1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/src/share/vm/oops/method.hpp Sat Sep 01 13:25:18 2012 -0400
1.3 @@ -0,0 +1,976 @@
1.4 +/*
1.5 + * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved.
1.6 + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
1.7 + *
1.8 + * This code is free software; you can redistribute it and/or modify it
1.9 + * under the terms of the GNU General Public License version 2 only, as
1.10 + * published by the Free Software Foundation.
1.11 + *
1.12 + * This code is distributed in the hope that it will be useful, but WITHOUT
1.13 + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
1.14 + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
1.15 + * version 2 for more details (a copy is included in the LICENSE file that
1.16 + * accompanied this code).
1.17 + *
1.18 + * You should have received a copy of the GNU General Public License version
1.19 + * 2 along with this work; if not, write to the Free Software Foundation,
1.20 + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
1.21 + *
1.22 + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
1.23 + * or visit www.oracle.com if you need additional information or have any
1.24 + * questions.
1.25 + *
1.26 + */
1.27 +
1.28 +#ifndef SHARE_VM_OOPS_METHODOOP_HPP
1.29 +#define SHARE_VM_OOPS_METHODOOP_HPP
1.30 +
1.31 +#include "classfile/vmSymbols.hpp"
1.32 +#include "code/compressedStream.hpp"
1.33 +#include "compiler/oopMap.hpp"
1.34 +#include "interpreter/invocationCounter.hpp"
1.35 +#include "oops/annotations.hpp"
1.36 +#include "oops/constMethod.hpp"
1.37 +#include "oops/constantPool.hpp"
1.38 +#include "oops/instanceKlass.hpp"
1.39 +#include "oops/oop.hpp"
1.40 +#include "oops/typeArrayOop.hpp"
1.41 +#include "utilities/accessFlags.hpp"
1.42 +#include "utilities/growableArray.hpp"
1.43 +
1.44 +// A Method* represents a Java method.
1.45 +//
1.46 +// Memory layout (each line represents a word). Note that most applications load thousands of methods,
1.47 +// so keeping the size of this structure small has a big impact on footprint.
1.48 +//
1.49 +// We put all oops and method_size first for better gc cache locality.
1.50 +//
1.51 +// The actual bytecodes are inlined after the end of the Method struct.
1.52 +//
1.53 +// There are bits in the access_flags telling whether inlined tables are present.
1.54 +// Note that accessing the line number and local variable tables is not performance critical at all.
1.55 +// Accessing the checked exceptions table is used by reflection, so we put that last to make access
1.56 +// to it fast.
1.57 +//
1.58 +// The line number table is compressed and inlined following the byte codes. It is found as the first
1.59 +// byte following the byte codes. The checked exceptions table and the local variable table are inlined
1.60 +// after the line number table, and indexed from the end of the method. We do not compress the checked
1.61 +// exceptions table since the average length is less than 2, and do not bother to compress the local
1.62 +// variable table either since it is mostly absent.
1.63 +//
1.64 +// Note that native_function and signature_handler has to be at fixed offsets (required by the interpreter)
1.65 +//
1.66 +// |------------------------------------------------------|
1.67 +// | header |
1.68 +// | klass |
1.69 +// |------------------------------------------------------|
1.70 +// | ConstMethod* (oop) |
1.71 +// |------------------------------------------------------|
1.72 +// | methodData (oop) |
1.73 +// | interp_invocation_count |
1.74 +// |------------------------------------------------------|
1.75 +// | access_flags |
1.76 +// | vtable_index |
1.77 +// |------------------------------------------------------|
1.78 +// | result_index (C++ interpreter only) |
1.79 +// |------------------------------------------------------|
1.80 +// | method_size | max_stack |
1.81 +// | max_locals | size_of_parameters |
1.82 +// |------------------------------------------------------|
1.83 +// |intrinsic_id| flags | throwout_count |
1.84 +// |------------------------------------------------------|
1.85 +// | num_breakpoints | (unused) |
1.86 +// |------------------------------------------------------|
1.87 +// | invocation_counter |
1.88 +// | backedge_counter |
1.89 +// |------------------------------------------------------|
1.90 +// | prev_time (tiered only, 64 bit wide) |
1.91 +// | |
1.92 +// |------------------------------------------------------|
1.93 +// | rate (tiered) |
1.94 +// |------------------------------------------------------|
1.95 +// | code (pointer) |
1.96 +// | i2i (pointer) |
1.97 +// | adapter (pointer) |
1.98 +// | from_compiled_entry (pointer) |
1.99 +// | from_interpreted_entry (pointer) |
1.100 +// |------------------------------------------------------|
1.101 +// | native_function (present only if native) |
1.102 +// | signature_handler (present only if native) |
1.103 +// |------------------------------------------------------|
1.104 +
1.105 +
1.106 +class CheckedExceptionElement;
1.107 +class LocalVariableTableElement;
1.108 +class AdapterHandlerEntry;
1.109 +class MethodData;
1.110 +
1.111 +class Method : public Metadata {
1.112 + friend class VMStructs;
1.113 + private:
1.114 + ConstMethod* _constMethod; // Method read-only data.
1.115 + MethodData* _method_data;
1.116 + int _interpreter_invocation_count; // Count of times invoked (reused as prev_event_count in tiered)
1.117 + AccessFlags _access_flags; // Access flags
1.118 + int _vtable_index; // vtable index of this method (see VtableIndexFlag)
1.119 + // note: can have vtables with >2**16 elements (because of inheritance)
1.120 +#ifdef CC_INTERP
1.121 + int _result_index; // C++ interpreter needs for converting results to/from stack
1.122 +#endif
1.123 + u2 _method_size; // size of this object
1.124 + u2 _max_stack; // Maximum number of entries on the expression stack
1.125 + u2 _max_locals; // Number of local variables used by this method
1.126 + u2 _size_of_parameters; // size of the parameter block (receiver + arguments) in words
1.127 + u1 _intrinsic_id; // vmSymbols::intrinsic_id (0 == _none)
1.128 + u1 _jfr_towrite : 1, // Flags
1.129 + _force_inline : 1,
1.130 + _hidden : 1,
1.131 + _dont_inline : 1,
1.132 + : 4;
1.133 + u2 _interpreter_throwout_count; // Count of times method was exited via exception while interpreting
1.134 + u2 _number_of_breakpoints; // fullspeed debugging support
1.135 + InvocationCounter _invocation_counter; // Incremented before each activation of the method - used to trigger frequency-based optimizations
1.136 + InvocationCounter _backedge_counter; // Incremented before each backedge taken - used to trigger frequencey-based optimizations
1.137 +
1.138 +#ifdef TIERED
1.139 + jlong _prev_time; // Previous time the rate was acquired
1.140 + float _rate; // Events (invocation and backedge counter increments) per millisecond
1.141 +#endif
1.142 +
1.143 +#ifndef PRODUCT
1.144 + int _compiled_invocation_count; // Number of nmethod invocations so far (for perf. debugging)
1.145 +#endif
1.146 + // Entry point for calling both from and to the interpreter.
1.147 + address _i2i_entry; // All-args-on-stack calling convention
1.148 + // Adapter blob (i2c/c2i) for this Method*. Set once when method is linked.
1.149 + AdapterHandlerEntry* _adapter;
1.150 + // Entry point for calling from compiled code, to compiled code if it exists
1.151 + // or else the interpreter.
1.152 + volatile address _from_compiled_entry; // Cache of: _code ? _code->entry_point() : _adapter->c2i_entry()
1.153 + // The entry point for calling both from and to compiled code is
1.154 + // "_code->entry_point()". Because of tiered compilation and de-opt, this
1.155 + // field can come and go. It can transition from NULL to not-null at any
1.156 + // time (whenever a compile completes). It can transition from not-null to
1.157 + // NULL only at safepoints (because of a de-opt).
1.158 + nmethod* volatile _code; // Points to the corresponding piece of native code
1.159 + volatile address _from_interpreted_entry; // Cache of _code ? _adapter->i2c_entry() : _i2i_entry
1.160 +
1.161 + // Constructor
1.162 + Method(ConstMethod* xconst, AccessFlags access_flags, int size);
1.163 + public:
1.164 + static Method* allocate(ClassLoaderData* loader_data,
1.165 + int byte_code_size,
1.166 + AccessFlags access_flags,
1.167 + int compressed_line_number_size,
1.168 + int localvariable_table_length,
1.169 + int exception_table_length,
1.170 + int checked_exceptions_length,
1.171 + TRAPS);
1.172 +
1.173 + Method() { assert(DumpSharedSpaces || UseSharedSpaces, "only for CDS"); }
1.174 + bool is_method() const volatile { return true; }
1.175 +
1.176 + // accessors for instance variables
1.177 + ConstMethod* constMethod() const { return _constMethod; }
1.178 + void set_constMethod(ConstMethod* xconst) { _constMethod = xconst; }
1.179 +
1.180 +
1.181 + static address make_adapters(methodHandle mh, TRAPS);
1.182 + volatile address from_compiled_entry() const { return (address)OrderAccess::load_ptr_acquire(&_from_compiled_entry); }
1.183 + volatile address from_interpreted_entry() const{ return (address)OrderAccess::load_ptr_acquire(&_from_interpreted_entry); }
1.184 +
1.185 + // access flag
1.186 + AccessFlags access_flags() const { return _access_flags; }
1.187 + void set_access_flags(AccessFlags flags) { _access_flags = flags; }
1.188 +
1.189 + // name
1.190 + Symbol* name() const { return constants()->symbol_at(name_index()); }
1.191 + int name_index() const { return constMethod()->name_index(); }
1.192 + void set_name_index(int index) { constMethod()->set_name_index(index); }
1.193 +
1.194 + // signature
1.195 + Symbol* signature() const { return constants()->symbol_at(signature_index()); }
1.196 + int signature_index() const { return constMethod()->signature_index(); }
1.197 + void set_signature_index(int index) { constMethod()->set_signature_index(index); }
1.198 +
1.199 + // generics support
1.200 + Symbol* generic_signature() const { int idx = generic_signature_index(); return ((idx != 0) ? constants()->symbol_at(idx) : (Symbol*)NULL); }
1.201 + int generic_signature_index() const { return constMethod()->generic_signature_index(); }
1.202 + void set_generic_signature_index(int index) { constMethod()->set_generic_signature_index(index); }
1.203 +
1.204 + // annotations support
1.205 + AnnotationArray* annotations() const {
1.206 + InstanceKlass* ik = InstanceKlass::cast(method_holder());
1.207 + if (ik->annotations() == NULL) {
1.208 + return NULL;
1.209 + }
1.210 + return ik->annotations()->get_method_annotations_of(method_idnum());
1.211 + }
1.212 + AnnotationArray* parameter_annotations() const {
1.213 + InstanceKlass* ik = InstanceKlass::cast(method_holder());
1.214 + if (ik->annotations() == NULL) {
1.215 + return NULL;
1.216 + }
1.217 + return ik->annotations()->get_method_parameter_annotations_of(method_idnum());
1.218 + }
1.219 + AnnotationArray* annotation_default() const {
1.220 + InstanceKlass* ik = InstanceKlass::cast(method_holder());
1.221 + if (ik->annotations() == NULL) {
1.222 + return NULL;
1.223 + }
1.224 + return ik->annotations()->get_method_default_annotations_of(method_idnum());
1.225 + }
1.226 +
1.227 +#ifdef CC_INTERP
1.228 + void set_result_index(BasicType type);
1.229 + int result_index() { return _result_index; }
1.230 +#endif
1.231 +
1.232 + // Helper routine: get klass name + "." + method name + signature as
1.233 + // C string, for the purpose of providing more useful NoSuchMethodErrors
1.234 + // and fatal error handling. The string is allocated in resource
1.235 + // area if a buffer is not provided by the caller.
1.236 + char* name_and_sig_as_C_string() const;
1.237 + char* name_and_sig_as_C_string(char* buf, int size) const;
1.238 +
1.239 + // Static routine in the situations we don't have a Method*
1.240 + static char* name_and_sig_as_C_string(Klass* klass, Symbol* method_name, Symbol* signature);
1.241 + static char* name_and_sig_as_C_string(Klass* klass, Symbol* method_name, Symbol* signature, char* buf, int size);
1.242 +
1.243 + Bytecodes::Code java_code_at(int bci) const {
1.244 + return Bytecodes::java_code_at(this, bcp_from(bci));
1.245 + }
1.246 + Bytecodes::Code code_at(int bci) const {
1.247 + return Bytecodes::code_at(this, bcp_from(bci));
1.248 + }
1.249 +
1.250 + // JVMTI breakpoints
1.251 + Bytecodes::Code orig_bytecode_at(int bci) const;
1.252 + void set_orig_bytecode_at(int bci, Bytecodes::Code code);
1.253 + void set_breakpoint(int bci);
1.254 + void clear_breakpoint(int bci);
1.255 + void clear_all_breakpoints();
1.256 + // Tracking number of breakpoints, for fullspeed debugging.
1.257 + // Only mutated by VM thread.
1.258 + u2 number_of_breakpoints() const { return _number_of_breakpoints; }
1.259 + void incr_number_of_breakpoints() { ++_number_of_breakpoints; }
1.260 + void decr_number_of_breakpoints() { --_number_of_breakpoints; }
1.261 + // Initialization only
1.262 + void clear_number_of_breakpoints() { _number_of_breakpoints = 0; }
1.263 +
1.264 + // index into InstanceKlass methods() array
1.265 + // note: also used by jfr
1.266 + u2 method_idnum() const { return constMethod()->method_idnum(); }
1.267 + void set_method_idnum(u2 idnum) { constMethod()->set_method_idnum(idnum); }
1.268 +
1.269 + // code size
1.270 + int code_size() const { return constMethod()->code_size(); }
1.271 +
1.272 + // method size
1.273 + int method_size() const { return _method_size; }
1.274 + void set_method_size(int size) {
1.275 + assert(0 <= size && size < (1 << 16), "invalid method size");
1.276 + _method_size = size;
1.277 + }
1.278 +
1.279 + // constant pool for Klass* holding this method
1.280 + ConstantPool* constants() const { return constMethod()->constants(); }
1.281 + void set_constants(ConstantPool* c) { constMethod()->set_constants(c); }
1.282 +
1.283 + // max stack
1.284 + // return original max stack size for method verification
1.285 + int verifier_max_stack() const { return _max_stack; }
1.286 + int max_stack() const { return _max_stack + extra_stack_entries(); }
1.287 + void set_max_stack(int size) { _max_stack = size; }
1.288 +
1.289 + // max locals
1.290 + int max_locals() const { return _max_locals; }
1.291 + void set_max_locals(int size) { _max_locals = size; }
1.292 +
1.293 + int highest_comp_level() const;
1.294 + void set_highest_comp_level(int level);
1.295 + int highest_osr_comp_level() const;
1.296 + void set_highest_osr_comp_level(int level);
1.297 +
1.298 + // Count of times method was exited via exception while interpreting
1.299 + void interpreter_throwout_increment() {
1.300 + if (_interpreter_throwout_count < 65534) {
1.301 + _interpreter_throwout_count++;
1.302 + }
1.303 + }
1.304 +
1.305 + int interpreter_throwout_count() const { return _interpreter_throwout_count; }
1.306 + void set_interpreter_throwout_count(int count) { _interpreter_throwout_count = count; }
1.307 +
1.308 + // size of parameters
1.309 + int size_of_parameters() const { return _size_of_parameters; }
1.310 +
1.311 + bool has_stackmap_table() const {
1.312 + return constMethod()->has_stackmap_table();
1.313 + }
1.314 +
1.315 + Array<u1>* stackmap_data() const {
1.316 + return constMethod()->stackmap_data();
1.317 + }
1.318 +
1.319 + void set_stackmap_data(Array<u1>* sd) {
1.320 + constMethod()->set_stackmap_data(sd);
1.321 + }
1.322 +
1.323 + // exception handler table
1.324 + bool has_exception_handler() const
1.325 + { return constMethod()->has_exception_handler(); }
1.326 + int exception_table_length() const
1.327 + { return constMethod()->exception_table_length(); }
1.328 + ExceptionTableElement* exception_table_start() const
1.329 + { return constMethod()->exception_table_start(); }
1.330 +
1.331 + // Finds the first entry point bci of an exception handler for an
1.332 + // exception of klass ex_klass thrown at throw_bci. A value of NULL
1.333 + // for ex_klass indicates that the exception klass is not known; in
1.334 + // this case it matches any constraint class. Returns -1 if the
1.335 + // exception cannot be handled in this method. The handler
1.336 + // constraint classes are loaded if necessary. Note that this may
1.337 + // throw an exception if loading of the constraint classes causes
1.338 + // an IllegalAccessError (bugid 4307310) or an OutOfMemoryError.
1.339 + // If an exception is thrown, returns the bci of the
1.340 + // exception handler which caused the exception to be thrown, which
1.341 + // is needed for proper retries. See, for example,
1.342 + // InterpreterRuntime::exception_handler_for_exception.
1.343 + int fast_exception_handler_bci_for(KlassHandle ex_klass, int throw_bci, TRAPS);
1.344 +
1.345 + // method data access
1.346 + MethodData* method_data() const {
1.347 + return _method_data;
1.348 + }
1.349 + void set_method_data(MethodData* data) {
1.350 + _method_data = data;
1.351 + }
1.352 +
1.353 + // invocation counter
1.354 + InvocationCounter* invocation_counter() { return &_invocation_counter; }
1.355 + InvocationCounter* backedge_counter() { return &_backedge_counter; }
1.356 +
1.357 +#ifdef TIERED
1.358 + // We are reusing interpreter_invocation_count as a holder for the previous event count!
1.359 + // We can do that since interpreter_invocation_count is not used in tiered.
1.360 + int prev_event_count() const { return _interpreter_invocation_count; }
1.361 + void set_prev_event_count(int count) { _interpreter_invocation_count = count; }
1.362 + jlong prev_time() const { return _prev_time; }
1.363 + void set_prev_time(jlong time) { _prev_time = time; }
1.364 + float rate() const { return _rate; }
1.365 + void set_rate(float rate) { _rate = rate; }
1.366 +#endif
1.367 +
1.368 + int invocation_count();
1.369 + int backedge_count();
1.370 +
1.371 + bool was_executed_more_than(int n);
1.372 + bool was_never_executed() { return !was_executed_more_than(0); }
1.373 +
1.374 + static void build_interpreter_method_data(methodHandle method, TRAPS);
1.375 +
1.376 + int interpreter_invocation_count() {
1.377 + if (TieredCompilation) return invocation_count();
1.378 + else return _interpreter_invocation_count;
1.379 + }
1.380 + void set_interpreter_invocation_count(int count) { _interpreter_invocation_count = count; }
1.381 + int increment_interpreter_invocation_count() {
1.382 + if (TieredCompilation) ShouldNotReachHere();
1.383 + return ++_interpreter_invocation_count;
1.384 + }
1.385 +
1.386 +#ifndef PRODUCT
1.387 + int compiled_invocation_count() const { return _compiled_invocation_count; }
1.388 + void set_compiled_invocation_count(int count) { _compiled_invocation_count = count; }
1.389 +#endif // not PRODUCT
1.390 +
1.391 + // Clear (non-shared space) pointers which could not be relevant
1.392 + // if this (shared) method were mapped into another JVM.
1.393 + void remove_unshareable_info();
1.394 +
1.395 + // nmethod/verified compiler entry
1.396 + address verified_code_entry();
1.397 + bool check_code() const; // Not inline to avoid circular ref
1.398 + nmethod* volatile code() const { assert( check_code(), "" ); return (nmethod *)OrderAccess::load_ptr_acquire(&_code); }
1.399 + void clear_code(); // Clear out any compiled code
1.400 + static void set_code(methodHandle mh, nmethod* code);
1.401 + void set_adapter_entry(AdapterHandlerEntry* adapter) { _adapter = adapter; }
1.402 + address get_i2c_entry();
1.403 + address get_c2i_entry();
1.404 + address get_c2i_unverified_entry();
1.405 + AdapterHandlerEntry* adapter() { return _adapter; }
1.406 + // setup entry points
1.407 + void link_method(methodHandle method, TRAPS);
1.408 + // clear entry points. Used by sharing code
1.409 + void unlink_method();
1.410 +
1.411 + // vtable index
1.412 + enum VtableIndexFlag {
1.413 + // Valid vtable indexes are non-negative (>= 0).
1.414 + // These few negative values are used as sentinels.
1.415 + highest_unused_vtable_index_value = -5,
1.416 + invalid_vtable_index = -4, // distinct from any valid vtable index
1.417 + garbage_vtable_index = -3, // not yet linked; no vtable layout yet
1.418 + nonvirtual_vtable_index = -2 // there is no need for vtable dispatch
1.419 + // 6330203 Note: Do not use -1, which was overloaded with many meanings.
1.420 + };
1.421 + DEBUG_ONLY(bool valid_vtable_index() const { return _vtable_index >= nonvirtual_vtable_index; })
1.422 + int vtable_index() const { assert(valid_vtable_index(), "");
1.423 + return _vtable_index; }
1.424 + void set_vtable_index(int index) { _vtable_index = index; }
1.425 +
1.426 + // interpreter entry
1.427 + address interpreter_entry() const { return _i2i_entry; }
1.428 + // Only used when first initialize so we can set _i2i_entry and _from_interpreted_entry
1.429 + void set_interpreter_entry(address entry) { _i2i_entry = entry; _from_interpreted_entry = entry; }
1.430 + int interpreter_kind(void) {
1.431 + return constMethod()->interpreter_kind();
1.432 + }
1.433 + void set_interpreter_kind();
1.434 + void set_interpreter_kind(int kind) {
1.435 + constMethod()->set_interpreter_kind(kind);
1.436 + }
1.437 +
1.438 + // native function (used for native methods only)
1.439 + enum {
1.440 + native_bind_event_is_interesting = true
1.441 + };
1.442 + address native_function() const { return *(native_function_addr()); }
1.443 + address critical_native_function();
1.444 +
1.445 + // Must specify a real function (not NULL).
1.446 + // Use clear_native_function() to unregister.
1.447 + void set_native_function(address function, bool post_event_flag);
1.448 + bool has_native_function() const;
1.449 + void clear_native_function();
1.450 +
1.451 + // signature handler (used for native methods only)
1.452 + address signature_handler() const { return *(signature_handler_addr()); }
1.453 + void set_signature_handler(address handler);
1.454 +
1.455 + // Interpreter oopmap support
1.456 + void mask_for(int bci, InterpreterOopMap* mask);
1.457 +
1.458 +#ifndef PRODUCT
1.459 + // operations on invocation counter
1.460 + void print_invocation_count();
1.461 +#endif
1.462 +
1.463 + // byte codes
1.464 + void set_code(address code) { return constMethod()->set_code(code); }
1.465 + address code_base() const { return constMethod()->code_base(); }
1.466 + bool contains(address bcp) const { return constMethod()->contains(bcp); }
1.467 +
1.468 + // prints byte codes
1.469 + void print_codes() const { print_codes_on(tty); }
1.470 + void print_codes_on(outputStream* st) const PRODUCT_RETURN;
1.471 + void print_codes_on(int from, int to, outputStream* st) const PRODUCT_RETURN;
1.472 +
1.473 + // checked exceptions
1.474 + int checked_exceptions_length() const
1.475 + { return constMethod()->checked_exceptions_length(); }
1.476 + CheckedExceptionElement* checked_exceptions_start() const
1.477 + { return constMethod()->checked_exceptions_start(); }
1.478 +
1.479 + // localvariable table
1.480 + bool has_localvariable_table() const
1.481 + { return constMethod()->has_localvariable_table(); }
1.482 + int localvariable_table_length() const
1.483 + { return constMethod()->localvariable_table_length(); }
1.484 + LocalVariableTableElement* localvariable_table_start() const
1.485 + { return constMethod()->localvariable_table_start(); }
1.486 +
1.487 + bool has_linenumber_table() const
1.488 + { return constMethod()->has_linenumber_table(); }
1.489 + u_char* compressed_linenumber_table() const
1.490 + { return constMethod()->compressed_linenumber_table(); }
1.491 +
1.492 + // method holder (the Klass* holding this method)
1.493 + Klass* method_holder() const { return constants()->pool_holder(); }
1.494 +
1.495 + void compute_size_of_parameters(Thread *thread); // word size of parameters (receiver if any + arguments)
1.496 + Symbol* klass_name() const; // returns the name of the method holder
1.497 + BasicType result_type() const; // type of the method result
1.498 + int result_type_index() const; // type index of the method result
1.499 + bool is_returning_oop() const { BasicType r = result_type(); return (r == T_OBJECT || r == T_ARRAY); }
1.500 + bool is_returning_fp() const { BasicType r = result_type(); return (r == T_FLOAT || r == T_DOUBLE); }
1.501 +
1.502 + // Checked exceptions thrown by this method (resolved to mirrors)
1.503 + objArrayHandle resolved_checked_exceptions(TRAPS) { return resolved_checked_exceptions_impl(this, THREAD); }
1.504 +
1.505 + // Access flags
1.506 + bool is_public() const { return access_flags().is_public(); }
1.507 + bool is_private() const { return access_flags().is_private(); }
1.508 + bool is_protected() const { return access_flags().is_protected(); }
1.509 + bool is_package_private() const { return !is_public() && !is_private() && !is_protected(); }
1.510 + bool is_static() const { return access_flags().is_static(); }
1.511 + bool is_final() const { return access_flags().is_final(); }
1.512 + bool is_synchronized() const { return access_flags().is_synchronized();}
1.513 + bool is_native() const { return access_flags().is_native(); }
1.514 + bool is_abstract() const { return access_flags().is_abstract(); }
1.515 + bool is_strict() const { return access_flags().is_strict(); }
1.516 + bool is_synthetic() const { return access_flags().is_synthetic(); }
1.517 +
1.518 + // returns true if contains only return operation
1.519 + bool is_empty_method() const;
1.520 +
1.521 + // returns true if this is a vanilla constructor
1.522 + bool is_vanilla_constructor() const;
1.523 +
1.524 + // checks method and its method holder
1.525 + bool is_final_method() const;
1.526 + bool is_strict_method() const;
1.527 +
1.528 + // true if method needs no dynamic dispatch (final and/or no vtable entry)
1.529 + bool can_be_statically_bound() const;
1.530 +
1.531 + // returns true if the method has any backward branches.
1.532 + bool has_loops() {
1.533 + return access_flags().loops_flag_init() ? access_flags().has_loops() : compute_has_loops_flag();
1.534 + };
1.535 +
1.536 + bool compute_has_loops_flag();
1.537 +
1.538 + bool has_jsrs() {
1.539 + return access_flags().has_jsrs();
1.540 + };
1.541 + void set_has_jsrs() {
1.542 + _access_flags.set_has_jsrs();
1.543 + }
1.544 +
1.545 + // returns true if the method has any monitors.
1.546 + bool has_monitors() const { return is_synchronized() || access_flags().has_monitor_bytecodes(); }
1.547 + bool has_monitor_bytecodes() const { return access_flags().has_monitor_bytecodes(); }
1.548 +
1.549 + void set_has_monitor_bytecodes() { _access_flags.set_has_monitor_bytecodes(); }
1.550 +
1.551 + // monitor matching. This returns a conservative estimate of whether the monitorenter/monitorexit bytecodes
1.552 + // propererly nest in the method. It might return false, even though they actually nest properly, since the info.
1.553 + // has not been computed yet.
1.554 + bool guaranteed_monitor_matching() const { return access_flags().is_monitor_matching(); }
1.555 + void set_guaranteed_monitor_matching() { _access_flags.set_monitor_matching(); }
1.556 +
1.557 + // returns true if the method is an accessor function (setter/getter).
1.558 + bool is_accessor() const;
1.559 +
1.560 + // returns true if the method is an initializer (<init> or <clinit>).
1.561 + bool is_initializer() const;
1.562 +
1.563 + // returns true if the method is static OR if the classfile version < 51
1.564 + bool has_valid_initializer_flags() const;
1.565 +
1.566 + // returns true if the method name is <clinit> and the method has
1.567 + // valid static initializer flags.
1.568 + bool is_static_initializer() const;
1.569 +
1.570 + // compiled code support
1.571 + // NOTE: code() is inherently racy as deopt can be clearing code
1.572 + // simultaneously. Use with caution.
1.573 + bool has_compiled_code() const { return code() != NULL; }
1.574 +
1.575 + // sizing
1.576 + static int header_size() { return sizeof(Method)/HeapWordSize; }
1.577 + static int size(bool is_native);
1.578 + int size() const { return method_size(); }
1.579 +
1.580 + // interpreter support
1.581 + static ByteSize const_offset() { return byte_offset_of(Method, _constMethod ); }
1.582 + static ByteSize access_flags_offset() { return byte_offset_of(Method, _access_flags ); }
1.583 +#ifdef CC_INTERP
1.584 + static ByteSize result_index_offset() { return byte_offset_of(Method, _result_index ); }
1.585 +#endif /* CC_INTERP */
1.586 + static ByteSize size_of_locals_offset() { return byte_offset_of(Method, _max_locals ); }
1.587 + static ByteSize size_of_parameters_offset() { return byte_offset_of(Method, _size_of_parameters); }
1.588 + static ByteSize from_compiled_offset() { return byte_offset_of(Method, _from_compiled_entry); }
1.589 + static ByteSize code_offset() { return byte_offset_of(Method, _code); }
1.590 + static ByteSize invocation_counter_offset() { return byte_offset_of(Method, _invocation_counter); }
1.591 + static ByteSize backedge_counter_offset() { return byte_offset_of(Method, _backedge_counter); }
1.592 + static ByteSize method_data_offset() {
1.593 + return byte_offset_of(Method, _method_data);
1.594 + }
1.595 + static ByteSize interpreter_invocation_counter_offset() { return byte_offset_of(Method, _interpreter_invocation_count); }
1.596 +#ifndef PRODUCT
1.597 + static ByteSize compiled_invocation_counter_offset() { return byte_offset_of(Method, _compiled_invocation_count); }
1.598 +#endif // not PRODUCT
1.599 + static ByteSize native_function_offset() { return in_ByteSize(sizeof(Method)); }
1.600 + static ByteSize from_interpreted_offset() { return byte_offset_of(Method, _from_interpreted_entry ); }
1.601 + static ByteSize interpreter_entry_offset() { return byte_offset_of(Method, _i2i_entry ); }
1.602 + static ByteSize signature_handler_offset() { return in_ByteSize(sizeof(Method) + wordSize); }
1.603 + static ByteSize max_stack_offset() { return byte_offset_of(Method, _max_stack ); }
1.604 +
1.605 + // for code generation
1.606 + static int method_data_offset_in_bytes() { return offset_of(Method, _method_data); }
1.607 + static int interpreter_invocation_counter_offset_in_bytes()
1.608 + { return offset_of(Method, _interpreter_invocation_count); }
1.609 + static int intrinsic_id_offset_in_bytes() { return offset_of(Method, _intrinsic_id); }
1.610 + static int intrinsic_id_size_in_bytes() { return sizeof(u1); }
1.611 +
1.612 + // Static methods that are used to implement member methods where an exposed this pointer
1.613 + // is needed due to possible GCs
1.614 + static objArrayHandle resolved_checked_exceptions_impl(Method* this_oop, TRAPS);
1.615 +
1.616 + // Returns the byte code index from the byte code pointer
1.617 + int bci_from(address bcp) const;
1.618 + address bcp_from(int bci) const;
1.619 + int validate_bci_from_bcx(intptr_t bcx) const;
1.620 +
1.621 + // Returns the line number for a bci if debugging information for the method is prowided,
1.622 + // -1 is returned otherwise.
1.623 + int line_number_from_bci(int bci) const;
1.624 +
1.625 + // Reflection support
1.626 + bool is_overridden_in(Klass* k) const;
1.627 +
1.628 + // JSR 292 support
1.629 + bool is_method_handle_intrinsic() const; // MethodHandles::is_signature_polymorphic_intrinsic(intrinsic_id)
1.630 + bool is_compiled_lambda_form() const; // intrinsic_id() == vmIntrinsics::_compiledLambdaForm
1.631 + bool has_member_arg() const; // intrinsic_id() == vmIntrinsics::_linkToSpecial, etc.
1.632 + static methodHandle make_method_handle_intrinsic(vmIntrinsics::ID iid, // _invokeBasic, _linkToVirtual
1.633 + Symbol* signature, //anything at all
1.634 + TRAPS);
1.635 + static Klass* check_non_bcp_klass(Klass* klass);
1.636 + // these operate only on invoke methods:
1.637 + // presize interpreter frames for extra interpreter stack entries, if needed
1.638 + // method handles want to be able to push a few extra values (e.g., a bound receiver), and
1.639 + // invokedynamic sometimes needs to push a bootstrap method, call site, and arglist,
1.640 + // all without checking for a stack overflow
1.641 + static int extra_stack_entries() { return EnableInvokeDynamic ? 2 : 0; }
1.642 + static int extra_stack_words(); // = extra_stack_entries() * Interpreter::stackElementSize()
1.643 +
1.644 + // RedefineClasses() support:
1.645 + bool is_old() const { return access_flags().is_old(); }
1.646 + void set_is_old() { _access_flags.set_is_old(); }
1.647 + bool is_obsolete() const { return access_flags().is_obsolete(); }
1.648 + void set_is_obsolete() { _access_flags.set_is_obsolete(); }
1.649 + bool on_stack() const { return access_flags().on_stack(); }
1.650 + void set_on_stack(const bool value);
1.651 +
1.652 + // see the definition in Method*.cpp for the gory details
1.653 + bool should_not_be_cached() const;
1.654 +
1.655 + // JVMTI Native method prefixing support:
1.656 + bool is_prefixed_native() const { return access_flags().is_prefixed_native(); }
1.657 + void set_is_prefixed_native() { _access_flags.set_is_prefixed_native(); }
1.658 +
1.659 + // Rewriting support
1.660 + static methodHandle clone_with_new_data(methodHandle m, u_char* new_code, int new_code_length,
1.661 + u_char* new_compressed_linenumber_table, int new_compressed_linenumber_size, TRAPS);
1.662 +
1.663 + // jmethodID handling
1.664 + // Because the useful life-span of a jmethodID cannot be determined,
1.665 + // once created they are never reclaimed. The methods to which they refer,
1.666 + // however, can be GC'ed away if the class is unloaded or if the method is
1.667 + // made obsolete or deleted -- in these cases, the jmethodID
1.668 + // refers to NULL (as is the case for any weak reference).
1.669 + static jmethodID make_jmethod_id(ClassLoaderData* loader_data, Method* mh);
1.670 + static void destroy_jmethod_id(ClassLoaderData* loader_data, jmethodID mid);
1.671 +
1.672 + // Use resolve_jmethod_id() in situations where the caller is expected
1.673 + // to provide a valid jmethodID; the only sanity checks are in asserts;
1.674 + // result guaranteed not to be NULL.
1.675 + inline static Method* resolve_jmethod_id(jmethodID mid) {
1.676 + assert(mid != NULL, "JNI method id should not be null");
1.677 + return *((Method**)mid);
1.678 + }
1.679 +
1.680 + // Use checked_resolve_jmethod_id() in situations where the caller
1.681 + // should provide a valid jmethodID, but might not. NULL is returned
1.682 + // when the jmethodID does not refer to a valid method.
1.683 + static Method* checked_resolve_jmethod_id(jmethodID mid);
1.684 +
1.685 + static void change_method_associated_with_jmethod_id(jmethodID old_jmid_ptr, Method* new_method);
1.686 + static bool is_method_id(jmethodID mid);
1.687 +
1.688 + // Clear methods
1.689 + static void clear_jmethod_ids(ClassLoaderData* loader_data);
1.690 + static void print_jmethod_ids(ClassLoaderData* loader_data, outputStream* out) PRODUCT_RETURN;
1.691 +
1.692 + // Get this method's jmethodID -- allocate if it doesn't exist
1.693 + jmethodID jmethod_id() { methodHandle this_h(this);
1.694 + return InstanceKlass::get_jmethod_id(InstanceKlass::cast(method_holder()), this_h); }
1.695 +
1.696 + // Lookup the jmethodID for this method. Return NULL if not found.
1.697 + // NOTE that this function can be called from a signal handler
1.698 + // (see AsyncGetCallTrace support for Forte Analyzer) and this
1.699 + // needs to be async-safe. No allocation should be done and
1.700 + // so handles are not used to avoid deadlock.
1.701 + jmethodID find_jmethod_id_or_null() { return InstanceKlass::cast(method_holder())->jmethod_id_or_null(this); }
1.702 +
1.703 + // JNI static invoke cached itable index accessors
1.704 + int cached_itable_index() { return InstanceKlass::cast(method_holder())->cached_itable_index(method_idnum()); }
1.705 + void set_cached_itable_index(int index) { InstanceKlass::cast(method_holder())->set_cached_itable_index(method_idnum(), index); }
1.706 +
1.707 + // Support for inlining of intrinsic methods
1.708 + vmIntrinsics::ID intrinsic_id() const { return (vmIntrinsics::ID) _intrinsic_id; }
1.709 + void set_intrinsic_id(vmIntrinsics::ID id) { _intrinsic_id = (u1) id; }
1.710 +
1.711 + // Helper routines for intrinsic_id() and vmIntrinsics::method().
1.712 + void init_intrinsic_id(); // updates from _none if a match
1.713 + static vmSymbols::SID klass_id_for_intrinsics(Klass* holder);
1.714 +
1.715 + bool jfr_towrite() { return _jfr_towrite; }
1.716 + void set_jfr_towrite(bool towrite) { _jfr_towrite = towrite; }
1.717 +
1.718 + bool force_inline() { return _force_inline; }
1.719 + void set_force_inline(bool x) { _force_inline = x; }
1.720 + bool dont_inline() { return _dont_inline; }
1.721 + void set_dont_inline(bool x) { _dont_inline = x; }
1.722 + bool is_hidden() { return _hidden; }
1.723 + void set_hidden(bool x) { _hidden = x; }
1.724 +
1.725 + // On-stack replacement support
1.726 + bool has_osr_nmethod(int level, bool match_level) {
1.727 + return InstanceKlass::cast(method_holder())->lookup_osr_nmethod(this, InvocationEntryBci, level, match_level) != NULL;
1.728 + }
1.729 +
1.730 + nmethod* lookup_osr_nmethod_for(int bci, int level, bool match_level) {
1.731 + return InstanceKlass::cast(method_holder())->lookup_osr_nmethod(this, bci, level, match_level);
1.732 + }
1.733 +
1.734 + // Inline cache support
1.735 + void cleanup_inline_caches();
1.736 +
1.737 + // Find if klass for method is loaded
1.738 + bool is_klass_loaded_by_klass_index(int klass_index) const;
1.739 + bool is_klass_loaded(int refinfo_index, bool must_be_resolved = false) const;
1.740 +
1.741 + // Indicates whether compilation failed earlier for this method, or
1.742 + // whether it is not compilable for another reason like having a
1.743 + // breakpoint set in it.
1.744 + bool is_not_compilable(int comp_level = CompLevel_any) const;
1.745 + void set_not_compilable(int comp_level = CompLevel_all, bool report = true);
1.746 + void set_not_compilable_quietly(int comp_level = CompLevel_all) {
1.747 + set_not_compilable(comp_level, false);
1.748 + }
1.749 + bool is_not_osr_compilable(int comp_level = CompLevel_any) const {
1.750 + return is_not_compilable(comp_level) || access_flags().is_not_osr_compilable();
1.751 + }
1.752 + void set_not_osr_compilable() { _access_flags.set_not_osr_compilable(); }
1.753 + bool is_not_c1_compilable() const { return access_flags().is_not_c1_compilable(); }
1.754 + void set_not_c1_compilable() { _access_flags.set_not_c1_compilable(); }
1.755 + bool is_not_c2_compilable() const { return access_flags().is_not_c2_compilable(); }
1.756 + void set_not_c2_compilable() { _access_flags.set_not_c2_compilable(); }
1.757 +
1.758 + // Background compilation support
1.759 + bool queued_for_compilation() const { return access_flags().queued_for_compilation(); }
1.760 + void set_queued_for_compilation() { _access_flags.set_queued_for_compilation(); }
1.761 + void clear_queued_for_compilation() { _access_flags.clear_queued_for_compilation(); }
1.762 +
1.763 + // Resolve all classes in signature, return 'true' if successful
1.764 + static bool load_signature_classes(methodHandle m, TRAPS);
1.765 +
1.766 + // Return if true if not all classes references in signature, including return type, has been loaded
1.767 + static bool has_unloaded_classes_in_signature(methodHandle m, TRAPS);
1.768 +
1.769 + // Printing
1.770 + void print_short_name(outputStream* st = tty) /*PRODUCT_RETURN*/; // prints as klassname::methodname; Exposed so field engineers can debug VM
1.771 + void print_name(outputStream* st = tty) PRODUCT_RETURN; // prints as "virtual void foo(int)"
1.772 +
1.773 + // Helper routine used for method sorting
1.774 + static void sort_methods(Array<Method*>* methods,
1.775 + Array<AnnotationArray*>* methods_annotations,
1.776 + Array<AnnotationArray*>* methods_parameter_annotations,
1.777 + Array<AnnotationArray*>* methods_default_annotations,
1.778 + bool idempotent = false);
1.779 +
1.780 + // size of parameters
1.781 + void set_size_of_parameters(int size) { _size_of_parameters = size; }
1.782 +
1.783 + // Deallocation function for redefine classes or if an error occurs
1.784 + void deallocate_contents(ClassLoaderData* loader_data);
1.785 +
1.786 + // Printing
1.787 +#ifndef PRODUCT
1.788 + void print_on(outputStream* st) const;
1.789 +#endif
1.790 + void print_value_on(outputStream* st) const;
1.791 +
1.792 + const char* internal_name() const { return "{method}"; }
1.793 +
1.794 + // Verify
1.795 + void verify() { verify_on(tty); }
1.796 + void verify_on(outputStream* st);
1.797 +
1.798 + private:
1.799 +
1.800 + // Inlined elements
1.801 + address* native_function_addr() const { assert(is_native(), "must be native"); return (address*) (this+1); }
1.802 + address* signature_handler_addr() const { return native_function_addr() + 1; }
1.803 +};
1.804 +
1.805 +
1.806 +// Utility class for compressing line number tables
1.807 +
1.808 +class CompressedLineNumberWriteStream: public CompressedWriteStream {
1.809 + private:
1.810 + int _bci;
1.811 + int _line;
1.812 + public:
1.813 + // Constructor
1.814 + CompressedLineNumberWriteStream(int initial_size) : CompressedWriteStream(initial_size), _bci(0), _line(0) {}
1.815 + CompressedLineNumberWriteStream(u_char* buffer, int initial_size) : CompressedWriteStream(buffer, initial_size), _bci(0), _line(0) {}
1.816 +
1.817 + // Write (bci, line number) pair to stream
1.818 + void write_pair_regular(int bci_delta, int line_delta);
1.819 +
1.820 + inline void write_pair_inline(int bci, int line) {
1.821 + int bci_delta = bci - _bci;
1.822 + int line_delta = line - _line;
1.823 + _bci = bci;
1.824 + _line = line;
1.825 + // Skip (0,0) deltas - they do not add information and conflict with terminator.
1.826 + if (bci_delta == 0 && line_delta == 0) return;
1.827 + // Check if bci is 5-bit and line number 3-bit unsigned.
1.828 + if (((bci_delta & ~0x1F) == 0) && ((line_delta & ~0x7) == 0)) {
1.829 + // Compress into single byte.
1.830 + jubyte value = ((jubyte) bci_delta << 3) | (jubyte) line_delta;
1.831 + // Check that value doesn't match escape character.
1.832 + if (value != 0xFF) {
1.833 + write_byte(value);
1.834 + return;
1.835 + }
1.836 + }
1.837 + write_pair_regular(bci_delta, line_delta);
1.838 + }
1.839 +
1.840 +// Windows AMD64 + Apr 2005 PSDK with /O2 generates bad code for write_pair.
1.841 +// Disabling optimization doesn't work for methods in header files
1.842 +// so we force it to call through the non-optimized version in the .cpp.
1.843 +// It's gross, but it's the only way we can ensure that all callers are
1.844 +// fixed. _MSC_VER is defined by the windows compiler
1.845 +#if defined(_M_AMD64) && _MSC_VER >= 1400
1.846 + void write_pair(int bci, int line);
1.847 +#else
1.848 + void write_pair(int bci, int line) { write_pair_inline(bci, line); }
1.849 +#endif
1.850 +
1.851 + // Write end-of-stream marker
1.852 + void write_terminator() { write_byte(0); }
1.853 +};
1.854 +
1.855 +
1.856 +// Utility class for decompressing line number tables
1.857 +
1.858 +class CompressedLineNumberReadStream: public CompressedReadStream {
1.859 + private:
1.860 + int _bci;
1.861 + int _line;
1.862 + public:
1.863 + // Constructor
1.864 + CompressedLineNumberReadStream(u_char* buffer);
1.865 + // Read (bci, line number) pair from stream. Returns false at end-of-stream.
1.866 + bool read_pair();
1.867 + // Accessing bci and line number (after calling read_pair)
1.868 + int bci() const { return _bci; }
1.869 + int line() const { return _line; }
1.870 +};
1.871 +
1.872 +
1.873 +/// Fast Breakpoints.
1.874 +
1.875 +// If this structure gets more complicated (because bpts get numerous),
1.876 +// move it into its own header.
1.877 +
1.878 +// There is presently no provision for concurrent access
1.879 +// to breakpoint lists, which is only OK for JVMTI because
1.880 +// breakpoints are written only at safepoints, and are read
1.881 +// concurrently only outside of safepoints.
1.882 +
1.883 +class BreakpointInfo : public CHeapObj<mtClass> {
1.884 + friend class VMStructs;
1.885 + private:
1.886 + Bytecodes::Code _orig_bytecode;
1.887 + int _bci;
1.888 + u2 _name_index; // of method
1.889 + u2 _signature_index; // of method
1.890 + BreakpointInfo* _next; // simple storage allocation
1.891 +
1.892 + public:
1.893 + BreakpointInfo(Method* m, int bci);
1.894 +
1.895 + // accessors
1.896 + Bytecodes::Code orig_bytecode() { return _orig_bytecode; }
1.897 + void set_orig_bytecode(Bytecodes::Code code) { _orig_bytecode = code; }
1.898 + int bci() { return _bci; }
1.899 +
1.900 + BreakpointInfo* next() const { return _next; }
1.901 + void set_next(BreakpointInfo* n) { _next = n; }
1.902 +
1.903 + // helps for searchers
1.904 + bool match(const Method* m, int bci) {
1.905 + return bci == _bci && match(m);
1.906 + }
1.907 +
1.908 + bool match(const Method* m) {
1.909 + return _name_index == m->name_index() &&
1.910 + _signature_index == m->signature_index();
1.911 + }
1.912 +
1.913 + void set(Method* method);
1.914 + void clear(Method* method);
1.915 +};
1.916 +
1.917 +// Utility class for access exception handlers
1.918 +class ExceptionTable : public StackObj {
1.919 + private:
1.920 + ExceptionTableElement* _table;
1.921 + u2 _length;
1.922 +
1.923 + public:
1.924 + ExceptionTable(Method* m) {
1.925 + if (m->has_exception_handler()) {
1.926 + _table = m->exception_table_start();
1.927 + _length = m->exception_table_length();
1.928 + } else {
1.929 + _table = NULL;
1.930 + _length = 0;
1.931 + }
1.932 + }
1.933 +
1.934 + int length() const {
1.935 + return _length;
1.936 + }
1.937 +
1.938 + u2 start_pc(int idx) const {
1.939 + assert(idx < _length, "out of bounds");
1.940 + return _table[idx].start_pc;
1.941 + }
1.942 +
1.943 + void set_start_pc(int idx, u2 value) {
1.944 + assert(idx < _length, "out of bounds");
1.945 + _table[idx].start_pc = value;
1.946 + }
1.947 +
1.948 + u2 end_pc(int idx) const {
1.949 + assert(idx < _length, "out of bounds");
1.950 + return _table[idx].end_pc;
1.951 + }
1.952 +
1.953 + void set_end_pc(int idx, u2 value) {
1.954 + assert(idx < _length, "out of bounds");
1.955 + _table[idx].end_pc = value;
1.956 + }
1.957 +
1.958 + u2 handler_pc(int idx) const {
1.959 + assert(idx < _length, "out of bounds");
1.960 + return _table[idx].handler_pc;
1.961 + }
1.962 +
1.963 + void set_handler_pc(int idx, u2 value) {
1.964 + assert(idx < _length, "out of bounds");
1.965 + _table[idx].handler_pc = value;
1.966 + }
1.967 +
1.968 + u2 catch_type_index(int idx) const {
1.969 + assert(idx < _length, "out of bounds");
1.970 + return _table[idx].catch_type_index;
1.971 + }
1.972 +
1.973 + void set_catch_type_index(int idx, u2 value) {
1.974 + assert(idx < _length, "out of bounds");
1.975 + _table[idx].catch_type_index = value;
1.976 + }
1.977 +};
1.978 +
1.979 +#endif // SHARE_VM_OOPS_METHODOOP_HPP
