8025580: Temporary flags: UseNewReflection and ReflectionWrapResolutionErrors
Summary: The fix removes all UseNewReflection/ReflectionWrapResolutionErrors occurrences/logic and adds them into the list of obsolete_jvm_flags in arguments.cpp.
Reviewed-by: coleenp, hseigel
Contributed-by: ygaevsky@azulsystems.com
--- a/hotspot/src/share/vm/classfile/systemDictionary.cpp Thu May 15 10:44:20 2014 -0700
+++ b/hotspot/src/share/vm/classfile/systemDictionary.cpp Thu May 15 17:38:50 2014 -0400
@@ -604,7 +604,6 @@
Ticks class_load_start_time = Ticks::now();
- // UseNewReflection
// Fix for 4474172; see evaluation for more details
class_loader = Handle(THREAD, java_lang_ClassLoader::non_reflection_class_loader(class_loader()));
ClassLoaderData *loader_data = register_loader(class_loader, CHECK_NULL);
@@ -898,7 +897,6 @@
Handle protection_domain,
TRAPS) {
- // UseNewReflection
// The result of this call should be consistent with the result
// of the call to resolve_instance_class_or_null().
// See evaluation 6790209 and 4474172 for more details.
--- a/hotspot/src/share/vm/classfile/systemDictionary.hpp Thu May 15 10:44:20 2014 -0700
+++ b/hotspot/src/share/vm/classfile/systemDictionary.hpp Thu May 15 17:38:50 2014 -0400
@@ -390,7 +390,7 @@
return k;
}
static Klass* check_klass_Opt_Only_JDK14NewRef(Klass* k) {
- assert(JDK_Version::is_gte_jdk14x_version() && UseNewReflection, "JDK 1.4 only");
+ assert(JDK_Version::is_gte_jdk14x_version(), "JDK 1.4 only");
// despite the optional loading, if you use this it must be present:
return check_klass(k);
}
--- a/hotspot/src/share/vm/classfile/verifier.cpp Thu May 15 10:44:20 2014 -0700
+++ b/hotspot/src/share/vm/classfile/verifier.cpp Thu May 15 17:38:50 2014 -0400
@@ -211,9 +211,9 @@
// reflection implementation, not just those associated with
// sun/reflect/SerializationConstructorAccessor.
// NOTE: this is called too early in the bootstrapping process to be
- // guarded by Universe::is_gte_jdk14x_version()/UseNewReflection.
+ // guarded by Universe::is_gte_jdk14x_version().
// Also for lambda generated code, gte jdk8
- (!is_reflect || VerifyReflectionBytecodes));
+ (!is_reflect));
}
Symbol* Verifier::inference_verify(
--- a/hotspot/src/share/vm/interpreter/linkResolver.cpp Thu May 15 10:44:20 2014 -0700
+++ b/hotspot/src/share/vm/interpreter/linkResolver.cpp Thu May 15 17:38:50 2014 -0400
@@ -950,7 +950,6 @@
// reflection implementation, not just those associated with
// sun/reflect/SerializationConstructorAccessor.
bool is_reflect = JDK_Version::is_gte_jdk14x_version() &&
- UseNewReflection &&
klass_to_check->is_subclass_of(
SystemDictionary::reflect_MagicAccessorImpl_klass());
--- a/hotspot/src/share/vm/oops/method.cpp Thu May 15 10:44:20 2014 -0700
+++ b/hotspot/src/share/vm/oops/method.cpp Thu May 15 17:38:50 2014 -0400
@@ -1019,13 +1019,11 @@
* security related stack walks (like Reflection.getCallerClass).
*/
bool Method::is_ignored_by_security_stack_walk() const {
- const bool use_new_reflection = JDK_Version::is_gte_jdk14x_version() && UseNewReflection;
-
if (intrinsic_id() == vmIntrinsics::_invoke) {
// This is Method.invoke() -- ignore it
return true;
}
- if (use_new_reflection &&
+ if (JDK_Version::is_gte_jdk14x_version() &&
method_holder()->is_subclass_of(SystemDictionary::reflect_MethodAccessorImpl_klass())) {
// This is an auxilary frame -- ignore it
return true;
--- a/hotspot/src/share/vm/opto/library_call.cpp Thu May 15 10:44:20 2014 -0700
+++ b/hotspot/src/share/vm/opto/library_call.cpp Thu May 15 17:38:50 2014 -0400
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 1999, 2013, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1999, 2014, Oracle and/or its affiliates. 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
@@ -420,7 +420,6 @@
return NULL;
case vmIntrinsics::_getCallerClass:
- if (!UseNewReflection) return NULL;
if (!InlineReflectionGetCallerClass) return NULL;
if (SystemDictionary::reflect_CallerSensitive_klass() == NULL) return NULL;
break;
--- a/hotspot/src/share/vm/prims/jni.cpp Thu May 15 10:44:20 2014 -0700
+++ b/hotspot/src/share/vm/prims/jni.cpp Thu May 15 17:38:50 2014 -0400
@@ -544,7 +544,7 @@
if (m->is_initializer()) {
reflection_method = Reflection::new_constructor(m, CHECK_NULL);
} else {
- reflection_method = Reflection::new_method(m, UseNewReflection, false, CHECK_NULL);
+ reflection_method = Reflection::new_method(m, false, CHECK_NULL);
}
ret = JNIHandles::make_local(env, reflection_method);
return ret;
@@ -2272,7 +2272,7 @@
found = InstanceKlass::cast(k)->find_field_from_offset(offset, false, &fd);
}
assert(found, "bad fieldID passed into jni_ToReflectedField");
- oop reflected = Reflection::new_field(&fd, UseNewReflection, CHECK_NULL);
+ oop reflected = Reflection::new_field(&fd, CHECK_NULL);
ret = JNIHandles::make_local(env, reflected);
return ret;
JNI_END
--- a/hotspot/src/share/vm/prims/jvm.cpp Thu May 15 10:44:20 2014 -0700
+++ b/hotspot/src/share/vm/prims/jvm.cpp Thu May 15 17:38:50 2014 -0400
@@ -1854,7 +1854,7 @@
if (!publicOnly || fs.access_flags().is_public()) {
fd.reinitialize(k(), fs.index());
- oop field = Reflection::new_field(&fd, UseNewReflection, CHECK_NULL);
+ oop field = Reflection::new_field(&fd, CHECK_NULL);
result->obj_at_put(out_idx, field);
++out_idx;
}
@@ -1932,7 +1932,7 @@
if (want_constructor) {
m = Reflection::new_constructor(method, CHECK_NULL);
} else {
- m = Reflection::new_method(method, UseNewReflection, false, CHECK_NULL);
+ m = Reflection::new_method(method, false, CHECK_NULL);
}
result->obj_at_put(i, m);
}
@@ -2055,7 +2055,7 @@
}
oop method;
if (!m->is_initializer() || m->is_static()) {
- method = Reflection::new_method(m, true, true, CHECK_NULL);
+ method = Reflection::new_method(m, true, CHECK_NULL);
} else {
method = Reflection::new_constructor(m, CHECK_NULL);
}
@@ -2105,7 +2105,7 @@
if (target_klass == NULL) {
THROW_MSG_0(vmSymbols::java_lang_RuntimeException(), "Unable to look up field in target class");
}
- oop field = Reflection::new_field(&fd, true, CHECK_NULL);
+ oop field = Reflection::new_field(&fd, CHECK_NULL);
return JNIHandles::make_local(field);
}
@@ -3521,7 +3521,6 @@
JVM_ENTRY(jobject, JVM_LatestUserDefinedLoader(JNIEnv *env))
for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) {
- // UseNewReflection
vfst.skip_reflection_related_frames(); // Only needed for 1.4 reflection
oop loader = vfst.method()->method_holder()->class_loader();
if (loader != NULL) {
--- a/hotspot/src/share/vm/runtime/arguments.cpp Thu May 15 10:44:20 2014 -0700
+++ b/hotspot/src/share/vm/runtime/arguments.cpp Thu May 15 17:38:50 2014 -0400
@@ -311,6 +311,9 @@
{ "UseBoundThreads", JDK_Version::jdk(9), JDK_Version::jdk(10) },
{ "DefaultThreadPriority", JDK_Version::jdk(9), JDK_Version::jdk(10) },
{ "NoYieldsInMicrolock", JDK_Version::jdk(9), JDK_Version::jdk(10) },
+ { "UseNewReflection", JDK_Version::jdk(9), JDK_Version::jdk(10) },
+ { "ReflectionWrapResolutionErrors",JDK_Version::jdk(9), JDK_Version::jdk(10) },
+ { "VerifyReflectionBytecodes", JDK_Version::jdk(9), JDK_Version::jdk(10) },
{ NULL, JDK_Version(0), JDK_Version(0) }
};
--- a/hotspot/src/share/vm/runtime/globals.hpp Thu May 15 10:44:20 2014 -0700
+++ b/hotspot/src/share/vm/runtime/globals.hpp Thu May 15 17:38:50 2014 -0400
@@ -3647,22 +3647,6 @@
\
/* New JDK 1.4 reflection implementation */ \
\
- develop(bool, UseNewReflection, true, \
- "Temporary flag for transition to reflection based on dynamic " \
- "bytecode generation in 1.4; can no longer be turned off in 1.4 " \
- "JDK, and is unneeded in 1.3 JDK, but marks most places VM " \
- "changes were needed") \
- \
- develop(bool, VerifyReflectionBytecodes, false, \
- "Force verification of 1.4 reflection bytecodes. Does not work " \
- "in situations like that described in 4486457 or for " \
- "constructors generated for serialization, so can not be enabled "\
- "in product.") \
- \
- product(bool, ReflectionWrapResolutionErrors, true, \
- "Temporary flag for transition to AbstractMethodError wrapped " \
- "in InvocationTargetException. See 6531596") \
- \
develop(intx, FastSuperclassLimit, 8, \
"Depth of hardwired instanceof accelerator array") \
\
--- a/hotspot/src/share/vm/runtime/reflection.cpp Thu May 15 10:44:20 2014 -0700
+++ b/hotspot/src/share/vm/runtime/reflection.cpp Thu May 15 17:38:50 2014 -0400
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1997, 2014, Oracle and/or its affiliates. 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
@@ -466,7 +466,6 @@
// New (1.4) reflection implementation. Allow all accesses from
// sun/reflect/MagicAccessorImpl subclasses to succeed trivially.
if ( JDK_Version::is_gte_jdk14x_version()
- && UseNewReflection
&& current_class->is_subclass_of(SystemDictionary::reflect_MagicAccessorImpl_klass())) {
return true;
}
@@ -571,7 +570,6 @@
// New (1.4) reflection implementation. Allow all accesses from
// sun/reflect/MagicAccessorImpl subclasses to succeed trivially.
if ( JDK_Version::is_gte_jdk14x_version()
- && UseNewReflection
&& current_class->is_subclass_of(SystemDictionary::reflect_MagicAccessorImpl_klass())) {
return true;
}
@@ -708,7 +706,7 @@
}
-oop Reflection::new_method(methodHandle method, bool intern_name, bool for_constant_pool_access, TRAPS) {
+oop Reflection::new_method(methodHandle method, 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() ||
@@ -731,14 +729,8 @@
if (exception_types.is_null()) return NULL;
Symbol* method_name = 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);
- }
+ oop name_oop = StringTable::intern(method_name, CHECK_NULL);
+ Handle name = Handle(THREAD, name_oop);
if (name == NULL) return NULL;
int modifiers = method->access_flags().as_int() & JVM_RECOGNIZED_METHOD_MODIFIERS;
@@ -825,16 +817,10 @@
}
-oop Reflection::new_field(fieldDescriptor* fd, bool intern_name, TRAPS) {
+oop Reflection::new_field(fieldDescriptor* fd, TRAPS) {
Symbol* field_name = 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);
- }
+ oop name_oop = StringTable::intern(field_name, CHECK_NULL);
+ Handle name = Handle(THREAD, name_oop);
Symbol* signature = fd->signature();
instanceKlassHandle holder (THREAD, fd->field_holder());
Handle type = new_type(signature, holder, CHECK_NULL);
@@ -933,27 +919,23 @@
// resolve based on the receiver
if (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;
- // JVMTI has already reported the pending exception
- // JVMTI internal flag reset is needed in order to report InvocationTargetException
- if (THREAD->is_Java_thread()) {
- JvmtiExport::clear_detected_exception((JavaThread*) THREAD);
- }
- JavaCallArguments args(Handle(THREAD, resolution_exception));
- THROW_ARG_0(vmSymbols::java_lang_reflect_InvocationTargetException(),
- vmSymbols::throwable_void_signature(),
- &args);
+ //
+ // 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;
+ // JVMTI has already reported the pending exception
+ // JVMTI internal flag reset is needed in order to report InvocationTargetException
+ if (THREAD->is_Java_thread()) {
+ JvmtiExport::clear_detected_exception((JavaThread*) THREAD);
}
- } else {
- method = resolve_interface_call(klass, reflected_method, target_klass, receiver, CHECK_(NULL));
+ JavaCallArguments args(Handle(THREAD, resolution_exception));
+ THROW_ARG_0(vmSymbols::java_lang_reflect_InvocationTargetException(),
+ vmSymbols::throwable_void_signature(),
+ &args);
}
} else {
// if the method can be overridden, we resolve using the vtable index.
@@ -970,24 +952,16 @@
// 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(),
- Method::name_and_sig_as_C_string(target_klass(),
- method->name(),
- method->signature()));
- JavaCallArguments args(h_origexception);
- THROW_ARG_0(vmSymbols::java_lang_reflect_InvocationTargetException(),
- vmSymbols::throwable_void_signature(),
- &args);
- } else {
- ResourceMark rm(THREAD);
- THROW_MSG_0(vmSymbols::java_lang_AbstractMethodError(),
- Method::name_and_sig_as_C_string(target_klass(),
- method->name(),
- method->signature()));
- }
+ ResourceMark rm(THREAD);
+ Handle h_origexception = Exceptions::new_exception(THREAD,
+ vmSymbols::java_lang_AbstractMethodError(),
+ Method::name_and_sig_as_C_string(target_klass(),
+ method->name(),
+ method->signature()));
+ JavaCallArguments args(h_origexception);
+ THROW_ARG_0(vmSymbols::java_lang_reflect_InvocationTargetException(),
+ vmSymbols::throwable_void_signature(),
+ &args);
}
}
}
@@ -1006,7 +980,7 @@
// In the JDK 1.4 reflection implementation, the security check is
// done at the Java level
- if (!(JDK_Version::is_gte_jdk14x_version() && UseNewReflection)) {
+ if (!JDK_Version::is_gte_jdk14x_version()) {
// Access checking (unless overridden by Method)
if (!override) {
@@ -1018,7 +992,7 @@
}
}
- } // !(Universe::is_gte_jdk14x_version() && UseNewReflection)
+ } // !Universe::is_gte_jdk14x_version()
assert(ptypes->is_objArray(), "just checking");
int args_len = args.is_null() ? 0 : args->length();
--- a/hotspot/src/share/vm/runtime/reflection.hpp Thu May 15 10:44:20 2014 -0700
+++ b/hotspot/src/share/vm/runtime/reflection.hpp Thu May 15 17:38:50 2014 -0400
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1997, 2014, Oracle and/or its affiliates. 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
@@ -113,11 +113,11 @@
//
// Create a java.lang.reflect.Method object based on a method
- static oop new_method(methodHandle method, bool intern_name, bool for_constant_pool_access, TRAPS);
+ static oop new_method(methodHandle method, bool for_constant_pool_access, TRAPS);
// Create a java.lang.reflect.Constructor object based on a method
static oop new_constructor(methodHandle method, TRAPS);
// Create a java.lang.reflect.Field object based on a field descriptor
- static oop new_field(fieldDescriptor* fd, bool intern_name, TRAPS);
+ static oop new_field(fieldDescriptor* fd, TRAPS);
// Create a java.lang.reflect.Parameter object based on a
// MethodParameterElement
static oop new_parameter(Handle method, int index, Symbol* sym,
--- a/hotspot/src/share/vm/runtime/vframe.cpp Thu May 15 10:44:20 2014 -0700
+++ b/hotspot/src/share/vm/runtime/vframe.cpp Thu May 15 17:38:50 2014 -0400
@@ -473,7 +473,7 @@
void vframeStreamCommon::skip_reflection_related_frames() {
while (!at_end() &&
- (JDK_Version::is_gte_jdk14x_version() && UseNewReflection &&
+ (JDK_Version::is_gte_jdk14x_version() &&
(method()->method_holder()->is_subclass_of(SystemDictionary::reflect_MethodAccessorImpl_klass()) ||
method()->method_holder()->is_subclass_of(SystemDictionary::reflect_ConstructorAccessorImpl_klass())))) {
next();