--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/src/share/vm/runtime/reflection.cpp Sat Dec 01 00:00:00 2007 +0000
@@ -0,0 +1,1586 @@
+/*
+ * Copyright 1997-2007 Sun Microsystems, Inc. All Rights Reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ *
+ */
+
+#include "incls/_precompiled.incl"
+#include "incls/_reflection.cpp.incl"
+
+#define JAVA_1_5_VERSION 49
+
+static void trace_class_resolution(klassOop to_class) {
+ ResourceMark rm;
+ int line_number = -1;
+ const char * source_file = NULL;
+ klassOop caller = NULL;
+ JavaThread* jthread = JavaThread::current();
+ if (jthread->has_last_Java_frame()) {
+ vframeStream vfst(jthread);
+ // skip over any frames belonging to java.lang.Class
+ while (!vfst.at_end() &&
+ instanceKlass::cast(vfst.method()->method_holder())->name() == vmSymbols::java_lang_Class()) {
+ vfst.next();
+ }
+ if (!vfst.at_end()) {
+ // this frame is a likely suspect
+ caller = vfst.method()->method_holder();
+ line_number = vfst.method()->line_number_from_bci(vfst.bci());
+ symbolOop s = instanceKlass::cast(vfst.method()->method_holder())->source_file_name();
+ if (s != NULL) {
+ source_file = s->as_C_string();
+ }
+ }
+ }
+ if (caller != NULL) {
+ const char * from = Klass::cast(caller)->external_name();
+ const char * to = Klass::cast(to_class)->external_name();
+ // print in a single call to reduce interleaving between threads
+ if (source_file != NULL) {
+ tty->print("RESOLVE %s %s %s:%d (reflection)\n", from, to, source_file, line_number);
+ } else {
+ tty->print("RESOLVE %s %s (reflection)\n", from, to);
+ }
+ }
+}
+
+
+oop Reflection::box(jvalue* value, BasicType type, TRAPS) {
+ if (type == T_VOID) {
+ return NULL;
+ }
+ if (type == T_OBJECT || type == T_ARRAY) {
+ // regular objects are not boxed
+ return (oop) value->l;
+ }
+ oop result = java_lang_boxing_object::create(type, value, CHECK_NULL);
+ if (result == NULL) {
+ THROW_(vmSymbols::java_lang_IllegalArgumentException(), result);
+ }
+ return result;
+}
+
+
+BasicType Reflection::unbox_for_primitive(oop box, jvalue* value, TRAPS) {
+ if (box == NULL) {
+ THROW_(vmSymbols::java_lang_IllegalArgumentException(), T_ILLEGAL);
+ }
+ return java_lang_boxing_object::get_value(box, value);
+}
+
+BasicType Reflection::unbox_for_regular_object(oop box, jvalue* value) {
+ // Note: box is really the unboxed oop. It might even be a Short, etc.!
+ value->l = (jobject) box;
+ return T_OBJECT;
+}
+
+
+void Reflection::widen(jvalue* value, BasicType current_type, BasicType wide_type, TRAPS) {
+ assert(wide_type != current_type, "widen should not be called with identical types");
+ switch (wide_type) {
+ case T_BOOLEAN:
+ case T_BYTE:
+ case T_CHAR:
+ break; // fail
+ case T_SHORT:
+ switch (current_type) {
+ case T_BYTE:
+ value->s = (jshort) value->b;
+ return;
+ }
+ break; // fail
+ case T_INT:
+ switch (current_type) {
+ case T_BYTE:
+ value->i = (jint) value->b;
+ return;
+ case T_CHAR:
+ value->i = (jint) value->c;
+ return;
+ case T_SHORT:
+ value->i = (jint) value->s;
+ return;
+ }
+ break; // fail
+ case T_LONG:
+ switch (current_type) {
+ case T_BYTE:
+ value->j = (jlong) value->b;
+ return;
+ case T_CHAR:
+ value->j = (jlong) value->c;
+ return;
+ case T_SHORT:
+ value->j = (jlong) value->s;
+ return;
+ case T_INT:
+ value->j = (jlong) value->i;
+ return;
+ }
+ break; // fail
+ case T_FLOAT:
+ switch (current_type) {
+ case T_BYTE:
+ value->f = (jfloat) value->b;
+ return;
+ case T_CHAR:
+ value->f = (jfloat) value->c;
+ return;
+ case T_SHORT:
+ value->f = (jfloat) value->s;
+ return;
+ case T_INT:
+ value->f = (jfloat) value->i;
+ return;
+ case T_LONG:
+ value->f = (jfloat) value->j;
+ return;
+ }
+ break; // fail
+ case T_DOUBLE:
+ switch (current_type) {
+ case T_BYTE:
+ value->d = (jdouble) value->b;
+ return;
+ case T_CHAR:
+ value->d = (jdouble) value->c;
+ return;
+ case T_SHORT:
+ value->d = (jdouble) value->s;
+ return;
+ case T_INT:
+ value->d = (jdouble) value->i;
+ return;
+ case T_FLOAT:
+ value->d = (jdouble) value->f;
+ return;
+ case T_LONG:
+ value->d = (jdouble) value->j;
+ return;
+ }
+ break; // fail
+ default:
+ break; // fail
+ }
+ THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "argument type mismatch");
+}
+
+
+BasicType Reflection::array_get(jvalue* value, arrayOop a, int index, TRAPS) {
+ if (!a->is_within_bounds(index)) {
+ THROW_(vmSymbols::java_lang_ArrayIndexOutOfBoundsException(), T_ILLEGAL);
+ }
+ if (a->is_objArray()) {
+ value->l = (jobject) objArrayOop(a)->obj_at(index);
+ return T_OBJECT;
+ } else {
+ assert(a->is_typeArray(), "just checking");
+ BasicType type = typeArrayKlass::cast(a->klass())->element_type();
+ switch (type) {
+ case T_BOOLEAN:
+ value->z = typeArrayOop(a)->bool_at(index);
+ break;
+ case T_CHAR:
+ value->c = typeArrayOop(a)->char_at(index);
+ break;
+ case T_FLOAT:
+ value->f = typeArrayOop(a)->float_at(index);
+ break;
+ case T_DOUBLE:
+ value->d = typeArrayOop(a)->double_at(index);
+ break;
+ case T_BYTE:
+ value->b = typeArrayOop(a)->byte_at(index);
+ break;
+ case T_SHORT:
+ value->s = typeArrayOop(a)->short_at(index);
+ break;
+ case T_INT:
+ value->i = typeArrayOop(a)->int_at(index);
+ break;
+ case T_LONG:
+ value->j = typeArrayOop(a)->long_at(index);
+ break;
+ default:
+ return T_ILLEGAL;
+ }
+ return type;
+ }
+}
+
+
+void Reflection::array_set(jvalue* value, arrayOop a, int index, BasicType value_type, TRAPS) {
+ if (!a->is_within_bounds(index)) {
+ THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException());
+ }
+ if (a->is_objArray()) {
+ if (value_type == T_OBJECT) {
+ oop obj = (oop) value->l;
+ if (obj != NULL) {
+ klassOop element_klass = objArrayKlass::cast(a->klass())->element_klass();
+ if (!obj->is_a(element_klass)) {
+ THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "array element type mismatch");
+ }
+ }
+ objArrayOop(a)->obj_at_put(index, obj);
+ }
+ } else {
+ assert(a->is_typeArray(), "just checking");
+ BasicType array_type = typeArrayKlass::cast(a->klass())->element_type();
+ if (array_type != value_type) {
+ // The widen operation can potentially throw an exception, but cannot block,
+ // so typeArrayOop a is safe if the call succeeds.
+ widen(value, value_type, array_type, CHECK);
+ }
+ switch (array_type) {
+ case T_BOOLEAN:
+ typeArrayOop(a)->bool_at_put(index, value->z);
+ break;
+ case T_CHAR:
+ typeArrayOop(a)->char_at_put(index, value->c);
+ break;
+ case T_FLOAT:
+ typeArrayOop(a)->float_at_put(index, value->f);
+ break;
+ case T_DOUBLE:
+ typeArrayOop(a)->double_at_put(index, value->d);
+ break;
+ case T_BYTE:
+ typeArrayOop(a)->byte_at_put(index, value->b);
+ break;
+ case T_SHORT:
+ typeArrayOop(a)->short_at_put(index, value->s);
+ break;
+ case T_INT:
+ typeArrayOop(a)->int_at_put(index, value->i);
+ break;
+ case T_LONG:
+ typeArrayOop(a)->long_at_put(index, value->j);
+ break;
+ default:
+ THROW(vmSymbols::java_lang_IllegalArgumentException());
+ }
+ }
+}
+
+
+klassOop Reflection::basic_type_mirror_to_arrayklass(oop basic_type_mirror, TRAPS) {
+ assert(java_lang_Class::is_primitive(basic_type_mirror), "just checking");
+ BasicType type = java_lang_Class::primitive_type(basic_type_mirror);
+ if (type == T_VOID) {
+ THROW_0(vmSymbols::java_lang_IllegalArgumentException());
+ } else {
+ return Universe::typeArrayKlassObj(type);
+ }
+}
+
+
+oop Reflection:: basic_type_arrayklass_to_mirror(klassOop basic_type_arrayklass, TRAPS) {
+ BasicType type = typeArrayKlass::cast(basic_type_arrayklass)->element_type();
+ return Universe::java_mirror(type);
+}
+
+
+arrayOop Reflection::reflect_new_array(oop element_mirror, jint length, TRAPS) {
+ if (element_mirror == NULL) {
+ THROW_0(vmSymbols::java_lang_NullPointerException());
+ }
+ if (length < 0) {
+ THROW_0(vmSymbols::java_lang_NegativeArraySizeException());
+ }
+ if (java_lang_Class::is_primitive(element_mirror)) {
+ klassOop tak = basic_type_mirror_to_arrayklass(element_mirror, CHECK_NULL);
+ return typeArrayKlass::cast(tak)->allocate(length, THREAD);
+ } else {
+ klassOop k = java_lang_Class::as_klassOop(element_mirror);
+ if (Klass::cast(k)->oop_is_array() && arrayKlass::cast(k)->dimension() >= MAX_DIM) {
+ THROW_0(vmSymbols::java_lang_IllegalArgumentException());
+ }
+ return oopFactory::new_objArray(k, length, THREAD);
+ }
+}
+
+
+arrayOop Reflection::reflect_new_multi_array(oop element_mirror, typeArrayOop dim_array, TRAPS) {
+ assert(dim_array->is_typeArray(), "just checking");
+ assert(typeArrayKlass::cast(dim_array->klass())->element_type() == T_INT, "just checking");
+
+ if (element_mirror == NULL) {
+ THROW_0(vmSymbols::java_lang_NullPointerException());
+ }
+
+ int len = dim_array->length();
+ if (len <= 0 || len > MAX_DIM) {
+ THROW_0(vmSymbols::java_lang_IllegalArgumentException());
+ }
+
+ jint dimensions[MAX_DIM]; // C array copy of intArrayOop
+ for (int i = 0; i < len; i++) {
+ int d = dim_array->int_at(i);
+ if (d < 0) {
+ THROW_0(vmSymbols::java_lang_NegativeArraySizeException());
+ }
+ dimensions[i] = d;
+ }
+
+ klassOop klass;
+ int dim = len;
+ if (java_lang_Class::is_primitive(element_mirror)) {
+ klass = basic_type_mirror_to_arrayklass(element_mirror, CHECK_NULL);
+ } else {
+ klass = java_lang_Class::as_klassOop(element_mirror);
+ if (Klass::cast(klass)->oop_is_array()) {
+ int k_dim = arrayKlass::cast(klass)->dimension();
+ if (k_dim + len > MAX_DIM) {
+ THROW_0(vmSymbols::java_lang_IllegalArgumentException());
+ }
+ dim += k_dim;
+ }
+ }
+ klass = Klass::cast(klass)->array_klass(dim, CHECK_NULL);
+ oop obj = arrayKlass::cast(klass)->multi_allocate(len, dimensions, THREAD);
+ assert(obj->is_array(), "just checking");
+ return arrayOop(obj);
+}
+
+
+oop Reflection::array_component_type(oop mirror, TRAPS) {
+ if (java_lang_Class::is_primitive(mirror)) {
+ return NULL;
+ }
+
+ klassOop klass = java_lang_Class::as_klassOop(mirror);
+ if (!Klass::cast(klass)->oop_is_array()) {
+ return NULL;
+ }
+
+ oop result = arrayKlass::cast(klass)->component_mirror();
+#ifdef ASSERT
+ oop result2 = NULL;
+ if (arrayKlass::cast(klass)->dimension() == 1) {
+ if (Klass::cast(klass)->oop_is_typeArray()) {
+ result2 = basic_type_arrayklass_to_mirror(klass, CHECK_NULL);
+ } else {
+ result2 = Klass::cast(objArrayKlass::cast(klass)->element_klass())->java_mirror();
+ }
+ } else {
+ klassOop lower_dim = arrayKlass::cast(klass)->lower_dimension();
+ assert(Klass::cast(lower_dim)->oop_is_array(), "just checking");
+ result2 = Klass::cast(lower_dim)->java_mirror();
+ }
+ assert(result == result2, "results must be consistent");
+#endif //ASSERT
+ return result;
+}
+
+
+bool Reflection::reflect_check_access(klassOop field_class, AccessFlags acc, klassOop target_class, bool is_method_invoke, TRAPS) {
+ // field_class : declaring class
+ // acc : declared field access
+ // target_class : for protected
+
+ // Check if field or method is accessible to client. Throw an
+ // IllegalAccessException and return false if not.
+
+ // The "client" is the class associated with the nearest real frame
+ // getCallerClass already skips Method.invoke frames, so pass 0 in
+ // that case (same as classic).
+ ResourceMark rm(THREAD);
+ assert(THREAD->is_Java_thread(), "sanity check");
+ klassOop client_class = ((JavaThread *)THREAD)->security_get_caller_class(is_method_invoke ? 0 : 1);
+
+ if (client_class != field_class) {
+ if (!verify_class_access(client_class, field_class, false)
+ || !verify_field_access(client_class,
+ field_class,
+ field_class,
+ acc,
+ false)) {
+ THROW_(vmSymbols::java_lang_IllegalAccessException(), false);
+ }
+ }
+
+ // Additional test for protected members: JLS 6.6.2
+
+ if (acc.is_protected()) {
+ if (target_class != client_class) {
+ if (!is_same_class_package(client_class, field_class)) {
+ if (!Klass::cast(target_class)->is_subclass_of(client_class)) {
+ THROW_(vmSymbols::java_lang_IllegalAccessException(), false);
+ }
+ }
+ }
+ }
+
+ // Passed all tests
+ return true;
+}
+
+
+bool Reflection::verify_class_access(klassOop current_class, klassOop new_class, bool classloader_only) {
+ // Verify that current_class can access new_class. If the classloader_only
+ // flag is set, we automatically allow any accesses in which current_class
+ // doesn't have a classloader.
+ if ((current_class == NULL) ||
+ (current_class == new_class) ||
+ (instanceKlass::cast(new_class)->is_public()) ||
+ is_same_class_package(current_class, new_class)) {
+ return true;
+ }
+ // New (1.4) reflection implementation. Allow all accesses from
+ // sun/reflect/MagicAccessorImpl subclasses to succeed trivially.
+ if ( JDK_Version::is_gte_jdk14x_version()
+ && UseNewReflection
+ && Klass::cast(current_class)->is_subclass_of(SystemDictionary::reflect_magic_klass())) {
+ return true;
+ }
+
+ return can_relax_access_check_for(current_class, new_class, classloader_only);
+}
+
+bool Reflection::can_relax_access_check_for(
+ klassOop accessor, klassOop accessee, bool classloader_only) {
+ instanceKlass* accessor_ik = instanceKlass::cast(accessor);
+ instanceKlass* accessee_ik = instanceKlass::cast(accessee);
+ if (RelaxAccessControlCheck ||
+ (accessor_ik->major_version() < JAVA_1_5_VERSION &&
+ accessee_ik->major_version() < JAVA_1_5_VERSION)) {
+ return classloader_only &&
+ Verifier::relax_verify_for(accessor_ik->class_loader()) &&
+ accessor_ik->protection_domain() == accessee_ik->protection_domain() &&
+ accessor_ik->class_loader() == accessee_ik->class_loader();
+ } else {
+ return false;
+ }
+}
+
+bool Reflection::verify_field_access(klassOop current_class,
+ klassOop resolved_class,
+ klassOop field_class,
+ AccessFlags access,
+ bool classloader_only,
+ bool protected_restriction) {
+ // Verify that current_class can access a field of field_class, where that
+ // field's access bits are "access". We assume that we've already verified
+ // that current_class can access field_class.
+ //
+ // If the classloader_only flag is set, we automatically allow any accesses
+ // in which current_class doesn't have a classloader.
+ //
+ // "resolved_class" is the runtime type of "field_class". Sometimes we don't
+ // need this distinction (e.g. if all we have is the runtime type, or during
+ // class file parsing when we only care about the static type); in that case
+ // callers should ensure that resolved_class == field_class.
+ //
+ if ((current_class == NULL) ||
+ (current_class == field_class) ||
+ access.is_public()) {
+ return true;
+ }
+
+ if (access.is_protected()) {
+ if (!protected_restriction) {
+ // See if current_class is a subclass of field_class
+ if (Klass::cast(current_class)->is_subclass_of(field_class)) {
+ if (current_class == resolved_class ||
+ field_class == resolved_class ||
+ Klass::cast(current_class)->is_subclass_of(resolved_class) ||
+ Klass::cast(resolved_class)->is_subclass_of(current_class)) {
+ return true;
+ }
+ }
+ }
+ }
+
+ if (!access.is_private() && is_same_class_package(current_class, field_class)) {
+ return true;
+ }
+
+ // New (1.4) reflection implementation. Allow all accesses from
+ // sun/reflect/MagicAccessorImpl subclasses to succeed trivially.
+ if ( JDK_Version::is_gte_jdk14x_version()
+ && UseNewReflection
+ && Klass::cast(current_class)->is_subclass_of(SystemDictionary::reflect_magic_klass())) {
+ return true;
+ }
+
+ return can_relax_access_check_for(
+ current_class, field_class, classloader_only);
+}
+
+
+bool Reflection::is_same_class_package(klassOop class1, klassOop class2) {
+ return instanceKlass::cast(class1)->is_same_class_package(class2);
+}
+
+
+// Checks that the 'outer' klass has declared 'inner' as being an inner klass. If not,
+// throw an incompatible class change exception
+void Reflection::check_for_inner_class(instanceKlassHandle outer, instanceKlassHandle inner, TRAPS) {
+ const int inner_class_info_index = 0;
+ const int outer_class_info_index = 1;
+
+ typeArrayHandle icls (THREAD, outer->inner_classes());
+ constantPoolHandle cp (THREAD, outer->constants());
+ for(int i = 0; i < icls->length(); i += 4) {
+ int ioff = icls->ushort_at(i + inner_class_info_index);
+ int ooff = icls->ushort_at(i + outer_class_info_index);
+
+ if (ioff != 0 && ooff != 0) {
+ klassOop o = cp->klass_at(ooff, CHECK);
+ if (o == outer()) {
+ klassOop i = cp->klass_at(ioff, CHECK);
+ if (i == inner()) {
+ return;
+ }
+ }
+ }
+ }
+
+ // 'inner' not declared as an inner klass in outer
+ ResourceMark rm(THREAD);
+ Exceptions::fthrow(
+ THREAD_AND_LOCATION,
+ vmSymbolHandles::java_lang_IncompatibleClassChangeError(),
+ "%s and %s disagree on InnerClasses attribute",
+ outer->external_name(),
+ inner->external_name()
+ );
+}
+
+// Utility method converting a single SignatureStream element into java.lang.Class instance
+
+oop get_mirror_from_signature(methodHandle method, SignatureStream* ss, TRAPS) {
+ switch (ss->type()) {
+ default:
+ assert(ss->type() != T_VOID || ss->at_return_type(), "T_VOID should only appear as return type");
+ return java_lang_Class::primitive_mirror(ss->type());
+ case T_OBJECT:
+ case T_ARRAY:
+ symbolOop name = ss->as_symbol(CHECK_NULL);
+ oop loader = instanceKlass::cast(method->method_holder())->class_loader();
+ oop protection_domain = instanceKlass::cast(method->method_holder())->protection_domain();
+ klassOop k = SystemDictionary::resolve_or_fail(
+ symbolHandle(THREAD, name),
+ Handle(THREAD, loader),
+ Handle(THREAD, protection_domain),
+ true, CHECK_NULL);
+ if (TraceClassResolution) {
+ trace_class_resolution(k);
+ }
+ return k->klass_part()->java_mirror();
+ };
+}
+
+
+objArrayHandle Reflection::get_parameter_types(methodHandle method, int parameter_count, oop* return_type, TRAPS) {
+ // Allocate array holding parameter types (java.lang.Class instances)
+ objArrayOop m = oopFactory::new_objArray(SystemDictionary::class_klass(), parameter_count, CHECK_(objArrayHandle()));
+ objArrayHandle mirrors (THREAD, m);
+ int index = 0;
+ // Collect parameter types
+ symbolHandle signature (THREAD, method->signature());
+ SignatureStream ss(signature);
+ while (!ss.at_return_type()) {
+ oop mirror = get_mirror_from_signature(method, &ss, CHECK_(objArrayHandle()));
+ mirrors->obj_at_put(index++, mirror);
+ ss.next();
+ }
+ assert(index == parameter_count, "invalid parameter count");
+ if (return_type != NULL) {
+ // Collect return type as well
+ assert(ss.at_return_type(), "return type should be present");
+ *return_type = get_mirror_from_signature(method, &ss, CHECK_(objArrayHandle()));
+ }
+ return mirrors;
+}
+
+objArrayHandle Reflection::get_exception_types(methodHandle method, TRAPS) {
+ return method->resolved_checked_exceptions(CHECK_(objArrayHandle()));
+}
+
+
+Handle Reflection::new_type(symbolHandle signature, KlassHandle k, TRAPS) {
+ // Basic types
+ BasicType type = vmSymbols::signature_type(signature());
+ if (type != T_OBJECT) {
+ return Handle(THREAD, Universe::java_mirror(type));
+ }
+
+ oop loader = instanceKlass::cast(k())->class_loader();
+ oop protection_domain = Klass::cast(k())->protection_domain();
+ klassOop result = SystemDictionary::resolve_or_fail(signature,
+ Handle(THREAD, loader),
+ Handle(THREAD, protection_domain),
+ true, CHECK_(Handle()));
+
+ if (TraceClassResolution) {
+ trace_class_resolution(result);
+ }
+
+ oop nt = Klass::cast(result)->java_mirror();
+ return Handle(THREAD, nt);
+}
+
+
+oop Reflection::new_method(methodHandle method, bool intern_name, bool for_constant_pool_access, TRAPS) {
+ // In jdk1.2.x, getMethods on an interface erroneously includes <clinit>, thus the complicated assert.
+ // Also allow sun.reflect.ConstantPool to refer to <clinit> methods as java.lang.reflect.Methods.
+ assert(!method()->is_initializer() ||
+ (for_constant_pool_access && method()->is_static()) ||
+ (method()->name() == vmSymbols::class_initializer_name()
+ && Klass::cast(method()->method_holder())->is_interface() && JDK_Version::is_jdk12x_version()), "should call new_constructor instead");
+ instanceKlassHandle holder (THREAD, method->method_holder());
+ int slot = method->method_idnum();
+
+ symbolHandle signature (THREAD, method->signature());
+ int parameter_count = ArgumentCount(signature).size();
+ oop return_type_oop = NULL;
+ objArrayHandle parameter_types = get_parameter_types(method, parameter_count, &return_type_oop, CHECK_NULL);
+ if (parameter_types.is_null() || return_type_oop == NULL) return NULL;
+
+ Handle return_type(THREAD, return_type_oop);
+
+ objArrayHandle exception_types = get_exception_types(method, CHECK_NULL);
+
+ if (exception_types.is_null()) return NULL;
+
+ symbolHandle method_name(THREAD, method->name());
+ Handle name;
+ if (intern_name) {
+ // intern_name is only true with UseNewReflection
+ oop name_oop = StringTable::intern(method_name(), CHECK_NULL);
+ name = Handle(THREAD, name_oop);
+ } else {
+ name = java_lang_String::create_from_symbol(method_name, CHECK_NULL);
+ }
+ if (name.is_null()) return NULL;
+
+ int modifiers = method->access_flags().as_int() & JVM_RECOGNIZED_METHOD_MODIFIERS;
+
+ Handle mh = java_lang_reflect_Method::create(CHECK_NULL);
+
+ java_lang_reflect_Method::set_clazz(mh(), holder->java_mirror());
+ java_lang_reflect_Method::set_slot(mh(), slot);
+ java_lang_reflect_Method::set_name(mh(), name());
+ java_lang_reflect_Method::set_return_type(mh(), return_type());
+ java_lang_reflect_Method::set_parameter_types(mh(), parameter_types());
+ java_lang_reflect_Method::set_exception_types(mh(), exception_types());
+ java_lang_reflect_Method::set_modifiers(mh(), modifiers);
+ java_lang_reflect_Method::set_override(mh(), false);
+ if (java_lang_reflect_Method::has_signature_field() &&
+ method->generic_signature() != NULL) {
+ symbolHandle gs(THREAD, method->generic_signature());
+ Handle sig = java_lang_String::create_from_symbol(gs, CHECK_NULL);
+ java_lang_reflect_Method::set_signature(mh(), sig());
+ }
+ if (java_lang_reflect_Method::has_annotations_field()) {
+ java_lang_reflect_Method::set_annotations(mh(), method->annotations());
+ }
+ if (java_lang_reflect_Method::has_parameter_annotations_field()) {
+ java_lang_reflect_Method::set_parameter_annotations(mh(), method->parameter_annotations());
+ }
+ if (java_lang_reflect_Method::has_annotation_default_field()) {
+ java_lang_reflect_Method::set_annotation_default(mh(), method->annotation_default());
+ }
+ return mh();
+}
+
+
+oop Reflection::new_constructor(methodHandle method, TRAPS) {
+ assert(method()->is_initializer(), "should call new_method instead");
+
+ instanceKlassHandle holder (THREAD, method->method_holder());
+ int slot = method->method_idnum();
+
+ symbolHandle signature (THREAD, method->signature());
+ int parameter_count = ArgumentCount(signature).size();
+ objArrayHandle parameter_types = get_parameter_types(method, parameter_count, NULL, CHECK_NULL);
+ if (parameter_types.is_null()) return NULL;
+
+ objArrayHandle exception_types = get_exception_types(method, CHECK_NULL);
+ if (exception_types.is_null()) return NULL;
+
+ int modifiers = method->access_flags().as_int() & JVM_RECOGNIZED_METHOD_MODIFIERS;
+
+ Handle ch = java_lang_reflect_Constructor::create(CHECK_NULL);
+
+ java_lang_reflect_Constructor::set_clazz(ch(), holder->java_mirror());
+ java_lang_reflect_Constructor::set_slot(ch(), slot);
+ java_lang_reflect_Constructor::set_parameter_types(ch(), parameter_types());
+ java_lang_reflect_Constructor::set_exception_types(ch(), exception_types());
+ java_lang_reflect_Constructor::set_modifiers(ch(), modifiers);
+ java_lang_reflect_Constructor::set_override(ch(), false);
+ if (java_lang_reflect_Constructor::has_signature_field() &&
+ method->generic_signature() != NULL) {
+ symbolHandle gs(THREAD, method->generic_signature());
+ Handle sig = java_lang_String::create_from_symbol(gs, CHECK_NULL);
+ java_lang_reflect_Constructor::set_signature(ch(), sig());
+ }
+ if (java_lang_reflect_Constructor::has_annotations_field()) {
+ java_lang_reflect_Constructor::set_annotations(ch(), method->annotations());
+ }
+ if (java_lang_reflect_Constructor::has_parameter_annotations_field()) {
+ java_lang_reflect_Constructor::set_parameter_annotations(ch(), method->parameter_annotations());
+ }
+ return ch();
+}
+
+
+oop Reflection::new_field(fieldDescriptor* fd, bool intern_name, TRAPS) {
+ symbolHandle field_name(THREAD, fd->name());
+ Handle name;
+ if (intern_name) {
+ // intern_name is only true with UseNewReflection
+ oop name_oop = StringTable::intern(field_name(), CHECK_NULL);
+ name = Handle(THREAD, name_oop);
+ } else {
+ name = java_lang_String::create_from_symbol(field_name, CHECK_NULL);
+ }
+ symbolHandle signature (THREAD, fd->signature());
+ KlassHandle holder (THREAD, fd->field_holder());
+ Handle type = new_type(signature, holder, CHECK_NULL);
+ Handle rh = java_lang_reflect_Field::create(CHECK_NULL);
+
+ java_lang_reflect_Field::set_clazz(rh(), Klass::cast(fd->field_holder())->java_mirror());
+ java_lang_reflect_Field::set_slot(rh(), fd->index());
+ java_lang_reflect_Field::set_name(rh(), name());
+ java_lang_reflect_Field::set_type(rh(), type());
+ // Note the ACC_ANNOTATION bit, which is a per-class access flag, is never set here.
+ java_lang_reflect_Field::set_modifiers(rh(), fd->access_flags().as_int() & JVM_RECOGNIZED_FIELD_MODIFIERS);
+ java_lang_reflect_Field::set_override(rh(), false);
+ if (java_lang_reflect_Field::has_signature_field() &&
+ fd->generic_signature() != NULL) {
+ symbolHandle gs(THREAD, fd->generic_signature());
+ Handle sig = java_lang_String::create_from_symbol(gs, CHECK_NULL);
+ java_lang_reflect_Field::set_signature(rh(), sig());
+ }
+ if (java_lang_reflect_Field::has_annotations_field()) {
+ java_lang_reflect_Field::set_annotations(rh(), fd->annotations());
+ }
+ return rh();
+}
+
+
+//---------------------------------------------------------------------------
+//
+// Supporting routines for old native code-based reflection (pre-JDK 1.4).
+//
+// See reflection.hpp for details.
+//
+//---------------------------------------------------------------------------
+
+#ifdef SUPPORT_OLD_REFLECTION
+
+methodHandle Reflection::resolve_interface_call(instanceKlassHandle klass, methodHandle method,
+ KlassHandle recv_klass, Handle receiver, TRAPS) {
+ assert(!method.is_null() , "method should not be null");
+
+ CallInfo info;
+ symbolHandle signature (THREAD, method->signature());
+ symbolHandle name (THREAD, method->name());
+ LinkResolver::resolve_interface_call(info, receiver, recv_klass, klass,
+ name, signature,
+ KlassHandle(), false, true,
+ CHECK_(methodHandle()));
+ return info.selected_method();
+}
+
+
+oop Reflection::invoke(instanceKlassHandle klass, methodHandle reflected_method,
+ Handle receiver, bool override, objArrayHandle ptypes,
+ BasicType rtype, objArrayHandle args, bool is_method_invoke, TRAPS) {
+ ResourceMark rm(THREAD);
+
+ methodHandle method; // actual method to invoke
+ KlassHandle target_klass; // target klass, receiver's klass for non-static
+
+ // Ensure klass is initialized
+ klass->initialize(CHECK_NULL);
+
+ bool is_static = reflected_method->is_static();
+ if (is_static) {
+ // ignore receiver argument
+ method = reflected_method;
+ target_klass = klass;
+ } else {
+ // check for null receiver
+ if (receiver.is_null()) {
+ THROW_0(vmSymbols::java_lang_NullPointerException());
+ }
+ // Check class of receiver against class declaring method
+ if (!receiver->is_a(klass())) {
+ THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "object is not an instance of declaring class");
+ }
+ // target klass is receiver's klass
+ target_klass = KlassHandle(THREAD, receiver->klass());
+ // no need to resolve if method is private or <init>
+ if (reflected_method->is_private() || reflected_method->name() == vmSymbols::object_initializer_name()) {
+ method = reflected_method;
+ } else {
+ // resolve based on the receiver
+ if (instanceKlass::cast(reflected_method->method_holder())->is_interface()) {
+ // resolve interface call
+ if (ReflectionWrapResolutionErrors) {
+ // new default: 6531596
+ // Match resolution errors with those thrown due to reflection inlining
+ // Linktime resolution & IllegalAccessCheck already done by Class.getMethod()
+ method = resolve_interface_call(klass, reflected_method, target_klass, receiver, THREAD);
+ if (HAS_PENDING_EXCEPTION) {
+ // Method resolution threw an exception; wrap it in an InvocationTargetException
+ oop resolution_exception = PENDING_EXCEPTION;
+ CLEAR_PENDING_EXCEPTION;
+ JavaCallArguments args(Handle(THREAD, resolution_exception));
+ THROW_ARG_0(vmSymbolHandles::java_lang_reflect_InvocationTargetException(),
+ vmSymbolHandles::throwable_void_signature(),
+ &args);
+ }
+ } else {
+ method = resolve_interface_call(klass, reflected_method, target_klass, receiver, CHECK_(NULL));
+ }
+ } else {
+ // if the method can be overridden, we resolve using the vtable index.
+ int index = reflected_method->vtable_index();
+ method = reflected_method;
+ if (index != methodOopDesc::nonvirtual_vtable_index) {
+ // target_klass might be an arrayKlassOop but all vtables start at
+ // the same place. The cast is to avoid virtual call and assertion.
+ instanceKlass* inst = (instanceKlass*)target_klass()->klass_part();
+ method = methodHandle(THREAD, inst->method_at_vtable(index));
+ }
+ if (!method.is_null()) {
+ // Check for abstract methods as well
+ if (method->is_abstract()) {
+ // new default: 6531596
+ if (ReflectionWrapResolutionErrors) {
+ ResourceMark rm(THREAD);
+ Handle h_origexception = Exceptions::new_exception(THREAD,
+ vmSymbols::java_lang_AbstractMethodError(),
+ methodOopDesc::name_and_sig_as_C_string(Klass::cast(target_klass()),
+ method->name(),
+ method->signature()));
+ JavaCallArguments args(h_origexception);
+ THROW_ARG_0(vmSymbolHandles::java_lang_reflect_InvocationTargetException(),
+ vmSymbolHandles::throwable_void_signature(),
+ &args);
+ } else {
+ ResourceMark rm(THREAD);
+ THROW_MSG_0(vmSymbols::java_lang_AbstractMethodError(),
+ methodOopDesc::name_and_sig_as_C_string(Klass::cast(target_klass()),
+ method->name(),
+ method->signature()));
+ }
+ }
+ }
+ }
+ }
+ }
+
+ // I believe this is a ShouldNotGetHere case which requires
+ // an internal vtable bug. If you ever get this please let Karen know.
+ if (method.is_null()) {
+ ResourceMark rm(THREAD);
+ THROW_MSG_0(vmSymbols::java_lang_NoSuchMethodError(),
+ methodOopDesc::name_and_sig_as_C_string(Klass::cast(klass()),
+ reflected_method->name(),
+ reflected_method->signature()));
+ }
+
+ // In the JDK 1.4 reflection implementation, the security check is
+ // done at the Java level
+ if (!(JDK_Version::is_gte_jdk14x_version() && UseNewReflection)) {
+
+ // Access checking (unless overridden by Method)
+ if (!override) {
+ if (!(klass->is_public() && reflected_method->is_public())) {
+ bool access = Reflection::reflect_check_access(klass(), reflected_method->access_flags(), target_klass(), is_method_invoke, CHECK_NULL);
+ if (!access) {
+ return NULL; // exception
+ }
+ }
+ }
+
+ } // !(Universe::is_gte_jdk14x_version() && UseNewReflection)
+
+ assert(ptypes->is_objArray(), "just checking");
+ int args_len = args.is_null() ? 0 : args->length();
+ // Check number of arguments
+ if (ptypes->length() != args_len) {
+ THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "wrong number of arguments");
+ }
+
+ // Create object to contain parameters for the JavaCall
+ JavaCallArguments java_args(method->size_of_parameters());
+
+ if (!is_static) {
+ java_args.push_oop(receiver);
+ }
+
+ for (int i = 0; i < args_len; i++) {
+ oop type_mirror = ptypes->obj_at(i);
+ oop arg = args->obj_at(i);
+ if (java_lang_Class::is_primitive(type_mirror)) {
+ jvalue value;
+ BasicType ptype = basic_type_mirror_to_basic_type(type_mirror, CHECK_NULL);
+ BasicType atype = unbox_for_primitive(arg, &value, CHECK_NULL);
+ if (ptype != atype) {
+ widen(&value, atype, ptype, CHECK_NULL);
+ }
+ switch (ptype) {
+ case T_BOOLEAN: java_args.push_int(value.z); break;
+ case T_CHAR: java_args.push_int(value.c); break;
+ case T_BYTE: java_args.push_int(value.b); break;
+ case T_SHORT: java_args.push_int(value.s); break;
+ case T_INT: java_args.push_int(value.i); break;
+ case T_LONG: java_args.push_long(value.j); break;
+ case T_FLOAT: java_args.push_float(value.f); break;
+ case T_DOUBLE: java_args.push_double(value.d); break;
+ default:
+ THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "argument type mismatch");
+ }
+ } else {
+ if (arg != NULL) {
+ klassOop k = java_lang_Class::as_klassOop(type_mirror);
+ if (!arg->is_a(k)) {
+ THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "argument type mismatch");
+ }
+ }
+ Handle arg_handle(THREAD, arg); // Create handle for argument
+ java_args.push_oop(arg_handle); // Push handle
+ }
+ }
+
+ assert(java_args.size_of_parameters() == method->size_of_parameters(), "just checking");
+
+ // All oops (including receiver) is passed in as Handles. An potential oop is returned as an
+ // oop (i.e., NOT as an handle)
+ JavaValue result(rtype);
+ JavaCalls::call(&result, method, &java_args, THREAD);
+
+ if (HAS_PENDING_EXCEPTION) {
+ // Method threw an exception; wrap it in an InvocationTargetException
+ oop target_exception = PENDING_EXCEPTION;
+ CLEAR_PENDING_EXCEPTION;
+ JavaCallArguments args(Handle(THREAD, target_exception));
+ THROW_ARG_0(vmSymbolHandles::java_lang_reflect_InvocationTargetException(),
+ vmSymbolHandles::throwable_void_signature(),
+ &args);
+ } else {
+ if (rtype == T_BOOLEAN || rtype == T_BYTE || rtype == T_CHAR || rtype == T_SHORT)
+ narrow((jvalue*) result.get_value_addr(), rtype, CHECK_NULL);
+ return box((jvalue*) result.get_value_addr(), rtype, CHECK_NULL);
+ }
+}
+
+
+void Reflection::narrow(jvalue* value, BasicType narrow_type, TRAPS) {
+ switch (narrow_type) {
+ case T_BOOLEAN:
+ value->z = (jboolean) value->i;
+ return;
+ case T_BYTE:
+ value->b = (jbyte) value->i;
+ return;
+ case T_CHAR:
+ value->c = (jchar) value->i;
+ return;
+ case T_SHORT:
+ value->s = (jshort) value->i;
+ return;
+ default:
+ break; // fail
+ }
+ THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "argument type mismatch");
+}
+
+
+BasicType Reflection::basic_type_mirror_to_basic_type(oop basic_type_mirror, TRAPS) {
+ assert(java_lang_Class::is_primitive(basic_type_mirror), "just checking");
+ return java_lang_Class::primitive_type(basic_type_mirror);
+}
+
+
+bool Reflection::match_parameter_types(methodHandle method, objArrayHandle types, int parameter_count, TRAPS) {
+ int types_len = types.is_null() ? 0 : types->length();
+ if (types_len != parameter_count) return false;
+ if (parameter_count > 0) {
+ objArrayHandle method_types = get_parameter_types(method, parameter_count, NULL, CHECK_false);
+ for (int index = 0; index < parameter_count; index++) {
+ if (types->obj_at(index) != method_types->obj_at(index)) {
+ return false;
+ }
+ }
+ }
+ return true;
+}
+
+
+oop Reflection::new_field(FieldStream* st, TRAPS) {
+ symbolHandle field_name(THREAD, st->name());
+ Handle name = java_lang_String::create_from_symbol(field_name, CHECK_NULL);
+ symbolHandle signature(THREAD, st->signature());
+ Handle type = new_type(signature, st->klass(), CHECK_NULL);
+ Handle rh = java_lang_reflect_Field::create(CHECK_NULL);
+ oop result = rh();
+
+ java_lang_reflect_Field::set_clazz(result, st->klass()->java_mirror());
+ java_lang_reflect_Field::set_slot(result, st->index());
+ java_lang_reflect_Field::set_name(result, name());
+ java_lang_reflect_Field::set_type(result, type());
+ // Note the ACC_ANNOTATION bit, which is a per-class access flag, is never set here.
+ java_lang_reflect_Field::set_modifiers(result, st->access_flags().as_int() & JVM_RECOGNIZED_FIELD_MODIFIERS);
+ java_lang_reflect_Field::set_override(result, false);
+ return result;
+}
+
+
+bool Reflection::resolve_field(Handle field_mirror, Handle& receiver, fieldDescriptor* fd, bool check_final, TRAPS) {
+ if (field_mirror.is_null()) {
+ THROW_(vmSymbols::java_lang_NullPointerException(), false);
+ }
+
+ instanceKlassHandle klass (THREAD, java_lang_Class::as_klassOop(java_lang_reflect_Field::clazz(field_mirror())));
+ int slot = java_lang_reflect_Field::slot(field_mirror());
+
+ // Ensure klass is initialized
+ klass->initialize(CHECK_false);
+ fd->initialize(klass(), slot);
+
+ bool is_static = fd->is_static();
+ KlassHandle receiver_klass;
+
+ if (is_static) {
+ receiver = KlassHandle(THREAD, klass());
+ receiver_klass = klass;
+ } else {
+ // Check object is a non-null instance of declaring class
+ if (receiver.is_null()) {
+ THROW_(vmSymbols::java_lang_NullPointerException(), false);
+ }
+ if (!receiver->is_a(klass())) {
+ THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), "object is not an instance of declaring class", false);
+ }
+ receiver_klass = KlassHandle(THREAD, receiver->klass());
+ }
+
+ // Access checking (unless overridden by Field)
+ if (!java_lang_reflect_Field::override(field_mirror())) {
+ if (!(klass->is_public() && fd->is_public())) {
+ bool access_check = reflect_check_access(klass(), fd->access_flags(), receiver_klass(), false, CHECK_false);
+ if (!access_check) {
+ return false; // exception
+ }
+ }
+ }
+
+ if (check_final && fd->is_final()) {
+ // In 1.3 we always throw an error when attempting to set a final field.
+ // In 1.2.x, this was allowed in the override bit was set by calling Field.setAccessible(true).
+ // We currently maintain backwards compatibility. See bug 4250960.
+ bool strict_final_check = !JDK_Version::is_jdk12x_version();
+ if (strict_final_check || !java_lang_reflect_Field::override(field_mirror())) {
+ THROW_MSG_(vmSymbols::java_lang_IllegalAccessException(), "field is final", false);
+ }
+ }
+ return true;
+}
+
+
+BasicType Reflection::field_get(jvalue* value, fieldDescriptor* fd, Handle receiver) {
+ BasicType field_type = fd->field_type();
+ int offset = fd->offset();
+ switch (field_type) {
+ case T_BOOLEAN:
+ value->z = receiver->bool_field(offset);
+ break;
+ case T_CHAR:
+ value->c = receiver->char_field(offset);
+ break;
+ case T_FLOAT:
+ value->f = receiver->float_field(offset);
+ break;
+ case T_DOUBLE:
+ value->d = receiver->double_field(offset);
+ break;
+ case T_BYTE:
+ value->b = receiver->byte_field(offset);
+ break;
+ case T_SHORT:
+ value->s = receiver->short_field(offset);
+ break;
+ case T_INT:
+ value->i = receiver->int_field(offset);
+ break;
+ case T_LONG:
+ value->j = receiver->long_field(offset);
+ break;
+ case T_OBJECT:
+ case T_ARRAY:
+ value->l = (jobject) receiver->obj_field(offset);
+ break;
+ default:
+ return T_ILLEGAL;
+ }
+ return field_type;
+}
+
+
+void Reflection::field_set(jvalue* value, fieldDescriptor* fd, Handle receiver, BasicType value_type, TRAPS) {
+ BasicType field_type = fd->field_type();
+ if (field_type != value_type) {
+ widen(value, value_type, field_type, CHECK);
+ }
+
+ int offset = fd->offset();
+ switch (field_type) {
+ case T_BOOLEAN:
+ receiver->bool_field_put(offset, value->z);
+ break;
+ case T_CHAR:
+ receiver->char_field_put(offset, value->c);
+ break;
+ case T_FLOAT:
+ receiver->float_field_put(offset, value->f);
+ break;
+ case T_DOUBLE:
+ receiver->double_field_put(offset, value->d);
+ break;
+ case T_BYTE:
+ receiver->byte_field_put(offset, value->b);
+ break;
+ case T_SHORT:
+ receiver->short_field_put(offset, value->s);
+ break;
+ case T_INT:
+ receiver->int_field_put(offset, value->i);
+ break;
+ case T_LONG:
+ receiver->long_field_put(offset, value->j);
+ break;
+ case T_OBJECT:
+ case T_ARRAY: {
+ Handle obj(THREAD, (oop) value->l);
+ if (obj.not_null()) {
+ symbolHandle signature(THREAD, fd->signature());
+ Handle loader (THREAD, fd->loader());
+ Handle protect (THREAD, Klass::cast(fd->field_holder())->protection_domain());
+ klassOop k = SystemDictionary::resolve_or_fail(signature, loader, protect, true, CHECK); // may block
+ if (!obj->is_a(k)) {
+ THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "field type mismatch");
+ }
+ }
+ receiver->obj_field_put(offset, obj());
+ break;
+ }
+ default:
+ THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "field type mismatch");
+ }
+}
+
+
+oop Reflection::reflect_field(oop mirror, symbolOop field_name, jint which, TRAPS) {
+ // Exclude primitive types and array types
+ if (java_lang_Class::is_primitive(mirror)) return NULL;
+ if (Klass::cast(java_lang_Class::as_klassOop(mirror))->oop_is_array()) return NULL;
+
+ instanceKlassHandle k(THREAD, java_lang_Class::as_klassOop(mirror));
+ bool local_fields_only = (which == DECLARED);
+
+ // Ensure class is linked
+ k->link_class(CHECK_NULL);
+
+ // Search class and interface fields
+ for (FieldStream st(k, local_fields_only, false); !st.eos(); st.next()) {
+ if (st.name() == field_name) {
+ if (local_fields_only || st.access_flags().is_public()) {
+ return new_field(&st, THREAD);
+ }
+ }
+ }
+
+ return NULL;
+}
+
+
+objArrayOop Reflection::reflect_fields(oop mirror, jint which, TRAPS) {
+ // Exclude primitive types and array types
+ if (java_lang_Class::is_primitive(mirror)
+ || Klass::cast(java_lang_Class::as_klassOop(mirror))->oop_is_array()) {
+ symbolHandle name = vmSymbolHandles::java_lang_reflect_Field();
+ klassOop klass = SystemDictionary::resolve_or_fail(name, true, CHECK_NULL);
+ return oopFactory::new_objArray(klass, 0, CHECK_NULL); // Return empty array
+ }
+
+ instanceKlassHandle k(THREAD, java_lang_Class::as_klassOop(mirror));
+
+ // Ensure class is linked
+ k->link_class(CHECK_NULL);
+
+ bool local_fields_only = (which == DECLARED);
+ int count = 0;
+ { // Compute fields count for class and interface fields
+ for (FieldStream st(k, local_fields_only, false); !st.eos(); st.next()) {
+ if (local_fields_only || st.access_flags().is_public()) {
+ count++;
+ }
+ }
+ }
+
+ // Allocate result
+ symbolHandle name = vmSymbolHandles::java_lang_reflect_Field();
+ klassOop klass = SystemDictionary::resolve_or_fail(name, true, CHECK_NULL);
+ objArrayOop r = oopFactory::new_objArray(klass, count, CHECK_NULL);
+ objArrayHandle result (THREAD, r);
+
+ // Fill in results backwards
+ {
+ for (FieldStream st(k, local_fields_only, false); !st.eos(); st.next()) {
+ if (local_fields_only || st.access_flags().is_public()) {
+ oop field = new_field(&st, CHECK_NULL);
+ result->obj_at_put(--count, field);
+ }
+ }
+ assert(count == 0, "just checking");
+ }
+ return result();
+}
+
+
+oop Reflection::reflect_method(oop mirror, symbolHandle method_name, objArrayHandle types, jint which, TRAPS) {
+ if (java_lang_Class::is_primitive(mirror)) return NULL;
+ klassOop klass = java_lang_Class::as_klassOop(mirror);
+ if (Klass::cast(klass)->oop_is_array() && which == MEMBER_DECLARED) return NULL;
+
+ if (Klass::cast(java_lang_Class::as_klassOop(mirror))->oop_is_array()) {
+ klass = SystemDictionary::object_klass();
+ }
+ instanceKlassHandle h_k(THREAD, klass);
+
+ // Ensure klass is linked (need not be initialized)
+ h_k->link_class(CHECK_NULL);
+
+ // For interfaces include static initializers under jdk1.2.x (since classic does that)
+ bool include_clinit = JDK_Version::is_jdk12x_version() && h_k->is_interface();
+
+ switch (which) {
+ case MEMBER_PUBLIC:
+ // First the public non-static methods (works if method holder is an interface)
+ // Note that we can ignore checks for overridden methods, since we go up the hierarchy.
+ {
+ for (MethodStream st(h_k, false, false); !st.eos(); st.next()) {
+ methodHandle m(THREAD, st.method());
+ // For interfaces include static initializers since classic does that!
+ if (method_name() == m->name() && (include_clinit || (m->is_public() && !m->is_static() && !m->is_initializer()))) {
+ symbolHandle signature(THREAD, m->signature());
+ bool parameter_match = match_parameter_types(m, types, ArgumentCount(signature).size(), CHECK_NULL);
+ if (parameter_match) {
+ return new_method(m, false, false, THREAD);
+ }
+ }
+ }
+ }
+ // Then the public static methods (works if method holder is an interface)
+ {
+ for (MethodStream st(h_k, false, false); !st.eos(); st.next()) {
+ methodHandle m(THREAD, st.method());
+ if (method_name() == m->name() && m->is_public() && m->is_static() && !m->is_initializer()) {
+ symbolHandle signature(THREAD, m->signature());
+ bool parameter_match = match_parameter_types(m, types, ArgumentCount(signature).size(), CHECK_NULL);
+ if (parameter_match) {
+ return new_method(m, false, false, THREAD);
+ }
+ }
+ }
+ }
+ break;
+ case MEMBER_DECLARED:
+ // All local methods
+ {
+ for (MethodStream st(h_k, true, true); !st.eos(); st.next()) {
+ methodHandle m(THREAD, st.method());
+ if (method_name() == m->name() && !m->is_initializer()) {
+ symbolHandle signature(THREAD, m->signature());
+ bool parameter_match = match_parameter_types(m, types, ArgumentCount(signature).size(), CHECK_NULL);
+ if (parameter_match) {
+ return new_method(m, false, false, THREAD);
+ }
+ }
+ }
+ }
+ break;
+ default:
+ break;
+ }
+ return NULL;
+}
+
+
+objArrayOop Reflection::reflect_methods(oop mirror, jint which, TRAPS) {
+ // Exclude primitive types
+ if (java_lang_Class::is_primitive(mirror) ||
+ (Klass::cast(java_lang_Class::as_klassOop(mirror))->oop_is_array() && (which == MEMBER_DECLARED))) {
+ klassOop klass = SystemDictionary::reflect_method_klass();
+ return oopFactory::new_objArray(klass, 0, CHECK_NULL); // Return empty array
+ }
+
+ klassOop klass = java_lang_Class::as_klassOop(mirror);
+ if (Klass::cast(java_lang_Class::as_klassOop(mirror))->oop_is_array()) {
+ klass = SystemDictionary::object_klass();
+ }
+ instanceKlassHandle h_k(THREAD, klass);
+
+ // Ensure klass is linked (need not be initialized)
+ h_k->link_class(CHECK_NULL);
+
+ // We search the (super)interfaces only if h_k is an interface itself
+ bool is_interface = h_k->is_interface();
+
+ // For interfaces include static initializers under jdk1.2.x (since classic does that)
+ bool include_clinit = JDK_Version::is_jdk12x_version() && is_interface;
+
+ switch (which) {
+ case MEMBER_PUBLIC:
+ {
+
+ // Count public methods (non-static and static)
+ int count = 0;
+ {
+ for (MethodStream st(h_k, false, false); !st.eos(); st.next()) {
+ methodOop m = st.method();
+ // For interfaces include static initializers since classic does that!
+ if (include_clinit || (!m->is_initializer() && m->is_public() && !m->is_overridden_in(h_k()))) {
+ count++;
+ }
+ }
+ }
+
+ // Allocate result
+ klassOop klass = SystemDictionary::reflect_method_klass();
+ objArrayOop r = oopFactory::new_objArray(klass, count, CHECK_NULL);
+ objArrayHandle h_result (THREAD, r);
+
+ // Fill in results backwards
+ {
+ // First the non-static public methods
+ for (MethodStream st(h_k, false, false); !st.eos(); st.next()) {
+ methodHandle m (THREAD, st.method());
+ if (!m->is_static() && !m->is_initializer() && m->is_public() && !m->is_overridden_in(h_k())) {
+ oop method = new_method(m, false, false, CHECK_NULL);
+ if (method == NULL) {
+ return NULL;
+ } else {
+ h_result->obj_at_put(--count, method);
+ }
+ }
+ }
+ }
+ {
+ // Then the static public methods
+ for (MethodStream st(h_k, false, !is_interface); !st.eos(); st.next()) {
+ methodHandle m (THREAD, st.method());
+ if (m->is_static() && (include_clinit || (!m->is_initializer()) && m->is_public() && !m->is_overridden_in(h_k()))) {
+ oop method = new_method(m, false, false, CHECK_NULL);
+ if (method == NULL) {
+ return NULL;
+ } else {
+ h_result->obj_at_put(--count, method);
+ }
+ }
+ }
+ }
+
+ assert(count == 0, "just checking");
+ return h_result();
+ }
+
+ case MEMBER_DECLARED:
+ {
+ // Count all methods
+ int count = 0;
+ {
+ for (MethodStream st(h_k, true, !is_interface); !st.eos(); st.next()) {
+ methodOop m = st.method();
+ if (!m->is_initializer()) {
+ count++;
+ }
+ }
+ }
+ // Allocate result
+ klassOop klass = SystemDictionary::reflect_method_klass();
+ objArrayOop r = oopFactory::new_objArray(klass, count, CHECK_NULL);
+ objArrayHandle h_result (THREAD, r);
+
+ // Fill in results backwards
+ {
+ for (MethodStream st(h_k, true, true); !st.eos(); st.next()) {
+ methodHandle m (THREAD, st.method());
+ if (!m->is_initializer()) {
+ oop method = new_method(m, false, false, CHECK_NULL);
+ if (method == NULL) {
+ return NULL;
+ } else {
+ h_result->obj_at_put(--count, method);
+ }
+ }
+ }
+ }
+ assert(count == 0, "just checking");
+ return h_result();
+ }
+ }
+ ShouldNotReachHere();
+ return NULL;
+}
+
+
+oop Reflection::reflect_constructor(oop mirror, objArrayHandle types, jint which, TRAPS) {
+
+ // Exclude primitive, interface and array types
+ bool prim = java_lang_Class::is_primitive(mirror);
+ Klass* klass = prim ? NULL : Klass::cast(java_lang_Class::as_klassOop(mirror));
+ if (prim || klass->is_interface() || klass->oop_is_array()) return NULL;
+
+ // Must be instance klass
+ instanceKlassHandle h_k(THREAD, java_lang_Class::as_klassOop(mirror));
+
+ // Ensure klass is linked (need not be initialized)
+ h_k->link_class(CHECK_NULL);
+
+ bool local_only = (which == MEMBER_DECLARED);
+ for (MethodStream st(h_k, true, true); !st.eos(); st.next()) {
+ methodHandle m(THREAD, st.method());
+ if (m->name() == vmSymbols::object_initializer_name() && (local_only || m->is_public())) {
+ symbolHandle signature(THREAD, m->signature());
+ bool parameter_match = match_parameter_types(m, types, ArgumentCount(signature).size(), CHECK_NULL);
+ if (parameter_match) {
+ return new_constructor(m, THREAD);
+ }
+ }
+ }
+
+ return NULL;
+}
+
+
+objArrayOop Reflection::reflect_constructors(oop mirror, jint which, TRAPS) {
+ // Exclude primitive, interface and array types
+ bool prim = java_lang_Class::is_primitive(mirror);
+ Klass* k = prim ? NULL : Klass::cast(java_lang_Class::as_klassOop(mirror));
+ if (prim || k->is_interface() || k->oop_is_array()) {
+ return oopFactory::new_objArray(SystemDictionary::reflect_constructor_klass(), 0, CHECK_NULL); // Return empty array
+ }
+
+ // Must be instanceKlass at this point
+ instanceKlassHandle h_k(THREAD, java_lang_Class::as_klassOop(mirror));
+
+ // Ensure klass is linked (need not be initialized)
+ h_k->link_class(CHECK_NULL);
+
+ bool local_only = (which == MEMBER_DECLARED);
+ int count = 0;
+ {
+ for (MethodStream st(h_k, true, true); !st.eos(); st.next()) {
+ methodOop m = st.method();
+ if (m->name() == vmSymbols::object_initializer_name() && (local_only || m->is_public())) {
+ count++;
+ }
+ }
+ }
+
+ // Allocate result
+ symbolHandle name = vmSymbolHandles::java_lang_reflect_Constructor();
+ klassOop klass = SystemDictionary::resolve_or_fail(name, true, CHECK_NULL);
+ objArrayOop r = oopFactory::new_objArray(klass, count, CHECK_NULL);
+ objArrayHandle h_result (THREAD, r);
+
+ // Fill in results backwards
+ {
+ for (MethodStream st(h_k, true, true); !st.eos(); st.next()) {
+ methodHandle m (THREAD, st.method());
+ if (m->name() == vmSymbols::object_initializer_name() && (local_only || m->is_public())) {
+ oop constr = new_constructor(m, CHECK_NULL);
+ if (constr == NULL) {
+ return NULL;
+ } else {
+ h_result->obj_at_put(--count, constr);
+ }
+ }
+ }
+ assert(count == 0, "just checking");
+ }
+ return h_result();
+}
+
+
+// This would be nicer if, say, java.lang.reflect.Method was a subclass
+// of java.lang.reflect.Constructor
+
+oop Reflection::invoke_method(oop method_mirror, Handle receiver, objArrayHandle args, TRAPS) {
+ oop mirror = java_lang_reflect_Method::clazz(method_mirror);
+ int slot = java_lang_reflect_Method::slot(method_mirror);
+ bool override = java_lang_reflect_Method::override(method_mirror) != 0;
+ objArrayHandle ptypes(THREAD, objArrayOop(java_lang_reflect_Method::parameter_types(method_mirror)));
+
+ oop return_type_mirror = java_lang_reflect_Method::return_type(method_mirror);
+ BasicType rtype;
+ if (java_lang_Class::is_primitive(return_type_mirror)) {
+ rtype = basic_type_mirror_to_basic_type(return_type_mirror, CHECK_NULL);
+ } else {
+ rtype = T_OBJECT;
+ }
+
+ instanceKlassHandle klass(THREAD, java_lang_Class::as_klassOop(mirror));
+ if (!klass->methods()->is_within_bounds(slot)) {
+ THROW_MSG_0(vmSymbols::java_lang_InternalError(), "invoke");
+ }
+ methodHandle method(THREAD, methodOop(klass->methods()->obj_at(slot)));
+
+ return invoke(klass, method, receiver, override, ptypes, rtype, args, true, THREAD);
+}
+
+
+oop Reflection::invoke_constructor(oop constructor_mirror, objArrayHandle args, TRAPS) {
+ oop mirror = java_lang_reflect_Constructor::clazz(constructor_mirror);
+ int slot = java_lang_reflect_Constructor::slot(constructor_mirror);
+ bool override = java_lang_reflect_Constructor::override(constructor_mirror) != 0;
+ objArrayHandle ptypes(THREAD, objArrayOop(java_lang_reflect_Constructor::parameter_types(constructor_mirror)));
+
+ instanceKlassHandle klass(THREAD, java_lang_Class::as_klassOop(mirror));
+ if (!klass->methods()->is_within_bounds(slot)) {
+ THROW_MSG_0(vmSymbols::java_lang_InternalError(), "invoke");
+ }
+ methodHandle method(THREAD, methodOop(klass->methods()->obj_at(slot)));
+ assert(method->name() == vmSymbols::object_initializer_name(), "invalid constructor");
+
+ // Make sure klass gets initialize
+ klass->initialize(CHECK_NULL);
+
+ // Create new instance (the receiver)
+ klass->check_valid_for_instantiation(false, CHECK_NULL);
+ Handle receiver = klass->allocate_instance_handle(CHECK_NULL);
+
+ // Ignore result from call and return receiver
+ invoke(klass, method, receiver, override, ptypes, T_VOID, args, false, CHECK_NULL);
+ return receiver();
+}
+
+
+#endif /* SUPPORT_OLD_REFLECTION */