jdk8-mips64-public/hotspot: src/share/vm/prims/methodHandles.hpp@04ff2f6cd0eb

     1 /*

     2  * Copyright (c) 2008, 2014, Oracle and/or its affiliates. All rights reserved.

     3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

     4  *

     5  * This code is free software; you can redistribute it and/or modify it

     6  * under the terms of the GNU General Public License version 2 only, as

     7  * published by the Free Software Foundation.

     8  *

     9  * This code is distributed in the hope that it will be useful, but WITHOUT

    10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    12  * version 2 for more details (a copy is included in the LICENSE file that

    13  * accompanied this code).

    14  *

    15  * You should have received a copy of the GNU General Public License version

    16  * 2 along with this work; if not, write to the Free Software Foundation,

    17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    18  *

    19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

    20  * or visit www.oracle.com if you need additional information or have any

    21  * questions.

    22  *

    23  */

    25 /*

    26  * This file has been modified by Loongson Technology in 2015. These

    27  * modifications are Copyright (c) 2015 Loongson Technology, and are made

    28  * available on the same license terms set forth above.

    29  */

    31 #ifndef SHARE_VM_PRIMS_METHODHANDLES_HPP

    32 #define SHARE_VM_PRIMS_METHODHANDLES_HPP

    34 #include "classfile/javaClasses.hpp"

    35 #include "classfile/vmSymbols.hpp"

    36 #include "runtime/frame.inline.hpp"

    37 #include "runtime/globals.hpp"

    38 #include "runtime/interfaceSupport.hpp"

    40 class MacroAssembler;

    41 class Label;

    43 class MethodHandles: AllStatic {

    44   // JVM support for MethodHandle, MethodType, and related types

    45   // in java.lang.invoke and sun.invoke.

    46   // See also  javaClasses for layouts java_lang_invoke_Method{Handle,Type,Type::Form}.

    47  public:

    48  public:

    49   static bool enabled()                         { return _enabled; }

    50   static void set_enabled(bool z);

    52  private:

    53   static bool _enabled;

    55   // Adapters.

    56   static MethodHandlesAdapterBlob* _adapter_code;

    58   // utility functions for reifying names and types

    59   static oop field_name_or_null(Symbol* s);

    60   static oop field_signature_type_or_null(Symbol* s);

    62  public:

    63   // working with member names

    64   static Handle resolve_MemberName(Handle mname, KlassHandle caller, TRAPS); // compute vmtarget/vmindex from name/type

    65   static void expand_MemberName(Handle mname, int suppress, TRAPS);  // expand defc/name/type if missing

    66   static Handle new_MemberName(TRAPS);  // must be followed by init_MemberName

    67   static oop init_MemberName(Handle mname_h, Handle target_h); // compute vmtarget/vmindex from target

    68   static oop init_field_MemberName(Handle mname_h, fieldDescriptor& fd, bool is_setter = false);

    69   static oop init_method_MemberName(Handle mname_h, CallInfo& info);

    70   static int method_ref_kind(Method* m, bool do_dispatch_if_possible = true);

    71   static int find_MemberNames(KlassHandle k, Symbol* name, Symbol* sig,

    72                               int mflags, KlassHandle caller,

    73                               int skip, objArrayHandle results);

    74   // bit values for suppress argument to expand_MemberName:

    75   enum { _suppress_defc = 1, _suppress_name = 2, _suppress_type = 4 };

    77   // Generate MethodHandles adapters.

    78                               static void generate_adapters();

    80   // Called from MethodHandlesAdapterGenerator.

    81   static address generate_method_handle_interpreter_entry(MacroAssembler* _masm, vmIntrinsics::ID iid);

    82   static void generate_method_handle_dispatch(MacroAssembler* _masm,

    83                                               vmIntrinsics::ID iid,

    84                                               Register receiver_reg,

    85                                               Register member_reg,

    86                                               bool for_compiler_entry);

    88   // Queries

    89   static bool is_signature_polymorphic(vmIntrinsics::ID iid) {

    90     return (iid >= vmIntrinsics::FIRST_MH_SIG_POLY &&

    91             iid <= vmIntrinsics::LAST_MH_SIG_POLY);

    92   }

    94   static bool is_signature_polymorphic_intrinsic(vmIntrinsics::ID iid) {

    95     assert(is_signature_polymorphic(iid), "");

    96     // Most sig-poly methods are intrinsics which do not require an

    97     // appeal to Java for adapter code.

    98     return (iid != vmIntrinsics::_invokeGeneric);

    99   }

   101   static bool is_signature_polymorphic_static(vmIntrinsics::ID iid) {

   102     assert(is_signature_polymorphic(iid), "");

   103     return (iid >= vmIntrinsics::FIRST_MH_STATIC &&

   104             iid <= vmIntrinsics::LAST_MH_SIG_POLY);

   105   }

   107   static bool has_member_arg(vmIntrinsics::ID iid) {

   108     assert(is_signature_polymorphic(iid), "");

   109     return (iid >= vmIntrinsics::_linkToVirtual &&

   110             iid <= vmIntrinsics::_linkToInterface);

   111   }

   112   static bool has_member_arg(Symbol* klass, Symbol* name) {

   113     if ((klass == vmSymbols::java_lang_invoke_MethodHandle()) &&

   114         is_signature_polymorphic_name(name)) {

   115       vmIntrinsics::ID iid = signature_polymorphic_name_id(name);

   116       return has_member_arg(iid);

   117     }

   118     return false;

   119   }

   121   static Symbol* signature_polymorphic_intrinsic_name(vmIntrinsics::ID iid);

   122   static int signature_polymorphic_intrinsic_ref_kind(vmIntrinsics::ID iid);

   124   static vmIntrinsics::ID signature_polymorphic_name_id(Klass* klass, Symbol* name);

   125   static vmIntrinsics::ID signature_polymorphic_name_id(Symbol* name);

   126   static bool is_signature_polymorphic_name(Symbol* name) {

   127     return signature_polymorphic_name_id(name) != vmIntrinsics::_none;

   128   }

   129   static bool is_method_handle_invoke_name(Klass* klass, Symbol* name);

   130   static bool is_signature_polymorphic_name(Klass* klass, Symbol* name) {

   131     return signature_polymorphic_name_id(klass, name) != vmIntrinsics::_none;

   132   }

   134   enum {

   135     // format of query to getConstant:

   136     GC_COUNT_GWT = 4,

   137     GC_LAMBDA_SUPPORT = 5

   138   };

   139   static int get_named_constant(int which, Handle name_box, TRAPS);

   141 public:

   142   static Symbol* lookup_signature(oop type_str, bool polymorphic, TRAPS);  // use TempNewSymbol

   143   static Symbol* lookup_basic_type_signature(Symbol* sig, bool keep_last_arg, TRAPS);  // use TempNewSymbol

   144   static Symbol* lookup_basic_type_signature(Symbol* sig, TRAPS) {

   145     return lookup_basic_type_signature(sig, false, THREAD);

   146   }

   147   static bool is_basic_type_signature(Symbol* sig);

   149   static Symbol* lookup_method_type(Symbol* msig, Handle mtype, TRAPS);

   151   static void print_as_method_type_on(outputStream* st, Symbol* sig) {

   152     print_as_basic_type_signature_on(st, sig, true, true);

   153   }

   154   static void print_as_basic_type_signature_on(outputStream* st, Symbol* sig, bool keep_arrays = false, bool keep_basic_names = false);

   156   // decoding CONSTANT_MethodHandle constants

   157   enum { JVM_REF_MIN = JVM_REF_getField, JVM_REF_MAX = JVM_REF_invokeInterface };

   158   static bool ref_kind_is_valid(int ref_kind) {

   159     return (ref_kind >= JVM_REF_MIN && ref_kind <= JVM_REF_MAX);

   160   }

   161   static bool ref_kind_is_field(int ref_kind) {

   162     assert(ref_kind_is_valid(ref_kind), "");

   163     return (ref_kind <= JVM_REF_putStatic);

   164   }

   165   static bool ref_kind_is_getter(int ref_kind) {

   166     assert(ref_kind_is_valid(ref_kind), "");

   167     return (ref_kind <= JVM_REF_getStatic);

   168   }

   169   static bool ref_kind_is_setter(int ref_kind) {

   170     return ref_kind_is_field(ref_kind) && !ref_kind_is_getter(ref_kind);

   171   }

   172   static bool ref_kind_is_method(int ref_kind) {

   173     return !ref_kind_is_field(ref_kind) && (ref_kind != JVM_REF_newInvokeSpecial);

   174   }

   175   static bool ref_kind_has_receiver(int ref_kind) {

   176     assert(ref_kind_is_valid(ref_kind), "");

   177     return (ref_kind & 1) != 0;

   178   }

   179   static bool ref_kind_is_static(int ref_kind) {

   180     return !ref_kind_has_receiver(ref_kind) && (ref_kind != JVM_REF_newInvokeSpecial);

   181   }

   182   static bool ref_kind_does_dispatch(int ref_kind) {

   183     return (ref_kind == JVM_REF_invokeVirtual ||

   184             ref_kind == JVM_REF_invokeInterface);

   185   }

   188 #ifdef TARGET_ARCH_x86

   189 # include "methodHandles_x86.hpp"

   190 #endif

   191 #ifdef TARGET_ARCH_sparc

   192 # include "methodHandles_sparc.hpp"

   193 #endif

   194 #ifdef TARGET_ARCH_zero

   195 # include "methodHandles_zero.hpp"

   196 #endif

   197 #ifdef TARGET_ARCH_arm

   198 # include "methodHandles_arm.hpp"

   199 #endif

   200 #ifdef TARGET_ARCH_ppc

   201 # include "methodHandles_ppc.hpp"

   202 #endif

   203 #ifdef TARGET_ARCH_mips

   204 # include "methodHandles_mips.hpp"

   205 #endif

   208   // Tracing

   209   static void trace_method_handle(MacroAssembler* _masm, const char* adaptername) PRODUCT_RETURN;

   210   static void trace_method_handle_interpreter_entry(MacroAssembler* _masm, vmIntrinsics::ID iid) {

   211     if (TraceMethodHandles) {

   212       const char* name = vmIntrinsics::name_at(iid);

   213       if (*name == '_')  name += 1;

   214       const size_t len = strlen(name) + 50;

   215       char* qname = NEW_C_HEAP_ARRAY(char, len, mtInternal);

   216       const char* suffix = "";

   217       if (is_signature_polymorphic(iid)) {

   218         if (is_signature_polymorphic_static(iid))

   219           suffix = "/static";

   220         else

   221           suffix = "/private";

   222       }

   223       jio_snprintf(qname, len, "MethodHandle::interpreter_entry::%s%s", name, suffix);

   224       trace_method_handle(_masm, qname);

   225       // Note:  Don't free the allocated char array because it's used

   226       // during runtime.

   227     }

   228   }

   229 };

   231 //------------------------------------------------------------------------------

   232 // MethodHandlesAdapterGenerator

   233 //

   234 class MethodHandlesAdapterGenerator : public StubCodeGenerator {

   235 public:

   236   MethodHandlesAdapterGenerator(CodeBuffer* code) : StubCodeGenerator(code, PrintMethodHandleStubs) {}

   238   void generate();

   239 };

   241 //------------------------------------------------------------------------------

   242 // MemberNameTable

   243 //

   245 class MemberNameTable : public GrowableArray<jweak> {

   246  public:

   247   MemberNameTable(int methods_cnt);

   248   ~MemberNameTable();

   249   void add_member_name(jweak mem_name_ref);

   251 #if INCLUDE_JVMTI

   252   // RedefineClasses() API support:

   253   // If a MemberName refers to old_method then update it to refer to new_method.

   254   void adjust_method_entries(InstanceKlass* holder, bool * trace_name_printed);

   255 #endif // INCLUDE_JVMTI

   256 };

   258 #endif // SHARE_VM_PRIMS_METHODHANDLES_HPP

Mercurial > jdk8-mips64-public > hotspot / file revision

src/share/vm/prims/methodHandles.hpp@04ff2f6cd0eb

src/share/vm/prims/methodHandles.hpp