to look for the class
* @name_space: the namespace for the class
* @name: class name
* @msg: the message to embed inside the exception
*
* Creates an exception and initializes its message field.
*
* Returns: the initialized exception instance.
*/
MonoException *
mono_exception_from_name_msg (MonoImage *image, const char *name_space,
const char *name, const char *msg)
{
MonoException *ex;
ex = mono_exception_from_name (image, name_space, name);
if (msg)
MONO_OBJECT_SETREF (ex, message, mono_string_new (mono_object_get_domain ((MonoObject*)ex), msg));
return ex;
}
/**
* mono_exception_from_token_two_strings:
*
* Same as mono_exception_from_name_two_strings, but lookup the exception class using
* IMAGE and TOKEN.
*/
MonoException *
mono_exception_from_token_two_strings (MonoImage *image, guint32 token,
MonoString *a1, MonoString *a2)
{
MonoError error;
MonoClass *klass = mono_class_get_checked (image, token, &error);
g_assert (mono_error_ok (&error)); /* FIXME handle the error. */
return create_exception_two_strings (klass, a1, a2);
}
/**
* mono_get_exception_divide_by_zero:
*
* Returns: a new instance of the System.DivideByZeroException
*/
MonoException *
mono_get_exception_divide_by_zero ()
{
return mono_exception_from_name (mono_get_corlib (), "System",
"DivideByZeroException");
}
/**
* mono_get_exception_security:
*
* Returns: a new instance of the System.Security.SecurityException
*/
MonoException *
mono_get_exception_security ()
{
return mono_exception_from_name (mono_get_corlib (), "System.Security",
"SecurityException");
}
/**
* mono_get_exception_thread_abort:
*
* Returns: a new instance of the System.Threading.ThreadAbortException.
*/
MonoException *
mono_get_exception_thread_abort ()
{
return mono_exception_from_name (mono_get_corlib (), "System.Threading",
"ThreadAbortException");
}
/**
* mono_get_exception_thread_interrupted:
*
* Returns: a new instance of the System.Threading.ThreadInterruptedException.
*/
MonoException *
mono_get_exception_thread_interrupted ()
{
return mono_exception_from_name (mono_get_corlib (), "System.Threading",
"ThreadInterruptedException");
}
/**
* mono_get_exception_arithmetic:
*
* Returns: a new instance of the System.ArithmeticException.
*/
MonoException *
mono_get_exception_arithmetic ()
{
return mono_exception_from_name (mono_get_corlib (), "System",
"ArithmeticException");
}
/**
* mono_get_exception_overflow:
*
* Returns: a new instance of the System.OverflowException
*/
MonoException *
mono_get_exception_overflow ()
{
return mono_exception_from_name (mono_get_corlib (), "System",
"OverflowException");
}
/**
* mono_get_exception_null_reference:
*
* Returns: a new instance of the System.NullReferenceException
*/
MonoException *
mono_get_exception_null_reference ()
{
return mono_exception_from_name (mono_get_corlib (), "System",
"NullReferenceException");
}
/**
* mono_get_exception_execution_engine:
* @msg: the message to pass to the user
*
* Returns: a new instance of the System.ExecutionEngineException
*/
MonoException *
mono_get_exception_execution_engine (const char *msg)
{
return mono_exception_from_name_msg (mono_get_corlib (), "System", "ExecutionEngineException", msg);
}
/**
* mono_get_exception_serialization:
* @msg: the message to pass to the user
*
* Returns: a new instance of the System.Runtime.Serialization.SerializationException
*/
MonoException *
mono_get_exception_serialization (const char *msg)
{
return mono_exception_from_name_msg (mono_get_corlib (), "System.Runtime.Serialization", "SerializationException", msg);
}
/**
* mono_get_exception_invalid_cast:
*
* Returns: a new instance of the System.InvalidCastException
*/
MonoException *
mono_get_exception_invalid_cast ()
{
return mono_exception_from_name (mono_get_corlib (), "System", "InvalidCastException");
}
/**
* mono_get_exception_invalid_operation:
* @msg: the message to pass to the user
*
* Returns: a new instance of the System.InvalidOperationException
*/
MonoException *
mono_get_exception_invalid_operation (const char *msg)
{
return mono_exception_from_name_msg (mono_get_corlib (), "System",
"InvalidOperationException", msg);
}
/**
* mono_get_exception_index_out_of_range:
*
* Returns: a new instance of the System.IndexOutOfRangeException
*/
MonoException *
mono_get_exception_index_out_of_range ()
{
return mono_exception_from_name (mono_get_corlib (), "System",
"IndexOutOfRangeException");
}
/**
* mono_get_exception_array_type_mismatch:
*
* Returns: a new instance of the System.ArrayTypeMismatchException
*/
MonoException *
mono_get_exception_array_type_mismatch ()
{
return mono_exception_from_name (mono_get_corlib (), "System",
"ArrayTypeMismatchException");
}
/**
* mono_get_exception_type_load:
* @class_name: the name of the class that could not be loaded
* @assembly_name: the assembly where the class was looked up.
*
* Returns: a new instance of the System.TypeLoadException.
*/
MonoException *
mono_get_exception_type_load (MonoString *class_name, char *assembly_name)
{
MonoString *s = assembly_name ? mono_string_new (mono_domain_get (), assembly_name) : mono_string_new (mono_domain_get (), "");
return mono_exception_from_name_two_strings (mono_get_corlib (), "System",
"TypeLoadException", class_name, s);
}
/**
* mono_get_exception_not_implemented:
* @msg: the message to pass to the user
*
* Returns: a new instance of the System.NotImplementedException
*/
MonoException *
mono_get_exception_not_implemented (const char *msg)
{
return mono_exception_from_name_msg (mono_get_corlib (), "System", "NotImplementedException", msg);
}
/**
* mono_get_exception_not_supported:
* @msg: the message to pass to the user
*
* Returns: a new instance of the System.NotSupportedException
*/
MonoException *
mono_get_exception_not_supported (const char *msg)
{
return mono_exception_from_name_msg (mono_get_corlib (), "System", "NotSupportedException", msg);
}
/**
* mono_get_exception_missing_method:
* @class_name: the class where the lookup was performed.
* @member_name: the name of the missing method.
*
* Returns: a new instance of the System.MissingMethodException
*/
MonoException *
mono_get_exception_missing_method (const char *class_name, const char *member_name)
{
MonoString *s1 = mono_string_new (mono_domain_get (), class_name);
MonoString *s2 = mono_string_new (mono_domain_get (), member_name);
return mono_exception_from_name_two_strings (mono_get_corlib (), "System",
"MissingMethodException", s1, s2);
}
/**
* mono_get_exception_missing_field:
* @class_name: the class where the lookup was performed
* @member_name: the name of the missing method.
*
* Returns: a new instance of the System.MissingFieldException
*/
MonoException *
mono_get_exception_missing_field (const char *class_name, const char *member_name)
{
MonoString *s1 = mono_string_new (mono_domain_get (), class_name);
MonoString *s2 = mono_string_new (mono_domain_get (), member_name);
return mono_exception_from_name_two_strings (mono_get_corlib (), "System",
"MissingFieldException", s1, s2);
}
/**
* mono_get_exception_argument_null:
* @arg: the name of the argument that is null
*
* Returns: a new instance of the System.ArgumentNullException
*/
MonoException*
mono_get_exception_argument_null (const char *arg)
{
MonoException *ex;
ex = mono_exception_from_name (
mono_get_corlib (), "System", "ArgumentNullException");
if (arg) {
MonoArgumentException *argex = (MonoArgumentException *)ex;
MONO_OBJECT_SETREF (argex, param_name, mono_string_new (mono_object_get_domain ((MonoObject*)ex), arg));
}
return ex;
}
/**
* mono_get_exception_argument:
* @arg: the name of the invalid argument.
*
* Returns: a new instance of the System.ArgumentException
*/
MonoException *
mono_get_exception_argument (const char *arg, const char *msg)
{
MonoException *ex;
ex = mono_exception_from_name_msg (
mono_get_corlib (), "System", "ArgumentException", msg);
if (arg) {
MonoArgumentException *argex = (MonoArgumentException *)ex;
MONO_OBJECT_SETREF (argex, param_name, mono_string_new (mono_object_get_domain ((MonoObject*)ex), arg));
}
return ex;
}
/**
* mono_get_exception_argument_out_of_range:
* @arg: the name of the out of range argument.
*
* Returns: a new instance of the System.ArgumentOutOfRangeException
*/
MonoException *
mono_get_exception_argument_out_of_range (const char *arg)
{
MonoException *ex;
ex = mono_exception_from_name (
mono_get_corlib (), "System", "ArgumentOutOfRangeException");
if (arg) {
MonoArgumentException *argex = (MonoArgumentException *)ex;
MONO_OBJECT_SETREF (argex, param_name, mono_string_new (mono_object_get_domain ((MonoObject*)ex), arg));
}
return ex;
}
/**
* mono_get_exception_thread_state:
* @msg: the message to present to the user
*
* Returns: a new instance of the System.Threading.ThreadStateException
*/
MonoException *
mono_get_exception_thread_state (const char *msg)
{
return mono_exception_from_name_msg (
mono_get_corlib (), "System.Threading", "ThreadStateException", msg);
}
/**
* mono_get_exception_io:
* @msg: the message to present to the user
*
* Returns: a new instance of the System.IO.IOException
*/
MonoException *
mono_get_exception_io (const char *msg)
{
return mono_exception_from_name_msg (
mono_get_corlib (), "System.IO", "IOException", msg);
}
/**
* mono_get_exception_file_not_found:
* @fname: the name of the file not found.
*
* Returns: a new instance of the System.IO.FileNotFoundException
*/
MonoException *
mono_get_exception_file_not_found (MonoString *fname)
{
return mono_exception_from_name_two_strings (
mono_get_corlib (), "System.IO", "FileNotFoundException", fname, fname);
}
/**
* mono_get_exception_file_not_found2:
* @msg: an informative message for the user.
* @fname: the name of the file not found.
*
* Returns: a new instance of the System.IO.FileNotFoundException
*/
MonoException *
mono_get_exception_file_not_found2 (const char *msg, MonoString *fname)
{
MonoString *s = msg ? mono_string_new (mono_domain_get (), msg) : NULL;
return mono_exception_from_name_two_strings (
mono_get_corlib (), "System.IO", "FileNotFoundException", s, fname);
}
/**
* mono_get_exception_type_initialization:
* @type_name: the name of the type that failed to initialize.
* @inner: the inner exception.
*
* Returns: a new instance of the System.TypeInitializationException
*/
MonoException *
mono_get_exception_type_initialization (const gchar *type_name, MonoException *inner)
{
MonoClass *klass;
gpointer args [2];
MonoObject *exc;
MonoMethod *method;
gpointer iter;
klass = mono_class_from_name (mono_get_corlib (), "System", "TypeInitializationException");
g_assert (klass);
mono_class_init (klass);
iter = NULL;
while ((method = mono_class_get_methods (klass, &iter))) {
if (!strcmp (".ctor", mono_method_get_name (method))) {
MonoMethodSignature *sig = mono_method_signature (method);
if (sig->param_count == 2 && sig->params [0]->type == MONO_TYPE_STRING && mono_class_from_mono_type (sig->params [1]) == mono_defaults.exception_class)
break;
}
method = NULL;
}
g_assert (method);
args [0] = mono_string_new (mono_domain_get (), type_name);
args [1] = inner;
exc = mono_object_new (mono_domain_get (), klass);
mono_runtime_invoke (method, exc, args, NULL);
return (MonoException *) exc;
}
/**
* mono_get_exception_synchronization_lock:
* @inner: the inner exception.
*
* Returns: a new instance of the System.SynchronizationLockException
*/
MonoException *
mono_get_exception_synchronization_lock (const char *msg)
{
return mono_exception_from_name_msg (mono_get_corlib (), "System.Threading", "SynchronizationLockException", msg);
}
/**
* mono_get_exception_cannot_unload_appdomain:
* @inner: the inner exception.
*
* Returns: a new instance of the System.CannotUnloadAppDomainException
*/
MonoException *
mono_get_exception_cannot_unload_appdomain (const char *msg)
{
return mono_exception_from_name_msg (mono_get_corlib (), "System", "CannotUnloadAppDomainException", msg);
}
/**
* mono_get_exception_appdomain_unloaded
*
* Returns: a new instance of the System.AppDomainUnloadedException
*/
MonoException *
mono_get_exception_appdomain_unloaded (void)
{
return mono_exception_from_name (mono_get_corlib (), "System", "AppDomainUnloadedException");
}
/**
* mono_get_exception_bad_image_format:
* @msg: an informative message for the user.
*
* Returns: a new instance of the System.BadImageFormatException
*/
MonoException *
mono_get_exception_bad_image_format (const char *msg)
{
return mono_exception_from_name_msg (mono_get_corlib (), "System", "BadImageFormatException", msg);
}
/**
* mono_get_exception_bad_image_format2:
* @msg: an informative message for the user.
* @fname: The full name of the file with the invalid image.
*
* Returns: a new instance of the System.BadImageFormatException
*/
MonoException *
mono_get_exception_bad_image_format2 (const char *msg, MonoString *fname)
{
MonoString *s = msg ? mono_string_new (mono_domain_get (), msg) : NULL;
return mono_exception_from_name_two_strings (
mono_get_corlib (), "System", "BadImageFormatException", s, fname);
}
/**
* mono_get_exception_stack_overflow:
*
* Returns: a new instance of the System.StackOverflowException
*/
MonoException *
mono_get_exception_stack_overflow (void)
{
return mono_exception_from_name (mono_get_corlib (), "System", "StackOverflowException");
}
/**
* mono_get_exception_out_of_memory:
*
* Returns: a new instance of the System.OutOfMemoryException
*/
MonoException *
mono_get_exception_out_of_memory (void)
{
return mono_exception_from_name (mono_get_corlib (), "System", "OutOfMemoryException");
}
/**
* mono_get_exception_field_access:
*
* Returns: a new instance of the System.FieldAccessException
*/
MonoException *
mono_get_exception_field_access (void)
{
return mono_exception_from_name (mono_get_corlib (), "System", "FieldAccessException");
}
/**
* mono_get_exception_field_access2:
* @msg: an informative message for the user.
*
* Returns: a new instance of the System.FieldAccessException
*/
MonoException *
mono_get_exception_field_access_msg (const char *msg)
{
return mono_exception_from_name_msg (mono_get_corlib (), "System", "FieldAccessException", msg);
}
/**
* mono_get_exception_method_access:
*
* Returns: a new instance of the System.MethodAccessException
*/
MonoException *
mono_get_exception_method_access (void)
{
return mono_exception_from_name (mono_get_corlib (), "System", "MethodAccessException");
}
/**
* mono_get_exception_method_access2:
* @msg: an informative message for the user.
*
* Returns: a new instance of the System.MethodAccessException
*/
MonoException *
mono_get_exception_method_access_msg (const char *msg)
{
return mono_exception_from_name_msg (mono_get_corlib (), "System", "MethodAccessException", msg);
}
/**
* mono_get_exception_reflection_type_load:
* @types: an array of types that were defined in the moduled loaded.
* @exceptions: an array of exceptions that were thrown during the type loading.
*
* Returns: a new instance of the System.Reflection.ReflectionTypeLoadException
*/
MonoException *
mono_get_exception_reflection_type_load (MonoArray *types, MonoArray *exceptions)
{
MonoClass *klass;
gpointer args [2];
MonoObject *exc;
MonoMethod *method;
gpointer iter;
klass = mono_class_from_name (mono_get_corlib (), "System.Reflection", "ReflectionTypeLoadException");
g_assert (klass);
mono_class_init (klass);
/* Find the Type[], Exception[] ctor */
iter = NULL;
while ((method = mono_class_get_methods (klass, &iter))) {
if (!strcmp (".ctor", mono_method_get_name (method))) {
MonoMethodSignature *sig = mono_method_signature (method);
if (sig->param_count == 2 && sig->params [0]->type == MONO_TYPE_SZARRAY && sig->params [1]->type == MONO_TYPE_SZARRAY)
break;
}
method = NULL;
}
g_assert (method);
args [0] = types;
args [1] = exceptions;
exc = mono_object_new (mono_domain_get (), klass);
mono_runtime_invoke (method, exc, args, NULL);
return (MonoException *) exc;
}
MonoException *
mono_get_exception_runtime_wrapped (MonoObject *wrapped_exception)
{
MonoClass *klass;
MonoObject *o;
MonoMethod *method;
MonoDomain *domain = mono_domain_get ();
gpointer params [16];
klass = mono_class_from_name (mono_get_corlib (), "System.Runtime.CompilerServices", "RuntimeWrappedException");
g_assert (klass);
o = mono_object_new (domain, klass);
g_assert (o != NULL);
method = mono_class_get_method_from_name (klass, ".ctor", 1);
g_assert (method);
params [0] = wrapped_exception;
mono_runtime_invoke (method, o, params, NULL);
return (MonoException *)o;
}
static gboolean
append_frame_and_continue (MonoMethod *method, gpointer ip, size_t native_offset, gboolean managed, gpointer user_data)
{
MonoDomain *domain = mono_domain_get ();
GString *text = (GString*)user_data;
if (method) {
char *msg = mono_debug_print_stack_frame (method, native_offset, domain);
g_string_append_printf (text, "%s\n", msg);
g_free (msg);
} else {
g_string_append_printf (text, "<unknown native frame 0x%x>\n", ip);
}
return FALSE;
}
char *
mono_exception_get_managed_backtrace (MonoException *exc)
{
GString *text;
text = g_string_new_len (NULL, 20);
if (!mono_get_eh_callbacks ()->mono_exception_walk_trace (exc, append_frame_and_continue, text))
g_string_append (text, "managed backtrace not available\n");
return g_string_free (text, FALSE);
}
char *
mono_exception_get_native_backtrace (MonoException *exc)
{
#ifdef HAVE_BACKTRACE_SYMBOLS
MonoDomain *domain;
MonoArray *arr = exc->native_trace_ips;
int i, len;
GString *text;
char **messages;
if (!arr)
return g_strdup ("");
domain = mono_domain_get ();
len = mono_array_length (arr);
text = g_string_new_len (NULL, len * 20);
messages = backtrace_symbols (mono_array_addr (arr, gpointer, 0), len);
for (i = 0; i < len; ++i) {
gpointer ip = mono_array_get (arr, gpointer, i);
MonoJitInfo *ji = mono_jit_info_table_find (mono_domain_get (), ip);
if (ji) {
char *msg = mono_debug_print_stack_frame (mono_jit_info_get_method (ji), (char*)ip - (char*)ji->code_start, domain);
g_string_append_printf (text, "%s\n", msg);
g_free (msg);
} else {
g_string_append_printf (text, "%s\n", messages [i]);
}
}
free (messages);
return g_string_free (text, FALSE);
#else
return g_strdup ("");
#endif
}
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;
}
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