Mercurial > hg > truffle
annotate src/share/vm/interpreter/interpreter.cpp @ 2177:3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
Summary: move symbols from permgen into C heap and reference count them
Reviewed-by: never, acorn, jmasa, stefank
| author | coleenp |
|---|---|
| date | Thu, 27 Jan 2011 16:11:27 -0800 |
| parents | 8012aa3ccede |
| children | e1162778c1c8 |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 2142 | 2 * Copyright (c) 1997, 2011, Oracle and/or its affiliates. All rights reserved. |
| 0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 * | |
| 5 * This code is free software; you can redistribute it and/or modify it | |
| 6 * under the terms of the GNU General Public License version 2 only, as | |
| 7 * published by the Free Software Foundation. | |
| 8 * | |
| 9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 12 * version 2 for more details (a copy is included in the LICENSE file that | |
| 13 * accompanied this code). | |
| 14 * | |
| 15 * You should have received a copy of the GNU General Public License version | |
| 16 * 2 along with this work; if not, write to the Free Software Foundation, | |
| 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 18 * | |
|
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 1972 | 25 #include "precompiled.hpp" |
| 26 #include "asm/assembler.hpp" | |
| 27 #include "interpreter/bytecodeHistogram.hpp" | |
| 28 #include "interpreter/bytecodeInterpreter.hpp" | |
| 29 #include "interpreter/interpreter.hpp" | |
| 30 #include "interpreter/interpreterRuntime.hpp" | |
| 31 #include "interpreter/templateTable.hpp" | |
| 32 #include "memory/allocation.inline.hpp" | |
| 33 #include "memory/resourceArea.hpp" | |
| 34 #include "oops/arrayOop.hpp" | |
| 35 #include "oops/methodDataOop.hpp" | |
| 36 #include "oops/methodOop.hpp" | |
| 37 #include "oops/oop.inline.hpp" | |
| 38 #include "prims/forte.hpp" | |
| 39 #include "prims/jvmtiExport.hpp" | |
| 40 #include "runtime/handles.inline.hpp" | |
| 41 #include "runtime/sharedRuntime.hpp" | |
| 42 #include "runtime/stubRoutines.hpp" | |
| 43 #include "runtime/timer.hpp" | |
| 0 | 44 |
| 45 # define __ _masm-> | |
| 46 | |
| 47 | |
| 48 //------------------------------------------------------------------------------------------------------------------------ | |
| 49 // Implementation of InterpreterCodelet | |
| 50 | |
| 51 void InterpreterCodelet::initialize(const char* description, Bytecodes::Code bytecode) { | |
| 52 _description = description; | |
| 53 _bytecode = bytecode; | |
| 54 } | |
| 55 | |
| 56 | |
| 57 void InterpreterCodelet::verify() { | |
| 58 } | |
| 59 | |
| 60 | |
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61 void InterpreterCodelet::print_on(outputStream* st) const { |
| 0 | 62 if (PrintInterpreter) { |
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63 st->cr(); |
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64 st->print_cr("----------------------------------------------------------------------"); |
| 0 | 65 } |
| 66 | |
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67 if (description() != NULL) st->print("%s ", description()); |
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68 if (bytecode() >= 0 ) st->print("%d %s ", bytecode(), Bytecodes::name(bytecode())); |
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69 st->print_cr("[" INTPTR_FORMAT ", " INTPTR_FORMAT "] %d bytes", |
| 0 | 70 code_begin(), code_end(), code_size()); |
| 71 | |
| 72 if (PrintInterpreter) { | |
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73 st->cr(); |
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74 Disassembler::decode(code_begin(), code_end(), st); |
| 0 | 75 } |
| 76 } | |
| 77 | |
| 78 | |
| 79 //------------------------------------------------------------------------------------------------------------------------ | |
| 80 // Implementation of platform independent aspects of Interpreter | |
| 81 | |
| 82 void AbstractInterpreter::initialize() { | |
| 83 if (_code != NULL) return; | |
| 84 | |
| 85 // make sure 'imported' classes are initialized | |
| 86 if (CountBytecodes || TraceBytecodes || StopInterpreterAt) BytecodeCounter::reset(); | |
| 87 if (PrintBytecodeHistogram) BytecodeHistogram::reset(); | |
| 88 if (PrintBytecodePairHistogram) BytecodePairHistogram::reset(); | |
| 89 | |
| 90 InvocationCounter::reinitialize(DelayCompilationDuringStartup); | |
| 91 | |
| 92 } | |
| 93 | |
| 94 void AbstractInterpreter::print() { | |
| 95 tty->cr(); | |
| 96 tty->print_cr("----------------------------------------------------------------------"); | |
| 97 tty->print_cr("Interpreter"); | |
| 98 tty->cr(); | |
| 99 tty->print_cr("code size = %6dK bytes", (int)_code->used_space()/1024); | |
| 100 tty->print_cr("total space = %6dK bytes", (int)_code->total_space()/1024); | |
| 101 tty->print_cr("wasted space = %6dK bytes", (int)_code->available_space()/1024); | |
| 102 tty->cr(); | |
| 103 tty->print_cr("# of codelets = %6d" , _code->number_of_stubs()); | |
| 104 tty->print_cr("avg codelet size = %6d bytes", _code->used_space() / _code->number_of_stubs()); | |
| 105 tty->cr(); | |
| 106 _code->print(); | |
| 107 tty->print_cr("----------------------------------------------------------------------"); | |
| 108 tty->cr(); | |
| 109 } | |
| 110 | |
| 111 | |
| 112 void interpreter_init() { | |
| 113 Interpreter::initialize(); | |
| 114 #ifndef PRODUCT | |
| 115 if (TraceBytecodes) BytecodeTracer::set_closure(BytecodeTracer::std_closure()); | |
| 116 #endif // PRODUCT | |
| 117 // need to hit every safepoint in order to call zapping routine | |
| 118 // register the interpreter | |
| 119 Forte::register_stub( | |
| 120 "Interpreter", | |
| 121 AbstractInterpreter::code()->code_start(), | |
| 122 AbstractInterpreter::code()->code_end() | |
| 123 ); | |
| 124 | |
| 125 // notify JVMTI profiler | |
| 126 if (JvmtiExport::should_post_dynamic_code_generated()) { | |
| 127 JvmtiExport::post_dynamic_code_generated("Interpreter", | |
| 128 AbstractInterpreter::code()->code_start(), | |
| 129 AbstractInterpreter::code()->code_end()); | |
| 130 } | |
| 131 } | |
| 132 | |
| 133 //------------------------------------------------------------------------------------------------------------------------ | |
| 134 // Implementation of interpreter | |
| 135 | |
| 136 StubQueue* AbstractInterpreter::_code = NULL; | |
| 137 bool AbstractInterpreter::_notice_safepoints = false; | |
| 138 address AbstractInterpreter::_rethrow_exception_entry = NULL; | |
| 139 | |
| 140 address AbstractInterpreter::_native_entry_begin = NULL; | |
| 141 address AbstractInterpreter::_native_entry_end = NULL; | |
| 142 address AbstractInterpreter::_slow_signature_handler; | |
| 143 address AbstractInterpreter::_entry_table [AbstractInterpreter::number_of_method_entries]; | |
| 144 address AbstractInterpreter::_native_abi_to_tosca [AbstractInterpreter::number_of_result_handlers]; | |
| 145 | |
| 146 //------------------------------------------------------------------------------------------------------------------------ | |
| 147 // Generation of complete interpreter | |
| 148 | |
| 149 AbstractInterpreterGenerator::AbstractInterpreterGenerator(StubQueue* _code) { | |
| 150 _masm = NULL; | |
| 151 } | |
| 152 | |
| 153 | |
| 154 static const BasicType types[Interpreter::number_of_result_handlers] = { | |
| 155 T_BOOLEAN, | |
| 156 T_CHAR , | |
| 157 T_BYTE , | |
| 158 T_SHORT , | |
| 159 T_INT , | |
| 160 T_LONG , | |
| 161 T_VOID , | |
| 162 T_FLOAT , | |
| 163 T_DOUBLE , | |
| 164 T_OBJECT | |
| 165 }; | |
| 166 | |
| 167 void AbstractInterpreterGenerator::generate_all() { | |
| 168 | |
| 169 | |
| 170 { CodeletMark cm(_masm, "slow signature handler"); | |
| 171 Interpreter::_slow_signature_handler = generate_slow_signature_handler(); | |
| 172 } | |
| 173 | |
| 174 } | |
| 175 | |
| 176 //------------------------------------------------------------------------------------------------------------------------ | |
| 177 // Entry points | |
| 178 | |
| 179 AbstractInterpreter::MethodKind AbstractInterpreter::method_kind(methodHandle m) { | |
| 180 // Abstract method? | |
| 181 if (m->is_abstract()) return abstract; | |
| 182 | |
| 710 | 183 // Invoker for method handles? |
| 184 if (m->is_method_handle_invoke()) return method_handle; | |
| 185 | |
| 0 | 186 // Native method? |
| 187 // Note: This test must come _before_ the test for intrinsic | |
| 188 // methods. See also comments below. | |
| 189 if (m->is_native()) { | |
| 710 | 190 assert(!m->is_method_handle_invoke(), "overlapping bits here, watch out"); |
| 0 | 191 return m->is_synchronized() ? native_synchronized : native; |
| 192 } | |
| 193 | |
| 194 // Synchronized? | |
| 195 if (m->is_synchronized()) { | |
| 196 return zerolocals_synchronized; | |
| 197 } | |
| 198 | |
| 199 if (RegisterFinalizersAtInit && m->code_size() == 1 && | |
| 200 m->intrinsic_id() == vmIntrinsics::_Object_init) { | |
| 201 // We need to execute the special return bytecode to check for | |
| 202 // finalizer registration so create a normal frame. | |
| 203 return zerolocals; | |
| 204 } | |
| 205 | |
| 206 // Empty method? | |
| 207 if (m->is_empty_method()) { | |
| 208 return empty; | |
| 209 } | |
| 210 | |
| 211 // Accessor method? | |
| 212 if (m->is_accessor()) { | |
| 213 assert(m->size_of_parameters() == 1, "fast code for accessors assumes parameter size = 1"); | |
| 214 return accessor; | |
| 215 } | |
| 216 | |
| 217 // Special intrinsic method? | |
| 218 // Note: This test must come _after_ the test for native methods, | |
| 219 // otherwise we will run into problems with JDK 1.2, see also | |
| 220 // AbstractInterpreterGenerator::generate_method_entry() for | |
| 221 // for details. | |
| 222 switch (m->intrinsic_id()) { | |
| 223 case vmIntrinsics::_dsin : return java_lang_math_sin ; | |
| 224 case vmIntrinsics::_dcos : return java_lang_math_cos ; | |
| 225 case vmIntrinsics::_dtan : return java_lang_math_tan ; | |
| 226 case vmIntrinsics::_dabs : return java_lang_math_abs ; | |
| 227 case vmIntrinsics::_dsqrt : return java_lang_math_sqrt ; | |
| 228 case vmIntrinsics::_dlog : return java_lang_math_log ; | |
| 229 case vmIntrinsics::_dlog10: return java_lang_math_log10; | |
| 230 } | |
| 231 | |
| 232 // Note: for now: zero locals for all non-empty methods | |
| 233 return zerolocals; | |
| 234 } | |
| 235 | |
| 236 | |
| 237 // Return true if the interpreter can prove that the given bytecode has | |
| 238 // not yet been executed (in Java semantics, not in actual operation). | |
| 239 bool AbstractInterpreter::is_not_reached(methodHandle method, int bci) { | |
| 2142 | 240 Bytecodes::Code code = method()->code_at(bci); |
| 0 | 241 |
| 2142 | 242 if (!Bytecodes::must_rewrite(code)) { |
| 0 | 243 // might have been reached |
| 244 return false; | |
| 245 } | |
| 246 | |
| 247 // the bytecode might not be rewritten if the method is an accessor, etc. | |
| 248 address ientry = method->interpreter_entry(); | |
| 249 if (ientry != entry_for_kind(AbstractInterpreter::zerolocals) && | |
| 250 ientry != entry_for_kind(AbstractInterpreter::zerolocals_synchronized)) | |
| 251 return false; // interpreter does not run this method! | |
| 252 | |
| 253 // otherwise, we can be sure this bytecode has never been executed | |
| 254 return true; | |
| 255 } | |
| 256 | |
| 257 | |
| 258 #ifndef PRODUCT | |
| 259 void AbstractInterpreter::print_method_kind(MethodKind kind) { | |
| 260 switch (kind) { | |
| 261 case zerolocals : tty->print("zerolocals" ); break; | |
| 262 case zerolocals_synchronized: tty->print("zerolocals_synchronized"); break; | |
| 263 case native : tty->print("native" ); break; | |
| 264 case native_synchronized : tty->print("native_synchronized" ); break; | |
| 265 case empty : tty->print("empty" ); break; | |
| 266 case accessor : tty->print("accessor" ); break; | |
| 267 case abstract : tty->print("abstract" ); break; | |
| 710 | 268 case method_handle : tty->print("method_handle" ); break; |
| 0 | 269 case java_lang_math_sin : tty->print("java_lang_math_sin" ); break; |
| 270 case java_lang_math_cos : tty->print("java_lang_math_cos" ); break; | |
| 271 case java_lang_math_tan : tty->print("java_lang_math_tan" ); break; | |
| 272 case java_lang_math_abs : tty->print("java_lang_math_abs" ); break; | |
| 273 case java_lang_math_sqrt : tty->print("java_lang_math_sqrt" ); break; | |
| 274 case java_lang_math_log : tty->print("java_lang_math_log" ); break; | |
| 275 case java_lang_math_log10 : tty->print("java_lang_math_log10" ); break; | |
| 276 default : ShouldNotReachHere(); | |
| 277 } | |
| 278 } | |
| 279 #endif // PRODUCT | |
| 280 | |
| 281 | |
| 282 //------------------------------------------------------------------------------------------------------------------------ | |
| 283 // Deoptimization support | |
| 284 | |
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285 // If deoptimization happens, this function returns the point of next bytecode to continue execution |
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286 address AbstractInterpreter::deopt_continue_after_entry(methodOop method, address bcp, int callee_parameters, bool is_top_frame) { |
| 0 | 287 assert(method->contains(bcp), "just checkin'"); |
| 2142 | 288 Bytecodes::Code code = Bytecodes::java_code_at(method, bcp); |
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289 assert(!Interpreter::bytecode_should_reexecute(code), "should not reexecute"); |
| 0 | 290 int bci = method->bci_from(bcp); |
| 291 int length = -1; // initial value for debugging | |
| 292 // compute continuation length | |
| 2142 | 293 length = Bytecodes::length_at(method, bcp); |
| 0 | 294 // compute result type |
| 295 BasicType type = T_ILLEGAL; | |
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296 |
| 0 | 297 switch (code) { |
| 298 case Bytecodes::_invokevirtual : | |
| 299 case Bytecodes::_invokespecial : | |
| 300 case Bytecodes::_invokestatic : | |
| 301 case Bytecodes::_invokeinterface: { | |
| 302 Thread *thread = Thread::current(); | |
| 303 ResourceMark rm(thread); | |
| 304 methodHandle mh(thread, method); | |
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305 type = Bytecode_invoke(mh, bci).result_type(); |
| 0 | 306 // since the cache entry might not be initialized: |
| 307 // (NOT needed for the old calling convension) | |
| 308 if (!is_top_frame) { | |
| 309 int index = Bytes::get_native_u2(bcp+1); | |
| 310 method->constants()->cache()->entry_at(index)->set_parameter_size(callee_parameters); | |
| 311 } | |
| 312 break; | |
| 313 } | |
| 314 | |
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315 case Bytecodes::_invokedynamic: { |
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316 Thread *thread = Thread::current(); |
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317 ResourceMark rm(thread); |
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318 methodHandle mh(thread, method); |
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319 type = Bytecode_invoke(mh, bci).result_type(); |
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320 // since the cache entry might not be initialized: |
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321 // (NOT needed for the old calling convension) |
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322 if (!is_top_frame) { |
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323 int index = Bytes::get_native_u4(bcp+1); |
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324 method->constants()->cache()->secondary_entry_at(index)->set_parameter_size(callee_parameters); |
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325 } |
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326 break; |
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327 } |
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328 |
| 0 | 329 case Bytecodes::_ldc : |
| 330 case Bytecodes::_ldc_w : // fall through | |
| 331 case Bytecodes::_ldc2_w: | |
| 1602 | 332 { |
| 333 Thread *thread = Thread::current(); | |
| 334 ResourceMark rm(thread); | |
| 335 methodHandle mh(thread, method); | |
| 2142 | 336 type = Bytecode_loadconstant(mh, bci).result_type(); |
| 1602 | 337 break; |
| 338 } | |
| 0 | 339 |
| 340 default: | |
| 341 type = Bytecodes::result_type(code); | |
| 342 break; | |
| 343 } | |
| 344 | |
| 345 // return entry point for computed continuation state & bytecode length | |
| 346 return | |
| 347 is_top_frame | |
| 348 ? Interpreter::deopt_entry (as_TosState(type), length) | |
| 349 : Interpreter::return_entry(as_TosState(type), length); | |
| 350 } | |
| 351 | |
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352 // If deoptimization happens, this function returns the point where the interpreter reexecutes |
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353 // the bytecode. |
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354 // Note: Bytecodes::_athrow is a special case in that it does not return |
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355 // Interpreter::deopt_entry(vtos, 0) like others |
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356 address AbstractInterpreter::deopt_reexecute_entry(methodOop method, address bcp) { |
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357 assert(method->contains(bcp), "just checkin'"); |
| 2142 | 358 Bytecodes::Code code = Bytecodes::java_code_at(method, bcp); |
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359 #ifdef COMPILER1 |
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360 if(code == Bytecodes::_athrow ) { |
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361 return Interpreter::rethrow_exception_entry(); |
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362 } |
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363 #endif /* COMPILER1 */ |
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364 return Interpreter::deopt_entry(vtos, 0); |
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365 } |
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366 |
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367 // If deoptimization happens, the interpreter should reexecute these bytecodes. |
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368 // This function mainly helps the compilers to set up the reexecute bit. |
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369 bool AbstractInterpreter::bytecode_should_reexecute(Bytecodes::Code code) { |
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370 switch (code) { |
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371 case Bytecodes::_lookupswitch: |
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372 case Bytecodes::_tableswitch: |
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373 case Bytecodes::_fast_binaryswitch: |
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374 case Bytecodes::_fast_linearswitch: |
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375 // recompute condtional expression folded into _if<cond> |
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376 case Bytecodes::_lcmp : |
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377 case Bytecodes::_fcmpl : |
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378 case Bytecodes::_fcmpg : |
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379 case Bytecodes::_dcmpl : |
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380 case Bytecodes::_dcmpg : |
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381 case Bytecodes::_ifnull : |
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382 case Bytecodes::_ifnonnull : |
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383 case Bytecodes::_goto : |
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384 case Bytecodes::_goto_w : |
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385 case Bytecodes::_ifeq : |
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386 case Bytecodes::_ifne : |
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387 case Bytecodes::_iflt : |
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388 case Bytecodes::_ifge : |
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389 case Bytecodes::_ifgt : |
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390 case Bytecodes::_ifle : |
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391 case Bytecodes::_if_icmpeq : |
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392 case Bytecodes::_if_icmpne : |
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393 case Bytecodes::_if_icmplt : |
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394 case Bytecodes::_if_icmpge : |
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395 case Bytecodes::_if_icmpgt : |
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396 case Bytecodes::_if_icmple : |
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397 case Bytecodes::_if_acmpeq : |
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398 case Bytecodes::_if_acmpne : |
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399 // special cases |
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400 case Bytecodes::_getfield : |
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401 case Bytecodes::_putfield : |
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402 case Bytecodes::_getstatic : |
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403 case Bytecodes::_putstatic : |
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404 case Bytecodes::_aastore : |
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405 #ifdef COMPILER1 |
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406 //special case of reexecution |
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407 case Bytecodes::_athrow : |
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408 #endif |
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409 return true; |
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410 |
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411 default: |
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412 return false; |
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413 } |
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414 } |
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415 |
| 0 | 416 void AbstractInterpreterGenerator::bang_stack_shadow_pages(bool native_call) { |
| 417 // Quick & dirty stack overflow checking: bang the stack & handle trap. | |
| 418 // Note that we do the banging after the frame is setup, since the exception | |
| 419 // handling code expects to find a valid interpreter frame on the stack. | |
| 420 // Doing the banging earlier fails if the caller frame is not an interpreter | |
| 421 // frame. | |
| 422 // (Also, the exception throwing code expects to unlock any synchronized | |
| 423 // method receiever, so do the banging after locking the receiver.) | |
| 424 | |
| 425 // Bang each page in the shadow zone. We can't assume it's been done for | |
| 426 // an interpreter frame with greater than a page of locals, so each page | |
| 427 // needs to be checked. Only true for non-native. | |
| 428 if (UseStackBanging) { | |
| 429 const int start_page = native_call ? StackShadowPages : 1; | |
| 430 const int page_size = os::vm_page_size(); | |
| 431 for (int pages = start_page; pages <= StackShadowPages ; pages++) { | |
| 432 __ bang_stack_with_offset(pages*page_size); | |
| 433 } | |
| 434 } | |
| 435 } |