author | jrose |
Sat, 01 May 2010 21:57:35 -0700 | |
changeset 5421 | e294db54fc0d |
parent 5420 | 586d3988e72b |
child 5547 | f4b087cbb361 |
permissions | -rw-r--r-- |
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/* |
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* Copyright 2008-2010 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
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* CA 95054 USA or visit www.sun.com if you need additional information or |
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* have any questions. |
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* |
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*/ |
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/* |
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* JSR 292 reference implementation: method handles |
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*/ |
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#include "incls/_precompiled.incl" |
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#include "incls/_methodHandles.cpp.incl" |
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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 (!EnableMethodHandles || SystemDictionary::MethodHandle_klass() == NULL) return; |
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assert(_adapter_code == NULL, "generate only once"); |
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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->instructions_begin(), _adapter_code->instructions_size()); |
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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 && EnableMethodHandles, "can only enable once, and only if -XX:+EnableMethodHandles"); |
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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_dyn_MethodType::is_instance(mtype)) { |
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// Extract receiver type restriction from mtype.ptypes[0]. |
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objArrayOop ptypes = java_dyn_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; |
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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); |
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} |
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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 = sun_dyn_DirectMethodHandle::vmtarget(mh); |
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int vmindex = sun_dyn_DirectMethodHandle::vmindex(mh); |
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oop mtype = sun_dyn_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(sun_dyn_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_dyn_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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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_dyn_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; |
227 |
} |
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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) { |
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assert(mh->klass() == SystemDictionary::AdapterMethodHandle_klass(), ""); |
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for (oop amh = mh;;) { |
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// Adapter MHs can be stacked to convert several arguments. |
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int conv_op = adapter_conversion_op(sun_dyn_AdapterMethodHandle::conversion(amh)); |
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decode_flags_result |= (_dmf_adapter_lsb << conv_op) & _DMF_ADAPTER_MASK; |
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oop target = java_dyn_MethodHandle::vmtarget(amh); |
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if (target == NULL) return NULL; |
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klassOop tk = target->klass(); |
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if (tk == SystemDictionary::AdapterMethodHandle_klass()) { |
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amh = target; |
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243 |
continue; |
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} else { |
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// must be a BMH (which will bind some more arguments) or a DMH (for the final call) |
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return MethodHandles::decode_MethodHandle(target, receiver_limit_result, decode_flags_result); |
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} |
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} |
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} |
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methodOop MethodHandles::decode_MethodHandle(oop mh, klassOop& receiver_limit_result, int& decode_flags_result) { |
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252 |
if (mh == NULL) return NULL; |
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klassOop mhk = mh->klass(); |
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assert(java_dyn_MethodHandle::is_subclass(mhk), "must be a MethodHandle"); |
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if (mhk == SystemDictionary::DirectMethodHandle_klass()) { |
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256 |
return decode_DirectMethodHandle(mh, receiver_limit_result, decode_flags_result); |
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} else if (mhk == SystemDictionary::BoundMethodHandle_klass()) { |
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258 |
return decode_BoundMethodHandle(mh, receiver_limit_result, decode_flags_result); |
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} else if (mhk == SystemDictionary::AdapterMethodHandle_klass()) { |
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return decode_AdapterMethodHandle(mh, receiver_limit_result, decode_flags_result); |
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} else if (sun_dyn_BoundMethodHandle::is_subclass(mhk)) { |
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// could be a JavaMethodHandle (but not an adapter MH) |
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263 |
return decode_BoundMethodHandle(mh, receiver_limit_result, decode_flags_result); |
2534 | 264 |
} else { |
265 |
assert(false, "cannot parse this MH"); |
|
266 |
return NULL; // random MH? |
|
267 |
} |
|
268 |
} |
|
269 |
||
270 |
methodOop MethodHandles::decode_methodOop(methodOop m, int& decode_flags_result) { |
|
271 |
assert(m->is_method(), ""); |
|
272 |
if (m->is_static()) { |
|
273 |
// check that signature begins '(L' or '([' (not '(I', '()', etc.) |
|
274 |
symbolOop sig = m->signature(); |
|
275 |
BasicType recv_bt = char2type(sig->byte_at(1)); |
|
276 |
// Note: recv_bt might be T_ILLEGAL if byte_at(2) is ')' |
|
277 |
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 | 280 |
} else { |
281 |
// non-static method |
|
282 |
decode_flags_result |= _dmf_has_receiver; |
|
283 |
if (!m->can_be_statically_bound() && !m->is_initializer()) { |
|
284 |
decode_flags_result |= _dmf_does_dispatch; |
|
285 |
if (Klass::cast(m->method_holder())->is_interface()) |
|
286 |
decode_flags_result |= _dmf_from_interface; |
|
287 |
} |
|
288 |
} |
|
289 |
return m; |
|
290 |
} |
|
291 |
||
292 |
||
293 |
// A trusted party is handing us a cookie to determine a method. |
|
294 |
// Let's boil it down to the method oop they really want. |
|
295 |
methodOop MethodHandles::decode_method(oop x, klassOop& receiver_limit_result, int& decode_flags_result) { |
|
296 |
decode_flags_result = 0; |
|
297 |
receiver_limit_result = NULL; |
|
298 |
klassOop xk = x->klass(); |
|
299 |
if (xk == Universe::methodKlassObj()) { |
|
300 |
return decode_methodOop((methodOop) x, decode_flags_result); |
|
301 |
} else if (xk == SystemDictionary::MemberName_klass()) { |
|
302 |
// Note: This only works if the MemberName has already been resolved. |
|
303 |
return decode_MemberName(x, receiver_limit_result, decode_flags_result); |
|
304 |
} else if (java_dyn_MethodHandle::is_subclass(xk)) { |
|
305 |
return decode_MethodHandle(x, receiver_limit_result, decode_flags_result); |
|
4571 | 306 |
} else if (xk == SystemDictionary::reflect_Method_klass()) { |
2534 | 307 |
oop clazz = java_lang_reflect_Method::clazz(x); |
308 |
int slot = java_lang_reflect_Method::slot(x); |
|
309 |
klassOop k = java_lang_Class::as_klassOop(clazz); |
|
310 |
if (k != NULL && Klass::cast(k)->oop_is_instance()) |
|
311 |
return decode_methodOop(instanceKlass::cast(k)->method_with_idnum(slot), |
|
312 |
decode_flags_result); |
|
4571 | 313 |
} else if (xk == SystemDictionary::reflect_Constructor_klass()) { |
2534 | 314 |
oop clazz = java_lang_reflect_Constructor::clazz(x); |
315 |
int slot = java_lang_reflect_Constructor::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); |
|
320 |
} else { |
|
321 |
// unrecognized object |
|
322 |
assert(!x->is_method(), "already checked"); |
|
323 |
assert(!sun_dyn_MemberName::is_instance(x), "already checked"); |
|
324 |
} |
|
325 |
return NULL; |
|
326 |
} |
|
327 |
||
328 |
||
329 |
int MethodHandles::decode_MethodHandle_stack_pushes(oop mh) { |
|
330 |
if (mh->klass() == SystemDictionary::DirectMethodHandle_klass()) |
|
331 |
return 0; // no push/pop |
|
332 |
int this_vmslots = java_dyn_MethodHandle::vmslots(mh); |
|
333 |
int last_vmslots = 0; |
|
334 |
oop last_mh = mh; |
|
335 |
for (;;) { |
|
336 |
oop target = java_dyn_MethodHandle::vmtarget(last_mh); |
|
337 |
if (target->klass() == SystemDictionary::DirectMethodHandle_klass()) { |
|
338 |
last_vmslots = java_dyn_MethodHandle::vmslots(target); |
|
339 |
break; |
|
340 |
} else if (!java_dyn_MethodHandle::is_instance(target)) { |
|
341 |
// might be klass or method |
|
342 |
assert(target->is_method(), "must get here with a direct ref to method"); |
|
343 |
last_vmslots = methodOop(target)->size_of_parameters(); |
|
344 |
break; |
|
345 |
} |
|
346 |
last_mh = target; |
|
347 |
} |
|
348 |
// If I am called with fewer VM slots than my ultimate callee, |
|
349 |
// it must be that I push the additionally needed slots. |
|
350 |
// Likewise if am called with more VM slots, I will pop them. |
|
351 |
return (last_vmslots - this_vmslots); |
|
352 |
} |
|
353 |
||
354 |
||
355 |
// MemberName support |
|
356 |
||
357 |
// import sun_dyn_MemberName.* |
|
358 |
enum { |
|
359 |
IS_METHOD = sun_dyn_MemberName::MN_IS_METHOD, |
|
360 |
IS_CONSTRUCTOR = sun_dyn_MemberName::MN_IS_CONSTRUCTOR, |
|
361 |
IS_FIELD = sun_dyn_MemberName::MN_IS_FIELD, |
|
362 |
IS_TYPE = sun_dyn_MemberName::MN_IS_TYPE, |
|
363 |
SEARCH_SUPERCLASSES = sun_dyn_MemberName::MN_SEARCH_SUPERCLASSES, |
|
364 |
SEARCH_INTERFACES = sun_dyn_MemberName::MN_SEARCH_INTERFACES, |
|
365 |
ALL_KINDS = IS_METHOD | IS_CONSTRUCTOR | IS_FIELD | IS_TYPE, |
|
366 |
VM_INDEX_UNINITIALIZED = sun_dyn_MemberName::VM_INDEX_UNINITIALIZED |
|
367 |
}; |
|
368 |
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Handle MethodHandles::new_MemberName(TRAPS) { |
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370 |
Handle empty; |
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371 |
instanceKlassHandle k(THREAD, SystemDictionary::MemberName_klass()); |
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372 |
if (!k->is_initialized()) k->initialize(CHECK_(empty)); |
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return Handle(THREAD, k->allocate_instance(THREAD)); |
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374 |
} |
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375 |
|
2534 | 376 |
void MethodHandles::init_MemberName(oop mname_oop, oop target_oop) { |
4571 | 377 |
if (target_oop->klass() == SystemDictionary::reflect_Field_klass()) { |
2534 | 378 |
oop clazz = java_lang_reflect_Field::clazz(target_oop); // fd.field_holder() |
379 |
int slot = java_lang_reflect_Field::slot(target_oop); // fd.index() |
|
380 |
int mods = java_lang_reflect_Field::modifiers(target_oop); |
|
381 |
klassOop k = java_lang_Class::as_klassOop(clazz); |
|
382 |
int offset = instanceKlass::cast(k)->offset_from_fields(slot); |
|
383 |
init_MemberName(mname_oop, k, accessFlags_from(mods), offset); |
|
384 |
} else { |
|
385 |
int decode_flags = 0; klassOop receiver_limit = NULL; |
|
386 |
methodOop m = MethodHandles::decode_method(target_oop, |
|
387 |
receiver_limit, decode_flags); |
|
388 |
bool do_dispatch = ((decode_flags & MethodHandles::_dmf_does_dispatch) != 0); |
|
389 |
init_MemberName(mname_oop, m, do_dispatch); |
|
390 |
} |
|
391 |
} |
|
392 |
||
393 |
void MethodHandles::init_MemberName(oop mname_oop, methodOop m, bool do_dispatch) { |
|
394 |
int flags = ((m->is_initializer() ? IS_CONSTRUCTOR : IS_METHOD) |
|
395 |
| (jushort)( m->access_flags().as_short() & JVM_RECOGNIZED_METHOD_MODIFIERS )); |
|
396 |
oop vmtarget = m; |
|
397 |
int vmindex = methodOopDesc::invalid_vtable_index; // implies no info yet |
|
398 |
if (!do_dispatch || (flags & IS_CONSTRUCTOR) || m->can_be_statically_bound()) |
|
399 |
vmindex = methodOopDesc::nonvirtual_vtable_index; // implies never any dispatch |
|
400 |
assert(vmindex != VM_INDEX_UNINITIALIZED, "Java sentinel value"); |
|
401 |
sun_dyn_MemberName::set_vmtarget(mname_oop, vmtarget); |
|
402 |
sun_dyn_MemberName::set_vmindex(mname_oop, vmindex); |
|
403 |
sun_dyn_MemberName::set_flags(mname_oop, flags); |
|
5420
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404 |
sun_dyn_MemberName::set_clazz(mname_oop, Klass::cast(m->method_holder())->java_mirror()); |
2534 | 405 |
} |
406 |
||
407 |
void MethodHandles::init_MemberName(oop mname_oop, klassOop field_holder, AccessFlags mods, int offset) { |
|
408 |
int flags = (IS_FIELD | (jushort)( mods.as_short() & JVM_RECOGNIZED_FIELD_MODIFIERS )); |
|
409 |
oop vmtarget = field_holder; |
|
5420
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|
410 |
int vmindex = offset; // determines the field uniquely when combined with static bit |
2534 | 411 |
assert(vmindex != VM_INDEX_UNINITIALIZED, "bad alias on vmindex"); |
412 |
sun_dyn_MemberName::set_vmtarget(mname_oop, vmtarget); |
|
413 |
sun_dyn_MemberName::set_vmindex(mname_oop, vmindex); |
|
414 |
sun_dyn_MemberName::set_flags(mname_oop, flags); |
|
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|
415 |
sun_dyn_MemberName::set_clazz(mname_oop, Klass::cast(field_holder)->java_mirror()); |
2534 | 416 |
} |
417 |
||
418 |
||
419 |
methodOop MethodHandles::decode_MemberName(oop mname, klassOop& receiver_limit_result, int& decode_flags_result) { |
|
420 |
int flags = sun_dyn_MemberName::flags(mname); |
|
421 |
if ((flags & (IS_METHOD | IS_CONSTRUCTOR)) == 0) return NULL; // not invocable |
|
422 |
oop vmtarget = sun_dyn_MemberName::vmtarget(mname); |
|
423 |
int vmindex = sun_dyn_MemberName::vmindex(mname); |
|
424 |
if (vmindex == VM_INDEX_UNINITIALIZED) return NULL; // not resolved |
|
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425 |
methodOop m = decode_vmtarget(vmtarget, vmindex, NULL, receiver_limit_result, decode_flags_result); |
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|
426 |
oop clazz = sun_dyn_MemberName::clazz(mname); |
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|
427 |
if (clazz != NULL && java_lang_Class::is_instance(clazz)) { |
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|
428 |
klassOop klass = java_lang_Class::as_klassOop(clazz); |
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|
429 |
if (klass != NULL) receiver_limit_result = klass; |
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|
430 |
} |
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|
431 |
return m; |
2534 | 432 |
} |
433 |
||
434 |
// An unresolved member name is a mere symbolic reference. |
|
435 |
// Resolving it plants a vmtarget/vmindex in it, |
|
436 |
// which refers dirctly to JVM internals. |
|
437 |
void MethodHandles::resolve_MemberName(Handle mname, TRAPS) { |
|
438 |
assert(sun_dyn_MemberName::is_instance(mname()), ""); |
|
439 |
#ifdef ASSERT |
|
440 |
// If this assert throws, renegotiate the sentinel value used by the Java code, |
|
441 |
// so that it is distinct from any valid vtable index value, and any special |
|
442 |
// values defined in methodOopDesc::VtableIndexFlag. |
|
443 |
// The point of the slop is to give the Java code and the JVM some room |
|
444 |
// to independently specify sentinel values. |
|
445 |
const int sentinel_slop = 10; |
|
446 |
const int sentinel_limit = methodOopDesc::highest_unused_vtable_index_value - sentinel_slop; |
|
447 |
assert(VM_INDEX_UNINITIALIZED < sentinel_limit, "Java sentinel != JVM sentinels"); |
|
448 |
#endif |
|
449 |
if (sun_dyn_MemberName::vmindex(mname()) != VM_INDEX_UNINITIALIZED) |
|
450 |
return; // already resolved |
|
451 |
oop defc_oop = sun_dyn_MemberName::clazz(mname()); |
|
452 |
oop name_str = sun_dyn_MemberName::name(mname()); |
|
453 |
oop type_str = sun_dyn_MemberName::type(mname()); |
|
454 |
int flags = sun_dyn_MemberName::flags(mname()); |
|
455 |
||
456 |
if (defc_oop == NULL || name_str == NULL || type_str == NULL) { |
|
457 |
THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "nothing to resolve"); |
|
458 |
} |
|
459 |
klassOop defc_klassOop = java_lang_Class::as_klassOop(defc_oop); |
|
460 |
defc_oop = NULL; // safety |
|
461 |
if (defc_klassOop == NULL) return; // a primitive; no resolution possible |
|
462 |
if (!Klass::cast(defc_klassOop)->oop_is_instance()) { |
|
463 |
if (!Klass::cast(defc_klassOop)->oop_is_array()) return; |
|
4571 | 464 |
defc_klassOop = SystemDictionary::Object_klass(); |
2534 | 465 |
} |
466 |
instanceKlassHandle defc(THREAD, defc_klassOop); |
|
467 |
defc_klassOop = NULL; // safety |
|
468 |
if (defc.is_null()) { |
|
469 |
THROW_MSG(vmSymbols::java_lang_InternalError(), "primitive class"); |
|
470 |
} |
|
471 |
defc->link_class(CHECK); |
|
472 |
||
473 |
// convert the external string name to an internal symbol |
|
474 |
symbolHandle name(THREAD, java_lang_String::as_symbol_or_null(name_str)); |
|
475 |
if (name.is_null()) return; // no such name |
|
476 |
name_str = NULL; // safety |
|
477 |
||
5421
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|
478 |
Handle polymorphic_method_type; |
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|
479 |
bool polymorphic_signature = false; |
e294db54fc0d
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|
480 |
if ((flags & ALL_KINDS) == IS_METHOD && |
e294db54fc0d
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|
481 |
(defc() == SystemDictionary::InvokeDynamic_klass() || |
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|
482 |
(defc() == SystemDictionary::MethodHandle_klass() && |
e294db54fc0d
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|
483 |
methodOopDesc::is_method_handle_invoke_name(name())))) |
e294db54fc0d
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jrose
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diff
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|
484 |
polymorphic_signature = true; |
e294db54fc0d
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diff
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|
485 |
|
2534 | 486 |
// convert the external string or reflective type to an internal signature |
487 |
symbolHandle type; { |
|
488 |
symbolOop type_sym = NULL; |
|
489 |
if (java_dyn_MethodType::is_instance(type_str)) { |
|
5421
e294db54fc0d
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diff
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|
490 |
type_sym = java_dyn_MethodType::as_signature(type_str, polymorphic_signature, CHECK); |
e294db54fc0d
6939196: method handle signatures off the boot class path get linkage errors
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parents:
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diff
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|
491 |
if (polymorphic_signature) |
e294db54fc0d
6939196: method handle signatures off the boot class path get linkage errors
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diff
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|
492 |
polymorphic_method_type = Handle(THREAD, type_str); //preserve exactly |
2534 | 493 |
} else if (java_lang_Class::is_instance(type_str)) { |
5421
e294db54fc0d
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jrose
parents:
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diff
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|
494 |
type_sym = java_lang_Class::as_signature(type_str, false, CHECK); |
2534 | 495 |
} else if (java_lang_String::is_instance(type_str)) { |
5421
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changeset
|
496 |
if (polymorphic_signature) { |
2534 | 497 |
type = java_lang_String::as_symbol(type_str, CHECK); |
498 |
} else { |
|
499 |
type_sym = java_lang_String::as_symbol_or_null(type_str); |
|
500 |
} |
|
501 |
} else { |
|
502 |
THROW_MSG(vmSymbols::java_lang_InternalError(), "unrecognized type"); |
|
503 |
} |
|
504 |
if (type_sym != NULL) |
|
505 |
type = symbolHandle(THREAD, type_sym); |
|
506 |
} |
|
507 |
if (type.is_null()) return; // no such signature exists in the VM |
|
508 |
type_str = NULL; // safety |
|
509 |
||
510 |
// Time to do the lookup. |
|
511 |
switch (flags & ALL_KINDS) { |
|
512 |
case IS_METHOD: |
|
513 |
{ |
|
514 |
CallInfo result; |
|
515 |
{ |
|
516 |
EXCEPTION_MARK; |
|
517 |
if ((flags & JVM_ACC_STATIC) != 0) { |
|
518 |
LinkResolver::resolve_static_call(result, |
|
519 |
defc, name, type, KlassHandle(), false, false, THREAD); |
|
520 |
} else if (defc->is_interface()) { |
|
521 |
LinkResolver::resolve_interface_call(result, Handle(), defc, |
|
522 |
defc, name, type, KlassHandle(), false, false, THREAD); |
|
523 |
} else { |
|
524 |
LinkResolver::resolve_virtual_call(result, Handle(), defc, |
|
525 |
defc, name, type, KlassHandle(), false, false, THREAD); |
|
526 |
} |
|
527 |
if (HAS_PENDING_EXCEPTION) { |
|
528 |
CLEAR_PENDING_EXCEPTION; |
|
5421
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|
529 |
break; // go to second chance |
2534 | 530 |
} |
531 |
} |
|
532 |
methodHandle m = result.resolved_method(); |
|
533 |
oop vmtarget = NULL; |
|
534 |
int vmindex = methodOopDesc::nonvirtual_vtable_index; |
|
535 |
if (defc->is_interface()) { |
|
536 |
vmindex = klassItable::compute_itable_index(m()); |
|
537 |
assert(vmindex >= 0, ""); |
|
538 |
} else if (result.has_vtable_index()) { |
|
539 |
vmindex = result.vtable_index(); |
|
540 |
assert(vmindex >= 0, ""); |
|
541 |
} |
|
542 |
assert(vmindex != VM_INDEX_UNINITIALIZED, ""); |
|
543 |
if (vmindex < 0) { |
|
544 |
assert(result.is_statically_bound(), ""); |
|
545 |
vmtarget = m(); |
|
546 |
} else { |
|
547 |
vmtarget = result.resolved_klass()->as_klassOop(); |
|
548 |
} |
|
549 |
int mods = (m->access_flags().as_short() & JVM_RECOGNIZED_METHOD_MODIFIERS); |
|
550 |
sun_dyn_MemberName::set_vmtarget(mname(), vmtarget); |
|
551 |
sun_dyn_MemberName::set_vmindex(mname(), vmindex); |
|
552 |
sun_dyn_MemberName::set_modifiers(mname(), mods); |
|
553 |
DEBUG_ONLY(int junk; klassOop junk2); |
|
554 |
assert(decode_MemberName(mname(), junk2, junk) == result.resolved_method()(), |
|
555 |
"properly stored for later decoding"); |
|
556 |
return; |
|
557 |
} |
|
558 |
case IS_CONSTRUCTOR: |
|
559 |
{ |
|
560 |
CallInfo result; |
|
561 |
{ |
|
562 |
EXCEPTION_MARK; |
|
563 |
if (name() == vmSymbols::object_initializer_name()) { |
|
564 |
LinkResolver::resolve_special_call(result, |
|
565 |
defc, name, type, KlassHandle(), false, THREAD); |
|
566 |
} else { |
|
567 |
break; // will throw after end of switch |
|
568 |
} |
|
569 |
if (HAS_PENDING_EXCEPTION) { |
|
570 |
CLEAR_PENDING_EXCEPTION; |
|
571 |
return; |
|
572 |
} |
|
573 |
} |
|
574 |
assert(result.is_statically_bound(), ""); |
|
575 |
methodHandle m = result.resolved_method(); |
|
576 |
oop vmtarget = m(); |
|
577 |
int vmindex = methodOopDesc::nonvirtual_vtable_index; |
|
578 |
int mods = (m->access_flags().as_short() & JVM_RECOGNIZED_METHOD_MODIFIERS); |
|
579 |
sun_dyn_MemberName::set_vmtarget(mname(), vmtarget); |
|
580 |
sun_dyn_MemberName::set_vmindex(mname(), vmindex); |
|
581 |
sun_dyn_MemberName::set_modifiers(mname(), mods); |
|
582 |
DEBUG_ONLY(int junk; klassOop junk2); |
|
583 |
assert(decode_MemberName(mname(), junk2, junk) == result.resolved_method()(), |
|
584 |
"properly stored for later decoding"); |
|
585 |
return; |
|
586 |
} |
|
587 |
case IS_FIELD: |
|
588 |
{ |
|
589 |
// This is taken from LinkResolver::resolve_field, sans access checks. |
|
590 |
fieldDescriptor fd; // find_field initializes fd if found |
|
591 |
KlassHandle sel_klass(THREAD, instanceKlass::cast(defc())->find_field(name(), type(), &fd)); |
|
592 |
// check if field exists; i.e., if a klass containing the field def has been selected |
|
593 |
if (sel_klass.is_null()) return; |
|
594 |
oop vmtarget = sel_klass->as_klassOop(); |
|
595 |
int vmindex = fd.offset(); |
|
596 |
int mods = (fd.access_flags().as_short() & JVM_RECOGNIZED_FIELD_MODIFIERS); |
|
597 |
if (vmindex == VM_INDEX_UNINITIALIZED) break; // should not happen |
|
598 |
sun_dyn_MemberName::set_vmtarget(mname(), vmtarget); |
|
599 |
sun_dyn_MemberName::set_vmindex(mname(), vmindex); |
|
600 |
sun_dyn_MemberName::set_modifiers(mname(), mods); |
|
601 |
return; |
|
602 |
} |
|
5421
e294db54fc0d
6939196: method handle signatures off the boot class path get linkage errors
jrose
parents:
5420
diff
changeset
|
603 |
default: |
e294db54fc0d
6939196: method handle signatures off the boot class path get linkage errors
jrose
parents:
5420
diff
changeset
|
604 |
THROW_MSG(vmSymbols::java_lang_InternalError(), "unrecognized MemberName format"); |
2534 | 605 |
} |
5421
e294db54fc0d
6939196: method handle signatures off the boot class path get linkage errors
jrose
parents:
5420
diff
changeset
|
606 |
|
e294db54fc0d
6939196: method handle signatures off the boot class path get linkage errors
jrose
parents:
5420
diff
changeset
|
607 |
// Second chance. |
e294db54fc0d
6939196: method handle signatures off the boot class path get linkage errors
jrose
parents:
5420
diff
changeset
|
608 |
if (polymorphic_method_type.not_null()) { |
e294db54fc0d
6939196: method handle signatures off the boot class path get linkage errors
jrose
parents:
5420
diff
changeset
|
609 |
// 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
|
610 |
Handle cur_class_loader; |
e294db54fc0d
6939196: method handle signatures off the boot class path get linkage errors
jrose
parents:
5420
diff
changeset
|
611 |
const int nptypes = java_dyn_MethodType::ptype_count(polymorphic_method_type()); |
e294db54fc0d
6939196: method handle signatures off the boot class path get linkage errors
jrose
parents:
5420
diff
changeset
|
612 |
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
|
613 |
oop type_mirror; |
e294db54fc0d
6939196: method handle signatures off the boot class path get linkage errors
jrose
parents:
5420
diff
changeset
|
614 |
if (i < nptypes) type_mirror = java_dyn_MethodType::ptype(polymorphic_method_type(), i); |
e294db54fc0d
6939196: method handle signatures off the boot class path get linkage errors
jrose
parents:
5420
diff
changeset
|
615 |
else type_mirror = java_dyn_MethodType::rtype(polymorphic_method_type()); |
e294db54fc0d
6939196: method handle signatures off the boot class path get linkage errors
jrose
parents:
5420
diff
changeset
|
616 |
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
|
617 |
if (example_type == NULL) continue; |
e294db54fc0d
6939196: method handle signatures off the boot class path get linkage errors
jrose
parents:
5420
diff
changeset
|
618 |
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
|
619 |
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
|
620 |
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
|
621 |
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
|
622 |
type, |
e294db54fc0d
6939196: method handle signatures off the boot class path get linkage errors
jrose
parents:
5420
diff
changeset
|
623 |
KlassHandle(THREAD, example_type), |
e294db54fc0d
6939196: method handle signatures off the boot class path get linkage errors
jrose
parents:
5420
diff
changeset
|
624 |
THREAD); |
e294db54fc0d
6939196: method handle signatures off the boot class path get linkage errors
jrose
parents:
5420
diff
changeset
|
625 |
if (HAS_PENDING_EXCEPTION) { |
e294db54fc0d
6939196: method handle signatures off the boot class path get linkage errors
jrose
parents:
5420
diff
changeset
|
626 |
CLEAR_PENDING_EXCEPTION; |
e294db54fc0d
6939196: method handle signatures off the boot class path get linkage errors
jrose
parents:
5420
diff
changeset
|
627 |
m = NULL; |
e294db54fc0d
6939196: method handle signatures off the boot class path get linkage errors
jrose
parents:
5420
diff
changeset
|
628 |
// 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
|
629 |
} |
e294db54fc0d
6939196: method handle signatures off the boot class path get linkage errors
jrose
parents:
5420
diff
changeset
|
630 |
if (m != NULL) { |
e294db54fc0d
6939196: method handle signatures off the boot class path get linkage errors
jrose
parents:
5420
diff
changeset
|
631 |
int mods = (m->access_flags().as_short() & JVM_RECOGNIZED_METHOD_MODIFIERS); |
e294db54fc0d
6939196: method handle signatures off the boot class path get linkage errors
jrose
parents:
5420
diff
changeset
|
632 |
sun_dyn_MemberName::set_vmtarget(mname(), m); |
e294db54fc0d
6939196: method handle signatures off the boot class path get linkage errors
jrose
parents:
5420
diff
changeset
|
633 |
sun_dyn_MemberName::set_vmindex(mname(), m->vtable_index()); |
e294db54fc0d
6939196: method handle signatures off the boot class path get linkage errors
jrose
parents:
5420
diff
changeset
|
634 |
sun_dyn_MemberName::set_modifiers(mname(), mods); |
e294db54fc0d
6939196: method handle signatures off the boot class path get linkage errors
jrose
parents:
5420
diff
changeset
|
635 |
return; |
e294db54fc0d
6939196: method handle signatures off the boot class path get linkage errors
jrose
parents:
5420
diff
changeset
|
636 |
} |
e294db54fc0d
6939196: method handle signatures off the boot class path get linkage errors
jrose
parents:
5420
diff
changeset
|
637 |
} |
e294db54fc0d
6939196: method handle signatures off the boot class path get linkage errors
jrose
parents:
5420
diff
changeset
|
638 |
} |
2534 | 639 |
} |
640 |
||
641 |
// Conversely, a member name which is only initialized from JVM internals |
|
642 |
// may have null defc, name, and type fields. |
|
643 |
// Resolving it plants a vmtarget/vmindex in it, |
|
644 |
// which refers directly to JVM internals. |
|
645 |
void MethodHandles::expand_MemberName(Handle mname, int suppress, TRAPS) { |
|
646 |
assert(sun_dyn_MemberName::is_instance(mname()), ""); |
|
647 |
oop vmtarget = sun_dyn_MemberName::vmtarget(mname()); |
|
648 |
int vmindex = sun_dyn_MemberName::vmindex(mname()); |
|
649 |
if (vmtarget == NULL || vmindex == VM_INDEX_UNINITIALIZED) { |
|
650 |
THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "nothing to expand"); |
|
651 |
} |
|
652 |
||
653 |
bool have_defc = (sun_dyn_MemberName::clazz(mname()) != NULL); |
|
654 |
bool have_name = (sun_dyn_MemberName::name(mname()) != NULL); |
|
655 |
bool have_type = (sun_dyn_MemberName::type(mname()) != NULL); |
|
656 |
int flags = sun_dyn_MemberName::flags(mname()); |
|
657 |
||
658 |
if (suppress != 0) { |
|
659 |
if (suppress & _suppress_defc) have_defc = true; |
|
660 |
if (suppress & _suppress_name) have_name = true; |
|
661 |
if (suppress & _suppress_type) have_type = true; |
|
662 |
} |
|
663 |
||
664 |
if (have_defc && have_name && have_type) return; // nothing needed |
|
665 |
||
666 |
switch (flags & ALL_KINDS) { |
|
667 |
case IS_METHOD: |
|
668 |
case IS_CONSTRUCTOR: |
|
669 |
{ |
|
670 |
klassOop receiver_limit = NULL; |
|
671 |
int decode_flags = 0; |
|
672 |
methodHandle m(THREAD, decode_vmtarget(vmtarget, vmindex, NULL, |
|
673 |
receiver_limit, decode_flags)); |
|
674 |
if (m.is_null()) break; |
|
675 |
if (!have_defc) { |
|
676 |
klassOop defc = m->method_holder(); |
|
677 |
if (receiver_limit != NULL && receiver_limit != defc |
|
678 |
&& Klass::cast(receiver_limit)->is_subtype_of(defc)) |
|
679 |
defc = receiver_limit; |
|
680 |
sun_dyn_MemberName::set_clazz(mname(), Klass::cast(defc)->java_mirror()); |
|
681 |
} |
|
682 |
if (!have_name) { |
|
683 |
//not java_lang_String::create_from_symbol; let's intern member names |
|
684 |
Handle name = StringTable::intern(m->name(), CHECK); |
|
685 |
sun_dyn_MemberName::set_name(mname(), name()); |
|
686 |
} |
|
687 |
if (!have_type) { |
|
688 |
Handle type = java_lang_String::create_from_symbol(m->signature(), CHECK); |
|
689 |
sun_dyn_MemberName::set_type(mname(), type()); |
|
690 |
} |
|
691 |
return; |
|
692 |
} |
|
693 |
case IS_FIELD: |
|
694 |
{ |
|
695 |
// This is taken from LinkResolver::resolve_field, sans access checks. |
|
696 |
if (!vmtarget->is_klass()) break; |
|
697 |
if (!Klass::cast((klassOop) vmtarget)->oop_is_instance()) break; |
|
698 |
instanceKlassHandle defc(THREAD, (klassOop) vmtarget); |
|
699 |
bool is_static = ((flags & JVM_ACC_STATIC) != 0); |
|
700 |
fieldDescriptor fd; // find_field initializes fd if found |
|
701 |
if (!defc->find_field_from_offset(vmindex, is_static, &fd)) |
|
702 |
break; // cannot expand |
|
703 |
if (!have_defc) { |
|
704 |
sun_dyn_MemberName::set_clazz(mname(), defc->java_mirror()); |
|
705 |
} |
|
706 |
if (!have_name) { |
|
707 |
//not java_lang_String::create_from_symbol; let's intern member names |
|
708 |
Handle name = StringTable::intern(fd.name(), CHECK); |
|
709 |
sun_dyn_MemberName::set_name(mname(), name()); |
|
710 |
} |
|
711 |
if (!have_type) { |
|
712 |
Handle type = java_lang_String::create_from_symbol(fd.signature(), CHECK); |
|
713 |
sun_dyn_MemberName::set_type(mname(), type()); |
|
714 |
} |
|
715 |
return; |
|
716 |
} |
|
717 |
} |
|
718 |
THROW_MSG(vmSymbols::java_lang_InternalError(), "unrecognized MemberName format"); |
|
719 |
} |
|
720 |
||
721 |
int MethodHandles::find_MemberNames(klassOop k, |
|
722 |
symbolOop name, symbolOop sig, |
|
723 |
int mflags, klassOop caller, |
|
724 |
int skip, objArrayOop results) { |
|
725 |
DEBUG_ONLY(No_Safepoint_Verifier nsv); |
|
726 |
// this code contains no safepoints! |
|
727 |
||
728 |
// %%% take caller into account! |
|
729 |
||
730 |
if (k == NULL || !Klass::cast(k)->oop_is_instance()) return -1; |
|
731 |
||
732 |
int rfill = 0, rlimit = results->length(), rskip = skip; |
|
733 |
// overflow measurement: |
|
734 |
int overflow = 0, overflow_limit = MAX2(1000, rlimit); |
|
735 |
||
736 |
int match_flags = mflags; |
|
737 |
bool search_superc = ((match_flags & SEARCH_SUPERCLASSES) != 0); |
|
738 |
bool search_intfc = ((match_flags & SEARCH_INTERFACES) != 0); |
|
739 |
bool local_only = !(search_superc | search_intfc); |
|
740 |
bool classes_only = false; |
|
741 |
||
742 |
if (name != NULL) { |
|
743 |
if (name->utf8_length() == 0) return 0; // a match is not possible |
|
744 |
} |
|
745 |
if (sig != NULL) { |
|
746 |
if (sig->utf8_length() == 0) return 0; // a match is not possible |
|
747 |
if (sig->byte_at(0) == '(') |
|
748 |
match_flags &= ~(IS_FIELD | IS_TYPE); |
|
749 |
else |
|
750 |
match_flags &= ~(IS_CONSTRUCTOR | IS_METHOD); |
|
751 |
} |
|
752 |
||
753 |
if ((match_flags & IS_TYPE) != 0) { |
|
754 |
// NYI, and Core Reflection works quite well for this query |
|
755 |
} |
|
756 |
||
757 |
if ((match_flags & IS_FIELD) != 0) { |
|
758 |
for (FieldStream st(k, local_only, !search_intfc); !st.eos(); st.next()) { |
|
759 |
if (name != NULL && st.name() != name) |
|
760 |
continue; |
|
761 |
if (sig != NULL && st.signature() != sig) |
|
762 |
continue; |
|
763 |
// passed the filters |
|
764 |
if (rskip > 0) { |
|
765 |
--rskip; |
|
766 |
} else if (rfill < rlimit) { |
|
767 |
oop result = results->obj_at(rfill++); |
|
768 |
if (!sun_dyn_MemberName::is_instance(result)) |
|
769 |
return -99; // caller bug! |
|
770 |
MethodHandles::init_MemberName(result, st.klass()->as_klassOop(), st.access_flags(), st.offset()); |
|
771 |
} else if (++overflow >= overflow_limit) { |
|
772 |
match_flags = 0; break; // got tired of looking at overflow |
|
773 |
} |
|
774 |
} |
|
775 |
} |
|
776 |
||
777 |
if ((match_flags & (IS_METHOD | IS_CONSTRUCTOR)) != 0) { |
|
778 |
// watch out for these guys: |
|
779 |
symbolOop init_name = vmSymbols::object_initializer_name(); |
|
780 |
symbolOop clinit_name = vmSymbols::class_initializer_name(); |
|
781 |
if (name == clinit_name) clinit_name = NULL; // hack for exposing <clinit> |
|
782 |
bool negate_name_test = false; |
|
783 |
// fix name so that it captures the intention of IS_CONSTRUCTOR |
|
784 |
if (!(match_flags & IS_METHOD)) { |
|
785 |
// constructors only |
|
786 |
if (name == NULL) { |
|
787 |
name = init_name; |
|
788 |
} else if (name != init_name) { |
|
789 |
return 0; // no constructors of this method name |
|
790 |
} |
|
791 |
} else if (!(match_flags & IS_CONSTRUCTOR)) { |
|
792 |
// methods only |
|
793 |
if (name == NULL) { |
|
794 |
name = init_name; |
|
795 |
negate_name_test = true; // if we see the name, we *omit* the entry |
|
796 |
} else if (name == init_name) { |
|
797 |
return 0; // no methods of this constructor name |
|
798 |
} |
|
799 |
} else { |
|
800 |
// caller will accept either sort; no need to adjust name |
|
801 |
} |
|
802 |
for (MethodStream st(k, local_only, !search_intfc); !st.eos(); st.next()) { |
|
803 |
methodOop m = st.method(); |
|
804 |
symbolOop m_name = m->name(); |
|
805 |
if (m_name == clinit_name) |
|
806 |
continue; |
|
807 |
if (name != NULL && ((m_name != name) ^ negate_name_test)) |
|
808 |
continue; |
|
809 |
if (sig != NULL && m->signature() != sig) |
|
810 |
continue; |
|
811 |
// passed the filters |
|
812 |
if (rskip > 0) { |
|
813 |
--rskip; |
|
814 |
} else if (rfill < rlimit) { |
|
815 |
oop result = results->obj_at(rfill++); |
|
816 |
if (!sun_dyn_MemberName::is_instance(result)) |
|
817 |
return -99; // caller bug! |
|
818 |
MethodHandles::init_MemberName(result, m, true); |
|
819 |
} else if (++overflow >= overflow_limit) { |
|
820 |
match_flags = 0; break; // got tired of looking at overflow |
|
821 |
} |
|
822 |
} |
|
823 |
} |
|
824 |
||
825 |
// return number of elements we at leasted wanted to initialize |
|
826 |
return rfill + overflow; |
|
827 |
} |
|
828 |
||
829 |
||
5420
586d3988e72b
6939134: JSR 292 adjustments to method handle invocation
jrose
parents:
5050
diff
changeset
|
830 |
// 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
|
831 |
// Throw IAE if not |
586d3988e72b
6939134: JSR 292 adjustments to method handle invocation
jrose
parents:
5050
diff
changeset
|
832 |
instanceKlassHandle MethodHandles::resolve_instance_klass(oop java_mirror_oop, TRAPS) { |
586d3988e72b
6939134: JSR 292 adjustments to method handle invocation
jrose
parents:
5050
diff
changeset
|
833 |
instanceKlassHandle empty; |
586d3988e72b
6939134: JSR 292 adjustments to method handle invocation
jrose
parents:
5050
diff
changeset
|
834 |
klassOop caller = NULL; |
586d3988e72b
6939134: JSR 292 adjustments to method handle invocation
jrose
parents:
5050
diff
changeset
|
835 |
if (java_lang_Class::is_instance(java_mirror_oop)) { |
586d3988e72b
6939134: JSR 292 adjustments to method handle invocation
jrose
parents:
5050
diff
changeset
|
836 |
caller = java_lang_Class::as_klassOop(java_mirror_oop); |
586d3988e72b
6939134: JSR 292 adjustments to method handle invocation
jrose
parents:
5050
diff
changeset
|
837 |
} |
586d3988e72b
6939134: JSR 292 adjustments to method handle invocation
jrose
parents:
5050
diff
changeset
|
838 |
if (caller == NULL || !Klass::cast(caller)->oop_is_instance()) { |
586d3988e72b
6939134: JSR 292 adjustments to method handle invocation
jrose
parents:
5050
diff
changeset
|
839 |
THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), "not a class", empty); |
586d3988e72b
6939134: JSR 292 adjustments to method handle invocation
jrose
parents:
5050
diff
changeset
|
840 |
} |
586d3988e72b
6939134: JSR 292 adjustments to method handle invocation
jrose
parents:
5050
diff
changeset
|
841 |
return instanceKlassHandle(THREAD, caller); |
586d3988e72b
6939134: JSR 292 adjustments to method handle invocation
jrose
parents:
5050
diff
changeset
|
842 |
} |
586d3988e72b
6939134: JSR 292 adjustments to method handle invocation
jrose
parents:
5050
diff
changeset
|
843 |
|
2534 | 844 |
|
845 |
||
846 |
// Decode the vmtarget field of a method handle. |
|
847 |
// Sanitize out methodOops, klassOops, and any other non-Java data. |
|
848 |
// This is for debugging and reflection. |
|
849 |
oop MethodHandles::encode_target(Handle mh, int format, TRAPS) { |
|
850 |
assert(java_dyn_MethodHandle::is_instance(mh()), "must be a MH"); |
|
851 |
if (format == ETF_HANDLE_OR_METHOD_NAME) { |
|
852 |
oop target = java_dyn_MethodHandle::vmtarget(mh()); |
|
853 |
if (target == NULL) { |
|
854 |
return NULL; // unformed MH |
|
855 |
} |
|
856 |
klassOop tklass = target->klass(); |
|
4571 | 857 |
if (Klass::cast(tklass)->is_subclass_of(SystemDictionary::Object_klass())) { |
2534 | 858 |
return target; // target is another MH (or something else?) |
859 |
} |
|
860 |
} |
|
861 |
if (format == ETF_DIRECT_HANDLE) { |
|
862 |
oop target = mh(); |
|
863 |
for (;;) { |
|
864 |
if (target->klass() == SystemDictionary::DirectMethodHandle_klass()) { |
|
865 |
return target; |
|
866 |
} |
|
867 |
if (!java_dyn_MethodHandle::is_instance(target)){ |
|
868 |
return NULL; // unformed MH |
|
869 |
} |
|
870 |
target = java_dyn_MethodHandle::vmtarget(target); |
|
871 |
} |
|
872 |
} |
|
873 |
// cases of metadata in MH.vmtarget: |
|
874 |
// - AMH can have methodOop for static invoke with bound receiver |
|
875 |
// - DMH can have methodOop for static invoke (on variable receiver) |
|
876 |
// - DMH can have klassOop for dispatched (non-static) invoke |
|
877 |
klassOop receiver_limit = NULL; |
|
878 |
int decode_flags = 0; |
|
879 |
methodOop m = decode_MethodHandle(mh(), receiver_limit, decode_flags); |
|
880 |
if (m == NULL) return NULL; |
|
881 |
switch (format) { |
|
882 |
case ETF_REFLECT_METHOD: |
|
883 |
// same as jni_ToReflectedMethod: |
|
884 |
if (m->is_initializer()) { |
|
885 |
return Reflection::new_constructor(m, THREAD); |
|
886 |
} else { |
|
887 |
return Reflection::new_method(m, UseNewReflection, false, THREAD); |
|
888 |
} |
|
889 |
||
890 |
case ETF_HANDLE_OR_METHOD_NAME: // method, not handle |
|
891 |
case ETF_METHOD_NAME: |
|
892 |
{ |
|
893 |
if (SystemDictionary::MemberName_klass() == NULL) break; |
|
894 |
instanceKlassHandle mname_klass(THREAD, SystemDictionary::MemberName_klass()); |
|
895 |
mname_klass->initialize(CHECK_NULL); |
|
896 |
Handle mname = mname_klass->allocate_instance_handle(CHECK_NULL); |
|
897 |
sun_dyn_MemberName::set_vmindex(mname(), VM_INDEX_UNINITIALIZED); |
|
898 |
bool do_dispatch = ((decode_flags & MethodHandles::_dmf_does_dispatch) != 0); |
|
899 |
init_MemberName(mname(), m, do_dispatch); |
|
900 |
expand_MemberName(mname, 0, CHECK_NULL); |
|
901 |
return mname(); |
|
902 |
} |
|
903 |
} |
|
904 |
||
905 |
// Unknown format code. |
|
906 |
char msg[50]; |
|
907 |
jio_snprintf(msg, sizeof(msg), "unknown getTarget format=%d", format); |
|
908 |
THROW_MSG_NULL(vmSymbols::java_lang_IllegalArgumentException(), msg); |
|
909 |
} |
|
910 |
||
4094
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
911 |
static const char* always_null_names[] = { |
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
912 |
"java/lang/Void", |
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
913 |
"java/lang/Null", |
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
914 |
//"java/lang/Nothing", |
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
915 |
"sun/dyn/empty/Empty", |
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
916 |
NULL |
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
917 |
}; |
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
918 |
|
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
919 |
static bool is_always_null_type(klassOop klass) { |
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
920 |
if (!Klass::cast(klass)->oop_is_instance()) return false; |
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
921 |
instanceKlass* ik = instanceKlass::cast(klass); |
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
922 |
// Must be on the boot class path: |
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
923 |
if (ik->class_loader() != NULL) return false; |
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
924 |
// Check the name. |
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
925 |
symbolOop name = ik->name(); |
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
926 |
for (int i = 0; ; i++) { |
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
927 |
const char* test_name = always_null_names[i]; |
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
928 |
if (test_name == NULL) break; |
4567
7fc02fbe5c7a
6893268: additional dynamic language related optimizations in C2
twisti
parents:
4429
diff
changeset
|
929 |
if (name->equals(test_name)) |
4094
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
930 |
return true; |
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
931 |
} |
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
932 |
return false; |
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
933 |
} |
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
934 |
|
2534 | 935 |
bool MethodHandles::class_cast_needed(klassOop src, klassOop dst) { |
4571 | 936 |
if (src == dst || dst == SystemDictionary::Object_klass()) |
2534 | 937 |
return false; // quickest checks |
938 |
Klass* srck = Klass::cast(src); |
|
939 |
Klass* dstk = Klass::cast(dst); |
|
940 |
if (dstk->is_interface()) { |
|
941 |
// interface receivers can safely be viewed as untyped, |
|
942 |
// because interface calls always include a dynamic check |
|
4571 | 943 |
//dstk = Klass::cast(SystemDictionary::Object_klass()); |
2534 | 944 |
return false; |
945 |
} |
|
946 |
if (srck->is_interface()) { |
|
947 |
// interface arguments must be viewed as untyped |
|
4571 | 948 |
//srck = Klass::cast(SystemDictionary::Object_klass()); |
2534 | 949 |
return true; |
950 |
} |
|
4094
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
951 |
if (is_always_null_type(src)) { |
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
952 |
// some source types are known to be never instantiated; |
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
953 |
// they represent references which are always null |
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
954 |
// such null references never fail to convert safely |
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
955 |
return false; |
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
956 |
} |
2534 | 957 |
return !srck->is_subclass_of(dstk->as_klassOop()); |
958 |
} |
|
959 |
||
960 |
static oop object_java_mirror() { |
|
4571 | 961 |
return Klass::cast(SystemDictionary::Object_klass())->java_mirror(); |
2534 | 962 |
} |
963 |
||
964 |
bool MethodHandles::same_basic_type_for_arguments(BasicType src, |
|
965 |
BasicType dst, |
|
4094
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
966 |
bool raw, |
2534 | 967 |
bool for_return) { |
4094
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
968 |
if (for_return) { |
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
969 |
// return values can always be forgotten: |
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
970 |
if (dst == T_VOID) return true; |
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
971 |
if (src == T_VOID) return raw && (dst == T_INT); |
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
972 |
// 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
|
973 |
// 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
|
974 |
} |
2534 | 975 |
assert(src != T_VOID && dst != T_VOID, "should not be here"); |
976 |
if (src == dst) return true; |
|
977 |
if (type2size[src] != type2size[dst]) return false; |
|
978 |
// allow reinterpretation casts for integral widening |
|
979 |
if (is_subword_type(src)) { // subwords can fit in int or other subwords |
|
980 |
if (dst == T_INT) // any subword fits in an int |
|
981 |
return true; |
|
982 |
if (src == T_BOOLEAN) // boolean fits in any subword |
|
983 |
return is_subword_type(dst); |
|
984 |
if (src == T_BYTE && dst == T_SHORT) |
|
985 |
return true; // remaining case: byte fits in short |
|
986 |
} |
|
987 |
// allow float/fixed reinterpretation casts |
|
988 |
if (src == T_FLOAT) return dst == T_INT; |
|
989 |
if (src == T_INT) return dst == T_FLOAT; |
|
990 |
if (src == T_DOUBLE) return dst == T_LONG; |
|
991 |
if (src == T_LONG) return dst == T_DOUBLE; |
|
992 |
return false; |
|
993 |
} |
|
994 |
||
995 |
const char* MethodHandles::check_method_receiver(methodOop m, |
|
996 |
klassOop passed_recv_type) { |
|
997 |
assert(!m->is_static(), "caller resp."); |
|
998 |
if (passed_recv_type == NULL) |
|
999 |
return "receiver type is primitive"; |
|
1000 |
if (class_cast_needed(passed_recv_type, m->method_holder())) { |
|
1001 |
Klass* formal = Klass::cast(m->method_holder()); |
|
1002 |
return SharedRuntime::generate_class_cast_message("receiver type", |
|
1003 |
formal->external_name()); |
|
1004 |
} |
|
1005 |
return NULL; // checks passed |
|
1006 |
} |
|
1007 |
||
1008 |
// Verify that m's signature can be called type-safely by a method handle |
|
1009 |
// of the given method type 'mtype'. |
|
1010 |
// It takes a TRAPS argument because it must perform symbol lookups. |
|
1011 |
void MethodHandles::verify_method_signature(methodHandle m, |
|
1012 |
Handle mtype, |
|
1013 |
int first_ptype_pos, |
|
1014 |
KlassHandle insert_ptype, |
|
1015 |
TRAPS) { |
|
1016 |
objArrayHandle ptypes(THREAD, java_dyn_MethodType::ptypes(mtype())); |
|
1017 |
int pnum = first_ptype_pos; |
|
1018 |
int pmax = ptypes->length(); |
|
1019 |
int mnum = 0; // method argument |
|
1020 |
const char* err = NULL; |
|
1021 |
for (SignatureStream ss(m->signature()); !ss.is_done(); ss.next()) { |
|
1022 |
oop ptype_oop = NULL; |
|
1023 |
if (ss.at_return_type()) { |
|
1024 |
if (pnum != pmax) |
|
1025 |
{ err = "too many arguments"; break; } |
|
1026 |
ptype_oop = java_dyn_MethodType::rtype(mtype()); |
|
1027 |
} else { |
|
1028 |
if (pnum >= pmax) |
|
1029 |
{ err = "not enough arguments"; break; } |
|
1030 |
if (pnum >= 0) |
|
1031 |
ptype_oop = ptypes->obj_at(pnum); |
|
1032 |
else if (insert_ptype.is_null()) |
|
1033 |
ptype_oop = NULL; |
|
1034 |
else |
|
1035 |
ptype_oop = insert_ptype->java_mirror(); |
|
1036 |
pnum += 1; |
|
1037 |
mnum += 1; |
|
1038 |
} |
|
5421
e294db54fc0d
6939196: method handle signatures off the boot class path get linkage errors
jrose
parents:
5420
diff
changeset
|
1039 |
klassOop pklass = NULL; |
e294db54fc0d
6939196: method handle signatures off the boot class path get linkage errors
jrose
parents:
5420
diff
changeset
|
1040 |
BasicType ptype = T_OBJECT; |
e294db54fc0d
6939196: method handle signatures off the boot class path get linkage errors
jrose
parents:
5420
diff
changeset
|
1041 |
if (ptype_oop != NULL) |
e294db54fc0d
6939196: method handle signatures off the boot class path get linkage errors
jrose
parents:
5420
diff
changeset
|
1042 |
ptype = java_lang_Class::as_BasicType(ptype_oop, &pklass); |
e294db54fc0d
6939196: method handle signatures off the boot class path get linkage errors
jrose
parents:
5420
diff
changeset
|
1043 |
else |
e294db54fc0d
6939196: method handle signatures off the boot class path get linkage errors
jrose
parents:
5420
diff
changeset
|
1044 |
// null does not match any non-reference; use Object to report the error |
e294db54fc0d
6939196: method handle signatures off the boot class path get linkage errors
jrose
parents:
5420
diff
changeset
|
1045 |
pklass = SystemDictionary::Object_klass(); |
2534 | 1046 |
klassOop mklass = NULL; |
1047 |
BasicType mtype = ss.type(); |
|
1048 |
if (mtype == T_ARRAY) mtype = T_OBJECT; // fold all refs to T_OBJECT |
|
1049 |
if (mtype == T_OBJECT) { |
|
1050 |
if (ptype_oop == NULL) { |
|
1051 |
// null matches any reference |
|
1052 |
continue; |
|
1053 |
} |
|
5421
e294db54fc0d
6939196: method handle signatures off the boot class path get linkage errors
jrose
parents:
5420
diff
changeset
|
1054 |
KlassHandle pklass_handle(THREAD, pklass); pklass = NULL; |
2534 | 1055 |
// If we fail to resolve types at this point, we will throw an error. |
1056 |
symbolOop name_oop = ss.as_symbol(CHECK); |
|
1057 |
symbolHandle name(THREAD, name_oop); |
|
1058 |
instanceKlass* mk = instanceKlass::cast(m->method_holder()); |
|
1059 |
Handle loader(THREAD, mk->class_loader()); |
|
1060 |
Handle domain(THREAD, mk->protection_domain()); |
|
5421
e294db54fc0d
6939196: method handle signatures off the boot class path get linkage errors
jrose
parents:
5420
diff
changeset
|
1061 |
mklass = SystemDictionary::resolve_or_null(name, loader, domain, CHECK); |
e294db54fc0d
6939196: method handle signatures off the boot class path get linkage errors
jrose
parents:
5420
diff
changeset
|
1062 |
pklass = pklass_handle(); |
e294db54fc0d
6939196: method handle signatures off the boot class path get linkage errors
jrose
parents:
5420
diff
changeset
|
1063 |
if (mklass == NULL && pklass != NULL && |
e294db54fc0d
6939196: method handle signatures off the boot class path get linkage errors
jrose
parents:
5420
diff
changeset
|
1064 |
Klass::cast(pklass)->name() == name() && |
e294db54fc0d
6939196: method handle signatures off the boot class path get linkage errors
jrose
parents:
5420
diff
changeset
|
1065 |
m->is_method_handle_invoke()) { |
e294db54fc0d
6939196: method handle signatures off the boot class path get linkage errors
jrose
parents:
5420
diff
changeset
|
1066 |
// Assume a match. We can't really decode the signature of MH.invoke*. |
e294db54fc0d
6939196: method handle signatures off the boot class path get linkage errors
jrose
parents:
5420
diff
changeset
|
1067 |
continue; |
e294db54fc0d
6939196: method handle signatures off the boot class path get linkage errors
jrose
parents:
5420
diff
changeset
|
1068 |
} |
2534 | 1069 |
} |
1070 |
if (!ss.at_return_type()) { |
|
1071 |
err = check_argument_type_change(ptype, pklass, mtype, mklass, mnum); |
|
1072 |
} else { |
|
1073 |
err = check_return_type_change(mtype, mklass, ptype, pklass); // note reversal! |
|
1074 |
} |
|
1075 |
if (err != NULL) break; |
|
1076 |
} |
|
1077 |
||
1078 |
if (err != NULL) { |
|
1079 |
THROW_MSG(vmSymbols::java_lang_InternalError(), err); |
|
1080 |
} |
|
1081 |
} |
|
1082 |
||
1083 |
// Main routine for verifying the MethodHandle.type of a proposed |
|
1084 |
// direct or bound-direct method handle. |
|
1085 |
void MethodHandles::verify_method_type(methodHandle m, |
|
1086 |
Handle mtype, |
|
1087 |
bool has_bound_recv, |
|
1088 |
KlassHandle bound_recv_type, |
|
1089 |
TRAPS) { |
|
1090 |
bool m_needs_receiver = !m->is_static(); |
|
1091 |
||
1092 |
const char* err = NULL; |
|
1093 |
||
1094 |
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
|
1095 |
if (has_bound_recv) { |
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
1096 |
first_ptype_pos -= 1; // ptypes do not include the bound argument; start earlier in them |
2534 | 1097 |
if (m_needs_receiver && bound_recv_type.is_null()) |
1098 |
{ err = "bound receiver is not an object"; goto die; } |
|
1099 |
} |
|
1100 |
||
1101 |
if (m_needs_receiver && err == NULL) { |
|
1102 |
objArrayOop ptypes = java_dyn_MethodType::ptypes(mtype()); |
|
1103 |
if (ptypes->length() < first_ptype_pos) |
|
1104 |
{ err = "receiver argument is missing"; goto die; } |
|
4094
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diff
changeset
|
1105 |
if (has_bound_recv) |
2534 | 1106 |
err = check_method_receiver(m(), bound_recv_type->as_klassOop()); |
1107 |
else |
|
4094
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diff
changeset
|
1108 |
err = check_method_receiver(m(), java_lang_Class::as_klassOop(ptypes->obj_at(first_ptype_pos-1))); |
2534 | 1109 |
if (err != NULL) goto die; |
1110 |
} |
|
1111 |
||
1112 |
// Check the other arguments for mistypes. |
|
1113 |
verify_method_signature(m, mtype, first_ptype_pos, bound_recv_type, CHECK); |
|
1114 |
return; |
|
1115 |
||
1116 |
die: |
|
1117 |
THROW_MSG(vmSymbols::java_lang_InternalError(), err); |
|
1118 |
} |
|
1119 |
||
1120 |
void MethodHandles::verify_vmslots(Handle mh, TRAPS) { |
|
1121 |
// Verify vmslots. |
|
1122 |
int check_slots = argument_slot_count(java_dyn_MethodHandle::type(mh())); |
|
1123 |
if (java_dyn_MethodHandle::vmslots(mh()) != check_slots) { |
|
1124 |
THROW_MSG(vmSymbols::java_lang_InternalError(), "bad vmslots in BMH"); |
|
1125 |
} |
|
1126 |
} |
|
1127 |
||
1128 |
void MethodHandles::verify_vmargslot(Handle mh, int argnum, int argslot, TRAPS) { |
|
1129 |
// Verify that argslot points at the given argnum. |
|
1130 |
int check_slot = argument_slot(java_dyn_MethodHandle::type(mh()), argnum); |
|
1131 |
if (argslot != check_slot || argslot < 0) { |
|
1132 |
const char* fmt = "for argnum of %d, vmargslot is %d, should be %d"; |
|
1133 |
size_t msglen = strlen(fmt) + 3*11 + 1; |
|
1134 |
char* msg = NEW_RESOURCE_ARRAY(char, msglen); |
|
1135 |
jio_snprintf(msg, msglen, fmt, argnum, argslot, check_slot); |
|
1136 |
THROW_MSG(vmSymbols::java_lang_InternalError(), msg); |
|
1137 |
} |
|
1138 |
} |
|
1139 |
||
1140 |
// Verify the correspondence between two method types. |
|
1141 |
// Apart from the advertised changes, caller method type X must |
|
1142 |
// be able to invoke the callee method Y type with no violations |
|
1143 |
// of type integrity. |
|
1144 |
// Return NULL if all is well, else a short error message. |
|
1145 |
const char* MethodHandles::check_method_type_change(oop src_mtype, int src_beg, int src_end, |
|
1146 |
int insert_argnum, oop insert_type, |
|
1147 |
int change_argnum, oop change_type, |
|
1148 |
int delete_argnum, |
|
4094
1f424b2b2171
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2570
diff
changeset
|
1149 |
oop dst_mtype, int dst_beg, int dst_end, |
1f424b2b2171
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jrose
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2570
diff
changeset
|
1150 |
bool raw) { |
2534 | 1151 |
objArrayOop src_ptypes = java_dyn_MethodType::ptypes(src_mtype); |
1152 |
objArrayOop dst_ptypes = java_dyn_MethodType::ptypes(dst_mtype); |
|
1153 |
||
1154 |
int src_max = src_ptypes->length(); |
|
1155 |
int dst_max = dst_ptypes->length(); |
|
1156 |
||
1157 |
if (src_end == -1) src_end = src_max; |
|
1158 |
if (dst_end == -1) dst_end = dst_max; |
|
1159 |
||
1160 |
assert(0 <= src_beg && src_beg <= src_end && src_end <= src_max, "oob"); |
|
1161 |
assert(0 <= dst_beg && dst_beg <= dst_end && dst_end <= dst_max, "oob"); |
|
1162 |
||
1163 |
// pending actions; set to -1 when done: |
|
1164 |
int ins_idx = insert_argnum, chg_idx = change_argnum, del_idx = delete_argnum; |
|
1165 |
||
1166 |
const char* err = NULL; |
|
1167 |
||
1168 |
// Walk along each array of parameter types, including a virtual |
|
1169 |
// NULL end marker at the end of each. |
|
1170 |
for (int src_idx = src_beg, dst_idx = dst_beg; |
|
1171 |
(src_idx <= src_end && dst_idx <= dst_end); |
|
1172 |
src_idx++, dst_idx++) { |
|
1173 |
oop src_type = (src_idx == src_end) ? oop(NULL) : src_ptypes->obj_at(src_idx); |
|
1174 |
oop dst_type = (dst_idx == dst_end) ? oop(NULL) : dst_ptypes->obj_at(dst_idx); |
|
1175 |
bool fix_null_src_type = false; |
|
1176 |
||
1177 |
// Perform requested edits. |
|
1178 |
if (ins_idx == src_idx) { |
|
1179 |
// note that the inserted guy is never affected by a change or deletion |
|
1180 |
ins_idx = -1; |
|
1181 |
src_type = insert_type; |
|
1182 |
fix_null_src_type = true; |
|
1183 |
--src_idx; // back up to process src type on next loop |
|
1184 |
src_idx = src_end; |
|
1185 |
} else { |
|
1186 |
// note that the changed guy can be immediately deleted |
|
1187 |
if (chg_idx == src_idx) { |
|
1188 |
chg_idx = -1; |
|
1189 |
assert(src_idx < src_end, "oob"); |
|
1190 |
src_type = change_type; |
|
1191 |
fix_null_src_type = true; |
|
1192 |
} |
|
1193 |
if (del_idx == src_idx) { |
|
1194 |
del_idx = -1; |
|
1195 |
assert(src_idx < src_end, "oob"); |
|
1196 |
--dst_idx; |
|
1197 |
continue; // rerun loop after skipping this position |
|
1198 |
} |
|
1199 |
} |
|
1200 |
||
1201 |
if (src_type == NULL && fix_null_src_type) |
|
1202 |
// explicit null in this case matches any dest reference |
|
1203 |
src_type = (java_lang_Class::is_primitive(dst_type) ? object_java_mirror() : dst_type); |
|
1204 |
||
1205 |
// Compare the two argument types. |
|
1206 |
if (src_type != dst_type) { |
|
1207 |
if (src_type == NULL) return "not enough arguments"; |
|
1208 |
if (dst_type == NULL) return "too many arguments"; |
|
4094
1f424b2b2171
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parents:
2570
diff
changeset
|
1209 |
err = check_argument_type_change(src_type, dst_type, dst_idx, raw); |
2534 | 1210 |
if (err != NULL) return err; |
1211 |
} |
|
1212 |
} |
|
1213 |
||
1214 |
// Now compare return types also. |
|
1215 |
oop src_rtype = java_dyn_MethodType::rtype(src_mtype); |
|
1216 |
oop dst_rtype = java_dyn_MethodType::rtype(dst_mtype); |
|
1217 |
if (src_rtype != dst_rtype) { |
|
4094
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diff
changeset
|
1218 |
err = check_return_type_change(dst_rtype, src_rtype, raw); // note reversal! |
2534 | 1219 |
if (err != NULL) return err; |
1220 |
} |
|
1221 |
||
1222 |
assert(err == NULL, ""); |
|
1223 |
return NULL; // all is well |
|
1224 |
} |
|
1225 |
||
1226 |
||
1227 |
const char* MethodHandles::check_argument_type_change(BasicType src_type, |
|
4094
1f424b2b2171
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2570
diff
changeset
|
1228 |
klassOop src_klass, |
1f424b2b2171
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jrose
parents:
2570
diff
changeset
|
1229 |
BasicType dst_type, |
1f424b2b2171
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jrose
parents:
2570
diff
changeset
|
1230 |
klassOop dst_klass, |
1f424b2b2171
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jrose
parents:
2570
diff
changeset
|
1231 |
int argnum, |
1f424b2b2171
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jrose
parents:
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diff
changeset
|
1232 |
bool raw) { |
2534 | 1233 |
const char* err = NULL; |
4094
1f424b2b2171
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jrose
parents:
2570
diff
changeset
|
1234 |
bool for_return = (argnum < 0); |
2534 | 1235 |
|
1236 |
// just in case: |
|
1237 |
if (src_type == T_ARRAY) src_type = T_OBJECT; |
|
1238 |
if (dst_type == T_ARRAY) dst_type = T_OBJECT; |
|
1239 |
||
1240 |
// Produce some nice messages if VerifyMethodHandles is turned on: |
|
4094
1f424b2b2171
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jrose
parents:
2570
diff
changeset
|
1241 |
if (!same_basic_type_for_arguments(src_type, dst_type, raw, for_return)) { |
2534 | 1242 |
if (src_type == T_OBJECT) { |
4094
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
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2570
diff
changeset
|
1243 |
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
|
1244 |
return NULL; // OK to convert a null pointer to a garbage int |
2534 | 1245 |
err = ((argnum >= 0) |
1246 |
? "type mismatch: passing a %s for method argument #%d, which expects primitive %s" |
|
1247 |
: "type mismatch: returning a %s, but caller expects primitive %s"); |
|
1248 |
} else if (dst_type == T_OBJECT) { |
|
4094
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
1249 |
err = ((argnum >= 0) |
2534 | 1250 |
? "type mismatch: passing a primitive %s for method argument #%d, which expects %s" |
1251 |
: "type mismatch: returning a primitive %s, but caller expects %s"); |
|
1252 |
} else { |
|
4094
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
1253 |
err = ((argnum >= 0) |
2534 | 1254 |
? "type mismatch: passing a %s for method argument #%d, which expects %s" |
1255 |
: "type mismatch: returning a %s, but caller expects %s"); |
|
1256 |
} |
|
4094
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
1257 |
} 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
|
1258 |
class_cast_needed(src_klass, dst_klass)) { |
2534 | 1259 |
if (!class_cast_needed(dst_klass, src_klass)) { |
4094
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
1260 |
if (raw) |
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
1261 |
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
|
1262 |
err = ((argnum >= 0) |
2534 | 1263 |
? "cast required: passing a %s for method argument #%d, which expects %s" |
1264 |
: "cast required: returning a %s, but caller expects %s"); |
|
1265 |
} else { |
|
4094
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
1266 |
err = ((argnum >= 0) |
2534 | 1267 |
? "reference mismatch: passing a %s for method argument #%d, which expects %s" |
1268 |
: "reference mismatch: returning a %s, but caller expects %s"); |
|
1269 |
} |
|
1270 |
} else { |
|
1271 |
// passed the obstacle course |
|
1272 |
return NULL; |
|
1273 |
} |
|
1274 |
||
1275 |
// format, format, format |
|
1276 |
const char* src_name = type2name(src_type); |
|
1277 |
const char* dst_name = type2name(dst_type); |
|
1278 |
if (src_type == T_OBJECT) src_name = Klass::cast(src_klass)->external_name(); |
|
1279 |
if (dst_type == T_OBJECT) dst_name = Klass::cast(dst_klass)->external_name(); |
|
1280 |
if (src_name == NULL) src_name = "unknown type"; |
|
1281 |
if (dst_name == NULL) dst_name = "unknown type"; |
|
1282 |
||
1283 |
size_t msglen = strlen(err) + strlen(src_name) + strlen(dst_name) + (argnum < 10 ? 1 : 11); |
|
1284 |
char* msg = NEW_RESOURCE_ARRAY(char, msglen + 1); |
|
1285 |
if (argnum >= 0) { |
|
1286 |
assert(strstr(err, "%d") != NULL, ""); |
|
1287 |
jio_snprintf(msg, msglen, err, src_name, argnum, dst_name); |
|
1288 |
} else { |
|
1289 |
assert(strstr(err, "%d") == NULL, ""); |
|
1290 |
jio_snprintf(msg, msglen, err, src_name, dst_name); |
|
1291 |
} |
|
1292 |
return msg; |
|
1293 |
} |
|
1294 |
||
1295 |
// Compute the depth within the stack of the given argument, i.e., |
|
1296 |
// the combined size of arguments to the right of the given argument. |
|
1297 |
// For the last argument (ptypes.length-1) this will be zero. |
|
1298 |
// For the first argument (0) this will be the size of all |
|
1299 |
// arguments but that one. For the special number -1, this |
|
1300 |
// will be the size of all arguments, including the first. |
|
1301 |
// If the argument is neither -1 nor a valid argument index, |
|
1302 |
// then return a negative number. Otherwise, the result |
|
1303 |
// is in the range [0..vmslots] inclusive. |
|
1304 |
int MethodHandles::argument_slot(oop method_type, int arg) { |
|
1305 |
objArrayOop ptypes = java_dyn_MethodType::ptypes(method_type); |
|
1306 |
int argslot = 0; |
|
1307 |
int len = ptypes->length(); |
|
1308 |
if (arg < -1 || arg >= len) return -99; |
|
1309 |
for (int i = len-1; i > arg; i--) { |
|
1310 |
BasicType bt = java_lang_Class::as_BasicType(ptypes->obj_at(i)); |
|
1311 |
argslot += type2size[bt]; |
|
1312 |
} |
|
1313 |
assert(argument_slot_to_argnum(method_type, argslot) == arg, "inverse works"); |
|
1314 |
return argslot; |
|
1315 |
} |
|
1316 |
||
1317 |
// Given a slot number, return the argument number. |
|
1318 |
int MethodHandles::argument_slot_to_argnum(oop method_type, int query_argslot) { |
|
1319 |
objArrayOop ptypes = java_dyn_MethodType::ptypes(method_type); |
|
1320 |
int argslot = 0; |
|
1321 |
int len = ptypes->length(); |
|
1322 |
for (int i = len-1; i >= 0; i--) { |
|
1323 |
if (query_argslot == argslot) return i; |
|
1324 |
BasicType bt = java_lang_Class::as_BasicType(ptypes->obj_at(i)); |
|
1325 |
argslot += type2size[bt]; |
|
1326 |
} |
|
1327 |
// return pseudo-arg deepest in stack: |
|
1328 |
if (query_argslot == argslot) return -1; |
|
1329 |
return -99; // oob slot, or splitting a double-slot arg |
|
1330 |
} |
|
1331 |
||
1332 |
methodHandle MethodHandles::dispatch_decoded_method(methodHandle m, |
|
1333 |
KlassHandle receiver_limit, |
|
1334 |
int decode_flags, |
|
1335 |
KlassHandle receiver_klass, |
|
1336 |
TRAPS) { |
|
1337 |
assert((decode_flags & ~_DMF_DIRECT_MASK) == 0, "must be direct method reference"); |
|
1338 |
assert((decode_flags & _dmf_has_receiver) != 0, "must have a receiver or first reference argument"); |
|
1339 |
||
1340 |
if (!m->is_static() && |
|
1341 |
(receiver_klass.is_null() || !receiver_klass->is_subtype_of(m->method_holder()))) |
|
1342 |
// given type does not match class of method, or receiver is null! |
|
1343 |
// caller should have checked this, but let's be extra careful... |
|
1344 |
return methodHandle(); |
|
1345 |
||
1346 |
if (receiver_limit.not_null() && |
|
1347 |
(receiver_klass.not_null() && !receiver_klass->is_subtype_of(receiver_limit()))) |
|
1348 |
// given type is not limited to the receiver type |
|
1349 |
// note that a null receiver can match any reference value, for a static method |
|
1350 |
return methodHandle(); |
|
1351 |
||
1352 |
if (!(decode_flags & MethodHandles::_dmf_does_dispatch)) { |
|
1353 |
// pre-dispatched or static method (null receiver is OK for static) |
|
1354 |
return m; |
|
1355 |
||
1356 |
} else if (receiver_klass.is_null()) { |
|
1357 |
// null receiver value; cannot dispatch |
|
1358 |
return methodHandle(); |
|
1359 |
||
1360 |
} else if (!(decode_flags & MethodHandles::_dmf_from_interface)) { |
|
1361 |
// perform virtual dispatch |
|
1362 |
int vtable_index = m->vtable_index(); |
|
1363 |
guarantee(vtable_index >= 0, "valid vtable index"); |
|
1364 |
||
1365 |
// receiver_klass might be an arrayKlassOop but all vtables start at |
|
1366 |
// the same place. The cast is to avoid virtual call and assertion. |
|
1367 |
// See also LinkResolver::runtime_resolve_virtual_method. |
|
1368 |
instanceKlass* inst = (instanceKlass*)Klass::cast(receiver_klass()); |
|
1369 |
DEBUG_ONLY(inst->verify_vtable_index(vtable_index)); |
|
1370 |
methodOop m_oop = inst->method_at_vtable(vtable_index); |
|
1371 |
return methodHandle(THREAD, m_oop); |
|
1372 |
||
1373 |
} else { |
|
1374 |
// perform interface dispatch |
|
1375 |
int itable_index = klassItable::compute_itable_index(m()); |
|
1376 |
guarantee(itable_index >= 0, "valid itable index"); |
|
1377 |
instanceKlass* inst = instanceKlass::cast(receiver_klass()); |
|
1378 |
methodOop m_oop = inst->method_at_itable(m->method_holder(), itable_index, THREAD); |
|
1379 |
return methodHandle(THREAD, m_oop); |
|
1380 |
} |
|
1381 |
} |
|
1382 |
||
1383 |
void MethodHandles::verify_DirectMethodHandle(Handle mh, methodHandle m, TRAPS) { |
|
1384 |
// Verify type. |
|
1385 |
Handle mtype(THREAD, java_dyn_MethodHandle::type(mh())); |
|
1386 |
verify_method_type(m, mtype, false, KlassHandle(), CHECK); |
|
1387 |
||
1388 |
// Verify vmslots. |
|
1389 |
if (java_dyn_MethodHandle::vmslots(mh()) != m->size_of_parameters()) { |
|
1390 |
THROW_MSG(vmSymbols::java_lang_InternalError(), "bad vmslots in DMH"); |
|
1391 |
} |
|
1392 |
} |
|
1393 |
||
1394 |
void MethodHandles::init_DirectMethodHandle(Handle mh, methodHandle m, bool do_dispatch, TRAPS) { |
|
1395 |
// Check arguments. |
|
1396 |
if (mh.is_null() || m.is_null() || |
|
1397 |
(!do_dispatch && m->is_abstract())) { |
|
1398 |
THROW(vmSymbols::java_lang_InternalError()); |
|
1399 |
} |
|
1400 |
||
1401 |
java_dyn_MethodHandle::init_vmslots(mh()); |
|
1402 |
||
1403 |
if (VerifyMethodHandles) { |
|
1404 |
// The privileged code which invokes this routine should not make |
|
1405 |
// a mistake about types, but it's better to verify. |
|
1406 |
verify_DirectMethodHandle(mh, m, CHECK); |
|
1407 |
} |
|
1408 |
||
1409 |
// Finally, after safety checks are done, link to the target method. |
|
1410 |
// We will follow the same path as the latter part of |
|
1411 |
// InterpreterRuntime::resolve_invoke(), which first finds the method |
|
1412 |
// and then decides how to populate the constant pool cache entry |
|
1413 |
// that links the interpreter calls to the method. We need the same |
|
1414 |
// bits, and will use the same calling sequence code. |
|
1415 |
||
1416 |
int vmindex = methodOopDesc::garbage_vtable_index; |
|
1417 |
oop vmtarget = NULL; |
|
1418 |
||
1419 |
instanceKlass::cast(m->method_holder())->link_class(CHECK); |
|
1420 |
||
1421 |
MethodHandleEntry* me = NULL; |
|
1422 |
if (do_dispatch && Klass::cast(m->method_holder())->is_interface()) { |
|
1423 |
// We are simulating an invokeinterface instruction. |
|
1424 |
// (We might also be simulating an invokevirtual on a miranda method, |
|
1425 |
// but it is safe to treat it as an invokeinterface.) |
|
1426 |
assert(!m->can_be_statically_bound(), "no final methods on interfaces"); |
|
1427 |
vmindex = klassItable::compute_itable_index(m()); |
|
1428 |
assert(vmindex >= 0, "(>=0) == do_dispatch"); |
|
1429 |
// Set up same bits as ConstantPoolCacheEntry::set_interface_call(). |
|
1430 |
vmtarget = m->method_holder(); // the interface |
|
1431 |
me = MethodHandles::entry(MethodHandles::_invokeinterface_mh); |
|
1432 |
} else if (!do_dispatch || m->can_be_statically_bound()) { |
|
1433 |
// We are simulating an invokestatic or invokespecial instruction. |
|
1434 |
// Set up the method pointer, just like ConstantPoolCacheEntry::set_method(). |
|
1435 |
vmtarget = m(); |
|
1436 |
// this does not help dispatch, but it will make it possible to parse this MH: |
|
1437 |
vmindex = methodOopDesc::nonvirtual_vtable_index; |
|
1438 |
assert(vmindex < 0, "(>=0) == do_dispatch"); |
|
1439 |
if (!m->is_static()) { |
|
1440 |
me = MethodHandles::entry(MethodHandles::_invokespecial_mh); |
|
1441 |
} else { |
|
1442 |
me = MethodHandles::entry(MethodHandles::_invokestatic_mh); |
|
1443 |
// Part of the semantics of a static call is an initialization barrier. |
|
1444 |
// For a DMH, it is done now, when the handle is created. |
|
1445 |
Klass* k = Klass::cast(m->method_holder()); |
|
1446 |
if (k->should_be_initialized()) { |
|
1447 |
k->initialize(CHECK); |
|
1448 |
} |
|
1449 |
} |
|
1450 |
} else { |
|
1451 |
// We are simulating an invokevirtual instruction. |
|
1452 |
// Set up the vtable index, just like ConstantPoolCacheEntry::set_method(). |
|
1453 |
// The key logic is LinkResolver::runtime_resolve_virtual_method. |
|
1454 |
vmindex = m->vtable_index(); |
|
1455 |
vmtarget = m->method_holder(); |
|
1456 |
me = MethodHandles::entry(MethodHandles::_invokevirtual_mh); |
|
1457 |
} |
|
1458 |
||
1459 |
if (me == NULL) { THROW(vmSymbols::java_lang_InternalError()); } |
|
1460 |
||
1461 |
sun_dyn_DirectMethodHandle::set_vmtarget(mh(), vmtarget); |
|
1462 |
sun_dyn_DirectMethodHandle::set_vmindex(mh(), vmindex); |
|
1463 |
DEBUG_ONLY(int flags; klassOop rlimit); |
|
1464 |
assert(MethodHandles::decode_method(mh(), rlimit, flags) == m(), |
|
1465 |
"properly stored for later decoding"); |
|
1466 |
DEBUG_ONLY(bool actual_do_dispatch = ((flags & _dmf_does_dispatch) != 0)); |
|
1467 |
assert(!(actual_do_dispatch && !do_dispatch), |
|
1468 |
"do not perform dispatch if !do_dispatch specified"); |
|
1469 |
assert(actual_do_dispatch == (vmindex >= 0), "proper later decoding of do_dispatch"); |
|
1470 |
assert(decode_MethodHandle_stack_pushes(mh()) == 0, "DMH does not move stack"); |
|
1471 |
||
1472 |
// Done! |
|
1473 |
java_dyn_MethodHandle::set_vmentry(mh(), me); |
|
1474 |
} |
|
1475 |
||
1476 |
void MethodHandles::verify_BoundMethodHandle_with_receiver(Handle mh, |
|
1477 |
methodHandle m, |
|
1478 |
TRAPS) { |
|
1479 |
// Verify type. |
|
1480 |
oop receiver = sun_dyn_BoundMethodHandle::argument(mh()); |
|
1481 |
Handle mtype(THREAD, java_dyn_MethodHandle::type(mh())); |
|
1482 |
KlassHandle bound_recv_type; |
|
1483 |
if (receiver != NULL) bound_recv_type = KlassHandle(THREAD, receiver->klass()); |
|
1484 |
verify_method_type(m, mtype, true, bound_recv_type, CHECK); |
|
1485 |
||
1486 |
int receiver_pos = m->size_of_parameters() - 1; |
|
1487 |
||
1488 |
// Verify MH.vmargslot, which should point at the bound receiver. |
|
1489 |
verify_vmargslot(mh, -1, sun_dyn_BoundMethodHandle::vmargslot(mh()), CHECK); |
|
1490 |
//verify_vmslots(mh, CHECK); |
|
1491 |
||
1492 |
// Verify vmslots. |
|
1493 |
if (java_dyn_MethodHandle::vmslots(mh()) != receiver_pos) { |
|
1494 |
THROW_MSG(vmSymbols::java_lang_InternalError(), "bad vmslots in BMH (receiver)"); |
|
1495 |
} |
|
1496 |
} |
|
1497 |
||
1498 |
// Initialize a BMH with a receiver bound directly to a methodOop. |
|
1499 |
void MethodHandles::init_BoundMethodHandle_with_receiver(Handle mh, |
|
1500 |
methodHandle original_m, |
|
1501 |
KlassHandle receiver_limit, |
|
1502 |
int decode_flags, |
|
1503 |
TRAPS) { |
|
1504 |
// Check arguments. |
|
1505 |
if (mh.is_null() || original_m.is_null()) { |
|
1506 |
THROW(vmSymbols::java_lang_InternalError()); |
|
1507 |
} |
|
1508 |
||
1509 |
KlassHandle receiver_klass; |
|
1510 |
{ |
|
1511 |
oop receiver_oop = sun_dyn_BoundMethodHandle::argument(mh()); |
|
1512 |
if (receiver_oop != NULL) |
|
1513 |
receiver_klass = KlassHandle(THREAD, receiver_oop->klass()); |
|
1514 |
} |
|
1515 |
methodHandle m = dispatch_decoded_method(original_m, |
|
1516 |
receiver_limit, decode_flags, |
|
1517 |
receiver_klass, |
|
1518 |
CHECK); |
|
1519 |
if (m.is_null()) { THROW(vmSymbols::java_lang_InternalError()); } |
|
1520 |
if (m->is_abstract()) { THROW(vmSymbols::java_lang_AbstractMethodError()); } |
|
1521 |
||
1522 |
java_dyn_MethodHandle::init_vmslots(mh()); |
|
1523 |
||
1524 |
if (VerifyMethodHandles) { |
|
1525 |
verify_BoundMethodHandle_with_receiver(mh, m, CHECK); |
|
1526 |
} |
|
1527 |
||
1528 |
sun_dyn_BoundMethodHandle::set_vmtarget(mh(), m()); |
|
1529 |
||
1530 |
DEBUG_ONLY(int junk; klassOop junk2); |
|
1531 |
assert(MethodHandles::decode_method(mh(), junk2, junk) == m(), "properly stored for later decoding"); |
|
1532 |
assert(decode_MethodHandle_stack_pushes(mh()) == 1, "BMH pushes one stack slot"); |
|
1533 |
||
1534 |
// Done! |
|
1535 |
java_dyn_MethodHandle::set_vmentry(mh(), MethodHandles::entry(MethodHandles::_bound_ref_direct_mh)); |
|
1536 |
} |
|
1537 |
||
1538 |
void MethodHandles::verify_BoundMethodHandle(Handle mh, Handle target, int argnum, |
|
1539 |
bool direct_to_method, TRAPS) { |
|
1540 |
Handle ptype_handle(THREAD, |
|
1541 |
java_dyn_MethodType::ptype(java_dyn_MethodHandle::type(target()), argnum)); |
|
1542 |
KlassHandle ptype_klass; |
|
1543 |
BasicType ptype = java_lang_Class::as_BasicType(ptype_handle(), &ptype_klass); |
|
1544 |
int slots_pushed = type2size[ptype]; |
|
1545 |
||
1546 |
oop argument = sun_dyn_BoundMethodHandle::argument(mh()); |
|
1547 |
||
1548 |
const char* err = NULL; |
|
1549 |
||
1550 |
switch (ptype) { |
|
1551 |
case T_OBJECT: |
|
1552 |
if (argument != NULL) |
|
1553 |
// we must implicitly convert from the arg type to the outgoing ptype |
|
1554 |
err = check_argument_type_change(T_OBJECT, argument->klass(), ptype, ptype_klass(), argnum); |
|
1555 |
break; |
|
1556 |
||
1557 |
case T_ARRAY: case T_VOID: |
|
1558 |
assert(false, "array, void do not appear here"); |
|
1559 |
default: |
|
1560 |
if (ptype != T_INT && !is_subword_type(ptype)) { |
|
1561 |
err = "unexpected parameter type"; |
|
1562 |
break; |
|
1563 |
} |
|
1564 |
// check subrange of Integer.value, if necessary |
|
4571 | 1565 |
if (argument == NULL || argument->klass() != SystemDictionary::Integer_klass()) { |
2534 | 1566 |
err = "bound integer argument must be of type java.lang.Integer"; |
1567 |
break; |
|
1568 |
} |
|
1569 |
if (ptype != T_INT) { |
|
1570 |
int value_offset = java_lang_boxing_object::value_offset_in_bytes(T_INT); |
|
1571 |
jint value = argument->int_field(value_offset); |
|
1572 |
int vminfo = adapter_subword_vminfo(ptype); |
|
1573 |
jint subword = truncate_subword_from_vminfo(value, vminfo); |
|
1574 |
if (value != subword) { |
|
1575 |
err = "bound subword value does not fit into the subword type"; |
|
1576 |
break; |
|
1577 |
} |
|
1578 |
} |
|
1579 |
break; |
|
1580 |
case T_FLOAT: |
|
1581 |
case T_DOUBLE: |
|
1582 |
case T_LONG: |
|
1583 |
{ |
|
1584 |
// we must implicitly convert from the unboxed arg type to the outgoing ptype |
|
1585 |
BasicType argbox = java_lang_boxing_object::basic_type(argument); |
|
1586 |
if (argbox != ptype) { |
|
1587 |
err = check_argument_type_change(T_OBJECT, (argument == NULL |
|
4571 | 1588 |
? SystemDictionary::Object_klass() |
2534 | 1589 |
: argument->klass()), |
1590 |
ptype, ptype_klass(), argnum); |
|
1591 |
assert(err != NULL, "this must be an error"); |
|
1592 |
} |
|
1593 |
break; |
|
1594 |
} |
|
1595 |
} |
|
1596 |
||
1597 |
if (err == NULL) { |
|
1598 |
DEBUG_ONLY(int this_pushes = decode_MethodHandle_stack_pushes(mh())); |
|
1599 |
if (direct_to_method) { |
|
1600 |
assert(this_pushes == slots_pushed, "BMH pushes one or two stack slots"); |
|
1601 |
assert(slots_pushed <= MethodHandlePushLimit, ""); |
|
1602 |
} else { |
|
4094
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
1603 |
int target_pushes = decode_MethodHandle_stack_pushes(target()); |
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
1604 |
assert(this_pushes == slots_pushed + target_pushes, "BMH stack motion must be correct"); |
2534 | 1605 |
// 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
|
1606 |
// FIXME |
7fc02fbe5c7a
6893268: additional dynamic language related optimizations in C2
twisti
parents:
4429
diff
changeset
|
1607 |
// if (slots_pushed + target_pushes > MethodHandlePushLimit) |
7fc02fbe5c7a
6893268: additional dynamic language related optimizations in C2
twisti
parents:
4429
diff
changeset
|
1608 |
// err = "too many bound parameters"; |
2534 | 1609 |
} |
1610 |
} |
|
1611 |
||
1612 |
if (err == NULL) { |
|
1613 |
// Verify the rest of the method type. |
|
1614 |
err = check_method_type_insertion(java_dyn_MethodHandle::type(mh()), |
|
1615 |
argnum, ptype_handle(), |
|
1616 |
java_dyn_MethodHandle::type(target())); |
|
1617 |
} |
|
1618 |
||
1619 |
if (err != NULL) { |
|
1620 |
THROW_MSG(vmSymbols::java_lang_InternalError(), err); |
|
1621 |
} |
|
1622 |
} |
|
1623 |
||
1624 |
void MethodHandles::init_BoundMethodHandle(Handle mh, Handle target, int argnum, TRAPS) { |
|
1625 |
// Check arguments. |
|
1626 |
if (mh.is_null() || target.is_null() || !java_dyn_MethodHandle::is_instance(target())) { |
|
1627 |
THROW(vmSymbols::java_lang_InternalError()); |
|
1628 |
} |
|
1629 |
||
1630 |
java_dyn_MethodHandle::init_vmslots(mh()); |
|
1631 |
||
1632 |
if (VerifyMethodHandles) { |
|
1633 |
int insert_after = argnum - 1; |
|
1634 |
verify_vmargslot(mh, insert_after, sun_dyn_BoundMethodHandle::vmargslot(mh()), CHECK); |
|
1635 |
verify_vmslots(mh, CHECK); |
|
1636 |
} |
|
1637 |
||
4567
7fc02fbe5c7a
6893268: additional dynamic language related optimizations in C2
twisti
parents:
4429
diff
changeset
|
1638 |
// Get bound type and required slots. |
7fc02fbe5c7a
6893268: additional dynamic language related optimizations in C2
twisti
parents:
4429
diff
changeset
|
1639 |
oop ptype_oop = java_dyn_MethodType::ptype(java_dyn_MethodHandle::type(target()), argnum); |
7fc02fbe5c7a
6893268: additional dynamic language related optimizations in C2
twisti
parents:
4429
diff
changeset
|
1640 |
BasicType ptype = java_lang_Class::as_BasicType(ptype_oop); |
7fc02fbe5c7a
6893268: additional dynamic language related optimizations in C2
twisti
parents:
4429
diff
changeset
|
1641 |
int slots_pushed = type2size[ptype]; |
7fc02fbe5c7a
6893268: additional dynamic language related optimizations in C2
twisti
parents:
4429
diff
changeset
|
1642 |
|
2534 | 1643 |
// If (a) the target is a direct non-dispatched method handle, |
1644 |
// or (b) the target is a dispatched direct method handle and we |
|
1645 |
// are binding the receiver, cut out the middle-man. |
|
1646 |
// Do this by decoding the DMH and using its methodOop directly as vmtarget. |
|
1647 |
bool direct_to_method = false; |
|
1648 |
if (OptimizeMethodHandles && |
|
1649 |
target->klass() == SystemDictionary::DirectMethodHandle_klass() && |
|
1650 |
(argnum == 0 || sun_dyn_DirectMethodHandle::vmindex(target()) < 0)) { |
|
1651 |
int decode_flags = 0; klassOop receiver_limit_oop = NULL; |
|
1652 |
methodHandle m(THREAD, decode_method(target(), receiver_limit_oop, decode_flags)); |
|
1653 |
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
|
1654 |
DEBUG_ONLY(int m_vmslots = m->size_of_parameters() - slots_pushed); // pos. of 1st arg. |
2534 | 1655 |
assert(sun_dyn_BoundMethodHandle::vmslots(mh()) == m_vmslots, "type w/ m sig"); |
1656 |
if (argnum == 0 && (decode_flags & _dmf_has_receiver) != 0) { |
|
1657 |
KlassHandle receiver_limit(THREAD, receiver_limit_oop); |
|
1658 |
init_BoundMethodHandle_with_receiver(mh, m, |
|
1659 |
receiver_limit, decode_flags, |
|
1660 |
CHECK); |
|
1661 |
return; |
|
1662 |
} |
|
1663 |
||
1664 |
// Even if it is not a bound receiver, we still might be able |
|
1665 |
// to bind another argument and still invoke the methodOop directly. |
|
1666 |
if (!(decode_flags & _dmf_does_dispatch)) { |
|
1667 |
direct_to_method = true; |
|
1668 |
sun_dyn_BoundMethodHandle::set_vmtarget(mh(), m()); |
|
1669 |
} |
|
1670 |
} |
|
1671 |
if (!direct_to_method) |
|
1672 |
sun_dyn_BoundMethodHandle::set_vmtarget(mh(), target()); |
|
1673 |
||
1674 |
if (VerifyMethodHandles) { |
|
1675 |
verify_BoundMethodHandle(mh, target, argnum, direct_to_method, CHECK); |
|
1676 |
} |
|
1677 |
||
1678 |
// Next question: Is this a ref, int, or long bound value? |
|
1679 |
MethodHandleEntry* me = NULL; |
|
1680 |
if (ptype == T_OBJECT) { |
|
1681 |
if (direct_to_method) me = MethodHandles::entry(_bound_ref_direct_mh); |
|
1682 |
else me = MethodHandles::entry(_bound_ref_mh); |
|
1683 |
} else if (slots_pushed == 2) { |
|
1684 |
if (direct_to_method) me = MethodHandles::entry(_bound_long_direct_mh); |
|
1685 |
else me = MethodHandles::entry(_bound_long_mh); |
|
1686 |
} else if (slots_pushed == 1) { |
|
1687 |
if (direct_to_method) me = MethodHandles::entry(_bound_int_direct_mh); |
|
1688 |
else me = MethodHandles::entry(_bound_int_mh); |
|
1689 |
} else { |
|
1690 |
assert(false, ""); |
|
1691 |
} |
|
1692 |
||
1693 |
// Done! |
|
1694 |
java_dyn_MethodHandle::set_vmentry(mh(), me); |
|
1695 |
} |
|
1696 |
||
1697 |
static void throw_InternalError_for_bad_conversion(int conversion, const char* err, TRAPS) { |
|
1698 |
char msg[200]; |
|
1699 |
jio_snprintf(msg, sizeof(msg), "bad adapter (conversion=0x%08x): %s", conversion, err); |
|
1700 |
THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), msg); |
|
1701 |
} |
|
1702 |
||
1703 |
void MethodHandles::verify_AdapterMethodHandle(Handle mh, int argnum, TRAPS) { |
|
1704 |
jint conversion = sun_dyn_AdapterMethodHandle::conversion(mh()); |
|
1705 |
int argslot = sun_dyn_AdapterMethodHandle::vmargslot(mh()); |
|
1706 |
||
1707 |
verify_vmargslot(mh, argnum, argslot, CHECK); |
|
1708 |
verify_vmslots(mh, CHECK); |
|
1709 |
||
1710 |
jint conv_op = adapter_conversion_op(conversion); |
|
1711 |
if (!conv_op_valid(conv_op)) { |
|
1712 |
throw_InternalError_for_bad_conversion(conversion, "unknown conversion op", THREAD); |
|
1713 |
return; |
|
1714 |
} |
|
1715 |
EntryKind ek = adapter_entry_kind(conv_op); |
|
1716 |
||
1717 |
int stack_move = adapter_conversion_stack_move(conversion); |
|
1718 |
BasicType src = adapter_conversion_src_type(conversion); |
|
1719 |
BasicType dest = adapter_conversion_dest_type(conversion); |
|
1720 |
int vminfo = adapter_conversion_vminfo(conversion); // should be zero |
|
1721 |
||
1722 |
Handle argument(THREAD, sun_dyn_AdapterMethodHandle::argument(mh())); |
|
1723 |
Handle target(THREAD, sun_dyn_AdapterMethodHandle::vmtarget(mh())); |
|
1724 |
Handle src_mtype(THREAD, java_dyn_MethodHandle::type(mh())); |
|
1725 |
Handle dst_mtype(THREAD, java_dyn_MethodHandle::type(target())); |
|
1726 |
||
1727 |
const char* err = NULL; |
|
1728 |
||
1729 |
if (err == NULL) { |
|
1730 |
// Check that the correct argument is supplied, but only if it is required. |
|
1731 |
switch (ek) { |
|
1732 |
case _adapter_check_cast: // target type of cast |
|
1733 |
case _adapter_ref_to_prim: // wrapper type from which to unbox |
|
1734 |
case _adapter_prim_to_ref: // wrapper type to box into |
|
1735 |
case _adapter_collect_args: // array type to collect into |
|
1736 |
case _adapter_spread_args: // array type to spread from |
|
1737 |
if (!java_lang_Class::is_instance(argument()) |
|
1738 |
|| java_lang_Class::is_primitive(argument())) |
|
1739 |
{ err = "adapter requires argument of type java.lang.Class"; break; } |
|
1740 |
if (ek == _adapter_collect_args || |
|
1741 |
ek == _adapter_spread_args) { |
|
1742 |
// Make sure it is a suitable collection type. (Array, for now.) |
|
1743 |
Klass* ak = Klass::cast(java_lang_Class::as_klassOop(argument())); |
|
1744 |
if (!ak->oop_is_objArray()) { |
|
1745 |
{ err = "adapter requires argument of type java.lang.Class<Object[]>"; break; } |
|
1746 |
} |
|
1747 |
} |
|
1748 |
break; |
|
1749 |
case _adapter_flyby: |
|
1750 |
case _adapter_ricochet: |
|
1751 |
if (!java_dyn_MethodHandle::is_instance(argument())) |
|
1752 |
{ err = "MethodHandle adapter argument required"; break; } |
|
1753 |
break; |
|
1754 |
default: |
|
1755 |
if (argument.not_null()) |
|
1756 |
{ err = "adapter has spurious argument"; break; } |
|
1757 |
break; |
|
1758 |
} |
|
1759 |
} |
|
1760 |
||
1761 |
if (err == NULL) { |
|
1762 |
// Check that the src/dest types are supplied if needed. |
|
1763 |
switch (ek) { |
|
4094
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
1764 |
case _adapter_check_cast: |
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
1765 |
if (src != T_OBJECT || dest != T_OBJECT) { |
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
1766 |
err = "adapter requires object src/dest conversion subfields"; |
1f424b2b2171
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2570
diff
changeset
|
1767 |
} |
1f424b2b2171
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parents:
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diff
changeset
|
1768 |
break; |
2534 | 1769 |
case _adapter_prim_to_prim: |
1770 |
if (!is_java_primitive(src) || !is_java_primitive(dest) || src == dest) { |
|
1771 |
err = "adapter requires primitive src/dest conversion subfields"; break; |
|
1772 |
} |
|
1773 |
if ( (src == T_FLOAT || src == T_DOUBLE) && !(dest == T_FLOAT || dest == T_DOUBLE) || |
|
1774 |
!(src == T_FLOAT || src == T_DOUBLE) && (dest == T_FLOAT || dest == T_DOUBLE)) { |
|
1775 |
err = "adapter cannot convert beween floating and fixed-point"; break; |
|
1776 |
} |
|
1777 |
break; |
|
1778 |
case _adapter_ref_to_prim: |
|
1779 |
if (src != T_OBJECT || !is_java_primitive(dest) |
|
1780 |
|| argument() != Klass::cast(SystemDictionary::box_klass(dest))->java_mirror()) { |
|
1781 |
err = "adapter requires primitive dest conversion subfield"; break; |
|
1782 |
} |
|
1783 |
break; |
|
1784 |
case _adapter_prim_to_ref: |
|
1785 |
if (!is_java_primitive(src) || dest != T_OBJECT |
|
1786 |
|| argument() != Klass::cast(SystemDictionary::box_klass(src))->java_mirror()) { |
|
1787 |
err = "adapter requires primitive src conversion subfield"; break; |
|
1788 |
} |
|
1789 |
break; |
|
1790 |
case _adapter_swap_args: |
|
1791 |
case _adapter_rot_args: |
|
1792 |
{ |
|
1793 |
if (!src || src != dest) { |
|
1794 |
err = "adapter requires src/dest conversion subfields for swap"; break; |
|
1795 |
} |
|
1796 |
int swap_size = type2size[src]; |
|
4094
1f424b2b2171
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parents:
2570
diff
changeset
|
1797 |
oop src_mtype = sun_dyn_AdapterMethodHandle::type(mh()); |
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
1798 |
oop dest_mtype = sun_dyn_AdapterMethodHandle::type(target()); |
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
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parents:
2570
diff
changeset
|
1799 |
int slot_limit = sun_dyn_AdapterMethodHandle::vmslots(target()); |
2534 | 1800 |
int src_slot = argslot; |
1801 |
int dest_slot = vminfo; |
|
1802 |
bool rotate_up = (src_slot > dest_slot); // upward rotation |
|
1803 |
int src_arg = argnum; |
|
1804 |
int dest_arg = argument_slot_to_argnum(dest_mtype, dest_slot); |
|
1805 |
verify_vmargslot(mh, dest_arg, dest_slot, CHECK); |
|
1806 |
if (!(dest_slot >= src_slot + swap_size) && |
|
1807 |
!(src_slot >= dest_slot + swap_size)) { |
|
1808 |
err = "source, destination slots must be distinct"; |
|
1809 |
} else if (ek == _adapter_swap_args && !(src_slot > dest_slot)) { |
|
1810 |
err = "source of swap must be deeper in stack"; |
|
1811 |
} else if (ek == _adapter_swap_args) { |
|
1812 |
err = check_argument_type_change(java_dyn_MethodType::ptype(src_mtype, dest_arg), |
|
1813 |
java_dyn_MethodType::ptype(dest_mtype, src_arg), |
|
1814 |
dest_arg); |
|
1815 |
} else if (ek == _adapter_rot_args) { |
|
1816 |
if (rotate_up) { |
|
1817 |
assert((src_slot > dest_slot) && (src_arg < dest_arg), ""); |
|
1818 |
// rotate up: [dest_slot..src_slot-ss] --> [dest_slot+ss..src_slot] |
|
1819 |
// that is: [src_arg+1..dest_arg] --> [src_arg..dest_arg-1] |
|
1820 |
for (int i = src_arg+1; i <= dest_arg && err == NULL; i++) { |
|
1821 |
err = check_argument_type_change(java_dyn_MethodType::ptype(src_mtype, i), |
|
1822 |
java_dyn_MethodType::ptype(dest_mtype, i-1), |
|
1823 |
i); |
|
1824 |
} |
|
1825 |
} else { // rotate down |
|
1826 |
assert((src_slot < dest_slot) && (src_arg > dest_arg), ""); |
|
1827 |
// rotate down: [src_slot+ss..dest_slot] --> [src_slot..dest_slot-ss] |
|
1828 |
// that is: [dest_arg..src_arg-1] --> [dst_arg+1..src_arg] |
|
1829 |
for (int i = dest_arg; i <= src_arg-1 && err == NULL; i++) { |
|
1830 |
err = check_argument_type_change(java_dyn_MethodType::ptype(src_mtype, i), |
|
1831 |
java_dyn_MethodType::ptype(dest_mtype, i+1), |
|
1832 |
i); |
|
1833 |
} |
|
1834 |
} |
|
1835 |
} |
|
1836 |
if (err == NULL) |
|
1837 |
err = check_argument_type_change(java_dyn_MethodType::ptype(src_mtype, src_arg), |
|
1838 |
java_dyn_MethodType::ptype(dest_mtype, dest_arg), |
|
1839 |
src_arg); |
|
1840 |
} |
|
1841 |
break; |
|
1842 |
case _adapter_collect_args: |
|
1843 |
case _adapter_spread_args: |
|
1844 |
{ |
|
1845 |
BasicType coll_type = (ek == _adapter_collect_args) ? dest : src; |
|
1846 |
BasicType elem_type = (ek == _adapter_collect_args) ? src : dest; |
|
1847 |
if (coll_type != T_OBJECT || elem_type != T_OBJECT) { |
|
1848 |
err = "adapter requires src/dest subfields"; break; |
|
1849 |
// later: |
|
1850 |
// - consider making coll be a primitive array |
|
1851 |
// - consider making coll be a heterogeneous collection |
|
1852 |
} |
|
1853 |
} |
|
1854 |
break; |
|
1855 |
default: |
|
1856 |
if (src != 0 || dest != 0) { |
|
1857 |
err = "adapter has spurious src/dest conversion subfields"; break; |
|
1858 |
} |
|
1859 |
break; |
|
1860 |
} |
|
1861 |
} |
|
1862 |
||
1863 |
if (err == NULL) { |
|
1864 |
// Check the stack_move subfield. |
|
1865 |
// It must always report the net change in stack size, positive or negative. |
|
1866 |
int slots_pushed = stack_move / stack_move_unit(); |
|
1867 |
switch (ek) { |
|
1868 |
case _adapter_prim_to_prim: |
|
1869 |
case _adapter_ref_to_prim: |
|
1870 |
case _adapter_prim_to_ref: |
|
1871 |
if (slots_pushed != type2size[dest] - type2size[src]) { |
|
1872 |
err = "wrong stack motion for primitive conversion"; |
|
1873 |
} |
|
1874 |
break; |
|
1875 |
case _adapter_dup_args: |
|
1876 |
if (slots_pushed <= 0) { |
|
1877 |
err = "adapter requires conversion subfield slots_pushed > 0"; |
|
1878 |
} |
|
1879 |
break; |
|
1880 |
case _adapter_drop_args: |
|
1881 |
if (slots_pushed >= 0) { |
|
1882 |
err = "adapter requires conversion subfield slots_pushed < 0"; |
|
1883 |
} |
|
1884 |
break; |
|
1885 |
case _adapter_collect_args: |
|
1886 |
if (slots_pushed > 1) { |
|
1887 |
err = "adapter requires conversion subfield slots_pushed <= 1"; |
|
1888 |
} |
|
1889 |
break; |
|
1890 |
case _adapter_spread_args: |
|
1891 |
if (slots_pushed < -1) { |
|
1892 |
err = "adapter requires conversion subfield slots_pushed >= -1"; |
|
1893 |
} |
|
1894 |
break; |
|
1895 |
default: |
|
1896 |
if (stack_move != 0) { |
|
1897 |
err = "adapter has spurious stack_move conversion subfield"; |
|
1898 |
} |
|
1899 |
break; |
|
1900 |
} |
|
1901 |
if (err == NULL && stack_move != slots_pushed * stack_move_unit()) { |
|
1902 |
err = "stack_move conversion subfield must be multiple of stack_move_unit"; |
|
1903 |
} |
|
1904 |
} |
|
1905 |
||
1906 |
if (err == NULL) { |
|
1907 |
// Make sure this adapter does not push too deeply. |
|
1908 |
int slots_pushed = stack_move / stack_move_unit(); |
|
1909 |
int this_vmslots = java_dyn_MethodHandle::vmslots(mh()); |
|
4094
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
1910 |
int target_vmslots = java_dyn_MethodHandle::vmslots(target()); |
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
1911 |
if (slots_pushed != (target_vmslots - this_vmslots)) { |
2534 | 1912 |
err = "stack_move inconsistent with previous and current MethodType vmslots"; |
1913 |
} else if (slots_pushed > 0) { |
|
1914 |
// verify stack_move against MethodHandlePushLimit |
|
4094
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
1915 |
int target_pushes = decode_MethodHandle_stack_pushes(target()); |
2534 | 1916 |
// 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
|
1917 |
if (slots_pushed + target_pushes > MethodHandlePushLimit) { |
2534 | 1918 |
err = "adapter pushes too many parameters"; |
1919 |
} |
|
1920 |
} |
|
1921 |
||
1922 |
// While we're at it, check that the stack motion decoder works: |
|
4094
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
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parents:
2570
diff
changeset
|
1923 |
DEBUG_ONLY(int target_pushes = decode_MethodHandle_stack_pushes(target())); |
2534 | 1924 |
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
|
1925 |
assert(this_pushes == slots_pushed + target_pushes, "AMH stack motion must be correct"); |
2534 | 1926 |
} |
1927 |
||
1928 |
if (err == NULL && vminfo != 0) { |
|
1929 |
switch (ek) { |
|
1930 |
case _adapter_swap_args: |
|
1931 |
case _adapter_rot_args: |
|
1932 |
break; // OK |
|
1933 |
default: |
|
1934 |
err = "vminfo subfield is reserved to the JVM"; |
|
1935 |
} |
|
1936 |
} |
|
1937 |
||
1938 |
// Do additional ad hoc checks. |
|
1939 |
if (err == NULL) { |
|
1940 |
switch (ek) { |
|
1941 |
case _adapter_retype_only: |
|
4094
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
1942 |
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
|
1943 |
break; |
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
1944 |
|
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
1945 |
case _adapter_retype_raw: |
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
1946 |
err = check_method_type_passthrough(src_mtype(), dst_mtype(), true); |
2534 | 1947 |
break; |
1948 |
||
1949 |
case _adapter_check_cast: |
|
1950 |
{ |
|
1951 |
// The actual value being checked must be a reference: |
|
1952 |
err = check_argument_type_change(java_dyn_MethodType::ptype(src_mtype(), argnum), |
|
1953 |
object_java_mirror(), argnum); |
|
1954 |
if (err != NULL) break; |
|
1955 |
||
1956 |
// The output of the cast must fit with the destination argument: |
|
1957 |
Handle cast_class = argument; |
|
1958 |
err = check_method_type_conversion(src_mtype(), |
|
1959 |
argnum, cast_class(), |
|
1960 |
dst_mtype()); |
|
1961 |
} |
|
1962 |
break; |
|
1963 |
||
1964 |
// %%% TO DO: continue in remaining cases to verify src/dst_mtype if VerifyMethodHandles |
|
1965 |
} |
|
1966 |
} |
|
1967 |
||
1968 |
if (err != NULL) { |
|
1969 |
throw_InternalError_for_bad_conversion(conversion, err, THREAD); |
|
1970 |
return; |
|
1971 |
} |
|
1972 |
||
1973 |
} |
|
1974 |
||
1975 |
void MethodHandles::init_AdapterMethodHandle(Handle mh, Handle target, int argnum, TRAPS) { |
|
1976 |
oop argument = sun_dyn_AdapterMethodHandle::argument(mh()); |
|
1977 |
int argslot = sun_dyn_AdapterMethodHandle::vmargslot(mh()); |
|
1978 |
jint conversion = sun_dyn_AdapterMethodHandle::conversion(mh()); |
|
1979 |
jint conv_op = adapter_conversion_op(conversion); |
|
1980 |
||
1981 |
// adjust the adapter code to the internal EntryKind enumeration: |
|
1982 |
EntryKind ek_orig = adapter_entry_kind(conv_op); |
|
1983 |
EntryKind ek_opt = ek_orig; // may be optimized |
|
1984 |
||
1985 |
// Finalize the vmtarget field (Java initialized it to null). |
|
1986 |
if (!java_dyn_MethodHandle::is_instance(target())) { |
|
1987 |
throw_InternalError_for_bad_conversion(conversion, "bad target", THREAD); |
|
1988 |
return; |
|
1989 |
} |
|
1990 |
sun_dyn_AdapterMethodHandle::set_vmtarget(mh(), target()); |
|
1991 |
||
1992 |
if (VerifyMethodHandles) { |
|
1993 |
verify_AdapterMethodHandle(mh, argnum, CHECK); |
|
1994 |
} |
|
1995 |
||
1996 |
int stack_move = adapter_conversion_stack_move(conversion); |
|
1997 |
BasicType src = adapter_conversion_src_type(conversion); |
|
1998 |
BasicType dest = adapter_conversion_dest_type(conversion); |
|
1999 |
int vminfo = adapter_conversion_vminfo(conversion); // should be zero |
|
2000 |
||
2001 |
const char* err = NULL; |
|
2002 |
||
2003 |
// Now it's time to finish the case analysis and pick a MethodHandleEntry. |
|
2004 |
switch (ek_orig) { |
|
2005 |
case _adapter_retype_only: |
|
4094
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
2006 |
case _adapter_retype_raw: |
2534 | 2007 |
case _adapter_check_cast: |
2008 |
case _adapter_dup_args: |
|
2009 |
case _adapter_drop_args: |
|
2010 |
// these work fine via general case code |
|
2011 |
break; |
|
2012 |
||
2013 |
case _adapter_prim_to_prim: |
|
2014 |
{ |
|
2015 |
// Non-subword cases are {int,float,long,double} -> {int,float,long,double}. |
|
2016 |
// And, the {float,double} -> {int,long} cases must be handled by Java. |
|
2017 |
switch (type2size[src] *4+ type2size[dest]) { |
|
2018 |
case 1 *4+ 1: |
|
2019 |
assert(src == T_INT || is_subword_type(src), "source is not float"); |
|
2020 |
// Subword-related cases are int -> {boolean,byte,char,short}. |
|
2021 |
ek_opt = _adapter_opt_i2i; |
|
2022 |
vminfo = adapter_subword_vminfo(dest); |
|
2023 |
break; |
|
2024 |
case 2 *4+ 1: |
|
2025 |
if (src == T_LONG && (dest == T_INT || is_subword_type(dest))) { |
|
2026 |
ek_opt = _adapter_opt_l2i; |
|
2027 |
vminfo = adapter_subword_vminfo(dest); |
|
2028 |
} else if (src == T_DOUBLE && dest == T_FLOAT) { |
|
2029 |
ek_opt = _adapter_opt_d2f; |
|
2030 |
} else { |
|
2031 |
assert(false, ""); |
|
2032 |
} |
|
2033 |
break; |
|
2034 |
case 1 *4+ 2: |
|
2035 |
if (src == T_INT && dest == T_LONG) { |
|
2036 |
ek_opt = _adapter_opt_i2l; |
|
2037 |
} else if (src == T_FLOAT && dest == T_DOUBLE) { |
|
2038 |
ek_opt = _adapter_opt_f2d; |
|
2039 |
} else { |
|
2040 |
assert(false, ""); |
|
2041 |
} |
|
2042 |
break; |
|
2043 |
default: |
|
2044 |
assert(false, ""); |
|
2045 |
break; |
|
2046 |
} |
|
2047 |
} |
|
2048 |
break; |
|
2049 |
||
2050 |
case _adapter_ref_to_prim: |
|
2051 |
{ |
|
2052 |
switch (type2size[dest]) { |
|
2053 |
case 1: |
|
2054 |
ek_opt = _adapter_opt_unboxi; |
|
2055 |
vminfo = adapter_subword_vminfo(dest); |
|
2056 |
break; |
|
2057 |
case 2: |
|
2058 |
ek_opt = _adapter_opt_unboxl; |
|
2059 |
break; |
|
2060 |
default: |
|
2061 |
assert(false, ""); |
|
2062 |
break; |
|
2063 |
} |
|
2064 |
} |
|
2065 |
break; |
|
2066 |
||
2067 |
case _adapter_prim_to_ref: |
|
2068 |
goto throw_not_impl; // allocates, hence could block |
|
2069 |
||
2070 |
case _adapter_swap_args: |
|
2071 |
case _adapter_rot_args: |
|
2072 |
{ |
|
2073 |
int swap_slots = type2size[src]; |
|
4094
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
2074 |
int slot_limit = sun_dyn_AdapterMethodHandle::vmslots(mh()); |
2534 | 2075 |
int src_slot = argslot; |
2076 |
int dest_slot = vminfo; |
|
2077 |
int rotate = (ek_orig == _adapter_swap_args) ? 0 : (src_slot > dest_slot) ? 1 : -1; |
|
2078 |
switch (swap_slots) { |
|
2079 |
case 1: |
|
2080 |
ek_opt = (!rotate ? _adapter_opt_swap_1 : |
|
2081 |
rotate > 0 ? _adapter_opt_rot_1_up : _adapter_opt_rot_1_down); |
|
2082 |
break; |
|
2083 |
case 2: |
|
2084 |
ek_opt = (!rotate ? _adapter_opt_swap_2 : |
|
2085 |
rotate > 0 ? _adapter_opt_rot_2_up : _adapter_opt_rot_2_down); |
|
2086 |
break; |
|
2087 |
default: |
|
2088 |
assert(false, ""); |
|
2089 |
break; |
|
2090 |
} |
|
2091 |
} |
|
2092 |
break; |
|
2093 |
||
2094 |
case _adapter_collect_args: |
|
2095 |
goto throw_not_impl; // allocates, hence could block |
|
2096 |
||
2097 |
case _adapter_spread_args: |
|
2098 |
{ |
|
2099 |
// vminfo will be the required length of the array |
|
2100 |
int slots_pushed = stack_move / stack_move_unit(); |
|
2101 |
int array_size = slots_pushed + 1; |
|
2102 |
assert(array_size >= 0, ""); |
|
2103 |
vminfo = array_size; |
|
2104 |
switch (array_size) { |
|
2105 |
case 0: ek_opt = _adapter_opt_spread_0; break; |
|
2106 |
case 1: ek_opt = _adapter_opt_spread_1; break; |
|
2107 |
default: ek_opt = _adapter_opt_spread_more; break; |
|
2108 |
} |
|
2109 |
if ((vminfo & CONV_VMINFO_MASK) != vminfo) |
|
2110 |
goto throw_not_impl; // overflow |
|
2111 |
} |
|
2112 |
break; |
|
2113 |
||
2114 |
case _adapter_flyby: |
|
2115 |
case _adapter_ricochet: |
|
2116 |
goto throw_not_impl; // runs Java code, hence could block |
|
2117 |
||
2118 |
default: |
|
2119 |
// should have failed much earlier; must be a missing case here |
|
2120 |
assert(false, "incomplete switch"); |
|
2121 |
// and fall through: |
|
2122 |
||
2123 |
throw_not_impl: |
|
2124 |
// FIXME: these adapters are NYI |
|
2125 |
err = "adapter not yet implemented in the JVM"; |
|
2126 |
break; |
|
2127 |
} |
|
2128 |
||
2129 |
if (err != NULL) { |
|
2130 |
throw_InternalError_for_bad_conversion(conversion, err, THREAD); |
|
2131 |
return; |
|
2132 |
} |
|
2133 |
||
2134 |
// Rebuild the conversion value; maybe parts of it were changed. |
|
2135 |
jint new_conversion = adapter_conversion(conv_op, src, dest, stack_move, vminfo); |
|
2136 |
||
2137 |
// Finalize the conversion field. (Note that it is final to Java code.) |
|
2138 |
sun_dyn_AdapterMethodHandle::set_conversion(mh(), new_conversion); |
|
2139 |
||
2140 |
// Done! |
|
2141 |
java_dyn_MethodHandle::set_vmentry(mh(), entry(ek_opt)); |
|
2142 |
||
2143 |
// There should be enough memory barriers on exit from native methods |
|
2144 |
// to ensure that the MH is fully initialized to all threads before |
|
2145 |
// Java code can publish it in global data structures. |
|
2146 |
} |
|
2147 |
||
2148 |
// |
|
2149 |
// Here are the native methods on sun.dyn.MethodHandleImpl. |
|
2150 |
// They are the private interface between this JVM and the HotSpot-specific |
|
2151 |
// Java code that implements JSR 292 method handles. |
|
2152 |
// |
|
2153 |
// Note: We use a JVM_ENTRY macro to define each of these, for this is the way |
|
2154 |
// that intrinsic (non-JNI) native methods are defined in HotSpot. |
|
2155 |
// |
|
2156 |
||
2157 |
// direct method handles for invokestatic or invokespecial |
|
2158 |
// void init(DirectMethodHandle self, MemberName ref, boolean doDispatch, Class<?> caller); |
|
2159 |
JVM_ENTRY(void, MHI_init_DMH(JNIEnv *env, jobject igcls, jobject mh_jh, |
|
2160 |
jobject target_jh, jboolean do_dispatch, jobject caller_jh)) { |
|
2161 |
ResourceMark rm; // for error messages |
|
2162 |
||
2163 |
// This is the guy we are initializing: |
|
2164 |
if (mh_jh == NULL) { THROW(vmSymbols::java_lang_InternalError()); } |
|
2165 |
Handle mh(THREAD, JNIHandles::resolve_non_null(mh_jh)); |
|
2166 |
||
2167 |
// Early returns out of this method leave the DMH in an unfinished state. |
|
2168 |
assert(java_dyn_MethodHandle::vmentry(mh()) == NULL, "must be safely null"); |
|
2169 |
||
2170 |
// which method are we really talking about? |
|
2171 |
if (target_jh == NULL) { THROW(vmSymbols::java_lang_InternalError()); } |
|
2172 |
oop target_oop = JNIHandles::resolve_non_null(target_jh); |
|
2173 |
if (sun_dyn_MemberName::is_instance(target_oop) && |
|
2174 |
sun_dyn_MemberName::vmindex(target_oop) == VM_INDEX_UNINITIALIZED) { |
|
2175 |
Handle mname(THREAD, target_oop); |
|
2176 |
MethodHandles::resolve_MemberName(mname, CHECK); |
|
2177 |
target_oop = mname(); // in case of GC |
|
2178 |
} |
|
2179 |
||
2180 |
int decode_flags = 0; klassOop receiver_limit = NULL; |
|
2181 |
methodHandle m(THREAD, |
|
2182 |
MethodHandles::decode_method(target_oop, |
|
2183 |
receiver_limit, decode_flags)); |
|
2184 |
if (m.is_null()) { THROW_MSG(vmSymbols::java_lang_InternalError(), "no such method"); } |
|
2185 |
||
2186 |
// The trusted Java code that calls this method should already have performed |
|
2187 |
// access checks on behalf of the given caller. But, we can verify this. |
|
2188 |
if (VerifyMethodHandles && caller_jh != NULL) { |
|
2189 |
KlassHandle caller(THREAD, java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(caller_jh))); |
|
2190 |
// If this were a bytecode, the first access check would be against |
|
2191 |
// the "reference class" mentioned in the CONSTANT_Methodref. |
|
5420
586d3988e72b
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parents:
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diff
changeset
|
2192 |
// We don't know at this point which class that was, and if we |
586d3988e72b
6939134: JSR 292 adjustments to method handle invocation
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parents:
5050
diff
changeset
|
2193 |
// check against m.method_holder we might get the wrong answer. |
586d3988e72b
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diff
changeset
|
2194 |
// 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
|
2195 |
// happens, when we call resolve_MemberName. |
586d3988e72b
6939134: JSR 292 adjustments to method handle invocation
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parents:
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diff
changeset
|
2196 |
// |
586d3988e72b
6939134: JSR 292 adjustments to method handle invocation
jrose
parents:
5050
diff
changeset
|
2197 |
// (A public class can inherit public members from private supers, |
586d3988e72b
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diff
changeset
|
2198 |
// and it would be wrong to check access against the private super |
586d3988e72b
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diff
changeset
|
2199 |
// if the original symbolic reference was against the public class.) |
586d3988e72b
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diff
changeset
|
2200 |
// |
2534 | 2201 |
// If there were a bytecode, the next step would be to lookup the method |
2202 |
// in the reference class, then then check the method's access bits. |
|
2203 |
// Emulate LinkResolver::check_method_accessability. |
|
2204 |
klassOop resolved_klass = m->method_holder(); |
|
2205 |
if (!Reflection::verify_field_access(caller->as_klassOop(), |
|
5420
586d3988e72b
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diff
changeset
|
2206 |
resolved_klass, resolved_klass, |
2534 | 2207 |
m->access_flags(), |
2208 |
true)) { |
|
2209 |
// %%% following cutout belongs in Reflection::verify_field_access? |
|
2210 |
bool same_pm = Reflection::is_same_package_member(caller->as_klassOop(), |
|
5420
586d3988e72b
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parents:
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diff
changeset
|
2211 |
resolved_klass, THREAD); |
2534 | 2212 |
if (!same_pm) { |
2213 |
THROW_MSG(vmSymbols::java_lang_InternalError(), m->name_and_sig_as_C_string()); |
|
2214 |
} |
|
2215 |
} |
|
2216 |
} |
|
2217 |
||
2218 |
MethodHandles::init_DirectMethodHandle(mh, m, (do_dispatch != JNI_FALSE), CHECK); |
|
2219 |
} |
|
2220 |
JVM_END |
|
2221 |
||
2222 |
// bound method handles |
|
2223 |
JVM_ENTRY(void, MHI_init_BMH(JNIEnv *env, jobject igcls, jobject mh_jh, |
|
2224 |
jobject target_jh, int argnum)) { |
|
2225 |
ResourceMark rm; // for error messages |
|
2226 |
||
2227 |
// This is the guy we are initializing: |
|
2228 |
if (mh_jh == NULL) { THROW(vmSymbols::java_lang_InternalError()); } |
|
2229 |
Handle mh(THREAD, JNIHandles::resolve_non_null(mh_jh)); |
|
2230 |
||
2231 |
// Early returns out of this method leave the BMH in an unfinished state. |
|
2232 |
assert(java_dyn_MethodHandle::vmentry(mh()) == NULL, "must be safely null"); |
|
2233 |
||
2234 |
if (target_jh == NULL) { THROW(vmSymbols::java_lang_InternalError()); } |
|
2235 |
Handle target(THREAD, JNIHandles::resolve_non_null(target_jh)); |
|
2236 |
||
2237 |
if (!java_dyn_MethodHandle::is_instance(target())) { |
|
2238 |
// Target object is a reflective method. (%%% Do we need this alternate path?) |
|
2239 |
Untested("init_BMH of non-MH"); |
|
2240 |
if (argnum != 0) { THROW(vmSymbols::java_lang_InternalError()); } |
|
2241 |
int decode_flags = 0; klassOop receiver_limit_oop = NULL; |
|
2242 |
methodHandle m(THREAD, |
|
2243 |
MethodHandles::decode_method(target(), |
|
2244 |
receiver_limit_oop, |
|
2245 |
decode_flags)); |
|
2246 |
KlassHandle receiver_limit(THREAD, receiver_limit_oop); |
|
2247 |
MethodHandles::init_BoundMethodHandle_with_receiver(mh, m, |
|
2248 |
receiver_limit, |
|
2249 |
decode_flags, |
|
2250 |
CHECK); |
|
2251 |
return; |
|
2252 |
} |
|
2253 |
||
2254 |
// Build a BMH on top of a DMH or another BMH: |
|
2255 |
MethodHandles::init_BoundMethodHandle(mh, target, argnum, CHECK); |
|
2256 |
} |
|
2257 |
JVM_END |
|
2258 |
||
2259 |
// adapter method handles |
|
2260 |
JVM_ENTRY(void, MHI_init_AMH(JNIEnv *env, jobject igcls, jobject mh_jh, |
|
2261 |
jobject target_jh, int argnum)) { |
|
2262 |
// This is the guy we are initializing: |
|
2263 |
if (mh_jh == NULL || target_jh == NULL) { |
|
2264 |
THROW(vmSymbols::java_lang_InternalError()); |
|
2265 |
} |
|
2266 |
Handle mh(THREAD, JNIHandles::resolve_non_null(mh_jh)); |
|
2267 |
Handle target(THREAD, JNIHandles::resolve_non_null(target_jh)); |
|
2268 |
||
2269 |
// Early returns out of this method leave the AMH in an unfinished state. |
|
2270 |
assert(java_dyn_MethodHandle::vmentry(mh()) == NULL, "must be safely null"); |
|
2271 |
||
2272 |
MethodHandles::init_AdapterMethodHandle(mh, target, argnum, CHECK); |
|
2273 |
} |
|
2274 |
JVM_END |
|
2275 |
||
2276 |
// method type forms |
|
2277 |
JVM_ENTRY(void, MHI_init_MT(JNIEnv *env, jobject igcls, jobject erased_jh)) { |
|
2278 |
if (erased_jh == NULL) return; |
|
2279 |
if (TraceMethodHandles) { |
|
2280 |
tty->print("creating MethodType form "); |
|
2281 |
if (WizardMode || Verbose) { // Warning: this calls Java code on the MH! |
|
2282 |
// call Object.toString() |
|
2283 |
symbolOop name = vmSymbols::toString_name(), sig = vmSymbols::void_string_signature(); |
|
2284 |
JavaCallArguments args(Handle(THREAD, JNIHandles::resolve_non_null(erased_jh))); |
|
2285 |
JavaValue result(T_OBJECT); |
|
4571 | 2286 |
JavaCalls::call_virtual(&result, SystemDictionary::Object_klass(), name, sig, |
2534 | 2287 |
&args, CHECK); |
2288 |
Handle str(THREAD, (oop)result.get_jobject()); |
|
2289 |
java_lang_String::print(str, tty); |
|
2290 |
} |
|
2291 |
tty->cr(); |
|
2292 |
} |
|
2293 |
} |
|
2294 |
JVM_END |
|
2295 |
||
2296 |
// debugging and reflection |
|
2297 |
JVM_ENTRY(jobject, MHI_getTarget(JNIEnv *env, jobject igcls, jobject mh_jh, jint format)) { |
|
2298 |
Handle mh(THREAD, JNIHandles::resolve(mh_jh)); |
|
2299 |
if (!java_dyn_MethodHandle::is_instance(mh())) { |
|
2300 |
THROW_NULL(vmSymbols::java_lang_IllegalArgumentException()); |
|
2301 |
} |
|
2302 |
oop target = MethodHandles::encode_target(mh, format, CHECK_NULL); |
|
2303 |
return JNIHandles::make_local(THREAD, target); |
|
2304 |
} |
|
2305 |
JVM_END |
|
2306 |
||
2307 |
JVM_ENTRY(jint, MHI_getConstant(JNIEnv *env, jobject igcls, jint which)) { |
|
2308 |
switch (which) { |
|
2309 |
case MethodHandles::GC_JVM_PUSH_LIMIT: |
|
2310 |
guarantee(MethodHandlePushLimit >= 2 && MethodHandlePushLimit <= 0xFF, |
|
2311 |
"MethodHandlePushLimit parameter must be in valid range"); |
|
2312 |
return MethodHandlePushLimit; |
|
4094
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
2313 |
case MethodHandles::GC_JVM_STACK_MOVE_UNIT: |
2534 | 2314 |
// return number of words per slot, signed according to stack direction |
2315 |
return MethodHandles::stack_move_unit(); |
|
5420
586d3988e72b
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parents:
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diff
changeset
|
2316 |
case MethodHandles::GC_CONV_OP_IMPLEMENTED_MASK: |
586d3988e72b
6939134: JSR 292 adjustments to method handle invocation
jrose
parents:
5050
diff
changeset
|
2317 |
return MethodHandles::adapter_conversion_ops_supported_mask(); |
2534 | 2318 |
} |
2319 |
return 0; |
|
2320 |
} |
|
2321 |
JVM_END |
|
2322 |
||
2323 |
#ifndef PRODUCT |
|
2324 |
#define EACH_NAMED_CON(template) \ |
|
2325 |
template(MethodHandles,GC_JVM_PUSH_LIMIT) \ |
|
4094
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
2326 |
template(MethodHandles,GC_JVM_STACK_MOVE_UNIT) \ |
2534 | 2327 |
template(MethodHandles,ETF_HANDLE_OR_METHOD_NAME) \ |
2328 |
template(MethodHandles,ETF_DIRECT_HANDLE) \ |
|
2329 |
template(MethodHandles,ETF_METHOD_NAME) \ |
|
2330 |
template(MethodHandles,ETF_REFLECT_METHOD) \ |
|
2331 |
template(sun_dyn_MemberName,MN_IS_METHOD) \ |
|
2332 |
template(sun_dyn_MemberName,MN_IS_CONSTRUCTOR) \ |
|
2333 |
template(sun_dyn_MemberName,MN_IS_FIELD) \ |
|
2334 |
template(sun_dyn_MemberName,MN_IS_TYPE) \ |
|
2335 |
template(sun_dyn_MemberName,MN_SEARCH_SUPERCLASSES) \ |
|
2336 |
template(sun_dyn_MemberName,MN_SEARCH_INTERFACES) \ |
|
2337 |
template(sun_dyn_MemberName,VM_INDEX_UNINITIALIZED) \ |
|
2338 |
template(sun_dyn_AdapterMethodHandle,OP_RETYPE_ONLY) \ |
|
4094
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
2339 |
template(sun_dyn_AdapterMethodHandle,OP_RETYPE_RAW) \ |
2534 | 2340 |
template(sun_dyn_AdapterMethodHandle,OP_CHECK_CAST) \ |
2341 |
template(sun_dyn_AdapterMethodHandle,OP_PRIM_TO_PRIM) \ |
|
2342 |
template(sun_dyn_AdapterMethodHandle,OP_REF_TO_PRIM) \ |
|
2343 |
template(sun_dyn_AdapterMethodHandle,OP_PRIM_TO_REF) \ |
|
2344 |
template(sun_dyn_AdapterMethodHandle,OP_SWAP_ARGS) \ |
|
2345 |
template(sun_dyn_AdapterMethodHandle,OP_ROT_ARGS) \ |
|
2346 |
template(sun_dyn_AdapterMethodHandle,OP_DUP_ARGS) \ |
|
2347 |
template(sun_dyn_AdapterMethodHandle,OP_DROP_ARGS) \ |
|
2348 |
template(sun_dyn_AdapterMethodHandle,OP_COLLECT_ARGS) \ |
|
2349 |
template(sun_dyn_AdapterMethodHandle,OP_SPREAD_ARGS) \ |
|
2350 |
template(sun_dyn_AdapterMethodHandle,OP_FLYBY) \ |
|
2351 |
template(sun_dyn_AdapterMethodHandle,OP_RICOCHET) \ |
|
2352 |
template(sun_dyn_AdapterMethodHandle,CONV_OP_LIMIT) \ |
|
2353 |
template(sun_dyn_AdapterMethodHandle,CONV_OP_MASK) \ |
|
2354 |
template(sun_dyn_AdapterMethodHandle,CONV_VMINFO_MASK) \ |
|
2355 |
template(sun_dyn_AdapterMethodHandle,CONV_VMINFO_SHIFT) \ |
|
2356 |
template(sun_dyn_AdapterMethodHandle,CONV_OP_SHIFT) \ |
|
2357 |
template(sun_dyn_AdapterMethodHandle,CONV_DEST_TYPE_SHIFT) \ |
|
2358 |
template(sun_dyn_AdapterMethodHandle,CONV_SRC_TYPE_SHIFT) \ |
|
2359 |
template(sun_dyn_AdapterMethodHandle,CONV_STACK_MOVE_SHIFT) \ |
|
2360 |
template(sun_dyn_AdapterMethodHandle,CONV_STACK_MOVE_MASK) \ |
|
2361 |
/*end*/ |
|
2362 |
||
2363 |
#define ONE_PLUS(scope,value) 1+ |
|
2364 |
static const int con_value_count = EACH_NAMED_CON(ONE_PLUS) 0; |
|
2365 |
#define VALUE_COMMA(scope,value) scope::value, |
|
2366 |
static const int con_values[con_value_count+1] = { EACH_NAMED_CON(VALUE_COMMA) 0 }; |
|
2367 |
#define STRING_NULL(scope,value) #value "\0" |
|
2368 |
static const char con_names[] = { EACH_NAMED_CON(STRING_NULL) }; |
|
2369 |
||
2370 |
#undef ONE_PLUS |
|
2371 |
#undef VALUE_COMMA |
|
2372 |
#undef STRING_NULL |
|
2373 |
#undef EACH_NAMED_CON |
|
2374 |
#endif |
|
2375 |
||
2376 |
JVM_ENTRY(jint, MHI_getNamedCon(JNIEnv *env, jobject igcls, jint which, jobjectArray box_jh)) { |
|
2377 |
#ifndef PRODUCT |
|
2378 |
if (which >= 0 && which < con_value_count) { |
|
2379 |
int con = con_values[which]; |
|
2380 |
objArrayOop box = (objArrayOop) JNIHandles::resolve(box_jh); |
|
2381 |
if (box != NULL && box->klass() == Universe::objectArrayKlassObj() && box->length() > 0) { |
|
2382 |
const char* str = &con_names[0]; |
|
2383 |
for (int i = 0; i < which; i++) |
|
2384 |
str += strlen(str) + 1; // skip name and null |
|
2385 |
oop name = java_lang_String::create_oop_from_str(str, CHECK_0); |
|
2386 |
box->obj_at_put(0, name); |
|
2387 |
} |
|
2388 |
return con; |
|
2389 |
} |
|
2390 |
#endif |
|
2391 |
return 0; |
|
2392 |
} |
|
2393 |
JVM_END |
|
2394 |
||
2395 |
// void init(MemberName self, AccessibleObject ref) |
|
2396 |
JVM_ENTRY(void, MHI_init_Mem(JNIEnv *env, jobject igcls, jobject mname_jh, jobject target_jh)) { |
|
2397 |
if (mname_jh == NULL || target_jh == NULL) { THROW(vmSymbols::java_lang_InternalError()); } |
|
2398 |
Handle mname(THREAD, JNIHandles::resolve_non_null(mname_jh)); |
|
2399 |
oop target_oop = JNIHandles::resolve_non_null(target_jh); |
|
2400 |
MethodHandles::init_MemberName(mname(), target_oop); |
|
2401 |
} |
|
2402 |
JVM_END |
|
2403 |
||
2404 |
// void expand(MemberName self) |
|
2405 |
JVM_ENTRY(void, MHI_expand_Mem(JNIEnv *env, jobject igcls, jobject mname_jh)) { |
|
2406 |
if (mname_jh == NULL) { THROW(vmSymbols::java_lang_InternalError()); } |
|
2407 |
Handle mname(THREAD, JNIHandles::resolve_non_null(mname_jh)); |
|
2408 |
MethodHandles::expand_MemberName(mname, 0, CHECK); |
|
2409 |
} |
|
2410 |
JVM_END |
|
2411 |
||
2412 |
// void resolve(MemberName self, Class<?> caller) |
|
2413 |
JVM_ENTRY(void, MHI_resolve_Mem(JNIEnv *env, jobject igcls, jobject mname_jh, jclass caller_jh)) { |
|
2414 |
if (mname_jh == NULL) { THROW(vmSymbols::java_lang_InternalError()); } |
|
2415 |
Handle mname(THREAD, JNIHandles::resolve_non_null(mname_jh)); |
|
5420
586d3988e72b
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jrose
parents:
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diff
changeset
|
2416 |
|
586d3988e72b
6939134: JSR 292 adjustments to method handle invocation
jrose
parents:
5050
diff
changeset
|
2417 |
// The trusted Java code that calls this method should already have performed |
586d3988e72b
6939134: JSR 292 adjustments to method handle invocation
jrose
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5050
diff
changeset
|
2418 |
// access checks on behalf of the given caller. But, we can verify this. |
586d3988e72b
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jrose
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diff
changeset
|
2419 |
if (VerifyMethodHandles && caller_jh != NULL) { |
586d3988e72b
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diff
changeset
|
2420 |
klassOop reference_klass = java_lang_Class::as_klassOop(sun_dyn_MemberName::clazz(mname())); |
586d3988e72b
6939134: JSR 292 adjustments to method handle invocation
jrose
parents:
5050
diff
changeset
|
2421 |
if (reference_klass != NULL) { |
586d3988e72b
6939134: JSR 292 adjustments to method handle invocation
jrose
parents:
5050
diff
changeset
|
2422 |
// Emulate LinkResolver::check_klass_accessability. |
586d3988e72b
6939134: JSR 292 adjustments to method handle invocation
jrose
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diff
changeset
|
2423 |
klassOop caller = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(caller_jh)); |
586d3988e72b
6939134: JSR 292 adjustments to method handle invocation
jrose
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diff
changeset
|
2424 |
if (!Reflection::verify_class_access(caller, |
586d3988e72b
6939134: JSR 292 adjustments to method handle invocation
jrose
parents:
5050
diff
changeset
|
2425 |
reference_klass, |
586d3988e72b
6939134: JSR 292 adjustments to method handle invocation
jrose
parents:
5050
diff
changeset
|
2426 |
true)) { |
586d3988e72b
6939134: JSR 292 adjustments to method handle invocation
jrose
parents:
5050
diff
changeset
|
2427 |
THROW_MSG(vmSymbols::java_lang_InternalError(), Klass::cast(reference_klass)->external_name()); |
586d3988e72b
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jrose
parents:
5050
diff
changeset
|
2428 |
} |
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6939134: JSR 292 adjustments to method handle invocation
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diff
changeset
|
2429 |
} |
586d3988e72b
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jrose
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diff
changeset
|
2430 |
} |
586d3988e72b
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diff
changeset
|
2431 |
|
2534 | 2432 |
MethodHandles::resolve_MemberName(mname, CHECK); |
2433 |
} |
|
2434 |
JVM_END |
|
2435 |
||
2436 |
// static native int getMembers(Class<?> defc, String matchName, String matchSig, |
|
2437 |
// int matchFlags, Class<?> caller, int skip, MemberName[] results); |
|
2438 |
JVM_ENTRY(jint, MHI_getMembers(JNIEnv *env, jobject igcls, |
|
2439 |
jclass clazz_jh, jstring name_jh, jstring sig_jh, |
|
2440 |
int mflags, jclass caller_jh, jint skip, jobjectArray results_jh)) { |
|
2441 |
if (clazz_jh == NULL || results_jh == NULL) return -1; |
|
2442 |
klassOop k_oop = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(clazz_jh)); |
|
2443 |
||
2444 |
objArrayOop results = (objArrayOop) JNIHandles::resolve(results_jh); |
|
2445 |
if (results == NULL || !results->is_objArray()) return -1; |
|
2446 |
||
2447 |
symbolOop name = NULL, sig = NULL; |
|
2448 |
if (name_jh != NULL) { |
|
2449 |
name = java_lang_String::as_symbol_or_null(JNIHandles::resolve_non_null(name_jh)); |
|
2450 |
if (name == NULL) return 0; // a match is not possible |
|
2451 |
} |
|
2452 |
if (sig_jh != NULL) { |
|
2453 |
sig = java_lang_String::as_symbol_or_null(JNIHandles::resolve_non_null(sig_jh)); |
|
2454 |
if (sig == NULL) return 0; // a match is not possible |
|
2455 |
} |
|
2456 |
||
2457 |
klassOop caller = NULL; |
|
2458 |
if (caller_jh != NULL) { |
|
2459 |
oop caller_oop = JNIHandles::resolve_non_null(caller_jh); |
|
2460 |
if (!java_lang_Class::is_instance(caller_oop)) return -1; |
|
2461 |
caller = java_lang_Class::as_klassOop(caller_oop); |
|
2462 |
} |
|
2463 |
||
2464 |
if (name != NULL && sig != NULL && results != NULL) { |
|
2465 |
// try a direct resolve |
|
2466 |
// %%% TO DO |
|
2467 |
} |
|
2468 |
||
2469 |
int res = MethodHandles::find_MemberNames(k_oop, name, sig, mflags, |
|
2470 |
caller, skip, results); |
|
2471 |
// TO DO: expand at least some of the MemberNames, to avoid massive callbacks |
|
2472 |
return res; |
|
2473 |
} |
|
2474 |
JVM_END |
|
2475 |
||
5420
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|
2476 |
JVM_ENTRY(void, MHI_registerBootstrap(JNIEnv *env, jobject igcls, jclass caller_jh, jobject bsm_jh)) { |
586d3988e72b
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diff
changeset
|
2477 |
instanceKlassHandle ik = MethodHandles::resolve_instance_klass(caller_jh, THREAD); |
586d3988e72b
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diff
changeset
|
2478 |
ik->link_class(CHECK); |
586d3988e72b
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diff
changeset
|
2479 |
if (!java_dyn_MethodHandle::is_instance(JNIHandles::resolve(bsm_jh))) { |
586d3988e72b
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|
2480 |
THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "method handle"); |
586d3988e72b
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diff
changeset
|
2481 |
} |
586d3988e72b
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jrose
parents:
5050
diff
changeset
|
2482 |
const char* err = NULL; |
586d3988e72b
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jrose
parents:
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diff
changeset
|
2483 |
if (ik->is_initialized() || ik->is_in_error_state()) { |
586d3988e72b
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5050
diff
changeset
|
2484 |
err = "too late: class is already initialized"; |
586d3988e72b
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jrose
parents:
5050
diff
changeset
|
2485 |
} else { |
586d3988e72b
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parents:
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diff
changeset
|
2486 |
ObjectLocker ol(ik, THREAD); // note: this should be a recursive lock |
586d3988e72b
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diff
changeset
|
2487 |
if (ik->is_not_initialized() || |
586d3988e72b
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5050
diff
changeset
|
2488 |
(ik->is_being_initialized() && ik->is_reentrant_initialization(THREAD))) { |
586d3988e72b
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diff
changeset
|
2489 |
if (ik->bootstrap_method() != NULL) { |
586d3988e72b
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5050
diff
changeset
|
2490 |
err = "class is already equipped with a bootstrap method"; |
586d3988e72b
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jrose
parents:
5050
diff
changeset
|
2491 |
} else { |
586d3988e72b
6939134: JSR 292 adjustments to method handle invocation
jrose
parents:
5050
diff
changeset
|
2492 |
ik->set_bootstrap_method(JNIHandles::resolve_non_null(bsm_jh)); |
586d3988e72b
6939134: JSR 292 adjustments to method handle invocation
jrose
parents:
5050
diff
changeset
|
2493 |
err = NULL; |
586d3988e72b
6939134: JSR 292 adjustments to method handle invocation
jrose
parents:
5050
diff
changeset
|
2494 |
} |
586d3988e72b
6939134: JSR 292 adjustments to method handle invocation
jrose
parents:
5050
diff
changeset
|
2495 |
} else { |
586d3988e72b
6939134: JSR 292 adjustments to method handle invocation
jrose
parents:
5050
diff
changeset
|
2496 |
err = "class is already initialized"; |
586d3988e72b
6939134: JSR 292 adjustments to method handle invocation
jrose
parents:
5050
diff
changeset
|
2497 |
if (ik->is_being_initialized()) |
586d3988e72b
6939134: JSR 292 adjustments to method handle invocation
jrose
parents:
5050
diff
changeset
|
2498 |
err = "class is already being initialized in a different thread"; |
586d3988e72b
6939134: JSR 292 adjustments to method handle invocation
jrose
parents:
5050
diff
changeset
|
2499 |
} |
586d3988e72b
6939134: JSR 292 adjustments to method handle invocation
jrose
parents:
5050
diff
changeset
|
2500 |
} |
586d3988e72b
6939134: JSR 292 adjustments to method handle invocation
jrose
parents:
5050
diff
changeset
|
2501 |
if (err != NULL) { |
586d3988e72b
6939134: JSR 292 adjustments to method handle invocation
jrose
parents:
5050
diff
changeset
|
2502 |
THROW_MSG(vmSymbols::java_lang_IllegalStateException(), err); |
586d3988e72b
6939134: JSR 292 adjustments to method handle invocation
jrose
parents:
5050
diff
changeset
|
2503 |
} |
586d3988e72b
6939134: JSR 292 adjustments to method handle invocation
jrose
parents:
5050
diff
changeset
|
2504 |
} |
586d3988e72b
6939134: JSR 292 adjustments to method handle invocation
jrose
parents:
5050
diff
changeset
|
2505 |
JVM_END |
2534 | 2506 |
|
5420
586d3988e72b
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jrose
parents:
5050
diff
changeset
|
2507 |
JVM_ENTRY(jobject, MHI_getBootstrap(JNIEnv *env, jobject igcls, jclass caller_jh)) { |
586d3988e72b
6939134: JSR 292 adjustments to method handle invocation
jrose
parents:
5050
diff
changeset
|
2508 |
instanceKlassHandle ik = MethodHandles::resolve_instance_klass(caller_jh, THREAD); |
586d3988e72b
6939134: JSR 292 adjustments to method handle invocation
jrose
parents:
5050
diff
changeset
|
2509 |
return JNIHandles::make_local(THREAD, ik->bootstrap_method()); |
586d3988e72b
6939134: JSR 292 adjustments to method handle invocation
jrose
parents:
5050
diff
changeset
|
2510 |
} |
586d3988e72b
6939134: JSR 292 adjustments to method handle invocation
jrose
parents:
5050
diff
changeset
|
2511 |
JVM_END |
586d3988e72b
6939134: JSR 292 adjustments to method handle invocation
jrose
parents:
5050
diff
changeset
|
2512 |
|
586d3988e72b
6939134: JSR 292 adjustments to method handle invocation
jrose
parents:
5050
diff
changeset
|
2513 |
JVM_ENTRY(void, MHI_setCallSiteTarget(JNIEnv *env, jobject igcls, jobject site_jh, jobject target_jh)) { |
2570
ecc7862946d4
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
2534
diff
changeset
|
2514 |
// No special action required, yet. |
ecc7862946d4
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
2534
diff
changeset
|
2515 |
oop site_oop = JNIHandles::resolve(site_jh); |
5420
586d3988e72b
6939134: JSR 292 adjustments to method handle invocation
jrose
parents:
5050
diff
changeset
|
2516 |
if (!java_dyn_CallSite::is_instance(site_oop)) |
586d3988e72b
6939134: JSR 292 adjustments to method handle invocation
jrose
parents:
5050
diff
changeset
|
2517 |
THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "not a CallSite"); |
4429
d7eb4e2099aa
6858164: invokedynamic code needs some cleanup (post-6655638)
jrose
parents:
4094
diff
changeset
|
2518 |
java_dyn_CallSite::set_target(site_oop, JNIHandles::resolve(target_jh)); |
2570
ecc7862946d4
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
2534
diff
changeset
|
2519 |
} |
ecc7862946d4
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
2534
diff
changeset
|
2520 |
JVM_END |
ecc7862946d4
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
2534
diff
changeset
|
2521 |
|
ecc7862946d4
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
2534
diff
changeset
|
2522 |
|
2534 | 2523 |
/// JVM_RegisterMethodHandleMethods |
2524 |
||
2525 |
#define ADR "J" |
|
2526 |
||
2527 |
#define LANG "Ljava/lang/" |
|
2528 |
#define JDYN "Ljava/dyn/" |
|
2529 |
#define IDYN "Lsun/dyn/" |
|
2530 |
||
2531 |
#define OBJ LANG"Object;" |
|
2532 |
#define CLS LANG"Class;" |
|
2533 |
#define STRG LANG"String;" |
|
4429
d7eb4e2099aa
6858164: invokedynamic code needs some cleanup (post-6655638)
jrose
parents:
4094
diff
changeset
|
2534 |
#define CST JDYN"CallSite;" |
2534 | 2535 |
#define MT JDYN"MethodType;" |
2536 |
#define MH JDYN"MethodHandle;" |
|
2537 |
#define MHI IDYN"MethodHandleImpl;" |
|
2538 |
#define MEM IDYN"MemberName;" |
|
2539 |
#define AMH IDYN"AdapterMethodHandle;" |
|
2540 |
#define BMH IDYN"BoundMethodHandle;" |
|
2541 |
#define DMH IDYN"DirectMethodHandle;" |
|
2542 |
||
2543 |
#define CC (char*) /*cast a literal from (const char*)*/ |
|
2544 |
#define FN_PTR(f) CAST_FROM_FN_PTR(void*, &f) |
|
2545 |
||
2546 |
// These are the native methods on sun.dyn.MethodHandleNatives. |
|
2547 |
static JNINativeMethod methods[] = { |
|
2548 |
// void init(MemberName self, AccessibleObject ref) |
|
2549 |
{CC"init", CC"("AMH""MH"I)V", FN_PTR(MHI_init_AMH)}, |
|
2550 |
{CC"init", CC"("BMH""OBJ"I)V", FN_PTR(MHI_init_BMH)}, |
|
2551 |
{CC"init", CC"("DMH""OBJ"Z"CLS")V", FN_PTR(MHI_init_DMH)}, |
|
2552 |
{CC"init", CC"("MT")V", FN_PTR(MHI_init_MT)}, |
|
2553 |
{CC"init", CC"("MEM""OBJ")V", FN_PTR(MHI_init_Mem)}, |
|
2554 |
{CC"expand", CC"("MEM")V", FN_PTR(MHI_expand_Mem)}, |
|
2555 |
{CC"resolve", CC"("MEM""CLS")V", FN_PTR(MHI_resolve_Mem)}, |
|
2556 |
{CC"getTarget", CC"("MH"I)"OBJ, FN_PTR(MHI_getTarget)}, |
|
2557 |
{CC"getConstant", CC"(I)I", FN_PTR(MHI_getConstant)}, |
|
2558 |
// static native int getNamedCon(int which, Object[] name) |
|
2559 |
{CC"getNamedCon", CC"(I["OBJ")I", FN_PTR(MHI_getNamedCon)}, |
|
2560 |
// static native int getMembers(Class<?> defc, String matchName, String matchSig, |
|
2561 |
// int matchFlags, Class<?> caller, int skip, MemberName[] results); |
|
2562 |
{CC"getMembers", CC"("CLS""STRG""STRG"I"CLS"I["MEM")I", FN_PTR(MHI_getMembers)} |
|
2563 |
}; |
|
2564 |
||
2570
ecc7862946d4
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
2534
diff
changeset
|
2565 |
// More entry points specifically for EnableInvokeDynamic. |
ecc7862946d4
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
2534
diff
changeset
|
2566 |
static JNINativeMethod methods2[] = { |
5420
586d3988e72b
6939134: JSR 292 adjustments to method handle invocation
jrose
parents:
5050
diff
changeset
|
2567 |
{CC"registerBootstrap", CC"("CLS MH")V", FN_PTR(MHI_registerBootstrap)}, |
586d3988e72b
6939134: JSR 292 adjustments to method handle invocation
jrose
parents:
5050
diff
changeset
|
2568 |
{CC"getBootstrap", CC"("CLS")"MH, FN_PTR(MHI_getBootstrap)}, |
586d3988e72b
6939134: JSR 292 adjustments to method handle invocation
jrose
parents:
5050
diff
changeset
|
2569 |
{CC"setCallSiteTarget", CC"("CST MH")V", FN_PTR(MHI_setCallSiteTarget)} |
2570
ecc7862946d4
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
2534
diff
changeset
|
2570 |
}; |
ecc7862946d4
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
2534
diff
changeset
|
2571 |
|
2534 | 2572 |
|
2573 |
// This one function is exported, used by NativeLookup. |
|
2574 |
||
2575 |
JVM_ENTRY(void, JVM_RegisterMethodHandleMethods(JNIEnv *env, jclass MHN_class)) { |
|
2576 |
assert(MethodHandles::spot_check_entry_names(), "entry enum is OK"); |
|
2577 |
||
2570
ecc7862946d4
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
2534
diff
changeset
|
2578 |
// note: this explicit warning-producing stuff will be replaced by auto-detection of the JSR 292 classes |
ecc7862946d4
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
2534
diff
changeset
|
2579 |
|
2534 | 2580 |
if (!EnableMethodHandles) { |
4094
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
2581 |
warning("JSR 292 method handles are disabled in this JVM. Use -XX:+UnlockExperimentalVMOptions -XX:+EnableMethodHandles to enable."); |
2534 | 2582 |
return; // bind nothing |
2583 |
} |
|
2584 |
||
4094
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
2585 |
bool enable_MH = true; |
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
2586 |
|
2534 | 2587 |
{ |
2588 |
ThreadToNativeFromVM ttnfv(thread); |
|
2589 |
||
2590 |
int status = env->RegisterNatives(MHN_class, methods, sizeof(methods)/sizeof(JNINativeMethod)); |
|
2591 |
if (env->ExceptionOccurred()) { |
|
2592 |
MethodHandles::set_enabled(false); |
|
2593 |
warning("JSR 292 method handle code is mismatched to this JVM. Disabling support."); |
|
4094
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
2594 |
enable_MH = false; |
2534 | 2595 |
env->ExceptionClear(); |
2596 |
} |
|
2597 |
} |
|
2570
ecc7862946d4
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
2534
diff
changeset
|
2598 |
|
4094
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
2599 |
if (enable_MH) { |
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
2600 |
KlassHandle MHI_klass = SystemDictionaryHandles::MethodHandleImpl_klass(); |
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
2601 |
if (MHI_klass.not_null()) { |
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
2602 |
symbolHandle raiseException_name = oopFactory::new_symbol_handle("raiseException", CHECK); |
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
2603 |
symbolHandle raiseException_sig = oopFactory::new_symbol_handle("(ILjava/lang/Object;Ljava/lang/Object;)V", CHECK); |
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
2604 |
methodOop raiseException_method = instanceKlass::cast(MHI_klass->as_klassOop()) |
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
2605 |
->find_method(raiseException_name(), raiseException_sig()); |
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
2606 |
if (raiseException_method != NULL && raiseException_method->is_static()) { |
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
2607 |
MethodHandles::set_raise_exception_method(raiseException_method); |
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
2608 |
} else { |
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
2609 |
warning("JSR 292 method handle code is mismatched to this JVM. Disabling support."); |
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
2610 |
enable_MH = false; |
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
2611 |
} |
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
2612 |
} |
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
2613 |
} |
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
2614 |
|
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
2615 |
if (enable_MH) { |
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
2616 |
MethodHandles::set_enabled(true); |
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
2617 |
} |
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
2618 |
|
2570
ecc7862946d4
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
2534
diff
changeset
|
2619 |
if (!EnableInvokeDynamic) { |
4094
1f424b2b2171
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
2570
diff
changeset
|
2620 |
warning("JSR 292 invokedynamic is disabled in this JVM. Use -XX:+UnlockExperimentalVMOptions -XX:+EnableInvokeDynamic to enable."); |
2570
ecc7862946d4
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jrose
parents:
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diff
changeset
|
2621 |
return; // bind nothing |
ecc7862946d4
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
2534
diff
changeset
|
2622 |
} |
ecc7862946d4
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
2534
diff
changeset
|
2623 |
|
ecc7862946d4
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
2534
diff
changeset
|
2624 |
{ |
ecc7862946d4
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
2534
diff
changeset
|
2625 |
ThreadToNativeFromVM ttnfv(thread); |
ecc7862946d4
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
2534
diff
changeset
|
2626 |
|
ecc7862946d4
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
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diff
changeset
|
2627 |
int status = env->RegisterNatives(MHN_class, methods2, sizeof(methods2)/sizeof(JNINativeMethod)); |
ecc7862946d4
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
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diff
changeset
|
2628 |
if (env->ExceptionOccurred()) { |
ecc7862946d4
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
2534
diff
changeset
|
2629 |
MethodHandles::set_enabled(false); |
ecc7862946d4
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
2534
diff
changeset
|
2630 |
warning("JSR 292 method handle code is mismatched to this JVM. Disabling support."); |
ecc7862946d4
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
2534
diff
changeset
|
2631 |
env->ExceptionClear(); |
ecc7862946d4
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
2534
diff
changeset
|
2632 |
} else { |
ecc7862946d4
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
2534
diff
changeset
|
2633 |
MethodHandles::set_enabled(true); |
ecc7862946d4
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
2534
diff
changeset
|
2634 |
} |
ecc7862946d4
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
2534
diff
changeset
|
2635 |
} |
2534 | 2636 |
} |
2637 |
JVM_END |