jdk8-mips64-public/hotspot: src/share/vm/prims/methodHandles.hpp@b2e698d2276c (annotated)

src/share/vm/prims/methodHandles.hpp@b2e698d2276c (annotated)

src/share/vm/prims/methodHandles.hpp

Fri, 13 Sep 2013 22:38:02 -0400

author: drchase
date: Fri, 13 Sep 2013 22:38:02 -0400
changeset 5732: b2e698d2276c
parent 5178: b7fa10a3a69a
child 6246: 9063bd8808a7
permissions: -rw-r--r--

8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
Summary: Enhance method resolution and resulting data structures, plus some refactoring.
Reviewed-by: twisti, acorn, jrose

 /*
  * Copyright (c) 2008, 2013, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
  * under the terms of the GNU General Public License version 2 only, as
  * published by the Free Software Foundation.
  *
  * This code is distributed in the hope that it will be useful, but WITHOUT
  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  * version 2 for more details (a copy is included in the LICENSE file that
  * accompanied this code).
  *
  * You should have received a copy of the GNU General Public License version
  * 2 along with this work; if not, write to the Free Software Foundation,
  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  *
  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  * or visit www.oracle.com if you need additional information or have any
  * questions.
  *
  */
 #ifndef SHARE_VM_PRIMS_METHODHANDLES_HPP
 #define SHARE_VM_PRIMS_METHODHANDLES_HPP
 #include "classfile/javaClasses.hpp"
 #include "classfile/vmSymbols.hpp"
 #include "runtime/frame.inline.hpp"
 #include "runtime/globals.hpp"
 #include "runtime/interfaceSupport.hpp"
 class MacroAssembler;
 class Label;
 class MethodHandles: AllStatic {
   // JVM support for MethodHandle, MethodType, and related types
   // in java.lang.invoke and sun.invoke.
   // See also  javaClasses for layouts java_lang_invoke_Method{Handle,Type,Type::Form}.
  public:
  public:
   static bool enabled()                         { return _enabled; }
   static void set_enabled(bool z);
  private:
   static bool _enabled;
   // Adapters.
   static MethodHandlesAdapterBlob* _adapter_code;
   // utility functions for reifying names and types
   static oop field_name_or_null(Symbol* s);
   static oop field_signature_type_or_null(Symbol* s);
  public:
   // working with member names
   static Handle resolve_MemberName(Handle mname, TRAPS); // compute vmtarget/vmindex from name/type
   static void expand_MemberName(Handle mname, int suppress, TRAPS);  // expand defc/name/type if missing
   static Handle new_MemberName(TRAPS);  // must be followed by init_MemberName
   static oop init_MemberName(Handle mname_h, Handle target_h); // compute vmtarget/vmindex from target
   static oop init_field_MemberName(Handle mname_h, fieldDescriptor& fd, bool is_setter = false);
   static oop init_method_MemberName(Handle mname_h, CallInfo& info);
   static int method_ref_kind(Method* m, bool do_dispatch_if_possible = true);
   static int find_MemberNames(KlassHandle k, Symbol* name, Symbol* sig,
                               int mflags, KlassHandle caller,
                               int skip, objArrayHandle results);
   // bit values for suppress argument to expand_MemberName:
   enum { _suppress_defc = 1, _suppress_name = 2, _suppress_type = 4 };
   // Generate MethodHandles adapters.
                               static void generate_adapters();
   // Called from MethodHandlesAdapterGenerator.
   static address generate_method_handle_interpreter_entry(MacroAssembler* _masm, vmIntrinsics::ID iid);
   static void generate_method_handle_dispatch(MacroAssembler* _masm,
                                               vmIntrinsics::ID iid,
                                               Register receiver_reg,
                                               Register member_reg,
                                               bool for_compiler_entry);
   // Queries
   static bool is_signature_polymorphic(vmIntrinsics::ID iid) {
     return (iid >= vmIntrinsics::FIRST_MH_SIG_POLY &&
             iid <= vmIntrinsics::LAST_MH_SIG_POLY);
   }
   static bool is_signature_polymorphic_intrinsic(vmIntrinsics::ID iid) {
     assert(is_signature_polymorphic(iid), "");
     // Most sig-poly methods are intrinsics which do not require an
     // appeal to Java for adapter code.
     return (iid != vmIntrinsics::_invokeGeneric);
   }
   static bool is_signature_polymorphic_static(vmIntrinsics::ID iid) {
     assert(is_signature_polymorphic(iid), "");
     return (iid >= vmIntrinsics::FIRST_MH_STATIC &&
             iid <= vmIntrinsics::LAST_MH_SIG_POLY);
   }
   static bool has_member_arg(vmIntrinsics::ID iid) {
     assert(is_signature_polymorphic(iid), "");
     return (iid >= vmIntrinsics::_linkToVirtual &&
             iid <= vmIntrinsics::_linkToInterface);
   }
   static bool has_member_arg(Symbol* klass, Symbol* name) {
     if ((klass == vmSymbols::java_lang_invoke_MethodHandle()) &&
         is_signature_polymorphic_name(name)) {
       vmIntrinsics::ID iid = signature_polymorphic_name_id(name);
       return has_member_arg(iid);
     }
     return false;
   }
   static Symbol* signature_polymorphic_intrinsic_name(vmIntrinsics::ID iid);
   static int signature_polymorphic_intrinsic_ref_kind(vmIntrinsics::ID iid);
   static vmIntrinsics::ID signature_polymorphic_name_id(Klass* klass, Symbol* name);
   static vmIntrinsics::ID signature_polymorphic_name_id(Symbol* name);
   static bool is_signature_polymorphic_name(Symbol* name) {
     return signature_polymorphic_name_id(name) != vmIntrinsics::_none;
   }
   static bool is_method_handle_invoke_name(Klass* klass, Symbol* name);
   static bool is_signature_polymorphic_name(Klass* klass, Symbol* name) {
     return signature_polymorphic_name_id(klass, name) != vmIntrinsics::_none;
   }
   enum {
     // format of query to getConstant:
     GC_COUNT_GWT = 4,
     GC_LAMBDA_SUPPORT = 5
   };
   static int get_named_constant(int which, Handle name_box, TRAPS);
 public:
   static Symbol* lookup_signature(oop type_str, bool polymorphic, TRAPS);  // use TempNewSymbol
   static Symbol* lookup_basic_type_signature(Symbol* sig, bool keep_last_arg, TRAPS);  // use TempNewSymbol
   static Symbol* lookup_basic_type_signature(Symbol* sig, TRAPS) {
     return lookup_basic_type_signature(sig, false, THREAD);
   }
   static bool is_basic_type_signature(Symbol* sig);
   static Symbol* lookup_method_type(Symbol* msig, Handle mtype, TRAPS);
   static void print_as_method_type_on(outputStream* st, Symbol* sig) {
     print_as_basic_type_signature_on(st, sig, true, true);
   }
   static void print_as_basic_type_signature_on(outputStream* st, Symbol* sig, bool keep_arrays = false, bool keep_basic_names = false);
   // decoding CONSTANT_MethodHandle constants
   enum { JVM_REF_MIN = JVM_REF_getField, JVM_REF_MAX = JVM_REF_invokeInterface };
   static bool ref_kind_is_valid(int ref_kind) {
     return (ref_kind >= JVM_REF_MIN && ref_kind <= JVM_REF_MAX);
   }
   static bool ref_kind_is_field(int ref_kind) {
     assert(ref_kind_is_valid(ref_kind), "");
     return (ref_kind <= JVM_REF_putStatic);
   }
   static bool ref_kind_is_getter(int ref_kind) {
     assert(ref_kind_is_valid(ref_kind), "");
     return (ref_kind <= JVM_REF_getStatic);
   }
   static bool ref_kind_is_setter(int ref_kind) {
     return ref_kind_is_field(ref_kind) && !ref_kind_is_getter(ref_kind);
   }
   static bool ref_kind_is_method(int ref_kind) {
     return !ref_kind_is_field(ref_kind) && (ref_kind != JVM_REF_newInvokeSpecial);
   }
   static bool ref_kind_has_receiver(int ref_kind) {
     assert(ref_kind_is_valid(ref_kind), "");
     return (ref_kind & 1) != 0;
   }
   static bool ref_kind_is_static(int ref_kind) {
     return !ref_kind_has_receiver(ref_kind) && (ref_kind != JVM_REF_newInvokeSpecial);
   }
   static bool ref_kind_does_dispatch(int ref_kind) {
     return (ref_kind == JVM_REF_invokeVirtual ||
             ref_kind == JVM_REF_invokeInterface);
   }
 #ifdef TARGET_ARCH_x86
 # include "methodHandles_x86.hpp"
 #endif
 #ifdef TARGET_ARCH_sparc
 # include "methodHandles_sparc.hpp"
 #endif
 #ifdef TARGET_ARCH_zero
 # include "methodHandles_zero.hpp"
 #endif
 #ifdef TARGET_ARCH_arm
 # include "methodHandles_arm.hpp"
 #endif
 #ifdef TARGET_ARCH_ppc
 # include "methodHandles_ppc.hpp"
 #endif
   // Tracing
   static void trace_method_handle(MacroAssembler* _masm, const char* adaptername) PRODUCT_RETURN;
   static void trace_method_handle_interpreter_entry(MacroAssembler* _masm, vmIntrinsics::ID iid) {
     if (TraceMethodHandles) {
       const char* name = vmIntrinsics::name_at(iid);
       if (*name == '_')  name += 1;
       const size_t len = strlen(name) + 50;
       char* qname = NEW_C_HEAP_ARRAY(char, len, mtInternal);
       const char* suffix = "";
       if (is_signature_polymorphic(iid)) {
         if (is_signature_polymorphic_static(iid))
           suffix = "/static";
         else
           suffix = "/private";
       }
       jio_snprintf(qname, len, "MethodHandle::interpreter_entry::%s%s", name, suffix);
       trace_method_handle(_masm, qname);
       // Note:  Don't free the allocated char array because it's used
       // during runtime.
     }
   }
 };
 //------------------------------------------------------------------------------
 // MethodHandlesAdapterGenerator
 //
 class MethodHandlesAdapterGenerator : public StubCodeGenerator {
 public:
   MethodHandlesAdapterGenerator(CodeBuffer* code) : StubCodeGenerator(code, PrintMethodHandleStubs) {}
   void generate();
 };
 //------------------------------------------------------------------------------
 // MemberNameTable
 //
 class MemberNameTable : public GrowableArray<jweak> {
  public:
   MemberNameTable(int methods_cnt);
   ~MemberNameTable();
   void add_member_name(int index, jweak mem_name_ref);
   oop  get_member_name(int index);
 #if INCLUDE_JVMTI
  public:
   // RedefineClasses() API support:
   // If a MemberName refers to old_method then update it
   // to refer to new_method.
   void adjust_method_entries(Method** old_methods, Method** new_methods,
                              int methods_length, bool *trace_name_printed);
  private:
   oop find_member_name_by_method(Method* old_method);
 #endif // INCLUDE_JVMTI
 };
 #endif // SHARE_VM_PRIMS_METHODHANDLES_HPP

Mercurial > jdk8-mips64-public > hotspot / annotate

src/share/vm/prims/methodHandles.hpp@b2e698d2276c (annotated)

src/share/vm/prims/methodHandles.hpp