author | rbackman |
Tue, 06 Mar 2012 12:36:59 +0100 | |
changeset 12377 | ae6def2813e0 |
parent 10565 | dc90c239f4ec |
child 13391 | 30245956af37 |
permissions | -rw-r--r-- |
1 | 1 |
/* |
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* Copyright (c) 1997, 2011, Oracle and/or its affiliates. All rights reserved. |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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* |
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*/ |
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||
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#include "precompiled.hpp" |
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#include "classfile/systemDictionary.hpp" |
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#include "classfile/vmSymbols.hpp" |
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#include "compiler/compileBroker.hpp" |
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#include "gc_interface/collectedHeap.inline.hpp" |
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#include "interpreter/bytecode.hpp" |
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#include "interpreter/interpreterRuntime.hpp" |
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#include "interpreter/linkResolver.hpp" |
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#include "memory/resourceArea.hpp" |
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#include "memory/universe.inline.hpp" |
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#include "oops/instanceKlass.hpp" |
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#include "oops/objArrayOop.hpp" |
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#include "prims/methodHandles.hpp" |
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#include "prims/nativeLookup.hpp" |
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#include "runtime/compilationPolicy.hpp" |
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#include "runtime/fieldDescriptor.hpp" |
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#include "runtime/frame.inline.hpp" |
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#include "runtime/handles.inline.hpp" |
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#include "runtime/reflection.hpp" |
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#include "runtime/signature.hpp" |
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#include "runtime/vmThread.hpp" |
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#ifdef TARGET_OS_FAMILY_linux |
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# include "thread_linux.inline.hpp" |
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#endif |
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#ifdef TARGET_OS_FAMILY_solaris |
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# include "thread_solaris.inline.hpp" |
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#endif |
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#ifdef TARGET_OS_FAMILY_windows |
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# include "thread_windows.inline.hpp" |
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#endif |
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#ifdef TARGET_OS_FAMILY_bsd |
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# include "thread_bsd.inline.hpp" |
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#endif |
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//------------------------------------------------------------------------------------------------------------------------ |
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// Implementation of FieldAccessInfo |
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void FieldAccessInfo::set(KlassHandle klass, Symbol* name, int field_index, int field_offset, |
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BasicType field_type, AccessFlags access_flags) { |
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_klass = klass; |
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_name = name; |
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_field_index = field_index; |
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_field_offset = field_offset; |
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_field_type = field_type; |
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_access_flags = access_flags; |
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} |
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//------------------------------------------------------------------------------------------------------------------------ |
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// Implementation of CallInfo |
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void CallInfo::set_static(KlassHandle resolved_klass, methodHandle resolved_method, TRAPS) { |
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int vtable_index = methodOopDesc::nonvirtual_vtable_index; |
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set_common(resolved_klass, resolved_klass, resolved_method, resolved_method, vtable_index, CHECK); |
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} |
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void CallInfo::set_interface(KlassHandle resolved_klass, KlassHandle selected_klass, methodHandle resolved_method, methodHandle selected_method, TRAPS) { |
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// This is only called for interface methods. If the resolved_method |
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// comes from java/lang/Object, it can be the subject of a virtual call, so |
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// we should pick the vtable index from the resolved method. |
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// Other than that case, there is no valid vtable index to specify. |
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int vtable_index = methodOopDesc::invalid_vtable_index; |
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if (resolved_method->method_holder() == SystemDictionary::Object_klass()) { |
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assert(resolved_method->vtable_index() == selected_method->vtable_index(), "sanity check"); |
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vtable_index = resolved_method->vtable_index(); |
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} |
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set_common(resolved_klass, selected_klass, resolved_method, selected_method, vtable_index, CHECK); |
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} |
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void CallInfo::set_virtual(KlassHandle resolved_klass, KlassHandle selected_klass, methodHandle resolved_method, methodHandle selected_method, int vtable_index, TRAPS) { |
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assert(vtable_index >= 0 || vtable_index == methodOopDesc::nonvirtual_vtable_index, "valid index"); |
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set_common(resolved_klass, selected_klass, resolved_method, selected_method, vtable_index, CHECK); |
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} |
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void CallInfo::set_dynamic(methodHandle resolved_method, TRAPS) { |
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assert(resolved_method->is_method_handle_invoke(), ""); |
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KlassHandle resolved_klass = SystemDictionaryHandles::MethodHandle_klass(); |
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assert(resolved_klass == resolved_method->method_holder(), ""); |
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int vtable_index = methodOopDesc::nonvirtual_vtable_index; |
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assert(resolved_method->vtable_index() == vtable_index, ""); |
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set_common(resolved_klass, KlassHandle(), resolved_method, resolved_method, vtable_index, CHECK); |
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} |
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void CallInfo::set_common(KlassHandle resolved_klass, KlassHandle selected_klass, methodHandle resolved_method, methodHandle selected_method, int vtable_index, TRAPS) { |
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assert(resolved_method->signature() == selected_method->signature(), "signatures must correspond"); |
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_resolved_klass = resolved_klass; |
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_selected_klass = selected_klass; |
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_resolved_method = resolved_method; |
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_selected_method = selected_method; |
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_vtable_index = vtable_index; |
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if (CompilationPolicy::must_be_compiled(selected_method)) { |
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// This path is unusual, mostly used by the '-Xcomp' stress test mode. |
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// Note: with several active threads, the must_be_compiled may be true |
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// while can_be_compiled is false; remove assert |
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// assert(CompilationPolicy::can_be_compiled(selected_method), "cannot compile"); |
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if (THREAD->is_Compiler_thread()) { |
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// don't force compilation, resolve was on behalf of compiler |
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return; |
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} |
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if (instanceKlass::cast(selected_method->method_holder())->is_not_initialized()) { |
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// 'is_not_initialized' means not only '!is_initialized', but also that |
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// initialization has not been started yet ('!being_initialized') |
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// Do not force compilation of methods in uninitialized classes. |
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// Note that doing this would throw an assert later, |
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// in CompileBroker::compile_method. |
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// We sometimes use the link resolver to do reflective lookups |
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// even before classes are initialized. |
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return; |
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} |
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CompileBroker::compile_method(selected_method, InvocationEntryBci, |
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CompilationPolicy::policy()->initial_compile_level(), |
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methodHandle(), 0, "must_be_compiled", CHECK); |
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} |
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} |
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//------------------------------------------------------------------------------------------------------------------------ |
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// Klass resolution |
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void LinkResolver::check_klass_accessability(KlassHandle ref_klass, KlassHandle sel_klass, TRAPS) { |
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if (!Reflection::verify_class_access(ref_klass->as_klassOop(), |
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sel_klass->as_klassOop(), |
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true)) { |
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ResourceMark rm(THREAD); |
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Exceptions::fthrow( |
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THREAD_AND_LOCATION, |
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vmSymbols::java_lang_IllegalAccessError(), |
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"tried to access class %s from class %s", |
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sel_klass->external_name(), |
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ref_klass->external_name() |
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); |
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return; |
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} |
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} |
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void LinkResolver::resolve_klass(KlassHandle& result, constantPoolHandle pool, int index, TRAPS) { |
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klassOop result_oop = pool->klass_ref_at(index, CHECK); |
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result = KlassHandle(THREAD, result_oop); |
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} |
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void LinkResolver::resolve_klass_no_update(KlassHandle& result, constantPoolHandle pool, int index, TRAPS) { |
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klassOop result_oop = |
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constantPoolOopDesc::klass_ref_at_if_loaded_check(pool, index, CHECK); |
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result = KlassHandle(THREAD, result_oop); |
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} |
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//------------------------------------------------------------------------------------------------------------------------ |
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// Method resolution |
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// |
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// According to JVM spec. $5.4.3c & $5.4.3d |
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void LinkResolver::lookup_method_in_klasses(methodHandle& result, KlassHandle klass, Symbol* name, Symbol* signature, TRAPS) { |
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methodOop result_oop = klass->uncached_lookup_method(name, signature); |
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if (EnableInvokeDynamic && result_oop != NULL) { |
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switch (result_oop->intrinsic_id()) { |
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case vmIntrinsics::_invokeExact: |
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case vmIntrinsics::_invokeGeneric: |
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case vmIntrinsics::_invokeDynamic: |
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// Do not link directly to these. The VM must produce a synthetic one using lookup_implicit_method. |
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return; |
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} |
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} |
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result = methodHandle(THREAD, result_oop); |
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} |
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// returns first instance method |
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void LinkResolver::lookup_instance_method_in_klasses(methodHandle& result, KlassHandle klass, Symbol* name, Symbol* signature, TRAPS) { |
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methodOop result_oop = klass->uncached_lookup_method(name, signature); |
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result = methodHandle(THREAD, result_oop); |
198 |
while (!result.is_null() && result->is_static()) { |
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klass = KlassHandle(THREAD, Klass::cast(result->method_holder())->super()); |
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result = methodHandle(THREAD, klass->uncached_lookup_method(name, signature)); |
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} |
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} |
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int LinkResolver::vtable_index_of_miranda_method(KlassHandle klass, Symbol* name, Symbol* signature, TRAPS) { |
1 | 206 |
ResourceMark rm(THREAD); |
207 |
klassVtable *vt = instanceKlass::cast(klass())->vtable(); |
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return vt->index_of_miranda(name, signature); |
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} |
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void LinkResolver::lookup_method_in_interfaces(methodHandle& result, KlassHandle klass, Symbol* name, Symbol* signature, TRAPS) { |
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instanceKlass *ik = instanceKlass::cast(klass()); |
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result = methodHandle(THREAD, ik->lookup_method_in_all_interfaces(name, signature)); |
1 | 214 |
} |
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void LinkResolver::lookup_implicit_method(methodHandle& result, |
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KlassHandle klass, Symbol* name, Symbol* signature, |
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KlassHandle current_klass, |
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TRAPS) { |
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if (EnableInvokeDynamic && |
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klass() == SystemDictionary::MethodHandle_klass() && |
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methodOopDesc::is_method_handle_invoke_name(name)) { |
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if (!THREAD->is_Compiler_thread() && !MethodHandles::enabled()) { |
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// Make sure the Java part of the runtime has been booted up. |
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klassOop natives = SystemDictionary::MethodHandleNatives_klass(); |
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if (natives == NULL || instanceKlass::cast(natives)->is_not_initialized()) { |
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SystemDictionary::resolve_or_fail(vmSymbols::java_lang_invoke_MethodHandleNatives(), |
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Handle(), |
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Handle(), |
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true, |
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CHECK); |
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} |
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} |
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methodOop result_oop = SystemDictionary::find_method_handle_invoke(name, |
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signature, |
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current_klass, |
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CHECK); |
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if (result_oop != NULL) { |
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assert(result_oop->is_method_handle_invoke() && result_oop->signature() == signature, "consistent"); |
2534 | 240 |
result = methodHandle(THREAD, result_oop); |
241 |
} |
|
242 |
} |
|
243 |
} |
|
244 |
||
1 | 245 |
void LinkResolver::check_method_accessability(KlassHandle ref_klass, |
246 |
KlassHandle resolved_klass, |
|
247 |
KlassHandle sel_klass, |
|
248 |
methodHandle sel_method, |
|
249 |
TRAPS) { |
|
250 |
||
251 |
AccessFlags flags = sel_method->access_flags(); |
|
252 |
||
253 |
// Special case: arrays always override "clone". JVMS 2.15. |
|
254 |
// If the resolved klass is an array class, and the declaring class |
|
255 |
// is java.lang.Object and the method is "clone", set the flags |
|
256 |
// to public. |
|
257 |
// |
|
258 |
// We'll check for the method name first, as that's most likely |
|
259 |
// to be false (so we'll short-circuit out of these tests). |
|
260 |
if (sel_method->name() == vmSymbols::clone_name() && |
|
4571 | 261 |
sel_klass() == SystemDictionary::Object_klass() && |
1 | 262 |
resolved_klass->oop_is_array()) { |
263 |
// We need to change "protected" to "public". |
|
264 |
assert(flags.is_protected(), "clone not protected?"); |
|
265 |
jint new_flags = flags.as_int(); |
|
266 |
new_flags = new_flags & (~JVM_ACC_PROTECTED); |
|
267 |
new_flags = new_flags | JVM_ACC_PUBLIC; |
|
268 |
flags.set_flags(new_flags); |
|
269 |
} |
|
270 |
||
271 |
if (!Reflection::verify_field_access(ref_klass->as_klassOop(), |
|
272 |
resolved_klass->as_klassOop(), |
|
273 |
sel_klass->as_klassOop(), |
|
274 |
flags, |
|
275 |
true)) { |
|
276 |
ResourceMark rm(THREAD); |
|
277 |
Exceptions::fthrow( |
|
278 |
THREAD_AND_LOCATION, |
|
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|
279 |
vmSymbols::java_lang_IllegalAccessError(), |
1 | 280 |
"tried to access method %s.%s%s from class %s", |
281 |
sel_klass->external_name(), |
|
282 |
sel_method->name()->as_C_string(), |
|
283 |
sel_method->signature()->as_C_string(), |
|
284 |
ref_klass->external_name() |
|
285 |
); |
|
286 |
return; |
|
287 |
} |
|
288 |
} |
|
289 |
||
290 |
void LinkResolver::resolve_method(methodHandle& resolved_method, KlassHandle& resolved_klass, |
|
291 |
constantPoolHandle pool, int index, TRAPS) { |
|
292 |
||
293 |
// resolve klass |
|
294 |
resolve_klass(resolved_klass, pool, index, CHECK); |
|
295 |
||
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Symbol* method_name = pool->name_ref_at(index); |
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Symbol* method_signature = pool->signature_ref_at(index); |
1 | 298 |
KlassHandle current_klass(THREAD, pool->pool_holder()); |
299 |
||
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if (pool->has_preresolution() |
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|| (resolved_klass() == SystemDictionary::MethodHandle_klass() && |
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|
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methodOopDesc::is_method_handle_invoke_name(method_name))) { |
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methodOop result_oop = constantPoolOopDesc::method_at_if_loaded(pool, index); |
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if (result_oop != NULL) { |
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resolved_method = methodHandle(THREAD, result_oop); |
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306 |
return; |
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|
307 |
} |
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308 |
} |
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|
309 |
|
1 | 310 |
resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, true, CHECK); |
311 |
} |
|
312 |
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void LinkResolver::resolve_dynamic_method(methodHandle& resolved_method, KlassHandle& resolved_klass, constantPoolHandle pool, int index, TRAPS) { |
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// The class is java.lang.invoke.MethodHandle |
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resolved_klass = SystemDictionaryHandles::MethodHandle_klass(); |
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|
316 |
|
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Symbol* method_name = vmSymbols::invokeExact_name(); |
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|
318 |
|
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319 |
Symbol* method_signature = pool->signature_ref_at(index); |
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|
320 |
KlassHandle current_klass (THREAD, pool->pool_holder()); |
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|
321 |
|
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|
322 |
resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, true, CHECK); |
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|
323 |
} |
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|
324 |
|
1 | 325 |
void LinkResolver::resolve_interface_method(methodHandle& resolved_method, KlassHandle& resolved_klass, constantPoolHandle pool, int index, TRAPS) { |
326 |
||
327 |
// resolve klass |
|
328 |
resolve_klass(resolved_klass, pool, index, CHECK); |
|
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|
329 |
Symbol* method_name = pool->name_ref_at(index); |
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|
330 |
Symbol* method_signature = pool->signature_ref_at(index); |
1 | 331 |
KlassHandle current_klass(THREAD, pool->pool_holder()); |
332 |
||
333 |
resolve_interface_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, true, CHECK); |
|
334 |
} |
|
335 |
||
336 |
||
337 |
void LinkResolver::resolve_method(methodHandle& resolved_method, KlassHandle resolved_klass, |
|
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|
338 |
Symbol* method_name, Symbol* method_signature, |
1 | 339 |
KlassHandle current_klass, bool check_access, TRAPS) { |
340 |
||
341 |
// 1. check if klass is not interface |
|
342 |
if (resolved_klass->is_interface()) { |
|
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|
343 |
ResourceMark rm(THREAD); |
1 | 344 |
char buf[200]; |
345 |
jio_snprintf(buf, sizeof(buf), "Found interface %s, but class was expected", Klass::cast(resolved_klass())->external_name()); |
|
346 |
THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); |
|
347 |
} |
|
348 |
||
349 |
// 2. lookup method in resolved klass and its super klasses |
|
350 |
lookup_method_in_klasses(resolved_method, resolved_klass, method_name, method_signature, CHECK); |
|
351 |
||
352 |
if (resolved_method.is_null()) { // not found in the class hierarchy |
|
353 |
// 3. lookup method in all the interfaces implemented by the resolved klass |
|
354 |
lookup_method_in_interfaces(resolved_method, resolved_klass, method_name, method_signature, CHECK); |
|
355 |
||
356 |
if (resolved_method.is_null()) { |
|
2534 | 357 |
// JSR 292: see if this is an implicitly generated method MethodHandle.invoke(*...) |
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|
358 |
lookup_implicit_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, CHECK); |
2534 | 359 |
} |
360 |
||
361 |
if (resolved_method.is_null()) { |
|
1 | 362 |
// 4. method lookup failed |
363 |
ResourceMark rm(THREAD); |
|
364 |
THROW_MSG(vmSymbols::java_lang_NoSuchMethodError(), |
|
365 |
methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()), |
|
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|
366 |
method_name, |
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|
367 |
method_signature)); |
1 | 368 |
} |
369 |
} |
|
370 |
||
371 |
// 5. check if method is concrete |
|
372 |
if (resolved_method->is_abstract() && !resolved_klass->is_abstract()) { |
|
373 |
ResourceMark rm(THREAD); |
|
374 |
THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), |
|
375 |
methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()), |
|
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|
376 |
method_name, |
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|
377 |
method_signature)); |
1 | 378 |
} |
379 |
||
380 |
// 6. access checks, access checking may be turned off when calling from within the VM. |
|
381 |
if (check_access) { |
|
382 |
assert(current_klass.not_null() , "current_klass should not be null"); |
|
383 |
||
384 |
// check if method can be accessed by the referring class |
|
385 |
check_method_accessability(current_klass, |
|
386 |
resolved_klass, |
|
387 |
KlassHandle(THREAD, resolved_method->method_holder()), |
|
388 |
resolved_method, |
|
389 |
CHECK); |
|
390 |
||
391 |
// check loader constraints |
|
392 |
Handle loader (THREAD, instanceKlass::cast(current_klass())->class_loader()); |
|
393 |
Handle class_loader (THREAD, instanceKlass::cast(resolved_method->method_holder())->class_loader()); |
|
394 |
{ |
|
395 |
ResourceMark rm(THREAD); |
|
396 |
char* failed_type_name = |
|
397 |
SystemDictionary::check_signature_loaders(method_signature, loader, |
|
398 |
class_loader, true, CHECK); |
|
399 |
if (failed_type_name != NULL) { |
|
400 |
const char* msg = "loader constraint violation: when resolving method" |
|
401 |
" \"%s\" the class loader (instance of %s) of the current class, %s," |
|
402 |
" and the class loader (instance of %s) for resolved class, %s, have" |
|
403 |
" different Class objects for the type %s used in the signature"; |
|
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|
404 |
char* sig = methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()),method_name,method_signature); |
1 | 405 |
const char* loader1 = SystemDictionary::loader_name(loader()); |
406 |
char* current = instanceKlass::cast(current_klass())->name()->as_C_string(); |
|
407 |
const char* loader2 = SystemDictionary::loader_name(class_loader()); |
|
408 |
char* resolved = instanceKlass::cast(resolved_klass())->name()->as_C_string(); |
|
409 |
size_t buflen = strlen(msg) + strlen(sig) + strlen(loader1) + |
|
410 |
strlen(current) + strlen(loader2) + strlen(resolved) + |
|
411 |
strlen(failed_type_name); |
|
412 |
char* buf = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char, buflen); |
|
413 |
jio_snprintf(buf, buflen, msg, sig, loader1, current, loader2, |
|
414 |
resolved, failed_type_name); |
|
415 |
THROW_MSG(vmSymbols::java_lang_LinkageError(), buf); |
|
416 |
} |
|
417 |
} |
|
418 |
} |
|
419 |
} |
|
420 |
||
421 |
void LinkResolver::resolve_interface_method(methodHandle& resolved_method, |
|
422 |
KlassHandle resolved_klass, |
|
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|
423 |
Symbol* method_name, |
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|
424 |
Symbol* method_signature, |
1 | 425 |
KlassHandle current_klass, |
426 |
bool check_access, TRAPS) { |
|
427 |
||
428 |
// check if klass is interface |
|
429 |
if (!resolved_klass->is_interface()) { |
|
9425
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changeset
|
430 |
ResourceMark rm(THREAD); |
1 | 431 |
char buf[200]; |
432 |
jio_snprintf(buf, sizeof(buf), "Found class %s, but interface was expected", Klass::cast(resolved_klass())->external_name()); |
|
433 |
THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); |
|
434 |
} |
|
435 |
||
436 |
// lookup method in this interface or its super, java.lang.Object |
|
437 |
lookup_instance_method_in_klasses(resolved_method, resolved_klass, method_name, method_signature, CHECK); |
|
438 |
||
439 |
if (resolved_method.is_null()) { |
|
440 |
// lookup method in all the super-interfaces |
|
441 |
lookup_method_in_interfaces(resolved_method, resolved_klass, method_name, method_signature, CHECK); |
|
442 |
if (resolved_method.is_null()) { |
|
443 |
// no method found |
|
444 |
ResourceMark rm(THREAD); |
|
445 |
THROW_MSG(vmSymbols::java_lang_NoSuchMethodError(), |
|
446 |
methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()), |
|
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|
447 |
method_name, |
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|
448 |
method_signature)); |
1 | 449 |
} |
450 |
} |
|
451 |
||
452 |
if (check_access) { |
|
453 |
HandleMark hm(THREAD); |
|
454 |
Handle loader (THREAD, instanceKlass::cast(current_klass())->class_loader()); |
|
455 |
Handle class_loader (THREAD, instanceKlass::cast(resolved_method->method_holder())->class_loader()); |
|
456 |
{ |
|
457 |
ResourceMark rm(THREAD); |
|
458 |
char* failed_type_name = |
|
459 |
SystemDictionary::check_signature_loaders(method_signature, loader, |
|
460 |
class_loader, true, CHECK); |
|
461 |
if (failed_type_name != NULL) { |
|
462 |
const char* msg = "loader constraint violation: when resolving " |
|
463 |
"interface method \"%s\" the class loader (instance of %s) of the " |
|
464 |
"current class, %s, and the class loader (instance of %s) for " |
|
465 |
"resolved class, %s, have different Class objects for the type %s " |
|
466 |
"used in the signature"; |
|
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|
467 |
char* sig = methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()),method_name,method_signature); |
1 | 468 |
const char* loader1 = SystemDictionary::loader_name(loader()); |
469 |
char* current = instanceKlass::cast(current_klass())->name()->as_C_string(); |
|
470 |
const char* loader2 = SystemDictionary::loader_name(class_loader()); |
|
471 |
char* resolved = instanceKlass::cast(resolved_klass())->name()->as_C_string(); |
|
472 |
size_t buflen = strlen(msg) + strlen(sig) + strlen(loader1) + |
|
473 |
strlen(current) + strlen(loader2) + strlen(resolved) + |
|
474 |
strlen(failed_type_name); |
|
475 |
char* buf = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char, buflen); |
|
476 |
jio_snprintf(buf, buflen, msg, sig, loader1, current, loader2, |
|
477 |
resolved, failed_type_name); |
|
478 |
THROW_MSG(vmSymbols::java_lang_LinkageError(), buf); |
|
479 |
} |
|
480 |
} |
|
481 |
} |
|
482 |
} |
|
483 |
||
484 |
//------------------------------------------------------------------------------------------------------------------------ |
|
485 |
// Field resolution |
|
486 |
||
487 |
void LinkResolver::check_field_accessability(KlassHandle ref_klass, |
|
488 |
KlassHandle resolved_klass, |
|
489 |
KlassHandle sel_klass, |
|
490 |
fieldDescriptor& fd, |
|
491 |
TRAPS) { |
|
492 |
if (!Reflection::verify_field_access(ref_klass->as_klassOop(), |
|
493 |
resolved_klass->as_klassOop(), |
|
494 |
sel_klass->as_klassOop(), |
|
495 |
fd.access_flags(), |
|
496 |
true)) { |
|
497 |
ResourceMark rm(THREAD); |
|
498 |
Exceptions::fthrow( |
|
499 |
THREAD_AND_LOCATION, |
|
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diff
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|
500 |
vmSymbols::java_lang_IllegalAccessError(), |
1 | 501 |
"tried to access field %s.%s from class %s", |
502 |
sel_klass->external_name(), |
|
503 |
fd.name()->as_C_string(), |
|
504 |
ref_klass->external_name() |
|
505 |
); |
|
506 |
return; |
|
507 |
} |
|
508 |
} |
|
509 |
||
510 |
void LinkResolver::resolve_field(FieldAccessInfo& result, constantPoolHandle pool, int index, Bytecodes::Code byte, bool check_only, TRAPS) { |
|
511 |
resolve_field(result, pool, index, byte, check_only, true, CHECK); |
|
512 |
} |
|
513 |
||
514 |
void LinkResolver::resolve_field(FieldAccessInfo& result, constantPoolHandle pool, int index, Bytecodes::Code byte, bool check_only, bool update_pool, TRAPS) { |
|
515 |
assert(byte == Bytecodes::_getstatic || byte == Bytecodes::_putstatic || |
|
516 |
byte == Bytecodes::_getfield || byte == Bytecodes::_putfield, "bad bytecode"); |
|
517 |
||
518 |
bool is_static = (byte == Bytecodes::_getstatic || byte == Bytecodes::_putstatic); |
|
519 |
bool is_put = (byte == Bytecodes::_putfield || byte == Bytecodes::_putstatic); |
|
520 |
||
521 |
// resolve specified klass |
|
522 |
KlassHandle resolved_klass; |
|
523 |
if (update_pool) { |
|
524 |
resolve_klass(resolved_klass, pool, index, CHECK); |
|
525 |
} else { |
|
526 |
resolve_klass_no_update(resolved_klass, pool, index, CHECK); |
|
527 |
} |
|
528 |
// Load these early in case the resolve of the containing klass fails |
|
8076
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diff
changeset
|
529 |
Symbol* field = pool->name_ref_at(index); |
96d498ec7ae1
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diff
changeset
|
530 |
Symbol* sig = pool->signature_ref_at(index); |
1 | 531 |
// Check if there's a resolved klass containing the field |
532 |
if( resolved_klass.is_null() ) { |
|
533 |
ResourceMark rm(THREAD); |
|
534 |
THROW_MSG(vmSymbols::java_lang_NoSuchFieldError(), field->as_C_string()); |
|
535 |
} |
|
536 |
||
537 |
// Resolve instance field |
|
538 |
fieldDescriptor fd; // find_field initializes fd if found |
|
539 |
KlassHandle sel_klass(THREAD, instanceKlass::cast(resolved_klass())->find_field(field, sig, &fd)); |
|
540 |
// check if field exists; i.e., if a klass containing the field def has been selected |
|
541 |
if (sel_klass.is_null()){ |
|
542 |
ResourceMark rm(THREAD); |
|
543 |
THROW_MSG(vmSymbols::java_lang_NoSuchFieldError(), field->as_C_string()); |
|
544 |
} |
|
545 |
||
546 |
// check access |
|
547 |
KlassHandle ref_klass(THREAD, pool->pool_holder()); |
|
548 |
check_field_accessability(ref_klass, resolved_klass, sel_klass, fd, CHECK); |
|
549 |
||
550 |
// check for errors |
|
551 |
if (is_static != fd.is_static()) { |
|
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|
552 |
ResourceMark rm(THREAD); |
1 | 553 |
char msg[200]; |
554 |
jio_snprintf(msg, sizeof(msg), "Expected %s field %s.%s", is_static ? "static" : "non-static", Klass::cast(resolved_klass())->external_name(), fd.name()->as_C_string()); |
|
555 |
THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), msg); |
|
556 |
} |
|
557 |
||
558 |
// Final fields can only be accessed from its own class. |
|
559 |
if (is_put && fd.access_flags().is_final() && sel_klass() != pool->pool_holder()) { |
|
560 |
THROW(vmSymbols::java_lang_IllegalAccessError()); |
|
561 |
} |
|
562 |
||
563 |
// initialize resolved_klass if necessary |
|
564 |
// note 1: the klass which declared the field must be initialized (i.e, sel_klass) |
|
565 |
// according to the newest JVM spec (5.5, p.170) - was bug (gri 7/28/99) |
|
566 |
// |
|
567 |
// note 2: we don't want to force initialization if we are just checking |
|
568 |
// if the field access is legal; e.g., during compilation |
|
569 |
if (is_static && !check_only) { |
|
570 |
sel_klass->initialize(CHECK); |
|
571 |
} |
|
572 |
||
573 |
{ |
|
574 |
HandleMark hm(THREAD); |
|
575 |
Handle ref_loader (THREAD, instanceKlass::cast(ref_klass())->class_loader()); |
|
576 |
Handle sel_loader (THREAD, instanceKlass::cast(sel_klass())->class_loader()); |
|
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|
577 |
Symbol* signature_ref = pool->signature_ref_at(index); |
1 | 578 |
{ |
579 |
ResourceMark rm(THREAD); |
|
580 |
char* failed_type_name = |
|
581 |
SystemDictionary::check_signature_loaders(signature_ref, |
|
582 |
ref_loader, sel_loader, |
|
583 |
false, |
|
584 |
CHECK); |
|
585 |
if (failed_type_name != NULL) { |
|
586 |
const char* msg = "loader constraint violation: when resolving field" |
|
587 |
" \"%s\" the class loader (instance of %s) of the referring class, " |
|
588 |
"%s, and the class loader (instance of %s) for the field's resolved " |
|
589 |
"type, %s, have different Class objects for that type"; |
|
8076
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diff
changeset
|
590 |
char* field_name = field->as_C_string(); |
1 | 591 |
const char* loader1 = SystemDictionary::loader_name(ref_loader()); |
592 |
char* sel = instanceKlass::cast(sel_klass())->name()->as_C_string(); |
|
593 |
const char* loader2 = SystemDictionary::loader_name(sel_loader()); |
|
594 |
size_t buflen = strlen(msg) + strlen(field_name) + strlen(loader1) + |
|
595 |
strlen(sel) + strlen(loader2) + strlen(failed_type_name); |
|
596 |
char* buf = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char, buflen); |
|
597 |
jio_snprintf(buf, buflen, msg, field_name, loader1, sel, loader2, |
|
598 |
failed_type_name); |
|
599 |
THROW_MSG(vmSymbols::java_lang_LinkageError(), buf); |
|
600 |
} |
|
601 |
} |
|
602 |
} |
|
603 |
||
604 |
// return information. note that the klass is set to the actual klass containing the |
|
605 |
// field, otherwise access of static fields in superclasses will not work. |
|
606 |
KlassHandle holder (THREAD, fd.field_holder()); |
|
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|
607 |
Symbol* name = fd.name(); |
1 | 608 |
result.set(holder, name, fd.index(), fd.offset(), fd.field_type(), fd.access_flags()); |
609 |
} |
|
610 |
||
611 |
||
612 |
//------------------------------------------------------------------------------------------------------------------------ |
|
613 |
// Invoke resolution |
|
614 |
// |
|
615 |
// Naming conventions: |
|
616 |
// |
|
617 |
// resolved_method the specified method (i.e., static receiver specified via constant pool index) |
|
618 |
// sel_method the selected method (selected via run-time lookup; e.g., based on dynamic receiver class) |
|
619 |
// resolved_klass the specified klass (i.e., specified via constant pool index) |
|
620 |
// recv_klass the receiver klass |
|
621 |
||
622 |
||
8076
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|
623 |
void LinkResolver::resolve_static_call(CallInfo& result, KlassHandle& resolved_klass, Symbol* method_name, |
96d498ec7ae1
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changeset
|
624 |
Symbol* method_signature, KlassHandle current_klass, |
1 | 625 |
bool check_access, bool initialize_class, TRAPS) { |
626 |
methodHandle resolved_method; |
|
627 |
linktime_resolve_static_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); |
|
628 |
resolved_klass = KlassHandle(THREAD, Klass::cast(resolved_method->method_holder())); |
|
629 |
||
630 |
// Initialize klass (this should only happen if everything is ok) |
|
631 |
if (initialize_class && resolved_klass->should_be_initialized()) { |
|
632 |
resolved_klass->initialize(CHECK); |
|
633 |
linktime_resolve_static_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); |
|
634 |
} |
|
635 |
||
636 |
// setup result |
|
637 |
result.set_static(resolved_klass, resolved_method, CHECK); |
|
638 |
} |
|
639 |
||
640 |
// throws linktime exceptions |
|
641 |
void LinkResolver::linktime_resolve_static_method(methodHandle& resolved_method, KlassHandle resolved_klass, |
|
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changeset
|
642 |
Symbol* method_name, Symbol* method_signature, |
1 | 643 |
KlassHandle current_klass, bool check_access, TRAPS) { |
644 |
||
645 |
resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); |
|
646 |
assert(resolved_method->name() != vmSymbols::class_initializer_name(), "should have been checked in verifier"); |
|
647 |
||
648 |
// check if static |
|
649 |
if (!resolved_method->is_static()) { |
|
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changeset
|
650 |
ResourceMark rm(THREAD); |
1 | 651 |
char buf[200]; |
652 |
jio_snprintf(buf, sizeof(buf), "Expected static method %s", methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()), |
|
653 |
resolved_method->name(), |
|
654 |
resolved_method->signature())); |
|
655 |
THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); |
|
656 |
} |
|
657 |
} |
|
658 |
||
659 |
||
8076
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diff
changeset
|
660 |
void LinkResolver::resolve_special_call(CallInfo& result, KlassHandle resolved_klass, Symbol* method_name, |
96d498ec7ae1
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
7397
diff
changeset
|
661 |
Symbol* method_signature, KlassHandle current_klass, bool check_access, TRAPS) { |
1 | 662 |
methodHandle resolved_method; |
663 |
linktime_resolve_special_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); |
|
664 |
runtime_resolve_special_method(result, resolved_method, resolved_klass, current_klass, check_access, CHECK); |
|
665 |
} |
|
666 |
||
667 |
// throws linktime exceptions |
|
668 |
void LinkResolver::linktime_resolve_special_method(methodHandle& resolved_method, KlassHandle resolved_klass, |
|
8076
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6990754: Use native memory and reference counting to implement SymbolTable
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7397
diff
changeset
|
669 |
Symbol* method_name, Symbol* method_signature, |
1 | 670 |
KlassHandle current_klass, bool check_access, TRAPS) { |
671 |
||
672 |
resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); |
|
673 |
||
674 |
// check if method name is <init>, that it is found in same klass as static type |
|
675 |
if (resolved_method->name() == vmSymbols::object_initializer_name() && |
|
676 |
resolved_method->method_holder() != resolved_klass()) { |
|
677 |
ResourceMark rm(THREAD); |
|
678 |
Exceptions::fthrow( |
|
679 |
THREAD_AND_LOCATION, |
|
8076
96d498ec7ae1
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
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7397
diff
changeset
|
680 |
vmSymbols::java_lang_NoSuchMethodError(), |
1 | 681 |
"%s: method %s%s not found", |
682 |
resolved_klass->external_name(), |
|
683 |
resolved_method->name()->as_C_string(), |
|
684 |
resolved_method->signature()->as_C_string() |
|
685 |
); |
|
686 |
return; |
|
687 |
} |
|
688 |
||
689 |
// check if not static |
|
690 |
if (resolved_method->is_static()) { |
|
9425
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parents:
9116
diff
changeset
|
691 |
ResourceMark rm(THREAD); |
1 | 692 |
char buf[200]; |
693 |
jio_snprintf(buf, sizeof(buf), |
|
694 |
"Expecting non-static method %s", |
|
695 |
methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()), |
|
696 |
resolved_method->name(), |
|
697 |
resolved_method->signature())); |
|
698 |
THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); |
|
699 |
} |
|
700 |
} |
|
701 |
||
702 |
// throws runtime exceptions |
|
703 |
void LinkResolver::runtime_resolve_special_method(CallInfo& result, methodHandle resolved_method, KlassHandle resolved_klass, |
|
704 |
KlassHandle current_klass, bool check_access, TRAPS) { |
|
705 |
||
706 |
// resolved method is selected method unless we have an old-style lookup |
|
707 |
methodHandle sel_method(THREAD, resolved_method()); |
|
708 |
||
709 |
// check if this is an old-style super call and do a new lookup if so |
|
710 |
{ KlassHandle method_klass = KlassHandle(THREAD, |
|
711 |
resolved_method->method_holder()); |
|
712 |
||
713 |
if (check_access && |
|
714 |
// a) check if ACC_SUPER flag is set for the current class |
|
715 |
current_klass->is_super() && |
|
716 |
// b) check if the method class is a superclass of the current class (superclass relation is not reflexive!) |
|
717 |
current_klass->is_subtype_of(method_klass()) && current_klass() != method_klass() && |
|
718 |
// c) check if the method is not <init> |
|
719 |
resolved_method->name() != vmSymbols::object_initializer_name()) { |
|
720 |
// Lookup super method |
|
721 |
KlassHandle super_klass(THREAD, current_klass->super()); |
|
722 |
lookup_instance_method_in_klasses(sel_method, super_klass, |
|
8076
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coleenp
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7397
diff
changeset
|
723 |
resolved_method->name(), |
96d498ec7ae1
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
7397
diff
changeset
|
724 |
resolved_method->signature(), CHECK); |
1 | 725 |
// check if found |
726 |
if (sel_method.is_null()) { |
|
727 |
ResourceMark rm(THREAD); |
|
728 |
THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), |
|
729 |
methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()), |
|
730 |
resolved_method->name(), |
|
731 |
resolved_method->signature())); |
|
732 |
} |
|
733 |
} |
|
734 |
} |
|
735 |
||
736 |
// check if not static |
|
737 |
if (sel_method->is_static()) { |
|
9425
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6728025: LinkResolver is missing some ResourceMarks
jcoomes
parents:
9116
diff
changeset
|
738 |
ResourceMark rm(THREAD); |
1 | 739 |
char buf[200]; |
740 |
jio_snprintf(buf, sizeof(buf), "Expecting non-static method %s", methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()), |
|
741 |
resolved_method->name(), |
|
742 |
resolved_method->signature())); |
|
743 |
THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); |
|
744 |
} |
|
745 |
||
746 |
// check if abstract |
|
747 |
if (sel_method->is_abstract()) { |
|
748 |
ResourceMark rm(THREAD); |
|
749 |
THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), |
|
750 |
methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()), |
|
751 |
sel_method->name(), |
|
752 |
sel_method->signature())); |
|
753 |
} |
|
754 |
||
755 |
// setup result |
|
756 |
result.set_static(resolved_klass, sel_method, CHECK); |
|
757 |
} |
|
758 |
||
759 |
void LinkResolver::resolve_virtual_call(CallInfo& result, Handle recv, KlassHandle receiver_klass, KlassHandle resolved_klass, |
|
8076
96d498ec7ae1
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
7397
diff
changeset
|
760 |
Symbol* method_name, Symbol* method_signature, KlassHandle current_klass, |
1 | 761 |
bool check_access, bool check_null_and_abstract, TRAPS) { |
762 |
methodHandle resolved_method; |
|
763 |
linktime_resolve_virtual_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); |
|
764 |
runtime_resolve_virtual_method(result, resolved_method, resolved_klass, recv, receiver_klass, check_null_and_abstract, CHECK); |
|
765 |
} |
|
766 |
||
767 |
// throws linktime exceptions |
|
768 |
void LinkResolver::linktime_resolve_virtual_method(methodHandle &resolved_method, KlassHandle resolved_klass, |
|
8076
96d498ec7ae1
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
7397
diff
changeset
|
769 |
Symbol* method_name, Symbol* method_signature, |
1 | 770 |
KlassHandle current_klass, bool check_access, TRAPS) { |
771 |
// normal method resolution |
|
772 |
resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); |
|
773 |
||
774 |
assert(resolved_method->name() != vmSymbols::object_initializer_name(), "should have been checked in verifier"); |
|
775 |
assert(resolved_method->name() != vmSymbols::class_initializer_name (), "should have been checked in verifier"); |
|
776 |
||
777 |
// check if not static |
|
778 |
if (resolved_method->is_static()) { |
|
9425
6da66b869573
6728025: LinkResolver is missing some ResourceMarks
jcoomes
parents:
9116
diff
changeset
|
779 |
ResourceMark rm(THREAD); |
1 | 780 |
char buf[200]; |
781 |
jio_snprintf(buf, sizeof(buf), "Expecting non-static method %s", methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()), |
|
782 |
resolved_method->name(), |
|
783 |
resolved_method->signature())); |
|
784 |
THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); |
|
785 |
} |
|
786 |
} |
|
787 |
||
788 |
// throws runtime exceptions |
|
789 |
void LinkResolver::runtime_resolve_virtual_method(CallInfo& result, |
|
790 |
methodHandle resolved_method, |
|
791 |
KlassHandle resolved_klass, |
|
792 |
Handle recv, |
|
793 |
KlassHandle recv_klass, |
|
794 |
bool check_null_and_abstract, |
|
795 |
TRAPS) { |
|
796 |
||
797 |
// setup default return values |
|
798 |
int vtable_index = methodOopDesc::invalid_vtable_index; |
|
799 |
methodHandle selected_method; |
|
800 |
||
801 |
assert(recv.is_null() || recv->is_oop(), "receiver is not an oop"); |
|
802 |
||
803 |
// runtime method resolution |
|
804 |
if (check_null_and_abstract && recv.is_null()) { // check if receiver exists |
|
805 |
THROW(vmSymbols::java_lang_NullPointerException()); |
|
806 |
} |
|
807 |
||
808 |
// Virtual methods cannot be resolved before its klass has been linked, for otherwise the methodOop's |
|
809 |
// has not been rewritten, and the vtable initialized. |
|
810 |
assert(instanceKlass::cast(resolved_method->method_holder())->is_linked(), "must be linked"); |
|
811 |
||
812 |
// Virtual methods cannot be resolved before its klass has been linked, for otherwise the methodOop's |
|
813 |
// has not been rewritten, and the vtable initialized. Make sure to do this after the nullcheck, since |
|
814 |
// a missing receiver might result in a bogus lookup. |
|
815 |
assert(instanceKlass::cast(resolved_method->method_holder())->is_linked(), "must be linked"); |
|
816 |
||
817 |
// do lookup based on receiver klass using the vtable index |
|
818 |
if (resolved_method->method_holder()->klass_part()->is_interface()) { // miranda method |
|
819 |
vtable_index = vtable_index_of_miranda_method(resolved_klass, |
|
8076
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6990754: Use native memory and reference counting to implement SymbolTable
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7397
diff
changeset
|
820 |
resolved_method->name(), |
96d498ec7ae1
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
7397
diff
changeset
|
821 |
resolved_method->signature(), CHECK); |
1 | 822 |
assert(vtable_index >= 0 , "we should have valid vtable index at this point"); |
823 |
||
824 |
instanceKlass* inst = instanceKlass::cast(recv_klass()); |
|
825 |
selected_method = methodHandle(THREAD, inst->method_at_vtable(vtable_index)); |
|
826 |
} else { |
|
827 |
// at this point we are sure that resolved_method is virtual and not |
|
828 |
// a miranda method; therefore, it must have a valid vtable index. |
|
829 |
vtable_index = resolved_method->vtable_index(); |
|
830 |
// We could get a negative vtable_index for final methods, |
|
831 |
// because as an optimization they are they are never put in the vtable, |
|
832 |
// unless they override an existing method. |
|
833 |
// If we do get a negative, it means the resolved method is the the selected |
|
834 |
// method, and it can never be changed by an override. |
|
835 |
if (vtable_index == methodOopDesc::nonvirtual_vtable_index) { |
|
836 |
assert(resolved_method->can_be_statically_bound(), "cannot override this method"); |
|
837 |
selected_method = resolved_method; |
|
838 |
} else { |
|
839 |
// recv_klass might be an arrayKlassOop but all vtables start at |
|
840 |
// the same place. The cast is to avoid virtual call and assertion. |
|
841 |
instanceKlass* inst = (instanceKlass*)recv_klass()->klass_part(); |
|
842 |
selected_method = methodHandle(THREAD, inst->method_at_vtable(vtable_index)); |
|
843 |
} |
|
844 |
} |
|
845 |
||
846 |
// check if method exists |
|
847 |
if (selected_method.is_null()) { |
|
848 |
ResourceMark rm(THREAD); |
|
849 |
THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), |
|
850 |
methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()), |
|
851 |
resolved_method->name(), |
|
852 |
resolved_method->signature())); |
|
853 |
} |
|
854 |
||
855 |
// check if abstract |
|
856 |
if (check_null_and_abstract && selected_method->is_abstract()) { |
|
857 |
ResourceMark rm(THREAD); |
|
858 |
THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), |
|
859 |
methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()), |
|
860 |
selected_method->name(), |
|
861 |
selected_method->signature())); |
|
862 |
} |
|
863 |
||
864 |
// setup result |
|
865 |
result.set_virtual(resolved_klass, recv_klass, resolved_method, selected_method, vtable_index, CHECK); |
|
866 |
} |
|
867 |
||
868 |
void LinkResolver::resolve_interface_call(CallInfo& result, Handle recv, KlassHandle recv_klass, KlassHandle resolved_klass, |
|
8076
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changeset
|
869 |
Symbol* method_name, Symbol* method_signature, KlassHandle current_klass, |
1 | 870 |
bool check_access, bool check_null_and_abstract, TRAPS) { |
871 |
methodHandle resolved_method; |
|
872 |
linktime_resolve_interface_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); |
|
873 |
runtime_resolve_interface_method(result, resolved_method, resolved_klass, recv, recv_klass, check_null_and_abstract, CHECK); |
|
874 |
} |
|
875 |
||
876 |
// throws linktime exceptions |
|
8076
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changeset
|
877 |
void LinkResolver::linktime_resolve_interface_method(methodHandle& resolved_method, KlassHandle resolved_klass, Symbol* method_name, |
96d498ec7ae1
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changeset
|
878 |
Symbol* method_signature, KlassHandle current_klass, bool check_access, TRAPS) { |
1 | 879 |
// normal interface method resolution |
880 |
resolve_interface_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); |
|
881 |
||
882 |
assert(resolved_method->name() != vmSymbols::object_initializer_name(), "should have been checked in verifier"); |
|
883 |
assert(resolved_method->name() != vmSymbols::class_initializer_name (), "should have been checked in verifier"); |
|
884 |
} |
|
885 |
||
886 |
// throws runtime exceptions |
|
887 |
void LinkResolver::runtime_resolve_interface_method(CallInfo& result, methodHandle resolved_method, KlassHandle resolved_klass, |
|
888 |
Handle recv, KlassHandle recv_klass, bool check_null_and_abstract, TRAPS) { |
|
889 |
// check if receiver exists |
|
890 |
if (check_null_and_abstract && recv.is_null()) { |
|
891 |
THROW(vmSymbols::java_lang_NullPointerException()); |
|
892 |
} |
|
893 |
||
894 |
// check if receiver klass implements the resolved interface |
|
895 |
if (!recv_klass->is_subtype_of(resolved_klass())) { |
|
9425
6da66b869573
6728025: LinkResolver is missing some ResourceMarks
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diff
changeset
|
896 |
ResourceMark rm(THREAD); |
1 | 897 |
char buf[200]; |
898 |
jio_snprintf(buf, sizeof(buf), "Class %s does not implement the requested interface %s", |
|
899 |
(Klass::cast(recv_klass()))->external_name(), |
|
900 |
(Klass::cast(resolved_klass()))->external_name()); |
|
901 |
THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); |
|
902 |
} |
|
903 |
// do lookup based on receiver klass |
|
904 |
methodHandle sel_method; |
|
905 |
lookup_instance_method_in_klasses(sel_method, recv_klass, |
|
8076
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changeset
|
906 |
resolved_method->name(), |
96d498ec7ae1
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diff
changeset
|
907 |
resolved_method->signature(), CHECK); |
1 | 908 |
// check if method exists |
909 |
if (sel_method.is_null()) { |
|
910 |
ResourceMark rm(THREAD); |
|
911 |
THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), |
|
912 |
methodOopDesc::name_and_sig_as_C_string(Klass::cast(recv_klass()), |
|
913 |
resolved_method->name(), |
|
914 |
resolved_method->signature())); |
|
915 |
} |
|
916 |
// check if public |
|
917 |
if (!sel_method->is_public()) { |
|
918 |
ResourceMark rm(THREAD); |
|
919 |
THROW_MSG(vmSymbols::java_lang_IllegalAccessError(), |
|
920 |
methodOopDesc::name_and_sig_as_C_string(Klass::cast(recv_klass()), |
|
921 |
sel_method->name(), |
|
922 |
sel_method->signature())); |
|
923 |
} |
|
924 |
// check if abstract |
|
925 |
if (check_null_and_abstract && sel_method->is_abstract()) { |
|
926 |
ResourceMark rm(THREAD); |
|
927 |
THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), |
|
928 |
methodOopDesc::name_and_sig_as_C_string(Klass::cast(recv_klass()), |
|
929 |
sel_method->name(), |
|
930 |
sel_method->signature())); |
|
931 |
} |
|
932 |
// setup result |
|
933 |
result.set_interface(resolved_klass, recv_klass, resolved_method, sel_method, CHECK); |
|
934 |
} |
|
935 |
||
936 |
||
937 |
methodHandle LinkResolver::linktime_resolve_interface_method_or_null( |
|
938 |
KlassHandle resolved_klass, |
|
8076
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diff
changeset
|
939 |
Symbol* method_name, |
96d498ec7ae1
6990754: Use native memory and reference counting to implement SymbolTable
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diff
changeset
|
940 |
Symbol* method_signature, |
1 | 941 |
KlassHandle current_klass, |
942 |
bool check_access) { |
|
943 |
EXCEPTION_MARK; |
|
944 |
methodHandle method_result; |
|
945 |
linktime_resolve_interface_method(method_result, resolved_klass, method_name, method_signature, current_klass, check_access, THREAD); |
|
946 |
if (HAS_PENDING_EXCEPTION) { |
|
947 |
CLEAR_PENDING_EXCEPTION; |
|
948 |
return methodHandle(); |
|
949 |
} else { |
|
950 |
return method_result; |
|
951 |
} |
|
952 |
} |
|
953 |
||
954 |
methodHandle LinkResolver::linktime_resolve_virtual_method_or_null( |
|
955 |
KlassHandle resolved_klass, |
|
8076
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diff
changeset
|
956 |
Symbol* method_name, |
96d498ec7ae1
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diff
changeset
|
957 |
Symbol* method_signature, |
1 | 958 |
KlassHandle current_klass, |
959 |
bool check_access) { |
|
960 |
EXCEPTION_MARK; |
|
961 |
methodHandle method_result; |
|
962 |
linktime_resolve_virtual_method(method_result, resolved_klass, method_name, method_signature, current_klass, check_access, THREAD); |
|
963 |
if (HAS_PENDING_EXCEPTION) { |
|
964 |
CLEAR_PENDING_EXCEPTION; |
|
965 |
return methodHandle(); |
|
966 |
} else { |
|
967 |
return method_result; |
|
968 |
} |
|
969 |
} |
|
970 |
||
971 |
methodHandle LinkResolver::resolve_virtual_call_or_null( |
|
972 |
KlassHandle receiver_klass, |
|
973 |
KlassHandle resolved_klass, |
|
8076
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diff
changeset
|
974 |
Symbol* name, |
96d498ec7ae1
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
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diff
changeset
|
975 |
Symbol* signature, |
1 | 976 |
KlassHandle current_klass) { |
977 |
EXCEPTION_MARK; |
|
978 |
CallInfo info; |
|
979 |
resolve_virtual_call(info, Handle(), receiver_klass, resolved_klass, name, signature, current_klass, true, false, THREAD); |
|
980 |
if (HAS_PENDING_EXCEPTION) { |
|
981 |
CLEAR_PENDING_EXCEPTION; |
|
982 |
return methodHandle(); |
|
983 |
} |
|
984 |
return info.selected_method(); |
|
985 |
} |
|
986 |
||
987 |
methodHandle LinkResolver::resolve_interface_call_or_null( |
|
988 |
KlassHandle receiver_klass, |
|
989 |
KlassHandle resolved_klass, |
|
8076
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6990754: Use native memory and reference counting to implement SymbolTable
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7397
diff
changeset
|
990 |
Symbol* name, |
96d498ec7ae1
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
7397
diff
changeset
|
991 |
Symbol* signature, |
1 | 992 |
KlassHandle current_klass) { |
993 |
EXCEPTION_MARK; |
|
994 |
CallInfo info; |
|
995 |
resolve_interface_call(info, Handle(), receiver_klass, resolved_klass, name, signature, current_klass, true, false, THREAD); |
|
996 |
if (HAS_PENDING_EXCEPTION) { |
|
997 |
CLEAR_PENDING_EXCEPTION; |
|
998 |
return methodHandle(); |
|
999 |
} |
|
1000 |
return info.selected_method(); |
|
1001 |
} |
|
1002 |
||
1003 |
int LinkResolver::resolve_virtual_vtable_index( |
|
1004 |
KlassHandle receiver_klass, |
|
1005 |
KlassHandle resolved_klass, |
|
8076
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7397
diff
changeset
|
1006 |
Symbol* name, |
96d498ec7ae1
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
7397
diff
changeset
|
1007 |
Symbol* signature, |
1 | 1008 |
KlassHandle current_klass) { |
1009 |
EXCEPTION_MARK; |
|
1010 |
CallInfo info; |
|
1011 |
resolve_virtual_call(info, Handle(), receiver_klass, resolved_klass, name, signature, current_klass, true, false, THREAD); |
|
1012 |
if (HAS_PENDING_EXCEPTION) { |
|
1013 |
CLEAR_PENDING_EXCEPTION; |
|
1014 |
return methodOopDesc::invalid_vtable_index; |
|
1015 |
} |
|
1016 |
return info.vtable_index(); |
|
1017 |
} |
|
1018 |
||
1019 |
methodHandle LinkResolver::resolve_static_call_or_null( |
|
1020 |
KlassHandle resolved_klass, |
|
8076
96d498ec7ae1
6990754: Use native memory and reference counting to implement SymbolTable
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parents:
7397
diff
changeset
|
1021 |
Symbol* name, |
96d498ec7ae1
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
7397
diff
changeset
|
1022 |
Symbol* signature, |
1 | 1023 |
KlassHandle current_klass) { |
1024 |
EXCEPTION_MARK; |
|
1025 |
CallInfo info; |
|
1026 |
resolve_static_call(info, resolved_klass, name, signature, current_klass, true, false, THREAD); |
|
1027 |
if (HAS_PENDING_EXCEPTION) { |
|
1028 |
CLEAR_PENDING_EXCEPTION; |
|
1029 |
return methodHandle(); |
|
1030 |
} |
|
1031 |
return info.selected_method(); |
|
1032 |
} |
|
1033 |
||
8076
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7397
diff
changeset
|
1034 |
methodHandle LinkResolver::resolve_special_call_or_null(KlassHandle resolved_klass, Symbol* name, Symbol* signature, |
1 | 1035 |
KlassHandle current_klass) { |
1036 |
EXCEPTION_MARK; |
|
1037 |
CallInfo info; |
|
1038 |
resolve_special_call(info, resolved_klass, name, signature, current_klass, true, THREAD); |
|
1039 |
if (HAS_PENDING_EXCEPTION) { |
|
1040 |
CLEAR_PENDING_EXCEPTION; |
|
1041 |
return methodHandle(); |
|
1042 |
} |
|
1043 |
return info.selected_method(); |
|
1044 |
} |
|
1045 |
||
1046 |
||
1047 |
||
1048 |
//------------------------------------------------------------------------------------------------------------------------ |
|
1049 |
// ConstantPool entries |
|
1050 |
||
1051 |
void LinkResolver::resolve_invoke(CallInfo& result, Handle recv, constantPoolHandle pool, int index, Bytecodes::Code byte, TRAPS) { |
|
1052 |
switch (byte) { |
|
1053 |
case Bytecodes::_invokestatic : resolve_invokestatic (result, pool, index, CHECK); break; |
|
1054 |
case Bytecodes::_invokespecial : resolve_invokespecial (result, pool, index, CHECK); break; |
|
1055 |
case Bytecodes::_invokevirtual : resolve_invokevirtual (result, recv, pool, index, CHECK); break; |
|
2570
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parents:
2534
diff
changeset
|
1056 |
case Bytecodes::_invokedynamic : resolve_invokedynamic (result, pool, index, CHECK); break; |
1 | 1057 |
case Bytecodes::_invokeinterface: resolve_invokeinterface(result, recv, pool, index, CHECK); break; |
1058 |
} |
|
1059 |
return; |
|
1060 |
} |
|
1061 |
||
8076
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6990754: Use native memory and reference counting to implement SymbolTable
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7397
diff
changeset
|
1062 |
void LinkResolver::resolve_pool(KlassHandle& resolved_klass, Symbol*& method_name, Symbol*& method_signature, |
1 | 1063 |
KlassHandle& current_klass, constantPoolHandle pool, int index, TRAPS) { |
1064 |
// resolve klass |
|
1065 |
resolve_klass(resolved_klass, pool, index, CHECK); |
|
1066 |
||
1067 |
// Get name, signature, and static klass |
|
8076
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6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
7397
diff
changeset
|
1068 |
method_name = pool->name_ref_at(index); |
96d498ec7ae1
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
7397
diff
changeset
|
1069 |
method_signature = pool->signature_ref_at(index); |
1 | 1070 |
current_klass = KlassHandle(THREAD, pool->pool_holder()); |
1071 |
} |
|
1072 |
||
1073 |
||
1074 |
void LinkResolver::resolve_invokestatic(CallInfo& result, constantPoolHandle pool, int index, TRAPS) { |
|
1075 |
KlassHandle resolved_klass; |
|
8076
96d498ec7ae1
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
7397
diff
changeset
|
1076 |
Symbol* method_name = NULL; |
96d498ec7ae1
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
7397
diff
changeset
|
1077 |
Symbol* method_signature = NULL; |
1 | 1078 |
KlassHandle current_klass; |
1079 |
resolve_pool(resolved_klass, method_name, method_signature, current_klass, pool, index, CHECK); |
|
1080 |
resolve_static_call(result, resolved_klass, method_name, method_signature, current_klass, true, true, CHECK); |
|
1081 |
} |
|
1082 |
||
1083 |
||
1084 |
void LinkResolver::resolve_invokespecial(CallInfo& result, constantPoolHandle pool, int index, TRAPS) { |
|
1085 |
KlassHandle resolved_klass; |
|
8076
96d498ec7ae1
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
7397
diff
changeset
|
1086 |
Symbol* method_name = NULL; |
96d498ec7ae1
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
7397
diff
changeset
|
1087 |
Symbol* method_signature = NULL; |
1 | 1088 |
KlassHandle current_klass; |
1089 |
resolve_pool(resolved_klass, method_name, method_signature, current_klass, pool, index, CHECK); |
|
1090 |
resolve_special_call(result, resolved_klass, method_name, method_signature, current_klass, true, CHECK); |
|
1091 |
} |
|
1092 |
||
1093 |
||
1094 |
void LinkResolver::resolve_invokevirtual(CallInfo& result, Handle recv, |
|
1095 |
constantPoolHandle pool, int index, |
|
1096 |
TRAPS) { |
|
1097 |
||
1098 |
KlassHandle resolved_klass; |
|
8076
96d498ec7ae1
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
7397
diff
changeset
|
1099 |
Symbol* method_name = NULL; |
96d498ec7ae1
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
7397
diff
changeset
|
1100 |
Symbol* method_signature = NULL; |
1 | 1101 |
KlassHandle current_klass; |
1102 |
resolve_pool(resolved_klass, method_name, method_signature, current_klass, pool, index, CHECK); |
|
1103 |
KlassHandle recvrKlass (THREAD, recv.is_null() ? (klassOop)NULL : recv->klass()); |
|
1104 |
resolve_virtual_call(result, recv, recvrKlass, resolved_klass, method_name, method_signature, current_klass, true, true, CHECK); |
|
1105 |
} |
|
1106 |
||
1107 |
||
1108 |
void LinkResolver::resolve_invokeinterface(CallInfo& result, Handle recv, constantPoolHandle pool, int index, TRAPS) { |
|
1109 |
KlassHandle resolved_klass; |
|
8076
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6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
7397
diff
changeset
|
1110 |
Symbol* method_name = NULL; |
96d498ec7ae1
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
7397
diff
changeset
|
1111 |
Symbol* method_signature = NULL; |
1 | 1112 |
KlassHandle current_klass; |
1113 |
resolve_pool(resolved_klass, method_name, method_signature, current_klass, pool, index, CHECK); |
|
1114 |
KlassHandle recvrKlass (THREAD, recv.is_null() ? (klassOop)NULL : recv->klass()); |
|
1115 |
resolve_interface_call(result, recv, recvrKlass, resolved_klass, method_name, method_signature, current_klass, true, true, CHECK); |
|
1116 |
} |
|
1117 |
||
2570
ecc7862946d4
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
2534
diff
changeset
|
1118 |
|
ecc7862946d4
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
2534
diff
changeset
|
1119 |
void LinkResolver::resolve_invokedynamic(CallInfo& result, constantPoolHandle pool, int raw_index, TRAPS) { |
ecc7862946d4
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
2534
diff
changeset
|
1120 |
assert(EnableInvokeDynamic, ""); |
ecc7862946d4
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
2534
diff
changeset
|
1121 |
|
ecc7862946d4
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
2534
diff
changeset
|
1122 |
// This guy is reached from InterpreterRuntime::resolve_invokedynamic. |
ecc7862946d4
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
2534
diff
changeset
|
1123 |
|
ecc7862946d4
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
2534
diff
changeset
|
1124 |
// At this point, we only need the signature, and can ignore the name. |
8076
96d498ec7ae1
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
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7397
diff
changeset
|
1125 |
Symbol* method_signature = pool->signature_ref_at(raw_index); // raw_index works directly |
96d498ec7ae1
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
7397
diff
changeset
|
1126 |
Symbol* method_name = vmSymbols::invokeExact_name(); |
2570
ecc7862946d4
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
2534
diff
changeset
|
1127 |
KlassHandle resolved_klass = SystemDictionaryHandles::MethodHandle_klass(); |
ecc7862946d4
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
2534
diff
changeset
|
1128 |
|
5420
586d3988e72b
6939134: JSR 292 adjustments to method handle invocation
jrose
parents:
4571
diff
changeset
|
1129 |
// JSR 292: this must be an implicitly generated method MethodHandle.invokeExact(*...) |
2570
ecc7862946d4
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
2534
diff
changeset
|
1130 |
// The extra MH receiver will be inserted into the stack on every call. |
ecc7862946d4
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
2534
diff
changeset
|
1131 |
methodHandle resolved_method; |
5421
e294db54fc0d
6939196: method handle signatures off the boot class path get linkage errors
jrose
parents:
5420
diff
changeset
|
1132 |
KlassHandle current_klass(THREAD, pool->pool_holder()); |
9967
9ddc1c490930
7049415: Failure of resolution of sym.reference to the c.s.s. should be wrapped in BootstrapMethodError
jrose
parents:
9425
diff
changeset
|
1133 |
lookup_implicit_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, THREAD); |
9ddc1c490930
7049415: Failure of resolution of sym.reference to the c.s.s. should be wrapped in BootstrapMethodError
jrose
parents:
9425
diff
changeset
|
1134 |
if (HAS_PENDING_EXCEPTION) { |
9ddc1c490930
7049415: Failure of resolution of sym.reference to the c.s.s. should be wrapped in BootstrapMethodError
jrose
parents:
9425
diff
changeset
|
1135 |
if (PENDING_EXCEPTION->is_a(SystemDictionary::BootstrapMethodError_klass())) { |
9ddc1c490930
7049415: Failure of resolution of sym.reference to the c.s.s. should be wrapped in BootstrapMethodError
jrose
parents:
9425
diff
changeset
|
1136 |
// throw these guys, since they are already wrapped |
9ddc1c490930
7049415: Failure of resolution of sym.reference to the c.s.s. should be wrapped in BootstrapMethodError
jrose
parents:
9425
diff
changeset
|
1137 |
return; |
9ddc1c490930
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1138 |
} |
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|
1139 |
if (!PENDING_EXCEPTION->is_a(SystemDictionary::LinkageError_klass())) { |
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|
1140 |
// intercept only LinkageErrors which might have failed to wrap |
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|
1141 |
return; |
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|
1142 |
} |
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|
1143 |
// See the "Linking Exceptions" section for the invokedynamic instruction in the JVMS. |
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|
1144 |
Handle ex(THREAD, PENDING_EXCEPTION); |
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|
1145 |
CLEAR_PENDING_EXCEPTION; |
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|
1146 |
oop bsme = Klass::cast(SystemDictionary::BootstrapMethodError_klass())->java_mirror(); |
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|
1147 |
MethodHandles::raise_exception(Bytecodes::_athrow, ex(), bsme, CHECK); |
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|
1148 |
// java code should not return, but if it does throw out anyway |
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|
1149 |
THROW(vmSymbols::java_lang_InternalError()); |
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|
1150 |
} |
2570
ecc7862946d4
6655646: dynamic languages need dynamically linked call sites
jrose
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2534
diff
changeset
|
1151 |
if (resolved_method.is_null()) { |
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|
1152 |
THROW(vmSymbols::java_lang_InternalError()); |
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|
1153 |
} |
6062
bab93afe9df7
6964498: JSR 292 invokedynamic sites need local bootstrap methods
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diff
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|
1154 |
result.set_dynamic(resolved_method, CHECK); |
2570
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|
1155 |
} |
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|
1156 |
|
1 | 1157 |
//------------------------------------------------------------------------------------------------------------------------ |
1158 |
#ifndef PRODUCT |
|
1159 |
||
1160 |
void FieldAccessInfo::print() { |
|
1161 |
ResourceMark rm; |
|
1162 |
tty->print_cr("Field %s@%d", name()->as_C_string(), field_offset()); |
|
1163 |
} |
|
1164 |
||
1165 |
#endif |