* Patrik Torstensson (patrik.torstensson@labs2.com)
*
* (C) 2001 Ximian, Inc.
+ * Copyright (C) 2002-2006 Novell, Inc.
*
* This file is used by the interpreter and the JIT engine to locate
* assemblies. Used to load AssemblyRef and later to resolve various
*/
#include <config.h>
#include <glib.h>
-#include <gmodule.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <mono/metadata/image.h>
#include <mono/metadata/assembly.h>
#include <mono/metadata/tokentype.h>
-#include <mono/metadata/cil-coff.h>
#include <mono/metadata/tabledefs.h>
#include <mono/metadata/metadata-internals.h>
#include <mono/metadata/loader.h>
#include <mono/metadata/class-internals.h>
#include <mono/metadata/debug-helpers.h>
#include <mono/metadata/reflection.h>
+#include <mono/metadata/profiler.h>
+#include <mono/metadata/profiler-private.h>
+#include <mono/metadata/exception.h>
#include <mono/utils/mono-logger.h>
+#include <mono/utils/mono-dl.h>
+#include <mono/utils/mono-membar.h>
MonoDefaults mono_defaults;
*/
static CRITICAL_SECTION loader_mutex;
+
+/*
+ * This TLS variable contains the last type load error encountered by the loader.
+ */
+guint32 loader_error_thread_id;
+
void
mono_loader_init ()
{
InitializeCriticalSection (&loader_mutex);
+
+ loader_error_thread_id = TlsAlloc ();
+}
+
+void
+mono_loader_cleanup (void)
+{
+ TlsFree (loader_error_thread_id);
+
+ /*DeleteCriticalSection (&loader_mutex);*/
+}
+
+/*
+ * Handling of type load errors should be done as follows:
+ *
+ * If something could not be loaded, the loader should call one of the
+ * mono_loader_set_error_XXX functions ()
+ * with the appropriate arguments, then return NULL to report the failure. The error
+ * should be propagated until it reaches code which can throw managed exceptions. At that
+ * point, an exception should be thrown based on the information returned by
+ * mono_loader_get_last_error (). Then the error should be cleared by calling
+ * mono_loader_clear_error ().
+ */
+
+static void
+set_loader_error (MonoLoaderError *error)
+{
+ TlsSetValue (loader_error_thread_id, error);
+}
+
+/**
+ * mono_loader_set_error_assembly_load:
+ *
+ * Set the loader error for this thread.
+ */
+void
+mono_loader_set_error_assembly_load (const char *assembly_name, gboolean ref_only)
+{
+ MonoLoaderError *error;
+
+ if (mono_loader_get_last_error ())
+ return;
+
+ error = g_new0 (MonoLoaderError, 1);
+ error->exception_type = MONO_EXCEPTION_FILE_NOT_FOUND;
+ error->assembly_name = g_strdup (assembly_name);
+ error->ref_only = ref_only;
+
+ /*
+ * This is not strictly needed, but some (most) of the loader code still
+ * can't deal with load errors, and this message is more helpful than an
+ * assert.
+ */
+ if (ref_only)
+ g_warning ("Cannot resolve dependency to assembly '%s' because it has not been preloaded. When using the ReflectionOnly APIs, dependent assemblies must be pre-loaded or loaded on demand through the ReflectionOnlyAssemblyResolve event.", assembly_name);
+ else
+ g_warning ("Could not load file or assembly '%s' or one of its dependencies.", assembly_name);
+
+ set_loader_error (error);
+}
+
+/**
+ * mono_loader_set_error_type_load:
+ *
+ * Set the loader error for this thread.
+ */
+void
+mono_loader_set_error_type_load (const char *class_name, const char *assembly_name)
+{
+ MonoLoaderError *error;
+
+ if (mono_loader_get_last_error ())
+ return;
+
+ error = g_new0 (MonoLoaderError, 1);
+ error->exception_type = MONO_EXCEPTION_TYPE_LOAD;
+ error->class_name = g_strdup (class_name);
+ error->assembly_name = g_strdup (assembly_name);
+
+ /*
+ * This is not strictly needed, but some (most) of the loader code still
+ * can't deal with load errors, and this message is more helpful than an
+ * assert.
+ */
+ g_warning ("The class %s could not be loaded, used in %s", class_name, assembly_name);
+
+ set_loader_error (error);
+}
+
+/*
+ * mono_loader_set_error_method_load:
+ *
+ * Set the loader error for this thread. MEMBER_NAME should point to a string
+ * inside metadata.
+ */
+void
+mono_loader_set_error_method_load (const char *class_name, const char *member_name)
+{
+ MonoLoaderError *error;
+
+ /* FIXME: Store the signature as well */
+ if (mono_loader_get_last_error ())
+ return;
+
+ error = g_new0 (MonoLoaderError, 1);
+ error->exception_type = MONO_EXCEPTION_MISSING_METHOD;
+ error->class_name = g_strdup (class_name);
+ error->member_name = member_name;
+
+ set_loader_error (error);
+}
+
+/*
+ * mono_loader_set_error_field_load:
+ *
+ * Set the loader error for this thread. MEMBER_NAME should point to a string
+ * inside metadata.
+ */
+void
+mono_loader_set_error_field_load (MonoClass *klass, const char *member_name)
+{
+ MonoLoaderError *error;
+
+ /* FIXME: Store the signature as well */
+ if (mono_loader_get_last_error ())
+ return;
+
+ error = g_new0 (MonoLoaderError, 1);
+ error->exception_type = MONO_EXCEPTION_MISSING_FIELD;
+ error->klass = klass;
+ error->member_name = member_name;
+
+ set_loader_error (error);
+}
+
+/*
+ * mono_loader_set_error_bad_image:
+ *
+ * Set the loader error for this thread.
+ */
+void
+mono_loader_set_error_bad_image (char *msg)
+{
+ MonoLoaderError *error;
+
+ if (mono_loader_get_last_error ())
+ return;
+
+ error = g_new0 (MonoLoaderError, 1);
+ error->exception_type = MONO_EXCEPTION_BAD_IMAGE;
+ error->msg = msg;
+
+ set_loader_error (error);
+}
+
+
+/*
+ * mono_loader_get_last_error:
+ *
+ * Returns information about the last type load exception encountered by the loader, or
+ * NULL. After use, the exception should be cleared by calling mono_loader_clear_error.
+ */
+MonoLoaderError*
+mono_loader_get_last_error (void)
+{
+ return (MonoLoaderError*)TlsGetValue (loader_error_thread_id);
+}
+
+/**
+ * mono_loader_clear_error:
+ *
+ * Disposes any loader error messages on this thread
+ */
+void
+mono_loader_clear_error (void)
+{
+ MonoLoaderError *ex = (MonoLoaderError*)TlsGetValue (loader_error_thread_id);
+
+ if (ex) {
+ g_free (ex->class_name);
+ g_free (ex->assembly_name);
+ g_free (ex->msg);
+ g_free (ex);
+
+ TlsSetValue (loader_error_thread_id, NULL);
+ }
+}
+
+/**
+ * mono_loader_error_prepare_exception:
+ * @error: The MonoLoaderError to turn into an exception
+ *
+ * This turns a MonoLoaderError into an exception that can be thrown
+ * and resets the Mono Loader Error state during this process.
+ *
+ */
+MonoException *
+mono_loader_error_prepare_exception (MonoLoaderError *error)
+{
+ MonoException *ex = NULL;
+
+ switch (error->exception_type) {
+ case MONO_EXCEPTION_TYPE_LOAD: {
+ char *cname = g_strdup (error->class_name);
+ char *aname = g_strdup (error->assembly_name);
+ MonoString *class_name;
+
+ mono_loader_clear_error ();
+
+ class_name = mono_string_new (mono_domain_get (), cname);
+
+ ex = mono_get_exception_type_load (class_name, aname);
+ g_free (cname);
+ g_free (aname);
+ break;
+ }
+ case MONO_EXCEPTION_MISSING_METHOD: {
+ char *cname = g_strdup (error->class_name);
+ char *aname = g_strdup (error->member_name);
+
+ mono_loader_clear_error ();
+ ex = mono_get_exception_missing_method (cname, aname);
+ g_free (cname);
+ g_free (aname);
+ break;
+ }
+
+ case MONO_EXCEPTION_MISSING_FIELD: {
+ char *cnspace = g_strdup (*error->klass->name_space ? error->klass->name_space : "");
+ char *cname = g_strdup (error->klass->name);
+ char *cmembername = g_strdup (error->member_name);
+ char *class_name;
+
+ mono_loader_clear_error ();
+ class_name = g_strdup_printf ("%s%s%s", cnspace, cnspace ? "." : "", cname);
+
+ ex = mono_get_exception_missing_field (class_name, cmembername);
+ g_free (class_name);
+ g_free (cname);
+ g_free (cmembername);
+ g_free (cnspace);
+ break;
+ }
+
+ case MONO_EXCEPTION_FILE_NOT_FOUND: {
+ char *msg;
+ char *filename;
+
+ if (error->ref_only)
+ msg = g_strdup_printf ("Cannot resolve dependency to assembly '%s' because it has not been preloaded. When using the ReflectionOnly APIs, dependent assemblies must be pre-loaded or loaded on demand through the ReflectionOnlyAssemblyResolve event.", error->assembly_name);
+ else
+ msg = g_strdup_printf ("Could not load file or assembly '%s' or one of its dependencies.", error->assembly_name);
+ filename = g_strdup (error->assembly_name);
+ /* Has to call this before calling anything which might call mono_class_init () */
+ mono_loader_clear_error ();
+ ex = mono_get_exception_file_not_found2 (msg, mono_string_new (mono_domain_get (), filename));
+ g_free (msg);
+ g_free (filename);
+ break;
+ }
+
+ case MONO_EXCEPTION_BAD_IMAGE: {
+ char *msg = g_strdup (error->msg);
+ mono_loader_clear_error ();
+ ex = mono_get_exception_bad_image_format (msg);
+ g_free (msg);
+ break;
+ }
+
+ default:
+ g_assert_not_reached ();
+ }
+
+ return ex;
+}
+
+/*
+ * If @field belongs to an inflated generic class, return the corresponding field of the
+ * generic type definition class.
+ */
+static MonoClassField*
+mono_metadata_get_corresponding_field_from_generic_type_definition (MonoClassField *field)
+{
+ MonoClass *gtd;
+ int offset;
+
+ if (!field->parent->generic_class)
+ return field;
+
+ gtd = field->parent->generic_class->container_class;
+ offset = field - field->parent->fields;
+ return gtd->fields + offset;
}
static MonoClassField*
MonoGenericContext *context)
{
MonoClass *klass;
+ MonoClassField *field, *sig_field = NULL;
MonoTableInfo *tables = image->tables;
+ MonoType *sig_type;
guint32 cols[6];
guint32 nindex, class;
const char *fname;
const char *ptr;
guint32 idx = mono_metadata_token_index (token);
- if (image->dynamic) {
- MonoClassField *result = mono_lookup_dynamic_token (image, token);
- *retklass = result->parent;
- return result;
- }
-
mono_metadata_decode_row (&tables [MONO_TABLE_MEMBERREF], idx-1, cols, MONO_MEMBERREF_SIZE);
nindex = cols [MONO_MEMBERREF_CLASS] >> MONO_MEMBERREF_PARENT_BITS;
class = cols [MONO_MEMBERREF_CLASS] & MONO_MEMBERREF_PARENT_MASK;
fname = mono_metadata_string_heap (image, cols [MONO_MEMBERREF_NAME]);
-
+
ptr = mono_metadata_blob_heap (image, cols [MONO_MEMBERREF_SIGNATURE]);
mono_metadata_decode_blob_size (ptr, &ptr);
/* we may want to check the signature here... */
+ if (*ptr++ != 0x6) {
+ mono_loader_set_error_bad_image (g_strdup_printf ("Bad field signature class token %08x field name %s token %08x", class, fname, token));
+ return NULL;
+ }
+ sig_type = mono_metadata_parse_type (image, MONO_PARSE_TYPE, 0, ptr, &ptr);
+
switch (class) {
+ case MONO_MEMBERREF_PARENT_TYPEDEF:
+ klass = mono_class_get (image, MONO_TOKEN_TYPE_DEF | nindex);
+ if (!klass) {
+ char *name = mono_class_name_from_token (image, MONO_TOKEN_TYPE_DEF | nindex);
+ g_warning ("Missing field %s in class %s (typedef index %d)", fname, name, nindex);
+ mono_loader_set_error_type_load (name, image->assembly_name);
+ g_free (name);
+ return NULL;
+ }
+ mono_class_init (klass);
+ if (retklass)
+ *retklass = klass;
+ sig_field = field = mono_class_get_field_from_name (klass, fname);
+ break;
case MONO_MEMBERREF_PARENT_TYPEREF:
klass = mono_class_from_typeref (image, MONO_TOKEN_TYPE_REF | nindex);
if (!klass) {
- char *name = mono_class_name_from_token (image, MONO_TOKEN_TYPE_REF | nindex, context);
- g_warning ("Missing field %s in class %s (typeref index %d)", fname, name, nindex);
+ char *name = mono_class_name_from_token (image, MONO_TOKEN_TYPE_REF | nindex);
+ g_warning ("missing field %s in class %s (typeref index %d)", fname, name, nindex);
+ mono_loader_set_error_type_load (name, image->assembly_name);
g_free (name);
return NULL;
}
mono_class_init (klass);
if (retklass)
*retklass = klass;
- return mono_class_get_field_from_name (klass, fname);
+ sig_field = field = mono_class_get_field_from_name (klass, fname);
+ break;
case MONO_MEMBERREF_PARENT_TYPESPEC: {
- /*guint32 bcols [MONO_TYPESPEC_SIZE];
- guint32 len;
- MonoType *type;
-
- mono_metadata_decode_row (&tables [MONO_TABLE_TYPESPEC], nindex - 1,
- bcols, MONO_TYPESPEC_SIZE);
- ptr = mono_metadata_blob_heap (image, bcols [MONO_TYPESPEC_SIGNATURE]);
- len = mono_metadata_decode_value (ptr, &ptr);
- type = mono_metadata_parse_type (image, MONO_PARSE_TYPE, 0, ptr, &ptr);
-
- klass = mono_class_from_mono_type (type);
- mono_class_init (klass);
- g_print ("type in sig: %s\n", klass->name);*/
klass = mono_class_get_full (image, MONO_TOKEN_TYPE_SPEC | nindex, context);
+ //FIXME can't klass be null?
mono_class_init (klass);
if (retklass)
*retklass = klass;
- return mono_class_get_field_from_name (klass, fname);
+ field = mono_class_get_field_from_name (klass, fname);
+ sig_field = mono_metadata_get_corresponding_field_from_generic_type_definition (field);
+ break;
}
default:
g_warning ("field load from %x", class);
return NULL;
}
+
+ if (!field)
+ mono_loader_set_error_field_load (klass, fname);
+ else if (sig_field && !mono_metadata_type_equal_full (sig_type, sig_field->type, TRUE)) {
+ mono_loader_set_error_field_load (klass, fname);
+ return NULL;
+ }
+
+ return field;
}
MonoClassField*
MonoClassField *field;
if (image->dynamic) {
- MonoClassField *result = mono_lookup_dynamic_token (image, token);
+ MonoClassField *result;
+ MonoClass *handle_class;
+
+ *retklass = NULL;
+ result = mono_lookup_dynamic_token_class (image, token, TRUE, &handle_class, context);
+ // This checks the memberref type as well
+ if (result && handle_class != mono_defaults.fieldhandle_class) {
+ mono_loader_set_error_bad_image (g_strdup ("Bad field token."));
+ return NULL;
+ }
*retklass = result->parent;
return result;
}
if (!type)
return NULL;
k = mono_class_get (image, MONO_TOKEN_TYPE_DEF | type);
- mono_class_init (k);
if (!k)
return NULL;
+ mono_class_init (k);
if (retklass)
*retklass = k;
field = mono_class_get_field (k, token);
}
mono_loader_lock ();
- if (!field->parent->generic_class)
+ if (field && !field->parent->generic_class && !field->parent->generic_container)
g_hash_table_insert (image->field_cache, GUINT_TO_POINTER (token), field);
mono_loader_unlock ();
return field;
for (i = 0; i < sig1->sentinelpos; i++) {
MonoType *p1 = sig1->params[i];
MonoType *p2 = sig2->params[i];
-
+
/*if (p1->attrs != p2->attrs)
return FALSE;
*/
}
static MonoMethod *
-find_method (MonoClass *klass, MonoClass *ic, const char* name, MonoMethodSignature *sig)
+find_method_in_class (MonoClass *in_class, const char *name, const char *qname, const char *fqname,
+ MonoMethodSignature *sig, MonoClass *from_class)
{
int i;
- char *qname, *fqname;
+
+ mono_class_setup_methods (in_class);
+ for (i = 0; i < in_class->method.count; ++i) {
+ MonoMethod *m = in_class->methods [i];
+
+ if (!((fqname && !strcmp (m->name, fqname)) ||
+ (qname && !strcmp (m->name, qname)) ||
+ (name && !strcmp (m->name, name))))
+ continue;
+
+ if (sig->call_convention == MONO_CALL_VARARG) {
+ if (mono_metadata_signature_vararg_match (sig, mono_method_signature (m)))
+ break;
+ } else {
+ if (mono_metadata_signature_equal (sig, mono_method_signature (m)))
+ break;
+ }
+ }
+
+ if (i < in_class->method.count)
+ return mono_class_get_method_by_index (from_class, i);
+ return NULL;
+}
+
+static MonoMethod *
+find_method (MonoClass *in_class, MonoClass *ic, const char* name, MonoMethodSignature *sig, MonoClass *from_class)
+{
+ int i;
+ char *qname, *fqname, *class_name;
+ gboolean is_interface;
+ MonoMethod *result = NULL;
+
+ is_interface = MONO_CLASS_IS_INTERFACE (in_class);
if (ic) {
- qname = g_strconcat (ic->name, ".", name, NULL);
+ class_name = mono_type_get_name_full (&ic->byval_arg, MONO_TYPE_NAME_FORMAT_IL);
+
+ qname = g_strconcat (class_name, ".", name, NULL);
if (ic->name_space && ic->name_space [0])
- fqname = g_strconcat (ic->name_space, ".", ic->name, ".", name, NULL);
+ fqname = g_strconcat (ic->name_space, ".", class_name, ".", name, NULL);
else
fqname = NULL;
} else
- qname = fqname = NULL;
+ class_name = qname = fqname = NULL;
- while (klass) {
- mono_class_setup_methods (klass);
- for (i = 0; i < klass->method.count; ++i) {
- MonoMethod *m = klass->methods [i];
+ while (in_class) {
+ g_assert (from_class);
+ result = find_method_in_class (in_class, name, qname, fqname, sig, from_class);
+ if (result)
+ goto out;
- if (!((fqname && !strcmp (m->name, fqname)) ||
- (qname && !strcmp (m->name, qname)) || !strcmp (m->name, name)))
- continue;
+ if (name [0] == '.' && (!strcmp (name, ".ctor") || !strcmp (name, ".cctor")))
+ break;
- if (sig->call_convention == MONO_CALL_VARARG) {
- if (mono_metadata_signature_vararg_match (sig, mono_method_signature (m)))
- return m;
- } else {
- if (mono_metadata_signature_equal (sig, mono_method_signature (m)))
- return m;
- }
+ g_assert (from_class->interface_count == in_class->interface_count);
+ for (i = 0; i < in_class->interface_count; i++) {
+ MonoClass *in_ic = in_class->interfaces [i];
+ MonoClass *from_ic = from_class->interfaces [i];
+ char *ic_qname, *ic_fqname, *ic_class_name;
+
+ ic_class_name = mono_type_get_name_full (&in_ic->byval_arg, MONO_TYPE_NAME_FORMAT_IL);
+ ic_qname = g_strconcat (ic_class_name, ".", name, NULL);
+ if (in_ic->name_space && in_ic->name_space [0])
+ ic_fqname = g_strconcat (in_ic->name_space, ".", ic_class_name, ".", name, NULL);
+ else
+ ic_fqname = NULL;
+
+ result = find_method_in_class (in_ic, ic ? name : NULL, ic_qname, ic_fqname, sig, from_ic);
+ g_free (ic_class_name);
+ g_free (ic_fqname);
+ g_free (ic_qname);
+ if (result)
+ goto out;
}
- if (name [0] == '.' && (strcmp (name, ".ctor") == 0 || strcmp (name, ".cctor") == 0))
- break;
+ in_class = in_class->parent;
+ from_class = from_class->parent;
+ }
+ g_assert (!in_class == !from_class);
+
+ if (is_interface)
+ result = find_method_in_class (mono_defaults.object_class, name, qname, fqname, sig, mono_defaults.object_class);
- klass = klass->parent;
+ out:
+ g_free (class_name);
+ g_free (fqname);
+ g_free (qname);
+ return result;
+}
+
+static MonoMethodSignature*
+inflate_generic_signature (MonoImage *image, MonoMethodSignature *sig, MonoGenericContext *context)
+{
+ MonoMethodSignature *res;
+ gboolean is_open;
+ int i;
+
+ if (!context)
+ return sig;
+
+ res = g_malloc0 (sizeof (MonoMethodSignature) + ((gint32)sig->param_count - MONO_ZERO_LEN_ARRAY) * sizeof (MonoType*));
+ res->param_count = sig->param_count;
+ res->sentinelpos = -1;
+ res->ret = mono_class_inflate_generic_type (sig->ret, context);
+ is_open = mono_class_is_open_constructed_type (res->ret);
+ for (i = 0; i < sig->param_count; ++i) {
+ res->params [i] = mono_class_inflate_generic_type (sig->params [i], context);
+ if (!is_open)
+ is_open = mono_class_is_open_constructed_type (res->params [i]);
}
+ res->hasthis = sig->hasthis;
+ res->explicit_this = sig->explicit_this;
+ res->call_convention = sig->call_convention;
+ res->pinvoke = sig->pinvoke;
+ res->generic_param_count = sig->generic_param_count;
+ res->sentinelpos = sig->sentinelpos;
+ res->has_type_parameters = is_open;
+ res->is_inflated = 1;
+ return res;
+}
- return NULL;
+static MonoMethodHeader*
+inflate_generic_header (MonoMethodHeader *header, MonoGenericContext *context)
+{
+ MonoMethodHeader *res;
+ int i;
+ res = g_malloc0 (sizeof (MonoMethodHeader) + sizeof (gpointer) * header->num_locals);
+ res->code = header->code;
+ res->code_size = header->code_size;
+ res->max_stack = header->max_stack;
+ res->num_clauses = header->num_clauses;
+ res->init_locals = header->init_locals;
+ res->num_locals = header->num_locals;
+ res->clauses = header->clauses;
+ for (i = 0; i < header->num_locals; ++i)
+ res->locals [i] = mono_class_inflate_generic_type (header->locals [i], context);
+ if (res->num_clauses) {
+ res->clauses = g_memdup (header->clauses, sizeof (MonoExceptionClause) * res->num_clauses);
+ for (i = 0; i < header->num_clauses; ++i) {
+ MonoExceptionClause *clause = &res->clauses [i];
+ MonoType *t;
+ if (clause->flags != MONO_EXCEPTION_CLAUSE_NONE)
+ continue;
+ t = mono_class_inflate_generic_type (&clause->data.catch_class->byval_arg, context);
+ clause->data.catch_class = mono_class_from_mono_type (t);
+ mono_metadata_free_type (t);
+ }
+ }
+ return res;
}
/*
int table = mono_metadata_token_table (token);
int idx = mono_metadata_token_index (token);
guint32 cols [MONO_MEMBERREF_SIZE];
- MonoMethodSignature *sig;
+ MonoMethodSignature *sig, *prev_sig;
const char *ptr;
/* !table is for wrappers: we should really assign their own token to them */
if (table == MONO_TABLE_METHODSPEC) {
g_assert (!(method->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL) &&
- !(method->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) &&
mono_method_signature (method));
g_assert (method->is_inflated);
/* FIXME: This might be incorrect for vararg methods */
return mono_method_signature (method);
- if (!(sig = g_hash_table_lookup (image->memberref_signatures, GUINT_TO_POINTER (token)))) {
+ mono_loader_lock ();
+ sig = g_hash_table_lookup (image->memberref_signatures, GUINT_TO_POINTER (token));
+ mono_loader_unlock ();
+ if (!sig) {
mono_metadata_decode_row (&image->tables [MONO_TABLE_MEMBERREF], idx-1, cols, MONO_MEMBERREF_SIZE);
-
+
ptr = mono_metadata_blob_heap (image, cols [MONO_MEMBERREF_SIGNATURE]);
mono_metadata_decode_blob_size (ptr, &ptr);
- sig = mono_metadata_parse_method_signature_full (image, context, 0, ptr, NULL);
- g_hash_table_insert (image->memberref_signatures, GUINT_TO_POINTER (token), sig);
+ sig = mono_metadata_parse_method_signature (image, 0, ptr, NULL);
+
+ mono_loader_lock ();
+ prev_sig = g_hash_table_lookup (image->memberref_signatures, GUINT_TO_POINTER (token));
+ if (prev_sig) {
+ /* Somebody got in before us */
+ sig = prev_sig;
+ }
+ else
+ g_hash_table_insert (image->memberref_signatures, GUINT_TO_POINTER (token), sig);
+ mono_loader_unlock ();
}
- sig = mono_class_inflate_generic_signature (image, sig, context);
+ if (context) {
+ MonoMethodSignature *cached;
+
+ /* This signature is not owned by a MonoMethod, so need to cache */
+ sig = inflate_generic_signature (image, sig, context);
+ cached = mono_metadata_get_inflated_signature (sig, context);
+ if (cached != sig)
+ mono_metadata_free_inflated_signature (sig);
+ sig = cached;
+ }
return sig;
}
return mono_method_get_signature_full (method, image, token, NULL);
}
+/* this is only for the typespec array methods */
+static MonoMethod*
+search_in_array_class (MonoClass *klass, const char *name, MonoMethodSignature *sig)
+{
+ int i;
+ for (i = 0; i < klass->method.count; ++i) {
+ MonoMethod *method = klass->methods [i];
+ if (strcmp (method->name, name) == 0 && sig->param_count == method->signature->param_count)
+ return method;
+ }
+ return NULL;
+}
+
static MonoMethod *
-method_from_memberref (MonoImage *image, guint32 idx, MonoGenericContext *context)
+method_from_memberref (MonoImage *image, guint32 idx, MonoGenericContext *typespec_context,
+ gboolean *used_context)
{
MonoClass *klass = NULL;
MonoMethod *method = NULL;
MonoTableInfo *tables = image->tables;
guint32 cols[6];
guint32 nindex, class;
- MonoGenericClass *gclass = NULL;
- MonoGenericContainer *container = NULL;
const char *mname;
MonoMethodSignature *sig;
const char *ptr;
mname = mono_metadata_string_heap (image, cols [MONO_MEMBERREF_NAME]);
+ /*
+ * Whether we actually used the `typespec_context' or not.
+ * This is used to tell our caller whether or not it's safe to insert the returned
+ * method into a cache.
+ */
+ if (used_context)
+ *used_context = class == MONO_MEMBERREF_PARENT_TYPESPEC;
+
switch (class) {
case MONO_MEMBERREF_PARENT_TYPEREF:
klass = mono_class_from_typeref (image, MONO_TOKEN_TYPE_REF | nindex);
if (!klass) {
- char *name = mono_class_name_from_token (image, MONO_TOKEN_TYPE_REF | nindex, context);
+ char *name = mono_class_name_from_token (image, MONO_TOKEN_TYPE_REF | nindex);
g_warning ("Missing method %s in assembly %s, type %s", mname, image->name, name);
+ mono_loader_set_error_type_load (name, image->assembly_name);
g_free (name);
return NULL;
}
break;
case MONO_MEMBERREF_PARENT_TYPESPEC:
- klass = mono_class_get_full (image, MONO_TOKEN_TYPE_SPEC | nindex, context);
+ /*
+ * Parse the TYPESPEC in the parent's context.
+ */
+ klass = mono_class_get_full (image, MONO_TOKEN_TYPE_SPEC | nindex, typespec_context);
if (!klass) {
- char *name = mono_class_name_from_token (image, MONO_TOKEN_TYPE_SPEC | nindex, context);
+ char *name = mono_class_name_from_token (image, MONO_TOKEN_TYPE_SPEC | nindex);
g_warning ("Missing method %s in assembly %s, type %s", mname, image->name, name);
+ mono_loader_set_error_type_load (name, image->assembly_name);
g_free (name);
return NULL;
}
case MONO_MEMBERREF_PARENT_TYPEDEF:
klass = mono_class_get (image, MONO_TOKEN_TYPE_DEF | nindex);
if (!klass) {
- char *name = mono_class_name_from_token (image, MONO_TOKEN_TYPE_DEF | nindex, context);
+ char *name = mono_class_name_from_token (image, MONO_TOKEN_TYPE_DEF | nindex);
g_warning ("Missing method %s in assembly %s, type %s", mname, image->name, name);
+ mono_loader_set_error_type_load (name, image->assembly_name);
g_free (name);
return NULL;
}
break;
case MONO_MEMBERREF_PARENT_METHODDEF:
return mono_get_method (image, MONO_TOKEN_METHOD_DEF | nindex, NULL);
+
default:
- g_error ("Memberref parent unknown: class: %d, index %d", class, nindex);
- g_assert_not_reached ();
- }
- g_assert (klass);
+ {
+ /* This message leaks */
+ char *message = g_strdup_printf ("Memberref parent unknown: class: %d, index %d", class, nindex);
+ mono_loader_set_error_method_load ("", message);
+ return NULL;
+ }
- if (klass->generic_class) {
- gclass = klass->generic_class;
- klass = gclass->container_class;
}
- if (klass->generic_container)
- container = klass->generic_container;
+ g_assert (klass);
mono_class_init (klass);
ptr = mono_metadata_blob_heap (image, cols [MONO_MEMBERREF_SIGNATURE]);
mono_metadata_decode_blob_size (ptr, &ptr);
- sig = mono_metadata_parse_method_signature_full (image, (MonoGenericContext *) container, 0, ptr, NULL);
+
+ sig = mono_metadata_parse_method_signature (image, 0, ptr, NULL);
+ if (sig == NULL)
+ return NULL;
switch (class) {
case MONO_MEMBERREF_PARENT_TYPEREF:
- method = find_method (klass, NULL, mname, sig);
- if (!method)
- g_warning ("Missing method %s in assembly %s, type %s", mname, image->name, mono_class_get_name (klass));
- mono_metadata_free_method_signature (sig);
+ case MONO_MEMBERREF_PARENT_TYPEDEF:
+ method = find_method (klass, NULL, mname, sig, klass);
break;
+
case MONO_MEMBERREF_PARENT_TYPESPEC: {
MonoType *type;
MonoMethod *result;
type = &klass->byval_arg;
if (type->type != MONO_TYPE_ARRAY && type->type != MONO_TYPE_SZARRAY) {
- method = find_method (klass, NULL, mname, sig);
- if (!method)
- g_warning ("Missing method %s in assembly %s, type %s", mname, image->name, mono_class_get_name (klass));
- else if (klass->generic_class && (klass != method->klass))
- method = mono_class_inflate_generic_method (
- method, klass->generic_class->context, klass);
- mono_metadata_free_method_signature (sig);
+ MonoClass *in_class = klass->generic_class ? klass->generic_class->container_class : klass;
+ method = find_method (in_class, NULL, mname, sig, klass);
break;
}
- result = (MonoMethod *)g_new0 (MonoMethodPInvoke, 1);
- result->klass = mono_class_get (image, MONO_TOKEN_TYPE_SPEC | nindex);
- result->iflags = METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL;
- result->signature = sig;
- result->name = mname;
-
- if (!strcmp (mname, ".ctor")) {
- /* we special-case this in the runtime. */
- return result;
- }
-
- if (!strcmp (mname, "Set")) {
- g_assert (sig->hasthis);
- g_assert (type->data.array->rank + 1 == sig->param_count);
- result->iflags |= METHOD_IMPL_ATTRIBUTE_RUNTIME;
- return result;
- }
-
- if (!strcmp (mname, "Get")) {
- g_assert (sig->hasthis);
- g_assert (type->data.array->rank == sig->param_count);
- result->iflags |= METHOD_IMPL_ATTRIBUTE_RUNTIME;
- return result;
- }
-
- if (!strcmp (mname, "Address")) {
- g_assert (sig->hasthis);
- g_assert (type->data.array->rank == sig->param_count);
- result->iflags |= METHOD_IMPL_ATTRIBUTE_RUNTIME;
+ /* we're an array and we created these methods already in klass in mono_class_init () */
+ result = search_in_array_class (klass, mname, sig);
+ if (result)
return result;
- }
g_assert_not_reached ();
break;
}
- case MONO_MEMBERREF_PARENT_TYPEDEF:
- method = find_method (klass, NULL, mname, sig);
- if (!method)
- g_warning ("Missing method %s in assembly %s, type %s", mname, image->name, mono_class_get_name (klass));
- mono_metadata_free_method_signature (sig);
- break;
default:
g_error ("Memberref parent unknown: class: %d, index %d", class, nindex);
g_assert_not_reached ();
}
- if (gclass)
- method = mono_class_inflate_generic_method (method, gclass->context, gclass->klass);
+ if (!method) {
+ char *msig = mono_signature_get_desc (sig, FALSE);
+ char * class_name = mono_type_get_name (&klass->byval_arg);
+ GString *s = g_string_new (mname);
+ if (sig->generic_param_count)
+ g_string_append_printf (s, "<[%d]>", sig->generic_param_count);
+ g_string_append_printf (s, "(%s)", msig);
+ g_free (msig);
+ msig = g_string_free (s, FALSE);
+
+ g_warning (
+ "Missing method %s::%s in assembly %s, referenced in assembly %s",
+ class_name, msig, klass->image->name, image->name);
+ mono_loader_set_error_method_load (class_name, mname);
+ g_free (msig);
+ g_free (class_name);
+ }
+ mono_metadata_free_method_signature (sig);
return method;
}
static MonoMethod *
method_from_methodspec (MonoImage *image, MonoGenericContext *context, guint32 idx)
{
- MonoMethod *method, *inflated;
+ MonoMethod *method;
+ MonoClass *klass;
MonoTableInfo *tables = image->tables;
- MonoGenericContext *new_context = NULL;
- MonoGenericMethod *gmethod;
- MonoGenericContainer *container = NULL;
+ MonoGenericContext new_context;
+ MonoGenericInst *inst;
const char *ptr;
guint32 cols [MONO_METHODSPEC_SIZE];
- guint32 token, param_count;
+ guint32 token, nindex, param_count;
mono_metadata_decode_row (&tables [MONO_TABLE_METHODSPEC], idx - 1, cols, MONO_METHODSPEC_SIZE);
token = cols [MONO_METHODSPEC_METHOD];
- if ((token & MONO_METHODDEFORREF_MASK) == MONO_METHODDEFORREF_METHODDEF)
- token = MONO_TOKEN_METHOD_DEF | (token >> MONO_METHODDEFORREF_BITS);
- else
- token = MONO_TOKEN_MEMBER_REF | (token >> MONO_METHODDEFORREF_BITS);
-
- method = mono_get_method (image, token, NULL);
+ nindex = token >> MONO_METHODDEFORREF_BITS;
ptr = mono_metadata_blob_heap (image, cols [MONO_METHODSPEC_SIGNATURE]);
-
+
mono_metadata_decode_value (ptr, &ptr);
ptr++;
param_count = mono_metadata_decode_value (ptr, &ptr);
-
g_assert (param_count);
- if (method->is_inflated)
- container = ((MonoMethodNormal *) ((MonoMethodInflated *) method)->declaring)->generic_container;
- else
- container = ((MonoMethodNormal *) method)->generic_container;
- g_assert (container && container->is_method);
-
- if (context) {
- g_assert (context->container);
- container->parent = context->container;
- if (container->parent->is_method)
- container->parent = container->parent->parent;
- }
-
- gmethod = g_new0 (MonoGenericMethod, 1);
- gmethod->container = container;
- gmethod->inst = mono_metadata_parse_generic_inst (
- image, (MonoGenericContext *) container, param_count, ptr, &ptr);
+ inst = mono_metadata_parse_generic_inst (image, NULL, param_count, ptr, &ptr);
+ if (context && inst->is_open)
+ inst = mono_metadata_inflate_generic_inst (inst, context);
- if (context)
- gmethod->inst = mono_metadata_inflate_generic_inst (gmethod->inst, context);
-
- if (!container->method_hash)
- container->method_hash = g_hash_table_new (
- (GHashFunc)mono_metadata_generic_method_hash, (GEqualFunc)mono_metadata_generic_method_equal);
-
- inflated = g_hash_table_lookup (container->method_hash, gmethod);
- if (inflated) {
- g_free (gmethod);
- return inflated;
- }
-
- if (!context) {
- new_context = g_new0 (MonoGenericContext, 1);
- new_context->container = container;
- new_context->gmethod = gmethod;
+ if ((token & MONO_METHODDEFORREF_MASK) == MONO_METHODDEFORREF_METHODDEF)
+ method = mono_get_method_full (image, MONO_TOKEN_METHOD_DEF | nindex, NULL, context);
+ else
+ method = method_from_memberref (image, nindex, context, NULL);
- context = new_context;
- } else {
- new_context = g_new0 (MonoGenericContext, 1);
- new_context->container = container;
- new_context->gmethod = gmethod;
- new_context->gclass = context->gclass;
+ klass = method->klass;
- context = new_context;
+ if (klass->generic_class) {
+ g_assert (method->is_inflated);
+ method = ((MonoMethodInflated *) method)->declaring;
}
- mono_stats.generics_metadata_size += sizeof (MonoGenericMethod) +
- sizeof (MonoGenericContext) + param_count * sizeof (MonoType);
+ new_context.class_inst = klass->generic_class ? klass->generic_class->context.class_inst : NULL;
+ new_context.method_inst = inst;
- inflated = mono_class_inflate_generic_method (method, context, NULL);
- g_hash_table_insert (container->method_hash, gmethod, inflated);
-
- if (new_context)
- context->gclass = inflated->klass->generic_class;
- return inflated;
+ return mono_class_inflate_generic_method_full (method, klass, &new_context);
}
-typedef struct MonoDllMap MonoDllMap;
-
-struct MonoDllMap {
- char *name;
- char *target;
+struct _MonoDllMap {
char *dll;
+ char *target;
+ char *func;
+ char *target_func;
MonoDllMap *next;
};
-static GHashTable *global_dll_map;
+static MonoDllMap *global_dll_map;
static int
-mono_dllmap_lookup_hash (GHashTable *dll_map, const char *dll, const char* func, const char **rdll, const char **rfunc) {
- MonoDllMap *map, *tmp;
+mono_dllmap_lookup_list (MonoDllMap *dll_map, const char *dll, const char* func, const char **rdll, const char **rfunc) {
+ int found = 0;
*rdll = dll;
mono_loader_lock ();
- map = g_hash_table_lookup (dll_map, dll);
- if (!map) {
- mono_loader_unlock ();
- return 0;
- }
- *rdll = map->target? map->target: dll;
-
- for (tmp = map->next; tmp; tmp = tmp->next) {
- if (strcmp (func, tmp->name) == 0) {
- *rfunc = tmp->name;
- if (tmp->dll)
- *rdll = tmp->dll;
- mono_loader_unlock ();
- return 1;
+ /*
+ * we use the first entry we find that matches, since entries from
+ * the config file are prepended to the list and we document that the
+ * later entries win.
+ */
+ for (; dll_map; dll_map = dll_map->next) {
+ if (dll_map->dll [0] == 'i' && dll_map->dll [1] == ':') {
+ if (g_ascii_strcasecmp (dll_map->dll + 2, dll))
+ continue;
+ } else if (strcmp (dll_map->dll, dll)) {
+ continue;
+ }
+ if (!found && dll_map->target) {
+ *rdll = dll_map->target;
+ found = 1;
+ /* we don't quit here, because we could find a full
+ * entry that matches also function and that has priority.
+ */
+ }
+ if (dll_map->func && strcmp (dll_map->func, func) == 0) {
+ *rfunc = dll_map->target_func;
+ break;
}
}
- *rfunc = func;
+
mono_loader_unlock ();
- return 1;
+ return found;
}
static int
{
int res;
if (assembly && assembly->dll_map) {
- res = mono_dllmap_lookup_hash (assembly->dll_map, dll, func, rdll, rfunc);
+ res = mono_dllmap_lookup_list (assembly->dll_map, dll, func, rdll, rfunc);
if (res)
return res;
}
- return mono_dllmap_lookup_hash (global_dll_map, dll, func, rdll, rfunc);
+ return mono_dllmap_lookup_list (global_dll_map, dll, func, rdll, rfunc);
}
void
mono_dllmap_insert (MonoImage *assembly, const char *dll, const char *func, const char *tdll, const char *tfunc) {
- MonoDllMap *map, *entry;
- GHashTable *dll_map = NULL;
+ MonoDllMap *entry;
mono_loader_lock ();
if (!assembly) {
- if (!global_dll_map)
- global_dll_map = g_hash_table_new (g_str_hash, g_str_equal);
- dll_map = global_dll_map;
+ entry = g_malloc0 (sizeof (MonoDllMap));
+ entry->dll = dll? g_strdup (dll): NULL;
+ entry->target = tdll? g_strdup (tdll): NULL;
+ entry->func = func? g_strdup (func): NULL;
+ entry->target_func = tfunc? g_strdup (tfunc): NULL;
+ entry->next = global_dll_map;
+ global_dll_map = entry;
} else {
- if (!assembly->dll_map)
- assembly->dll_map = g_hash_table_new (g_str_hash, g_str_equal);
- dll_map = assembly->dll_map;
- }
-
- map = g_hash_table_lookup (dll_map, dll);
- if (!map) {
- map = g_new0 (MonoDllMap, 1);
- map->dll = g_strdup (dll);
- if (tdll)
- map->target = g_strdup (tdll);
- g_hash_table_insert (dll_map, map->dll, map);
- }
- if (func) {
- entry = g_new0 (MonoDllMap, 1);
- entry->name = g_strdup (func);
- if (tfunc)
- entry->target = g_strdup (tfunc);
- if (tdll && map->target && strcmp (map->target, tdll))
- entry->dll = g_strdup (tdll);
- entry->next = map->next;
- map->next = entry;
+ MonoMemPool *mpool = assembly->mempool;
+ entry = mono_mempool_alloc0 (mpool, sizeof (MonoDllMap));
+ entry->dll = dll? mono_mempool_strdup (mpool, dll): NULL;
+ entry->target = tdll? mono_mempool_strdup (mpool, tdll): NULL;
+ entry->func = func? mono_mempool_strdup (mpool, func): NULL;
+ entry->target_func = tfunc? mono_mempool_strdup (mpool, tfunc): NULL;
+ entry->next = assembly->dll_map;
+ assembly->dll_map = entry;
}
mono_loader_unlock ();
}
+static GHashTable *global_module_map;
+
+static MonoDl*
+cached_module_load (const char *name, int flags, char **err)
+{
+ MonoDl *res;
+ mono_loader_lock ();
+ if (!global_module_map)
+ global_module_map = g_hash_table_new (g_str_hash, g_str_equal);
+ res = g_hash_table_lookup (global_module_map, name);
+ if (res) {
+ *err = NULL;
+ mono_loader_unlock ();
+ return res;
+ }
+ res = mono_dl_open (name, flags, err);
+ if (res)
+ g_hash_table_insert (global_module_map, g_strdup (name), res);
+ mono_loader_unlock ();
+ return res;
+}
+
gpointer
mono_lookup_pinvoke_call (MonoMethod *method, const char **exc_class, const char **exc_arg)
{
const char *import = NULL;
const char *orig_scope;
const char *new_scope;
+ char *error_msg;
char *full_name, *file_name;
int i;
- GModule *gmodule = NULL;
+ MonoDl *module = NULL;
g_assert (method->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL);
/* we allow a special name to dlopen from the running process namespace */
if (strcmp (new_scope, "__Internal") == 0)
- gmodule = g_module_open (NULL, G_MODULE_BIND_LAZY);
-
+ module = mono_dl_open (NULL, MONO_DL_LAZY, &error_msg);
+
/*
* Try loading the module using a variety of names
*/
- for (i = 0; i < 3; ++i) {
+ for (i = 0; i < 4; ++i) {
switch (i) {
case 0:
/* Try the original name */
else
continue;
break;
- default:
+ case 2:
if (strstr (new_scope, "lib") != new_scope) {
file_name = g_strdup_printf ("lib%s", new_scope);
}
else
continue;
break;
+ default:
+#ifndef PLATFORM_WIN32
+ if (!g_ascii_strcasecmp ("user32.dll", new_scope) ||
+ !g_ascii_strcasecmp ("kernel32.dll", new_scope) ||
+ !g_ascii_strcasecmp ("user32", new_scope) ||
+ !g_ascii_strcasecmp ("kernel", new_scope)) {
+ file_name = g_strdup ("libMonoSupportW.so");
+ } else
+#endif
+ continue;
+#ifndef PLATFORM_WIN32
+ break;
+#endif
}
- if (!gmodule) {
- full_name = g_module_build_path (NULL, file_name);
- mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
- "DllImport loading location: '%s'.", full_name);
- gmodule = g_module_open (full_name, G_MODULE_BIND_LAZY);
- if (!gmodule) {
+ if (!module) {
+ void *iter = NULL;
+ while ((full_name = mono_dl_build_path (NULL, file_name, &iter))) {
mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
- "DllImport error loading library: '%s'.",
- g_module_error ());
+ "DllImport loading location: '%s'.", full_name);
+ module = cached_module_load (full_name, MONO_DL_LAZY, &error_msg);
+ if (!module) {
+ mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
+ "DllImport error loading library: '%s'.",
+ error_msg);
+ g_free (error_msg);
+ }
+ g_free (full_name);
+ if (module)
+ break;
}
- g_free (full_name);
}
- if (!gmodule) {
- full_name = g_module_build_path (".", file_name);
- mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
- "DllImport loading library: '%s'.", full_name);
- gmodule = g_module_open (full_name, G_MODULE_BIND_LAZY);
- if (!gmodule) {
+ if (!module) {
+ void *iter = NULL;
+ while ((full_name = mono_dl_build_path (".", file_name, &iter))) {
mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
+ "DllImport loading library: '%s'.", full_name);
+ module = cached_module_load (full_name, MONO_DL_LAZY, &error_msg);
+ if (!module) {
+ mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
"DllImport error loading library '%s'.",
- g_module_error ());
+ error_msg);
+ g_free (error_msg);
+ }
+ g_free (full_name);
+ if (module)
+ break;
}
- g_free (full_name);
}
- if (!gmodule) {
+ if (!module) {
mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
"DllImport loading: '%s'.", file_name);
- gmodule=g_module_open (file_name, G_MODULE_BIND_LAZY);
- if (!gmodule) {
+ module = cached_module_load (file_name, MONO_DL_LAZY, &error_msg);
+ if (!module) {
mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
"DllImport error loading library '%s'.",
- g_module_error ());
+ error_msg);
}
}
g_free (file_name);
- if (gmodule)
+ if (module)
break;
}
- if (!gmodule) {
+ if (!module) {
mono_trace (G_LOG_LEVEL_WARNING, MONO_TRACE_DLLIMPORT,
"DllImport unable to load library '%s'.",
- g_module_error ());
+ error_msg);
+ g_free (error_msg);
if (exc_class) {
*exc_class = "DllNotFoundException";
"Searching for '%s'.", import);
if (piinfo->piflags & PINVOKE_ATTRIBUTE_NO_MANGLE) {
- g_module_symbol (gmodule, import, &piinfo->addr);
+ error_msg = mono_dl_symbol (module, import, &piinfo->addr);
} else {
char *mangled_name = NULL, *mangled_name2 = NULL;
int mangle_charset;
#ifdef PLATFORM_WIN32
if (mangle_charset == 0)
mangled_name = g_strconcat (import, "W", NULL);
+#else
+ /* Try the mangled name last */
+ if (mangle_charset == 1)
+ mangled_name = g_strconcat (import, "A", NULL);
#endif
break;
case PINVOKE_ATTRIBUTE_CHAR_SET_ANSI:
mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
"Probing '%s'.", mangled_name2);
- g_module_symbol (gmodule, mangled_name2, &piinfo->addr);
+ error_msg = mono_dl_symbol (module, mangled_name2, &piinfo->addr);
if (piinfo->addr)
mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_DLLIMPORT,
}
if (!piinfo->addr) {
+ g_free (error_msg);
if (exc_class) {
*exc_class = "EntryPointNotFoundException";
*exc_arg = import;
return piinfo->addr;
}
+/*
+ * LOCKING: assumes the loader lock to be taken.
+ */
static MonoMethod *
mono_get_method_from_token (MonoImage *image, guint32 token, MonoClass *klass,
- MonoGenericContext *context)
+ MonoGenericContext *context, gboolean *used_context)
{
MonoMethod *result;
int table = mono_metadata_token_table (token);
int size, i;
guint32 cols [MONO_TYPEDEF_SIZE];
- if (image->dynamic)
- return mono_lookup_dynamic_token (image, token);
+ if (image->dynamic) {
+ MonoClass *handle_class;
- if (table != MONO_TABLE_METHOD) {
- MonoGenericContainer *generic_container = NULL;
- if (context) {
- g_assert (context->container);
- generic_container = context->container;
+ result = mono_lookup_dynamic_token_class (image, token, TRUE, &handle_class, context);
+ // This checks the memberref type as well
+ if (result && handle_class != mono_defaults.methodhandle_class) {
+ mono_loader_set_error_bad_image (g_strdup ("Bad method token."));
+ return NULL;
}
- if (table == MONO_TABLE_METHODSPEC)
+ return result;
+ }
+
+ if (table != MONO_TABLE_METHOD) {
+ if (table == MONO_TABLE_METHODSPEC) {
+ if (used_context) *used_context = TRUE;
return method_from_methodspec (image, context, idx);
+ }
if (table != MONO_TABLE_MEMBERREF)
g_print("got wrong token: 0x%08x\n", token);
g_assert (table == MONO_TABLE_MEMBERREF);
- result = method_from_memberref (image, idx, context);
+ return method_from_memberref (image, idx, context, used_context);
+ }
- return result;
+ if (used_context) *used_context = FALSE;
+
+ if (idx > image->tables [MONO_TABLE_METHOD].rows) {
+ mono_loader_set_error_bad_image (g_strdup ("Bad method token."));
+ return NULL;
}
- mono_metadata_decode_row (&tables [table], idx - 1, cols, 6);
+ mono_metadata_decode_row (&image->tables [MONO_TABLE_METHOD], idx - 1, cols, 6);
if ((cols [2] & METHOD_ATTRIBUTE_PINVOKE_IMPL) ||
(cols [1] & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL))
- result = (MonoMethod *)g_new0 (MonoMethodPInvoke, 1);
- else
- result = (MonoMethod *)g_new0 (MonoMethodNormal, 1);
-
+ result = (MonoMethod *)mono_mempool_alloc0 (image->mempool, sizeof (MonoMethodPInvoke));
+ else
+ result = (MonoMethod *)mono_mempool_alloc0 (image->mempool, sizeof (MonoMethodNormal));
+
+ mono_stats.method_count ++;
+
+ if (!klass) {
+ guint32 type = mono_metadata_typedef_from_method (image, token);
+ klass = mono_class_get (image, MONO_TOKEN_TYPE_DEF | type);
+ if (klass == NULL)
+ return NULL;
+ }
+
result->slot = -1;
result->klass = klass;
result->flags = cols [2];
result->token = token;
result->name = mono_metadata_string_heap (image, cols [3]);
- if (klass)
- container = klass->generic_container;
+ container = klass->generic_container;
+ generic_container = mono_metadata_load_generic_params (image, token, container);
+ if (generic_container) {
+ result->is_generic = TRUE;
+ generic_container->owner.method = result;
+
+ mono_metadata_load_generic_param_constraints (image, token, generic_container);
- if (!(cols [1] & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) &&
- (!(cols [2] & METHOD_ATTRIBUTE_PINVOKE_IMPL) || cols [1] & METHOD_IMPL_ATTRIBUTE_NATIVE)) {
- generic_container = mono_metadata_load_generic_params (image, token, container);
- if (generic_container)
- container = generic_container;
+ for (i = 0; i < generic_container->type_argc; i++)
+ mono_class_from_generic_parameter (&generic_container->type_params [i], image, TRUE);
+
+ container = generic_container;
}
+
if (!sig) /* already taken from the methodref */
sig = mono_metadata_blob_heap (image, cols [4]);
size = mono_metadata_decode_blob_size (sig, &sig);
-
- /* there are generic params, or a container. FIXME: be lazy here for generics*/
- if (* sig & 0x10 || container)
- result->signature = mono_metadata_parse_method_signature_full (
- image, (MonoGenericContext *) container, idx, sig, NULL);
-
-
- if (!result->klass) {
- guint32 type = mono_metadata_typedef_from_method (image, token);
- result->klass = mono_class_get (image, MONO_TOKEN_TYPE_DEF | type);
- }
if (cols [1] & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) {
if (result->klass == mono_defaults.string_class && !strcmp (result->name, ".ctor"))
result->string_ctor = 1;
- } else if ((cols [2] & METHOD_ATTRIBUTE_PINVOKE_IMPL) && (!(cols [1] & METHOD_IMPL_ATTRIBUTE_NATIVE))) {
+ } else if (cols [2] & METHOD_ATTRIBUTE_PINVOKE_IMPL) {
MonoMethodPInvoke *piinfo = (MonoMethodPInvoke *)result;
- MonoTableInfo *im = &tables [MONO_TABLE_IMPLMAP];
-
- piinfo->implmap_idx = mono_metadata_implmap_from_method (image, idx - 1);
- piinfo->piflags = mono_metadata_decode_row_col (im, piinfo->implmap_idx - 1, MONO_IMPLMAP_FLAGS);
- } else {
- if (result->signature && result->signature->generic_param_count) {
- MonoMethodSignature *sig = result->signature;
-
- for (i = 0; i < sig->generic_param_count; i++) {
- generic_container->type_params [i].method = result;
-
- mono_class_from_generic_parameter (
- &generic_container->type_params [i], image, TRUE);
- }
-
- if (sig->ret->type == MONO_TYPE_MVAR) {
- int num = sig->ret->data.generic_param->num;
- sig->ret->data.generic_param = &generic_container->type_params [num];
- }
- for (i = 0; i < sig->param_count; i++) {
- MonoType *t = sig->params [i];
- if (t->type == MONO_TYPE_MVAR) {
- int num = t->data.generic_param->num;
- sig->params [i]->data.generic_param = &generic_container->type_params [num];
- }
- }
- }
-
- /* FIXME: lazyness for generics too, but how? */
- if (!result->klass->dummy && !(result->flags & METHOD_ATTRIBUTE_ABSTRACT) &&
- !(result->iflags & METHOD_IMPL_ATTRIBUTE_RUNTIME) && container) {
- gpointer loc = mono_image_rva_map (image, cols [0]);
- g_assert (loc);
- ((MonoMethodNormal *) result)->header = mono_metadata_parse_mh_full (
- image, (MonoGenericContext *) container, loc);
+#ifdef PLATFORM_WIN32
+ /* IJW is P/Invoke with a predefined function pointer. */
+ if (image->is_module_handle && (cols [1] & METHOD_IMPL_ATTRIBUTE_NATIVE)) {
+ piinfo->addr = mono_image_rva_map (image, cols [0]);
+ g_assert (piinfo->addr);
}
-
- ((MonoMethodNormal *) result)->generic_container = generic_container;
+#endif
+ piinfo->implmap_idx = mono_metadata_implmap_from_method (image, idx - 1);
+ /* Native methods can have no map. */
+ if (piinfo->implmap_idx)
+ piinfo->piflags = mono_metadata_decode_row_col (&tables [MONO_TABLE_IMPLMAP], piinfo->implmap_idx - 1, MONO_IMPLMAP_FLAGS);
}
+ if (generic_container)
+ mono_method_set_generic_container (result, generic_container);
+
return result;
}
return mono_get_method_full (image, token, klass, NULL);
}
+static gpointer
+get_method_token (gpointer value)
+{
+ MonoMethod *m = (MonoMethod*)value;
+
+ return GUINT_TO_POINTER (m->token);
+}
+
MonoMethod *
mono_get_method_full (MonoImage *image, guint32 token, MonoClass *klass,
MonoGenericContext *context)
{
MonoMethod *result;
+ gboolean used_context = FALSE;
/* We do everything inside the lock to prevent creation races */
mono_loader_lock ();
- if ((result = g_hash_table_lookup (image->method_cache, GINT_TO_POINTER (token)))) {
+ if (mono_metadata_token_table (token) == MONO_TABLE_METHOD) {
+ if (!image->method_cache)
+ image->method_cache = mono_value_hash_table_new (NULL, NULL, get_method_token);
+ result = mono_value_hash_table_lookup (image->method_cache, GINT_TO_POINTER (token));
+ } else {
+ if (!image->methodref_cache)
+ image->methodref_cache = g_hash_table_new (NULL, NULL);
+ result = g_hash_table_lookup (image->methodref_cache, GINT_TO_POINTER (token));
+ }
+ if (result) {
mono_loader_unlock ();
return result;
}
- result = mono_get_method_from_token (image, token, klass, context);
+ result = mono_get_method_from_token (image, token, klass, context, &used_context);
//printf ("GET: %s\n", mono_method_full_name (result, TRUE));
- if (!(result && result->is_inflated))
- g_hash_table_insert (image->method_cache, GINT_TO_POINTER (token), result);
+#if 0
+ g_message (G_STRLOC ": %s - %d - %d", mono_method_full_name (result, TRUE),
+ result->is_inflated, used_context);
+#endif
+
+ /*
+ * `used_context' specifies whether or not mono_get_method_from_token() actually
+ * used the `context' to get the method. See bug #80969.
+ */
+
+ if (!used_context && !(result && result->is_inflated) && result) {
+ if (mono_metadata_token_table (token) == MONO_TABLE_METHOD) {
+ mono_value_hash_table_insert (image->method_cache, GINT_TO_POINTER (token), result);
+ } else {
+ g_hash_table_insert (image->methodref_cache, GINT_TO_POINTER (token), result);
+ }
+ }
mono_loader_unlock ();
return result;
}
+/**
+ * mono_get_method_constrained:
+ *
+ * This is used when JITing the `constrained.' opcode.
+ *
+ * This returns two values: the contrained method, which has been inflated
+ * as the function return value; And the original CIL-stream method as
+ * declared in cil_method. The later is used for verification.
+ */
MonoMethod *
mono_get_method_constrained (MonoImage *image, guint32 token, MonoClass *constrained_class,
- MonoGenericContext *context)
+ MonoGenericContext *context, MonoMethod **cil_method)
{
MonoMethod *method, *result;
MonoClass *ic = NULL;
- MonoGenericClass *gclass = NULL;
+ MonoGenericContext *class_context = NULL, *method_context = NULL;
+ MonoMethodSignature *sig, *original_sig;
mono_loader_lock ();
- method = mono_get_method_from_token (image, token, NULL, context);
- if (!method) {
+ *cil_method = mono_get_method_from_token (image, token, NULL, context, NULL);
+ if (!*cil_method) {
mono_loader_unlock ();
return NULL;
}
mono_class_init (constrained_class);
- method = mono_get_inflated_method (method);
+ method = *cil_method;
+ original_sig = sig = mono_method_signature (method);
+
+ if (method->is_inflated && sig->generic_param_count) {
+ MonoMethodInflated *imethod = (MonoMethodInflated *) method;
+ sig = mono_method_signature (imethod->declaring);
+ method_context = mono_method_get_context (method);
+
+ original_sig = sig;
+ /*
+ * We must inflate the signature with the class instantiation to work on
+ * cases where a class inherit from a generic type and the override replaces
+ * and type argument which a concrete type. See #325283.
+ */
+ if (method_context->class_inst) {
+ MonoGenericContext ctx;
+ ctx.method_inst = NULL;
+ ctx.class_inst = method_context->class_inst;
+
+ sig = inflate_generic_signature (method->klass->image, sig, &ctx);
+ }
+ }
if ((constrained_class != method->klass) && (method->klass->interface_id != 0))
ic = method->klass;
if (constrained_class->generic_class)
- gclass = constrained_class->generic_class;
+ class_context = mono_class_get_context (constrained_class);
- result = find_method (constrained_class, ic, method->name, mono_method_signature (method));
- if (!result)
- g_warning ("Missing method %s in assembly %s token %x", method->name,
- image->name, token);
+ result = find_method (constrained_class, ic, method->name, sig, constrained_class);
+ if (sig != original_sig)
+ mono_metadata_free_inflated_signature (sig);
- if (gclass)
- result = mono_class_inflate_generic_method (result, gclass->context, gclass->klass);
+ if (!result) {
+ g_warning ("Missing method %s.%s.%s in assembly %s token %x", method->klass->name_space,
+ method->klass->name, method->name, image->name, token);
+ mono_loader_unlock ();
+ return NULL;
+ }
+
+ if (class_context)
+ result = mono_class_inflate_generic_method (result, class_context);
+ if (method_context)
+ result = mono_class_inflate_generic_method (result, method_context);
mono_loader_unlock ();
return result;
void
mono_free_method (MonoMethod *method)
{
+ if (mono_profiler_get_events () & MONO_PROFILE_METHOD_EVENTS)
+ mono_profiler_method_free (method);
+
+ /* FIXME: This hack will go away when the profiler will support freeing methods */
+ if (mono_profiler_get_events () != MONO_PROFILE_NONE)
+ return;
+
if (method->signature) {
/*
* FIXME: This causes crashes because the types inside signatures and
* locals are shared.
*/
/* mono_metadata_free_method_signature (method->signature); */
- g_free (method->signature);
+ /* g_free (method->signature); */
}
-
+
if (method->dynamic) {
MonoMethodWrapper *mw = (MonoMethodWrapper*)method;
+ int i;
+
+ mono_loader_lock ();
+ mono_property_hash_remove_object (method->klass->image->property_hash, method);
+ mono_loader_unlock ();
g_free ((char*)method->name);
- if (mw->method.header)
+ if (mw->method.header) {
g_free ((char*)mw->method.header->code);
+ for (i = 0; i < mw->method.header->num_locals; ++i)
+ g_free (mw->method.header->locals [i]);
+ g_free (mw->method.header->clauses);
+ g_free (mw->method.header);
+ }
g_free (mw->method_data);
+ g_free (method->signature);
+ g_free (method);
}
-
- if (!(method->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) && ((MonoMethodNormal *)method)->header) {
- /* FIXME: Ditto */
- /* mono_metadata_free_mh (((MonoMethodNormal *)method)->header); */
- g_free (((MonoMethodNormal*)method)->header);
- }
-
- g_free (method);
}
void
mono_method_get_param_names (MonoMethod *method, const char **names)
{
int i, lastp;
- MonoClass *klass = method->klass;
+ MonoClass *klass;
MonoTableInfo *methodt;
MonoTableInfo *paramt;
guint32 idx;
+ if (method->is_inflated)
+ method = ((MonoMethodInflated *) method)->declaring;
+
if (!mono_method_signature (method)->param_count)
return;
for (i = 0; i < mono_method_signature (method)->param_count; ++i)
names [i] = "";
- if (klass->generic_class) /* copy the names later */
+ klass = method->klass;
+ if (klass->rank)
return;
mono_class_init (klass);
idx = mono_method_get_index (method);
if (idx > 0) {
guint32 cols [MONO_PARAM_SIZE];
- guint param_index = mono_metadata_decode_row_col (methodt, idx - 1, MONO_METHOD_PARAMLIST);
+ guint param_index;
+
+ param_index = mono_metadata_decode_row_col (methodt, idx - 1, MONO_METHOD_PARAMLIST);
if (idx < methodt->rows)
lastp = mono_metadata_decode_row_col (methodt, idx, MONO_METHOD_PARAMLIST);
MonoTableInfo *methodt;
guint32 idx;
- if (klass->generic_class)
- g_assert_not_reached ();
-
mono_class_init (klass);
if (klass->image->dynamic) {
if (idx > 0) {
guint param_index = mono_metadata_decode_row_col (methodt, idx - 1, MONO_METHOD_PARAMLIST);
- return mono_metadata_make_token (MONO_TABLE_PARAM, param_index + index);
+ if (index == -1)
+ /* Return value */
+ return mono_metadata_make_token (MONO_TABLE_PARAM, 0);
+ else
+ return mono_metadata_make_token (MONO_TABLE_PARAM, param_index + index);
}
return 0;
if (idx > 0) {
guint32 cols [MONO_PARAM_SIZE];
guint param_index = mono_metadata_decode_row_col (methodt, idx - 1, MONO_METHOD_PARAMLIST);
-
+
if (idx + 1 < methodt->rows)
lastp = mono_metadata_decode_row_col (methodt, idx, MONO_METHOD_PARAMLIST);
else
LeaveCriticalSection (&loader_mutex);
}
-MonoMethodSignature*
+/**
+ * mono_method_signature:
+ *
+ * Return the signature of the method M. On failure, returns NULL.
+ */
+MonoMethodSignature*
mono_method_signature (MonoMethod *m)
{
int idx;
int size;
MonoImage* img;
const char *sig;
-
+ gboolean can_cache_signature;
+ MonoGenericContainer *container;
+ MonoMethodSignature *signature = NULL;
+ int *pattrs;
+
+ /* We need memory barriers below because of the double-checked locking pattern */
+
if (m->signature)
return m->signature;
-
+
mono_loader_lock ();
-
+
if (m->signature) {
mono_loader_unlock ();
return m->signature;
}
-
+
+ if (m->is_inflated) {
+ MonoMethodInflated *imethod = (MonoMethodInflated *) m;
+ /* the lock is recursive */
+ signature = mono_method_signature (imethod->declaring);
+ signature = inflate_generic_signature (imethod->declaring->klass->image, signature, mono_method_get_context (m));
+ mono_memory_barrier ();
+ m->signature = signature;
+ mono_loader_unlock ();
+ return m->signature;
+ }
+
g_assert (mono_metadata_token_table (m->token) == MONO_TABLE_METHOD);
idx = mono_metadata_token_index (m->token);
img = m->klass->image;
-
+
sig = mono_metadata_blob_heap (img, mono_metadata_decode_row_col (&img->tables [MONO_TABLE_METHOD], idx - 1, MONO_METHOD_SIGNATURE));
- size = mono_metadata_decode_blob_size (sig, &sig);
-
- m->signature = mono_metadata_parse_method_signature_full (img, NULL, idx, sig, NULL);
-
+
+ g_assert (!m->klass->generic_class);
+ container = mono_method_get_generic_container (m);
+ if (!container)
+ container = m->klass->generic_container;
+
+ /* Generic signatures depend on the container so they cannot be cached */
+ /* icall/pinvoke signatures cannot be cached cause we modify them below */
+ can_cache_signature = !(m->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) && !(m->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL) && !container;
+
+ /* If the method has parameter attributes, that can modify the signature */
+ pattrs = mono_metadata_get_param_attrs (img, idx);
+ if (pattrs) {
+ can_cache_signature = FALSE;
+ g_free (pattrs);
+ }
+
+ if (can_cache_signature)
+ signature = g_hash_table_lookup (img->method_signatures, sig);
+
+ if (!signature) {
+ const char *sig_body;
+
+ size = mono_metadata_decode_blob_size (sig, &sig_body);
+
+ signature = mono_metadata_parse_method_signature_full (img, container, idx, sig_body, NULL);
+ if (!signature) {
+ mono_loader_unlock ();
+ return NULL;
+ }
+
+ if (can_cache_signature)
+ g_hash_table_insert (img->method_signatures, (gpointer)sig, signature);
+ }
+
+ /* Verify metadata consistency */
+ if (signature->generic_param_count) {
+ if (!container || !container->is_method)
+ g_error ("Signature claims method has generic parameters, but generic_params table says it doesn't");
+ if (container->type_argc != signature->generic_param_count)
+ g_error ("Inconsistent generic parameter count. Signature says %d, generic_params table says %d",
+ signature->generic_param_count, container->type_argc);
+ } else if (container && container->is_method && container->type_argc)
+ g_error ("generic_params table claims method has generic parameters, but signature says it doesn't");
+
if (m->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL)
- m->signature->pinvoke = 1;
- else if ((m->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL) && (!(m->iflags & METHOD_IMPL_ATTRIBUTE_NATIVE))) {
+ signature->pinvoke = 1;
+ else if (m->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL) {
MonoCallConvention conv = 0;
MonoMethodPInvoke *piinfo = (MonoMethodPInvoke *)m;
- m->signature->pinvoke = 1;
-
+ signature->pinvoke = 1;
+
switch (piinfo->piflags & PINVOKE_ATTRIBUTE_CALL_CONV_MASK) {
+ case 0: /* no call conv, so using default */
case PINVOKE_ATTRIBUTE_CALL_CONV_WINAPI:
conv = MONO_CALL_DEFAULT;
break;
case PINVOKE_ATTRIBUTE_CALL_CONV_GENERIC:
case PINVOKE_ATTRIBUTE_CALL_CONV_GENERICINST:
default:
- g_warning ("unsupported calling convention");
+ g_warning ("unsupported calling convention : 0x%04x", piinfo->piflags);
g_assert_not_reached ();
- }
- m->signature->call_convention = conv;
+ }
+ signature->call_convention = conv;
}
-
+
+ mono_memory_barrier ();
+ m->signature = signature;
+
mono_loader_unlock ();
return m->signature;
}
return method->token;
}
-MonoMethodHeader*
+MonoMethodHeader*
mono_method_get_header (MonoMethod *method)
{
int idx;
MonoImage* img;
gpointer loc;
MonoMethodNormal* mn = (MonoMethodNormal*) method;
-
+
+ if ((method->flags & METHOD_ATTRIBUTE_ABSTRACT) || (method->iflags & METHOD_IMPL_ATTRIBUTE_RUNTIME) || (method->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) || (method->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL))
+ return NULL;
+
#ifdef G_LIKELY
if (G_LIKELY (mn->header))
#else
if (mn->header)
#endif
return mn->header;
-
- if (method->klass->dummy || (method->flags & METHOD_ATTRIBUTE_ABSTRACT) || (method->iflags & METHOD_IMPL_ATTRIBUTE_RUNTIME) || (method->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) || (method->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL))
- return NULL;
-
+
mono_loader_lock ();
-
+
if (mn->header) {
mono_loader_unlock ();
return mn->header;
}
-
+
+ if (method->is_inflated) {
+ MonoMethodInflated *imethod = (MonoMethodInflated *) method;
+ MonoMethodHeader *header;
+ /* the lock is recursive */
+ header = mono_method_get_header (imethod->declaring);
+ mn->header = inflate_generic_header (header, mono_method_get_context (method));
+ mono_loader_unlock ();
+ return mn->header;
+ }
+
g_assert (mono_metadata_token_table (method->token) == MONO_TABLE_METHOD);
idx = mono_metadata_token_index (method->token);
img = method->klass->image;
rva = mono_metadata_decode_row_col (&img->tables [MONO_TABLE_METHOD], idx - 1, MONO_METHOD_RVA);
loc = mono_image_rva_map (img, rva);
-
+
g_assert (loc);
-
- mn->header = mono_metadata_parse_mh_full (img, (MonoGenericContext *) mn->generic_container, loc);
-
+
+ mn->header = mono_metadata_parse_mh_full (img, mono_method_get_generic_container (method), loc);
+
mono_loader_unlock ();
return mn->header;
}
MonoClass *klass = method->klass;
int i;
+ if (method->token)
+ return mono_metadata_token_index (method->token);
+
mono_class_setup_methods (klass);
for (i = 0; i < klass->method.count; ++i) {
- if (method == klass->methods [i])
- return klass->method.first + 1 + i;
+ if (method == klass->methods [i]) {
+ if (klass->image->uncompressed_metadata)
+ return mono_metadata_translate_token_index (klass->image, MONO_TABLE_METHOD, klass->method.first + i + 1);
+ else
+ return klass->method.first + i + 1;
+ }
}
return 0;
}
projects / mono.git / blobdiff