Mon, 27 Jun 2016 16:08:34 +0800
[Code Reorganization] Removed compilation policy related modifications made by Loongson.
aoqi@0 | 1 | /* |
aoqi@0 | 2 | * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved. |
aoqi@0 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
aoqi@0 | 4 | * |
aoqi@0 | 5 | * This code is free software; you can redistribute it and/or modify it |
aoqi@0 | 6 | * under the terms of the GNU General Public License version 2 only, as |
aoqi@0 | 7 | * published by the Free Software Foundation. |
aoqi@0 | 8 | * |
aoqi@0 | 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
aoqi@0 | 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
aoqi@0 | 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
aoqi@0 | 12 | * version 2 for more details (a copy is included in the LICENSE file that |
aoqi@0 | 13 | * accompanied this code). |
aoqi@0 | 14 | * |
aoqi@0 | 15 | * You should have received a copy of the GNU General Public License version |
aoqi@0 | 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
aoqi@0 | 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
aoqi@0 | 18 | * |
aoqi@0 | 19 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
aoqi@0 | 20 | * or visit www.oracle.com if you need additional information or have any |
aoqi@0 | 21 | * questions. |
aoqi@0 | 22 | * |
aoqi@0 | 23 | */ |
aoqi@0 | 24 | |
aoqi@0 | 25 | #ifndef SHARE_VM_OOPS_METHODOOP_HPP |
aoqi@0 | 26 | #define SHARE_VM_OOPS_METHODOOP_HPP |
aoqi@0 | 27 | |
aoqi@0 | 28 | #include "classfile/vmSymbols.hpp" |
aoqi@0 | 29 | #include "code/compressedStream.hpp" |
aoqi@0 | 30 | #include "compiler/oopMap.hpp" |
aoqi@0 | 31 | #include "interpreter/invocationCounter.hpp" |
aoqi@0 | 32 | #include "oops/annotations.hpp" |
aoqi@0 | 33 | #include "oops/constantPool.hpp" |
aoqi@0 | 34 | #include "oops/methodCounters.hpp" |
aoqi@0 | 35 | #include "oops/instanceKlass.hpp" |
aoqi@0 | 36 | #include "oops/oop.hpp" |
aoqi@0 | 37 | #include "oops/typeArrayOop.hpp" |
aoqi@0 | 38 | #include "utilities/accessFlags.hpp" |
aoqi@0 | 39 | #include "utilities/growableArray.hpp" |
aoqi@0 | 40 | |
aoqi@0 | 41 | // A Method* represents a Java method. |
aoqi@0 | 42 | // |
aoqi@0 | 43 | // Memory layout (each line represents a word). Note that most applications load thousands of methods, |
aoqi@0 | 44 | // so keeping the size of this structure small has a big impact on footprint. |
aoqi@0 | 45 | // |
aoqi@0 | 46 | // We put all oops and method_size first for better gc cache locality. |
aoqi@0 | 47 | // |
aoqi@0 | 48 | // The actual bytecodes are inlined after the end of the Method struct. |
aoqi@0 | 49 | // |
aoqi@0 | 50 | // There are bits in the access_flags telling whether inlined tables are present. |
aoqi@0 | 51 | // Note that accessing the line number and local variable tables is not performance critical at all. |
aoqi@0 | 52 | // Accessing the checked exceptions table is used by reflection, so we put that last to make access |
aoqi@0 | 53 | // to it fast. |
aoqi@0 | 54 | // |
aoqi@0 | 55 | // The line number table is compressed and inlined following the byte codes. It is found as the first |
aoqi@0 | 56 | // byte following the byte codes. The checked exceptions table and the local variable table are inlined |
aoqi@0 | 57 | // after the line number table, and indexed from the end of the method. We do not compress the checked |
aoqi@0 | 58 | // exceptions table since the average length is less than 2, and do not bother to compress the local |
aoqi@0 | 59 | // variable table either since it is mostly absent. |
aoqi@0 | 60 | // |
aoqi@0 | 61 | // Note that native_function and signature_handler has to be at fixed offsets (required by the interpreter) |
aoqi@0 | 62 | // |
aoqi@0 | 63 | // |------------------------------------------------------| |
aoqi@0 | 64 | // | header | |
aoqi@0 | 65 | // | klass | |
aoqi@0 | 66 | // |------------------------------------------------------| |
aoqi@0 | 67 | // | ConstMethod* (oop) | |
aoqi@0 | 68 | // |------------------------------------------------------| |
aoqi@0 | 69 | // | methodData (oop) | |
aoqi@0 | 70 | // | methodCounters | |
aoqi@0 | 71 | // |------------------------------------------------------| |
aoqi@0 | 72 | // | access_flags | |
aoqi@0 | 73 | // | vtable_index | |
aoqi@0 | 74 | // |------------------------------------------------------| |
aoqi@0 | 75 | // | result_index (C++ interpreter only) | |
aoqi@0 | 76 | // |------------------------------------------------------| |
aoqi@0 | 77 | // | method_size | intrinsic_id| flags | |
aoqi@0 | 78 | // |------------------------------------------------------| |
aoqi@0 | 79 | // | code (pointer) | |
aoqi@0 | 80 | // | i2i (pointer) | |
aoqi@0 | 81 | // | adapter (pointer) | |
aoqi@0 | 82 | // | from_compiled_entry (pointer) | |
aoqi@0 | 83 | // | from_interpreted_entry (pointer) | |
aoqi@0 | 84 | // |------------------------------------------------------| |
aoqi@0 | 85 | // | native_function (present only if native) | |
aoqi@0 | 86 | // | signature_handler (present only if native) | |
aoqi@0 | 87 | // |------------------------------------------------------| |
aoqi@0 | 88 | |
aoqi@0 | 89 | |
aoqi@0 | 90 | class CheckedExceptionElement; |
aoqi@0 | 91 | class LocalVariableTableElement; |
aoqi@0 | 92 | class AdapterHandlerEntry; |
aoqi@0 | 93 | class MethodData; |
aoqi@0 | 94 | class MethodCounters; |
aoqi@0 | 95 | class ConstMethod; |
aoqi@0 | 96 | class InlineTableSizes; |
aoqi@0 | 97 | class KlassSizeStats; |
aoqi@0 | 98 | |
aoqi@0 | 99 | class Method : public Metadata { |
aoqi@0 | 100 | friend class VMStructs; |
aoqi@0 | 101 | private: |
aoqi@0 | 102 | ConstMethod* _constMethod; // Method read-only data. |
aoqi@0 | 103 | MethodData* _method_data; |
aoqi@0 | 104 | MethodCounters* _method_counters; |
aoqi@0 | 105 | AccessFlags _access_flags; // Access flags |
aoqi@0 | 106 | int _vtable_index; // vtable index of this method (see VtableIndexFlag) |
aoqi@0 | 107 | // note: can have vtables with >2**16 elements (because of inheritance) |
aoqi@0 | 108 | #ifdef CC_INTERP |
aoqi@0 | 109 | int _result_index; // C++ interpreter needs for converting results to/from stack |
aoqi@0 | 110 | #endif |
aoqi@0 | 111 | u2 _method_size; // size of this object |
aoqi@0 | 112 | u1 _intrinsic_id; // vmSymbols::intrinsic_id (0 == _none) |
aoqi@0 | 113 | u1 _jfr_towrite : 1, // Flags |
aoqi@0 | 114 | _caller_sensitive : 1, |
aoqi@0 | 115 | _force_inline : 1, |
aoqi@0 | 116 | _hidden : 1, |
aoqi@0 | 117 | _dont_inline : 1, |
aoqi@0 | 118 | : 3; |
aoqi@0 | 119 | |
aoqi@0 | 120 | #ifndef PRODUCT |
aoqi@0 | 121 | int _compiled_invocation_count; // Number of nmethod invocations so far (for perf. debugging) |
aoqi@0 | 122 | #endif |
aoqi@0 | 123 | // Entry point for calling both from and to the interpreter. |
aoqi@0 | 124 | address _i2i_entry; // All-args-on-stack calling convention |
aoqi@0 | 125 | // Adapter blob (i2c/c2i) for this Method*. Set once when method is linked. |
aoqi@0 | 126 | AdapterHandlerEntry* _adapter; |
aoqi@0 | 127 | // Entry point for calling from compiled code, to compiled code if it exists |
aoqi@0 | 128 | // or else the interpreter. |
aoqi@0 | 129 | volatile address _from_compiled_entry; // Cache of: _code ? _code->entry_point() : _adapter->c2i_entry() |
aoqi@0 | 130 | // The entry point for calling both from and to compiled code is |
aoqi@0 | 131 | // "_code->entry_point()". Because of tiered compilation and de-opt, this |
aoqi@0 | 132 | // field can come and go. It can transition from NULL to not-null at any |
aoqi@0 | 133 | // time (whenever a compile completes). It can transition from not-null to |
aoqi@0 | 134 | // NULL only at safepoints (because of a de-opt). |
aoqi@0 | 135 | nmethod* volatile _code; // Points to the corresponding piece of native code |
aoqi@0 | 136 | volatile address _from_interpreted_entry; // Cache of _code ? _adapter->i2c_entry() : _i2i_entry |
aoqi@0 | 137 | |
aoqi@0 | 138 | // Constructor |
aoqi@0 | 139 | Method(ConstMethod* xconst, AccessFlags access_flags, int size); |
aoqi@0 | 140 | public: |
aoqi@0 | 141 | |
aoqi@0 | 142 | static Method* allocate(ClassLoaderData* loader_data, |
aoqi@0 | 143 | int byte_code_size, |
aoqi@0 | 144 | AccessFlags access_flags, |
aoqi@0 | 145 | InlineTableSizes* sizes, |
aoqi@0 | 146 | ConstMethod::MethodType method_type, |
aoqi@0 | 147 | TRAPS); |
aoqi@0 | 148 | |
aoqi@0 | 149 | // CDS and vtbl checking can create an empty Method to get vtbl pointer. |
aoqi@0 | 150 | Method(){} |
aoqi@0 | 151 | |
aoqi@0 | 152 | // The Method vtable is restored by this call when the Method is in the |
aoqi@0 | 153 | // shared archive. See patch_klass_vtables() in metaspaceShared.cpp for |
aoqi@0 | 154 | // all the gory details. SA, dtrace and pstack helpers distinguish metadata |
aoqi@0 | 155 | // by their vtable. |
aoqi@0 | 156 | void restore_vtable() { guarantee(is_method(), "vtable restored by this call"); } |
aoqi@0 | 157 | bool is_method() const volatile { return true; } |
aoqi@0 | 158 | |
aoqi@0 | 159 | void restore_unshareable_info(TRAPS); |
aoqi@0 | 160 | |
aoqi@0 | 161 | // accessors for instance variables |
aoqi@0 | 162 | |
aoqi@0 | 163 | ConstMethod* constMethod() const { return _constMethod; } |
aoqi@0 | 164 | void set_constMethod(ConstMethod* xconst) { _constMethod = xconst; } |
aoqi@0 | 165 | |
aoqi@0 | 166 | |
aoqi@0 | 167 | static address make_adapters(methodHandle mh, TRAPS); |
aoqi@0 | 168 | volatile address from_compiled_entry() const { return (address)OrderAccess::load_ptr_acquire(&_from_compiled_entry); } |
aoqi@0 | 169 | volatile address from_interpreted_entry() const{ return (address)OrderAccess::load_ptr_acquire(&_from_interpreted_entry); } |
aoqi@0 | 170 | |
aoqi@0 | 171 | // access flag |
aoqi@0 | 172 | AccessFlags access_flags() const { return _access_flags; } |
aoqi@0 | 173 | void set_access_flags(AccessFlags flags) { _access_flags = flags; } |
aoqi@0 | 174 | |
aoqi@0 | 175 | // name |
aoqi@0 | 176 | Symbol* name() const { return constants()->symbol_at(name_index()); } |
aoqi@0 | 177 | int name_index() const { return constMethod()->name_index(); } |
aoqi@0 | 178 | void set_name_index(int index) { constMethod()->set_name_index(index); } |
aoqi@0 | 179 | |
aoqi@0 | 180 | // signature |
aoqi@0 | 181 | Symbol* signature() const { return constants()->symbol_at(signature_index()); } |
aoqi@0 | 182 | int signature_index() const { return constMethod()->signature_index(); } |
aoqi@0 | 183 | void set_signature_index(int index) { constMethod()->set_signature_index(index); } |
aoqi@0 | 184 | |
aoqi@0 | 185 | // generics support |
aoqi@0 | 186 | Symbol* generic_signature() const { int idx = generic_signature_index(); return ((idx != 0) ? constants()->symbol_at(idx) : (Symbol*)NULL); } |
aoqi@0 | 187 | int generic_signature_index() const { return constMethod()->generic_signature_index(); } |
aoqi@0 | 188 | void set_generic_signature_index(int index) { constMethod()->set_generic_signature_index(index); } |
aoqi@0 | 189 | |
aoqi@0 | 190 | // annotations support |
aoqi@0 | 191 | AnnotationArray* annotations() const { |
aoqi@0 | 192 | return constMethod()->method_annotations(); |
aoqi@0 | 193 | } |
aoqi@0 | 194 | AnnotationArray* parameter_annotations() const { |
aoqi@0 | 195 | return constMethod()->parameter_annotations(); |
aoqi@0 | 196 | } |
aoqi@0 | 197 | AnnotationArray* annotation_default() const { |
aoqi@0 | 198 | return constMethod()->default_annotations(); |
aoqi@0 | 199 | } |
aoqi@0 | 200 | AnnotationArray* type_annotations() const { |
aoqi@0 | 201 | return constMethod()->type_annotations(); |
aoqi@0 | 202 | } |
aoqi@0 | 203 | |
aoqi@0 | 204 | #ifdef CC_INTERP |
aoqi@0 | 205 | void set_result_index(BasicType type); |
aoqi@0 | 206 | int result_index() { return _result_index; } |
aoqi@0 | 207 | #endif |
aoqi@0 | 208 | |
aoqi@0 | 209 | // Helper routine: get klass name + "." + method name + signature as |
aoqi@0 | 210 | // C string, for the purpose of providing more useful NoSuchMethodErrors |
aoqi@0 | 211 | // and fatal error handling. The string is allocated in resource |
aoqi@0 | 212 | // area if a buffer is not provided by the caller. |
aoqi@0 | 213 | char* name_and_sig_as_C_string() const; |
aoqi@0 | 214 | char* name_and_sig_as_C_string(char* buf, int size) const; |
aoqi@0 | 215 | |
aoqi@0 | 216 | // Static routine in the situations we don't have a Method* |
aoqi@0 | 217 | static char* name_and_sig_as_C_string(Klass* klass, Symbol* method_name, Symbol* signature); |
aoqi@0 | 218 | static char* name_and_sig_as_C_string(Klass* klass, Symbol* method_name, Symbol* signature, char* buf, int size); |
aoqi@0 | 219 | |
aoqi@0 | 220 | Bytecodes::Code java_code_at(int bci) const { |
aoqi@0 | 221 | return Bytecodes::java_code_at(this, bcp_from(bci)); |
aoqi@0 | 222 | } |
aoqi@0 | 223 | Bytecodes::Code code_at(int bci) const { |
aoqi@0 | 224 | return Bytecodes::code_at(this, bcp_from(bci)); |
aoqi@0 | 225 | } |
aoqi@0 | 226 | |
aoqi@0 | 227 | // JVMTI breakpoints |
aoqi@0 | 228 | Bytecodes::Code orig_bytecode_at(int bci) const; |
aoqi@0 | 229 | void set_orig_bytecode_at(int bci, Bytecodes::Code code); |
aoqi@0 | 230 | void set_breakpoint(int bci); |
aoqi@0 | 231 | void clear_breakpoint(int bci); |
aoqi@0 | 232 | void clear_all_breakpoints(); |
aoqi@0 | 233 | // Tracking number of breakpoints, for fullspeed debugging. |
aoqi@0 | 234 | // Only mutated by VM thread. |
aoqi@0 | 235 | u2 number_of_breakpoints() const { |
aoqi@0 | 236 | if (method_counters() == NULL) { |
aoqi@0 | 237 | return 0; |
aoqi@0 | 238 | } else { |
aoqi@0 | 239 | return method_counters()->number_of_breakpoints(); |
aoqi@0 | 240 | } |
aoqi@0 | 241 | } |
aoqi@0 | 242 | void incr_number_of_breakpoints(TRAPS) { |
aoqi@0 | 243 | MethodCounters* mcs = get_method_counters(CHECK); |
aoqi@0 | 244 | if (mcs != NULL) { |
aoqi@0 | 245 | mcs->incr_number_of_breakpoints(); |
aoqi@0 | 246 | } |
aoqi@0 | 247 | } |
aoqi@0 | 248 | void decr_number_of_breakpoints(TRAPS) { |
aoqi@0 | 249 | MethodCounters* mcs = get_method_counters(CHECK); |
aoqi@0 | 250 | if (mcs != NULL) { |
aoqi@0 | 251 | mcs->decr_number_of_breakpoints(); |
aoqi@0 | 252 | } |
aoqi@0 | 253 | } |
aoqi@0 | 254 | // Initialization only |
aoqi@0 | 255 | void clear_number_of_breakpoints() { |
aoqi@0 | 256 | if (method_counters() != NULL) { |
aoqi@0 | 257 | method_counters()->clear_number_of_breakpoints(); |
aoqi@0 | 258 | } |
aoqi@0 | 259 | } |
aoqi@0 | 260 | |
aoqi@0 | 261 | // index into InstanceKlass methods() array |
aoqi@0 | 262 | // note: also used by jfr |
aoqi@0 | 263 | u2 method_idnum() const { return constMethod()->method_idnum(); } |
aoqi@0 | 264 | void set_method_idnum(u2 idnum) { constMethod()->set_method_idnum(idnum); } |
aoqi@0 | 265 | |
aoqi@0 | 266 | // code size |
aoqi@0 | 267 | int code_size() const { return constMethod()->code_size(); } |
aoqi@0 | 268 | |
aoqi@0 | 269 | // method size |
aoqi@0 | 270 | int method_size() const { return _method_size; } |
aoqi@0 | 271 | void set_method_size(int size) { |
aoqi@0 | 272 | assert(0 <= size && size < (1 << 16), "invalid method size"); |
aoqi@0 | 273 | _method_size = size; |
aoqi@0 | 274 | } |
aoqi@0 | 275 | |
aoqi@0 | 276 | // constant pool for Klass* holding this method |
aoqi@0 | 277 | ConstantPool* constants() const { return constMethod()->constants(); } |
aoqi@0 | 278 | void set_constants(ConstantPool* c) { constMethod()->set_constants(c); } |
aoqi@0 | 279 | |
aoqi@0 | 280 | // max stack |
aoqi@0 | 281 | // return original max stack size for method verification |
aoqi@0 | 282 | int verifier_max_stack() const { return constMethod()->max_stack(); } |
aoqi@0 | 283 | int max_stack() const { return constMethod()->max_stack() + extra_stack_entries(); } |
aoqi@0 | 284 | void set_max_stack(int size) { constMethod()->set_max_stack(size); } |
aoqi@0 | 285 | |
aoqi@0 | 286 | // max locals |
aoqi@0 | 287 | int max_locals() const { return constMethod()->max_locals(); } |
aoqi@0 | 288 | void set_max_locals(int size) { constMethod()->set_max_locals(size); } |
aoqi@0 | 289 | |
aoqi@0 | 290 | int highest_comp_level() const; |
aoqi@0 | 291 | void set_highest_comp_level(int level); |
aoqi@0 | 292 | int highest_osr_comp_level() const; |
aoqi@0 | 293 | void set_highest_osr_comp_level(int level); |
aoqi@0 | 294 | |
aoqi@0 | 295 | // Count of times method was exited via exception while interpreting |
aoqi@0 | 296 | void interpreter_throwout_increment(TRAPS) { |
aoqi@0 | 297 | MethodCounters* mcs = get_method_counters(CHECK); |
aoqi@0 | 298 | if (mcs != NULL) { |
aoqi@0 | 299 | mcs->interpreter_throwout_increment(); |
aoqi@0 | 300 | } |
aoqi@0 | 301 | } |
aoqi@0 | 302 | |
aoqi@0 | 303 | int interpreter_throwout_count() const { |
aoqi@0 | 304 | if (method_counters() == NULL) { |
aoqi@0 | 305 | return 0; |
aoqi@0 | 306 | } else { |
aoqi@0 | 307 | return method_counters()->interpreter_throwout_count(); |
aoqi@0 | 308 | } |
aoqi@0 | 309 | } |
aoqi@0 | 310 | |
aoqi@0 | 311 | // size of parameters |
aoqi@0 | 312 | int size_of_parameters() const { return constMethod()->size_of_parameters(); } |
aoqi@0 | 313 | void set_size_of_parameters(int size) { constMethod()->set_size_of_parameters(size); } |
aoqi@0 | 314 | |
aoqi@0 | 315 | bool has_stackmap_table() const { |
aoqi@0 | 316 | return constMethod()->has_stackmap_table(); |
aoqi@0 | 317 | } |
aoqi@0 | 318 | |
aoqi@0 | 319 | Array<u1>* stackmap_data() const { |
aoqi@0 | 320 | return constMethod()->stackmap_data(); |
aoqi@0 | 321 | } |
aoqi@0 | 322 | |
aoqi@0 | 323 | void set_stackmap_data(Array<u1>* sd) { |
aoqi@0 | 324 | constMethod()->set_stackmap_data(sd); |
aoqi@0 | 325 | } |
aoqi@0 | 326 | |
aoqi@0 | 327 | // exception handler table |
aoqi@0 | 328 | bool has_exception_handler() const |
aoqi@0 | 329 | { return constMethod()->has_exception_handler(); } |
aoqi@0 | 330 | int exception_table_length() const |
aoqi@0 | 331 | { return constMethod()->exception_table_length(); } |
aoqi@0 | 332 | ExceptionTableElement* exception_table_start() const |
aoqi@0 | 333 | { return constMethod()->exception_table_start(); } |
aoqi@0 | 334 | |
aoqi@0 | 335 | // Finds the first entry point bci of an exception handler for an |
aoqi@0 | 336 | // exception of klass ex_klass thrown at throw_bci. A value of NULL |
aoqi@0 | 337 | // for ex_klass indicates that the exception klass is not known; in |
aoqi@0 | 338 | // this case it matches any constraint class. Returns -1 if the |
aoqi@0 | 339 | // exception cannot be handled in this method. The handler |
aoqi@0 | 340 | // constraint classes are loaded if necessary. Note that this may |
aoqi@0 | 341 | // throw an exception if loading of the constraint classes causes |
aoqi@0 | 342 | // an IllegalAccessError (bugid 4307310) or an OutOfMemoryError. |
aoqi@0 | 343 | // If an exception is thrown, returns the bci of the |
aoqi@0 | 344 | // exception handler which caused the exception to be thrown, which |
aoqi@0 | 345 | // is needed for proper retries. See, for example, |
aoqi@0 | 346 | // InterpreterRuntime::exception_handler_for_exception. |
aoqi@0 | 347 | static int fast_exception_handler_bci_for(methodHandle mh, KlassHandle ex_klass, int throw_bci, TRAPS); |
aoqi@0 | 348 | |
aoqi@0 | 349 | // method data access |
aoqi@0 | 350 | MethodData* method_data() const { |
aoqi@0 | 351 | return _method_data; |
aoqi@0 | 352 | } |
aoqi@0 | 353 | |
aoqi@0 | 354 | void set_method_data(MethodData* data) { |
aoqi@0 | 355 | // The store into method must be released. On platforms without |
aoqi@0 | 356 | // total store order (TSO) the reference may become visible before |
aoqi@0 | 357 | // the initialization of data otherwise. |
aoqi@0 | 358 | OrderAccess::release_store_ptr((volatile void *)&_method_data, data); |
aoqi@0 | 359 | } |
aoqi@0 | 360 | |
aoqi@0 | 361 | MethodCounters* method_counters() const { |
aoqi@0 | 362 | return _method_counters; |
aoqi@0 | 363 | } |
aoqi@0 | 364 | |
aoqi@0 | 365 | void set_method_counters(MethodCounters* counters) { |
aoqi@0 | 366 | // The store into method must be released. On platforms without |
aoqi@0 | 367 | // total store order (TSO) the reference may become visible before |
aoqi@0 | 368 | // the initialization of data otherwise. |
aoqi@0 | 369 | OrderAccess::release_store_ptr((volatile void *)&_method_counters, counters); |
aoqi@0 | 370 | } |
aoqi@0 | 371 | |
aoqi@0 | 372 | #ifdef TIERED |
aoqi@0 | 373 | // We are reusing interpreter_invocation_count as a holder for the previous event count! |
aoqi@0 | 374 | // We can do that since interpreter_invocation_count is not used in tiered. |
aoqi@0 | 375 | int prev_event_count() const { |
aoqi@0 | 376 | if (method_counters() == NULL) { |
aoqi@0 | 377 | return 0; |
aoqi@0 | 378 | } else { |
aoqi@0 | 379 | return method_counters()->interpreter_invocation_count(); |
aoqi@0 | 380 | } |
aoqi@0 | 381 | } |
aoqi@0 | 382 | void set_prev_event_count(int count, TRAPS) { |
aoqi@0 | 383 | MethodCounters* mcs = get_method_counters(CHECK); |
aoqi@0 | 384 | if (mcs != NULL) { |
aoqi@0 | 385 | mcs->set_interpreter_invocation_count(count); |
aoqi@0 | 386 | } |
aoqi@0 | 387 | } |
aoqi@0 | 388 | jlong prev_time() const { |
aoqi@0 | 389 | return method_counters() == NULL ? 0 : method_counters()->prev_time(); |
aoqi@0 | 390 | } |
aoqi@0 | 391 | void set_prev_time(jlong time, TRAPS) { |
aoqi@0 | 392 | MethodCounters* mcs = get_method_counters(CHECK); |
aoqi@0 | 393 | if (mcs != NULL) { |
aoqi@0 | 394 | mcs->set_prev_time(time); |
aoqi@0 | 395 | } |
aoqi@0 | 396 | } |
aoqi@0 | 397 | float rate() const { |
aoqi@0 | 398 | return method_counters() == NULL ? 0 : method_counters()->rate(); |
aoqi@0 | 399 | } |
aoqi@0 | 400 | void set_rate(float rate, TRAPS) { |
aoqi@0 | 401 | MethodCounters* mcs = get_method_counters(CHECK); |
aoqi@0 | 402 | if (mcs != NULL) { |
aoqi@0 | 403 | mcs->set_rate(rate); |
aoqi@0 | 404 | } |
aoqi@0 | 405 | } |
aoqi@0 | 406 | #endif |
aoqi@0 | 407 | |
aoqi@0 | 408 | int invocation_count(); |
aoqi@0 | 409 | int backedge_count(); |
aoqi@0 | 410 | |
aoqi@0 | 411 | bool was_executed_more_than(int n); |
aoqi@0 | 412 | bool was_never_executed() { return !was_executed_more_than(0); } |
aoqi@0 | 413 | |
aoqi@0 | 414 | static void build_interpreter_method_data(methodHandle method, TRAPS); |
aoqi@0 | 415 | |
aoqi@0 | 416 | static MethodCounters* build_method_counters(Method* m, TRAPS); |
aoqi@0 | 417 | |
aoqi@0 | 418 | int interpreter_invocation_count() { |
aoqi@0 | 419 | if (TieredCompilation) return invocation_count(); |
aoqi@0 | 420 | else return (method_counters() == NULL) ? 0 : |
aoqi@0 | 421 | method_counters()->interpreter_invocation_count(); |
aoqi@0 | 422 | } |
aoqi@0 | 423 | int increment_interpreter_invocation_count(TRAPS) { |
aoqi@0 | 424 | if (TieredCompilation) ShouldNotReachHere(); |
aoqi@0 | 425 | MethodCounters* mcs = get_method_counters(CHECK_0); |
aoqi@0 | 426 | return (mcs == NULL) ? 0 : mcs->increment_interpreter_invocation_count(); |
aoqi@0 | 427 | } |
aoqi@0 | 428 | |
aoqi@0 | 429 | #ifndef PRODUCT |
aoqi@0 | 430 | int compiled_invocation_count() const { return _compiled_invocation_count; } |
aoqi@0 | 431 | void set_compiled_invocation_count(int count) { _compiled_invocation_count = count; } |
aoqi@0 | 432 | #endif // not PRODUCT |
aoqi@0 | 433 | |
aoqi@0 | 434 | // Clear (non-shared space) pointers which could not be relevant |
aoqi@0 | 435 | // if this (shared) method were mapped into another JVM. |
aoqi@0 | 436 | void remove_unshareable_info(); |
aoqi@0 | 437 | |
aoqi@0 | 438 | // nmethod/verified compiler entry |
aoqi@0 | 439 | address verified_code_entry(); |
aoqi@0 | 440 | bool check_code() const; // Not inline to avoid circular ref |
aoqi@0 | 441 | nmethod* volatile code() const { assert( check_code(), "" ); return (nmethod *)OrderAccess::load_ptr_acquire(&_code); } |
aoqi@0 | 442 | void clear_code(); // Clear out any compiled code |
aoqi@0 | 443 | static void set_code(methodHandle mh, nmethod* code); |
aoqi@0 | 444 | void set_adapter_entry(AdapterHandlerEntry* adapter) { _adapter = adapter; } |
aoqi@0 | 445 | address get_i2c_entry(); |
aoqi@0 | 446 | address get_c2i_entry(); |
aoqi@0 | 447 | address get_c2i_unverified_entry(); |
aoqi@0 | 448 | AdapterHandlerEntry* adapter() { return _adapter; } |
aoqi@0 | 449 | // setup entry points |
aoqi@0 | 450 | void link_method(methodHandle method, TRAPS); |
aoqi@0 | 451 | // clear entry points. Used by sharing code |
aoqi@0 | 452 | void unlink_method(); |
aoqi@0 | 453 | |
aoqi@0 | 454 | // vtable index |
aoqi@0 | 455 | enum VtableIndexFlag { |
aoqi@0 | 456 | // Valid vtable indexes are non-negative (>= 0). |
aoqi@0 | 457 | // These few negative values are used as sentinels. |
aoqi@0 | 458 | itable_index_max = -10, // first itable index, growing downward |
aoqi@0 | 459 | pending_itable_index = -9, // itable index will be assigned |
aoqi@0 | 460 | invalid_vtable_index = -4, // distinct from any valid vtable index |
aoqi@0 | 461 | garbage_vtable_index = -3, // not yet linked; no vtable layout yet |
aoqi@0 | 462 | nonvirtual_vtable_index = -2 // there is no need for vtable dispatch |
aoqi@0 | 463 | // 6330203 Note: Do not use -1, which was overloaded with many meanings. |
aoqi@0 | 464 | }; |
aoqi@0 | 465 | DEBUG_ONLY(bool valid_vtable_index() const { return _vtable_index >= nonvirtual_vtable_index; }) |
aoqi@0 | 466 | bool has_vtable_index() const { return _vtable_index >= 0; } |
aoqi@0 | 467 | int vtable_index() const { return _vtable_index; } |
aoqi@0 | 468 | void set_vtable_index(int index) { _vtable_index = index; } |
aoqi@0 | 469 | DEBUG_ONLY(bool valid_itable_index() const { return _vtable_index <= pending_itable_index; }) |
aoqi@0 | 470 | bool has_itable_index() const { return _vtable_index <= itable_index_max; } |
aoqi@0 | 471 | int itable_index() const { assert(valid_itable_index(), ""); |
aoqi@0 | 472 | return itable_index_max - _vtable_index; } |
aoqi@0 | 473 | void set_itable_index(int index) { _vtable_index = itable_index_max - index; assert(valid_itable_index(), ""); } |
aoqi@0 | 474 | |
aoqi@0 | 475 | // interpreter entry |
aoqi@0 | 476 | address interpreter_entry() const { return _i2i_entry; } |
aoqi@0 | 477 | // Only used when first initialize so we can set _i2i_entry and _from_interpreted_entry |
aoqi@0 | 478 | void set_interpreter_entry(address entry) { _i2i_entry = entry; _from_interpreted_entry = entry; } |
aoqi@0 | 479 | |
aoqi@0 | 480 | // native function (used for native methods only) |
aoqi@0 | 481 | enum { |
aoqi@0 | 482 | native_bind_event_is_interesting = true |
aoqi@0 | 483 | }; |
aoqi@0 | 484 | address native_function() const { return *(native_function_addr()); } |
aoqi@0 | 485 | address critical_native_function(); |
aoqi@0 | 486 | |
aoqi@0 | 487 | // Must specify a real function (not NULL). |
aoqi@0 | 488 | // Use clear_native_function() to unregister. |
aoqi@0 | 489 | void set_native_function(address function, bool post_event_flag); |
aoqi@0 | 490 | bool has_native_function() const; |
aoqi@0 | 491 | void clear_native_function(); |
aoqi@0 | 492 | |
aoqi@0 | 493 | // signature handler (used for native methods only) |
aoqi@0 | 494 | address signature_handler() const { return *(signature_handler_addr()); } |
aoqi@0 | 495 | void set_signature_handler(address handler); |
aoqi@0 | 496 | |
aoqi@0 | 497 | // Interpreter oopmap support |
aoqi@0 | 498 | void mask_for(int bci, InterpreterOopMap* mask); |
aoqi@0 | 499 | |
aoqi@0 | 500 | #ifndef PRODUCT |
aoqi@0 | 501 | // operations on invocation counter |
aoqi@0 | 502 | void print_invocation_count(); |
aoqi@0 | 503 | #endif |
aoqi@0 | 504 | |
aoqi@0 | 505 | // byte codes |
aoqi@0 | 506 | void set_code(address code) { return constMethod()->set_code(code); } |
aoqi@0 | 507 | address code_base() const { return constMethod()->code_base(); } |
aoqi@0 | 508 | bool contains(address bcp) const { return constMethod()->contains(bcp); } |
aoqi@0 | 509 | |
aoqi@0 | 510 | // prints byte codes |
aoqi@0 | 511 | void print_codes() const { print_codes_on(tty); } |
aoqi@0 | 512 | void print_codes_on(outputStream* st) const PRODUCT_RETURN; |
aoqi@0 | 513 | void print_codes_on(int from, int to, outputStream* st) const PRODUCT_RETURN; |
aoqi@0 | 514 | |
aoqi@0 | 515 | // method parameters |
aoqi@0 | 516 | bool has_method_parameters() const |
aoqi@0 | 517 | { return constMethod()->has_method_parameters(); } |
aoqi@0 | 518 | int method_parameters_length() const |
aoqi@0 | 519 | { return constMethod()->method_parameters_length(); } |
aoqi@0 | 520 | MethodParametersElement* method_parameters_start() const |
aoqi@0 | 521 | { return constMethod()->method_parameters_start(); } |
aoqi@0 | 522 | |
aoqi@0 | 523 | // checked exceptions |
aoqi@0 | 524 | int checked_exceptions_length() const |
aoqi@0 | 525 | { return constMethod()->checked_exceptions_length(); } |
aoqi@0 | 526 | CheckedExceptionElement* checked_exceptions_start() const |
aoqi@0 | 527 | { return constMethod()->checked_exceptions_start(); } |
aoqi@0 | 528 | |
aoqi@0 | 529 | // localvariable table |
aoqi@0 | 530 | bool has_localvariable_table() const |
aoqi@0 | 531 | { return constMethod()->has_localvariable_table(); } |
aoqi@0 | 532 | int localvariable_table_length() const |
aoqi@0 | 533 | { return constMethod()->localvariable_table_length(); } |
aoqi@0 | 534 | LocalVariableTableElement* localvariable_table_start() const |
aoqi@0 | 535 | { return constMethod()->localvariable_table_start(); } |
aoqi@0 | 536 | |
aoqi@0 | 537 | bool has_linenumber_table() const |
aoqi@0 | 538 | { return constMethod()->has_linenumber_table(); } |
aoqi@0 | 539 | u_char* compressed_linenumber_table() const |
aoqi@0 | 540 | { return constMethod()->compressed_linenumber_table(); } |
aoqi@0 | 541 | |
aoqi@0 | 542 | // method holder (the Klass* holding this method) |
aoqi@0 | 543 | InstanceKlass* method_holder() const { return constants()->pool_holder(); } |
aoqi@0 | 544 | |
aoqi@0 | 545 | void compute_size_of_parameters(Thread *thread); // word size of parameters (receiver if any + arguments) |
aoqi@0 | 546 | Symbol* klass_name() const; // returns the name of the method holder |
aoqi@0 | 547 | BasicType result_type() const; // type of the method result |
aoqi@0 | 548 | int result_type_index() const; // type index of the method result |
aoqi@0 | 549 | bool is_returning_oop() const { BasicType r = result_type(); return (r == T_OBJECT || r == T_ARRAY); } |
aoqi@0 | 550 | bool is_returning_fp() const { BasicType r = result_type(); return (r == T_FLOAT || r == T_DOUBLE); } |
aoqi@0 | 551 | |
aoqi@0 | 552 | // Checked exceptions thrown by this method (resolved to mirrors) |
aoqi@0 | 553 | objArrayHandle resolved_checked_exceptions(TRAPS) { return resolved_checked_exceptions_impl(this, THREAD); } |
aoqi@0 | 554 | |
aoqi@0 | 555 | // Access flags |
aoqi@0 | 556 | bool is_public() const { return access_flags().is_public(); } |
aoqi@0 | 557 | bool is_private() const { return access_flags().is_private(); } |
aoqi@0 | 558 | bool is_protected() const { return access_flags().is_protected(); } |
aoqi@0 | 559 | bool is_package_private() const { return !is_public() && !is_private() && !is_protected(); } |
aoqi@0 | 560 | bool is_static() const { return access_flags().is_static(); } |
aoqi@0 | 561 | bool is_final() const { return access_flags().is_final(); } |
aoqi@0 | 562 | bool is_synchronized() const { return access_flags().is_synchronized();} |
aoqi@0 | 563 | bool is_native() const { return access_flags().is_native(); } |
aoqi@0 | 564 | bool is_abstract() const { return access_flags().is_abstract(); } |
aoqi@0 | 565 | bool is_strict() const { return access_flags().is_strict(); } |
aoqi@0 | 566 | bool is_synthetic() const { return access_flags().is_synthetic(); } |
aoqi@0 | 567 | |
aoqi@0 | 568 | // returns true if contains only return operation |
aoqi@0 | 569 | bool is_empty_method() const; |
aoqi@0 | 570 | |
aoqi@0 | 571 | // returns true if this is a vanilla constructor |
aoqi@0 | 572 | bool is_vanilla_constructor() const; |
aoqi@0 | 573 | |
aoqi@0 | 574 | // checks method and its method holder |
aoqi@0 | 575 | bool is_final_method() const; |
aoqi@0 | 576 | bool is_final_method(AccessFlags class_access_flags) const; |
aoqi@0 | 577 | bool is_default_method() const; |
aoqi@0 | 578 | |
aoqi@0 | 579 | // true if method needs no dynamic dispatch (final and/or no vtable entry) |
aoqi@0 | 580 | bool can_be_statically_bound() const; |
aoqi@0 | 581 | bool can_be_statically_bound(AccessFlags class_access_flags) const; |
aoqi@0 | 582 | |
aoqi@0 | 583 | // returns true if the method has any backward branches. |
aoqi@0 | 584 | bool has_loops() { |
aoqi@0 | 585 | return access_flags().loops_flag_init() ? access_flags().has_loops() : compute_has_loops_flag(); |
aoqi@0 | 586 | }; |
aoqi@0 | 587 | |
aoqi@0 | 588 | bool compute_has_loops_flag(); |
aoqi@0 | 589 | |
aoqi@0 | 590 | bool has_jsrs() { |
aoqi@0 | 591 | return access_flags().has_jsrs(); |
aoqi@0 | 592 | }; |
aoqi@0 | 593 | void set_has_jsrs() { |
aoqi@0 | 594 | _access_flags.set_has_jsrs(); |
aoqi@0 | 595 | } |
aoqi@0 | 596 | |
aoqi@0 | 597 | // returns true if the method has any monitors. |
aoqi@0 | 598 | bool has_monitors() const { return is_synchronized() || access_flags().has_monitor_bytecodes(); } |
aoqi@0 | 599 | bool has_monitor_bytecodes() const { return access_flags().has_monitor_bytecodes(); } |
aoqi@0 | 600 | |
aoqi@0 | 601 | void set_has_monitor_bytecodes() { _access_flags.set_has_monitor_bytecodes(); } |
aoqi@0 | 602 | |
aoqi@0 | 603 | // monitor matching. This returns a conservative estimate of whether the monitorenter/monitorexit bytecodes |
aoqi@0 | 604 | // propererly nest in the method. It might return false, even though they actually nest properly, since the info. |
aoqi@0 | 605 | // has not been computed yet. |
aoqi@0 | 606 | bool guaranteed_monitor_matching() const { return access_flags().is_monitor_matching(); } |
aoqi@0 | 607 | void set_guaranteed_monitor_matching() { _access_flags.set_monitor_matching(); } |
aoqi@0 | 608 | |
aoqi@0 | 609 | // returns true if the method is an accessor function (setter/getter). |
aoqi@0 | 610 | bool is_accessor() const; |
aoqi@0 | 611 | |
aoqi@0 | 612 | // returns true if the method is an initializer (<init> or <clinit>). |
aoqi@0 | 613 | bool is_initializer() const; |
aoqi@0 | 614 | |
aoqi@0 | 615 | // returns true if the method is static OR if the classfile version < 51 |
aoqi@0 | 616 | bool has_valid_initializer_flags() const; |
aoqi@0 | 617 | |
aoqi@0 | 618 | // returns true if the method name is <clinit> and the method has |
aoqi@0 | 619 | // valid static initializer flags. |
aoqi@0 | 620 | bool is_static_initializer() const; |
aoqi@0 | 621 | |
aoqi@0 | 622 | // compiled code support |
aoqi@0 | 623 | // NOTE: code() is inherently racy as deopt can be clearing code |
aoqi@0 | 624 | // simultaneously. Use with caution. |
aoqi@0 | 625 | bool has_compiled_code() const { return code() != NULL; } |
aoqi@0 | 626 | |
aoqi@0 | 627 | // sizing |
aoqi@0 | 628 | static int header_size() { return sizeof(Method)/HeapWordSize; } |
aoqi@0 | 629 | static int size(bool is_native); |
aoqi@0 | 630 | int size() const { return method_size(); } |
aoqi@0 | 631 | #if INCLUDE_SERVICES |
aoqi@0 | 632 | void collect_statistics(KlassSizeStats *sz) const; |
aoqi@0 | 633 | #endif |
aoqi@0 | 634 | |
aoqi@0 | 635 | // interpreter support |
aoqi@0 | 636 | static ByteSize const_offset() { return byte_offset_of(Method, _constMethod ); } |
aoqi@0 | 637 | static ByteSize access_flags_offset() { return byte_offset_of(Method, _access_flags ); } |
aoqi@0 | 638 | #ifdef CC_INTERP |
aoqi@0 | 639 | static ByteSize result_index_offset() { return byte_offset_of(Method, _result_index ); } |
aoqi@0 | 640 | #endif /* CC_INTERP */ |
aoqi@0 | 641 | static ByteSize from_compiled_offset() { return byte_offset_of(Method, _from_compiled_entry); } |
aoqi@0 | 642 | static ByteSize code_offset() { return byte_offset_of(Method, _code); } |
aoqi@0 | 643 | static ByteSize method_data_offset() { |
aoqi@0 | 644 | return byte_offset_of(Method, _method_data); |
aoqi@0 | 645 | } |
aoqi@0 | 646 | static ByteSize method_counters_offset() { |
aoqi@0 | 647 | return byte_offset_of(Method, _method_counters); |
aoqi@0 | 648 | } |
aoqi@0 | 649 | #ifndef PRODUCT |
aoqi@0 | 650 | static ByteSize compiled_invocation_counter_offset() { return byte_offset_of(Method, _compiled_invocation_count); } |
aoqi@0 | 651 | #endif // not PRODUCT |
aoqi@0 | 652 | static ByteSize native_function_offset() { return in_ByteSize(sizeof(Method)); } |
aoqi@0 | 653 | static ByteSize from_interpreted_offset() { return byte_offset_of(Method, _from_interpreted_entry ); } |
aoqi@0 | 654 | static ByteSize interpreter_entry_offset() { return byte_offset_of(Method, _i2i_entry ); } |
aoqi@0 | 655 | static ByteSize signature_handler_offset() { return in_ByteSize(sizeof(Method) + wordSize); } |
aoqi@0 | 656 | |
aoqi@0 | 657 | // for code generation |
aoqi@0 | 658 | static int method_data_offset_in_bytes() { return offset_of(Method, _method_data); } |
aoqi@0 | 659 | static int intrinsic_id_offset_in_bytes() { return offset_of(Method, _intrinsic_id); } |
aoqi@0 | 660 | static int intrinsic_id_size_in_bytes() { return sizeof(u1); } |
aoqi@0 | 661 | |
aoqi@0 | 662 | // Static methods that are used to implement member methods where an exposed this pointer |
aoqi@0 | 663 | // is needed due to possible GCs |
aoqi@0 | 664 | static objArrayHandle resolved_checked_exceptions_impl(Method* this_oop, TRAPS); |
aoqi@0 | 665 | |
aoqi@0 | 666 | // Returns the byte code index from the byte code pointer |
aoqi@0 | 667 | int bci_from(address bcp) const; |
aoqi@0 | 668 | address bcp_from(int bci) const; |
aoqi@0 | 669 | int validate_bci_from_bcx(intptr_t bcx) const; |
aoqi@0 | 670 | |
aoqi@0 | 671 | // Returns the line number for a bci if debugging information for the method is prowided, |
aoqi@0 | 672 | // -1 is returned otherwise. |
aoqi@0 | 673 | int line_number_from_bci(int bci) const; |
aoqi@0 | 674 | |
aoqi@0 | 675 | // Reflection support |
aoqi@0 | 676 | bool is_overridden_in(Klass* k) const; |
aoqi@0 | 677 | |
aoqi@0 | 678 | // Stack walking support |
aoqi@0 | 679 | bool is_ignored_by_security_stack_walk() const; |
aoqi@0 | 680 | |
aoqi@0 | 681 | // JSR 292 support |
aoqi@0 | 682 | bool is_method_handle_intrinsic() const; // MethodHandles::is_signature_polymorphic_intrinsic(intrinsic_id) |
aoqi@0 | 683 | bool is_compiled_lambda_form() const; // intrinsic_id() == vmIntrinsics::_compiledLambdaForm |
aoqi@0 | 684 | bool has_member_arg() const; // intrinsic_id() == vmIntrinsics::_linkToSpecial, etc. |
aoqi@0 | 685 | static methodHandle make_method_handle_intrinsic(vmIntrinsics::ID iid, // _invokeBasic, _linkToVirtual |
aoqi@0 | 686 | Symbol* signature, //anything at all |
aoqi@0 | 687 | TRAPS); |
aoqi@0 | 688 | static Klass* check_non_bcp_klass(Klass* klass); |
aoqi@0 | 689 | |
aoqi@0 | 690 | // How many extra stack entries for invokedynamic when it's enabled |
aoqi@0 | 691 | static const int extra_stack_entries_for_jsr292 = 1; |
aoqi@0 | 692 | |
aoqi@0 | 693 | // this operates only on invoke methods: |
aoqi@0 | 694 | // presize interpreter frames for extra interpreter stack entries, if needed |
aoqi@0 | 695 | // Account for the extra appendix argument for invokehandle/invokedynamic |
aoqi@0 | 696 | static int extra_stack_entries() { return EnableInvokeDynamic ? extra_stack_entries_for_jsr292 : 0; } |
aoqi@0 | 697 | static int extra_stack_words(); // = extra_stack_entries() * Interpreter::stackElementSize |
aoqi@0 | 698 | |
aoqi@0 | 699 | // RedefineClasses() support: |
aoqi@0 | 700 | bool is_old() const { return access_flags().is_old(); } |
aoqi@0 | 701 | void set_is_old() { _access_flags.set_is_old(); } |
aoqi@0 | 702 | bool is_obsolete() const { return access_flags().is_obsolete(); } |
aoqi@0 | 703 | void set_is_obsolete() { _access_flags.set_is_obsolete(); } |
aoqi@0 | 704 | bool on_stack() const { return access_flags().on_stack(); } |
aoqi@0 | 705 | void set_on_stack(const bool value); |
aoqi@0 | 706 | |
aoqi@0 | 707 | // see the definition in Method*.cpp for the gory details |
aoqi@0 | 708 | bool should_not_be_cached() const; |
aoqi@0 | 709 | |
aoqi@0 | 710 | // JVMTI Native method prefixing support: |
aoqi@0 | 711 | bool is_prefixed_native() const { return access_flags().is_prefixed_native(); } |
aoqi@0 | 712 | void set_is_prefixed_native() { _access_flags.set_is_prefixed_native(); } |
aoqi@0 | 713 | |
aoqi@0 | 714 | // Rewriting support |
aoqi@0 | 715 | static methodHandle clone_with_new_data(methodHandle m, u_char* new_code, int new_code_length, |
aoqi@0 | 716 | u_char* new_compressed_linenumber_table, int new_compressed_linenumber_size, TRAPS); |
aoqi@0 | 717 | |
aoqi@0 | 718 | // jmethodID handling |
aoqi@0 | 719 | // Because the useful life-span of a jmethodID cannot be determined, |
aoqi@0 | 720 | // once created they are never reclaimed. The methods to which they refer, |
aoqi@0 | 721 | // however, can be GC'ed away if the class is unloaded or if the method is |
aoqi@0 | 722 | // made obsolete or deleted -- in these cases, the jmethodID |
aoqi@0 | 723 | // refers to NULL (as is the case for any weak reference). |
aoqi@0 | 724 | static jmethodID make_jmethod_id(ClassLoaderData* loader_data, Method* mh); |
aoqi@0 | 725 | static void destroy_jmethod_id(ClassLoaderData* loader_data, jmethodID mid); |
aoqi@0 | 726 | |
aoqi@0 | 727 | // Use resolve_jmethod_id() in situations where the caller is expected |
aoqi@0 | 728 | // to provide a valid jmethodID; the only sanity checks are in asserts; |
aoqi@0 | 729 | // result guaranteed not to be NULL. |
aoqi@0 | 730 | inline static Method* resolve_jmethod_id(jmethodID mid) { |
aoqi@0 | 731 | assert(mid != NULL, "JNI method id should not be null"); |
aoqi@0 | 732 | return *((Method**)mid); |
aoqi@0 | 733 | } |
aoqi@0 | 734 | |
aoqi@0 | 735 | // Use checked_resolve_jmethod_id() in situations where the caller |
aoqi@0 | 736 | // should provide a valid jmethodID, but might not. NULL is returned |
aoqi@0 | 737 | // when the jmethodID does not refer to a valid method. |
aoqi@0 | 738 | static Method* checked_resolve_jmethod_id(jmethodID mid); |
aoqi@0 | 739 | |
aoqi@0 | 740 | static void change_method_associated_with_jmethod_id(jmethodID old_jmid_ptr, Method* new_method); |
aoqi@0 | 741 | static bool is_method_id(jmethodID mid); |
aoqi@0 | 742 | |
aoqi@0 | 743 | // Clear methods |
aoqi@0 | 744 | static void clear_jmethod_ids(ClassLoaderData* loader_data); |
aoqi@0 | 745 | static void print_jmethod_ids(ClassLoaderData* loader_data, outputStream* out) PRODUCT_RETURN; |
aoqi@0 | 746 | |
aoqi@0 | 747 | // Get this method's jmethodID -- allocate if it doesn't exist |
aoqi@0 | 748 | jmethodID jmethod_id() { methodHandle this_h(this); |
aoqi@0 | 749 | return InstanceKlass::get_jmethod_id(method_holder(), this_h); } |
aoqi@0 | 750 | |
aoqi@0 | 751 | // Lookup the jmethodID for this method. Return NULL if not found. |
aoqi@0 | 752 | // NOTE that this function can be called from a signal handler |
aoqi@0 | 753 | // (see AsyncGetCallTrace support for Forte Analyzer) and this |
aoqi@0 | 754 | // needs to be async-safe. No allocation should be done and |
aoqi@0 | 755 | // so handles are not used to avoid deadlock. |
aoqi@0 | 756 | jmethodID find_jmethod_id_or_null() { return method_holder()->jmethod_id_or_null(this); } |
aoqi@0 | 757 | |
aoqi@0 | 758 | // Support for inlining of intrinsic methods |
aoqi@0 | 759 | vmIntrinsics::ID intrinsic_id() const { return (vmIntrinsics::ID) _intrinsic_id; } |
aoqi@0 | 760 | void set_intrinsic_id(vmIntrinsics::ID id) { _intrinsic_id = (u1) id; } |
aoqi@0 | 761 | |
aoqi@0 | 762 | // Helper routines for intrinsic_id() and vmIntrinsics::method(). |
aoqi@0 | 763 | void init_intrinsic_id(); // updates from _none if a match |
aoqi@0 | 764 | static vmSymbols::SID klass_id_for_intrinsics(Klass* holder); |
aoqi@0 | 765 | |
aoqi@0 | 766 | bool jfr_towrite() { return _jfr_towrite; } |
aoqi@0 | 767 | void set_jfr_towrite(bool x) { _jfr_towrite = x; } |
aoqi@0 | 768 | bool caller_sensitive() { return _caller_sensitive; } |
aoqi@0 | 769 | void set_caller_sensitive(bool x) { _caller_sensitive = x; } |
aoqi@0 | 770 | bool force_inline() { return _force_inline; } |
aoqi@0 | 771 | void set_force_inline(bool x) { _force_inline = x; } |
aoqi@0 | 772 | bool dont_inline() { return _dont_inline; } |
aoqi@0 | 773 | void set_dont_inline(bool x) { _dont_inline = x; } |
aoqi@0 | 774 | bool is_hidden() { return _hidden; } |
aoqi@0 | 775 | void set_hidden(bool x) { _hidden = x; } |
aoqi@0 | 776 | ConstMethod::MethodType method_type() const { |
aoqi@0 | 777 | return _constMethod->method_type(); |
aoqi@0 | 778 | } |
aoqi@0 | 779 | bool is_overpass() const { return method_type() == ConstMethod::OVERPASS; } |
aoqi@0 | 780 | |
aoqi@0 | 781 | // On-stack replacement support |
aoqi@0 | 782 | bool has_osr_nmethod(int level, bool match_level) { |
aoqi@0 | 783 | return method_holder()->lookup_osr_nmethod(this, InvocationEntryBci, level, match_level) != NULL; |
aoqi@0 | 784 | } |
aoqi@0 | 785 | |
aoqi@0 | 786 | nmethod* lookup_osr_nmethod_for(int bci, int level, bool match_level) { |
aoqi@0 | 787 | return method_holder()->lookup_osr_nmethod(this, bci, level, match_level); |
aoqi@0 | 788 | } |
aoqi@0 | 789 | |
aoqi@0 | 790 | // Inline cache support |
aoqi@0 | 791 | void cleanup_inline_caches(); |
aoqi@0 | 792 | |
aoqi@0 | 793 | // Find if klass for method is loaded |
aoqi@0 | 794 | bool is_klass_loaded_by_klass_index(int klass_index) const; |
aoqi@0 | 795 | bool is_klass_loaded(int refinfo_index, bool must_be_resolved = false) const; |
aoqi@0 | 796 | |
aoqi@0 | 797 | // Indicates whether compilation failed earlier for this method, or |
aoqi@0 | 798 | // whether it is not compilable for another reason like having a |
aoqi@0 | 799 | // breakpoint set in it. |
aoqi@0 | 800 | bool is_not_compilable(int comp_level = CompLevel_any) const; |
aoqi@0 | 801 | void set_not_compilable(int comp_level = CompLevel_all, bool report = true, const char* reason = NULL); |
aoqi@0 | 802 | void set_not_compilable_quietly(int comp_level = CompLevel_all) { |
aoqi@0 | 803 | set_not_compilable(comp_level, false); |
aoqi@0 | 804 | } |
aoqi@0 | 805 | bool is_not_osr_compilable(int comp_level = CompLevel_any) const; |
aoqi@0 | 806 | void set_not_osr_compilable(int comp_level = CompLevel_all, bool report = true, const char* reason = NULL); |
aoqi@0 | 807 | void set_not_osr_compilable_quietly(int comp_level = CompLevel_all) { |
aoqi@0 | 808 | set_not_osr_compilable(comp_level, false); |
aoqi@0 | 809 | } |
aoqi@0 | 810 | bool is_always_compilable() const; |
aoqi@0 | 811 | |
aoqi@0 | 812 | private: |
aoqi@0 | 813 | void print_made_not_compilable(int comp_level, bool is_osr, bool report, const char* reason); |
aoqi@0 | 814 | |
aoqi@0 | 815 | public: |
aoqi@0 | 816 | MethodCounters* get_method_counters(TRAPS) { |
aoqi@0 | 817 | if (_method_counters == NULL) { |
aoqi@0 | 818 | build_method_counters(this, CHECK_AND_CLEAR_NULL); |
aoqi@0 | 819 | } |
aoqi@0 | 820 | return _method_counters; |
aoqi@0 | 821 | } |
aoqi@0 | 822 | |
aoqi@0 | 823 | bool is_not_c1_compilable() const { return access_flags().is_not_c1_compilable(); } |
aoqi@0 | 824 | void set_not_c1_compilable() { _access_flags.set_not_c1_compilable(); } |
aoqi@0 | 825 | void clear_not_c1_compilable() { _access_flags.clear_not_c1_compilable(); } |
aoqi@0 | 826 | bool is_not_c2_compilable() const { return access_flags().is_not_c2_compilable(); } |
aoqi@0 | 827 | void set_not_c2_compilable() { _access_flags.set_not_c2_compilable(); } |
aoqi@0 | 828 | void clear_not_c2_compilable() { _access_flags.clear_not_c2_compilable(); } |
aoqi@0 | 829 | |
aoqi@0 | 830 | bool is_not_c1_osr_compilable() const { return is_not_c1_compilable(); } // don't waste an accessFlags bit |
aoqi@0 | 831 | void set_not_c1_osr_compilable() { set_not_c1_compilable(); } // don't waste an accessFlags bit |
aoqi@0 | 832 | void clear_not_c1_osr_compilable() { clear_not_c1_compilable(); } // don't waste an accessFlags bit |
aoqi@0 | 833 | bool is_not_c2_osr_compilable() const { return access_flags().is_not_c2_osr_compilable(); } |
aoqi@0 | 834 | void set_not_c2_osr_compilable() { _access_flags.set_not_c2_osr_compilable(); } |
aoqi@0 | 835 | void clear_not_c2_osr_compilable() { _access_flags.clear_not_c2_osr_compilable(); } |
aoqi@0 | 836 | |
aoqi@0 | 837 | // Background compilation support |
aoqi@0 | 838 | bool queued_for_compilation() const { return access_flags().queued_for_compilation(); } |
aoqi@0 | 839 | void set_queued_for_compilation() { _access_flags.set_queued_for_compilation(); } |
aoqi@0 | 840 | void clear_queued_for_compilation() { _access_flags.clear_queued_for_compilation(); } |
aoqi@0 | 841 | |
aoqi@0 | 842 | // Resolve all classes in signature, return 'true' if successful |
aoqi@0 | 843 | static bool load_signature_classes(methodHandle m, TRAPS); |
aoqi@0 | 844 | |
aoqi@0 | 845 | // Return if true if not all classes references in signature, including return type, has been loaded |
aoqi@0 | 846 | static bool has_unloaded_classes_in_signature(methodHandle m, TRAPS); |
aoqi@0 | 847 | |
aoqi@0 | 848 | // Printing |
aoqi@0 | 849 | void print_short_name(outputStream* st = tty); // prints as klassname::methodname; Exposed so field engineers can debug VM |
aoqi@0 | 850 | #if INCLUDE_JVMTI |
aoqi@0 | 851 | void print_name(outputStream* st = tty); // prints as "virtual void foo(int)"; exposed for TraceRedefineClasses |
aoqi@0 | 852 | #else |
aoqi@0 | 853 | void print_name(outputStream* st = tty) PRODUCT_RETURN; // prints as "virtual void foo(int)" |
aoqi@0 | 854 | #endif |
aoqi@0 | 855 | |
aoqi@0 | 856 | // Helper routine used for method sorting |
aoqi@0 | 857 | static void sort_methods(Array<Method*>* methods, bool idempotent = false, bool set_idnums = true); |
aoqi@0 | 858 | |
aoqi@0 | 859 | // Deallocation function for redefine classes or if an error occurs |
aoqi@0 | 860 | void deallocate_contents(ClassLoaderData* loader_data); |
aoqi@0 | 861 | |
aoqi@0 | 862 | // Printing |
aoqi@0 | 863 | #ifndef PRODUCT |
aoqi@0 | 864 | void print_on(outputStream* st) const; |
aoqi@0 | 865 | #endif |
aoqi@0 | 866 | void print_value_on(outputStream* st) const; |
aoqi@0 | 867 | |
aoqi@0 | 868 | const char* internal_name() const { return "{method}"; } |
aoqi@0 | 869 | |
aoqi@0 | 870 | // Check for valid method pointer |
aoqi@0 | 871 | static bool has_method_vptr(const void* ptr); |
aoqi@0 | 872 | bool is_valid_method() const; |
aoqi@0 | 873 | |
aoqi@0 | 874 | // Verify |
aoqi@0 | 875 | void verify() { verify_on(tty); } |
aoqi@0 | 876 | void verify_on(outputStream* st); |
aoqi@0 | 877 | |
aoqi@0 | 878 | private: |
aoqi@0 | 879 | |
aoqi@0 | 880 | // Inlined elements |
aoqi@0 | 881 | address* native_function_addr() const { assert(is_native(), "must be native"); return (address*) (this+1); } |
aoqi@0 | 882 | address* signature_handler_addr() const { return native_function_addr() + 1; } |
aoqi@0 | 883 | }; |
aoqi@0 | 884 | |
aoqi@0 | 885 | |
aoqi@0 | 886 | // Utility class for compressing line number tables |
aoqi@0 | 887 | |
aoqi@0 | 888 | class CompressedLineNumberWriteStream: public CompressedWriteStream { |
aoqi@0 | 889 | private: |
aoqi@0 | 890 | int _bci; |
aoqi@0 | 891 | int _line; |
aoqi@0 | 892 | public: |
aoqi@0 | 893 | // Constructor |
aoqi@0 | 894 | CompressedLineNumberWriteStream(int initial_size) : CompressedWriteStream(initial_size), _bci(0), _line(0) {} |
aoqi@0 | 895 | CompressedLineNumberWriteStream(u_char* buffer, int initial_size) : CompressedWriteStream(buffer, initial_size), _bci(0), _line(0) {} |
aoqi@0 | 896 | |
aoqi@0 | 897 | // Write (bci, line number) pair to stream |
aoqi@0 | 898 | void write_pair_regular(int bci_delta, int line_delta); |
aoqi@0 | 899 | |
aoqi@0 | 900 | inline void write_pair_inline(int bci, int line) { |
aoqi@0 | 901 | int bci_delta = bci - _bci; |
aoqi@0 | 902 | int line_delta = line - _line; |
aoqi@0 | 903 | _bci = bci; |
aoqi@0 | 904 | _line = line; |
aoqi@0 | 905 | // Skip (0,0) deltas - they do not add information and conflict with terminator. |
aoqi@0 | 906 | if (bci_delta == 0 && line_delta == 0) return; |
aoqi@0 | 907 | // Check if bci is 5-bit and line number 3-bit unsigned. |
aoqi@0 | 908 | if (((bci_delta & ~0x1F) == 0) && ((line_delta & ~0x7) == 0)) { |
aoqi@0 | 909 | // Compress into single byte. |
aoqi@0 | 910 | jubyte value = ((jubyte) bci_delta << 3) | (jubyte) line_delta; |
aoqi@0 | 911 | // Check that value doesn't match escape character. |
aoqi@0 | 912 | if (value != 0xFF) { |
aoqi@0 | 913 | write_byte(value); |
aoqi@0 | 914 | return; |
aoqi@0 | 915 | } |
aoqi@0 | 916 | } |
aoqi@0 | 917 | write_pair_regular(bci_delta, line_delta); |
aoqi@0 | 918 | } |
aoqi@0 | 919 | |
aoqi@0 | 920 | // Windows AMD64 + Apr 2005 PSDK with /O2 generates bad code for write_pair. |
aoqi@0 | 921 | // Disabling optimization doesn't work for methods in header files |
aoqi@0 | 922 | // so we force it to call through the non-optimized version in the .cpp. |
aoqi@0 | 923 | // It's gross, but it's the only way we can ensure that all callers are |
aoqi@0 | 924 | // fixed. _MSC_VER is defined by the windows compiler |
aoqi@0 | 925 | #if defined(_M_AMD64) && _MSC_VER >= 1400 |
aoqi@0 | 926 | void write_pair(int bci, int line); |
aoqi@0 | 927 | #else |
aoqi@0 | 928 | void write_pair(int bci, int line) { write_pair_inline(bci, line); } |
aoqi@0 | 929 | #endif |
aoqi@0 | 930 | |
aoqi@0 | 931 | // Write end-of-stream marker |
aoqi@0 | 932 | void write_terminator() { write_byte(0); } |
aoqi@0 | 933 | }; |
aoqi@0 | 934 | |
aoqi@0 | 935 | |
aoqi@0 | 936 | // Utility class for decompressing line number tables |
aoqi@0 | 937 | |
aoqi@0 | 938 | class CompressedLineNumberReadStream: public CompressedReadStream { |
aoqi@0 | 939 | private: |
aoqi@0 | 940 | int _bci; |
aoqi@0 | 941 | int _line; |
aoqi@0 | 942 | public: |
aoqi@0 | 943 | // Constructor |
aoqi@0 | 944 | CompressedLineNumberReadStream(u_char* buffer); |
aoqi@0 | 945 | // Read (bci, line number) pair from stream. Returns false at end-of-stream. |
aoqi@0 | 946 | bool read_pair(); |
aoqi@0 | 947 | // Accessing bci and line number (after calling read_pair) |
aoqi@0 | 948 | int bci() const { return _bci; } |
aoqi@0 | 949 | int line() const { return _line; } |
aoqi@0 | 950 | }; |
aoqi@0 | 951 | |
aoqi@0 | 952 | |
aoqi@0 | 953 | /// Fast Breakpoints. |
aoqi@0 | 954 | |
aoqi@0 | 955 | // If this structure gets more complicated (because bpts get numerous), |
aoqi@0 | 956 | // move it into its own header. |
aoqi@0 | 957 | |
aoqi@0 | 958 | // There is presently no provision for concurrent access |
aoqi@0 | 959 | // to breakpoint lists, which is only OK for JVMTI because |
aoqi@0 | 960 | // breakpoints are written only at safepoints, and are read |
aoqi@0 | 961 | // concurrently only outside of safepoints. |
aoqi@0 | 962 | |
aoqi@0 | 963 | class BreakpointInfo : public CHeapObj<mtClass> { |
aoqi@0 | 964 | friend class VMStructs; |
aoqi@0 | 965 | private: |
aoqi@0 | 966 | Bytecodes::Code _orig_bytecode; |
aoqi@0 | 967 | int _bci; |
aoqi@0 | 968 | u2 _name_index; // of method |
aoqi@0 | 969 | u2 _signature_index; // of method |
aoqi@0 | 970 | BreakpointInfo* _next; // simple storage allocation |
aoqi@0 | 971 | |
aoqi@0 | 972 | public: |
aoqi@0 | 973 | BreakpointInfo(Method* m, int bci); |
aoqi@0 | 974 | |
aoqi@0 | 975 | // accessors |
aoqi@0 | 976 | Bytecodes::Code orig_bytecode() { return _orig_bytecode; } |
aoqi@0 | 977 | void set_orig_bytecode(Bytecodes::Code code) { _orig_bytecode = code; } |
aoqi@0 | 978 | int bci() { return _bci; } |
aoqi@0 | 979 | |
aoqi@0 | 980 | BreakpointInfo* next() const { return _next; } |
aoqi@0 | 981 | void set_next(BreakpointInfo* n) { _next = n; } |
aoqi@0 | 982 | |
aoqi@0 | 983 | // helps for searchers |
aoqi@0 | 984 | bool match(const Method* m, int bci) { |
aoqi@0 | 985 | return bci == _bci && match(m); |
aoqi@0 | 986 | } |
aoqi@0 | 987 | |
aoqi@0 | 988 | bool match(const Method* m) { |
aoqi@0 | 989 | return _name_index == m->name_index() && |
aoqi@0 | 990 | _signature_index == m->signature_index(); |
aoqi@0 | 991 | } |
aoqi@0 | 992 | |
aoqi@0 | 993 | void set(Method* method); |
aoqi@0 | 994 | void clear(Method* method); |
aoqi@0 | 995 | }; |
aoqi@0 | 996 | |
aoqi@0 | 997 | // Utility class for access exception handlers |
aoqi@0 | 998 | class ExceptionTable : public StackObj { |
aoqi@0 | 999 | private: |
aoqi@0 | 1000 | ExceptionTableElement* _table; |
aoqi@0 | 1001 | u2 _length; |
aoqi@0 | 1002 | |
aoqi@0 | 1003 | public: |
aoqi@0 | 1004 | ExceptionTable(const Method* m) { |
aoqi@0 | 1005 | if (m->has_exception_handler()) { |
aoqi@0 | 1006 | _table = m->exception_table_start(); |
aoqi@0 | 1007 | _length = m->exception_table_length(); |
aoqi@0 | 1008 | } else { |
aoqi@0 | 1009 | _table = NULL; |
aoqi@0 | 1010 | _length = 0; |
aoqi@0 | 1011 | } |
aoqi@0 | 1012 | } |
aoqi@0 | 1013 | |
aoqi@0 | 1014 | int length() const { |
aoqi@0 | 1015 | return _length; |
aoqi@0 | 1016 | } |
aoqi@0 | 1017 | |
aoqi@0 | 1018 | u2 start_pc(int idx) const { |
aoqi@0 | 1019 | assert(idx < _length, "out of bounds"); |
aoqi@0 | 1020 | return _table[idx].start_pc; |
aoqi@0 | 1021 | } |
aoqi@0 | 1022 | |
aoqi@0 | 1023 | void set_start_pc(int idx, u2 value) { |
aoqi@0 | 1024 | assert(idx < _length, "out of bounds"); |
aoqi@0 | 1025 | _table[idx].start_pc = value; |
aoqi@0 | 1026 | } |
aoqi@0 | 1027 | |
aoqi@0 | 1028 | u2 end_pc(int idx) const { |
aoqi@0 | 1029 | assert(idx < _length, "out of bounds"); |
aoqi@0 | 1030 | return _table[idx].end_pc; |
aoqi@0 | 1031 | } |
aoqi@0 | 1032 | |
aoqi@0 | 1033 | void set_end_pc(int idx, u2 value) { |
aoqi@0 | 1034 | assert(idx < _length, "out of bounds"); |
aoqi@0 | 1035 | _table[idx].end_pc = value; |
aoqi@0 | 1036 | } |
aoqi@0 | 1037 | |
aoqi@0 | 1038 | u2 handler_pc(int idx) const { |
aoqi@0 | 1039 | assert(idx < _length, "out of bounds"); |
aoqi@0 | 1040 | return _table[idx].handler_pc; |
aoqi@0 | 1041 | } |
aoqi@0 | 1042 | |
aoqi@0 | 1043 | void set_handler_pc(int idx, u2 value) { |
aoqi@0 | 1044 | assert(idx < _length, "out of bounds"); |
aoqi@0 | 1045 | _table[idx].handler_pc = value; |
aoqi@0 | 1046 | } |
aoqi@0 | 1047 | |
aoqi@0 | 1048 | u2 catch_type_index(int idx) const { |
aoqi@0 | 1049 | assert(idx < _length, "out of bounds"); |
aoqi@0 | 1050 | return _table[idx].catch_type_index; |
aoqi@0 | 1051 | } |
aoqi@0 | 1052 | |
aoqi@0 | 1053 | void set_catch_type_index(int idx, u2 value) { |
aoqi@0 | 1054 | assert(idx < _length, "out of bounds"); |
aoqi@0 | 1055 | _table[idx].catch_type_index = value; |
aoqi@0 | 1056 | } |
aoqi@0 | 1057 | }; |
aoqi@0 | 1058 | |
aoqi@0 | 1059 | #endif // SHARE_VM_OOPS_METHODOOP_HPP |