1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/src/share/vm/oops/method.hpp Wed Apr 27 01:25:04 2016 +0800
1.3 @@ -0,0 +1,1059 @@
1.4 +/*
1.5 + * Copyright (c) 1997, 2013, 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/constantPool.hpp"
1.37 +#include "oops/methodCounters.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 +// | methodCounters |
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 | intrinsic_id| flags |
1.81 +// |------------------------------------------------------|
1.82 +// | code (pointer) |
1.83 +// | i2i (pointer) |
1.84 +// | adapter (pointer) |
1.85 +// | from_compiled_entry (pointer) |
1.86 +// | from_interpreted_entry (pointer) |
1.87 +// |------------------------------------------------------|
1.88 +// | native_function (present only if native) |
1.89 +// | signature_handler (present only if native) |
1.90 +// |------------------------------------------------------|
1.91 +
1.92 +
1.93 +class CheckedExceptionElement;
1.94 +class LocalVariableTableElement;
1.95 +class AdapterHandlerEntry;
1.96 +class MethodData;
1.97 +class MethodCounters;
1.98 +class ConstMethod;
1.99 +class InlineTableSizes;
1.100 +class KlassSizeStats;
1.101 +
1.102 +class Method : public Metadata {
1.103 + friend class VMStructs;
1.104 + private:
1.105 + ConstMethod* _constMethod; // Method read-only data.
1.106 + MethodData* _method_data;
1.107 + MethodCounters* _method_counters;
1.108 + AccessFlags _access_flags; // Access flags
1.109 + int _vtable_index; // vtable index of this method (see VtableIndexFlag)
1.110 + // note: can have vtables with >2**16 elements (because of inheritance)
1.111 +#ifdef CC_INTERP
1.112 + int _result_index; // C++ interpreter needs for converting results to/from stack
1.113 +#endif
1.114 + u2 _method_size; // size of this object
1.115 + u1 _intrinsic_id; // vmSymbols::intrinsic_id (0 == _none)
1.116 + u1 _jfr_towrite : 1, // Flags
1.117 + _caller_sensitive : 1,
1.118 + _force_inline : 1,
1.119 + _hidden : 1,
1.120 + _dont_inline : 1,
1.121 + : 3;
1.122 +
1.123 +#ifndef PRODUCT
1.124 + int _compiled_invocation_count; // Number of nmethod invocations so far (for perf. debugging)
1.125 +#endif
1.126 + // Entry point for calling both from and to the interpreter.
1.127 + address _i2i_entry; // All-args-on-stack calling convention
1.128 + // Adapter blob (i2c/c2i) for this Method*. Set once when method is linked.
1.129 + AdapterHandlerEntry* _adapter;
1.130 + // Entry point for calling from compiled code, to compiled code if it exists
1.131 + // or else the interpreter.
1.132 + volatile address _from_compiled_entry; // Cache of: _code ? _code->entry_point() : _adapter->c2i_entry()
1.133 + // The entry point for calling both from and to compiled code is
1.134 + // "_code->entry_point()". Because of tiered compilation and de-opt, this
1.135 + // field can come and go. It can transition from NULL to not-null at any
1.136 + // time (whenever a compile completes). It can transition from not-null to
1.137 + // NULL only at safepoints (because of a de-opt).
1.138 + nmethod* volatile _code; // Points to the corresponding piece of native code
1.139 + volatile address _from_interpreted_entry; // Cache of _code ? _adapter->i2c_entry() : _i2i_entry
1.140 +
1.141 + // Constructor
1.142 + Method(ConstMethod* xconst, AccessFlags access_flags, int size);
1.143 + public:
1.144 +
1.145 + static Method* allocate(ClassLoaderData* loader_data,
1.146 + int byte_code_size,
1.147 + AccessFlags access_flags,
1.148 + InlineTableSizes* sizes,
1.149 + ConstMethod::MethodType method_type,
1.150 + TRAPS);
1.151 +
1.152 + // CDS and vtbl checking can create an empty Method to get vtbl pointer.
1.153 + Method(){}
1.154 +
1.155 + // The Method vtable is restored by this call when the Method is in the
1.156 + // shared archive. See patch_klass_vtables() in metaspaceShared.cpp for
1.157 + // all the gory details. SA, dtrace and pstack helpers distinguish metadata
1.158 + // by their vtable.
1.159 + void restore_vtable() { guarantee(is_method(), "vtable restored by this call"); }
1.160 + bool is_method() const volatile { return true; }
1.161 +
1.162 + void restore_unshareable_info(TRAPS);
1.163 +
1.164 + // accessors for instance variables
1.165 +
1.166 + ConstMethod* constMethod() const { return _constMethod; }
1.167 + void set_constMethod(ConstMethod* xconst) { _constMethod = xconst; }
1.168 +
1.169 +
1.170 + static address make_adapters(methodHandle mh, TRAPS);
1.171 + volatile address from_compiled_entry() const { return (address)OrderAccess::load_ptr_acquire(&_from_compiled_entry); }
1.172 + volatile address from_interpreted_entry() const{ return (address)OrderAccess::load_ptr_acquire(&_from_interpreted_entry); }
1.173 +
1.174 + // access flag
1.175 + AccessFlags access_flags() const { return _access_flags; }
1.176 + void set_access_flags(AccessFlags flags) { _access_flags = flags; }
1.177 +
1.178 + // name
1.179 + Symbol* name() const { return constants()->symbol_at(name_index()); }
1.180 + int name_index() const { return constMethod()->name_index(); }
1.181 + void set_name_index(int index) { constMethod()->set_name_index(index); }
1.182 +
1.183 + // signature
1.184 + Symbol* signature() const { return constants()->symbol_at(signature_index()); }
1.185 + int signature_index() const { return constMethod()->signature_index(); }
1.186 + void set_signature_index(int index) { constMethod()->set_signature_index(index); }
1.187 +
1.188 + // generics support
1.189 + Symbol* generic_signature() const { int idx = generic_signature_index(); return ((idx != 0) ? constants()->symbol_at(idx) : (Symbol*)NULL); }
1.190 + int generic_signature_index() const { return constMethod()->generic_signature_index(); }
1.191 + void set_generic_signature_index(int index) { constMethod()->set_generic_signature_index(index); }
1.192 +
1.193 + // annotations support
1.194 + AnnotationArray* annotations() const {
1.195 + return constMethod()->method_annotations();
1.196 + }
1.197 + AnnotationArray* parameter_annotations() const {
1.198 + return constMethod()->parameter_annotations();
1.199 + }
1.200 + AnnotationArray* annotation_default() const {
1.201 + return constMethod()->default_annotations();
1.202 + }
1.203 + AnnotationArray* type_annotations() const {
1.204 + return constMethod()->type_annotations();
1.205 + }
1.206 +
1.207 +#ifdef CC_INTERP
1.208 + void set_result_index(BasicType type);
1.209 + int result_index() { return _result_index; }
1.210 +#endif
1.211 +
1.212 + // Helper routine: get klass name + "." + method name + signature as
1.213 + // C string, for the purpose of providing more useful NoSuchMethodErrors
1.214 + // and fatal error handling. The string is allocated in resource
1.215 + // area if a buffer is not provided by the caller.
1.216 + char* name_and_sig_as_C_string() const;
1.217 + char* name_and_sig_as_C_string(char* buf, int size) const;
1.218 +
1.219 + // Static routine in the situations we don't have a Method*
1.220 + static char* name_and_sig_as_C_string(Klass* klass, Symbol* method_name, Symbol* signature);
1.221 + static char* name_and_sig_as_C_string(Klass* klass, Symbol* method_name, Symbol* signature, char* buf, int size);
1.222 +
1.223 + Bytecodes::Code java_code_at(int bci) const {
1.224 + return Bytecodes::java_code_at(this, bcp_from(bci));
1.225 + }
1.226 + Bytecodes::Code code_at(int bci) const {
1.227 + return Bytecodes::code_at(this, bcp_from(bci));
1.228 + }
1.229 +
1.230 + // JVMTI breakpoints
1.231 + Bytecodes::Code orig_bytecode_at(int bci) const;
1.232 + void set_orig_bytecode_at(int bci, Bytecodes::Code code);
1.233 + void set_breakpoint(int bci);
1.234 + void clear_breakpoint(int bci);
1.235 + void clear_all_breakpoints();
1.236 + // Tracking number of breakpoints, for fullspeed debugging.
1.237 + // Only mutated by VM thread.
1.238 + u2 number_of_breakpoints() const {
1.239 + if (method_counters() == NULL) {
1.240 + return 0;
1.241 + } else {
1.242 + return method_counters()->number_of_breakpoints();
1.243 + }
1.244 + }
1.245 + void incr_number_of_breakpoints(TRAPS) {
1.246 + MethodCounters* mcs = get_method_counters(CHECK);
1.247 + if (mcs != NULL) {
1.248 + mcs->incr_number_of_breakpoints();
1.249 + }
1.250 + }
1.251 + void decr_number_of_breakpoints(TRAPS) {
1.252 + MethodCounters* mcs = get_method_counters(CHECK);
1.253 + if (mcs != NULL) {
1.254 + mcs->decr_number_of_breakpoints();
1.255 + }
1.256 + }
1.257 + // Initialization only
1.258 + void clear_number_of_breakpoints() {
1.259 + if (method_counters() != NULL) {
1.260 + method_counters()->clear_number_of_breakpoints();
1.261 + }
1.262 + }
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 constMethod()->max_stack(); }
1.286 + int max_stack() const { return constMethod()->max_stack() + extra_stack_entries(); }
1.287 + void set_max_stack(int size) { constMethod()->set_max_stack(size); }
1.288 +
1.289 + // max locals
1.290 + int max_locals() const { return constMethod()->max_locals(); }
1.291 + void set_max_locals(int size) { constMethod()->set_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(TRAPS) {
1.300 + MethodCounters* mcs = get_method_counters(CHECK);
1.301 + if (mcs != NULL) {
1.302 + mcs->interpreter_throwout_increment();
1.303 + }
1.304 + }
1.305 +
1.306 + int interpreter_throwout_count() const {
1.307 + if (method_counters() == NULL) {
1.308 + return 0;
1.309 + } else {
1.310 + return method_counters()->interpreter_throwout_count();
1.311 + }
1.312 + }
1.313 +
1.314 + // size of parameters
1.315 + int size_of_parameters() const { return constMethod()->size_of_parameters(); }
1.316 + void set_size_of_parameters(int size) { constMethod()->set_size_of_parameters(size); }
1.317 +
1.318 + bool has_stackmap_table() const {
1.319 + return constMethod()->has_stackmap_table();
1.320 + }
1.321 +
1.322 + Array<u1>* stackmap_data() const {
1.323 + return constMethod()->stackmap_data();
1.324 + }
1.325 +
1.326 + void set_stackmap_data(Array<u1>* sd) {
1.327 + constMethod()->set_stackmap_data(sd);
1.328 + }
1.329 +
1.330 + // exception handler table
1.331 + bool has_exception_handler() const
1.332 + { return constMethod()->has_exception_handler(); }
1.333 + int exception_table_length() const
1.334 + { return constMethod()->exception_table_length(); }
1.335 + ExceptionTableElement* exception_table_start() const
1.336 + { return constMethod()->exception_table_start(); }
1.337 +
1.338 + // Finds the first entry point bci of an exception handler for an
1.339 + // exception of klass ex_klass thrown at throw_bci. A value of NULL
1.340 + // for ex_klass indicates that the exception klass is not known; in
1.341 + // this case it matches any constraint class. Returns -1 if the
1.342 + // exception cannot be handled in this method. The handler
1.343 + // constraint classes are loaded if necessary. Note that this may
1.344 + // throw an exception if loading of the constraint classes causes
1.345 + // an IllegalAccessError (bugid 4307310) or an OutOfMemoryError.
1.346 + // If an exception is thrown, returns the bci of the
1.347 + // exception handler which caused the exception to be thrown, which
1.348 + // is needed for proper retries. See, for example,
1.349 + // InterpreterRuntime::exception_handler_for_exception.
1.350 + static int fast_exception_handler_bci_for(methodHandle mh, KlassHandle ex_klass, int throw_bci, TRAPS);
1.351 +
1.352 + // method data access
1.353 + MethodData* method_data() const {
1.354 + return _method_data;
1.355 + }
1.356 +
1.357 + void set_method_data(MethodData* data) {
1.358 + // The store into method must be released. On platforms without
1.359 + // total store order (TSO) the reference may become visible before
1.360 + // the initialization of data otherwise.
1.361 + OrderAccess::release_store_ptr((volatile void *)&_method_data, data);
1.362 + }
1.363 +
1.364 + MethodCounters* method_counters() const {
1.365 + return _method_counters;
1.366 + }
1.367 +
1.368 + void set_method_counters(MethodCounters* counters) {
1.369 + // The store into method must be released. On platforms without
1.370 + // total store order (TSO) the reference may become visible before
1.371 + // the initialization of data otherwise.
1.372 + OrderAccess::release_store_ptr((volatile void *)&_method_counters, counters);
1.373 + }
1.374 +
1.375 +#ifdef TIERED
1.376 + // We are reusing interpreter_invocation_count as a holder for the previous event count!
1.377 + // We can do that since interpreter_invocation_count is not used in tiered.
1.378 + int prev_event_count() const {
1.379 + if (method_counters() == NULL) {
1.380 + return 0;
1.381 + } else {
1.382 + return method_counters()->interpreter_invocation_count();
1.383 + }
1.384 + }
1.385 + void set_prev_event_count(int count, TRAPS) {
1.386 + MethodCounters* mcs = get_method_counters(CHECK);
1.387 + if (mcs != NULL) {
1.388 + mcs->set_interpreter_invocation_count(count);
1.389 + }
1.390 + }
1.391 + jlong prev_time() const {
1.392 + return method_counters() == NULL ? 0 : method_counters()->prev_time();
1.393 + }
1.394 + void set_prev_time(jlong time, TRAPS) {
1.395 + MethodCounters* mcs = get_method_counters(CHECK);
1.396 + if (mcs != NULL) {
1.397 + mcs->set_prev_time(time);
1.398 + }
1.399 + }
1.400 + float rate() const {
1.401 + return method_counters() == NULL ? 0 : method_counters()->rate();
1.402 + }
1.403 + void set_rate(float rate, TRAPS) {
1.404 + MethodCounters* mcs = get_method_counters(CHECK);
1.405 + if (mcs != NULL) {
1.406 + mcs->set_rate(rate);
1.407 + }
1.408 + }
1.409 +#endif
1.410 +
1.411 + int invocation_count();
1.412 + int backedge_count();
1.413 +
1.414 + bool was_executed_more_than(int n);
1.415 + bool was_never_executed() { return !was_executed_more_than(0); }
1.416 +
1.417 + static void build_interpreter_method_data(methodHandle method, TRAPS);
1.418 +
1.419 + static MethodCounters* build_method_counters(Method* m, TRAPS);
1.420 +
1.421 + int interpreter_invocation_count() {
1.422 + if (TieredCompilation) return invocation_count();
1.423 + else return (method_counters() == NULL) ? 0 :
1.424 + method_counters()->interpreter_invocation_count();
1.425 + }
1.426 + int increment_interpreter_invocation_count(TRAPS) {
1.427 + if (TieredCompilation) ShouldNotReachHere();
1.428 + MethodCounters* mcs = get_method_counters(CHECK_0);
1.429 + return (mcs == NULL) ? 0 : mcs->increment_interpreter_invocation_count();
1.430 + }
1.431 +
1.432 +#ifndef PRODUCT
1.433 + int compiled_invocation_count() const { return _compiled_invocation_count; }
1.434 + void set_compiled_invocation_count(int count) { _compiled_invocation_count = count; }
1.435 +#endif // not PRODUCT
1.436 +
1.437 + // Clear (non-shared space) pointers which could not be relevant
1.438 + // if this (shared) method were mapped into another JVM.
1.439 + void remove_unshareable_info();
1.440 +
1.441 + // nmethod/verified compiler entry
1.442 + address verified_code_entry();
1.443 + bool check_code() const; // Not inline to avoid circular ref
1.444 + nmethod* volatile code() const { assert( check_code(), "" ); return (nmethod *)OrderAccess::load_ptr_acquire(&_code); }
1.445 + void clear_code(); // Clear out any compiled code
1.446 + static void set_code(methodHandle mh, nmethod* code);
1.447 + void set_adapter_entry(AdapterHandlerEntry* adapter) { _adapter = adapter; }
1.448 + address get_i2c_entry();
1.449 + address get_c2i_entry();
1.450 + address get_c2i_unverified_entry();
1.451 + AdapterHandlerEntry* adapter() { return _adapter; }
1.452 + // setup entry points
1.453 + void link_method(methodHandle method, TRAPS);
1.454 + // clear entry points. Used by sharing code
1.455 + void unlink_method();
1.456 +
1.457 + // vtable index
1.458 + enum VtableIndexFlag {
1.459 + // Valid vtable indexes are non-negative (>= 0).
1.460 + // These few negative values are used as sentinels.
1.461 + itable_index_max = -10, // first itable index, growing downward
1.462 + pending_itable_index = -9, // itable index will be assigned
1.463 + invalid_vtable_index = -4, // distinct from any valid vtable index
1.464 + garbage_vtable_index = -3, // not yet linked; no vtable layout yet
1.465 + nonvirtual_vtable_index = -2 // there is no need for vtable dispatch
1.466 + // 6330203 Note: Do not use -1, which was overloaded with many meanings.
1.467 + };
1.468 + DEBUG_ONLY(bool valid_vtable_index() const { return _vtable_index >= nonvirtual_vtable_index; })
1.469 + bool has_vtable_index() const { return _vtable_index >= 0; }
1.470 + int vtable_index() const { return _vtable_index; }
1.471 + void set_vtable_index(int index) { _vtable_index = index; }
1.472 + DEBUG_ONLY(bool valid_itable_index() const { return _vtable_index <= pending_itable_index; })
1.473 + bool has_itable_index() const { return _vtable_index <= itable_index_max; }
1.474 + int itable_index() const { assert(valid_itable_index(), "");
1.475 + return itable_index_max - _vtable_index; }
1.476 + void set_itable_index(int index) { _vtable_index = itable_index_max - index; assert(valid_itable_index(), ""); }
1.477 +
1.478 + // interpreter entry
1.479 + address interpreter_entry() const { return _i2i_entry; }
1.480 + // Only used when first initialize so we can set _i2i_entry and _from_interpreted_entry
1.481 + void set_interpreter_entry(address entry) { _i2i_entry = entry; _from_interpreted_entry = entry; }
1.482 +
1.483 + // native function (used for native methods only)
1.484 + enum {
1.485 + native_bind_event_is_interesting = true
1.486 + };
1.487 + address native_function() const { return *(native_function_addr()); }
1.488 + address critical_native_function();
1.489 +
1.490 + // Must specify a real function (not NULL).
1.491 + // Use clear_native_function() to unregister.
1.492 + void set_native_function(address function, bool post_event_flag);
1.493 + bool has_native_function() const;
1.494 + void clear_native_function();
1.495 +
1.496 + // signature handler (used for native methods only)
1.497 + address signature_handler() const { return *(signature_handler_addr()); }
1.498 + void set_signature_handler(address handler);
1.499 +
1.500 + // Interpreter oopmap support
1.501 + void mask_for(int bci, InterpreterOopMap* mask);
1.502 +
1.503 +#ifndef PRODUCT
1.504 + // operations on invocation counter
1.505 + void print_invocation_count();
1.506 +#endif
1.507 +
1.508 + // byte codes
1.509 + void set_code(address code) { return constMethod()->set_code(code); }
1.510 + address code_base() const { return constMethod()->code_base(); }
1.511 + bool contains(address bcp) const { return constMethod()->contains(bcp); }
1.512 +
1.513 + // prints byte codes
1.514 + void print_codes() const { print_codes_on(tty); }
1.515 + void print_codes_on(outputStream* st) const PRODUCT_RETURN;
1.516 + void print_codes_on(int from, int to, outputStream* st) const PRODUCT_RETURN;
1.517 +
1.518 + // method parameters
1.519 + bool has_method_parameters() const
1.520 + { return constMethod()->has_method_parameters(); }
1.521 + int method_parameters_length() const
1.522 + { return constMethod()->method_parameters_length(); }
1.523 + MethodParametersElement* method_parameters_start() const
1.524 + { return constMethod()->method_parameters_start(); }
1.525 +
1.526 + // checked exceptions
1.527 + int checked_exceptions_length() const
1.528 + { return constMethod()->checked_exceptions_length(); }
1.529 + CheckedExceptionElement* checked_exceptions_start() const
1.530 + { return constMethod()->checked_exceptions_start(); }
1.531 +
1.532 + // localvariable table
1.533 + bool has_localvariable_table() const
1.534 + { return constMethod()->has_localvariable_table(); }
1.535 + int localvariable_table_length() const
1.536 + { return constMethod()->localvariable_table_length(); }
1.537 + LocalVariableTableElement* localvariable_table_start() const
1.538 + { return constMethod()->localvariable_table_start(); }
1.539 +
1.540 + bool has_linenumber_table() const
1.541 + { return constMethod()->has_linenumber_table(); }
1.542 + u_char* compressed_linenumber_table() const
1.543 + { return constMethod()->compressed_linenumber_table(); }
1.544 +
1.545 + // method holder (the Klass* holding this method)
1.546 + InstanceKlass* method_holder() const { return constants()->pool_holder(); }
1.547 +
1.548 + void compute_size_of_parameters(Thread *thread); // word size of parameters (receiver if any + arguments)
1.549 + Symbol* klass_name() const; // returns the name of the method holder
1.550 + BasicType result_type() const; // type of the method result
1.551 + int result_type_index() const; // type index of the method result
1.552 + bool is_returning_oop() const { BasicType r = result_type(); return (r == T_OBJECT || r == T_ARRAY); }
1.553 + bool is_returning_fp() const { BasicType r = result_type(); return (r == T_FLOAT || r == T_DOUBLE); }
1.554 +
1.555 + // Checked exceptions thrown by this method (resolved to mirrors)
1.556 + objArrayHandle resolved_checked_exceptions(TRAPS) { return resolved_checked_exceptions_impl(this, THREAD); }
1.557 +
1.558 + // Access flags
1.559 + bool is_public() const { return access_flags().is_public(); }
1.560 + bool is_private() const { return access_flags().is_private(); }
1.561 + bool is_protected() const { return access_flags().is_protected(); }
1.562 + bool is_package_private() const { return !is_public() && !is_private() && !is_protected(); }
1.563 + bool is_static() const { return access_flags().is_static(); }
1.564 + bool is_final() const { return access_flags().is_final(); }
1.565 + bool is_synchronized() const { return access_flags().is_synchronized();}
1.566 + bool is_native() const { return access_flags().is_native(); }
1.567 + bool is_abstract() const { return access_flags().is_abstract(); }
1.568 + bool is_strict() const { return access_flags().is_strict(); }
1.569 + bool is_synthetic() const { return access_flags().is_synthetic(); }
1.570 +
1.571 + // returns true if contains only return operation
1.572 + bool is_empty_method() const;
1.573 +
1.574 + // returns true if this is a vanilla constructor
1.575 + bool is_vanilla_constructor() const;
1.576 +
1.577 + // checks method and its method holder
1.578 + bool is_final_method() const;
1.579 + bool is_final_method(AccessFlags class_access_flags) const;
1.580 + bool is_default_method() const;
1.581 +
1.582 + // true if method needs no dynamic dispatch (final and/or no vtable entry)
1.583 + bool can_be_statically_bound() const;
1.584 + bool can_be_statically_bound(AccessFlags class_access_flags) const;
1.585 +
1.586 + // returns true if the method has any backward branches.
1.587 + bool has_loops() {
1.588 + return access_flags().loops_flag_init() ? access_flags().has_loops() : compute_has_loops_flag();
1.589 + };
1.590 +
1.591 + bool compute_has_loops_flag();
1.592 +
1.593 + bool has_jsrs() {
1.594 + return access_flags().has_jsrs();
1.595 + };
1.596 + void set_has_jsrs() {
1.597 + _access_flags.set_has_jsrs();
1.598 + }
1.599 +
1.600 + // returns true if the method has any monitors.
1.601 + bool has_monitors() const { return is_synchronized() || access_flags().has_monitor_bytecodes(); }
1.602 + bool has_monitor_bytecodes() const { return access_flags().has_monitor_bytecodes(); }
1.603 +
1.604 + void set_has_monitor_bytecodes() { _access_flags.set_has_monitor_bytecodes(); }
1.605 +
1.606 + // monitor matching. This returns a conservative estimate of whether the monitorenter/monitorexit bytecodes
1.607 + // propererly nest in the method. It might return false, even though they actually nest properly, since the info.
1.608 + // has not been computed yet.
1.609 + bool guaranteed_monitor_matching() const { return access_flags().is_monitor_matching(); }
1.610 + void set_guaranteed_monitor_matching() { _access_flags.set_monitor_matching(); }
1.611 +
1.612 + // returns true if the method is an accessor function (setter/getter).
1.613 + bool is_accessor() const;
1.614 +
1.615 + // returns true if the method is an initializer (<init> or <clinit>).
1.616 + bool is_initializer() const;
1.617 +
1.618 + // returns true if the method is static OR if the classfile version < 51
1.619 + bool has_valid_initializer_flags() const;
1.620 +
1.621 + // returns true if the method name is <clinit> and the method has
1.622 + // valid static initializer flags.
1.623 + bool is_static_initializer() const;
1.624 +
1.625 + // compiled code support
1.626 + // NOTE: code() is inherently racy as deopt can be clearing code
1.627 + // simultaneously. Use with caution.
1.628 + bool has_compiled_code() const { return code() != NULL; }
1.629 +
1.630 + // sizing
1.631 + static int header_size() { return sizeof(Method)/HeapWordSize; }
1.632 + static int size(bool is_native);
1.633 + int size() const { return method_size(); }
1.634 +#if INCLUDE_SERVICES
1.635 + void collect_statistics(KlassSizeStats *sz) const;
1.636 +#endif
1.637 +
1.638 + // interpreter support
1.639 + static ByteSize const_offset() { return byte_offset_of(Method, _constMethod ); }
1.640 + static ByteSize access_flags_offset() { return byte_offset_of(Method, _access_flags ); }
1.641 +#ifdef CC_INTERP
1.642 + static ByteSize result_index_offset() { return byte_offset_of(Method, _result_index ); }
1.643 +#endif /* CC_INTERP */
1.644 + static ByteSize from_compiled_offset() { return byte_offset_of(Method, _from_compiled_entry); }
1.645 + static ByteSize code_offset() { return byte_offset_of(Method, _code); }
1.646 + static ByteSize method_data_offset() {
1.647 + return byte_offset_of(Method, _method_data);
1.648 + }
1.649 + static ByteSize method_counters_offset() {
1.650 + return byte_offset_of(Method, _method_counters);
1.651 + }
1.652 +#ifndef PRODUCT
1.653 + static ByteSize compiled_invocation_counter_offset() { return byte_offset_of(Method, _compiled_invocation_count); }
1.654 +#endif // not PRODUCT
1.655 + static ByteSize native_function_offset() { return in_ByteSize(sizeof(Method)); }
1.656 + static ByteSize from_interpreted_offset() { return byte_offset_of(Method, _from_interpreted_entry ); }
1.657 + static ByteSize interpreter_entry_offset() { return byte_offset_of(Method, _i2i_entry ); }
1.658 + static ByteSize signature_handler_offset() { return in_ByteSize(sizeof(Method) + wordSize); }
1.659 +
1.660 + // for code generation
1.661 + static int method_data_offset_in_bytes() { return offset_of(Method, _method_data); }
1.662 + static int intrinsic_id_offset_in_bytes() { return offset_of(Method, _intrinsic_id); }
1.663 + static int intrinsic_id_size_in_bytes() { return sizeof(u1); }
1.664 +
1.665 + // Static methods that are used to implement member methods where an exposed this pointer
1.666 + // is needed due to possible GCs
1.667 + static objArrayHandle resolved_checked_exceptions_impl(Method* this_oop, TRAPS);
1.668 +
1.669 + // Returns the byte code index from the byte code pointer
1.670 + int bci_from(address bcp) const;
1.671 + address bcp_from(int bci) const;
1.672 + int validate_bci_from_bcx(intptr_t bcx) const;
1.673 +
1.674 + // Returns the line number for a bci if debugging information for the method is prowided,
1.675 + // -1 is returned otherwise.
1.676 + int line_number_from_bci(int bci) const;
1.677 +
1.678 + // Reflection support
1.679 + bool is_overridden_in(Klass* k) const;
1.680 +
1.681 + // Stack walking support
1.682 + bool is_ignored_by_security_stack_walk() const;
1.683 +
1.684 + // JSR 292 support
1.685 + bool is_method_handle_intrinsic() const; // MethodHandles::is_signature_polymorphic_intrinsic(intrinsic_id)
1.686 + bool is_compiled_lambda_form() const; // intrinsic_id() == vmIntrinsics::_compiledLambdaForm
1.687 + bool has_member_arg() const; // intrinsic_id() == vmIntrinsics::_linkToSpecial, etc.
1.688 + static methodHandle make_method_handle_intrinsic(vmIntrinsics::ID iid, // _invokeBasic, _linkToVirtual
1.689 + Symbol* signature, //anything at all
1.690 + TRAPS);
1.691 + static Klass* check_non_bcp_klass(Klass* klass);
1.692 +
1.693 + // How many extra stack entries for invokedynamic when it's enabled
1.694 + static const int extra_stack_entries_for_jsr292 = 1;
1.695 +
1.696 + // this operates only on invoke methods:
1.697 + // presize interpreter frames for extra interpreter stack entries, if needed
1.698 + // Account for the extra appendix argument for invokehandle/invokedynamic
1.699 + static int extra_stack_entries() { return EnableInvokeDynamic ? extra_stack_entries_for_jsr292 : 0; }
1.700 + static int extra_stack_words(); // = extra_stack_entries() * Interpreter::stackElementSize
1.701 +
1.702 + // RedefineClasses() support:
1.703 + bool is_old() const { return access_flags().is_old(); }
1.704 + void set_is_old() { _access_flags.set_is_old(); }
1.705 + bool is_obsolete() const { return access_flags().is_obsolete(); }
1.706 + void set_is_obsolete() { _access_flags.set_is_obsolete(); }
1.707 + bool on_stack() const { return access_flags().on_stack(); }
1.708 + void set_on_stack(const bool value);
1.709 +
1.710 + // see the definition in Method*.cpp for the gory details
1.711 + bool should_not_be_cached() const;
1.712 +
1.713 + // JVMTI Native method prefixing support:
1.714 + bool is_prefixed_native() const { return access_flags().is_prefixed_native(); }
1.715 + void set_is_prefixed_native() { _access_flags.set_is_prefixed_native(); }
1.716 +
1.717 + // Rewriting support
1.718 + static methodHandle clone_with_new_data(methodHandle m, u_char* new_code, int new_code_length,
1.719 + u_char* new_compressed_linenumber_table, int new_compressed_linenumber_size, TRAPS);
1.720 +
1.721 + // jmethodID handling
1.722 + // Because the useful life-span of a jmethodID cannot be determined,
1.723 + // once created they are never reclaimed. The methods to which they refer,
1.724 + // however, can be GC'ed away if the class is unloaded or if the method is
1.725 + // made obsolete or deleted -- in these cases, the jmethodID
1.726 + // refers to NULL (as is the case for any weak reference).
1.727 + static jmethodID make_jmethod_id(ClassLoaderData* loader_data, Method* mh);
1.728 + static void destroy_jmethod_id(ClassLoaderData* loader_data, jmethodID mid);
1.729 +
1.730 + // Use resolve_jmethod_id() in situations where the caller is expected
1.731 + // to provide a valid jmethodID; the only sanity checks are in asserts;
1.732 + // result guaranteed not to be NULL.
1.733 + inline static Method* resolve_jmethod_id(jmethodID mid) {
1.734 + assert(mid != NULL, "JNI method id should not be null");
1.735 + return *((Method**)mid);
1.736 + }
1.737 +
1.738 + // Use checked_resolve_jmethod_id() in situations where the caller
1.739 + // should provide a valid jmethodID, but might not. NULL is returned
1.740 + // when the jmethodID does not refer to a valid method.
1.741 + static Method* checked_resolve_jmethod_id(jmethodID mid);
1.742 +
1.743 + static void change_method_associated_with_jmethod_id(jmethodID old_jmid_ptr, Method* new_method);
1.744 + static bool is_method_id(jmethodID mid);
1.745 +
1.746 + // Clear methods
1.747 + static void clear_jmethod_ids(ClassLoaderData* loader_data);
1.748 + static void print_jmethod_ids(ClassLoaderData* loader_data, outputStream* out) PRODUCT_RETURN;
1.749 +
1.750 + // Get this method's jmethodID -- allocate if it doesn't exist
1.751 + jmethodID jmethod_id() { methodHandle this_h(this);
1.752 + return InstanceKlass::get_jmethod_id(method_holder(), this_h); }
1.753 +
1.754 + // Lookup the jmethodID for this method. Return NULL if not found.
1.755 + // NOTE that this function can be called from a signal handler
1.756 + // (see AsyncGetCallTrace support for Forte Analyzer) and this
1.757 + // needs to be async-safe. No allocation should be done and
1.758 + // so handles are not used to avoid deadlock.
1.759 + jmethodID find_jmethod_id_or_null() { return method_holder()->jmethod_id_or_null(this); }
1.760 +
1.761 + // Support for inlining of intrinsic methods
1.762 + vmIntrinsics::ID intrinsic_id() const { return (vmIntrinsics::ID) _intrinsic_id; }
1.763 + void set_intrinsic_id(vmIntrinsics::ID id) { _intrinsic_id = (u1) id; }
1.764 +
1.765 + // Helper routines for intrinsic_id() and vmIntrinsics::method().
1.766 + void init_intrinsic_id(); // updates from _none if a match
1.767 + static vmSymbols::SID klass_id_for_intrinsics(Klass* holder);
1.768 +
1.769 + bool jfr_towrite() { return _jfr_towrite; }
1.770 + void set_jfr_towrite(bool x) { _jfr_towrite = x; }
1.771 + bool caller_sensitive() { return _caller_sensitive; }
1.772 + void set_caller_sensitive(bool x) { _caller_sensitive = x; }
1.773 + bool force_inline() { return _force_inline; }
1.774 + void set_force_inline(bool x) { _force_inline = x; }
1.775 + bool dont_inline() { return _dont_inline; }
1.776 + void set_dont_inline(bool x) { _dont_inline = x; }
1.777 + bool is_hidden() { return _hidden; }
1.778 + void set_hidden(bool x) { _hidden = x; }
1.779 + ConstMethod::MethodType method_type() const {
1.780 + return _constMethod->method_type();
1.781 + }
1.782 + bool is_overpass() const { return method_type() == ConstMethod::OVERPASS; }
1.783 +
1.784 + // On-stack replacement support
1.785 + bool has_osr_nmethod(int level, bool match_level) {
1.786 + return method_holder()->lookup_osr_nmethod(this, InvocationEntryBci, level, match_level) != NULL;
1.787 + }
1.788 +
1.789 + nmethod* lookup_osr_nmethod_for(int bci, int level, bool match_level) {
1.790 + return method_holder()->lookup_osr_nmethod(this, bci, level, match_level);
1.791 + }
1.792 +
1.793 + // Inline cache support
1.794 + void cleanup_inline_caches();
1.795 +
1.796 + // Find if klass for method is loaded
1.797 + bool is_klass_loaded_by_klass_index(int klass_index) const;
1.798 + bool is_klass_loaded(int refinfo_index, bool must_be_resolved = false) const;
1.799 +
1.800 + // Indicates whether compilation failed earlier for this method, or
1.801 + // whether it is not compilable for another reason like having a
1.802 + // breakpoint set in it.
1.803 + bool is_not_compilable(int comp_level = CompLevel_any) const;
1.804 + void set_not_compilable(int comp_level = CompLevel_all, bool report = true, const char* reason = NULL);
1.805 + void set_not_compilable_quietly(int comp_level = CompLevel_all) {
1.806 + set_not_compilable(comp_level, false);
1.807 + }
1.808 + bool is_not_osr_compilable(int comp_level = CompLevel_any) const;
1.809 + void set_not_osr_compilable(int comp_level = CompLevel_all, bool report = true, const char* reason = NULL);
1.810 + void set_not_osr_compilable_quietly(int comp_level = CompLevel_all) {
1.811 + set_not_osr_compilable(comp_level, false);
1.812 + }
1.813 + bool is_always_compilable() const;
1.814 +
1.815 + private:
1.816 + void print_made_not_compilable(int comp_level, bool is_osr, bool report, const char* reason);
1.817 +
1.818 + public:
1.819 + MethodCounters* get_method_counters(TRAPS) {
1.820 + if (_method_counters == NULL) {
1.821 + build_method_counters(this, CHECK_AND_CLEAR_NULL);
1.822 + }
1.823 + return _method_counters;
1.824 + }
1.825 +
1.826 + bool is_not_c1_compilable() const { return access_flags().is_not_c1_compilable(); }
1.827 + void set_not_c1_compilable() { _access_flags.set_not_c1_compilable(); }
1.828 + void clear_not_c1_compilable() { _access_flags.clear_not_c1_compilable(); }
1.829 + bool is_not_c2_compilable() const { return access_flags().is_not_c2_compilable(); }
1.830 + void set_not_c2_compilable() { _access_flags.set_not_c2_compilable(); }
1.831 + void clear_not_c2_compilable() { _access_flags.clear_not_c2_compilable(); }
1.832 +
1.833 + bool is_not_c1_osr_compilable() const { return is_not_c1_compilable(); } // don't waste an accessFlags bit
1.834 + void set_not_c1_osr_compilable() { set_not_c1_compilable(); } // don't waste an accessFlags bit
1.835 + void clear_not_c1_osr_compilable() { clear_not_c1_compilable(); } // don't waste an accessFlags bit
1.836 + bool is_not_c2_osr_compilable() const { return access_flags().is_not_c2_osr_compilable(); }
1.837 + void set_not_c2_osr_compilable() { _access_flags.set_not_c2_osr_compilable(); }
1.838 + void clear_not_c2_osr_compilable() { _access_flags.clear_not_c2_osr_compilable(); }
1.839 +
1.840 + // Background compilation support
1.841 + bool queued_for_compilation() const { return access_flags().queued_for_compilation(); }
1.842 + void set_queued_for_compilation() { _access_flags.set_queued_for_compilation(); }
1.843 + void clear_queued_for_compilation() { _access_flags.clear_queued_for_compilation(); }
1.844 +
1.845 + // Resolve all classes in signature, return 'true' if successful
1.846 + static bool load_signature_classes(methodHandle m, TRAPS);
1.847 +
1.848 + // Return if true if not all classes references in signature, including return type, has been loaded
1.849 + static bool has_unloaded_classes_in_signature(methodHandle m, TRAPS);
1.850 +
1.851 + // Printing
1.852 + void print_short_name(outputStream* st = tty); // prints as klassname::methodname; Exposed so field engineers can debug VM
1.853 +#if INCLUDE_JVMTI
1.854 + void print_name(outputStream* st = tty); // prints as "virtual void foo(int)"; exposed for TraceRedefineClasses
1.855 +#else
1.856 + void print_name(outputStream* st = tty) PRODUCT_RETURN; // prints as "virtual void foo(int)"
1.857 +#endif
1.858 +
1.859 + // Helper routine used for method sorting
1.860 + static void sort_methods(Array<Method*>* methods, bool idempotent = false, bool set_idnums = true);
1.861 +
1.862 + // Deallocation function for redefine classes or if an error occurs
1.863 + void deallocate_contents(ClassLoaderData* loader_data);
1.864 +
1.865 + // Printing
1.866 +#ifndef PRODUCT
1.867 + void print_on(outputStream* st) const;
1.868 +#endif
1.869 + void print_value_on(outputStream* st) const;
1.870 +
1.871 + const char* internal_name() const { return "{method}"; }
1.872 +
1.873 + // Check for valid method pointer
1.874 + static bool has_method_vptr(const void* ptr);
1.875 + bool is_valid_method() const;
1.876 +
1.877 + // Verify
1.878 + void verify() { verify_on(tty); }
1.879 + void verify_on(outputStream* st);
1.880 +
1.881 + private:
1.882 +
1.883 + // Inlined elements
1.884 + address* native_function_addr() const { assert(is_native(), "must be native"); return (address*) (this+1); }
1.885 + address* signature_handler_addr() const { return native_function_addr() + 1; }
1.886 +};
1.887 +
1.888 +
1.889 +// Utility class for compressing line number tables
1.890 +
1.891 +class CompressedLineNumberWriteStream: public CompressedWriteStream {
1.892 + private:
1.893 + int _bci;
1.894 + int _line;
1.895 + public:
1.896 + // Constructor
1.897 + CompressedLineNumberWriteStream(int initial_size) : CompressedWriteStream(initial_size), _bci(0), _line(0) {}
1.898 + CompressedLineNumberWriteStream(u_char* buffer, int initial_size) : CompressedWriteStream(buffer, initial_size), _bci(0), _line(0) {}
1.899 +
1.900 + // Write (bci, line number) pair to stream
1.901 + void write_pair_regular(int bci_delta, int line_delta);
1.902 +
1.903 + inline void write_pair_inline(int bci, int line) {
1.904 + int bci_delta = bci - _bci;
1.905 + int line_delta = line - _line;
1.906 + _bci = bci;
1.907 + _line = line;
1.908 + // Skip (0,0) deltas - they do not add information and conflict with terminator.
1.909 + if (bci_delta == 0 && line_delta == 0) return;
1.910 + // Check if bci is 5-bit and line number 3-bit unsigned.
1.911 + if (((bci_delta & ~0x1F) == 0) && ((line_delta & ~0x7) == 0)) {
1.912 + // Compress into single byte.
1.913 + jubyte value = ((jubyte) bci_delta << 3) | (jubyte) line_delta;
1.914 + // Check that value doesn't match escape character.
1.915 + if (value != 0xFF) {
1.916 + write_byte(value);
1.917 + return;
1.918 + }
1.919 + }
1.920 + write_pair_regular(bci_delta, line_delta);
1.921 + }
1.922 +
1.923 +// Windows AMD64 + Apr 2005 PSDK with /O2 generates bad code for write_pair.
1.924 +// Disabling optimization doesn't work for methods in header files
1.925 +// so we force it to call through the non-optimized version in the .cpp.
1.926 +// It's gross, but it's the only way we can ensure that all callers are
1.927 +// fixed. _MSC_VER is defined by the windows compiler
1.928 +#if defined(_M_AMD64) && _MSC_VER >= 1400
1.929 + void write_pair(int bci, int line);
1.930 +#else
1.931 + void write_pair(int bci, int line) { write_pair_inline(bci, line); }
1.932 +#endif
1.933 +
1.934 + // Write end-of-stream marker
1.935 + void write_terminator() { write_byte(0); }
1.936 +};
1.937 +
1.938 +
1.939 +// Utility class for decompressing line number tables
1.940 +
1.941 +class CompressedLineNumberReadStream: public CompressedReadStream {
1.942 + private:
1.943 + int _bci;
1.944 + int _line;
1.945 + public:
1.946 + // Constructor
1.947 + CompressedLineNumberReadStream(u_char* buffer);
1.948 + // Read (bci, line number) pair from stream. Returns false at end-of-stream.
1.949 + bool read_pair();
1.950 + // Accessing bci and line number (after calling read_pair)
1.951 + int bci() const { return _bci; }
1.952 + int line() const { return _line; }
1.953 +};
1.954 +
1.955 +
1.956 +/// Fast Breakpoints.
1.957 +
1.958 +// If this structure gets more complicated (because bpts get numerous),
1.959 +// move it into its own header.
1.960 +
1.961 +// There is presently no provision for concurrent access
1.962 +// to breakpoint lists, which is only OK for JVMTI because
1.963 +// breakpoints are written only at safepoints, and are read
1.964 +// concurrently only outside of safepoints.
1.965 +
1.966 +class BreakpointInfo : public CHeapObj<mtClass> {
1.967 + friend class VMStructs;
1.968 + private:
1.969 + Bytecodes::Code _orig_bytecode;
1.970 + int _bci;
1.971 + u2 _name_index; // of method
1.972 + u2 _signature_index; // of method
1.973 + BreakpointInfo* _next; // simple storage allocation
1.974 +
1.975 + public:
1.976 + BreakpointInfo(Method* m, int bci);
1.977 +
1.978 + // accessors
1.979 + Bytecodes::Code orig_bytecode() { return _orig_bytecode; }
1.980 + void set_orig_bytecode(Bytecodes::Code code) { _orig_bytecode = code; }
1.981 + int bci() { return _bci; }
1.982 +
1.983 + BreakpointInfo* next() const { return _next; }
1.984 + void set_next(BreakpointInfo* n) { _next = n; }
1.985 +
1.986 + // helps for searchers
1.987 + bool match(const Method* m, int bci) {
1.988 + return bci == _bci && match(m);
1.989 + }
1.990 +
1.991 + bool match(const Method* m) {
1.992 + return _name_index == m->name_index() &&
1.993 + _signature_index == m->signature_index();
1.994 + }
1.995 +
1.996 + void set(Method* method);
1.997 + void clear(Method* method);
1.998 +};
1.999 +
1.1000 +// Utility class for access exception handlers
1.1001 +class ExceptionTable : public StackObj {
1.1002 + private:
1.1003 + ExceptionTableElement* _table;
1.1004 + u2 _length;
1.1005 +
1.1006 + public:
1.1007 + ExceptionTable(const Method* m) {
1.1008 + if (m->has_exception_handler()) {
1.1009 + _table = m->exception_table_start();
1.1010 + _length = m->exception_table_length();
1.1011 + } else {
1.1012 + _table = NULL;
1.1013 + _length = 0;
1.1014 + }
1.1015 + }
1.1016 +
1.1017 + int length() const {
1.1018 + return _length;
1.1019 + }
1.1020 +
1.1021 + u2 start_pc(int idx) const {
1.1022 + assert(idx < _length, "out of bounds");
1.1023 + return _table[idx].start_pc;
1.1024 + }
1.1025 +
1.1026 + void set_start_pc(int idx, u2 value) {
1.1027 + assert(idx < _length, "out of bounds");
1.1028 + _table[idx].start_pc = value;
1.1029 + }
1.1030 +
1.1031 + u2 end_pc(int idx) const {
1.1032 + assert(idx < _length, "out of bounds");
1.1033 + return _table[idx].end_pc;
1.1034 + }
1.1035 +
1.1036 + void set_end_pc(int idx, u2 value) {
1.1037 + assert(idx < _length, "out of bounds");
1.1038 + _table[idx].end_pc = value;
1.1039 + }
1.1040 +
1.1041 + u2 handler_pc(int idx) const {
1.1042 + assert(idx < _length, "out of bounds");
1.1043 + return _table[idx].handler_pc;
1.1044 + }
1.1045 +
1.1046 + void set_handler_pc(int idx, u2 value) {
1.1047 + assert(idx < _length, "out of bounds");
1.1048 + _table[idx].handler_pc = value;
1.1049 + }
1.1050 +
1.1051 + u2 catch_type_index(int idx) const {
1.1052 + assert(idx < _length, "out of bounds");
1.1053 + return _table[idx].catch_type_index;
1.1054 + }
1.1055 +
1.1056 + void set_catch_type_index(int idx, u2 value) {
1.1057 + assert(idx < _length, "out of bounds");
1.1058 + _table[idx].catch_type_index = value;
1.1059 + }
1.1060 +};
1.1061 +
1.1062 +#endif // SHARE_VM_OOPS_METHODOOP_HPP
