duke@435: /* coleenp@4037: * Copyright (c) 1998, 2012, Oracle and/or its affiliates. All rights reserved. duke@435: * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. duke@435: * duke@435: * This code is free software; you can redistribute it and/or modify it duke@435: * under the terms of the GNU General Public License version 2 only, as duke@435: * published by the Free Software Foundation. duke@435: * duke@435: * This code is distributed in the hope that it will be useful, but WITHOUT duke@435: * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or duke@435: * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License duke@435: * version 2 for more details (a copy is included in the LICENSE file that duke@435: * accompanied this code). duke@435: * duke@435: * You should have received a copy of the GNU General Public License version duke@435: * 2 along with this work; if not, write to the Free Software Foundation, duke@435: * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. duke@435: * trims@1907: * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA trims@1907: * or visit www.oracle.com if you need additional information or have any trims@1907: * questions. duke@435: * duke@435: */ duke@435: stefank@2314: #ifndef SHARE_VM_OOPS_CPCACHEOOP_HPP stefank@2314: #define SHARE_VM_OOPS_CPCACHEOOP_HPP stefank@2314: stefank@2314: #include "interpreter/bytecodes.hpp" stefank@2314: #include "memory/allocation.hpp" stefank@2314: #include "utilities/array.hpp" stefank@2314: coleenp@4037: class PSPromotionManager; coleenp@4037: duke@435: // A ConstantPoolCacheEntry describes an individual entry of the constant duke@435: // pool cache. There's 2 principal kinds of entries: field entries for in- duke@435: // stance & static field access, and method entries for invokes. Some of duke@435: // the entry layout is shared and looks as follows: duke@435: // duke@435: // bit number |31 0| duke@435: // bit length |-8--|-8--|---16----| duke@435: // -------------------------------- coleenp@4037: // _indices [ b2 | b1 | index ] index = constant_pool_index coleenp@4037: // _f1 [ entry specific ] metadata ptr (method or klass) coleenp@4037: // _f2 [ entry specific ] vtable or res_ref index, or vfinal method ptr twisti@4133: // _flags [tos|0|F=1|0|0|0|f|v|0 |0000|field_index] (for field entries) twisti@4133: // bit length [ 4 |1| 1 |1|1|1|1|1|1 |-4--|----16-----] twisti@4133: // _flags [tos|0|F=0|M|A|I|f|0|vf|0000|00000|psize] (for method entries) twisti@4133: // bit length [ 4 |1| 1 |1|1|1|1|1|1 |-4--|--8--|--8--] duke@435: duke@435: // -------------------------------- duke@435: // duke@435: // with: duke@435: // index = original constant pool index duke@435: // b1 = bytecode 1 duke@435: // b2 = bytecode 2 twisti@3969: // psize = parameters size (method entries only) coleenp@4037: // field_index = index into field information in holder InstanceKlass duke@435: // The index max is 0xffff (max number of fields in constant pool) coleenp@4037: // and is multiplied by (InstanceKlass::next_offset) when accessing. coleenp@4037: // tos = TosState coleenp@4037: // F = the entry is for a field (or F=0 for a method) coleenp@4037: // A = call site has an appendix argument (loaded from resolved references) coleenp@4037: // I = interface call is forced virtual (must use a vtable index or vfinal) coleenp@4037: // f = field or method is final coleenp@4037: // v = field is volatile coleenp@4037: // vf = virtual but final (method entries only: is_vfinal()) duke@435: // duke@435: // The flags after TosState have the following interpretation: twisti@3969: // bit 27: 0 for fields, 1 for methods twisti@3969: // f flag true if field is marked final twisti@3969: // v flag true if field is volatile (only for fields) twisti@3969: // f2 flag true if f2 contains an oop (e.g., virtual final method) twisti@3969: // fv flag true if invokeinterface used for method in class Object duke@435: // duke@435: // The flags 31, 30, 29, 28 together build a 4 bit number 0 to 8 with the duke@435: // following mapping to the TosState states: duke@435: // duke@435: // btos: 0 duke@435: // ctos: 1 duke@435: // stos: 2 duke@435: // itos: 3 duke@435: // ltos: 4 duke@435: // ftos: 5 duke@435: // dtos: 6 duke@435: // atos: 7 duke@435: // vtos: 8 duke@435: // duke@435: // Entry specific: field entries: duke@435: // _indices = get (b1 section) and put (b2 section) bytecodes, original constant pool index coleenp@4037: // _f1 = field holder (as a java.lang.Class, not a Klass*) twisti@3969: // _f2 = field offset in bytes twisti@3969: // _flags = field type information, original FieldInfo index in field holder duke@435: // (field_index section) duke@435: // duke@435: // Entry specific: method entries: duke@435: // _indices = invoke code for f1 (b1 section), invoke code for f2 (b2 section), duke@435: // original constant pool index coleenp@4037: // _f1 = Method* for non-virtual calls, unused by virtual calls. twisti@3969: // for interface calls, which are essentially virtual but need a klass, coleenp@4037: // contains Klass* for the corresponding interface. twisti@3969: // for invokedynamic, f1 contains a site-specific CallSite object (as an appendix) twisti@3969: // for invokehandle, f1 contains a site-specific MethodType object (as an appendix) twisti@3969: // (upcoming metadata changes will move the appendix to a separate array) coleenp@4037: // _f2 = vtable/itable index (or final Method*) for virtual calls only, twisti@3969: // unused by non-virtual. The is_vfinal flag indicates this is a twisti@3969: // method pointer for a final method, not an index. twisti@3969: // _flags = method type info (t section), twisti@3969: // virtual final bit (vfinal), twisti@3969: // parameter size (psize section) duke@435: // duke@435: // Note: invokevirtual & invokespecial bytecodes can share the same constant duke@435: // pool entry and thus the same constant pool cache entry. All invoke duke@435: // bytecodes but invokevirtual use only _f1 and the corresponding b1 duke@435: // bytecode, while invokevirtual uses only _f2 and the corresponding duke@435: // b2 bytecode. The value of _flags is shared for both types of entries. duke@435: // duke@435: // The fields are volatile so that they are stored in the order written in the duke@435: // source code. The _indices field with the bytecode must be written last. duke@435: twisti@4253: class CallInfo; twisti@4253: duke@435: class ConstantPoolCacheEntry VALUE_OBJ_CLASS_SPEC { duke@435: friend class VMStructs; jrose@1161: friend class constantPoolCacheKlass; coleenp@4037: friend class ConstantPool; coleenp@4037: friend class InterpreterRuntime; jrose@1161: duke@435: private: duke@435: volatile intx _indices; // constant pool index & rewrite bytecodes coleenp@4037: volatile Metadata* _f1; // entry specific metadata field coleenp@4037: volatile intx _f2; // entry specific int/metadata field duke@435: volatile intx _flags; // flags duke@435: duke@435: duke@435: void set_bytecode_1(Bytecodes::Code code); duke@435: void set_bytecode_2(Bytecodes::Code code); coleenp@4037: void set_f1(Metadata* f1) { coleenp@4037: Metadata* existing_f1 = (Metadata*)_f1; // read once duke@435: assert(existing_f1 == NULL || existing_f1 == f1, "illegal field change"); coleenp@4037: _f1 = f1; duke@435: } coleenp@4037: void release_set_f1(Metadata* f1); twisti@3969: void set_f2(intx f2) { assert(_f2 == 0 || _f2 == f2, "illegal field change"); _f2 = f2; } coleenp@4037: void set_f2_as_vfinal_method(Method* f2) { assert(_f2 == 0 || _f2 == (intptr_t) f2, "illegal field change"); assert(is_vfinal(), "flags must be set"); _f2 = (intptr_t) f2; } twisti@3969: int make_flags(TosState state, int option_bits, int field_index_or_method_params); duke@435: void set_flags(intx flags) { _flags = flags; } twisti@3969: bool init_flags_atomic(intx flags); twisti@3969: void set_field_flags(TosState field_type, int option_bits, int field_index) { twisti@3969: assert((field_index & field_index_mask) == field_index, "field_index in range"); twisti@3969: set_flags(make_flags(field_type, option_bits | (1 << is_field_entry_shift), field_index)); twisti@3969: } twisti@3969: void set_method_flags(TosState return_type, int option_bits, int method_params) { twisti@3969: assert((method_params & parameter_size_mask) == method_params, "method_params in range"); twisti@3969: set_flags(make_flags(return_type, option_bits, method_params)); twisti@3969: } twisti@3969: bool init_method_flags_atomic(TosState return_type, int option_bits, int method_params) { twisti@3969: assert((method_params & parameter_size_mask) == method_params, "method_params in range"); twisti@3969: return init_flags_atomic(make_flags(return_type, option_bits, method_params)); twisti@3969: } duke@435: duke@435: public: twisti@3969: // specific bit definitions for the flags field: twisti@3969: // (Note: the interpreter must use these definitions to access the CP cache.) twisti@3969: enum { twisti@3969: // high order bits are the TosState corresponding to field type or method return type twisti@3969: tos_state_bits = 4, twisti@3969: tos_state_mask = right_n_bits(tos_state_bits), twisti@3969: tos_state_shift = BitsPerInt - tos_state_bits, // see verify_tos_state_shift below twisti@3969: // misc. option bits; can be any bit position in [16..27] coleenp@4037: is_field_entry_shift = 26, // (F) is it a field or a method? twisti@4133: has_method_type_shift = 25, // (M) does the call site have a MethodType? twisti@4133: has_appendix_shift = 24, // (A) does the call site have an appendix argument? twisti@4133: is_forced_virtual_shift = 23, // (I) is the interface reference forced to virtual mode? twisti@4133: is_final_shift = 22, // (f) is the field or method final? twisti@4133: is_volatile_shift = 21, // (v) is the field volatile? twisti@4133: is_vfinal_shift = 20, // (vf) did the call resolve to a final method? twisti@3969: // low order bits give field index (for FieldInfo) or method parameter size: twisti@3969: field_index_bits = 16, twisti@3969: field_index_mask = right_n_bits(field_index_bits), twisti@3969: parameter_size_bits = 8, // subset of field_index_mask, range is 0..255 twisti@3969: parameter_size_mask = right_n_bits(parameter_size_bits), twisti@3969: option_bits_mask = ~(((-1) << tos_state_shift) | (field_index_mask | parameter_size_mask)) duke@435: }; duke@435: twisti@3969: // specific bit definitions for the indices field: twisti@3969: enum { coleenp@4037: cp_index_bits = 2*BitsPerByte, coleenp@4037: cp_index_mask = right_n_bits(cp_index_bits), coleenp@4037: bytecode_1_shift = cp_index_bits, twisti@3969: bytecode_1_mask = right_n_bits(BitsPerByte), // == (u1)0xFF coleenp@4037: bytecode_2_shift = cp_index_bits + BitsPerByte, coleenp@4037: bytecode_2_mask = right_n_bits(BitsPerByte) // == (u1)0xFF twisti@3969: }; duke@435: duke@435: duke@435: // Initialization jrose@1494: void initialize_entry(int original_index); // initialize primary entry coleenp@4037: void initialize_resolved_reference_index(int ref_index) { coleenp@4037: assert(_f2 == 0, "set once"); // note: ref_index might be zero also coleenp@4037: _f2 = ref_index; coleenp@4037: } duke@435: duke@435: void set_field( // sets entry to resolved field state duke@435: Bytecodes::Code get_code, // the bytecode used for reading the field duke@435: Bytecodes::Code put_code, // the bytecode used for writing the field duke@435: KlassHandle field_holder, // the object/klass holding the field duke@435: int orig_field_index, // the original field index in the field holder duke@435: int field_offset, // the field offset in words in the field holder duke@435: TosState field_type, // the (machine) field type duke@435: bool is_final, // the field is final coleenp@4037: bool is_volatile, // the field is volatile coleenp@4037: Klass* root_klass // needed by the GC to dirty the klass duke@435: ); duke@435: duke@435: void set_method( // sets entry to resolved method entry duke@435: Bytecodes::Code invoke_code, // the bytecode used for invoking the method duke@435: methodHandle method, // the method/prototype if any (NULL, otherwise) duke@435: int vtable_index // the vtable index if any, else negative duke@435: ); duke@435: duke@435: void set_interface_call( duke@435: methodHandle method, // Resolved method duke@435: int index // Method index into interface duke@435: ); duke@435: twisti@3969: void set_method_handle( twisti@4049: constantPoolHandle cpool, // holding constant pool (required for locking) twisti@4253: const CallInfo &call_info // Call link information jrose@1161: ); jrose@1161: twisti@3969: void set_dynamic_call( twisti@4049: constantPoolHandle cpool, // holding constant pool (required for locking) twisti@4253: const CallInfo &call_info // Call link information twisti@3969: ); jrose@2982: twisti@3969: // Common code for invokedynamic and MH invocations. jrose@2015: twisti@3969: // The "appendix" is an optional call-site-specific parameter which is twisti@3969: // pushed by the JVM at the end of the argument list. This argument may twisti@3969: // be a MethodType for the MH.invokes and a CallSite for an invokedynamic twisti@3969: // instruction. However, its exact type and use depends on the Java upcall, twisti@3969: // which simply returns a compiled LambdaForm along with any reference twisti@3969: // that LambdaForm needs to complete the call. If the upcall returns a twisti@3969: // null appendix, the argument is not passed at all. twisti@3969: // twisti@3969: // The appendix is *not* represented in the signature of the symbolic twisti@3969: // reference for the call site, but (if present) it *is* represented in coleenp@4037: // the Method* bound to the site. This means that static and dynamic twisti@3969: // resolution logic needs to make slightly different assessments about the twisti@3969: // number and types of arguments. twisti@3969: void set_method_handle_common( twisti@4049: constantPoolHandle cpool, // holding constant pool (required for locking) twisti@3969: Bytecodes::Code invoke_code, // _invokehandle or _invokedynamic twisti@4253: const CallInfo &call_info // Call link information twisti@3969: ); twisti@3969: twisti@4133: // invokedynamic and invokehandle call sites have two entries in the twisti@4133: // resolved references array: twisti@4133: // appendix (at index+0) twisti@4133: // MethodType (at index+1) twisti@4133: enum { twisti@4133: _indy_resolved_references_appendix_offset = 0, twisti@4133: _indy_resolved_references_method_type_offset = 1, twisti@4133: _indy_resolved_references_entries twisti@4133: }; twisti@4133: twisti@4133: Method* method_if_resolved(constantPoolHandle cpool); twisti@4133: oop appendix_if_resolved(constantPoolHandle cpool); twisti@4133: oop method_type_if_resolved(constantPoolHandle cpool); twisti@3969: twisti@3969: void set_parameter_size(int value); duke@435: duke@435: // Which bytecode number (1 or 2) in the index field is valid for this bytecode? duke@435: // Returns -1 if neither is valid. duke@435: static int bytecode_number(Bytecodes::Code code) { duke@435: switch (code) { duke@435: case Bytecodes::_getstatic : // fall through duke@435: case Bytecodes::_getfield : // fall through duke@435: case Bytecodes::_invokespecial : // fall through duke@435: case Bytecodes::_invokestatic : // fall through twisti@4133: case Bytecodes::_invokehandle : // fall through twisti@4133: case Bytecodes::_invokedynamic : // fall through duke@435: case Bytecodes::_invokeinterface : return 1; duke@435: case Bytecodes::_putstatic : // fall through duke@435: case Bytecodes::_putfield : // fall through duke@435: case Bytecodes::_invokevirtual : return 2; duke@435: default : break; duke@435: } duke@435: return -1; duke@435: } duke@435: duke@435: // Has this bytecode been resolved? Only valid for invokes and get/put field/static. duke@435: bool is_resolved(Bytecodes::Code code) const { duke@435: switch (bytecode_number(code)) { duke@435: case 1: return (bytecode_1() == code); duke@435: case 2: return (bytecode_2() == code); duke@435: } duke@435: return false; // default: not resolved duke@435: } duke@435: duke@435: // Accessors coleenp@4037: int indices() const { return _indices; } coleenp@4037: int constant_pool_index() const { return (indices() & cp_index_mask); } coleenp@4037: Bytecodes::Code bytecode_1() const { return Bytecodes::cast((indices() >> bytecode_1_shift) & bytecode_1_mask); } coleenp@4037: Bytecodes::Code bytecode_2() const { return Bytecodes::cast((indices() >> bytecode_2_shift) & bytecode_2_mask); } coleenp@4037: Method* f1_as_method() const { Metadata* f1 = (Metadata*)_f1; assert(f1 == NULL || f1->is_method(), ""); return (Method*)f1; } coleenp@4037: Klass* f1_as_klass() const { Metadata* f1 = (Metadata*)_f1; assert(f1 == NULL || f1->is_klass(), ""); return (Klass*)f1; } coleenp@4037: bool is_f1_null() const { Metadata* f1 = (Metadata*)_f1; return f1 == NULL; } // classifies a CPC entry as unbound twisti@3969: int f2_as_index() const { assert(!is_vfinal(), ""); return (int) _f2; } coleenp@4037: Method* f2_as_vfinal_method() const { assert(is_vfinal(), ""); return (Method*)_f2; } twisti@3969: int field_index() const { assert(is_field_entry(), ""); return (_flags & field_index_mask); } twisti@3969: int parameter_size() const { assert(is_method_entry(), ""); return (_flags & parameter_size_mask); } twisti@3969: bool is_volatile() const { return (_flags & (1 << is_volatile_shift)) != 0; } twisti@3969: bool is_final() const { return (_flags & (1 << is_final_shift)) != 0; } twisti@3969: bool is_forced_virtual() const { return (_flags & (1 << is_forced_virtual_shift)) != 0; } twisti@3969: bool is_vfinal() const { return (_flags & (1 << is_vfinal_shift)) != 0; } coleenp@4037: bool has_appendix() const { return (_flags & (1 << has_appendix_shift)) != 0; } twisti@4133: bool has_method_type() const { return (_flags & (1 << has_method_type_shift)) != 0; } twisti@3969: bool is_method_entry() const { return (_flags & (1 << is_field_entry_shift)) == 0; } twisti@3969: bool is_field_entry() const { return (_flags & (1 << is_field_entry_shift)) != 0; } twisti@3969: bool is_byte() const { return flag_state() == btos; } twisti@3969: bool is_char() const { return flag_state() == ctos; } twisti@3969: bool is_short() const { return flag_state() == stos; } twisti@3969: bool is_int() const { return flag_state() == itos; } twisti@3969: bool is_long() const { return flag_state() == ltos; } twisti@3969: bool is_float() const { return flag_state() == ftos; } twisti@3969: bool is_double() const { return flag_state() == dtos; } twisti@3969: bool is_object() const { return flag_state() == atos; } twisti@3969: TosState flag_state() const { assert((uint)number_of_states <= (uint)tos_state_mask+1, ""); twisti@3969: return (TosState)((_flags >> tos_state_shift) & tos_state_mask); } duke@435: duke@435: // Code generation support duke@435: static WordSize size() { return in_WordSize(sizeof(ConstantPoolCacheEntry) / HeapWordSize); } jrose@1494: static ByteSize size_in_bytes() { return in_ByteSize(sizeof(ConstantPoolCacheEntry)); } duke@435: static ByteSize indices_offset() { return byte_offset_of(ConstantPoolCacheEntry, _indices); } duke@435: static ByteSize f1_offset() { return byte_offset_of(ConstantPoolCacheEntry, _f1); } duke@435: static ByteSize f2_offset() { return byte_offset_of(ConstantPoolCacheEntry, _f2); } duke@435: static ByteSize flags_offset() { return byte_offset_of(ConstantPoolCacheEntry, _flags); } duke@435: duke@435: // RedefineClasses() API support: duke@435: // If this constantPoolCacheEntry refers to old_method then update it duke@435: // to refer to new_method. duke@435: // trace_name_printed is set to true if the current call has duke@435: // printed the klass name so that other routines in the adjust_* duke@435: // group don't print the klass name. coleenp@4037: bool adjust_method_entry(Method* old_method, Method* new_method, duke@435: bool * trace_name_printed); coleenp@4037: NOT_PRODUCT(bool check_no_old_entries();) coleenp@4037: bool is_interesting_method_entry(Klass* k); duke@435: duke@435: // Debugging & Printing duke@435: void print (outputStream* st, int index) const; duke@435: void verify(outputStream* st) const; duke@435: twisti@3969: static void verify_tos_state_shift() { twisti@3969: // When shifting flags as a 32-bit int, make sure we don't need an extra mask for tos_state: twisti@3969: assert((((u4)-1 >> tos_state_shift) & ~tos_state_mask) == 0, "no need for tos_state mask"); duke@435: } duke@435: }; duke@435: duke@435: duke@435: // A constant pool cache is a runtime data structure set aside to a constant pool. The cache duke@435: // holds interpreter runtime information for all field access and invoke bytecodes. The cache duke@435: // is created and initialized before a class is actively used (i.e., initialized), the indivi- duke@435: // dual cache entries are filled at resolution (i.e., "link") time (see also: rewriter.*). duke@435: coleenp@4037: class ConstantPoolCache: public MetaspaceObj { duke@435: friend class VMStructs; coleenp@4037: friend class MetadataFactory; duke@435: private: coleenp@548: int _length; coleenp@4037: ConstantPool* _constant_pool; // the corresponding constant pool duke@435: duke@435: // Sizing coleenp@548: debug_only(friend class ClassVerifier;) coleenp@4037: coleenp@4037: // Constructor coleenp@4037: ConstantPoolCache(int length) : _length(length), _constant_pool(NULL) { coleenp@4037: for (int i = 0; i < length; i++) { coleenp@4037: assert(entry_at(i)->is_f1_null(), "Failed to clear?"); coleenp@4037: } coleenp@4037: } coleenp@4037: jrose@2268: public: coleenp@4037: static ConstantPoolCache* allocate(ClassLoaderData* loader_data, int length, TRAPS); coleenp@4037: bool is_constantPoolCache() const { return true; } coleenp@4037: coleenp@548: int length() const { return _length; } jrose@2268: private: coleenp@548: void set_length(int length) { _length = length; } coleenp@548: coleenp@4037: static int header_size() { return sizeof(ConstantPoolCache) / HeapWordSize; } coleenp@4037: static int size(int length) { return align_object_size(header_size() + length * in_words(ConstantPoolCacheEntry::size())); } coleenp@4037: public: coleenp@4037: int size() const { return size(length()); } coleenp@4037: private: duke@435: duke@435: // Helpers coleenp@4037: ConstantPool** constant_pool_addr() { return &_constant_pool; } duke@435: ConstantPoolCacheEntry* base() const { return (ConstantPoolCacheEntry*)((address)this + in_bytes(base_offset())); } duke@435: duke@435: friend class constantPoolCacheKlass; jrose@1494: friend class ConstantPoolCacheEntry; duke@435: duke@435: public: duke@435: // Initialization coleenp@4037: void initialize(intArray& inverse_index_map, intArray& invokedynamic_references_map); jrose@1161: duke@435: // Accessors coleenp@4037: void set_constant_pool(ConstantPool* pool) { _constant_pool = pool; } coleenp@4037: ConstantPool* constant_pool() const { return _constant_pool; } jrose@1494: // Fetches the entry at the given index. jrose@1494: // In either case the index must not be encoded or byte-swapped in any way. jrose@1494: ConstantPoolCacheEntry* entry_at(int i) const { jrose@1494: assert(0 <= i && i < length(), "index out of bounds"); jrose@1494: return base() + i; jrose@1494: } duke@435: duke@435: // Code generation coleenp@4037: static ByteSize base_offset() { return in_ByteSize(sizeof(ConstantPoolCache)); } jrose@1494: static ByteSize entry_offset(int raw_index) { jrose@1494: int index = raw_index; jrose@1494: return (base_offset() + ConstantPoolCacheEntry::size_in_bytes() * index); jrose@1494: } duke@435: duke@435: // RedefineClasses() API support: duke@435: // If any entry of this constantPoolCache points to any of duke@435: // old_methods, replace it with the corresponding new_method. duke@435: // trace_name_printed is set to true if the current call has duke@435: // printed the klass name so that other routines in the adjust_* duke@435: // group don't print the klass name. coleenp@4037: void adjust_method_entries(Method** old_methods, Method** new_methods, duke@435: int methods_length, bool * trace_name_printed); coleenp@4037: NOT_PRODUCT(bool check_no_old_entries();) coleenp@4037: coleenp@4037: // Deallocate - no fields to deallocate coleenp@4037: DEBUG_ONLY(bool on_stack() { return false; }) coleenp@4037: void deallocate_contents(ClassLoaderData* data) {} coleenp@4037: bool is_klass() const { return false; } coleenp@4037: coleenp@4037: // Printing coleenp@4037: void print_on(outputStream* st) const; coleenp@4037: void print_value_on(outputStream* st) const; coleenp@4037: coleenp@4037: const char* internal_name() const { return "{constant pool cache}"; } coleenp@4037: coleenp@4037: // Verify coleenp@4037: void verify_on(outputStream* st); duke@435: }; stefank@2314: stefank@2314: #endif // SHARE_VM_OOPS_CPCACHEOOP_HPP