author | jrose |
Sat, 09 Apr 2011 22:55:25 -0700 | |
changeset 9134 | 189a8c094016 |
parent 9116 | 9bc44be338d6 |
child 9323 | 20cc2230dc8a |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2008, 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/symbolTable.hpp" |
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#include "interpreter/interpreter.hpp" |
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#include "memory/allocation.inline.hpp" |
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#include "memory/oopFactory.hpp" |
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#include "prims/methodHandles.hpp" |
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#include "runtime/javaCalls.hpp" |
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#include "runtime/reflection.hpp" |
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#include "runtime/signature.hpp" |
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#include "runtime/stubRoutines.hpp" |
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/* |
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* JSR 292 reference implementation: method handles |
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*/ |
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bool MethodHandles::_enabled = false; // set true after successful native linkage |
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MethodHandleEntry* MethodHandles::_entries[MethodHandles::_EK_LIMIT] = {NULL}; |
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const char* MethodHandles::_entry_names[_EK_LIMIT+1] = { |
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"raise_exception", |
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"invokestatic", // how a MH emulates invokestatic |
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"invokespecial", // ditto for the other invokes... |
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"invokevirtual", |
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"invokeinterface", |
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"bound_ref", // these are for BMH... |
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"bound_int", |
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"bound_long", |
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"bound_ref_direct", // (direct versions have a direct methodOop) |
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"bound_int_direct", |
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"bound_long_direct", |
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// starting at _adapter_mh_first: |
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"adapter_retype_only", // these are for AMH... |
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"adapter_retype_raw", |
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"adapter_check_cast", |
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"adapter_prim_to_prim", |
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"adapter_ref_to_prim", |
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"adapter_prim_to_ref", |
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"adapter_swap_args", |
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"adapter_rot_args", |
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"adapter_dup_args", |
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"adapter_drop_args", |
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"adapter_collect_args", |
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"adapter_spread_args", |
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"adapter_flyby", |
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"adapter_ricochet", |
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// optimized adapter types: |
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"adapter_swap_args/1", |
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"adapter_swap_args/2", |
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"adapter_rot_args/1,up", |
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"adapter_rot_args/1,down", |
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"adapter_rot_args/2,up", |
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"adapter_rot_args/2,down", |
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"adapter_prim_to_prim/i2i", |
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"adapter_prim_to_prim/l2i", |
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"adapter_prim_to_prim/d2f", |
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"adapter_prim_to_prim/i2l", |
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"adapter_prim_to_prim/f2d", |
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"adapter_ref_to_prim/unboxi", |
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"adapter_ref_to_prim/unboxl", |
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"adapter_spread_args/0", |
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"adapter_spread_args/1", |
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"adapter_spread_args/more", |
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NULL |
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}; |
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// Adapters. |
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MethodHandlesAdapterBlob* MethodHandles::_adapter_code = NULL; |
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int MethodHandles::_adapter_code_size = StubRoutines::method_handles_adapters_code_size; |
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jobject MethodHandles::_raise_exception_method; |
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#ifdef ASSERT |
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bool MethodHandles::spot_check_entry_names() { |
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assert(!strcmp(entry_name(_invokestatic_mh), "invokestatic"), ""); |
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assert(!strcmp(entry_name(_bound_ref_mh), "bound_ref"), ""); |
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assert(!strcmp(entry_name(_adapter_retype_only), "adapter_retype_only"), ""); |
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assert(!strcmp(entry_name(_adapter_ricochet), "adapter_ricochet"), ""); |
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assert(!strcmp(entry_name(_adapter_opt_unboxi), "adapter_ref_to_prim/unboxi"), ""); |
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return true; |
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} |
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#endif |
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//------------------------------------------------------------------------------ |
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// MethodHandles::generate_adapters |
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// |
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void MethodHandles::generate_adapters() { |
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if (!EnableInvokeDynamic || SystemDictionary::MethodHandle_klass() == NULL) return; |
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assert(_adapter_code == NULL, "generate only once"); |
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|
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ResourceMark rm; |
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TraceTime timer("MethodHandles adapters generation", TraceStartupTime); |
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_adapter_code = MethodHandlesAdapterBlob::create(_adapter_code_size); |
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if (_adapter_code == NULL) |
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vm_exit_out_of_memory(_adapter_code_size, "CodeCache: no room for MethodHandles adapters"); |
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CodeBuffer code(_adapter_code); |
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MethodHandlesAdapterGenerator g(&code); |
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g.generate(); |
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} |
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//------------------------------------------------------------------------------ |
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// MethodHandlesAdapterGenerator::generate |
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// |
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void MethodHandlesAdapterGenerator::generate() { |
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// Generate generic method handle adapters. |
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for (MethodHandles::EntryKind ek = MethodHandles::_EK_FIRST; |
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ek < MethodHandles::_EK_LIMIT; |
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ek = MethodHandles::EntryKind(1 + (int)ek)) { |
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StubCodeMark mark(this, "MethodHandle", MethodHandles::entry_name(ek)); |
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MethodHandles::generate_method_handle_stub(_masm, ek); |
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} |
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} |
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void MethodHandles::set_enabled(bool z) { |
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if (_enabled != z) { |
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guarantee(z && EnableInvokeDynamic, "can only enable once, and only if -XX:+EnableInvokeDynamic"); |
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_enabled = z; |
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} |
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} |
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// Note: A method which does not have a TRAPS argument cannot block in the GC |
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// or throw exceptions. Such methods are used in this file to do something quick |
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// and local, like parse a data structure. For speed, such methods work on plain |
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// oops, not handles. Trapping methods uniformly operate on handles. |
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methodOop MethodHandles::decode_vmtarget(oop vmtarget, int vmindex, oop mtype, |
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klassOop& receiver_limit_result, int& decode_flags_result) { |
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if (vmtarget == NULL) return NULL; |
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assert(methodOopDesc::nonvirtual_vtable_index < 0, "encoding"); |
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if (vmindex < 0) { |
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// this DMH performs no dispatch; it is directly bound to a methodOop |
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// A MemberName may either be directly bound to a methodOop, |
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// or it may use the klass/index form; both forms mean the same thing. |
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methodOop m = decode_methodOop(methodOop(vmtarget), decode_flags_result); |
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if ((decode_flags_result & _dmf_has_receiver) != 0 |
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&& java_lang_invoke_MethodType::is_instance(mtype)) { |
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// Extract receiver type restriction from mtype.ptypes[0]. |
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objArrayOop ptypes = java_lang_invoke_MethodType::ptypes(mtype); |
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oop ptype0 = (ptypes == NULL || ptypes->length() < 1) ? oop(NULL) : ptypes->obj_at(0); |
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if (java_lang_Class::is_instance(ptype0)) |
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receiver_limit_result = java_lang_Class::as_klassOop(ptype0); |
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} |
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if (vmindex == methodOopDesc::nonvirtual_vtable_index) { |
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// this DMH can be an "invokespecial" version |
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decode_flags_result &= ~_dmf_does_dispatch; |
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} else { |
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assert(vmindex == methodOopDesc::invalid_vtable_index, "random vmindex?"); |
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} |
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return m; |
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} else { |
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assert(vmtarget->is_klass(), "must be class or interface"); |
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decode_flags_result |= MethodHandles::_dmf_does_dispatch; |
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decode_flags_result |= MethodHandles::_dmf_has_receiver; |
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receiver_limit_result = (klassOop)vmtarget; |
185 |
Klass* tk = Klass::cast((klassOop)vmtarget); |
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if (tk->is_interface()) { |
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// an itable linkage is <interface, itable index> |
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decode_flags_result |= MethodHandles::_dmf_from_interface; |
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return klassItable::method_for_itable_index((klassOop)vmtarget, vmindex); |
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} else { |
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if (!tk->oop_is_instance()) |
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tk = instanceKlass::cast(SystemDictionary::Object_klass()); |
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return ((instanceKlass*)tk)->method_at_vtable(vmindex); |
194 |
} |
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} |
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} |
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// MemberName and DirectMethodHandle have the same linkage to the JVM internals. |
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// (MemberName is the non-operational name used for queries and setup.) |
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methodOop MethodHandles::decode_DirectMethodHandle(oop mh, klassOop& receiver_limit_result, int& decode_flags_result) { |
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oop vmtarget = java_lang_invoke_DirectMethodHandle::vmtarget(mh); |
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int vmindex = java_lang_invoke_DirectMethodHandle::vmindex(mh); |
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oop mtype = java_lang_invoke_DirectMethodHandle::type(mh); |
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return decode_vmtarget(vmtarget, vmindex, mtype, receiver_limit_result, decode_flags_result); |
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} |
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methodOop MethodHandles::decode_BoundMethodHandle(oop mh, klassOop& receiver_limit_result, int& decode_flags_result) { |
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assert(java_lang_invoke_BoundMethodHandle::is_instance(mh), ""); |
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assert(mh->klass() != SystemDictionary::AdapterMethodHandle_klass(), ""); |
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for (oop bmh = mh;;) { |
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// Bound MHs can be stacked to bind several arguments. |
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oop target = java_lang_invoke_MethodHandle::vmtarget(bmh); |
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if (target == NULL) return NULL; |
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decode_flags_result |= MethodHandles::_dmf_binds_argument; |
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klassOop tk = target->klass(); |
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217 |
if (tk == SystemDictionary::BoundMethodHandle_klass()) { |
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bmh = target; |
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continue; |
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} else { |
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if (java_lang_invoke_MethodHandle::is_subclass(tk)) { |
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//assert(tk == SystemDictionary::DirectMethodHandle_klass(), "end of BMH chain must be DMH"); |
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return decode_MethodHandle(target, receiver_limit_result, decode_flags_result); |
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} else { |
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// Optimized case: binding a receiver to a non-dispatched DMH |
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// short-circuits directly to the methodOop. |
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// (It might be another argument besides a receiver also.) |
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assert(target->is_method(), "must be a simple method"); |
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decode_flags_result |= MethodHandles::_dmf_binds_method; |
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methodOop m = (methodOop) target; |
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if (!m->is_static()) |
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decode_flags_result |= MethodHandles::_dmf_has_receiver; |
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return m; |
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} |
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} |
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} |
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} |
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||
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methodOop MethodHandles::decode_AdapterMethodHandle(oop mh, klassOop& receiver_limit_result, int& decode_flags_result) { |
|
240 |
assert(mh->klass() == SystemDictionary::AdapterMethodHandle_klass(), ""); |
|
241 |
for (oop amh = mh;;) { |
|
242 |
// Adapter MHs can be stacked to convert several arguments. |
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int conv_op = adapter_conversion_op(java_lang_invoke_AdapterMethodHandle::conversion(amh)); |
2534 | 244 |
decode_flags_result |= (_dmf_adapter_lsb << conv_op) & _DMF_ADAPTER_MASK; |
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oop target = java_lang_invoke_MethodHandle::vmtarget(amh); |
2534 | 246 |
if (target == NULL) return NULL; |
247 |
klassOop tk = target->klass(); |
|
248 |
if (tk == SystemDictionary::AdapterMethodHandle_klass()) { |
|
249 |
amh = target; |
|
250 |
continue; |
|
251 |
} else { |
|
252 |
// must be a BMH (which will bind some more arguments) or a DMH (for the final call) |
|
253 |
return MethodHandles::decode_MethodHandle(target, receiver_limit_result, decode_flags_result); |
|
254 |
} |
|
255 |
} |
|
256 |
} |
|
257 |
||
258 |
methodOop MethodHandles::decode_MethodHandle(oop mh, klassOop& receiver_limit_result, int& decode_flags_result) { |
|
259 |
if (mh == NULL) return NULL; |
|
260 |
klassOop mhk = mh->klass(); |
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assert(java_lang_invoke_MethodHandle::is_subclass(mhk), "must be a MethodHandle"); |
2534 | 262 |
if (mhk == SystemDictionary::DirectMethodHandle_klass()) { |
263 |
return decode_DirectMethodHandle(mh, receiver_limit_result, decode_flags_result); |
|
264 |
} else if (mhk == SystemDictionary::BoundMethodHandle_klass()) { |
|
265 |
return decode_BoundMethodHandle(mh, receiver_limit_result, decode_flags_result); |
|
266 |
} else if (mhk == SystemDictionary::AdapterMethodHandle_klass()) { |
|
267 |
return decode_AdapterMethodHandle(mh, receiver_limit_result, decode_flags_result); |
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} else if (java_lang_invoke_BoundMethodHandle::is_subclass(mhk)) { |
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// could be a JavaMethodHandle (but not an adapter MH) |
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return decode_BoundMethodHandle(mh, receiver_limit_result, decode_flags_result); |
2534 | 271 |
} else { |
272 |
assert(false, "cannot parse this MH"); |
|
273 |
return NULL; // random MH? |
|
274 |
} |
|
275 |
} |
|
276 |
||
277 |
methodOop MethodHandles::decode_methodOop(methodOop m, int& decode_flags_result) { |
|
278 |
assert(m->is_method(), ""); |
|
279 |
if (m->is_static()) { |
|
280 |
// check that signature begins '(L' or '([' (not '(I', '()', etc.) |
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Symbol* sig = m->signature(); |
2534 | 282 |
BasicType recv_bt = char2type(sig->byte_at(1)); |
283 |
// Note: recv_bt might be T_ILLEGAL if byte_at(2) is ')' |
|
284 |
assert(sig->byte_at(0) == '(', "must be method sig"); |
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// if (recv_bt == T_OBJECT || recv_bt == T_ARRAY) |
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// decode_flags_result |= _dmf_has_receiver; |
2534 | 287 |
} else { |
288 |
// non-static method |
|
289 |
decode_flags_result |= _dmf_has_receiver; |
|
290 |
if (!m->can_be_statically_bound() && !m->is_initializer()) { |
|
291 |
decode_flags_result |= _dmf_does_dispatch; |
|
292 |
if (Klass::cast(m->method_holder())->is_interface()) |
|
293 |
decode_flags_result |= _dmf_from_interface; |
|
294 |
} |
|
295 |
} |
|
296 |
return m; |
|
297 |
} |
|
298 |
||
299 |
||
300 |
// A trusted party is handing us a cookie to determine a method. |
|
301 |
// Let's boil it down to the method oop they really want. |
|
302 |
methodOop MethodHandles::decode_method(oop x, klassOop& receiver_limit_result, int& decode_flags_result) { |
|
303 |
decode_flags_result = 0; |
|
304 |
receiver_limit_result = NULL; |
|
305 |
klassOop xk = x->klass(); |
|
306 |
if (xk == Universe::methodKlassObj()) { |
|
307 |
return decode_methodOop((methodOop) x, decode_flags_result); |
|
308 |
} else if (xk == SystemDictionary::MemberName_klass()) { |
|
309 |
// Note: This only works if the MemberName has already been resolved. |
|
310 |
return decode_MemberName(x, receiver_limit_result, decode_flags_result); |
|
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} else if (java_lang_invoke_MethodHandle::is_subclass(xk)) { |
2534 | 312 |
return decode_MethodHandle(x, receiver_limit_result, decode_flags_result); |
4571 | 313 |
} else if (xk == SystemDictionary::reflect_Method_klass()) { |
2534 | 314 |
oop clazz = java_lang_reflect_Method::clazz(x); |
315 |
int slot = java_lang_reflect_Method::slot(x); |
|
316 |
klassOop k = java_lang_Class::as_klassOop(clazz); |
|
317 |
if (k != NULL && Klass::cast(k)->oop_is_instance()) |
|
318 |
return decode_methodOop(instanceKlass::cast(k)->method_with_idnum(slot), |
|
319 |
decode_flags_result); |
|
4571 | 320 |
} else if (xk == SystemDictionary::reflect_Constructor_klass()) { |
2534 | 321 |
oop clazz = java_lang_reflect_Constructor::clazz(x); |
322 |
int slot = java_lang_reflect_Constructor::slot(x); |
|
323 |
klassOop k = java_lang_Class::as_klassOop(clazz); |
|
324 |
if (k != NULL && Klass::cast(k)->oop_is_instance()) |
|
325 |
return decode_methodOop(instanceKlass::cast(k)->method_with_idnum(slot), |
|
326 |
decode_flags_result); |
|
327 |
} else { |
|
328 |
// unrecognized object |
|
329 |
assert(!x->is_method(), "already checked"); |
|
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330 |
assert(!java_lang_invoke_MemberName::is_instance(x), "already checked"); |
2534 | 331 |
} |
332 |
return NULL; |
|
333 |
} |
|
334 |
||
335 |
||
336 |
int MethodHandles::decode_MethodHandle_stack_pushes(oop mh) { |
|
337 |
if (mh->klass() == SystemDictionary::DirectMethodHandle_klass()) |
|
338 |
return 0; // no push/pop |
|
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339 |
int this_vmslots = java_lang_invoke_MethodHandle::vmslots(mh); |
2534 | 340 |
int last_vmslots = 0; |
341 |
oop last_mh = mh; |
|
342 |
for (;;) { |
|
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343 |
oop target = java_lang_invoke_MethodHandle::vmtarget(last_mh); |
2534 | 344 |
if (target->klass() == SystemDictionary::DirectMethodHandle_klass()) { |
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345 |
last_vmslots = java_lang_invoke_MethodHandle::vmslots(target); |
2534 | 346 |
break; |
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|
347 |
} else if (!java_lang_invoke_MethodHandle::is_instance(target)) { |
2534 | 348 |
// might be klass or method |
349 |
assert(target->is_method(), "must get here with a direct ref to method"); |
|
350 |
last_vmslots = methodOop(target)->size_of_parameters(); |
|
351 |
break; |
|
352 |
} |
|
353 |
last_mh = target; |
|
354 |
} |
|
355 |
// If I am called with fewer VM slots than my ultimate callee, |
|
356 |
// it must be that I push the additionally needed slots. |
|
357 |
// Likewise if am called with more VM slots, I will pop them. |
|
358 |
return (last_vmslots - this_vmslots); |
|
359 |
} |
|
360 |
||
361 |
||
362 |
// MemberName support |
|
363 |
||
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|
364 |
// import java_lang_invoke_MemberName.* |
2534 | 365 |
enum { |
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366 |
IS_METHOD = java_lang_invoke_MemberName::MN_IS_METHOD, |
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367 |
IS_CONSTRUCTOR = java_lang_invoke_MemberName::MN_IS_CONSTRUCTOR, |
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368 |
IS_FIELD = java_lang_invoke_MemberName::MN_IS_FIELD, |
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369 |
IS_TYPE = java_lang_invoke_MemberName::MN_IS_TYPE, |
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370 |
SEARCH_SUPERCLASSES = java_lang_invoke_MemberName::MN_SEARCH_SUPERCLASSES, |
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|
371 |
SEARCH_INTERFACES = java_lang_invoke_MemberName::MN_SEARCH_INTERFACES, |
2534 | 372 |
ALL_KINDS = IS_METHOD | IS_CONSTRUCTOR | IS_FIELD | IS_TYPE, |
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373 |
VM_INDEX_UNINITIALIZED = java_lang_invoke_MemberName::VM_INDEX_UNINITIALIZED |
2534 | 374 |
}; |
375 |
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376 |
Handle MethodHandles::new_MemberName(TRAPS) { |
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|
377 |
Handle empty; |
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|
378 |
instanceKlassHandle k(THREAD, SystemDictionary::MemberName_klass()); |
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|
379 |
if (!k->is_initialized()) k->initialize(CHECK_(empty)); |
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|
380 |
return Handle(THREAD, k->allocate_instance(THREAD)); |
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|
381 |
} |
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|
382 |
|
2534 | 383 |
void MethodHandles::init_MemberName(oop mname_oop, oop target_oop) { |
4571 | 384 |
if (target_oop->klass() == SystemDictionary::reflect_Field_klass()) { |
2534 | 385 |
oop clazz = java_lang_reflect_Field::clazz(target_oop); // fd.field_holder() |
386 |
int slot = java_lang_reflect_Field::slot(target_oop); // fd.index() |
|
387 |
int mods = java_lang_reflect_Field::modifiers(target_oop); |
|
388 |
klassOop k = java_lang_Class::as_klassOop(clazz); |
|
389 |
int offset = instanceKlass::cast(k)->offset_from_fields(slot); |
|
390 |
init_MemberName(mname_oop, k, accessFlags_from(mods), offset); |
|
391 |
} else { |
|
392 |
int decode_flags = 0; klassOop receiver_limit = NULL; |
|
393 |
methodOop m = MethodHandles::decode_method(target_oop, |
|
394 |
receiver_limit, decode_flags); |
|
395 |
bool do_dispatch = ((decode_flags & MethodHandles::_dmf_does_dispatch) != 0); |
|
396 |
init_MemberName(mname_oop, m, do_dispatch); |
|
397 |
} |
|
398 |
} |
|
399 |
||
400 |
void MethodHandles::init_MemberName(oop mname_oop, methodOop m, bool do_dispatch) { |
|
401 |
int flags = ((m->is_initializer() ? IS_CONSTRUCTOR : IS_METHOD) |
|
402 |
| (jushort)( m->access_flags().as_short() & JVM_RECOGNIZED_METHOD_MODIFIERS )); |
|
403 |
oop vmtarget = m; |
|
404 |
int vmindex = methodOopDesc::invalid_vtable_index; // implies no info yet |
|
405 |
if (!do_dispatch || (flags & IS_CONSTRUCTOR) || m->can_be_statically_bound()) |
|
406 |
vmindex = methodOopDesc::nonvirtual_vtable_index; // implies never any dispatch |
|
407 |
assert(vmindex != VM_INDEX_UNINITIALIZED, "Java sentinel value"); |
|
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|
408 |
java_lang_invoke_MemberName::set_vmtarget(mname_oop, vmtarget); |
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|
409 |
java_lang_invoke_MemberName::set_vmindex(mname_oop, vmindex); |
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|
410 |
java_lang_invoke_MemberName::set_flags(mname_oop, flags); |
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|
411 |
java_lang_invoke_MemberName::set_clazz(mname_oop, Klass::cast(m->method_holder())->java_mirror()); |
2534 | 412 |
} |
413 |
||
414 |
void MethodHandles::init_MemberName(oop mname_oop, klassOop field_holder, AccessFlags mods, int offset) { |
|
415 |
int flags = (IS_FIELD | (jushort)( mods.as_short() & JVM_RECOGNIZED_FIELD_MODIFIERS )); |
|
416 |
oop vmtarget = field_holder; |
|
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|
417 |
int vmindex = offset; // determines the field uniquely when combined with static bit |
2534 | 418 |
assert(vmindex != VM_INDEX_UNINITIALIZED, "bad alias on vmindex"); |
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|
419 |
java_lang_invoke_MemberName::set_vmtarget(mname_oop, vmtarget); |
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|
420 |
java_lang_invoke_MemberName::set_vmindex(mname_oop, vmindex); |
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|
421 |
java_lang_invoke_MemberName::set_flags(mname_oop, flags); |
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|
422 |
java_lang_invoke_MemberName::set_clazz(mname_oop, Klass::cast(field_holder)->java_mirror()); |
2534 | 423 |
} |
424 |
||
425 |
||
426 |
methodOop MethodHandles::decode_MemberName(oop mname, klassOop& receiver_limit_result, int& decode_flags_result) { |
|
8676
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|
427 |
int flags = java_lang_invoke_MemberName::flags(mname); |
2534 | 428 |
if ((flags & (IS_METHOD | IS_CONSTRUCTOR)) == 0) return NULL; // not invocable |
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|
429 |
oop vmtarget = java_lang_invoke_MemberName::vmtarget(mname); |
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|
430 |
int vmindex = java_lang_invoke_MemberName::vmindex(mname); |
2534 | 431 |
if (vmindex == VM_INDEX_UNINITIALIZED) return NULL; // not resolved |
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|
432 |
methodOop m = decode_vmtarget(vmtarget, vmindex, NULL, receiver_limit_result, decode_flags_result); |
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|
433 |
oop clazz = java_lang_invoke_MemberName::clazz(mname); |
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|
434 |
if (clazz != NULL && java_lang_Class::is_instance(clazz)) { |
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|
435 |
klassOop klass = java_lang_Class::as_klassOop(clazz); |
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|
436 |
if (klass != NULL) receiver_limit_result = klass; |
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|
437 |
} |
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|
438 |
return m; |
2534 | 439 |
} |
440 |
||
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|
441 |
// convert the external string or reflective type to an internal signature |
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|
442 |
Symbol* MethodHandles::convert_to_signature(oop type_str, |
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|
443 |
bool polymorphic, |
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|
444 |
TRAPS) { |
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|
445 |
if (java_lang_invoke_MethodType::is_instance(type_str)) { |
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|
446 |
return java_lang_invoke_MethodType::as_signature(type_str, polymorphic, CHECK_NULL); |
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|
447 |
} else if (java_lang_Class::is_instance(type_str)) { |
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|
448 |
return java_lang_Class::as_signature(type_str, false, CHECK_NULL); |
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|
449 |
} else if (java_lang_String::is_instance(type_str)) { |
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|
450 |
if (polymorphic) { |
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|
451 |
return java_lang_String::as_symbol(type_str, CHECK_NULL); |
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|
452 |
} else { |
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changeset
|
453 |
return java_lang_String::as_symbol_or_null(type_str); |
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|
454 |
} |
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|
455 |
} else { |
96d498ec7ae1
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|
456 |
THROW_MSG_(vmSymbols::java_lang_InternalError(), "unrecognized type", NULL); |
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|
457 |
} |
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changeset
|
458 |
} |
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|
459 |
|
2534 | 460 |
// An unresolved member name is a mere symbolic reference. |
461 |
// Resolving it plants a vmtarget/vmindex in it, |
|
462 |
// which refers dirctly to JVM internals. |
|
463 |
void MethodHandles::resolve_MemberName(Handle mname, TRAPS) { |
|
8676
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|
464 |
assert(java_lang_invoke_MemberName::is_instance(mname()), ""); |
2534 | 465 |
#ifdef ASSERT |
466 |
// If this assert throws, renegotiate the sentinel value used by the Java code, |
|
467 |
// so that it is distinct from any valid vtable index value, and any special |
|
468 |
// values defined in methodOopDesc::VtableIndexFlag. |
|
469 |
// The point of the slop is to give the Java code and the JVM some room |
|
470 |
// to independently specify sentinel values. |
|
471 |
const int sentinel_slop = 10; |
|
472 |
const int sentinel_limit = methodOopDesc::highest_unused_vtable_index_value - sentinel_slop; |
|
473 |
assert(VM_INDEX_UNINITIALIZED < sentinel_limit, "Java sentinel != JVM sentinels"); |
|
474 |
#endif |
|
8676
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|
475 |
if (java_lang_invoke_MemberName::vmindex(mname()) != VM_INDEX_UNINITIALIZED) |
2534 | 476 |
return; // already resolved |
8676
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changeset
|
477 |
oop defc_oop = java_lang_invoke_MemberName::clazz(mname()); |
9098d4e927e1
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changeset
|
478 |
oop name_str = java_lang_invoke_MemberName::name(mname()); |
9098d4e927e1
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changeset
|
479 |
oop type_str = java_lang_invoke_MemberName::type(mname()); |
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changeset
|
480 |
int flags = java_lang_invoke_MemberName::flags(mname()); |
2534 | 481 |
|
482 |
if (defc_oop == NULL || name_str == NULL || type_str == NULL) { |
|
483 |
THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "nothing to resolve"); |
|
484 |
} |
|
485 |
klassOop defc_klassOop = java_lang_Class::as_klassOop(defc_oop); |
|
486 |
defc_oop = NULL; // safety |
|
487 |
if (defc_klassOop == NULL) return; // a primitive; no resolution possible |
|
488 |
if (!Klass::cast(defc_klassOop)->oop_is_instance()) { |
|
489 |
if (!Klass::cast(defc_klassOop)->oop_is_array()) return; |
|
4571 | 490 |
defc_klassOop = SystemDictionary::Object_klass(); |
2534 | 491 |
} |
492 |
instanceKlassHandle defc(THREAD, defc_klassOop); |
|
493 |
defc_klassOop = NULL; // safety |
|
494 |
if (defc.is_null()) { |
|
495 |
THROW_MSG(vmSymbols::java_lang_InternalError(), "primitive class"); |
|
496 |
} |
|
497 |
defc->link_class(CHECK); |
|
498 |
||
499 |
// convert the external string name to an internal symbol |
|
8076
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|
500 |
TempNewSymbol name = java_lang_String::as_symbol_or_null(name_str); |
96d498ec7ae1
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changeset
|
501 |
if (name == NULL) return; // no such name |
2534 | 502 |
name_str = NULL; // safety |
503 |
||
5421
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changeset
|
504 |
Handle polymorphic_method_type; |
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diff
changeset
|
505 |
bool polymorphic_signature = false; |
e294db54fc0d
6939196: method handle signatures off the boot class path get linkage errors
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changeset
|
506 |
if ((flags & ALL_KINDS) == IS_METHOD && |
7426
dba53a0065f8
7001363: java/dyn/InvokeDynamic should not be a well-known class in the JVM
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7397
diff
changeset
|
507 |
(defc() == SystemDictionary::MethodHandle_klass() && |
8076
96d498ec7ae1
6990754: Use native memory and reference counting to implement SymbolTable
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changeset
|
508 |
methodOopDesc::is_method_handle_invoke_name(name))) |
5421
e294db54fc0d
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parents:
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diff
changeset
|
509 |
polymorphic_signature = true; |
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diff
changeset
|
510 |
|
2534 | 511 |
// convert the external string or reflective type to an internal signature |
8076
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changeset
|
512 |
TempNewSymbol type = convert_to_signature(type_str, polymorphic_signature, CHECK); |
8676
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diff
changeset
|
513 |
if (java_lang_invoke_MethodType::is_instance(type_str) && polymorphic_signature) { |
8076
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6990754: Use native memory and reference counting to implement SymbolTable
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7887
diff
changeset
|
514 |
polymorphic_method_type = Handle(THREAD, type_str); //preserve exactly |
2534 | 515 |
} |
8076
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changeset
|
516 |
|
96d498ec7ae1
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changeset
|
517 |
if (type == NULL) return; // no such signature exists in the VM |
2534 | 518 |
type_str = NULL; // safety |
519 |
||
520 |
// Time to do the lookup. |
|
521 |
switch (flags & ALL_KINDS) { |
|
522 |
case IS_METHOD: |
|
523 |
{ |
|
524 |
CallInfo result; |
|
525 |
{ |
|
526 |
EXCEPTION_MARK; |
|
527 |
if ((flags & JVM_ACC_STATIC) != 0) { |
|
528 |
LinkResolver::resolve_static_call(result, |
|
529 |
defc, name, type, KlassHandle(), false, false, THREAD); |
|
530 |
} else if (defc->is_interface()) { |
|
531 |
LinkResolver::resolve_interface_call(result, Handle(), defc, |
|
532 |
defc, name, type, KlassHandle(), false, false, THREAD); |
|
533 |
} else { |
|
534 |
LinkResolver::resolve_virtual_call(result, Handle(), defc, |
|
535 |
defc, name, type, KlassHandle(), false, false, THREAD); |
|
536 |
} |
|
537 |
if (HAS_PENDING_EXCEPTION) { |
|
538 |
CLEAR_PENDING_EXCEPTION; |
|
5421
e294db54fc0d
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diff
changeset
|
539 |
break; // go to second chance |
2534 | 540 |
} |
541 |
} |
|
542 |
methodHandle m = result.resolved_method(); |
|
543 |
oop vmtarget = NULL; |
|
544 |
int vmindex = methodOopDesc::nonvirtual_vtable_index; |
|
545 |
if (defc->is_interface()) { |
|
546 |
vmindex = klassItable::compute_itable_index(m()); |
|
547 |
assert(vmindex >= 0, ""); |
|
548 |
} else if (result.has_vtable_index()) { |
|
549 |
vmindex = result.vtable_index(); |
|
550 |
assert(vmindex >= 0, ""); |
|
551 |
} |
|
552 |
assert(vmindex != VM_INDEX_UNINITIALIZED, ""); |
|
553 |
if (vmindex < 0) { |
|
554 |
assert(result.is_statically_bound(), ""); |
|
555 |
vmtarget = m(); |
|
556 |
} else { |
|
557 |
vmtarget = result.resolved_klass()->as_klassOop(); |
|
558 |
} |
|
559 |
int mods = (m->access_flags().as_short() & JVM_RECOGNIZED_METHOD_MODIFIERS); |
|
8676
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diff
changeset
|
560 |
java_lang_invoke_MemberName::set_vmtarget(mname(), vmtarget); |
9098d4e927e1
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parents:
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diff
changeset
|
561 |
java_lang_invoke_MemberName::set_vmindex(mname(), vmindex); |
9098d4e927e1
7012648: move JSR 292 to package java.lang.invoke and adjust names
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parents:
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diff
changeset
|
562 |
java_lang_invoke_MemberName::set_modifiers(mname(), mods); |
2534 | 563 |
DEBUG_ONLY(int junk; klassOop junk2); |
564 |
assert(decode_MemberName(mname(), junk2, junk) == result.resolved_method()(), |
|
565 |
"properly stored for later decoding"); |
|
566 |
return; |
|
567 |
} |
|
568 |
case IS_CONSTRUCTOR: |
|
569 |
{ |
|
570 |
CallInfo result; |
|
571 |
{ |
|
572 |
EXCEPTION_MARK; |
|
8076
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7887
diff
changeset
|
573 |
if (name == vmSymbols::object_initializer_name()) { |
2534 | 574 |
LinkResolver::resolve_special_call(result, |
575 |
defc, name, type, KlassHandle(), false, THREAD); |
|
576 |
} else { |
|
577 |
break; // will throw after end of switch |
|
578 |
} |
|
579 |
if (HAS_PENDING_EXCEPTION) { |
|
580 |
CLEAR_PENDING_EXCEPTION; |
|
581 |
return; |
|
582 |
} |
|
583 |
} |
|
584 |
assert(result.is_statically_bound(), ""); |
|
585 |
methodHandle m = result.resolved_method(); |
|
586 |
oop vmtarget = m(); |
|
587 |
int vmindex = methodOopDesc::nonvirtual_vtable_index; |
|
588 |
int mods = (m->access_flags().as_short() & JVM_RECOGNIZED_METHOD_MODIFIERS); |
|
8676
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7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8675
diff
changeset
|
589 |
java_lang_invoke_MemberName::set_vmtarget(mname(), vmtarget); |
9098d4e927e1
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8675
diff
changeset
|
590 |
java_lang_invoke_MemberName::set_vmindex(mname(), vmindex); |
9098d4e927e1
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8675
diff
changeset
|
591 |
java_lang_invoke_MemberName::set_modifiers(mname(), mods); |
2534 | 592 |
DEBUG_ONLY(int junk; klassOop junk2); |
593 |
assert(decode_MemberName(mname(), junk2, junk) == result.resolved_method()(), |
|
594 |
"properly stored for later decoding"); |
|
595 |
return; |
|
596 |
} |
|
597 |
case IS_FIELD: |
|
598 |
{ |
|
599 |
// This is taken from LinkResolver::resolve_field, sans access checks. |
|
600 |
fieldDescriptor fd; // find_field initializes fd if found |
|
8076
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6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
7887
diff
changeset
|
601 |
KlassHandle sel_klass(THREAD, instanceKlass::cast(defc())->find_field(name, type, &fd)); |
2534 | 602 |
// check if field exists; i.e., if a klass containing the field def has been selected |
603 |
if (sel_klass.is_null()) return; |
|
604 |
oop vmtarget = sel_klass->as_klassOop(); |
|
605 |
int vmindex = fd.offset(); |
|
606 |
int mods = (fd.access_flags().as_short() & JVM_RECOGNIZED_FIELD_MODIFIERS); |
|
607 |
if (vmindex == VM_INDEX_UNINITIALIZED) break; // should not happen |
|
8676
9098d4e927e1
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8675
diff
changeset
|
608 |
java_lang_invoke_MemberName::set_vmtarget(mname(), vmtarget); |
9098d4e927e1
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8675
diff
changeset
|
609 |
java_lang_invoke_MemberName::set_vmindex(mname(), vmindex); |
9098d4e927e1
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8675
diff
changeset
|
610 |
java_lang_invoke_MemberName::set_modifiers(mname(), mods); |
2534 | 611 |
return; |
612 |
} |
|
5421
e294db54fc0d
6939196: method handle signatures off the boot class path get linkage errors
jrose
parents:
5420
diff
changeset
|
613 |
default: |
e294db54fc0d
6939196: method handle signatures off the boot class path get linkage errors
jrose
parents:
5420
diff
changeset
|
614 |
THROW_MSG(vmSymbols::java_lang_InternalError(), "unrecognized MemberName format"); |
2534 | 615 |
} |
5421
e294db54fc0d
6939196: method handle signatures off the boot class path get linkage errors
jrose
parents:
5420
diff
changeset
|
616 |
|
e294db54fc0d
6939196: method handle signatures off the boot class path get linkage errors
jrose
parents:
5420
diff
changeset
|
617 |
// Second chance. |
e294db54fc0d
6939196: method handle signatures off the boot class path get linkage errors
jrose
parents:
5420
diff
changeset
|
618 |
if (polymorphic_method_type.not_null()) { |
e294db54fc0d
6939196: method handle signatures off the boot class path get linkage errors
jrose
parents:
5420
diff
changeset
|
619 |
// Look on a non-null class loader. |
e294db54fc0d
6939196: method handle signatures off the boot class path get linkage errors
jrose
parents:
5420
diff
changeset
|
620 |
Handle cur_class_loader; |
8676
9098d4e927e1
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8675
diff
changeset
|
621 |
const int nptypes = java_lang_invoke_MethodType::ptype_count(polymorphic_method_type()); |
5421
e294db54fc0d
6939196: method handle signatures off the boot class path get linkage errors
jrose
parents:
5420
diff
changeset
|
622 |
for (int i = 0; i <= nptypes; i++) { |
e294db54fc0d
6939196: method handle signatures off the boot class path get linkage errors
jrose
parents:
5420
diff
changeset
|
623 |
oop type_mirror; |
8676
9098d4e927e1
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8675
diff
changeset
|
624 |
if (i < nptypes) type_mirror = java_lang_invoke_MethodType::ptype(polymorphic_method_type(), i); |
9098d4e927e1
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8675
diff
changeset
|
625 |
else type_mirror = java_lang_invoke_MethodType::rtype(polymorphic_method_type()); |
5421
e294db54fc0d
6939196: method handle signatures off the boot class path get linkage errors
jrose
parents:
5420
diff
changeset
|
626 |
klassOop example_type = java_lang_Class::as_klassOop(type_mirror); |
e294db54fc0d
6939196: method handle signatures off the boot class path get linkage errors
jrose
parents:
5420
diff
changeset
|
627 |
if (example_type == NULL) continue; |
e294db54fc0d
6939196: method handle signatures off the boot class path get linkage errors
jrose
parents:
5420
diff
changeset
|
628 |
oop class_loader = Klass::cast(example_type)->class_loader(); |
e294db54fc0d
6939196: method handle signatures off the boot class path get linkage errors
jrose
parents:
5420
diff
changeset
|
629 |
if (class_loader == NULL || class_loader == cur_class_loader()) continue; |
e294db54fc0d
6939196: method handle signatures off the boot class path get linkage errors
jrose
parents:
5420
diff
changeset
|
630 |
cur_class_loader = Handle(THREAD, class_loader); |
e294db54fc0d
6939196: method handle signatures off the boot class path get linkage errors
jrose
parents:
5420
diff
changeset
|
631 |
methodOop m = SystemDictionary::find_method_handle_invoke(name, |
e294db54fc0d
6939196: method handle signatures off the boot class path get linkage errors
jrose
parents:
5420
diff
changeset
|
632 |
type, |
e294db54fc0d
6939196: method handle signatures off the boot class path get linkage errors
jrose
parents:
5420
diff
changeset
|
633 |
KlassHandle(THREAD, example_type), |
e294db54fc0d
6939196: method handle signatures off the boot class path get linkage errors
jrose
parents:
5420
diff
changeset
|
634 |
THREAD); |
e294db54fc0d
6939196: method handle signatures off the boot class path get linkage errors
jrose
parents:
5420
diff
changeset
|
635 |
if (HAS_PENDING_EXCEPTION) { |
e294db54fc0d
6939196: method handle signatures off the boot class path get linkage errors
jrose
parents:
5420
diff
changeset
|
636 |
CLEAR_PENDING_EXCEPTION; |
e294db54fc0d
6939196: method handle signatures off the boot class path get linkage errors
jrose
parents:
5420
diff
changeset
|
637 |
m = NULL; |
e294db54fc0d
6939196: method handle signatures off the boot class path get linkage errors
jrose
parents:
5420
diff
changeset
|
638 |
// try again with a different class loader... |
e294db54fc0d
6939196: method handle signatures off the boot class path get linkage errors
jrose
parents:
5420
diff
changeset
|
639 |
} |
e294db54fc0d
6939196: method handle signatures off the boot class path get linkage errors
jrose
parents:
5420
diff
changeset
|
640 |
if (m != NULL) { |
e294db54fc0d
6939196: method handle signatures off the boot class path get linkage errors
jrose
parents:
5420
diff
changeset
|
641 |
int mods = (m->access_flags().as_short() & JVM_RECOGNIZED_METHOD_MODIFIERS); |
8676
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7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8675
diff
changeset
|
642 |
java_lang_invoke_MemberName::set_vmtarget(mname(), m); |
9098d4e927e1
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8675
diff
changeset
|
643 |
java_lang_invoke_MemberName::set_vmindex(mname(), m->vtable_index()); |
9098d4e927e1
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8675
diff
changeset
|
644 |
java_lang_invoke_MemberName::set_modifiers(mname(), mods); |
5421
e294db54fc0d
6939196: method handle signatures off the boot class path get linkage errors
jrose
parents:
5420
diff
changeset
|
645 |
return; |
e294db54fc0d
6939196: method handle signatures off the boot class path get linkage errors
jrose
parents:
5420
diff
changeset
|
646 |
} |
e294db54fc0d
6939196: method handle signatures off the boot class path get linkage errors
jrose
parents:
5420
diff
changeset
|
647 |
} |
e294db54fc0d
6939196: method handle signatures off the boot class path get linkage errors
jrose
parents:
5420
diff
changeset
|
648 |
} |
2534 | 649 |
} |
650 |
||
651 |
// Conversely, a member name which is only initialized from JVM internals |
|
652 |
// may have null defc, name, and type fields. |
|
653 |
// Resolving it plants a vmtarget/vmindex in it, |
|
654 |
// which refers directly to JVM internals. |
|
655 |
void MethodHandles::expand_MemberName(Handle mname, int suppress, TRAPS) { |
|
8676
9098d4e927e1
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8675
diff
changeset
|
656 |
assert(java_lang_invoke_MemberName::is_instance(mname()), ""); |
9098d4e927e1
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8675
diff
changeset
|
657 |
oop vmtarget = java_lang_invoke_MemberName::vmtarget(mname()); |
9098d4e927e1
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8675
diff
changeset
|
658 |
int vmindex = java_lang_invoke_MemberName::vmindex(mname()); |
2534 | 659 |
if (vmtarget == NULL || vmindex == VM_INDEX_UNINITIALIZED) { |
660 |
THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "nothing to expand"); |
|
661 |
} |
|
662 |
||
8676
9098d4e927e1
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8675
diff
changeset
|
663 |
bool have_defc = (java_lang_invoke_MemberName::clazz(mname()) != NULL); |
9098d4e927e1
7012648: move JSR 292 to package java.lang.invoke and adjust names
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parents:
8675
diff
changeset
|
664 |
bool have_name = (java_lang_invoke_MemberName::name(mname()) != NULL); |
9098d4e927e1
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8675
diff
changeset
|
665 |
bool have_type = (java_lang_invoke_MemberName::type(mname()) != NULL); |
9098d4e927e1
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8675
diff
changeset
|
666 |
int flags = java_lang_invoke_MemberName::flags(mname()); |
2534 | 667 |
|
668 |
if (suppress != 0) { |
|
669 |
if (suppress & _suppress_defc) have_defc = true; |
|
670 |
if (suppress & _suppress_name) have_name = true; |
|
671 |
if (suppress & _suppress_type) have_type = true; |
|
672 |
} |
|
673 |
||
674 |
if (have_defc && have_name && have_type) return; // nothing needed |
|
675 |
||
676 |
switch (flags & ALL_KINDS) { |
|
677 |
case IS_METHOD: |
|
678 |
case IS_CONSTRUCTOR: |
|
679 |
{ |
|
680 |
klassOop receiver_limit = NULL; |
|
681 |
int decode_flags = 0; |
|
682 |
methodHandle m(THREAD, decode_vmtarget(vmtarget, vmindex, NULL, |
|
683 |
receiver_limit, decode_flags)); |
|
684 |
if (m.is_null()) break; |
|
685 |
if (!have_defc) { |
|
686 |
klassOop defc = m->method_holder(); |
|
687 |
if (receiver_limit != NULL && receiver_limit != defc |
|
688 |
&& Klass::cast(receiver_limit)->is_subtype_of(defc)) |
|
689 |
defc = receiver_limit; |
|
8676
9098d4e927e1
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8675
diff
changeset
|
690 |
java_lang_invoke_MemberName::set_clazz(mname(), Klass::cast(defc)->java_mirror()); |
2534 | 691 |
} |
692 |
if (!have_name) { |
|
693 |
//not java_lang_String::create_from_symbol; let's intern member names |
|
694 |
Handle name = StringTable::intern(m->name(), CHECK); |
|
8676
9098d4e927e1
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8675
diff
changeset
|
695 |
java_lang_invoke_MemberName::set_name(mname(), name()); |
2534 | 696 |
} |
697 |
if (!have_type) { |
|
698 |
Handle type = java_lang_String::create_from_symbol(m->signature(), CHECK); |
|
8676
9098d4e927e1
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8675
diff
changeset
|
699 |
java_lang_invoke_MemberName::set_type(mname(), type()); |
2534 | 700 |
} |
701 |
return; |
|
702 |
} |
|
703 |
case IS_FIELD: |
|
704 |
{ |
|
705 |
// This is taken from LinkResolver::resolve_field, sans access checks. |
|
706 |
if (!vmtarget->is_klass()) break; |
|
707 |
if (!Klass::cast((klassOop) vmtarget)->oop_is_instance()) break; |
|
708 |
instanceKlassHandle defc(THREAD, (klassOop) vmtarget); |
|
709 |
bool is_static = ((flags & JVM_ACC_STATIC) != 0); |
|
710 |
fieldDescriptor fd; // find_field initializes fd if found |
|
711 |
if (!defc->find_field_from_offset(vmindex, is_static, &fd)) |
|
712 |
break; // cannot expand |
|
713 |
if (!have_defc) { |
|
8676
9098d4e927e1
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8675
diff
changeset
|
714 |
java_lang_invoke_MemberName::set_clazz(mname(), defc->java_mirror()); |
2534 | 715 |
} |
716 |
if (!have_name) { |
|
717 |
//not java_lang_String::create_from_symbol; let's intern member names |
|
718 |
Handle name = StringTable::intern(fd.name(), CHECK); |
|
8676
9098d4e927e1
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8675
diff
changeset
|
719 |
java_lang_invoke_MemberName::set_name(mname(), name()); |
2534 | 720 |
} |
721 |
if (!have_type) { |
|
722 |
Handle type = java_lang_String::create_from_symbol(fd.signature(), CHECK); |
|
8676
9098d4e927e1
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8675
diff
changeset
|
723 |
java_lang_invoke_MemberName::set_type(mname(), type()); |
2534 | 724 |
} |
725 |
return; |
|
726 |
} |
|
727 |
} |
|
728 |
THROW_MSG(vmSymbols::java_lang_InternalError(), "unrecognized MemberName format"); |
|
729 |
} |
|
730 |
||
731 |
int MethodHandles::find_MemberNames(klassOop k, |
|
8076
96d498ec7ae1
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
7887
diff
changeset
|
732 |
Symbol* name, Symbol* sig, |
2534 | 733 |
int mflags, klassOop caller, |
734 |
int skip, objArrayOop results) { |
|
735 |
DEBUG_ONLY(No_Safepoint_Verifier nsv); |
|
736 |
// this code contains no safepoints! |
|
737 |
||
738 |
// %%% take caller into account! |
|
739 |
||
740 |
if (k == NULL || !Klass::cast(k)->oop_is_instance()) return -1; |
|
741 |
||
742 |
int rfill = 0, rlimit = results->length(), rskip = skip; |
|
743 |
// overflow measurement: |
|
744 |
int overflow = 0, overflow_limit = MAX2(1000, rlimit); |
|
745 |
||
746 |
int match_flags = mflags; |
|
747 |
bool search_superc = ((match_flags & SEARCH_SUPERCLASSES) != 0); |
|
748 |
bool search_intfc = ((match_flags & SEARCH_INTERFACES) != 0); |
|
749 |
bool local_only = !(search_superc | search_intfc); |
|
750 |
bool classes_only = false; |
|
751 |
||
752 |
if (name != NULL) { |
|
753 |
if (name->utf8_length() == 0) return 0; // a match is not possible |
|
754 |
} |
|
755 |
if (sig != NULL) { |
|
756 |
if (sig->utf8_length() == 0) return 0; // a match is not possible |
|
757 |
if (sig->byte_at(0) == '(') |
|
758 |
match_flags &= ~(IS_FIELD | IS_TYPE); |
|
759 |
else |
|
760 |
match_flags &= ~(IS_CONSTRUCTOR | IS_METHOD); |
|
761 |
} |
|
762 |
||
763 |
if ((match_flags & IS_TYPE) != 0) { |
|
764 |
// NYI, and Core Reflection works quite well for this query |
|
765 |
} |
|
766 |
||
767 |
if ((match_flags & IS_FIELD) != 0) { |
|
768 |
for (FieldStream st(k, local_only, !search_intfc); !st.eos(); st.next()) { |
|
769 |
if (name != NULL && st.name() != name) |
|
770 |
continue; |
|
771 |
if (sig != NULL && st.signature() != sig) |
|
772 |
continue; |
|
773 |
// passed the filters |
|
774 |
if (rskip > 0) { |
|
775 |
--rskip; |
|
776 |
} else if (rfill < rlimit) { |
|
777 |
oop result = results->obj_at(rfill++); |
|
8676
9098d4e927e1
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8675
diff
changeset
|
778 |
if (!java_lang_invoke_MemberName::is_instance(result)) |
2534 | 779 |
return -99; // caller bug! |
780 |
MethodHandles::init_MemberName(result, st.klass()->as_klassOop(), st.access_flags(), st.offset()); |
|
781 |
} else if (++overflow >= overflow_limit) { |
|
782 |
match_flags = 0; break; // got tired of looking at overflow |
|
783 |
} |
|
784 |
} |
|
785 |
} |
|
786 |
||
787 |
if ((match_flags & (IS_METHOD | IS_CONSTRUCTOR)) != 0) { |
|
788 |
// watch out for these guys: |
|
8076
96d498ec7ae1
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
7887
diff
changeset
|
789 |
Symbol* init_name = vmSymbols::object_initializer_name(); |
96d498ec7ae1
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
7887
diff
changeset
|
790 |
Symbol* clinit_name = vmSymbols::class_initializer_name(); |
2534 | 791 |
if (name == clinit_name) clinit_name = NULL; // hack for exposing <clinit> |
792 |
bool negate_name_test = false; |
|
793 |
// fix name so that it captures the intention of IS_CONSTRUCTOR |
|
794 |
if (!(match_flags & IS_METHOD)) { |
|
795 |
// constructors only |
|
796 |
if (name == NULL) { |
|
797 |
name = init_name; |
|
798 |
} else if (name != init_name) { |
|
799 |
return 0; // no constructors of this method name |
|
800 |
} |
|
801 |
} else if (!(match_flags & IS_CONSTRUCTOR)) { |
|
802 |
// methods only |
|
803 |
if (name == NULL) { |
|
804 |
name = init_name; |
|
805 |
negate_name_test = true; // if we see the name, we *omit* the entry |
|
806 |
} else if (name == init_name) { |
|
807 |
return 0; // no methods of this constructor name |
|
808 |
} |
|
809 |
} else { |
|
810 |
// caller will accept either sort; no need to adjust name |
|
811 |
} |
|
812 |
for (MethodStream st(k, local_only, !search_intfc); !st.eos(); st.next()) { |
|
813 |
methodOop m = st.method(); |
|
8076
96d498ec7ae1
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
7887
diff
changeset
|
814 |
Symbol* m_name = m->name(); |
2534 | 815 |
if (m_name == clinit_name) |
816 |
continue; |
|
817 |
if (name != NULL && ((m_name != name) ^ negate_name_test)) |
|
818 |
continue; |
|
819 |
if (sig != NULL && m->signature() != sig) |
|
820 |
continue; |
|
821 |
// passed the filters |
|
822 |
if (rskip > 0) { |
|
823 |
--rskip; |
|
824 |
} else if (rfill < rlimit) { |
|
825 |
oop result = results->obj_at(rfill++); |
|
8676
9098d4e927e1
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8675
diff
changeset
|
826 |
if (!java_lang_invoke_MemberName::is_instance(result)) |
2534 | 827 |
return -99; // caller bug! |
828 |
MethodHandles::init_MemberName(result, m, true); |
|
829 |
} else if (++overflow >= overflow_limit) { |
|
830 |
match_flags = 0; break; // got tired of looking at overflow |
|
831 |
} |
|
832 |
} |
|
833 |
} |
|
834 |
||
835 |
// return number of elements we at leasted wanted to initialize |
|
836 |
return rfill + overflow; |
|
837 |
} |
|
838 |
||
839 |
||
5420
586d3988e72b
6939134: JSR 292 adjustments to method handle invocation
jrose
parents:
5050
diff
changeset
|
840 |
// Decode this java.lang.Class object into an instanceKlass, if possible. |
586d3988e72b
6939134: JSR 292 adjustments to method handle invocation
jrose
parents:
5050
diff
changeset
|
841 |
// Throw IAE if not |
586d3988e72b
6939134: JSR 292 adjustments to method handle invocation
jrose
parents:
5050
diff
changeset
|
842 |
instanceKlassHandle MethodHandles::resolve_instance_klass(oop java_mirror_oop, TRAPS) { |
586d3988e72b
6939134: JSR 292 adjustments to method handle invocation
jrose
parents:
5050
diff
changeset
|
843 |
instanceKlassHandle empty; |
586d3988e72b
6939134: JSR 292 adjustments to method handle invocation
jrose
parents:
5050
diff
changeset
|
844 |
klassOop caller = NULL; |
586d3988e72b
6939134: JSR 292 adjustments to method handle invocation
jrose
parents:
5050
diff
changeset
|
845 |
if (java_lang_Class::is_instance(java_mirror_oop)) { |
586d3988e72b
6939134: JSR 292 adjustments to method handle invocation
jrose
parents:
5050
diff
changeset
|
846 |
caller = java_lang_Class::as_klassOop(java_mirror_oop); |
586d3988e72b
6939134: JSR 292 adjustments to method handle invocation
jrose
parents:
5050
diff
changeset
|
847 |
} |
586d3988e72b
6939134: JSR 292 adjustments to method handle invocation
jrose
parents:
5050
diff
changeset
|
848 |
if (caller == NULL || !Klass::cast(caller)->oop_is_instance()) { |
586d3988e72b
6939134: JSR 292 adjustments to method handle invocation
jrose
parents:
5050
diff
changeset
|
849 |
THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), "not a class", empty); |
586d3988e72b
6939134: JSR 292 adjustments to method handle invocation
jrose
parents:
5050
diff
changeset
|
850 |
} |
586d3988e72b
6939134: JSR 292 adjustments to method handle invocation
jrose
parents:
5050
diff
changeset
|
851 |
return instanceKlassHandle(THREAD, caller); |
586d3988e72b
6939134: JSR 292 adjustments to method handle invocation
jrose
parents:
5050
diff
changeset
|
852 |
} |
586d3988e72b
6939134: JSR 292 adjustments to method handle invocation
jrose
parents:
5050
diff
changeset
|
853 |
|
2534 | 854 |
|
855 |
||
856 |
// Decode the vmtarget field of a method handle. |
|
857 |
// Sanitize out methodOops, klassOops, and any other non-Java data. |
|
858 |
// This is for debugging and reflection. |
|
859 |
oop MethodHandles::encode_target(Handle mh, int format, TRAPS) { |
|
8676
9098d4e927e1
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8675
diff
changeset
|
860 |
assert(java_lang_invoke_MethodHandle::is_instance(mh()), "must be a MH"); |
2534 | 861 |
if (format == ETF_HANDLE_OR_METHOD_NAME) { |
8676
9098d4e927e1
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8675
diff
changeset
|
862 |
oop target = java_lang_invoke_MethodHandle::vmtarget(mh()); |
2534 | 863 |
if (target == NULL) { |
864 |
return NULL; // unformed MH |
|
865 |
} |
|
866 |
klassOop tklass = target->klass(); |
|
4571 | 867 |
if (Klass::cast(tklass)->is_subclass_of(SystemDictionary::Object_klass())) { |
2534 | 868 |
return target; // target is another MH (or something else?) |
869 |
} |
|
870 |
} |
|
871 |
if (format == ETF_DIRECT_HANDLE) { |
|
872 |
oop target = mh(); |
|
873 |
for (;;) { |
|
874 |
if (target->klass() == SystemDictionary::DirectMethodHandle_klass()) { |
|
875 |
return target; |
|
876 |
} |
|
8676
9098d4e927e1
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8675
diff
changeset
|
877 |
if (!java_lang_invoke_MethodHandle::is_instance(target)){ |
2534 | 878 |
return NULL; // unformed MH |
879 |
} |
|
8676
9098d4e927e1
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8675
diff
changeset
|
880 |
target = java_lang_invoke_MethodHandle::vmtarget(target); |
2534 | 881 |
} |
882 |
} |
|
883 |
// cases of metadata in MH.vmtarget: |
|
884 |
// - AMH can have methodOop for static invoke with bound receiver |
|
885 |
// - DMH can have methodOop for static invoke (on variable receiver) |
|
886 |
// - DMH can have klassOop for dispatched (non-static) invoke |
|
887 |
klassOop receiver_limit = NULL; |
|
888 |
int decode_flags = 0; |
|
889 |
methodOop m = decode_MethodHandle(mh(), receiver_limit, decode_flags); |
|
890 |
if (m == NULL) return NULL; |
|
891 |
switch (format) { |
|
892 |
case ETF_REFLECT_METHOD: |
|
893 |
// same as jni_ToReflectedMethod: |
|
894 |
if (m->is_initializer()) { |
|
895 |
return Reflection::new_constructor(m, THREAD); |
|
896 |
} else { |
|
897 |
return Reflection::new_method(m, UseNewReflection, false, THREAD); |
|
898 |
} |
|
899 |
||
900 |
case ETF_HANDLE_OR_METHOD_NAME: // method, not handle |
|
901 |
case ETF_METHOD_NAME: |
|
902 |
{ |
|
903 |
if (SystemDictionary::MemberName_klass() == NULL) break; |
|
904 |
instanceKlassHandle mname_klass(THREAD, SystemDictionary::MemberName_klass()); |
|
905 |
mname_klass->initialize(CHECK_NULL); |
|
906 |
Handle mname = mname_klass->allocate_instance_handle(CHECK_NULL); |
|
8676
9098d4e927e1
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8675
diff
changeset
|
907 |
java_lang_invoke_MemberName::set_vmindex(mname(), VM_INDEX_UNINITIALIZED); |
2534 | 908 |
bool do_dispatch = ((decode_flags & MethodHandles::_dmf_does_dispatch) != 0); |
909 |
init_MemberName(mname(), m, do_dispatch); |
|
910 |
expand_MemberName(mname, 0, CHECK_NULL); |
|
911 |
return mname(); |
|
912 |
} |
|
913 |
} |
|
914 |
||
915 |
// Unknown format code. |
|
916 |
char msg[50]; |
|
917 |
jio_snprintf(msg, sizeof(msg), "unknown getTarget format=%d", format); |
|
918 |
THROW_MSG_NULL(vmSymbols::java_lang_IllegalArgumentException(), msg); |
|
919 |
} |
|
920 |
||
4094
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
921 |
static const char* always_null_names[] = { |
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
922 |
"java/lang/Void", |
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
923 |
"java/lang/Null", |
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
924 |
//"java/lang/Nothing", |
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
925 |
"sun/dyn/empty/Empty", |
8676
9098d4e927e1
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8675
diff
changeset
|
926 |
"sun/invoke/empty/Empty", |
4094
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
927 |
NULL |
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
928 |
}; |
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
929 |
|
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
930 |
static bool is_always_null_type(klassOop klass) { |
9134
189a8c094016
6987991: JSR 292 phpreboot test/testtracefun2.phpr segfaults
jrose
parents:
9116
diff
changeset
|
931 |
if (klass == NULL) return false; // safety |
4094
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
932 |
if (!Klass::cast(klass)->oop_is_instance()) return false; |
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
933 |
instanceKlass* ik = instanceKlass::cast(klass); |
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
934 |
// Must be on the boot class path: |
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
935 |
if (ik->class_loader() != NULL) return false; |
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
936 |
// Check the name. |
8076
96d498ec7ae1
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
7887
diff
changeset
|
937 |
Symbol* name = ik->name(); |
4094
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
938 |
for (int i = 0; ; i++) { |
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
939 |
const char* test_name = always_null_names[i]; |
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
940 |
if (test_name == NULL) break; |
4567
7fc02fbe5c7a
6893268: additional dynamic language related optimizations in C2
twisti
parents:
4429
diff
changeset
|
941 |
if (name->equals(test_name)) |
4094
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
942 |
return true; |
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
943 |
} |
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
944 |
return false; |
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
945 |
} |
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
946 |
|
2534 | 947 |
bool MethodHandles::class_cast_needed(klassOop src, klassOop dst) { |
9134
189a8c094016
6987991: JSR 292 phpreboot test/testtracefun2.phpr segfaults
jrose
parents:
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diff
changeset
|
948 |
if (dst == NULL) return true; |
189a8c094016
6987991: JSR 292 phpreboot test/testtracefun2.phpr segfaults
jrose
parents:
9116
diff
changeset
|
949 |
if (src == NULL) return (dst != SystemDictionary::Object_klass()); |
4571 | 950 |
if (src == dst || dst == SystemDictionary::Object_klass()) |
2534 | 951 |
return false; // quickest checks |
952 |
Klass* srck = Klass::cast(src); |
|
953 |
Klass* dstk = Klass::cast(dst); |
|
954 |
if (dstk->is_interface()) { |
|
955 |
// interface receivers can safely be viewed as untyped, |
|
956 |
// because interface calls always include a dynamic check |
|
4571 | 957 |
//dstk = Klass::cast(SystemDictionary::Object_klass()); |
2534 | 958 |
return false; |
959 |
} |
|
960 |
if (srck->is_interface()) { |
|
961 |
// interface arguments must be viewed as untyped |
|
4571 | 962 |
//srck = Klass::cast(SystemDictionary::Object_klass()); |
2534 | 963 |
return true; |
964 |
} |
|
4094
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
965 |
if (is_always_null_type(src)) { |
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
966 |
// some source types are known to be never instantiated; |
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
967 |
// they represent references which are always null |
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
968 |
// such null references never fail to convert safely |
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
969 |
return false; |
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
970 |
} |
2534 | 971 |
return !srck->is_subclass_of(dstk->as_klassOop()); |
972 |
} |
|
973 |
||
974 |
static oop object_java_mirror() { |
|
4571 | 975 |
return Klass::cast(SystemDictionary::Object_klass())->java_mirror(); |
2534 | 976 |
} |
977 |
||
978 |
bool MethodHandles::same_basic_type_for_arguments(BasicType src, |
|
979 |
BasicType dst, |
|
4094
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
980 |
bool raw, |
2534 | 981 |
bool for_return) { |
4094
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
982 |
if (for_return) { |
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
983 |
// return values can always be forgotten: |
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
984 |
if (dst == T_VOID) return true; |
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
985 |
if (src == T_VOID) return raw && (dst == T_INT); |
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
986 |
// We allow caller to receive a garbage int, which is harmless. |
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
987 |
// This trick is pulled by trusted code (see VerifyType.canPassRaw). |
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
988 |
} |
2534 | 989 |
assert(src != T_VOID && dst != T_VOID, "should not be here"); |
990 |
if (src == dst) return true; |
|
991 |
if (type2size[src] != type2size[dst]) return false; |
|
7113
f05a0ba2802f
6981777: implement JSR 292 EG adjustments from summer 2010
jrose
parents:
6775
diff
changeset
|
992 |
if (src == T_OBJECT || dst == T_OBJECT) return false; |
f05a0ba2802f
6981777: implement JSR 292 EG adjustments from summer 2010
jrose
parents:
6775
diff
changeset
|
993 |
if (raw) return true; // bitwise reinterpretation; caller guarantees safety |
2534 | 994 |
// allow reinterpretation casts for integral widening |
995 |
if (is_subword_type(src)) { // subwords can fit in int or other subwords |
|
996 |
if (dst == T_INT) // any subword fits in an int |
|
997 |
return true; |
|
998 |
if (src == T_BOOLEAN) // boolean fits in any subword |
|
999 |
return is_subword_type(dst); |
|
1000 |
if (src == T_BYTE && dst == T_SHORT) |
|
1001 |
return true; // remaining case: byte fits in short |
|
1002 |
} |
|
1003 |
// allow float/fixed reinterpretation casts |
|
1004 |
if (src == T_FLOAT) return dst == T_INT; |
|
1005 |
if (src == T_INT) return dst == T_FLOAT; |
|
1006 |
if (src == T_DOUBLE) return dst == T_LONG; |
|
1007 |
if (src == T_LONG) return dst == T_DOUBLE; |
|
1008 |
return false; |
|
1009 |
} |
|
1010 |
||
1011 |
const char* MethodHandles::check_method_receiver(methodOop m, |
|
1012 |
klassOop passed_recv_type) { |
|
1013 |
assert(!m->is_static(), "caller resp."); |
|
1014 |
if (passed_recv_type == NULL) |
|
1015 |
return "receiver type is primitive"; |
|
1016 |
if (class_cast_needed(passed_recv_type, m->method_holder())) { |
|
1017 |
Klass* formal = Klass::cast(m->method_holder()); |
|
1018 |
return SharedRuntime::generate_class_cast_message("receiver type", |
|
1019 |
formal->external_name()); |
|
1020 |
} |
|
1021 |
return NULL; // checks passed |
|
1022 |
} |
|
1023 |
||
1024 |
// Verify that m's signature can be called type-safely by a method handle |
|
1025 |
// of the given method type 'mtype'. |
|
1026 |
// It takes a TRAPS argument because it must perform symbol lookups. |
|
1027 |
void MethodHandles::verify_method_signature(methodHandle m, |
|
1028 |
Handle mtype, |
|
1029 |
int first_ptype_pos, |
|
1030 |
KlassHandle insert_ptype, |
|
1031 |
TRAPS) { |
|
9134
189a8c094016
6987991: JSR 292 phpreboot test/testtracefun2.phpr segfaults
jrose
parents:
9116
diff
changeset
|
1032 |
Handle mhi_type; |
189a8c094016
6987991: JSR 292 phpreboot test/testtracefun2.phpr segfaults
jrose
parents:
9116
diff
changeset
|
1033 |
if (m->is_method_handle_invoke()) { |
189a8c094016
6987991: JSR 292 phpreboot test/testtracefun2.phpr segfaults
jrose
parents:
9116
diff
changeset
|
1034 |
// use this more exact typing instead of the symbolic signature: |
189a8c094016
6987991: JSR 292 phpreboot test/testtracefun2.phpr segfaults
jrose
parents:
9116
diff
changeset
|
1035 |
mhi_type = Handle(THREAD, m->method_handle_type()); |
189a8c094016
6987991: JSR 292 phpreboot test/testtracefun2.phpr segfaults
jrose
parents:
9116
diff
changeset
|
1036 |
} |
8676
9098d4e927e1
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8675
diff
changeset
|
1037 |
objArrayHandle ptypes(THREAD, java_lang_invoke_MethodType::ptypes(mtype())); |
2534 | 1038 |
int pnum = first_ptype_pos; |
1039 |
int pmax = ptypes->length(); |
|
9134
189a8c094016
6987991: JSR 292 phpreboot test/testtracefun2.phpr segfaults
jrose
parents:
9116
diff
changeset
|
1040 |
int anum = 0; // method argument |
2534 | 1041 |
const char* err = NULL; |
8076
96d498ec7ae1
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
7887
diff
changeset
|
1042 |
ResourceMark rm(THREAD); |
2534 | 1043 |
for (SignatureStream ss(m->signature()); !ss.is_done(); ss.next()) { |
1044 |
oop ptype_oop = NULL; |
|
1045 |
if (ss.at_return_type()) { |
|
1046 |
if (pnum != pmax) |
|
1047 |
{ err = "too many arguments"; break; } |
|
8676
9098d4e927e1
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8675
diff
changeset
|
1048 |
ptype_oop = java_lang_invoke_MethodType::rtype(mtype()); |
2534 | 1049 |
} else { |
1050 |
if (pnum >= pmax) |
|
1051 |
{ err = "not enough arguments"; break; } |
|
1052 |
if (pnum >= 0) |
|
1053 |
ptype_oop = ptypes->obj_at(pnum); |
|
1054 |
else if (insert_ptype.is_null()) |
|
1055 |
ptype_oop = NULL; |
|
1056 |
else |
|
1057 |
ptype_oop = insert_ptype->java_mirror(); |
|
1058 |
pnum += 1; |
|
9134
189a8c094016
6987991: JSR 292 phpreboot test/testtracefun2.phpr segfaults
jrose
parents:
9116
diff
changeset
|
1059 |
anum += 1; |
2534 | 1060 |
} |
9134
189a8c094016
6987991: JSR 292 phpreboot test/testtracefun2.phpr segfaults
jrose
parents:
9116
diff
changeset
|
1061 |
KlassHandle pklass; |
189a8c094016
6987991: JSR 292 phpreboot test/testtracefun2.phpr segfaults
jrose
parents:
9116
diff
changeset
|
1062 |
BasicType ptype = T_OBJECT; |
189a8c094016
6987991: JSR 292 phpreboot test/testtracefun2.phpr segfaults
jrose
parents:
9116
diff
changeset
|
1063 |
bool have_ptype = false; |
189a8c094016
6987991: JSR 292 phpreboot test/testtracefun2.phpr segfaults
jrose
parents:
9116
diff
changeset
|
1064 |
// missing ptype_oop does not match any non-reference; use Object to report the error |
189a8c094016
6987991: JSR 292 phpreboot test/testtracefun2.phpr segfaults
jrose
parents:
9116
diff
changeset
|
1065 |
pklass = SystemDictionaryHandles::Object_klass(); |
189a8c094016
6987991: JSR 292 phpreboot test/testtracefun2.phpr segfaults
jrose
parents:
9116
diff
changeset
|
1066 |
if (ptype_oop != NULL) { |
189a8c094016
6987991: JSR 292 phpreboot test/testtracefun2.phpr segfaults
jrose
parents:
9116
diff
changeset
|
1067 |
have_ptype = true; |
189a8c094016
6987991: JSR 292 phpreboot test/testtracefun2.phpr segfaults
jrose
parents:
9116
diff
changeset
|
1068 |
klassOop pklass_oop = NULL; |
189a8c094016
6987991: JSR 292 phpreboot test/testtracefun2.phpr segfaults
jrose
parents:
9116
diff
changeset
|
1069 |
ptype = java_lang_Class::as_BasicType(ptype_oop, &pklass_oop); |
189a8c094016
6987991: JSR 292 phpreboot test/testtracefun2.phpr segfaults
jrose
parents:
9116
diff
changeset
|
1070 |
pklass = KlassHandle(THREAD, pklass_oop); |
189a8c094016
6987991: JSR 292 phpreboot test/testtracefun2.phpr segfaults
jrose
parents:
9116
diff
changeset
|
1071 |
} |
189a8c094016
6987991: JSR 292 phpreboot test/testtracefun2.phpr segfaults
jrose
parents:
9116
diff
changeset
|
1072 |
ptype_oop = NULL; //done with this |
189a8c094016
6987991: JSR 292 phpreboot test/testtracefun2.phpr segfaults
jrose
parents:
9116
diff
changeset
|
1073 |
KlassHandle aklass; |
189a8c094016
6987991: JSR 292 phpreboot test/testtracefun2.phpr segfaults
jrose
parents:
9116
diff
changeset
|
1074 |
BasicType atype = ss.type(); |
189a8c094016
6987991: JSR 292 phpreboot test/testtracefun2.phpr segfaults
jrose
parents:
9116
diff
changeset
|
1075 |
if (atype == T_ARRAY) atype = T_OBJECT; // fold all refs to T_OBJECT |
189a8c094016
6987991: JSR 292 phpreboot test/testtracefun2.phpr segfaults
jrose
parents:
9116
diff
changeset
|
1076 |
if (atype == T_OBJECT) { |
189a8c094016
6987991: JSR 292 phpreboot test/testtracefun2.phpr segfaults
jrose
parents:
9116
diff
changeset
|
1077 |
if (!have_ptype) { |
2534 | 1078 |
// null matches any reference |
1079 |
continue; |
|
1080 |
} |
|
9134
189a8c094016
6987991: JSR 292 phpreboot test/testtracefun2.phpr segfaults
jrose
parents:
9116
diff
changeset
|
1081 |
if (mhi_type.is_null()) { |
189a8c094016
6987991: JSR 292 phpreboot test/testtracefun2.phpr segfaults
jrose
parents:
9116
diff
changeset
|
1082 |
// If we fail to resolve types at this point, we will usually throw an error. |
189a8c094016
6987991: JSR 292 phpreboot test/testtracefun2.phpr segfaults
jrose
parents:
9116
diff
changeset
|
1083 |
TempNewSymbol name = ss.as_symbol_or_null(); |
189a8c094016
6987991: JSR 292 phpreboot test/testtracefun2.phpr segfaults
jrose
parents:
9116
diff
changeset
|
1084 |
if (name != NULL) { |
189a8c094016
6987991: JSR 292 phpreboot test/testtracefun2.phpr segfaults
jrose
parents:
9116
diff
changeset
|
1085 |
instanceKlass* mk = instanceKlass::cast(m->method_holder()); |
189a8c094016
6987991: JSR 292 phpreboot test/testtracefun2.phpr segfaults
jrose
parents:
9116
diff
changeset
|
1086 |
Handle loader(THREAD, mk->class_loader()); |
189a8c094016
6987991: JSR 292 phpreboot test/testtracefun2.phpr segfaults
jrose
parents:
9116
diff
changeset
|
1087 |
Handle domain(THREAD, mk->protection_domain()); |
189a8c094016
6987991: JSR 292 phpreboot test/testtracefun2.phpr segfaults
jrose
parents:
9116
diff
changeset
|
1088 |
klassOop aklass_oop = SystemDictionary::resolve_or_null(name, loader, domain, CHECK); |
189a8c094016
6987991: JSR 292 phpreboot test/testtracefun2.phpr segfaults
jrose
parents:
9116
diff
changeset
|
1089 |
if (aklass_oop != NULL) |
189a8c094016
6987991: JSR 292 phpreboot test/testtracefun2.phpr segfaults
jrose
parents:
9116
diff
changeset
|
1090 |
aklass = KlassHandle(THREAD, aklass_oop); |
189a8c094016
6987991: JSR 292 phpreboot test/testtracefun2.phpr segfaults
jrose
parents:
9116
diff
changeset
|
1091 |
} |
189a8c094016
6987991: JSR 292 phpreboot test/testtracefun2.phpr segfaults
jrose
parents:
9116
diff
changeset
|
1092 |
} else { |
189a8c094016
6987991: JSR 292 phpreboot test/testtracefun2.phpr segfaults
jrose
parents:
9116
diff
changeset
|
1093 |
// for method handle invokers we don't look at the name in the signature |
189a8c094016
6987991: JSR 292 phpreboot test/testtracefun2.phpr segfaults
jrose
parents:
9116
diff
changeset
|
1094 |
oop atype_oop; |
189a8c094016
6987991: JSR 292 phpreboot test/testtracefun2.phpr segfaults
jrose
parents:
9116
diff
changeset
|
1095 |
if (ss.at_return_type()) |
189a8c094016
6987991: JSR 292 phpreboot test/testtracefun2.phpr segfaults
jrose
parents:
9116
diff
changeset
|
1096 |
atype_oop = java_lang_invoke_MethodType::rtype(mhi_type()); |
189a8c094016
6987991: JSR 292 phpreboot test/testtracefun2.phpr segfaults
jrose
parents:
9116
diff
changeset
|
1097 |
else |
189a8c094016
6987991: JSR 292 phpreboot test/testtracefun2.phpr segfaults
jrose
parents:
9116
diff
changeset
|
1098 |
atype_oop = java_lang_invoke_MethodType::ptype(mhi_type(), anum-1); |
189a8c094016
6987991: JSR 292 phpreboot test/testtracefun2.phpr segfaults
jrose
parents:
9116
diff
changeset
|
1099 |
klassOop aklass_oop = NULL; |
189a8c094016
6987991: JSR 292 phpreboot test/testtracefun2.phpr segfaults
jrose
parents:
9116
diff
changeset
|
1100 |
atype = java_lang_Class::as_BasicType(atype_oop, &aklass_oop); |
189a8c094016
6987991: JSR 292 phpreboot test/testtracefun2.phpr segfaults
jrose
parents:
9116
diff
changeset
|
1101 |
aklass = KlassHandle(THREAD, aklass_oop); |
5421
e294db54fc0d
6939196: method handle signatures off the boot class path get linkage errors
jrose
parents:
5420
diff
changeset
|
1102 |
} |
2534 | 1103 |
} |
1104 |
if (!ss.at_return_type()) { |
|
9134
189a8c094016
6987991: JSR 292 phpreboot test/testtracefun2.phpr segfaults
jrose
parents:
9116
diff
changeset
|
1105 |
err = check_argument_type_change(ptype, pklass(), atype, aklass(), anum); |
2534 | 1106 |
} else { |
9134
189a8c094016
6987991: JSR 292 phpreboot test/testtracefun2.phpr segfaults
jrose
parents:
9116
diff
changeset
|
1107 |
err = check_return_type_change(atype, aklass(), ptype, pklass()); // note reversal! |
2534 | 1108 |
} |
1109 |
if (err != NULL) break; |
|
1110 |
} |
|
1111 |
||
1112 |
if (err != NULL) { |
|
9134
189a8c094016
6987991: JSR 292 phpreboot test/testtracefun2.phpr segfaults
jrose
parents:
9116
diff
changeset
|
1113 |
#ifndef PRODUCT |
189a8c094016
6987991: JSR 292 phpreboot test/testtracefun2.phpr segfaults
jrose
parents:
9116
diff
changeset
|
1114 |
if (PrintMiscellaneous && (Verbose || WizardMode)) { |
189a8c094016
6987991: JSR 292 phpreboot test/testtracefun2.phpr segfaults
jrose
parents:
9116
diff
changeset
|
1115 |
tty->print("*** verify_method_signature failed: "); |
189a8c094016
6987991: JSR 292 phpreboot test/testtracefun2.phpr segfaults
jrose
parents:
9116
diff
changeset
|
1116 |
java_lang_invoke_MethodType::print_signature(mtype(), tty); |
189a8c094016
6987991: JSR 292 phpreboot test/testtracefun2.phpr segfaults
jrose
parents:
9116
diff
changeset
|
1117 |
tty->cr(); |
189a8c094016
6987991: JSR 292 phpreboot test/testtracefun2.phpr segfaults
jrose
parents:
9116
diff
changeset
|
1118 |
tty->print_cr(" first_ptype_pos = %d, insert_ptype = "UINTX_FORMAT, first_ptype_pos, insert_ptype()); |
189a8c094016
6987991: JSR 292 phpreboot test/testtracefun2.phpr segfaults
jrose
parents:
9116
diff
changeset
|
1119 |
tty->print(" Failing method: "); |
189a8c094016
6987991: JSR 292 phpreboot test/testtracefun2.phpr segfaults
jrose
parents:
9116
diff
changeset
|
1120 |
m->print(); |
189a8c094016
6987991: JSR 292 phpreboot test/testtracefun2.phpr segfaults
jrose
parents:
9116
diff
changeset
|
1121 |
} |
189a8c094016
6987991: JSR 292 phpreboot test/testtracefun2.phpr segfaults
jrose
parents:
9116
diff
changeset
|
1122 |
#endif //PRODUCT |
2534 | 1123 |
THROW_MSG(vmSymbols::java_lang_InternalError(), err); |
1124 |
} |
|
1125 |
} |
|
1126 |
||
1127 |
// Main routine for verifying the MethodHandle.type of a proposed |
|
1128 |
// direct or bound-direct method handle. |
|
1129 |
void MethodHandles::verify_method_type(methodHandle m, |
|
1130 |
Handle mtype, |
|
1131 |
bool has_bound_recv, |
|
1132 |
KlassHandle bound_recv_type, |
|
1133 |
TRAPS) { |
|
1134 |
bool m_needs_receiver = !m->is_static(); |
|
1135 |
||
1136 |
const char* err = NULL; |
|
1137 |
||
1138 |
int first_ptype_pos = m_needs_receiver ? 1 : 0; |
|
4094
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
1139 |
if (has_bound_recv) { |
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
1140 |
first_ptype_pos -= 1; // ptypes do not include the bound argument; start earlier in them |
2534 | 1141 |
if (m_needs_receiver && bound_recv_type.is_null()) |
1142 |
{ err = "bound receiver is not an object"; goto die; } |
|
1143 |
} |
|
1144 |
||
1145 |
if (m_needs_receiver && err == NULL) { |
|
8676
9098d4e927e1
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8675
diff
changeset
|
1146 |
objArrayOop ptypes = java_lang_invoke_MethodType::ptypes(mtype()); |
2534 | 1147 |
if (ptypes->length() < first_ptype_pos) |
1148 |
{ err = "receiver argument is missing"; goto die; } |
|
4094
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
1149 |
if (has_bound_recv) |
2534 | 1150 |
err = check_method_receiver(m(), bound_recv_type->as_klassOop()); |
1151 |
else |
|
4094
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
1152 |
err = check_method_receiver(m(), java_lang_Class::as_klassOop(ptypes->obj_at(first_ptype_pos-1))); |
2534 | 1153 |
if (err != NULL) goto die; |
1154 |
} |
|
1155 |
||
1156 |
// Check the other arguments for mistypes. |
|
1157 |
verify_method_signature(m, mtype, first_ptype_pos, bound_recv_type, CHECK); |
|
1158 |
return; |
|
1159 |
||
1160 |
die: |
|
1161 |
THROW_MSG(vmSymbols::java_lang_InternalError(), err); |
|
1162 |
} |
|
1163 |
||
1164 |
void MethodHandles::verify_vmslots(Handle mh, TRAPS) { |
|
1165 |
// Verify vmslots. |
|
8676
9098d4e927e1
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8675
diff
changeset
|
1166 |
int check_slots = argument_slot_count(java_lang_invoke_MethodHandle::type(mh())); |
9098d4e927e1
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8675
diff
changeset
|
1167 |
if (java_lang_invoke_MethodHandle::vmslots(mh()) != check_slots) { |
2534 | 1168 |
THROW_MSG(vmSymbols::java_lang_InternalError(), "bad vmslots in BMH"); |
1169 |
} |
|
1170 |
} |
|
1171 |
||
1172 |
void MethodHandles::verify_vmargslot(Handle mh, int argnum, int argslot, TRAPS) { |
|
1173 |
// Verify that argslot points at the given argnum. |
|
8676
9098d4e927e1
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8675
diff
changeset
|
1174 |
int check_slot = argument_slot(java_lang_invoke_MethodHandle::type(mh()), argnum); |
2534 | 1175 |
if (argslot != check_slot || argslot < 0) { |
1176 |
const char* fmt = "for argnum of %d, vmargslot is %d, should be %d"; |
|
1177 |
size_t msglen = strlen(fmt) + 3*11 + 1; |
|
1178 |
char* msg = NEW_RESOURCE_ARRAY(char, msglen); |
|
1179 |
jio_snprintf(msg, msglen, fmt, argnum, argslot, check_slot); |
|
1180 |
THROW_MSG(vmSymbols::java_lang_InternalError(), msg); |
|
1181 |
} |
|
1182 |
} |
|
1183 |
||
1184 |
// Verify the correspondence between two method types. |
|
1185 |
// Apart from the advertised changes, caller method type X must |
|
1186 |
// be able to invoke the callee method Y type with no violations |
|
1187 |
// of type integrity. |
|
1188 |
// Return NULL if all is well, else a short error message. |
|
1189 |
const char* MethodHandles::check_method_type_change(oop src_mtype, int src_beg, int src_end, |
|
1190 |
int insert_argnum, oop insert_type, |
|
1191 |
int change_argnum, oop change_type, |
|
1192 |
int delete_argnum, |
|
4094
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
1193 |
oop dst_mtype, int dst_beg, int dst_end, |
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
1194 |
bool raw) { |
8676
9098d4e927e1
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8675
diff
changeset
|
1195 |
objArrayOop src_ptypes = java_lang_invoke_MethodType::ptypes(src_mtype); |
9098d4e927e1
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8675
diff
changeset
|
1196 |
objArrayOop dst_ptypes = java_lang_invoke_MethodType::ptypes(dst_mtype); |
2534 | 1197 |
|
1198 |
int src_max = src_ptypes->length(); |
|
1199 |
int dst_max = dst_ptypes->length(); |
|
1200 |
||
1201 |
if (src_end == -1) src_end = src_max; |
|
1202 |
if (dst_end == -1) dst_end = dst_max; |
|
1203 |
||
1204 |
assert(0 <= src_beg && src_beg <= src_end && src_end <= src_max, "oob"); |
|
1205 |
assert(0 <= dst_beg && dst_beg <= dst_end && dst_end <= dst_max, "oob"); |
|
1206 |
||
1207 |
// pending actions; set to -1 when done: |
|
1208 |
int ins_idx = insert_argnum, chg_idx = change_argnum, del_idx = delete_argnum; |
|
1209 |
||
1210 |
const char* err = NULL; |
|
1211 |
||
1212 |
// Walk along each array of parameter types, including a virtual |
|
1213 |
// NULL end marker at the end of each. |
|
1214 |
for (int src_idx = src_beg, dst_idx = dst_beg; |
|
1215 |
(src_idx <= src_end && dst_idx <= dst_end); |
|
1216 |
src_idx++, dst_idx++) { |
|
1217 |
oop src_type = (src_idx == src_end) ? oop(NULL) : src_ptypes->obj_at(src_idx); |
|
1218 |
oop dst_type = (dst_idx == dst_end) ? oop(NULL) : dst_ptypes->obj_at(dst_idx); |
|
1219 |
bool fix_null_src_type = false; |
|
1220 |
||
1221 |
// Perform requested edits. |
|
1222 |
if (ins_idx == src_idx) { |
|
1223 |
// note that the inserted guy is never affected by a change or deletion |
|
1224 |
ins_idx = -1; |
|
1225 |
src_type = insert_type; |
|
1226 |
fix_null_src_type = true; |
|
1227 |
--src_idx; // back up to process src type on next loop |
|
1228 |
src_idx = src_end; |
|
1229 |
} else { |
|
1230 |
// note that the changed guy can be immediately deleted |
|
1231 |
if (chg_idx == src_idx) { |
|
1232 |
chg_idx = -1; |
|
1233 |
assert(src_idx < src_end, "oob"); |
|
1234 |
src_type = change_type; |
|
1235 |
fix_null_src_type = true; |
|
1236 |
} |
|
1237 |
if (del_idx == src_idx) { |
|
1238 |
del_idx = -1; |
|
1239 |
assert(src_idx < src_end, "oob"); |
|
1240 |
--dst_idx; |
|
1241 |
continue; // rerun loop after skipping this position |
|
1242 |
} |
|
1243 |
} |
|
1244 |
||
1245 |
if (src_type == NULL && fix_null_src_type) |
|
1246 |
// explicit null in this case matches any dest reference |
|
1247 |
src_type = (java_lang_Class::is_primitive(dst_type) ? object_java_mirror() : dst_type); |
|
1248 |
||
1249 |
// Compare the two argument types. |
|
1250 |
if (src_type != dst_type) { |
|
1251 |
if (src_type == NULL) return "not enough arguments"; |
|
1252 |
if (dst_type == NULL) return "too many arguments"; |
|
4094
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
1253 |
err = check_argument_type_change(src_type, dst_type, dst_idx, raw); |
2534 | 1254 |
if (err != NULL) return err; |
1255 |
} |
|
1256 |
} |
|
1257 |
||
1258 |
// Now compare return types also. |
|
8676
9098d4e927e1
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8675
diff
changeset
|
1259 |
oop src_rtype = java_lang_invoke_MethodType::rtype(src_mtype); |
9098d4e927e1
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8675
diff
changeset
|
1260 |
oop dst_rtype = java_lang_invoke_MethodType::rtype(dst_mtype); |
2534 | 1261 |
if (src_rtype != dst_rtype) { |
4094
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
1262 |
err = check_return_type_change(dst_rtype, src_rtype, raw); // note reversal! |
2534 | 1263 |
if (err != NULL) return err; |
1264 |
} |
|
1265 |
||
1266 |
assert(err == NULL, ""); |
|
1267 |
return NULL; // all is well |
|
1268 |
} |
|
1269 |
||
1270 |
||
1271 |
const char* MethodHandles::check_argument_type_change(BasicType src_type, |
|
4094
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
1272 |
klassOop src_klass, |
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
1273 |
BasicType dst_type, |
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
1274 |
klassOop dst_klass, |
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
1275 |
int argnum, |
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
1276 |
bool raw) { |
2534 | 1277 |
const char* err = NULL; |
4094
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
1278 |
bool for_return = (argnum < 0); |
2534 | 1279 |
|
1280 |
// just in case: |
|
1281 |
if (src_type == T_ARRAY) src_type = T_OBJECT; |
|
1282 |
if (dst_type == T_ARRAY) dst_type = T_OBJECT; |
|
1283 |
||
1284 |
// Produce some nice messages if VerifyMethodHandles is turned on: |
|
4094
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
1285 |
if (!same_basic_type_for_arguments(src_type, dst_type, raw, for_return)) { |
2534 | 1286 |
if (src_type == T_OBJECT) { |
4094
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
1287 |
if (raw && dst_type == T_INT && is_always_null_type(src_klass)) |
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
1288 |
return NULL; // OK to convert a null pointer to a garbage int |
2534 | 1289 |
err = ((argnum >= 0) |
1290 |
? "type mismatch: passing a %s for method argument #%d, which expects primitive %s" |
|
1291 |
: "type mismatch: returning a %s, but caller expects primitive %s"); |
|
1292 |
} else if (dst_type == T_OBJECT) { |
|
4094
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
1293 |
err = ((argnum >= 0) |
2534 | 1294 |
? "type mismatch: passing a primitive %s for method argument #%d, which expects %s" |
1295 |
: "type mismatch: returning a primitive %s, but caller expects %s"); |
|
1296 |
} else { |
|
4094
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
1297 |
err = ((argnum >= 0) |
2534 | 1298 |
? "type mismatch: passing a %s for method argument #%d, which expects %s" |
1299 |
: "type mismatch: returning a %s, but caller expects %s"); |
|
1300 |
} |
|
4094
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
1301 |
} else if (src_type == T_OBJECT && dst_type == T_OBJECT && |
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
1302 |
class_cast_needed(src_klass, dst_klass)) { |
2534 | 1303 |
if (!class_cast_needed(dst_klass, src_klass)) { |
4094
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
1304 |
if (raw) |
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
1305 |
return NULL; // reverse cast is OK; the MH target is trusted to enforce it |
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
1306 |
err = ((argnum >= 0) |
2534 | 1307 |
? "cast required: passing a %s for method argument #%d, which expects %s" |
1308 |
: "cast required: returning a %s, but caller expects %s"); |
|
1309 |
} else { |
|
4094
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
1310 |
err = ((argnum >= 0) |
2534 | 1311 |
? "reference mismatch: passing a %s for method argument #%d, which expects %s" |
1312 |
: "reference mismatch: returning a %s, but caller expects %s"); |
|
1313 |
} |
|
1314 |
} else { |
|
1315 |
// passed the obstacle course |
|
1316 |
return NULL; |
|
1317 |
} |
|
1318 |
||
1319 |
// format, format, format |
|
1320 |
const char* src_name = type2name(src_type); |
|
1321 |
const char* dst_name = type2name(dst_type); |
|
1322 |
if (src_name == NULL) src_name = "unknown type"; |
|
1323 |
if (dst_name == NULL) dst_name = "unknown type"; |
|
9134
189a8c094016
6987991: JSR 292 phpreboot test/testtracefun2.phpr segfaults
jrose
parents:
9116
diff
changeset
|
1324 |
if (src_type == T_OBJECT) |
189a8c094016
6987991: JSR 292 phpreboot test/testtracefun2.phpr segfaults
jrose
parents:
9116
diff
changeset
|
1325 |
src_name = (src_klass != NULL) ? Klass::cast(src_klass)->external_name() : "an unresolved class"; |
189a8c094016
6987991: JSR 292 phpreboot test/testtracefun2.phpr segfaults
jrose
parents:
9116
diff
changeset
|
1326 |
if (dst_type == T_OBJECT) |
189a8c094016
6987991: JSR 292 phpreboot test/testtracefun2.phpr segfaults
jrose
parents:
9116
diff
changeset
|
1327 |
dst_name = (dst_klass != NULL) ? Klass::cast(dst_klass)->external_name() : "an unresolved class"; |
2534 | 1328 |
|
1329 |
size_t msglen = strlen(err) + strlen(src_name) + strlen(dst_name) + (argnum < 10 ? 1 : 11); |
|
1330 |
char* msg = NEW_RESOURCE_ARRAY(char, msglen + 1); |
|
1331 |
if (argnum >= 0) { |
|
1332 |
assert(strstr(err, "%d") != NULL, ""); |
|
1333 |
jio_snprintf(msg, msglen, err, src_name, argnum, dst_name); |
|
1334 |
} else { |
|
1335 |
assert(strstr(err, "%d") == NULL, ""); |
|
1336 |
jio_snprintf(msg, msglen, err, src_name, dst_name); |
|
1337 |
} |
|
1338 |
return msg; |
|
1339 |
} |
|
1340 |
||
1341 |
// Compute the depth within the stack of the given argument, i.e., |
|
1342 |
// the combined size of arguments to the right of the given argument. |
|
1343 |
// For the last argument (ptypes.length-1) this will be zero. |
|
1344 |
// For the first argument (0) this will be the size of all |
|
1345 |
// arguments but that one. For the special number -1, this |
|
1346 |
// will be the size of all arguments, including the first. |
|
1347 |
// If the argument is neither -1 nor a valid argument index, |
|
1348 |
// then return a negative number. Otherwise, the result |
|
1349 |
// is in the range [0..vmslots] inclusive. |
|
1350 |
int MethodHandles::argument_slot(oop method_type, int arg) { |
|
8676
9098d4e927e1
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8675
diff
changeset
|
1351 |
objArrayOop ptypes = java_lang_invoke_MethodType::ptypes(method_type); |
2534 | 1352 |
int argslot = 0; |
1353 |
int len = ptypes->length(); |
|
1354 |
if (arg < -1 || arg >= len) return -99; |
|
1355 |
for (int i = len-1; i > arg; i--) { |
|
1356 |
BasicType bt = java_lang_Class::as_BasicType(ptypes->obj_at(i)); |
|
1357 |
argslot += type2size[bt]; |
|
1358 |
} |
|
1359 |
assert(argument_slot_to_argnum(method_type, argslot) == arg, "inverse works"); |
|
1360 |
return argslot; |
|
1361 |
} |
|
1362 |
||
1363 |
// Given a slot number, return the argument number. |
|
1364 |
int MethodHandles::argument_slot_to_argnum(oop method_type, int query_argslot) { |
|
8676
9098d4e927e1
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8675
diff
changeset
|
1365 |
objArrayOop ptypes = java_lang_invoke_MethodType::ptypes(method_type); |
2534 | 1366 |
int argslot = 0; |
1367 |
int len = ptypes->length(); |
|
1368 |
for (int i = len-1; i >= 0; i--) { |
|
1369 |
if (query_argslot == argslot) return i; |
|
1370 |
BasicType bt = java_lang_Class::as_BasicType(ptypes->obj_at(i)); |
|
1371 |
argslot += type2size[bt]; |
|
1372 |
} |
|
1373 |
// return pseudo-arg deepest in stack: |
|
1374 |
if (query_argslot == argslot) return -1; |
|
1375 |
return -99; // oob slot, or splitting a double-slot arg |
|
1376 |
} |
|
1377 |
||
1378 |
methodHandle MethodHandles::dispatch_decoded_method(methodHandle m, |
|
1379 |
KlassHandle receiver_limit, |
|
1380 |
int decode_flags, |
|
1381 |
KlassHandle receiver_klass, |
|
1382 |
TRAPS) { |
|
1383 |
assert((decode_flags & ~_DMF_DIRECT_MASK) == 0, "must be direct method reference"); |
|
1384 |
assert((decode_flags & _dmf_has_receiver) != 0, "must have a receiver or first reference argument"); |
|
1385 |
||
1386 |
if (!m->is_static() && |
|
1387 |
(receiver_klass.is_null() || !receiver_klass->is_subtype_of(m->method_holder()))) |
|
1388 |
// given type does not match class of method, or receiver is null! |
|
1389 |
// caller should have checked this, but let's be extra careful... |
|
1390 |
return methodHandle(); |
|
1391 |
||
1392 |
if (receiver_limit.not_null() && |
|
1393 |
(receiver_klass.not_null() && !receiver_klass->is_subtype_of(receiver_limit()))) |
|
1394 |
// given type is not limited to the receiver type |
|
1395 |
// note that a null receiver can match any reference value, for a static method |
|
1396 |
return methodHandle(); |
|
1397 |
||
1398 |
if (!(decode_flags & MethodHandles::_dmf_does_dispatch)) { |
|
1399 |
// pre-dispatched or static method (null receiver is OK for static) |
|
1400 |
return m; |
|
1401 |
||
1402 |
} else if (receiver_klass.is_null()) { |
|
1403 |
// null receiver value; cannot dispatch |
|
1404 |
return methodHandle(); |
|
1405 |
||
1406 |
} else if (!(decode_flags & MethodHandles::_dmf_from_interface)) { |
|
1407 |
// perform virtual dispatch |
|
1408 |
int vtable_index = m->vtable_index(); |
|
1409 |
guarantee(vtable_index >= 0, "valid vtable index"); |
|
1410 |
||
1411 |
// receiver_klass might be an arrayKlassOop but all vtables start at |
|
1412 |
// the same place. The cast is to avoid virtual call and assertion. |
|
1413 |
// See also LinkResolver::runtime_resolve_virtual_method. |
|
1414 |
instanceKlass* inst = (instanceKlass*)Klass::cast(receiver_klass()); |
|
1415 |
DEBUG_ONLY(inst->verify_vtable_index(vtable_index)); |
|
1416 |
methodOop m_oop = inst->method_at_vtable(vtable_index); |
|
1417 |
return methodHandle(THREAD, m_oop); |
|
1418 |
||
1419 |
} else { |
|
1420 |
// perform interface dispatch |
|
1421 |
int itable_index = klassItable::compute_itable_index(m()); |
|
1422 |
guarantee(itable_index >= 0, "valid itable index"); |
|
1423 |
instanceKlass* inst = instanceKlass::cast(receiver_klass()); |
|
1424 |
methodOop m_oop = inst->method_at_itable(m->method_holder(), itable_index, THREAD); |
|
1425 |
return methodHandle(THREAD, m_oop); |
|
1426 |
} |
|
1427 |
} |
|
1428 |
||
1429 |
void MethodHandles::verify_DirectMethodHandle(Handle mh, methodHandle m, TRAPS) { |
|
1430 |
// Verify type. |
|
8676
9098d4e927e1
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8675
diff
changeset
|
1431 |
Handle mtype(THREAD, java_lang_invoke_MethodHandle::type(mh())); |
2534 | 1432 |
verify_method_type(m, mtype, false, KlassHandle(), CHECK); |
1433 |
||
1434 |
// Verify vmslots. |
|
8676
9098d4e927e1
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8675
diff
changeset
|
1435 |
if (java_lang_invoke_MethodHandle::vmslots(mh()) != m->size_of_parameters()) { |
2534 | 1436 |
THROW_MSG(vmSymbols::java_lang_InternalError(), "bad vmslots in DMH"); |
1437 |
} |
|
1438 |
} |
|
1439 |
||
1440 |
void MethodHandles::init_DirectMethodHandle(Handle mh, methodHandle m, bool do_dispatch, TRAPS) { |
|
1441 |
// Check arguments. |
|
1442 |
if (mh.is_null() || m.is_null() || |
|
1443 |
(!do_dispatch && m->is_abstract())) { |
|
1444 |
THROW(vmSymbols::java_lang_InternalError()); |
|
1445 |
} |
|
1446 |
||
8676
9098d4e927e1
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8675
diff
changeset
|
1447 |
java_lang_invoke_MethodHandle::init_vmslots(mh()); |
2534 | 1448 |
|
1449 |
if (VerifyMethodHandles) { |
|
1450 |
// The privileged code which invokes this routine should not make |
|
1451 |
// a mistake about types, but it's better to verify. |
|
1452 |
verify_DirectMethodHandle(mh, m, CHECK); |
|
1453 |
} |
|
1454 |
||
1455 |
// Finally, after safety checks are done, link to the target method. |
|
1456 |
// We will follow the same path as the latter part of |
|
1457 |
// InterpreterRuntime::resolve_invoke(), which first finds the method |
|
1458 |
// and then decides how to populate the constant pool cache entry |
|
1459 |
// that links the interpreter calls to the method. We need the same |
|
1460 |
// bits, and will use the same calling sequence code. |
|
1461 |
||
1462 |
int vmindex = methodOopDesc::garbage_vtable_index; |
|
1463 |
oop vmtarget = NULL; |
|
1464 |
||
1465 |
instanceKlass::cast(m->method_holder())->link_class(CHECK); |
|
1466 |
||
1467 |
MethodHandleEntry* me = NULL; |
|
1468 |
if (do_dispatch && Klass::cast(m->method_holder())->is_interface()) { |
|
1469 |
// We are simulating an invokeinterface instruction. |
|
1470 |
// (We might also be simulating an invokevirtual on a miranda method, |
|
1471 |
// but it is safe to treat it as an invokeinterface.) |
|
1472 |
assert(!m->can_be_statically_bound(), "no final methods on interfaces"); |
|
1473 |
vmindex = klassItable::compute_itable_index(m()); |
|
1474 |
assert(vmindex >= 0, "(>=0) == do_dispatch"); |
|
1475 |
// Set up same bits as ConstantPoolCacheEntry::set_interface_call(). |
|
1476 |
vmtarget = m->method_holder(); // the interface |
|
1477 |
me = MethodHandles::entry(MethodHandles::_invokeinterface_mh); |
|
1478 |
} else if (!do_dispatch || m->can_be_statically_bound()) { |
|
1479 |
// We are simulating an invokestatic or invokespecial instruction. |
|
1480 |
// Set up the method pointer, just like ConstantPoolCacheEntry::set_method(). |
|
1481 |
vmtarget = m(); |
|
1482 |
// this does not help dispatch, but it will make it possible to parse this MH: |
|
1483 |
vmindex = methodOopDesc::nonvirtual_vtable_index; |
|
1484 |
assert(vmindex < 0, "(>=0) == do_dispatch"); |
|
1485 |
if (!m->is_static()) { |
|
1486 |
me = MethodHandles::entry(MethodHandles::_invokespecial_mh); |
|
1487 |
} else { |
|
1488 |
me = MethodHandles::entry(MethodHandles::_invokestatic_mh); |
|
1489 |
// Part of the semantics of a static call is an initialization barrier. |
|
1490 |
// For a DMH, it is done now, when the handle is created. |
|
1491 |
Klass* k = Klass::cast(m->method_holder()); |
|
1492 |
if (k->should_be_initialized()) { |
|
1493 |
k->initialize(CHECK); |
|
1494 |
} |
|
1495 |
} |
|
1496 |
} else { |
|
1497 |
// We are simulating an invokevirtual instruction. |
|
1498 |
// Set up the vtable index, just like ConstantPoolCacheEntry::set_method(). |
|
1499 |
// The key logic is LinkResolver::runtime_resolve_virtual_method. |
|
1500 |
vmindex = m->vtable_index(); |
|
1501 |
vmtarget = m->method_holder(); |
|
1502 |
me = MethodHandles::entry(MethodHandles::_invokevirtual_mh); |
|
1503 |
} |
|
1504 |
||
1505 |
if (me == NULL) { THROW(vmSymbols::java_lang_InternalError()); } |
|
1506 |
||
8676
9098d4e927e1
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8675
diff
changeset
|
1507 |
java_lang_invoke_DirectMethodHandle::set_vmtarget(mh(), vmtarget); |
9098d4e927e1
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8675
diff
changeset
|
1508 |
java_lang_invoke_DirectMethodHandle::set_vmindex(mh(), vmindex); |
2534 | 1509 |
DEBUG_ONLY(int flags; klassOop rlimit); |
1510 |
assert(MethodHandles::decode_method(mh(), rlimit, flags) == m(), |
|
1511 |
"properly stored for later decoding"); |
|
1512 |
DEBUG_ONLY(bool actual_do_dispatch = ((flags & _dmf_does_dispatch) != 0)); |
|
1513 |
assert(!(actual_do_dispatch && !do_dispatch), |
|
1514 |
"do not perform dispatch if !do_dispatch specified"); |
|
1515 |
assert(actual_do_dispatch == (vmindex >= 0), "proper later decoding of do_dispatch"); |
|
1516 |
assert(decode_MethodHandle_stack_pushes(mh()) == 0, "DMH does not move stack"); |
|
1517 |
||
1518 |
// Done! |
|
8676
9098d4e927e1
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8675
diff
changeset
|
1519 |
java_lang_invoke_MethodHandle::set_vmentry(mh(), me); |
2534 | 1520 |
} |
1521 |
||
1522 |
void MethodHandles::verify_BoundMethodHandle_with_receiver(Handle mh, |
|
1523 |
methodHandle m, |
|
1524 |
TRAPS) { |
|
1525 |
// Verify type. |
|
8676
9098d4e927e1
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8675
diff
changeset
|
1526 |
oop receiver = java_lang_invoke_BoundMethodHandle::argument(mh()); |
9098d4e927e1
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8675
diff
changeset
|
1527 |
Handle mtype(THREAD, java_lang_invoke_MethodHandle::type(mh())); |
2534 | 1528 |
KlassHandle bound_recv_type; |
1529 |
if (receiver != NULL) bound_recv_type = KlassHandle(THREAD, receiver->klass()); |
|
1530 |
verify_method_type(m, mtype, true, bound_recv_type, CHECK); |
|
1531 |
||
1532 |
int receiver_pos = m->size_of_parameters() - 1; |
|
1533 |
||
1534 |
// Verify MH.vmargslot, which should point at the bound receiver. |
|
8676
9098d4e927e1
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8675
diff
changeset
|
1535 |
verify_vmargslot(mh, -1, java_lang_invoke_BoundMethodHandle::vmargslot(mh()), CHECK); |
2534 | 1536 |
//verify_vmslots(mh, CHECK); |
1537 |
||
1538 |
// Verify vmslots. |
|
8676
9098d4e927e1
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8675
diff
changeset
|
1539 |
if (java_lang_invoke_MethodHandle::vmslots(mh()) != receiver_pos) { |
2534 | 1540 |
THROW_MSG(vmSymbols::java_lang_InternalError(), "bad vmslots in BMH (receiver)"); |
1541 |
} |
|
1542 |
} |
|
1543 |
||
1544 |
// Initialize a BMH with a receiver bound directly to a methodOop. |
|
1545 |
void MethodHandles::init_BoundMethodHandle_with_receiver(Handle mh, |
|
1546 |
methodHandle original_m, |
|
1547 |
KlassHandle receiver_limit, |
|
1548 |
int decode_flags, |
|
1549 |
TRAPS) { |
|
1550 |
// Check arguments. |
|
1551 |
if (mh.is_null() || original_m.is_null()) { |
|
1552 |
THROW(vmSymbols::java_lang_InternalError()); |
|
1553 |
} |
|
1554 |
||
1555 |
KlassHandle receiver_klass; |
|
1556 |
{ |
|
8676
9098d4e927e1
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8675
diff
changeset
|
1557 |
oop receiver_oop = java_lang_invoke_BoundMethodHandle::argument(mh()); |
2534 | 1558 |
if (receiver_oop != NULL) |
1559 |
receiver_klass = KlassHandle(THREAD, receiver_oop->klass()); |
|
1560 |
} |
|
1561 |
methodHandle m = dispatch_decoded_method(original_m, |
|
1562 |
receiver_limit, decode_flags, |
|
1563 |
receiver_klass, |
|
1564 |
CHECK); |
|
1565 |
if (m.is_null()) { THROW(vmSymbols::java_lang_InternalError()); } |
|
1566 |
if (m->is_abstract()) { THROW(vmSymbols::java_lang_AbstractMethodError()); } |
|
1567 |
||
8676
9098d4e927e1
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8675
diff
changeset
|
1568 |
java_lang_invoke_MethodHandle::init_vmslots(mh()); |
2534 | 1569 |
|
1570 |
if (VerifyMethodHandles) { |
|
1571 |
verify_BoundMethodHandle_with_receiver(mh, m, CHECK); |
|
1572 |
} |
|
1573 |
||
8676
9098d4e927e1
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8675
diff
changeset
|
1574 |
java_lang_invoke_BoundMethodHandle::set_vmtarget(mh(), m()); |
2534 | 1575 |
|
1576 |
DEBUG_ONLY(int junk; klassOop junk2); |
|
1577 |
assert(MethodHandles::decode_method(mh(), junk2, junk) == m(), "properly stored for later decoding"); |
|
1578 |
assert(decode_MethodHandle_stack_pushes(mh()) == 1, "BMH pushes one stack slot"); |
|
1579 |
||
1580 |
// Done! |
|
8676
9098d4e927e1
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8675
diff
changeset
|
1581 |
java_lang_invoke_MethodHandle::set_vmentry(mh(), MethodHandles::entry(MethodHandles::_bound_ref_direct_mh)); |
2534 | 1582 |
} |
1583 |
||
1584 |
void MethodHandles::verify_BoundMethodHandle(Handle mh, Handle target, int argnum, |
|
1585 |
bool direct_to_method, TRAPS) { |
|
1586 |
Handle ptype_handle(THREAD, |
|
8676
9098d4e927e1
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8675
diff
changeset
|
1587 |
java_lang_invoke_MethodType::ptype(java_lang_invoke_MethodHandle::type(target()), argnum)); |
2534 | 1588 |
KlassHandle ptype_klass; |
1589 |
BasicType ptype = java_lang_Class::as_BasicType(ptype_handle(), &ptype_klass); |
|
1590 |
int slots_pushed = type2size[ptype]; |
|
1591 |
||
8676
9098d4e927e1
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8675
diff
changeset
|
1592 |
oop argument = java_lang_invoke_BoundMethodHandle::argument(mh()); |
2534 | 1593 |
|
1594 |
const char* err = NULL; |
|
1595 |
||
1596 |
switch (ptype) { |
|
1597 |
case T_OBJECT: |
|
1598 |
if (argument != NULL) |
|
1599 |
// we must implicitly convert from the arg type to the outgoing ptype |
|
1600 |
err = check_argument_type_change(T_OBJECT, argument->klass(), ptype, ptype_klass(), argnum); |
|
1601 |
break; |
|
1602 |
||
1603 |
case T_ARRAY: case T_VOID: |
|
1604 |
assert(false, "array, void do not appear here"); |
|
1605 |
default: |
|
1606 |
if (ptype != T_INT && !is_subword_type(ptype)) { |
|
1607 |
err = "unexpected parameter type"; |
|
1608 |
break; |
|
1609 |
} |
|
1610 |
// check subrange of Integer.value, if necessary |
|
4571 | 1611 |
if (argument == NULL || argument->klass() != SystemDictionary::Integer_klass()) { |
2534 | 1612 |
err = "bound integer argument must be of type java.lang.Integer"; |
1613 |
break; |
|
1614 |
} |
|
1615 |
if (ptype != T_INT) { |
|
1616 |
int value_offset = java_lang_boxing_object::value_offset_in_bytes(T_INT); |
|
1617 |
jint value = argument->int_field(value_offset); |
|
6775
633e4ce534ac
6987555: JSR 292 unboxing to a boolean value fails on big-endian SPARC
twisti
parents:
6418
diff
changeset
|
1618 |
int vminfo = adapter_unbox_subword_vminfo(ptype); |
2534 | 1619 |
jint subword = truncate_subword_from_vminfo(value, vminfo); |
1620 |
if (value != subword) { |
|
1621 |
err = "bound subword value does not fit into the subword type"; |
|
1622 |
break; |
|
1623 |
} |
|
1624 |
} |
|
1625 |
break; |
|
1626 |
case T_FLOAT: |
|
1627 |
case T_DOUBLE: |
|
1628 |
case T_LONG: |
|
1629 |
{ |
|
1630 |
// we must implicitly convert from the unboxed arg type to the outgoing ptype |
|
1631 |
BasicType argbox = java_lang_boxing_object::basic_type(argument); |
|
1632 |
if (argbox != ptype) { |
|
1633 |
err = check_argument_type_change(T_OBJECT, (argument == NULL |
|
4571 | 1634 |
? SystemDictionary::Object_klass() |
2534 | 1635 |
: argument->klass()), |
1636 |
ptype, ptype_klass(), argnum); |
|
1637 |
assert(err != NULL, "this must be an error"); |
|
1638 |
} |
|
1639 |
break; |
|
1640 |
} |
|
1641 |
} |
|
1642 |
||
1643 |
if (err == NULL) { |
|
1644 |
DEBUG_ONLY(int this_pushes = decode_MethodHandle_stack_pushes(mh())); |
|
1645 |
if (direct_to_method) { |
|
1646 |
assert(this_pushes == slots_pushed, "BMH pushes one or two stack slots"); |
|
1647 |
assert(slots_pushed <= MethodHandlePushLimit, ""); |
|
1648 |
} else { |
|
4094
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
1649 |
int target_pushes = decode_MethodHandle_stack_pushes(target()); |
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
1650 |
assert(this_pushes == slots_pushed + target_pushes, "BMH stack motion must be correct"); |
2534 | 1651 |
// do not blow the stack; use a Java-based adapter if this limit is exceeded |
4567
7fc02fbe5c7a
6893268: additional dynamic language related optimizations in C2
twisti
parents:
4429
diff
changeset
|
1652 |
// FIXME |
7fc02fbe5c7a
6893268: additional dynamic language related optimizations in C2
twisti
parents:
4429
diff
changeset
|
1653 |
// if (slots_pushed + target_pushes > MethodHandlePushLimit) |
7fc02fbe5c7a
6893268: additional dynamic language related optimizations in C2
twisti
parents:
4429
diff
changeset
|
1654 |
// err = "too many bound parameters"; |
2534 | 1655 |
} |
1656 |
} |
|
1657 |
||
1658 |
if (err == NULL) { |
|
1659 |
// Verify the rest of the method type. |
|
8676
9098d4e927e1
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8675
diff
changeset
|
1660 |
err = check_method_type_insertion(java_lang_invoke_MethodHandle::type(mh()), |
2534 | 1661 |
argnum, ptype_handle(), |
8676
9098d4e927e1
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8675
diff
changeset
|
1662 |
java_lang_invoke_MethodHandle::type(target())); |
2534 | 1663 |
} |
1664 |
||
1665 |
if (err != NULL) { |
|
1666 |
THROW_MSG(vmSymbols::java_lang_InternalError(), err); |
|
1667 |
} |
|
1668 |
} |
|
1669 |
||
1670 |
void MethodHandles::init_BoundMethodHandle(Handle mh, Handle target, int argnum, TRAPS) { |
|
1671 |
// Check arguments. |
|
8676
9098d4e927e1
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8675
diff
changeset
|
1672 |
if (mh.is_null() || target.is_null() || !java_lang_invoke_MethodHandle::is_instance(target())) { |
2534 | 1673 |
THROW(vmSymbols::java_lang_InternalError()); |
1674 |
} |
|
1675 |
||
8676
9098d4e927e1
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8675
diff
changeset
|
1676 |
java_lang_invoke_MethodHandle::init_vmslots(mh()); |
2534 | 1677 |
|
1678 |
if (VerifyMethodHandles) { |
|
1679 |
int insert_after = argnum - 1; |
|
8676
9098d4e927e1
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8675
diff
changeset
|
1680 |
verify_vmargslot(mh, insert_after, java_lang_invoke_BoundMethodHandle::vmargslot(mh()), CHECK); |
2534 | 1681 |
verify_vmslots(mh, CHECK); |
1682 |
} |
|
1683 |
||
4567
7fc02fbe5c7a
6893268: additional dynamic language related optimizations in C2
twisti
parents:
4429
diff
changeset
|
1684 |
// Get bound type and required slots. |
8676
9098d4e927e1
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8675
diff
changeset
|
1685 |
oop ptype_oop = java_lang_invoke_MethodType::ptype(java_lang_invoke_MethodHandle::type(target()), argnum); |
4567
7fc02fbe5c7a
6893268: additional dynamic language related optimizations in C2
twisti
parents:
4429
diff
changeset
|
1686 |
BasicType ptype = java_lang_Class::as_BasicType(ptype_oop); |
7fc02fbe5c7a
6893268: additional dynamic language related optimizations in C2
twisti
parents:
4429
diff
changeset
|
1687 |
int slots_pushed = type2size[ptype]; |
7fc02fbe5c7a
6893268: additional dynamic language related optimizations in C2
twisti
parents:
4429
diff
changeset
|
1688 |
|
2534 | 1689 |
// If (a) the target is a direct non-dispatched method handle, |
1690 |
// or (b) the target is a dispatched direct method handle and we |
|
1691 |
// are binding the receiver, cut out the middle-man. |
|
1692 |
// Do this by decoding the DMH and using its methodOop directly as vmtarget. |
|
1693 |
bool direct_to_method = false; |
|
1694 |
if (OptimizeMethodHandles && |
|
1695 |
target->klass() == SystemDictionary::DirectMethodHandle_klass() && |
|
8676
9098d4e927e1
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8675
diff
changeset
|
1696 |
(argnum == 0 || java_lang_invoke_DirectMethodHandle::vmindex(target()) < 0)) { |
2534 | 1697 |
int decode_flags = 0; klassOop receiver_limit_oop = NULL; |
1698 |
methodHandle m(THREAD, decode_method(target(), receiver_limit_oop, decode_flags)); |
|
1699 |
if (m.is_null()) { THROW_MSG(vmSymbols::java_lang_InternalError(), "DMH failed to decode"); } |
|
4567
7fc02fbe5c7a
6893268: additional dynamic language related optimizations in C2
twisti
parents:
4429
diff
changeset
|
1700 |
DEBUG_ONLY(int m_vmslots = m->size_of_parameters() - slots_pushed); // pos. of 1st arg. |
8676
9098d4e927e1
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8675
diff
changeset
|
1701 |
assert(java_lang_invoke_BoundMethodHandle::vmslots(mh()) == m_vmslots, "type w/ m sig"); |
2534 | 1702 |
if (argnum == 0 && (decode_flags & _dmf_has_receiver) != 0) { |
1703 |
KlassHandle receiver_limit(THREAD, receiver_limit_oop); |
|
1704 |
init_BoundMethodHandle_with_receiver(mh, m, |
|
1705 |
receiver_limit, decode_flags, |
|
1706 |
CHECK); |
|
1707 |
return; |
|
1708 |
} |
|
1709 |
||
1710 |
// Even if it is not a bound receiver, we still might be able |
|
1711 |
// to bind another argument and still invoke the methodOop directly. |
|
1712 |
if (!(decode_flags & _dmf_does_dispatch)) { |
|
1713 |
direct_to_method = true; |
|
8676
9098d4e927e1
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8675
diff
changeset
|
1714 |
java_lang_invoke_BoundMethodHandle::set_vmtarget(mh(), m()); |
2534 | 1715 |
} |
1716 |
} |
|
1717 |
if (!direct_to_method) |
|
8676
9098d4e927e1
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8675
diff
changeset
|
1718 |
java_lang_invoke_BoundMethodHandle::set_vmtarget(mh(), target()); |
2534 | 1719 |
|
1720 |
if (VerifyMethodHandles) { |
|
1721 |
verify_BoundMethodHandle(mh, target, argnum, direct_to_method, CHECK); |
|
1722 |
} |
|
1723 |
||
1724 |
// Next question: Is this a ref, int, or long bound value? |
|
1725 |
MethodHandleEntry* me = NULL; |
|
1726 |
if (ptype == T_OBJECT) { |
|
1727 |
if (direct_to_method) me = MethodHandles::entry(_bound_ref_direct_mh); |
|
1728 |
else me = MethodHandles::entry(_bound_ref_mh); |
|
1729 |
} else if (slots_pushed == 2) { |
|
1730 |
if (direct_to_method) me = MethodHandles::entry(_bound_long_direct_mh); |
|
1731 |
else me = MethodHandles::entry(_bound_long_mh); |
|
1732 |
} else if (slots_pushed == 1) { |
|
1733 |
if (direct_to_method) me = MethodHandles::entry(_bound_int_direct_mh); |
|
1734 |
else me = MethodHandles::entry(_bound_int_mh); |
|
1735 |
} else { |
|
1736 |
assert(false, ""); |
|
1737 |
} |
|
1738 |
||
1739 |
// Done! |
|
8676
9098d4e927e1
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8675
diff
changeset
|
1740 |
java_lang_invoke_MethodHandle::set_vmentry(mh(), me); |
2534 | 1741 |
} |
1742 |
||
1743 |
static void throw_InternalError_for_bad_conversion(int conversion, const char* err, TRAPS) { |
|
1744 |
char msg[200]; |
|
1745 |
jio_snprintf(msg, sizeof(msg), "bad adapter (conversion=0x%08x): %s", conversion, err); |
|
1746 |
THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), msg); |
|
1747 |
} |
|
1748 |
||
1749 |
void MethodHandles::verify_AdapterMethodHandle(Handle mh, int argnum, TRAPS) { |
|
8676
9098d4e927e1
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8675
diff
changeset
|
1750 |
jint conversion = java_lang_invoke_AdapterMethodHandle::conversion(mh()); |
9098d4e927e1
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8675
diff
changeset
|
1751 |
int argslot = java_lang_invoke_AdapterMethodHandle::vmargslot(mh()); |
2534 | 1752 |
|
1753 |
verify_vmargslot(mh, argnum, argslot, CHECK); |
|
1754 |
verify_vmslots(mh, CHECK); |
|
1755 |
||
1756 |
jint conv_op = adapter_conversion_op(conversion); |
|
1757 |
if (!conv_op_valid(conv_op)) { |
|
1758 |
throw_InternalError_for_bad_conversion(conversion, "unknown conversion op", THREAD); |
|
1759 |
return; |
|
1760 |
} |
|
1761 |
EntryKind ek = adapter_entry_kind(conv_op); |
|
1762 |
||
1763 |
int stack_move = adapter_conversion_stack_move(conversion); |
|
1764 |
BasicType src = adapter_conversion_src_type(conversion); |
|
1765 |
BasicType dest = adapter_conversion_dest_type(conversion); |
|
1766 |
int vminfo = adapter_conversion_vminfo(conversion); // should be zero |
|
1767 |
||
8676
9098d4e927e1
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8675
diff
changeset
|
1768 |
Handle argument(THREAD, java_lang_invoke_AdapterMethodHandle::argument(mh())); |
9098d4e927e1
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8675
diff
changeset
|
1769 |
Handle target(THREAD, java_lang_invoke_AdapterMethodHandle::vmtarget(mh())); |
9098d4e927e1
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8675
diff
changeset
|
1770 |
Handle src_mtype(THREAD, java_lang_invoke_MethodHandle::type(mh())); |
9098d4e927e1
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8675
diff
changeset
|
1771 |
Handle dst_mtype(THREAD, java_lang_invoke_MethodHandle::type(target())); |
2534 | 1772 |
|
1773 |
const char* err = NULL; |
|
1774 |
||
1775 |
if (err == NULL) { |
|
1776 |
// Check that the correct argument is supplied, but only if it is required. |
|
1777 |
switch (ek) { |
|
1778 |
case _adapter_check_cast: // target type of cast |
|
1779 |
case _adapter_ref_to_prim: // wrapper type from which to unbox |
|
1780 |
case _adapter_prim_to_ref: // wrapper type to box into |
|
1781 |
case _adapter_collect_args: // array type to collect into |
|
1782 |
case _adapter_spread_args: // array type to spread from |
|
1783 |
if (!java_lang_Class::is_instance(argument()) |
|
1784 |
|| java_lang_Class::is_primitive(argument())) |
|
1785 |
{ err = "adapter requires argument of type java.lang.Class"; break; } |
|
1786 |
if (ek == _adapter_collect_args || |
|
1787 |
ek == _adapter_spread_args) { |
|
1788 |
// Make sure it is a suitable collection type. (Array, for now.) |
|
1789 |
Klass* ak = Klass::cast(java_lang_Class::as_klassOop(argument())); |
|
1790 |
if (!ak->oop_is_objArray()) { |
|
1791 |
{ err = "adapter requires argument of type java.lang.Class<Object[]>"; break; } |
|
1792 |
} |
|
1793 |
} |
|
1794 |
break; |
|
1795 |
case _adapter_flyby: |
|
1796 |
case _adapter_ricochet: |
|
8676
9098d4e927e1
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8675
diff
changeset
|
1797 |
if (!java_lang_invoke_MethodHandle::is_instance(argument())) |
2534 | 1798 |
{ err = "MethodHandle adapter argument required"; break; } |
1799 |
break; |
|
1800 |
default: |
|
1801 |
if (argument.not_null()) |
|
1802 |
{ err = "adapter has spurious argument"; break; } |
|
1803 |
break; |
|
1804 |
} |
|
1805 |
} |
|
1806 |
||
1807 |
if (err == NULL) { |
|
1808 |
// Check that the src/dest types are supplied if needed. |
|
1809 |
switch (ek) { |
|
4094
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
1810 |
case _adapter_check_cast: |
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
1811 |
if (src != T_OBJECT || dest != T_OBJECT) { |
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
1812 |
err = "adapter requires object src/dest conversion subfields"; |
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
1813 |
} |
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
1814 |
break; |
2534 | 1815 |
case _adapter_prim_to_prim: |
1816 |
if (!is_java_primitive(src) || !is_java_primitive(dest) || src == dest) { |
|
1817 |
err = "adapter requires primitive src/dest conversion subfields"; break; |
|
1818 |
} |
|
1819 |
if ( (src == T_FLOAT || src == T_DOUBLE) && !(dest == T_FLOAT || dest == T_DOUBLE) || |
|
1820 |
!(src == T_FLOAT || src == T_DOUBLE) && (dest == T_FLOAT || dest == T_DOUBLE)) { |
|
1821 |
err = "adapter cannot convert beween floating and fixed-point"; break; |
|
1822 |
} |
|
1823 |
break; |
|
1824 |
case _adapter_ref_to_prim: |
|
1825 |
if (src != T_OBJECT || !is_java_primitive(dest) |
|
1826 |
|| argument() != Klass::cast(SystemDictionary::box_klass(dest))->java_mirror()) { |
|
1827 |
err = "adapter requires primitive dest conversion subfield"; break; |
|
1828 |
} |
|
1829 |
break; |
|
1830 |
case _adapter_prim_to_ref: |
|
1831 |
if (!is_java_primitive(src) || dest != T_OBJECT |
|
1832 |
|| argument() != Klass::cast(SystemDictionary::box_klass(src))->java_mirror()) { |
|
1833 |
err = "adapter requires primitive src conversion subfield"; break; |
|
1834 |
} |
|
1835 |
break; |
|
1836 |
case _adapter_swap_args: |
|
1837 |
case _adapter_rot_args: |
|
1838 |
{ |
|
1839 |
if (!src || src != dest) { |
|
1840 |
err = "adapter requires src/dest conversion subfields for swap"; break; |
|
1841 |
} |
|
1842 |
int swap_size = type2size[src]; |
|
8676
9098d4e927e1
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8675
diff
changeset
|
1843 |
oop src_mtype = java_lang_invoke_AdapterMethodHandle::type(mh()); |
9098d4e927e1
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8675
diff
changeset
|
1844 |
oop dest_mtype = java_lang_invoke_AdapterMethodHandle::type(target()); |
9098d4e927e1
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8675
diff
changeset
|
1845 |
int slot_limit = java_lang_invoke_AdapterMethodHandle::vmslots(target()); |
2534 | 1846 |
int src_slot = argslot; |
1847 |
int dest_slot = vminfo; |
|
1848 |
bool rotate_up = (src_slot > dest_slot); // upward rotation |
|
1849 |
int src_arg = argnum; |
|
1850 |
int dest_arg = argument_slot_to_argnum(dest_mtype, dest_slot); |
|
1851 |
verify_vmargslot(mh, dest_arg, dest_slot, CHECK); |
|
1852 |
if (!(dest_slot >= src_slot + swap_size) && |
|
1853 |
!(src_slot >= dest_slot + swap_size)) { |
|
1854 |
err = "source, destination slots must be distinct"; |
|
1855 |
} else if (ek == _adapter_swap_args && !(src_slot > dest_slot)) { |
|
1856 |
err = "source of swap must be deeper in stack"; |
|
1857 |
} else if (ek == _adapter_swap_args) { |
|
8676
9098d4e927e1
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8675
diff
changeset
|
1858 |
err = check_argument_type_change(java_lang_invoke_MethodType::ptype(src_mtype, dest_arg), |
9098d4e927e1
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8675
diff
changeset
|
1859 |
java_lang_invoke_MethodType::ptype(dest_mtype, src_arg), |
2534 | 1860 |
dest_arg); |
1861 |
} else if (ek == _adapter_rot_args) { |
|
1862 |
if (rotate_up) { |
|
1863 |
assert((src_slot > dest_slot) && (src_arg < dest_arg), ""); |
|
1864 |
// rotate up: [dest_slot..src_slot-ss] --> [dest_slot+ss..src_slot] |
|
1865 |
// that is: [src_arg+1..dest_arg] --> [src_arg..dest_arg-1] |
|
1866 |
for (int i = src_arg+1; i <= dest_arg && err == NULL; i++) { |
|
8676
9098d4e927e1
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8675
diff
changeset
|
1867 |
err = check_argument_type_change(java_lang_invoke_MethodType::ptype(src_mtype, i), |
9098d4e927e1
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8675
diff
changeset
|
1868 |
java_lang_invoke_MethodType::ptype(dest_mtype, i-1), |
2534 | 1869 |
i); |
1870 |
} |
|
1871 |
} else { // rotate down |
|
1872 |
assert((src_slot < dest_slot) && (src_arg > dest_arg), ""); |
|
1873 |
// rotate down: [src_slot+ss..dest_slot] --> [src_slot..dest_slot-ss] |
|
1874 |
// that is: [dest_arg..src_arg-1] --> [dst_arg+1..src_arg] |
|
1875 |
for (int i = dest_arg; i <= src_arg-1 && err == NULL; i++) { |
|
8676
9098d4e927e1
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8675
diff
changeset
|
1876 |
err = check_argument_type_change(java_lang_invoke_MethodType::ptype(src_mtype, i), |
9098d4e927e1
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8675
diff
changeset
|
1877 |
java_lang_invoke_MethodType::ptype(dest_mtype, i+1), |
2534 | 1878 |
i); |
1879 |
} |
|
1880 |
} |
|
1881 |
} |
|
1882 |
if (err == NULL) |
|
8676
9098d4e927e1
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8675
diff
changeset
|
1883 |
err = check_argument_type_change(java_lang_invoke_MethodType::ptype(src_mtype, src_arg), |
9098d4e927e1
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8675
diff
changeset
|
1884 |
java_lang_invoke_MethodType::ptype(dest_mtype, dest_arg), |
2534 | 1885 |
src_arg); |
1886 |
} |
|
1887 |
break; |
|
1888 |
case _adapter_collect_args: |
|
1889 |
case _adapter_spread_args: |
|
1890 |
{ |
|
1891 |
BasicType coll_type = (ek == _adapter_collect_args) ? dest : src; |
|
1892 |
BasicType elem_type = (ek == _adapter_collect_args) ? src : dest; |
|
1893 |
if (coll_type != T_OBJECT || elem_type != T_OBJECT) { |
|
1894 |
err = "adapter requires src/dest subfields"; break; |
|
1895 |
// later: |
|
1896 |
// - consider making coll be a primitive array |
|
1897 |
// - consider making coll be a heterogeneous collection |
|
1898 |
} |
|
1899 |
} |
|
1900 |
break; |
|
1901 |
default: |
|
1902 |
if (src != 0 || dest != 0) { |
|
1903 |
err = "adapter has spurious src/dest conversion subfields"; break; |
|
1904 |
} |
|
1905 |
break; |
|
1906 |
} |
|
1907 |
} |
|
1908 |
||
1909 |
if (err == NULL) { |
|
1910 |
// Check the stack_move subfield. |
|
1911 |
// It must always report the net change in stack size, positive or negative. |
|
1912 |
int slots_pushed = stack_move / stack_move_unit(); |
|
1913 |
switch (ek) { |
|
1914 |
case _adapter_prim_to_prim: |
|
1915 |
case _adapter_ref_to_prim: |
|
1916 |
case _adapter_prim_to_ref: |
|
1917 |
if (slots_pushed != type2size[dest] - type2size[src]) { |
|
1918 |
err = "wrong stack motion for primitive conversion"; |
|
1919 |
} |
|
1920 |
break; |
|
1921 |
case _adapter_dup_args: |
|
1922 |
if (slots_pushed <= 0) { |
|
1923 |
err = "adapter requires conversion subfield slots_pushed > 0"; |
|
1924 |
} |
|
1925 |
break; |
|
1926 |
case _adapter_drop_args: |
|
1927 |
if (slots_pushed >= 0) { |
|
1928 |
err = "adapter requires conversion subfield slots_pushed < 0"; |
|
1929 |
} |
|
1930 |
break; |
|
1931 |
case _adapter_collect_args: |
|
1932 |
if (slots_pushed > 1) { |
|
1933 |
err = "adapter requires conversion subfield slots_pushed <= 1"; |
|
1934 |
} |
|
1935 |
break; |
|
1936 |
case _adapter_spread_args: |
|
1937 |
if (slots_pushed < -1) { |
|
1938 |
err = "adapter requires conversion subfield slots_pushed >= -1"; |
|
1939 |
} |
|
1940 |
break; |
|
1941 |
default: |
|
1942 |
if (stack_move != 0) { |
|
1943 |
err = "adapter has spurious stack_move conversion subfield"; |
|
1944 |
} |
|
1945 |
break; |
|
1946 |
} |
|
1947 |
if (err == NULL && stack_move != slots_pushed * stack_move_unit()) { |
|
1948 |
err = "stack_move conversion subfield must be multiple of stack_move_unit"; |
|
1949 |
} |
|
1950 |
} |
|
1951 |
||
1952 |
if (err == NULL) { |
|
1953 |
// Make sure this adapter does not push too deeply. |
|
1954 |
int slots_pushed = stack_move / stack_move_unit(); |
|
8676
9098d4e927e1
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8675
diff
changeset
|
1955 |
int this_vmslots = java_lang_invoke_MethodHandle::vmslots(mh()); |
9098d4e927e1
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8675
diff
changeset
|
1956 |
int target_vmslots = java_lang_invoke_MethodHandle::vmslots(target()); |
4094
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
1957 |
if (slots_pushed != (target_vmslots - this_vmslots)) { |
2534 | 1958 |
err = "stack_move inconsistent with previous and current MethodType vmslots"; |
1959 |
} else if (slots_pushed > 0) { |
|
1960 |
// verify stack_move against MethodHandlePushLimit |
|
4094
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
1961 |
int target_pushes = decode_MethodHandle_stack_pushes(target()); |
2534 | 1962 |
// do not blow the stack; use a Java-based adapter if this limit is exceeded |
4094
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
1963 |
if (slots_pushed + target_pushes > MethodHandlePushLimit) { |
2534 | 1964 |
err = "adapter pushes too many parameters"; |
1965 |
} |
|
1966 |
} |
|
1967 |
||
1968 |
// While we're at it, check that the stack motion decoder works: |
|
4094
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
1969 |
DEBUG_ONLY(int target_pushes = decode_MethodHandle_stack_pushes(target())); |
2534 | 1970 |
DEBUG_ONLY(int this_pushes = decode_MethodHandle_stack_pushes(mh())); |
4094
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
1971 |
assert(this_pushes == slots_pushed + target_pushes, "AMH stack motion must be correct"); |
2534 | 1972 |
} |
1973 |
||
1974 |
if (err == NULL && vminfo != 0) { |
|
1975 |
switch (ek) { |
|
1976 |
case _adapter_swap_args: |
|
1977 |
case _adapter_rot_args: |
|
1978 |
break; // OK |
|
1979 |
default: |
|
1980 |
err = "vminfo subfield is reserved to the JVM"; |
|
1981 |
} |
|
1982 |
} |
|
1983 |
||
1984 |
// Do additional ad hoc checks. |
|
1985 |
if (err == NULL) { |
|
1986 |
switch (ek) { |
|
1987 |
case _adapter_retype_only: |
|
4094
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
1988 |
err = check_method_type_passthrough(src_mtype(), dst_mtype(), false); |
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
1989 |
break; |
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
1990 |
|
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
1991 |
case _adapter_retype_raw: |
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
1992 |
err = check_method_type_passthrough(src_mtype(), dst_mtype(), true); |
2534 | 1993 |
break; |
1994 |
||
1995 |
case _adapter_check_cast: |
|
1996 |
{ |
|
1997 |
// The actual value being checked must be a reference: |
|
8676
9098d4e927e1
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8675
diff
changeset
|
1998 |
err = check_argument_type_change(java_lang_invoke_MethodType::ptype(src_mtype(), argnum), |
2534 | 1999 |
object_java_mirror(), argnum); |
2000 |
if (err != NULL) break; |
|
2001 |
||
2002 |
// The output of the cast must fit with the destination argument: |
|
2003 |
Handle cast_class = argument; |
|
2004 |
err = check_method_type_conversion(src_mtype(), |
|
2005 |
argnum, cast_class(), |
|
2006 |
dst_mtype()); |
|
2007 |
} |
|
2008 |
break; |
|
2009 |
||
2010 |
// %%% TO DO: continue in remaining cases to verify src/dst_mtype if VerifyMethodHandles |
|
2011 |
} |
|
2012 |
} |
|
2013 |
||
2014 |
if (err != NULL) { |
|
2015 |
throw_InternalError_for_bad_conversion(conversion, err, THREAD); |
|
2016 |
return; |
|
2017 |
} |
|
2018 |
||
2019 |
} |
|
2020 |
||
2021 |
void MethodHandles::init_AdapterMethodHandle(Handle mh, Handle target, int argnum, TRAPS) { |
|
8676
9098d4e927e1
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8675
diff
changeset
|
2022 |
oop argument = java_lang_invoke_AdapterMethodHandle::argument(mh()); |
9098d4e927e1
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8675
diff
changeset
|
2023 |
int argslot = java_lang_invoke_AdapterMethodHandle::vmargslot(mh()); |
9098d4e927e1
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8675
diff
changeset
|
2024 |
jint conversion = java_lang_invoke_AdapterMethodHandle::conversion(mh()); |
2534 | 2025 |
jint conv_op = adapter_conversion_op(conversion); |
2026 |
||
2027 |
// adjust the adapter code to the internal EntryKind enumeration: |
|
2028 |
EntryKind ek_orig = adapter_entry_kind(conv_op); |
|
2029 |
EntryKind ek_opt = ek_orig; // may be optimized |
|
2030 |
||
2031 |
// Finalize the vmtarget field (Java initialized it to null). |
|
8676
9098d4e927e1
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8675
diff
changeset
|
2032 |
if (!java_lang_invoke_MethodHandle::is_instance(target())) { |
2534 | 2033 |
throw_InternalError_for_bad_conversion(conversion, "bad target", THREAD); |
2034 |
return; |
|
2035 |
} |
|
8676
9098d4e927e1
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8675
diff
changeset
|
2036 |
java_lang_invoke_AdapterMethodHandle::set_vmtarget(mh(), target()); |
2534 | 2037 |
|
2038 |
if (VerifyMethodHandles) { |
|
2039 |
verify_AdapterMethodHandle(mh, argnum, CHECK); |
|
2040 |
} |
|
2041 |
||
2042 |
int stack_move = adapter_conversion_stack_move(conversion); |
|
2043 |
BasicType src = adapter_conversion_src_type(conversion); |
|
2044 |
BasicType dest = adapter_conversion_dest_type(conversion); |
|
2045 |
int vminfo = adapter_conversion_vminfo(conversion); // should be zero |
|
2046 |
||
2047 |
const char* err = NULL; |
|
2048 |
||
2049 |
// Now it's time to finish the case analysis and pick a MethodHandleEntry. |
|
2050 |
switch (ek_orig) { |
|
2051 |
case _adapter_retype_only: |
|
4094
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
2052 |
case _adapter_retype_raw: |
2534 | 2053 |
case _adapter_check_cast: |
2054 |
case _adapter_dup_args: |
|
2055 |
case _adapter_drop_args: |
|
2056 |
// these work fine via general case code |
|
2057 |
break; |
|
2058 |
||
2059 |
case _adapter_prim_to_prim: |
|
2060 |
{ |
|
2061 |
// Non-subword cases are {int,float,long,double} -> {int,float,long,double}. |
|
2062 |
// And, the {float,double} -> {int,long} cases must be handled by Java. |
|
2063 |
switch (type2size[src] *4+ type2size[dest]) { |
|
2064 |
case 1 *4+ 1: |
|
2065 |
assert(src == T_INT || is_subword_type(src), "source is not float"); |
|
2066 |
// Subword-related cases are int -> {boolean,byte,char,short}. |
|
2067 |
ek_opt = _adapter_opt_i2i; |
|
6775
633e4ce534ac
6987555: JSR 292 unboxing to a boolean value fails on big-endian SPARC
twisti
parents:
6418
diff
changeset
|
2068 |
vminfo = adapter_prim_to_prim_subword_vminfo(dest); |
2534 | 2069 |
break; |
2070 |
case 2 *4+ 1: |
|
2071 |
if (src == T_LONG && (dest == T_INT || is_subword_type(dest))) { |
|
2072 |
ek_opt = _adapter_opt_l2i; |
|
6775
633e4ce534ac
6987555: JSR 292 unboxing to a boolean value fails on big-endian SPARC
twisti
parents:
6418
diff
changeset
|
2073 |
vminfo = adapter_prim_to_prim_subword_vminfo(dest); |
2534 | 2074 |
} else if (src == T_DOUBLE && dest == T_FLOAT) { |
2075 |
ek_opt = _adapter_opt_d2f; |
|
2076 |
} else { |
|
2077 |
assert(false, ""); |
|
2078 |
} |
|
2079 |
break; |
|
2080 |
case 1 *4+ 2: |
|
2081 |
if (src == T_INT && dest == T_LONG) { |
|
2082 |
ek_opt = _adapter_opt_i2l; |
|
2083 |
} else if (src == T_FLOAT && dest == T_DOUBLE) { |
|
2084 |
ek_opt = _adapter_opt_f2d; |
|
2085 |
} else { |
|
2086 |
assert(false, ""); |
|
2087 |
} |
|
2088 |
break; |
|
2089 |
default: |
|
2090 |
assert(false, ""); |
|
2091 |
break; |
|
2092 |
} |
|
2093 |
} |
|
2094 |
break; |
|
2095 |
||
2096 |
case _adapter_ref_to_prim: |
|
2097 |
{ |
|
2098 |
switch (type2size[dest]) { |
|
2099 |
case 1: |
|
2100 |
ek_opt = _adapter_opt_unboxi; |
|
6775
633e4ce534ac
6987555: JSR 292 unboxing to a boolean value fails on big-endian SPARC
twisti
parents:
6418
diff
changeset
|
2101 |
vminfo = adapter_unbox_subword_vminfo(dest); |
2534 | 2102 |
break; |
2103 |
case 2: |
|
2104 |
ek_opt = _adapter_opt_unboxl; |
|
2105 |
break; |
|
2106 |
default: |
|
2107 |
assert(false, ""); |
|
2108 |
break; |
|
2109 |
} |
|
2110 |
} |
|
2111 |
break; |
|
2112 |
||
2113 |
case _adapter_prim_to_ref: |
|
2114 |
goto throw_not_impl; // allocates, hence could block |
|
2115 |
||
2116 |
case _adapter_swap_args: |
|
2117 |
case _adapter_rot_args: |
|
2118 |
{ |
|
2119 |
int swap_slots = type2size[src]; |
|
8676
9098d4e927e1
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8675
diff
changeset
|
2120 |
int slot_limit = java_lang_invoke_AdapterMethodHandle::vmslots(mh()); |
2534 | 2121 |
int src_slot = argslot; |
2122 |
int dest_slot = vminfo; |
|
2123 |
int rotate = (ek_orig == _adapter_swap_args) ? 0 : (src_slot > dest_slot) ? 1 : -1; |
|
2124 |
switch (swap_slots) { |
|
2125 |
case 1: |
|
2126 |
ek_opt = (!rotate ? _adapter_opt_swap_1 : |
|
2127 |
rotate > 0 ? _adapter_opt_rot_1_up : _adapter_opt_rot_1_down); |
|
2128 |
break; |
|
2129 |
case 2: |
|
2130 |
ek_opt = (!rotate ? _adapter_opt_swap_2 : |
|
2131 |
rotate > 0 ? _adapter_opt_rot_2_up : _adapter_opt_rot_2_down); |
|
2132 |
break; |
|
2133 |
default: |
|
2134 |
assert(false, ""); |
|
2135 |
break; |
|
2136 |
} |
|
2137 |
} |
|
2138 |
break; |
|
2139 |
||
2140 |
case _adapter_collect_args: |
|
2141 |
goto throw_not_impl; // allocates, hence could block |
|
2142 |
||
2143 |
case _adapter_spread_args: |
|
2144 |
{ |
|
2145 |
// vminfo will be the required length of the array |
|
2146 |
int slots_pushed = stack_move / stack_move_unit(); |
|
2147 |
int array_size = slots_pushed + 1; |
|
2148 |
assert(array_size >= 0, ""); |
|
2149 |
vminfo = array_size; |
|
2150 |
switch (array_size) { |
|
2151 |
case 0: ek_opt = _adapter_opt_spread_0; break; |
|
2152 |
case 1: ek_opt = _adapter_opt_spread_1; break; |
|
2153 |
default: ek_opt = _adapter_opt_spread_more; break; |
|
2154 |
} |
|
2155 |
if ((vminfo & CONV_VMINFO_MASK) != vminfo) |
|
2156 |
goto throw_not_impl; // overflow |
|
2157 |
} |
|
2158 |
break; |
|
2159 |
||
2160 |
case _adapter_flyby: |
|
2161 |
case _adapter_ricochet: |
|
2162 |
goto throw_not_impl; // runs Java code, hence could block |
|
2163 |
||
2164 |
default: |
|
2165 |
// should have failed much earlier; must be a missing case here |
|
2166 |
assert(false, "incomplete switch"); |
|
2167 |
// and fall through: |
|
2168 |
||
2169 |
throw_not_impl: |
|
2170 |
// FIXME: these adapters are NYI |
|
2171 |
err = "adapter not yet implemented in the JVM"; |
|
2172 |
break; |
|
2173 |
} |
|
2174 |
||
2175 |
if (err != NULL) { |
|
2176 |
throw_InternalError_for_bad_conversion(conversion, err, THREAD); |
|
2177 |
return; |
|
2178 |
} |
|
2179 |
||
2180 |
// Rebuild the conversion value; maybe parts of it were changed. |
|
2181 |
jint new_conversion = adapter_conversion(conv_op, src, dest, stack_move, vminfo); |
|
2182 |
||
2183 |
// Finalize the conversion field. (Note that it is final to Java code.) |
|
8676
9098d4e927e1
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8675
diff
changeset
|
2184 |
java_lang_invoke_AdapterMethodHandle::set_conversion(mh(), new_conversion); |
2534 | 2185 |
|
2186 |
// Done! |
|
8676
9098d4e927e1
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8675
diff
changeset
|
2187 |
java_lang_invoke_MethodHandle::set_vmentry(mh(), entry(ek_opt)); |
2534 | 2188 |
|
2189 |
// There should be enough memory barriers on exit from native methods |
|
2190 |
// to ensure that the MH is fully initialized to all threads before |
|
2191 |
// Java code can publish it in global data structures. |
|
2192 |
} |
|
2193 |
||
2194 |
// |
|
8676
9098d4e927e1
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8675
diff
changeset
|
2195 |
// Here are the native methods on sun.invoke.MethodHandleImpl. |
2534 | 2196 |
// They are the private interface between this JVM and the HotSpot-specific |
2197 |
// Java code that implements JSR 292 method handles. |
|
2198 |
// |
|
2199 |
// Note: We use a JVM_ENTRY macro to define each of these, for this is the way |
|
2200 |
// that intrinsic (non-JNI) native methods are defined in HotSpot. |
|
2201 |
// |
|
2202 |
||
2203 |
// direct method handles for invokestatic or invokespecial |
|
2204 |
// void init(DirectMethodHandle self, MemberName ref, boolean doDispatch, Class<?> caller); |
|
8676
9098d4e927e1
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8675
diff
changeset
|
2205 |
JVM_ENTRY(void, MHN_init_DMH(JNIEnv *env, jobject igcls, jobject mh_jh, |
2534 | 2206 |
jobject target_jh, jboolean do_dispatch, jobject caller_jh)) { |
2207 |
ResourceMark rm; // for error messages |
|
2208 |
||
2209 |
// This is the guy we are initializing: |
|
2210 |
if (mh_jh == NULL) { THROW(vmSymbols::java_lang_InternalError()); } |
|
2211 |
Handle mh(THREAD, JNIHandles::resolve_non_null(mh_jh)); |
|
2212 |
||
2213 |
// Early returns out of this method leave the DMH in an unfinished state. |
|
8676
9098d4e927e1
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8675
diff
changeset
|
2214 |
assert(java_lang_invoke_MethodHandle::vmentry(mh()) == NULL, "must be safely null"); |
2534 | 2215 |
|
2216 |
// which method are we really talking about? |
|
2217 |
if (target_jh == NULL) { THROW(vmSymbols::java_lang_InternalError()); } |
|
2218 |
oop target_oop = JNIHandles::resolve_non_null(target_jh); |
|
8676
9098d4e927e1
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8675
diff
changeset
|
2219 |
if (java_lang_invoke_MemberName::is_instance(target_oop) && |
9098d4e927e1
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8675
diff
changeset
|
2220 |
java_lang_invoke_MemberName::vmindex(target_oop) == VM_INDEX_UNINITIALIZED) { |
2534 | 2221 |
Handle mname(THREAD, target_oop); |
2222 |
MethodHandles::resolve_MemberName(mname, CHECK); |
|
2223 |
target_oop = mname(); // in case of GC |
|
2224 |
} |
|
2225 |
||
2226 |
int decode_flags = 0; klassOop receiver_limit = NULL; |
|
2227 |
methodHandle m(THREAD, |
|
2228 |
MethodHandles::decode_method(target_oop, |
|
2229 |
receiver_limit, decode_flags)); |
|
2230 |
if (m.is_null()) { THROW_MSG(vmSymbols::java_lang_InternalError(), "no such method"); } |
|
2231 |
||
2232 |
// The trusted Java code that calls this method should already have performed |
|
2233 |
// access checks on behalf of the given caller. But, we can verify this. |
|
2234 |
if (VerifyMethodHandles && caller_jh != NULL) { |
|
2235 |
KlassHandle caller(THREAD, java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(caller_jh))); |
|
2236 |
// If this were a bytecode, the first access check would be against |
|
2237 |
// the "reference class" mentioned in the CONSTANT_Methodref. |
|
5420
586d3988e72b
6939134: JSR 292 adjustments to method handle invocation
jrose
parents:
5050
diff
changeset
|
2238 |
// We don't know at this point which class that was, and if we |
586d3988e72b
6939134: JSR 292 adjustments to method handle invocation
jrose
parents:
5050
diff
changeset
|
2239 |
// check against m.method_holder we might get the wrong answer. |
586d3988e72b
6939134: JSR 292 adjustments to method handle invocation
jrose
parents:
5050
diff
changeset
|
2240 |
// So we just make sure to handle this check when the resolution |
586d3988e72b
6939134: JSR 292 adjustments to method handle invocation
jrose
parents:
5050
diff
changeset
|
2241 |
// happens, when we call resolve_MemberName. |
586d3988e72b
6939134: JSR 292 adjustments to method handle invocation
jrose
parents:
5050
diff
changeset
|
2242 |
// |
586d3988e72b
6939134: JSR 292 adjustments to method handle invocation
jrose
parents:
5050
diff
changeset
|
2243 |
// (A public class can inherit public members from private supers, |
586d3988e72b
6939134: JSR 292 adjustments to method handle invocation
jrose
parents:
5050
diff
changeset
|
2244 |
// and it would be wrong to check access against the private super |
586d3988e72b
6939134: JSR 292 adjustments to method handle invocation
jrose
parents:
5050
diff
changeset
|
2245 |
// if the original symbolic reference was against the public class.) |
586d3988e72b
6939134: JSR 292 adjustments to method handle invocation
jrose
parents:
5050
diff
changeset
|
2246 |
// |
2534 | 2247 |
// If there were a bytecode, the next step would be to lookup the method |
2248 |
// in the reference class, then then check the method's access bits. |
|
2249 |
// Emulate LinkResolver::check_method_accessability. |
|
2250 |
klassOop resolved_klass = m->method_holder(); |
|
2251 |
if (!Reflection::verify_field_access(caller->as_klassOop(), |
|
5420
586d3988e72b
6939134: JSR 292 adjustments to method handle invocation
jrose
parents:
5050
diff
changeset
|
2252 |
resolved_klass, resolved_klass, |
2534 | 2253 |
m->access_flags(), |
2254 |
true)) { |
|
2255 |
// %%% following cutout belongs in Reflection::verify_field_access? |
|
2256 |
bool same_pm = Reflection::is_same_package_member(caller->as_klassOop(), |
|
5420
586d3988e72b
6939134: JSR 292 adjustments to method handle invocation
jrose
parents:
5050
diff
changeset
|
2257 |
resolved_klass, THREAD); |
2534 | 2258 |
if (!same_pm) { |
2259 |
THROW_MSG(vmSymbols::java_lang_InternalError(), m->name_and_sig_as_C_string()); |
|
2260 |
} |
|
2261 |
} |
|
2262 |
} |
|
2263 |
||
2264 |
MethodHandles::init_DirectMethodHandle(mh, m, (do_dispatch != JNI_FALSE), CHECK); |
|
2265 |
} |
|
2266 |
JVM_END |
|
2267 |
||
2268 |
// bound method handles |
|
8676
9098d4e927e1
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8675
diff
changeset
|
2269 |
JVM_ENTRY(void, MHN_init_BMH(JNIEnv *env, jobject igcls, jobject mh_jh, |
2534 | 2270 |
jobject target_jh, int argnum)) { |
2271 |
ResourceMark rm; // for error messages |
|
2272 |
||
2273 |
// This is the guy we are initializing: |
|
2274 |
if (mh_jh == NULL) { THROW(vmSymbols::java_lang_InternalError()); } |
|
2275 |
Handle mh(THREAD, JNIHandles::resolve_non_null(mh_jh)); |
|
2276 |
||
2277 |
// Early returns out of this method leave the BMH in an unfinished state. |
|
8676
9098d4e927e1
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8675
diff
changeset
|
2278 |
assert(java_lang_invoke_MethodHandle::vmentry(mh()) == NULL, "must be safely null"); |
2534 | 2279 |
|
2280 |
if (target_jh == NULL) { THROW(vmSymbols::java_lang_InternalError()); } |
|
2281 |
Handle target(THREAD, JNIHandles::resolve_non_null(target_jh)); |
|
2282 |
||
8676
9098d4e927e1
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8675
diff
changeset
|
2283 |
if (!java_lang_invoke_MethodHandle::is_instance(target())) { |
2534 | 2284 |
// Target object is a reflective method. (%%% Do we need this alternate path?) |
2285 |
Untested("init_BMH of non-MH"); |
|
2286 |
if (argnum != 0) { THROW(vmSymbols::java_lang_InternalError()); } |
|
2287 |
int decode_flags = 0; klassOop receiver_limit_oop = NULL; |
|
2288 |
methodHandle m(THREAD, |
|
2289 |
MethodHandles::decode_method(target(), |
|
2290 |
receiver_limit_oop, |
|
2291 |
decode_flags)); |
|
2292 |
KlassHandle receiver_limit(THREAD, receiver_limit_oop); |
|
2293 |
MethodHandles::init_BoundMethodHandle_with_receiver(mh, m, |
|
2294 |
receiver_limit, |
|
2295 |
decode_flags, |
|
2296 |
CHECK); |
|
2297 |
return; |
|
2298 |
} |
|
2299 |
||
2300 |
// Build a BMH on top of a DMH or another BMH: |
|
2301 |
MethodHandles::init_BoundMethodHandle(mh, target, argnum, CHECK); |
|
2302 |
} |
|
2303 |
JVM_END |
|
2304 |
||
2305 |
// adapter method handles |
|
8676
9098d4e927e1
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8675
diff
changeset
|
2306 |
JVM_ENTRY(void, MHN_init_AMH(JNIEnv *env, jobject igcls, jobject mh_jh, |
2534 | 2307 |
jobject target_jh, int argnum)) { |
2308 |
// This is the guy we are initializing: |
|
2309 |
if (mh_jh == NULL || target_jh == NULL) { |
|
2310 |
THROW(vmSymbols::java_lang_InternalError()); |
|
2311 |
} |
|
2312 |
Handle mh(THREAD, JNIHandles::resolve_non_null(mh_jh)); |
|
2313 |
Handle target(THREAD, JNIHandles::resolve_non_null(target_jh)); |
|
2314 |
||
2315 |
// Early returns out of this method leave the AMH in an unfinished state. |
|
8676
9098d4e927e1
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8675
diff
changeset
|
2316 |
assert(java_lang_invoke_MethodHandle::vmentry(mh()) == NULL, "must be safely null"); |
2534 | 2317 |
|
2318 |
MethodHandles::init_AdapterMethodHandle(mh, target, argnum, CHECK); |
|
2319 |
} |
|
2320 |
JVM_END |
|
2321 |
||
2322 |
// method type forms |
|
8676
9098d4e927e1
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8675
diff
changeset
|
2323 |
JVM_ENTRY(void, MHN_init_MT(JNIEnv *env, jobject igcls, jobject erased_jh)) { |
2534 | 2324 |
if (erased_jh == NULL) return; |
2325 |
if (TraceMethodHandles) { |
|
2326 |
tty->print("creating MethodType form "); |
|
2327 |
if (WizardMode || Verbose) { // Warning: this calls Java code on the MH! |
|
2328 |
// call Object.toString() |
|
8076
96d498ec7ae1
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
7887
diff
changeset
|
2329 |
Symbol* name = vmSymbols::toString_name(); |
96d498ec7ae1
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
7887
diff
changeset
|
2330 |
Symbol* sig = vmSymbols::void_string_signature(); |
2534 | 2331 |
JavaCallArguments args(Handle(THREAD, JNIHandles::resolve_non_null(erased_jh))); |
2332 |
JavaValue result(T_OBJECT); |
|
4571 | 2333 |
JavaCalls::call_virtual(&result, SystemDictionary::Object_klass(), name, sig, |
2534 | 2334 |
&args, CHECK); |
2335 |
Handle str(THREAD, (oop)result.get_jobject()); |
|
2336 |
java_lang_String::print(str, tty); |
|
2337 |
} |
|
2338 |
tty->cr(); |
|
2339 |
} |
|
2340 |
} |
|
2341 |
JVM_END |
|
2342 |
||
2343 |
// debugging and reflection |
|
8676
9098d4e927e1
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8675
diff
changeset
|
2344 |
JVM_ENTRY(jobject, MHN_getTarget(JNIEnv *env, jobject igcls, jobject mh_jh, jint format)) { |
2534 | 2345 |
Handle mh(THREAD, JNIHandles::resolve(mh_jh)); |
8676
9098d4e927e1
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8675
diff
changeset
|
2346 |
if (!java_lang_invoke_MethodHandle::is_instance(mh())) { |
2534 | 2347 |
THROW_NULL(vmSymbols::java_lang_IllegalArgumentException()); |
2348 |
} |
|
2349 |
oop target = MethodHandles::encode_target(mh, format, CHECK_NULL); |
|
2350 |
return JNIHandles::make_local(THREAD, target); |
|
2351 |
} |
|
2352 |
JVM_END |
|
2353 |
||
8676
9098d4e927e1
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8675
diff
changeset
|
2354 |
JVM_ENTRY(jint, MHN_getConstant(JNIEnv *env, jobject igcls, jint which)) { |
2534 | 2355 |
switch (which) { |
2356 |
case MethodHandles::GC_JVM_PUSH_LIMIT: |
|
2357 |
guarantee(MethodHandlePushLimit >= 2 && MethodHandlePushLimit <= 0xFF, |
|
2358 |
"MethodHandlePushLimit parameter must be in valid range"); |
|
2359 |
return MethodHandlePushLimit; |
|
4094
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
2360 |
case MethodHandles::GC_JVM_STACK_MOVE_UNIT: |
2534 | 2361 |
// return number of words per slot, signed according to stack direction |
2362 |
return MethodHandles::stack_move_unit(); |
|
5420
586d3988e72b
6939134: JSR 292 adjustments to method handle invocation
jrose
parents:
5050
diff
changeset
|
2363 |
case MethodHandles::GC_CONV_OP_IMPLEMENTED_MASK: |
586d3988e72b
6939134: JSR 292 adjustments to method handle invocation
jrose
parents:
5050
diff
changeset
|
2364 |
return MethodHandles::adapter_conversion_ops_supported_mask(); |
2534 | 2365 |
} |
2366 |
return 0; |
|
2367 |
} |
|
2368 |
JVM_END |
|
2369 |
||
2370 |
#ifndef PRODUCT |
|
2371 |
#define EACH_NAMED_CON(template) \ |
|
2372 |
template(MethodHandles,GC_JVM_PUSH_LIMIT) \ |
|
4094
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
2373 |
template(MethodHandles,GC_JVM_STACK_MOVE_UNIT) \ |
2534 | 2374 |
template(MethodHandles,ETF_HANDLE_OR_METHOD_NAME) \ |
2375 |
template(MethodHandles,ETF_DIRECT_HANDLE) \ |
|
2376 |
template(MethodHandles,ETF_METHOD_NAME) \ |
|
2377 |
template(MethodHandles,ETF_REFLECT_METHOD) \ |
|
8676
9098d4e927e1
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8675
diff
changeset
|
2378 |
template(java_lang_invoke_MemberName,MN_IS_METHOD) \ |
9098d4e927e1
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8675
diff
changeset
|
2379 |
template(java_lang_invoke_MemberName,MN_IS_CONSTRUCTOR) \ |
9098d4e927e1
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8675
diff
changeset
|
2380 |
template(java_lang_invoke_MemberName,MN_IS_FIELD) \ |
9098d4e927e1
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8675
diff
changeset
|
2381 |
template(java_lang_invoke_MemberName,MN_IS_TYPE) \ |
9098d4e927e1
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8675
diff
changeset
|
2382 |
template(java_lang_invoke_MemberName,MN_SEARCH_SUPERCLASSES) \ |
9098d4e927e1
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8675
diff
changeset
|
2383 |
template(java_lang_invoke_MemberName,MN_SEARCH_INTERFACES) \ |
9098d4e927e1
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8675
diff
changeset
|
2384 |
template(java_lang_invoke_MemberName,VM_INDEX_UNINITIALIZED) \ |
9098d4e927e1
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8675
diff
changeset
|
2385 |
template(java_lang_invoke_AdapterMethodHandle,OP_RETYPE_ONLY) \ |
9098d4e927e1
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8675
diff
changeset
|
2386 |
template(java_lang_invoke_AdapterMethodHandle,OP_RETYPE_RAW) \ |
9098d4e927e1
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8675
diff
changeset
|
2387 |
template(java_lang_invoke_AdapterMethodHandle,OP_CHECK_CAST) \ |
9098d4e927e1
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8675
diff
changeset
|
2388 |
template(java_lang_invoke_AdapterMethodHandle,OP_PRIM_TO_PRIM) \ |
9098d4e927e1
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8675
diff
changeset
|
2389 |
template(java_lang_invoke_AdapterMethodHandle,OP_REF_TO_PRIM) \ |
9098d4e927e1
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8675
diff
changeset
|
2390 |
template(java_lang_invoke_AdapterMethodHandle,OP_PRIM_TO_REF) \ |
9098d4e927e1
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8675
diff
changeset
|
2391 |
template(java_lang_invoke_AdapterMethodHandle,OP_SWAP_ARGS) \ |
9098d4e927e1
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8675
diff
changeset
|
2392 |
template(java_lang_invoke_AdapterMethodHandle,OP_ROT_ARGS) \ |
9098d4e927e1
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8675
diff
changeset
|
2393 |
template(java_lang_invoke_AdapterMethodHandle,OP_DUP_ARGS) \ |
9098d4e927e1
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8675
diff
changeset
|
2394 |
template(java_lang_invoke_AdapterMethodHandle,OP_DROP_ARGS) \ |
9098d4e927e1
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8675
diff
changeset
|
2395 |
template(java_lang_invoke_AdapterMethodHandle,OP_COLLECT_ARGS) \ |
9098d4e927e1
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8675
diff
changeset
|
2396 |
template(java_lang_invoke_AdapterMethodHandle,OP_SPREAD_ARGS) \ |
9098d4e927e1
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8675
diff
changeset
|
2397 |
template(java_lang_invoke_AdapterMethodHandle,OP_FLYBY) \ |
9098d4e927e1
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8675
diff
changeset
|
2398 |
template(java_lang_invoke_AdapterMethodHandle,OP_RICOCHET) \ |
9098d4e927e1
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8675
diff
changeset
|
2399 |
template(java_lang_invoke_AdapterMethodHandle,CONV_OP_LIMIT) \ |
9098d4e927e1
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8675
diff
changeset
|
2400 |
template(java_lang_invoke_AdapterMethodHandle,CONV_OP_MASK) \ |
9098d4e927e1
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8675
diff
changeset
|
2401 |
template(java_lang_invoke_AdapterMethodHandle,CONV_VMINFO_MASK) \ |
9098d4e927e1
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8675
diff
changeset
|
2402 |
template(java_lang_invoke_AdapterMethodHandle,CONV_VMINFO_SHIFT) \ |
9098d4e927e1
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8675
diff
changeset
|
2403 |
template(java_lang_invoke_AdapterMethodHandle,CONV_OP_SHIFT) \ |
9098d4e927e1
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8675
diff
changeset
|
2404 |
template(java_lang_invoke_AdapterMethodHandle,CONV_DEST_TYPE_SHIFT) \ |
9098d4e927e1
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8675
diff
changeset
|
2405 |
template(java_lang_invoke_AdapterMethodHandle,CONV_SRC_TYPE_SHIFT) \ |
9098d4e927e1
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8675
diff
changeset
|
2406 |
template(java_lang_invoke_AdapterMethodHandle,CONV_STACK_MOVE_SHIFT) \ |
9098d4e927e1
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8675
diff
changeset
|
2407 |
template(java_lang_invoke_AdapterMethodHandle,CONV_STACK_MOVE_MASK) \ |
2534 | 2408 |
/*end*/ |
2409 |
||
2410 |
#define ONE_PLUS(scope,value) 1+ |
|
2411 |
static const int con_value_count = EACH_NAMED_CON(ONE_PLUS) 0; |
|
2412 |
#define VALUE_COMMA(scope,value) scope::value, |
|
2413 |
static const int con_values[con_value_count+1] = { EACH_NAMED_CON(VALUE_COMMA) 0 }; |
|
2414 |
#define STRING_NULL(scope,value) #value "\0" |
|
2415 |
static const char con_names[] = { EACH_NAMED_CON(STRING_NULL) }; |
|
2416 |
||
2417 |
#undef ONE_PLUS |
|
2418 |
#undef VALUE_COMMA |
|
2419 |
#undef STRING_NULL |
|
2420 |
#undef EACH_NAMED_CON |
|
2421 |
#endif |
|
2422 |
||
8676
9098d4e927e1
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8675
diff
changeset
|
2423 |
JVM_ENTRY(jint, MHN_getNamedCon(JNIEnv *env, jobject igcls, jint which, jobjectArray box_jh)) { |
2534 | 2424 |
#ifndef PRODUCT |
2425 |
if (which >= 0 && which < con_value_count) { |
|
2426 |
int con = con_values[which]; |
|
2427 |
objArrayOop box = (objArrayOop) JNIHandles::resolve(box_jh); |
|
2428 |
if (box != NULL && box->klass() == Universe::objectArrayKlassObj() && box->length() > 0) { |
|
2429 |
const char* str = &con_names[0]; |
|
2430 |
for (int i = 0; i < which; i++) |
|
2431 |
str += strlen(str) + 1; // skip name and null |
|
2432 |
oop name = java_lang_String::create_oop_from_str(str, CHECK_0); |
|
2433 |
box->obj_at_put(0, name); |
|
2434 |
} |
|
2435 |
return con; |
|
2436 |
} |
|
2437 |
#endif |
|
2438 |
return 0; |
|
2439 |
} |
|
2440 |
JVM_END |
|
2441 |
||
2442 |
// void init(MemberName self, AccessibleObject ref) |
|
8676
9098d4e927e1
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8675
diff
changeset
|
2443 |
JVM_ENTRY(void, MHN_init_Mem(JNIEnv *env, jobject igcls, jobject mname_jh, jobject target_jh)) { |
2534 | 2444 |
if (mname_jh == NULL || target_jh == NULL) { THROW(vmSymbols::java_lang_InternalError()); } |
2445 |
Handle mname(THREAD, JNIHandles::resolve_non_null(mname_jh)); |
|
2446 |
oop target_oop = JNIHandles::resolve_non_null(target_jh); |
|
2447 |
MethodHandles::init_MemberName(mname(), target_oop); |
|
2448 |
} |
|
2449 |
JVM_END |
|
2450 |
||
2451 |
// void expand(MemberName self) |
|
8676
9098d4e927e1
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8675
diff
changeset
|
2452 |
JVM_ENTRY(void, MHN_expand_Mem(JNIEnv *env, jobject igcls, jobject mname_jh)) { |
2534 | 2453 |
if (mname_jh == NULL) { THROW(vmSymbols::java_lang_InternalError()); } |
2454 |
Handle mname(THREAD, JNIHandles::resolve_non_null(mname_jh)); |
|
2455 |
MethodHandles::expand_MemberName(mname, 0, CHECK); |
|
2456 |
} |
|
2457 |
JVM_END |
|
2458 |
||
2459 |
// void resolve(MemberName self, Class<?> caller) |
|
8676
9098d4e927e1
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8675
diff
changeset
|
2460 |
JVM_ENTRY(void, MHN_resolve_Mem(JNIEnv *env, jobject igcls, jobject mname_jh, jclass caller_jh)) { |
2534 | 2461 |
if (mname_jh == NULL) { THROW(vmSymbols::java_lang_InternalError()); } |
2462 |
Handle mname(THREAD, JNIHandles::resolve_non_null(mname_jh)); |
|
5420
586d3988e72b
6939134: JSR 292 adjustments to method handle invocation
jrose
parents:
5050
diff
changeset
|
2463 |
|
586d3988e72b
6939134: JSR 292 adjustments to method handle invocation
jrose
parents:
5050
diff
changeset
|
2464 |
// The trusted Java code that calls this method should already have performed |
586d3988e72b
6939134: JSR 292 adjustments to method handle invocation
jrose
parents:
5050
diff
changeset
|
2465 |
// access checks on behalf of the given caller. But, we can verify this. |
586d3988e72b
6939134: JSR 292 adjustments to method handle invocation
jrose
parents:
5050
diff
changeset
|
2466 |
if (VerifyMethodHandles && caller_jh != NULL) { |
8676
9098d4e927e1
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8675
diff
changeset
|
2467 |
klassOop reference_klass = java_lang_Class::as_klassOop(java_lang_invoke_MemberName::clazz(mname())); |
5420
586d3988e72b
6939134: JSR 292 adjustments to method handle invocation
jrose
parents:
5050
diff
changeset
|
2468 |
if (reference_klass != NULL) { |
586d3988e72b
6939134: JSR 292 adjustments to method handle invocation
jrose
parents:
5050
diff
changeset
|
2469 |
// Emulate LinkResolver::check_klass_accessability. |
586d3988e72b
6939134: JSR 292 adjustments to method handle invocation
jrose
parents:
5050
diff
changeset
|
2470 |
klassOop caller = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(caller_jh)); |
586d3988e72b
6939134: JSR 292 adjustments to method handle invocation
jrose
parents:
5050
diff
changeset
|
2471 |
if (!Reflection::verify_class_access(caller, |
586d3988e72b
6939134: JSR 292 adjustments to method handle invocation
jrose
parents:
5050
diff
changeset
|
2472 |
reference_klass, |
586d3988e72b
6939134: JSR 292 adjustments to method handle invocation
jrose
parents:
5050
diff
changeset
|
2473 |
true)) { |
586d3988e72b
6939134: JSR 292 adjustments to method handle invocation
jrose
parents:
5050
diff
changeset
|
2474 |
THROW_MSG(vmSymbols::java_lang_InternalError(), Klass::cast(reference_klass)->external_name()); |
586d3988e72b
6939134: JSR 292 adjustments to method handle invocation
jrose
parents:
5050
diff
changeset
|
2475 |
} |
586d3988e72b
6939134: JSR 292 adjustments to method handle invocation
jrose
parents:
5050
diff
changeset
|
2476 |
} |
586d3988e72b
6939134: JSR 292 adjustments to method handle invocation
jrose
parents:
5050
diff
changeset
|
2477 |
} |
586d3988e72b
6939134: JSR 292 adjustments to method handle invocation
jrose
parents:
5050
diff
changeset
|
2478 |
|
2534 | 2479 |
MethodHandles::resolve_MemberName(mname, CHECK); |
2480 |
} |
|
2481 |
JVM_END |
|
2482 |
||
2483 |
// static native int getMembers(Class<?> defc, String matchName, String matchSig, |
|
2484 |
// int matchFlags, Class<?> caller, int skip, MemberName[] results); |
|
8676
9098d4e927e1
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8675
diff
changeset
|
2485 |
JVM_ENTRY(jint, MHN_getMembers(JNIEnv *env, jobject igcls, |
2534 | 2486 |
jclass clazz_jh, jstring name_jh, jstring sig_jh, |
2487 |
int mflags, jclass caller_jh, jint skip, jobjectArray results_jh)) { |
|
2488 |
if (clazz_jh == NULL || results_jh == NULL) return -1; |
|
2489 |
klassOop k_oop = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(clazz_jh)); |
|
2490 |
||
2491 |
objArrayOop results = (objArrayOop) JNIHandles::resolve(results_jh); |
|
2492 |
if (results == NULL || !results->is_objArray()) return -1; |
|
2493 |
||
8076
96d498ec7ae1
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
7887
diff
changeset
|
2494 |
TempNewSymbol name = NULL; |
96d498ec7ae1
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
7887
diff
changeset
|
2495 |
TempNewSymbol sig = NULL; |
2534 | 2496 |
if (name_jh != NULL) { |
2497 |
name = java_lang_String::as_symbol_or_null(JNIHandles::resolve_non_null(name_jh)); |
|
2498 |
if (name == NULL) return 0; // a match is not possible |
|
2499 |
} |
|
2500 |
if (sig_jh != NULL) { |
|
2501 |
sig = java_lang_String::as_symbol_or_null(JNIHandles::resolve_non_null(sig_jh)); |
|
2502 |
if (sig == NULL) return 0; // a match is not possible |
|
2503 |
} |
|
2504 |
||
2505 |
klassOop caller = NULL; |
|
2506 |
if (caller_jh != NULL) { |
|
2507 |
oop caller_oop = JNIHandles::resolve_non_null(caller_jh); |
|
2508 |
if (!java_lang_Class::is_instance(caller_oop)) return -1; |
|
2509 |
caller = java_lang_Class::as_klassOop(caller_oop); |
|
2510 |
} |
|
2511 |
||
2512 |
if (name != NULL && sig != NULL && results != NULL) { |
|
2513 |
// try a direct resolve |
|
2514 |
// %%% TO DO |
|
2515 |
} |
|
2516 |
||
2517 |
int res = MethodHandles::find_MemberNames(k_oop, name, sig, mflags, |
|
2518 |
caller, skip, results); |
|
2519 |
// TO DO: expand at least some of the MemberNames, to avoid massive callbacks |
|
2520 |
return res; |
|
2521 |
} |
|
2522 |
JVM_END |
|
2523 |
||
2570
ecc7862946d4
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
2534
diff
changeset
|
2524 |
|
2534 | 2525 |
/// JVM_RegisterMethodHandleMethods |
2526 |
||
2527 |
#define LANG "Ljava/lang/" |
|
9116 | 2528 |
#define JLINV "Ljava/lang/invoke/" |
2534 | 2529 |
|
2530 |
#define OBJ LANG"Object;" |
|
2531 |
#define CLS LANG"Class;" |
|
2532 |
#define STRG LANG"String;" |
|
9116 | 2533 |
#define MT JLINV"MethodType;" |
2534 |
#define MH JLINV"MethodHandle;" |
|
2535 |
#define MEM JLINV"MemberName;" |
|
2536 |
#define AMH JLINV"AdapterMethodHandle;" |
|
2537 |
#define BMH JLINV"BoundMethodHandle;" |
|
2538 |
#define DMH JLINV"DirectMethodHandle;" |
|
2534 | 2539 |
|
2540 |
#define CC (char*) /*cast a literal from (const char*)*/ |
|
2541 |
#define FN_PTR(f) CAST_FROM_FN_PTR(void*, &f) |
|
2542 |
||
8676
9098d4e927e1
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8675
diff
changeset
|
2543 |
// These are the native methods on sun.invoke.MethodHandleNatives. |
2534 | 2544 |
static JNINativeMethod methods[] = { |
2545 |
// void init(MemberName self, AccessibleObject ref) |
|
8676
9098d4e927e1
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8675
diff
changeset
|
2546 |
{CC"init", CC"("AMH""MH"I)V", FN_PTR(MHN_init_AMH)}, |
9098d4e927e1
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8675
diff
changeset
|
2547 |
{CC"init", CC"("BMH""OBJ"I)V", FN_PTR(MHN_init_BMH)}, |
9098d4e927e1
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8675
diff
changeset
|
2548 |
{CC"init", CC"("DMH""OBJ"Z"CLS")V", FN_PTR(MHN_init_DMH)}, |
9098d4e927e1
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8675
diff
changeset
|
2549 |
{CC"init", CC"("MT")V", FN_PTR(MHN_init_MT)}, |
9098d4e927e1
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8675
diff
changeset
|
2550 |
{CC"init", CC"("MEM""OBJ")V", FN_PTR(MHN_init_Mem)}, |
9098d4e927e1
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8675
diff
changeset
|
2551 |
{CC"expand", CC"("MEM")V", FN_PTR(MHN_expand_Mem)}, |
9098d4e927e1
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8675
diff
changeset
|
2552 |
{CC"resolve", CC"("MEM""CLS")V", FN_PTR(MHN_resolve_Mem)}, |
9098d4e927e1
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8675
diff
changeset
|
2553 |
{CC"getTarget", CC"("MH"I)"OBJ, FN_PTR(MHN_getTarget)}, |
9098d4e927e1
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8675
diff
changeset
|
2554 |
{CC"getConstant", CC"(I)I", FN_PTR(MHN_getConstant)}, |
2534 | 2555 |
// static native int getNamedCon(int which, Object[] name) |
8676
9098d4e927e1
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8675
diff
changeset
|
2556 |
{CC"getNamedCon", CC"(I["OBJ")I", FN_PTR(MHN_getNamedCon)}, |
2534 | 2557 |
// static native int getMembers(Class<?> defc, String matchName, String matchSig, |
2558 |
// int matchFlags, Class<?> caller, int skip, MemberName[] results); |
|
8676
9098d4e927e1
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8675
diff
changeset
|
2559 |
{CC"getMembers", CC"("CLS""STRG""STRG"I"CLS"I["MEM")I", FN_PTR(MHN_getMembers)} |
2534 | 2560 |
}; |
2561 |
||
2562 |
// This one function is exported, used by NativeLookup. |
|
2563 |
||
2564 |
JVM_ENTRY(void, JVM_RegisterMethodHandleMethods(JNIEnv *env, jclass MHN_class)) { |
|
2565 |
assert(MethodHandles::spot_check_entry_names(), "entry enum is OK"); |
|
2566 |
||
8883
5569135acca3
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
8676
diff
changeset
|
2567 |
if (!EnableInvokeDynamic) { |
5569135acca3
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
8676
diff
changeset
|
2568 |
warning("JSR 292 is disabled in this JVM. Use -XX:+UnlockDiagnosticVMOptions -XX:+EnableInvokeDynamic to enable."); |
2534 | 2569 |
return; // bind nothing |
2570 |
} |
|
2571 |
||
4094
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
2572 |
bool enable_MH = true; |
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
2573 |
|
9116 | 2574 |
{ |
2534 | 2575 |
ThreadToNativeFromVM ttnfv(thread); |
2576 |
||
2577 |
int status = env->RegisterNatives(MHN_class, methods, sizeof(methods)/sizeof(JNINativeMethod)); |
|
2578 |
if (env->ExceptionOccurred()) { |
|
9116 | 2579 |
MethodHandles::set_enabled(false); |
2580 |
warning("JSR 292 method handle code is mismatched to this JVM. Disabling support."); |
|
2581 |
enable_MH = false; |
|
2534 | 2582 |
env->ExceptionClear(); |
2583 |
} |
|
2584 |
} |
|
2570
ecc7862946d4
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
2534
diff
changeset
|
2585 |
|
4094
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
2586 |
if (enable_MH) { |
8675
e9fef2a9bef7
6839872: remove implementation inheritance from JSR 292 APIs
jrose
parents:
8076
diff
changeset
|
2587 |
KlassHandle MHN_klass = SystemDictionaryHandles::MethodHandleNatives_klass(); |
9116 | 2588 |
if (MHN_klass.not_null()) { |
8076
96d498ec7ae1
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
7887
diff
changeset
|
2589 |
TempNewSymbol raiseException_name = SymbolTable::new_symbol("raiseException", CHECK); |
96d498ec7ae1
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
7887
diff
changeset
|
2590 |
TempNewSymbol raiseException_sig = SymbolTable::new_symbol("(ILjava/lang/Object;Ljava/lang/Object;)V", CHECK); |
9116 | 2591 |
methodOop raiseException_method = instanceKlass::cast(MHN_klass->as_klassOop()) |
8076
96d498ec7ae1
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
7887
diff
changeset
|
2592 |
->find_method(raiseException_name, raiseException_sig); |
4094
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
2593 |
if (raiseException_method != NULL && raiseException_method->is_static()) { |
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
2594 |
MethodHandles::set_raise_exception_method(raiseException_method); |
9116 | 2595 |
} else { |
2596 |
warning("JSR 292 method handle code is mismatched to this JVM. Disabling support."); |
|
2597 |
enable_MH = false; |
|
4094
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
2598 |
} |
9116 | 2599 |
} else { |
7887
7aa0354cbf25
7010180: JSR 292 InvokeDynamicPrintArgs fails with: assert(_adapter == NULL) failed: init'd to NULL
twisti
parents:
7712
diff
changeset
|
2600 |
enable_MH = false; |
4094
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
2601 |
} |
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
2602 |
} |
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
2603 |
|
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
2604 |
if (enable_MH) { |
7887
7aa0354cbf25
7010180: JSR 292 InvokeDynamicPrintArgs fails with: assert(_adapter == NULL) failed: init'd to NULL
twisti
parents:
7712
diff
changeset
|
2605 |
MethodHandles::generate_adapters(); |
4094
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
2606 |
MethodHandles::set_enabled(true); |
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
2607 |
} |
2534 | 2608 |
} |
2609 |
JVM_END |