jdk8-mips64-public/hotspot: src/share/vm/ci/ciMethod.cpp@c775af091fe9

8025566: EXCEPTION_ACCESS_VIOLATION in compiled by C1 String.valueOf method
Reviewed-by: kvn

     1 /*

     2  * Copyright (c) 1999, 2013, Oracle and/or its affiliates. All rights reserved.

     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  *

    19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

    20  * or visit www.oracle.com if you need additional information or have any

    21  * questions.

    22  *

    23  */

    25 #include "precompiled.hpp"

    26 #include "ci/ciCallProfile.hpp"

    27 #include "ci/ciExceptionHandler.hpp"

    28 #include "ci/ciInstanceKlass.hpp"

    29 #include "ci/ciMethod.hpp"

    30 #include "ci/ciMethodBlocks.hpp"

    31 #include "ci/ciMethodData.hpp"

    32 #include "ci/ciStreams.hpp"

    33 #include "ci/ciSymbol.hpp"

    34 #include "ci/ciReplay.hpp"

    35 #include "ci/ciUtilities.hpp"

    36 #include "classfile/systemDictionary.hpp"

    37 #include "compiler/abstractCompiler.hpp"

    38 #include "compiler/compilerOracle.hpp"

    39 #include "compiler/methodLiveness.hpp"

    40 #include "interpreter/interpreter.hpp"

    41 #include "interpreter/linkResolver.hpp"

    42 #include "interpreter/oopMapCache.hpp"

    43 #include "memory/allocation.inline.hpp"

    44 #include "memory/resourceArea.hpp"

    45 #include "oops/generateOopMap.hpp"

    46 #include "oops/oop.inline.hpp"

    47 #include "prims/nativeLookup.hpp"

    48 #include "runtime/deoptimization.hpp"

    49 #include "utilities/bitMap.inline.hpp"

    50 #include "utilities/xmlstream.hpp"

    51 #ifdef COMPILER2

    52 #include "ci/bcEscapeAnalyzer.hpp"

    53 #include "ci/ciTypeFlow.hpp"

    54 #include "oops/method.hpp"

    55 #endif

    56 #ifdef SHARK

    57 #include "ci/ciTypeFlow.hpp"

    58 #include "oops/method.hpp"

    59 #endif

    61 // ciMethod

    62 //

    63 // This class represents a Method* in the HotSpot virtual

    64 // machine.

    67 // ------------------------------------------------------------------

    68 // ciMethod::ciMethod

    69 //

    70 // Loaded method.

    71 ciMethod::ciMethod(methodHandle h_m) : ciMetadata(h_m()) {

    72   assert(h_m() != NULL, "no null method");

    74   // These fields are always filled in in loaded methods.

    75   _flags = ciFlags(h_m()->access_flags());

    77   // Easy to compute, so fill them in now.

    78   _max_stack          = h_m()->max_stack();

    79   _max_locals         = h_m()->max_locals();

    80   _code_size          = h_m()->code_size();

    81   _intrinsic_id       = h_m()->intrinsic_id();

    82   _handler_count      = h_m()->exception_table_length();

    83   _uses_monitors      = h_m()->access_flags().has_monitor_bytecodes();

    84   _balanced_monitors  = !_uses_monitors || h_m()->access_flags().is_monitor_matching();

    85   _is_c1_compilable   = !h_m()->is_not_c1_compilable();

    86   _is_c2_compilable   = !h_m()->is_not_c2_compilable();

    87   // Lazy fields, filled in on demand.  Require allocation.

    88   _code               = NULL;

    89   _exception_handlers = NULL;

    90   _liveness           = NULL;

    91   _method_blocks = NULL;

    92 #if defined(COMPILER2) || defined(SHARK)

    93   _flow               = NULL;

    94   _bcea               = NULL;

    95 #endif // COMPILER2 || SHARK

    97   ciEnv *env = CURRENT_ENV;

    98   if (env->jvmti_can_hotswap_or_post_breakpoint() && can_be_compiled()) {

    99     // 6328518 check hotswap conditions under the right lock.

   100     MutexLocker locker(Compile_lock);

   101     if (Dependencies::check_evol_method(h_m()) != NULL) {

   102       _is_c1_compilable = false;

   103       _is_c2_compilable = false;

   104     }

   105   } else {

   106     CHECK_UNHANDLED_OOPS_ONLY(Thread::current()->clear_unhandled_oops());

   107   }

   109   if (h_m()->method_holder()->is_linked()) {

   110     _can_be_statically_bound = h_m()->can_be_statically_bound();

   111   } else {

   112     // Have to use a conservative value in this case.

   113     _can_be_statically_bound = false;

   114   }

   116   // Adjust the definition of this condition to be more useful:

   117   // %%% take these conditions into account in vtable generation

   118   if (!_can_be_statically_bound && h_m()->is_private())

   119     _can_be_statically_bound = true;

   120   if (_can_be_statically_bound && h_m()->is_abstract())

   121     _can_be_statically_bound = false;

   123   // generating _signature may allow GC and therefore move m.

   124   // These fields are always filled in.

   125   _name = env->get_symbol(h_m()->name());

   126   _holder = env->get_instance_klass(h_m()->method_holder());

   127   ciSymbol* sig_symbol = env->get_symbol(h_m()->signature());

   128   constantPoolHandle cpool = h_m()->constants();

   129   _signature = new (env->arena()) ciSignature(_holder, cpool, sig_symbol);

   130   _method_data = NULL;

   131   // Take a snapshot of these values, so they will be commensurate with the MDO.

   132   if (ProfileInterpreter || TieredCompilation) {

   133     int invcnt = h_m()->interpreter_invocation_count();

   134     // if the value overflowed report it as max int

   135     _interpreter_invocation_count = invcnt < 0 ? max_jint : invcnt ;

   136     _interpreter_throwout_count   = h_m()->interpreter_throwout_count();

   137   } else {

   138     _interpreter_invocation_count = 0;

   139     _interpreter_throwout_count = 0;

   140   }

   141   if (_interpreter_invocation_count == 0)

   142     _interpreter_invocation_count = 1;

   143   _instructions_size = -1;

   144 #ifdef ASSERT

   145   if (ReplayCompiles) {

   146     ciReplay::initialize(this);

   147   }

   148 #endif

   149 }

   152 // ------------------------------------------------------------------

   153 // ciMethod::ciMethod

   154 //

   155 // Unloaded method.

   156 ciMethod::ciMethod(ciInstanceKlass* holder,

   157                    ciSymbol*        name,

   158                    ciSymbol*        signature,

   159                    ciInstanceKlass* accessor) :

   160   ciMetadata((Metadata*)NULL),

   161   _name(                   name),

   162   _holder(                 holder),

   163   _intrinsic_id(           vmIntrinsics::_none),

   164   _liveness(               NULL),

   165   _can_be_statically_bound(false),

   166   _method_blocks(          NULL),

   167   _method_data(            NULL)

   168 #if defined(COMPILER2) || defined(SHARK)

   169   ,

   170   _flow(                   NULL),

   171   _bcea(                   NULL),

   172   _instructions_size(-1)

   173 #endif // COMPILER2 || SHARK

   174 {

   175   // Usually holder and accessor are the same type but in some cases

   176   // the holder has the wrong class loader (e.g. invokedynamic call

   177   // sites) so we pass the accessor.

   178   _signature = new (CURRENT_ENV->arena()) ciSignature(accessor, constantPoolHandle(), signature);

   179 }

   182 // ------------------------------------------------------------------

   183 // ciMethod::load_code

   184 //

   185 // Load the bytecodes and exception handler table for this method.

   186 void ciMethod::load_code() {

   187   VM_ENTRY_MARK;

   188   assert(is_loaded(), "only loaded methods have code");

   190   Method* me = get_Method();

   191   Arena* arena = CURRENT_THREAD_ENV->arena();

   193   // Load the bytecodes.

   194   _code = (address)arena->Amalloc(code_size());

   195   memcpy(_code, me->code_base(), code_size());

   197   // Revert any breakpoint bytecodes in ci's copy

   198   if (me->number_of_breakpoints() > 0) {

   199     BreakpointInfo* bp = me->method_holder()->breakpoints();

   200     for (; bp != NULL; bp = bp->next()) {

   201       if (bp->match(me)) {

   202         code_at_put(bp->bci(), bp->orig_bytecode());

   203       }

   204     }

   205   }

   207   // And load the exception table.

   208   ExceptionTable exc_table(me);

   210   // Allocate one extra spot in our list of exceptions.  This

   211   // last entry will be used to represent the possibility that

   212   // an exception escapes the method.  See ciExceptionHandlerStream

   213   // for details.

   214   _exception_handlers =

   215     (ciExceptionHandler**)arena->Amalloc(sizeof(ciExceptionHandler*)

   216                                          * (_handler_count + 1));

   217   if (_handler_count > 0) {

   218     for (int i=0; i<_handler_count; i++) {

   219       _exception_handlers[i] = new (arena) ciExceptionHandler(

   220                                 holder(),

   221             /* start    */      exc_table.start_pc(i),

   222             /* limit    */      exc_table.end_pc(i),

   223             /* goto pc  */      exc_table.handler_pc(i),

   224             /* cp index */      exc_table.catch_type_index(i));

   225     }

   226   }

   228   // Put an entry at the end of our list to represent the possibility

   229   // of exceptional exit.

   230   _exception_handlers[_handler_count] =

   231     new (arena) ciExceptionHandler(holder(), 0, code_size(), -1, 0);

   233   if (CIPrintMethodCodes) {

   234     print_codes();

   235   }

   236 }

   239 // ------------------------------------------------------------------

   240 // ciMethod::has_linenumber_table

   241 //

   242 // length unknown until decompression

   243 bool    ciMethod::has_linenumber_table() const {

   244   check_is_loaded();

   245   VM_ENTRY_MARK;

   246   return get_Method()->has_linenumber_table();

   247 }

   250 // ------------------------------------------------------------------

   251 // ciMethod::compressed_linenumber_table

   252 u_char* ciMethod::compressed_linenumber_table() const {

   253   check_is_loaded();

   254   VM_ENTRY_MARK;

   255   return get_Method()->compressed_linenumber_table();

   256 }

   259 // ------------------------------------------------------------------

   260 // ciMethod::line_number_from_bci

   261 int ciMethod::line_number_from_bci(int bci) const {

   262   check_is_loaded();

   263   VM_ENTRY_MARK;

   264   return get_Method()->line_number_from_bci(bci);

   265 }

   268 // ------------------------------------------------------------------

   269 // ciMethod::vtable_index

   270 //

   271 // Get the position of this method's entry in the vtable, if any.

   272 int ciMethod::vtable_index() {

   273   check_is_loaded();

   274   assert(holder()->is_linked(), "must be linked");

   275   VM_ENTRY_MARK;

   276   return get_Method()->vtable_index();

   277 }

   280 #ifdef SHARK

   281 // ------------------------------------------------------------------

   282 // ciMethod::itable_index

   283 //

   284 // Get the position of this method's entry in the itable, if any.

   285 int ciMethod::itable_index() {

   286   check_is_loaded();

   287   assert(holder()->is_linked(), "must be linked");

   288   VM_ENTRY_MARK;

   289   Method* m = get_Method();

   290   if (!m->has_itable_index())

   291     return Method::nonvirtual_vtable_index;

   292   return m->itable_index();

   293 }

   294 #endif // SHARK

   297 // ------------------------------------------------------------------

   298 // ciMethod::native_entry

   299 //

   300 // Get the address of this method's native code, if any.

   301 address ciMethod::native_entry() {

   302   check_is_loaded();

   303   assert(flags().is_native(), "must be native method");

   304   VM_ENTRY_MARK;

   305   Method* method = get_Method();

   306   address entry = method->native_function();

   307   assert(entry != NULL, "must be valid entry point");

   308   return entry;

   309 }

   312 // ------------------------------------------------------------------

   313 // ciMethod::interpreter_entry

   314 //

   315 // Get the entry point for running this method in the interpreter.

   316 address ciMethod::interpreter_entry() {

   317   check_is_loaded();

   318   VM_ENTRY_MARK;

   319   methodHandle mh(THREAD, get_Method());

   320   return Interpreter::entry_for_method(mh);

   321 }

   324 // ------------------------------------------------------------------

   325 // ciMethod::uses_balanced_monitors

   326 //

   327 // Does this method use monitors in a strict stack-disciplined manner?

   328 bool ciMethod::has_balanced_monitors() {

   329   check_is_loaded();

   330   if (_balanced_monitors) return true;

   332   // Analyze the method to see if monitors are used properly.

   333   VM_ENTRY_MARK;

   334   methodHandle method(THREAD, get_Method());

   335   assert(method->has_monitor_bytecodes(), "should have checked this");

   337   // Check to see if a previous compilation computed the

   338   // monitor-matching analysis.

   339   if (method->guaranteed_monitor_matching()) {

   340     _balanced_monitors = true;

   341     return true;

   342   }

   344   {

   345     EXCEPTION_MARK;

   346     ResourceMark rm(THREAD);

   347     GeneratePairingInfo gpi(method);

   348     gpi.compute_map(CATCH);

   349     if (!gpi.monitor_safe()) {

   350       return false;

   351     }

   352     method->set_guaranteed_monitor_matching();

   353     _balanced_monitors = true;

   354   }

   355   return true;

   356 }

   359 // ------------------------------------------------------------------

   360 // ciMethod::get_flow_analysis

   361 ciTypeFlow* ciMethod::get_flow_analysis() {

   362 #if defined(COMPILER2) || defined(SHARK)

   363   if (_flow == NULL) {

   364     ciEnv* env = CURRENT_ENV;

   365     _flow = new (env->arena()) ciTypeFlow(env, this);

   366     _flow->do_flow();

   367   }

   368   return _flow;

   369 #else // COMPILER2 || SHARK

   370   ShouldNotReachHere();

   371   return NULL;

   372 #endif // COMPILER2 || SHARK

   373 }

   376 // ------------------------------------------------------------------

   377 // ciMethod::get_osr_flow_analysis

   378 ciTypeFlow* ciMethod::get_osr_flow_analysis(int osr_bci) {

   379 #if defined(COMPILER2) || defined(SHARK)

   380   // OSR entry points are always place after a call bytecode of some sort

   381   assert(osr_bci >= 0, "must supply valid OSR entry point");

   382   ciEnv* env = CURRENT_ENV;

   383   ciTypeFlow* flow = new (env->arena()) ciTypeFlow(env, this, osr_bci);

   384   flow->do_flow();

   385   return flow;

   386 #else // COMPILER2 || SHARK

   387   ShouldNotReachHere();

   388   return NULL;

   389 #endif // COMPILER2 || SHARK

   390 }

   392 // ------------------------------------------------------------------

   393 // ciMethod::raw_liveness_at_bci

   394 //

   395 // Which local variables are live at a specific bci?

   396 MethodLivenessResult ciMethod::raw_liveness_at_bci(int bci) {

   397   check_is_loaded();

   398   if (_liveness == NULL) {

   399     // Create the liveness analyzer.

   400     Arena* arena = CURRENT_ENV->arena();

   401     _liveness = new (arena) MethodLiveness(arena, this);

   402     _liveness->compute_liveness();

   403   }

   404   return _liveness->get_liveness_at(bci);

   405 }

   407 // ------------------------------------------------------------------

   408 // ciMethod::liveness_at_bci

   409 //

   410 // Which local variables are live at a specific bci?  When debugging

   411 // will return true for all locals in some cases to improve debug

   412 // information.

   413 MethodLivenessResult ciMethod::liveness_at_bci(int bci) {

   414   MethodLivenessResult result = raw_liveness_at_bci(bci);

   415   if (CURRENT_ENV->jvmti_can_access_local_variables() || DeoptimizeALot || CompileTheWorld) {

   416     // Keep all locals live for the user's edification and amusement.

   417     result.at_put_range(0, result.size(), true);

   418   }

   419   return result;

   420 }

   422 // ciMethod::live_local_oops_at_bci

   423 //

   424 // find all the live oops in the locals array for a particular bci

   425 // Compute what the interpreter believes by using the interpreter

   426 // oopmap generator. This is used as a double check during osr to

   427 // guard against conservative result from MethodLiveness making us

   428 // think a dead oop is live.  MethodLiveness is conservative in the

   429 // sense that it may consider locals to be live which cannot be live,

   430 // like in the case where a local could contain an oop or  a primitive

   431 // along different paths.  In that case the local must be dead when

   432 // those paths merge. Since the interpreter's viewpoint is used when

   433 // gc'ing an interpreter frame we need to use its viewpoint  during

   434 // OSR when loading the locals.

   436 BitMap ciMethod::live_local_oops_at_bci(int bci) {

   437   VM_ENTRY_MARK;

   438   InterpreterOopMap mask;

   439   OopMapCache::compute_one_oop_map(get_Method(), bci, &mask);

   440   int mask_size = max_locals();

   441   BitMap result(mask_size);

   442   result.clear();

   443   int i;

   444   for (i = 0; i < mask_size ; i++ ) {

   445     if (mask.is_oop(i)) result.set_bit(i);

   446   }

   447   return result;

   448 }

   451 #ifdef COMPILER1

   452 // ------------------------------------------------------------------

   453 // ciMethod::bci_block_start

   454 //

   455 // Marks all bcis where a new basic block starts

   456 const BitMap ciMethod::bci_block_start() {

   457   check_is_loaded();

   458   if (_liveness == NULL) {

   459     // Create the liveness analyzer.

   460     Arena* arena = CURRENT_ENV->arena();

   461     _liveness = new (arena) MethodLiveness(arena, this);

   462     _liveness->compute_liveness();

   463   }

   465   return _liveness->get_bci_block_start();

   466 }

   467 #endif // COMPILER1

   470 // ------------------------------------------------------------------

   471 // ciMethod::call_profile_at_bci

   472 //

   473 // Get the ciCallProfile for the invocation of this method.

   474 // Also reports receiver types for non-call type checks (if TypeProfileCasts).

   475 ciCallProfile ciMethod::call_profile_at_bci(int bci) {

   476   ResourceMark rm;

   477   ciCallProfile result;

   478   if (method_data() != NULL && method_data()->is_mature()) {

   479     ciProfileData* data = method_data()->bci_to_data(bci);

   480     if (data != NULL && data->is_CounterData()) {

   481       // Every profiled call site has a counter.

   482       int count = data->as_CounterData()->count();

   484       if (!data->is_ReceiverTypeData()) {

   485         result._receiver_count[0] = 0;  // that's a definite zero

   486       } else { // ReceiverTypeData is a subclass of CounterData

   487         ciReceiverTypeData* call = (ciReceiverTypeData*)data->as_ReceiverTypeData();

   488         // In addition, virtual call sites have receiver type information

   489         int receivers_count_total = 0;

   490         int morphism = 0;

   491         // Precompute morphism for the possible fixup

   492         for (uint i = 0; i < call->row_limit(); i++) {

   493           ciKlass* receiver = call->receiver(i);

   494           if (receiver == NULL)  continue;

   495           morphism++;

   496         }

   497         int epsilon = 0;

   498         if (TieredCompilation && ProfileInterpreter) {

   499           // Interpreter and C1 treat final and special invokes differently.

   500           // C1 will record a type, whereas the interpreter will just

   501           // increment the count. Detect this case.

   502           if (morphism == 1 && count > 0) {

   503             epsilon = count;

   504             count = 0;

   505           }

   506         }

   507         for (uint i = 0; i < call->row_limit(); i++) {

   508           ciKlass* receiver = call->receiver(i);

   509           if (receiver == NULL)  continue;

   510           int rcount = call->receiver_count(i) + epsilon;

   511           if (rcount == 0) rcount = 1; // Should be valid value

   512           receivers_count_total += rcount;

   513           // Add the receiver to result data.

   514           result.add_receiver(receiver, rcount);

   515           // If we extend profiling to record methods,

   516           // we will set result._method also.

   517         }

   518         // Determine call site's morphism.

   519         // The call site count is 0 with known morphism (onlt 1 or 2 receivers)

   520         // or < 0 in the case of a type check failured for checkcast, aastore, instanceof.

   521         // The call site count is > 0 in the case of a polymorphic virtual call.

   522         if (morphism > 0 && morphism == result._limit) {

   523            // The morphism <= MorphismLimit.

   524            if ((morphism <  ciCallProfile::MorphismLimit) ||

   525                (morphism == ciCallProfile::MorphismLimit && count == 0)) {

   526 #ifdef ASSERT

   527              if (count > 0) {

   528                this->print_short_name(tty);

   529                tty->print_cr(" @ bci:%d", bci);

   530                this->print_codes();

   531                assert(false, "this call site should not be polymorphic");

   532              }

   533 #endif

   534              result._morphism = morphism;

   535            }

   536         }

   537         // Make the count consistent if this is a call profile. If count is

   538         // zero or less, presume that this is a typecheck profile and

   539         // do nothing.  Otherwise, increase count to be the sum of all

   540         // receiver's counts.

   541         if (count >= 0) {

   542           count += receivers_count_total;

   543         }

   544       }

   545       result._count = count;

   546     }

   547   }

   548   return result;

   549 }

   551 // ------------------------------------------------------------------

   552 // Add new receiver and sort data by receiver's profile count.

   553 void ciCallProfile::add_receiver(ciKlass* receiver, int receiver_count) {

   554   // Add new receiver and sort data by receiver's counts when we have space

   555   // for it otherwise replace the less called receiver (less called receiver

   556   // is placed to the last array element which is not used).

   557   // First array's element contains most called receiver.

   558   int i = _limit;

   559   for (; i > 0 && receiver_count > _receiver_count[i-1]; i--) {

   560     _receiver[i] = _receiver[i-1];

   561     _receiver_count[i] = _receiver_count[i-1];

   562   }

   563   _receiver[i] = receiver;

   564   _receiver_count[i] = receiver_count;

   565   if (_limit < MorphismLimit) _limit++;

   566 }

   568 // ------------------------------------------------------------------

   569 // ciMethod::find_monomorphic_target

   570 //

   571 // Given a certain calling environment, find the monomorphic target

   572 // for the call.  Return NULL if the call is not monomorphic in

   573 // its calling environment, or if there are only abstract methods.

   574 // The returned method is never abstract.

   575 // Note: If caller uses a non-null result, it must inform dependencies

   576 // via assert_unique_concrete_method or assert_leaf_type.

   577 ciMethod* ciMethod::find_monomorphic_target(ciInstanceKlass* caller,

   578                                             ciInstanceKlass* callee_holder,

   579                                             ciInstanceKlass* actual_recv) {

   580   check_is_loaded();

   582   if (actual_recv->is_interface()) {

   583     // %%% We cannot trust interface types, yet.  See bug 6312651.

   584     return NULL;

   585   }

   587   ciMethod* root_m = resolve_invoke(caller, actual_recv);

   588   if (root_m == NULL) {

   589     // Something went wrong looking up the actual receiver method.

   590     return NULL;

   591   }

   592   assert(!root_m->is_abstract(), "resolve_invoke promise");

   594   // Make certain quick checks even if UseCHA is false.

   596   // Is it private or final?

   597   if (root_m->can_be_statically_bound()) {

   598     return root_m;

   599   }

   601   if (actual_recv->is_leaf_type() && actual_recv == root_m->holder()) {

   602     // Easy case.  There is no other place to put a method, so don't bother

   603     // to go through the VM_ENTRY_MARK and all the rest.

   604     return root_m;

   605   }

   607   // Array methods (clone, hashCode, etc.) are always statically bound.

   608   // If we were to see an array type here, we'd return root_m.

   609   // However, this method processes only ciInstanceKlasses.  (See 4962591.)

   610   // The inline_native_clone intrinsic narrows Object to T[] properly,

   611   // so there is no need to do the same job here.

   613   if (!UseCHA)  return NULL;

   615   VM_ENTRY_MARK;

   617   methodHandle target;

   618   {

   619     MutexLocker locker(Compile_lock);

   620     Klass* context = actual_recv->get_Klass();

   621     target = Dependencies::find_unique_concrete_method(context,

   622                                                        root_m->get_Method());

   623     // %%% Should upgrade this ciMethod API to look for 1 or 2 concrete methods.

   624   }

   626 #ifndef PRODUCT

   627   if (TraceDependencies && target() != NULL && target() != root_m->get_Method()) {

   628     tty->print("found a non-root unique target method");

   629     tty->print_cr("  context = %s", InstanceKlass::cast(actual_recv->get_Klass())->external_name());

   630     tty->print("  method  = ");

   631     target->print_short_name(tty);

   632     tty->cr();

   633   }

   634 #endif //PRODUCT

   636   if (target() == NULL) {

   637     return NULL;

   638   }

   639   if (target() == root_m->get_Method()) {

   640     return root_m;

   641   }

   642   if (!root_m->is_public() &&

   643       !root_m->is_protected()) {

   644     // If we are going to reason about inheritance, it's easiest

   645     // if the method in question is public, protected, or private.

   646     // If the answer is not root_m, it is conservatively correct

   647     // to return NULL, even if the CHA encountered irrelevant

   648     // methods in other packages.

   649     // %%% TO DO: Work out logic for package-private methods

   650     // with the same name but different vtable indexes.

   651     return NULL;

   652   }

   653   return CURRENT_THREAD_ENV->get_method(target());

   654 }

   656 // ------------------------------------------------------------------

   657 // ciMethod::resolve_invoke

   658 //

   659 // Given a known receiver klass, find the target for the call.

   660 // Return NULL if the call has no target or the target is abstract.

   661 ciMethod* ciMethod::resolve_invoke(ciKlass* caller, ciKlass* exact_receiver) {

   662    check_is_loaded();

   663    VM_ENTRY_MARK;

   665    KlassHandle caller_klass (THREAD, caller->get_Klass());

   666    KlassHandle h_recv       (THREAD, exact_receiver->get_Klass());

   667    KlassHandle h_resolved   (THREAD, holder()->get_Klass());

   668    Symbol* h_name      = name()->get_symbol();

   669    Symbol* h_signature = signature()->get_symbol();

   671    methodHandle m;

   672    // Only do exact lookup if receiver klass has been linked.  Otherwise,

   673    // the vtable has not been setup, and the LinkResolver will fail.

   674    if (h_recv->oop_is_array()

   675         ||

   676        InstanceKlass::cast(h_recv())->is_linked() && !exact_receiver->is_interface()) {

   677      if (holder()->is_interface()) {

   678        m = LinkResolver::resolve_interface_call_or_null(h_recv, h_resolved, h_name, h_signature, caller_klass);

   679      } else {

   680        m = LinkResolver::resolve_virtual_call_or_null(h_recv, h_resolved, h_name, h_signature, caller_klass);

   681      }

   682    }

   684    if (m.is_null()) {

   685      // Return NULL only if there was a problem with lookup (uninitialized class, etc.)

   686      return NULL;

   687    }

   689    ciMethod* result = this;

   690    if (m() != get_Method()) {

   691      result = CURRENT_THREAD_ENV->get_method(m());

   692    }

   694    // Don't return abstract methods because they aren't

   695    // optimizable or interesting.

   696    if (result->is_abstract()) {

   697      return NULL;

   698    } else {

   699      return result;

   700    }

   701 }

   703 // ------------------------------------------------------------------

   704 // ciMethod::resolve_vtable_index

   705 //

   706 // Given a known receiver klass, find the vtable index for the call.

   707 // Return Method::invalid_vtable_index if the vtable_index is unknown.

   708 int ciMethod::resolve_vtable_index(ciKlass* caller, ciKlass* receiver) {

   709    check_is_loaded();

   711    int vtable_index = Method::invalid_vtable_index;

   712    // Only do lookup if receiver klass has been linked.  Otherwise,

   713    // the vtable has not been setup, and the LinkResolver will fail.

   714    if (!receiver->is_interface()

   715        && (!receiver->is_instance_klass() ||

   716            receiver->as_instance_klass()->is_linked())) {

   717      VM_ENTRY_MARK;

   719      KlassHandle caller_klass (THREAD, caller->get_Klass());

   720      KlassHandle h_recv       (THREAD, receiver->get_Klass());

   721      Symbol* h_name = name()->get_symbol();

   722      Symbol* h_signature = signature()->get_symbol();

   724      vtable_index = LinkResolver::resolve_virtual_vtable_index(h_recv, h_recv, h_name, h_signature, caller_klass);

   725      if (vtable_index == Method::nonvirtual_vtable_index) {

   726        // A statically bound method.  Return "no such index".

   727        vtable_index = Method::invalid_vtable_index;

   728      }

   729    }

   731    return vtable_index;

   732 }

   734 // ------------------------------------------------------------------

   735 // ciMethod::interpreter_call_site_count

   736 int ciMethod::interpreter_call_site_count(int bci) {

   737   if (method_data() != NULL) {

   738     ResourceMark rm;

   739     ciProfileData* data = method_data()->bci_to_data(bci);

   740     if (data != NULL && data->is_CounterData()) {

   741       return scale_count(data->as_CounterData()->count());

   742     }

   743   }

   744   return -1;  // unknown

   745 }

   747 // ------------------------------------------------------------------

   748 // ciMethod::get_field_at_bci

   749 ciField* ciMethod::get_field_at_bci(int bci, bool &will_link) {

   750   ciBytecodeStream iter(this);

   751   iter.reset_to_bci(bci);

   752   iter.next();

   753   return iter.get_field(will_link);

   754 }

   756 // ------------------------------------------------------------------

   757 // ciMethod::get_method_at_bci

   758 ciMethod* ciMethod::get_method_at_bci(int bci, bool &will_link, ciSignature* *declared_signature) {

   759   ciBytecodeStream iter(this);

   760   iter.reset_to_bci(bci);

   761   iter.next();

   762   return iter.get_method(will_link, declared_signature);

   763 }

   765 // ------------------------------------------------------------------

   766 // Adjust a CounterData count to be commensurate with

   767 // interpreter_invocation_count.  If the MDO exists for

   768 // only 25% of the time the method exists, then the

   769 // counts in the MDO should be scaled by 4X, so that

   770 // they can be usefully and stably compared against the

   771 // invocation counts in methods.

   772 int ciMethod::scale_count(int count, float prof_factor) {

   773   if (count > 0 && method_data() != NULL) {

   774     int counter_life;

   775     int method_life = interpreter_invocation_count();

   776     if (TieredCompilation) {

   777       // In tiered the MDO's life is measured directly, so just use the snapshotted counters

   778       counter_life = MAX2(method_data()->invocation_count(), method_data()->backedge_count());

   779     } else {

   780       int current_mileage = method_data()->current_mileage();

   781       int creation_mileage = method_data()->creation_mileage();

   782       counter_life = current_mileage - creation_mileage;

   783     }

   785     // counter_life due to backedge_counter could be > method_life

   786     if (counter_life > method_life)

   787       counter_life = method_life;

   788     if (0 < counter_life && counter_life <= method_life) {

   789       count = (int)((double)count * prof_factor * method_life / counter_life + 0.5);

   790       count = (count > 0) ? count : 1;

   791     }

   792   }

   793   return count;

   794 }

   797 // ------------------------------------------------------------------

   798 // ciMethod::is_special_get_caller_class_method

   799 //

   800 bool ciMethod::is_ignored_by_security_stack_walk() const {

   801   check_is_loaded();

   802   VM_ENTRY_MARK;

   803   return get_Method()->is_ignored_by_security_stack_walk();

   804 }

   807 // ------------------------------------------------------------------

   808 // invokedynamic support

   810 // ------------------------------------------------------------------

   811 // ciMethod::is_method_handle_intrinsic

   812 //

   813 // Return true if the method is an instance of the JVM-generated

   814 // signature-polymorphic MethodHandle methods, _invokeBasic, _linkToVirtual, etc.

   815 bool ciMethod::is_method_handle_intrinsic() const {

   816   vmIntrinsics::ID iid = _intrinsic_id;  // do not check if loaded

   817   return (MethodHandles::is_signature_polymorphic(iid) &&

   818           MethodHandles::is_signature_polymorphic_intrinsic(iid));

   819 }

   821 // ------------------------------------------------------------------

   822 // ciMethod::is_compiled_lambda_form

   823 //

   824 // Return true if the method is a generated MethodHandle adapter.

   825 // These are built by Java code.

   826 bool ciMethod::is_compiled_lambda_form() const {

   827   vmIntrinsics::ID iid = _intrinsic_id;  // do not check if loaded

   828   return iid == vmIntrinsics::_compiledLambdaForm;

   829 }

   831 // ------------------------------------------------------------------

   832 // ciMethod::has_member_arg

   833 //

   834 // Return true if the method is a linker intrinsic like _linkToVirtual.

   835 // These are built by the JVM.

   836 bool ciMethod::has_member_arg() const {

   837   vmIntrinsics::ID iid = _intrinsic_id;  // do not check if loaded

   838   return (MethodHandles::is_signature_polymorphic(iid) &&

   839           MethodHandles::has_member_arg(iid));

   840 }

   842 // ------------------------------------------------------------------

   843 // ciMethod::ensure_method_data

   844 //

   845 // Generate new MethodData* objects at compile time.

   846 // Return true if allocation was successful or no MDO is required.

   847 bool ciMethod::ensure_method_data(methodHandle h_m) {

   848   EXCEPTION_CONTEXT;

   849   if (is_native() || is_abstract() || h_m()->is_accessor()) {

   850     return true;

   851   }

   852   if (h_m()->method_data() == NULL) {

   853     Method::build_interpreter_method_data(h_m, THREAD);

   854     if (HAS_PENDING_EXCEPTION) {

   855       CLEAR_PENDING_EXCEPTION;

   856     }

   857   }

   858   if (h_m()->method_data() != NULL) {

   859     _method_data = CURRENT_ENV->get_method_data(h_m()->method_data());

   860     _method_data->load_data();

   861     return true;

   862   } else {

   863     _method_data = CURRENT_ENV->get_empty_methodData();

   864     return false;

   865   }

   866 }

   868 // public, retroactive version

   869 bool ciMethod::ensure_method_data() {

   870   bool result = true;

   871   if (_method_data == NULL || _method_data->is_empty()) {

   872     GUARDED_VM_ENTRY({

   873       result = ensure_method_data(get_Method());

   874     });

   875   }

   876   return result;

   877 }

   880 // ------------------------------------------------------------------

   881 // ciMethod::method_data

   882 //

   883 ciMethodData* ciMethod::method_data() {

   884   if (_method_data != NULL) {

   885     return _method_data;

   886   }

   887   VM_ENTRY_MARK;

   888   ciEnv* env = CURRENT_ENV;

   889   Thread* my_thread = JavaThread::current();

   890   methodHandle h_m(my_thread, get_Method());

   892   if (h_m()->method_data() != NULL) {

   893     _method_data = CURRENT_ENV->get_method_data(h_m()->method_data());

   894     _method_data->load_data();

   895   } else {

   896     _method_data = CURRENT_ENV->get_empty_methodData();

   897   }

   898   return _method_data;

   900 }

   902 // ------------------------------------------------------------------

   903 // ciMethod::method_data_or_null

   904 // Returns a pointer to ciMethodData if MDO exists on the VM side,

   905 // NULL otherwise.

   906 ciMethodData* ciMethod::method_data_or_null() {

   907   ciMethodData *md = method_data();

   908   if (md->is_empty()) {

   909     return NULL;

   910   }

   911   return md;

   912 }

   914 // ------------------------------------------------------------------

   915 // ciMethod::ensure_method_counters

   916 //

   917 MethodCounters* ciMethod::ensure_method_counters() {

   918   check_is_loaded();

   919   VM_ENTRY_MARK;

   920   methodHandle mh(THREAD, get_Method());

   921   MethodCounters* method_counters = mh->get_method_counters(CHECK_NULL);

   922   return method_counters;

   923 }

   925 // ------------------------------------------------------------------

   926 // ciMethod::should_exclude

   927 //

   928 // Should this method be excluded from compilation?

   929 bool ciMethod::should_exclude() {

   930   check_is_loaded();

   931   VM_ENTRY_MARK;

   932   methodHandle mh(THREAD, get_Method());

   933   bool ignore;

   934   return CompilerOracle::should_exclude(mh, ignore);

   935 }

   937 // ------------------------------------------------------------------

   938 // ciMethod::should_inline

   939 //

   940 // Should this method be inlined during compilation?

   941 bool ciMethod::should_inline() {

   942   check_is_loaded();

   943   VM_ENTRY_MARK;

   944   methodHandle mh(THREAD, get_Method());

   945   return CompilerOracle::should_inline(mh);

   946 }

   948 // ------------------------------------------------------------------

   949 // ciMethod::should_not_inline

   950 //

   951 // Should this method be disallowed from inlining during compilation?

   952 bool ciMethod::should_not_inline() {

   953   check_is_loaded();

   954   VM_ENTRY_MARK;

   955   methodHandle mh(THREAD, get_Method());

   956   return CompilerOracle::should_not_inline(mh);

   957 }

   959 // ------------------------------------------------------------------

   960 // ciMethod::should_print_assembly

   961 //

   962 // Should the compiler print the generated code for this method?

   963 bool ciMethod::should_print_assembly() {

   964   check_is_loaded();

   965   VM_ENTRY_MARK;

   966   methodHandle mh(THREAD, get_Method());

   967   return CompilerOracle::should_print(mh);

   968 }

   970 // ------------------------------------------------------------------

   971 // ciMethod::break_at_execute

   972 //

   973 // Should the compiler insert a breakpoint into the generated code

   974 // method?

   975 bool ciMethod::break_at_execute() {

   976   check_is_loaded();

   977   VM_ENTRY_MARK;

   978   methodHandle mh(THREAD, get_Method());

   979   return CompilerOracle::should_break_at(mh);

   980 }

   982 // ------------------------------------------------------------------

   983 // ciMethod::has_option

   984 //

   985 bool ciMethod::has_option(const char* option) {

   986   check_is_loaded();

   987   VM_ENTRY_MARK;

   988   methodHandle mh(THREAD, get_Method());

   989   return CompilerOracle::has_option_string(mh, option);

   990 }

   992 // ------------------------------------------------------------------

   993 // ciMethod::can_be_compiled

   994 //

   995 // Have previous compilations of this method succeeded?

   996 bool ciMethod::can_be_compiled() {

   997   check_is_loaded();

   998   ciEnv* env = CURRENT_ENV;

   999   if (is_c1_compile(env->comp_level())) {

  1000     return _is_c1_compilable;

  1001   }

  1002   return _is_c2_compilable;

  1003 }

  1005 // ------------------------------------------------------------------

  1006 // ciMethod::set_not_compilable

  1007 //

  1008 // Tell the VM that this method cannot be compiled at all.

  1009 void ciMethod::set_not_compilable(const char* reason) {

  1010   check_is_loaded();

  1011   VM_ENTRY_MARK;

  1012   ciEnv* env = CURRENT_ENV;

  1013   if (is_c1_compile(env->comp_level())) {

  1014     _is_c1_compilable = false;

  1015   } else {

  1016     _is_c2_compilable = false;

  1017   }

  1018   get_Method()->set_not_compilable(env->comp_level(), true, reason);

  1019 }

  1021 // ------------------------------------------------------------------

  1022 // ciMethod::can_be_osr_compiled

  1023 //

  1024 // Have previous compilations of this method succeeded?

  1025 //

  1026 // Implementation note: the VM does not currently keep track

  1027 // of failed OSR compilations per bci.  The entry_bci parameter

  1028 // is currently unused.

  1029 bool ciMethod::can_be_osr_compiled(int entry_bci) {

  1030   check_is_loaded();

  1031   VM_ENTRY_MARK;

  1032   ciEnv* env = CURRENT_ENV;

  1033   return !get_Method()->is_not_osr_compilable(env->comp_level());

  1034 }

  1036 // ------------------------------------------------------------------

  1037 // ciMethod::has_compiled_code

  1038 bool ciMethod::has_compiled_code() {

  1039   return instructions_size() > 0;

  1040 }

  1042 int ciMethod::comp_level() {

  1043   check_is_loaded();

  1044   VM_ENTRY_MARK;

  1045   nmethod* nm = get_Method()->code();

  1046   if (nm != NULL) return nm->comp_level();

  1047   return 0;

  1048 }

  1050 int ciMethod::highest_osr_comp_level() {

  1051   check_is_loaded();

  1052   VM_ENTRY_MARK;

  1053   return get_Method()->highest_osr_comp_level();

  1054 }

  1056 // ------------------------------------------------------------------

  1057 // ciMethod::code_size_for_inlining

  1058 //

  1059 // Code size for inlining decisions.  This method returns a code

  1060 // size of 1 for methods which has the ForceInline annotation.

  1061 int ciMethod::code_size_for_inlining() {

  1062   check_is_loaded();

  1063   if (get_Method()->force_inline()) {

  1064     return 1;

  1065   }

  1066   return code_size();

  1067 }

  1069 // ------------------------------------------------------------------

  1070 // ciMethod::instructions_size

  1071 //

  1072 // This is a rough metric for "fat" methods, compared before inlining

  1073 // with InlineSmallCode.  The CodeBlob::code_size accessor includes

  1074 // junk like exception handler, stubs, and constant table, which are

  1075 // not highly relevant to an inlined method.  So we use the more

  1076 // specific accessor nmethod::insts_size.

  1077 int ciMethod::instructions_size() {

  1078   if (_instructions_size == -1) {

  1079     GUARDED_VM_ENTRY(

  1080                      nmethod* code = get_Method()->code();

  1081                      if (code != NULL && (code->comp_level() == CompLevel_full_optimization)) {

  1082                        _instructions_size = code->insts_end() - code->verified_entry_point();

  1083                      } else {

  1084                        _instructions_size = 0;

  1085                      }

  1086                      );

  1087   }

  1088   return _instructions_size;

  1089 }

  1091 // ------------------------------------------------------------------

  1092 // ciMethod::log_nmethod_identity

  1093 void ciMethod::log_nmethod_identity(xmlStream* log) {

  1094   GUARDED_VM_ENTRY(

  1095     nmethod* code = get_Method()->code();

  1096     if (code != NULL) {

  1097       code->log_identity(log);

  1098     }

  1099   )

  1100 }

  1102 // ------------------------------------------------------------------

  1103 // ciMethod::is_not_reached

  1104 bool ciMethod::is_not_reached(int bci) {

  1105   check_is_loaded();

  1106   VM_ENTRY_MARK;

  1107   return Interpreter::is_not_reached(

  1108                methodHandle(THREAD, get_Method()), bci);

  1109 }

  1111 // ------------------------------------------------------------------

  1112 // ciMethod::was_never_executed

  1113 bool ciMethod::was_executed_more_than(int times) {

  1114   VM_ENTRY_MARK;

  1115   return get_Method()->was_executed_more_than(times);

  1116 }

  1118 // ------------------------------------------------------------------

  1119 // ciMethod::has_unloaded_classes_in_signature

  1120 bool ciMethod::has_unloaded_classes_in_signature() {

  1121   VM_ENTRY_MARK;

  1122   {

  1123     EXCEPTION_MARK;

  1124     methodHandle m(THREAD, get_Method());

  1125     bool has_unloaded = Method::has_unloaded_classes_in_signature(m, (JavaThread *)THREAD);

  1126     if( HAS_PENDING_EXCEPTION ) {

  1127       CLEAR_PENDING_EXCEPTION;

  1128       return true;     // Declare that we may have unloaded classes

  1129     }

  1130     return has_unloaded;

  1131   }

  1132 }

  1134 // ------------------------------------------------------------------

  1135 // ciMethod::is_klass_loaded

  1136 bool ciMethod::is_klass_loaded(int refinfo_index, bool must_be_resolved) const {

  1137   VM_ENTRY_MARK;

  1138   return get_Method()->is_klass_loaded(refinfo_index, must_be_resolved);

  1139 }

  1141 // ------------------------------------------------------------------

  1142 // ciMethod::check_call

  1143 bool ciMethod::check_call(int refinfo_index, bool is_static) const {

  1144   // This method is used only in C2 from InlineTree::ok_to_inline,

  1145   // and is only used under -Xcomp or -XX:CompileTheWorld.

  1146   // It appears to fail when applied to an invokeinterface call site.

  1147   // FIXME: Remove this method and resolve_method_statically; refactor to use the other LinkResolver entry points.

  1148   VM_ENTRY_MARK;

  1149   {

  1150     EXCEPTION_MARK;

  1151     HandleMark hm(THREAD);

  1152     constantPoolHandle pool (THREAD, get_Method()->constants());

  1153     methodHandle spec_method;

  1154     KlassHandle  spec_klass;

  1155     Bytecodes::Code code = (is_static ? Bytecodes::_invokestatic : Bytecodes::_invokevirtual);

  1156     LinkResolver::resolve_method_statically(spec_method, spec_klass, code, pool, refinfo_index, THREAD);

  1157     if (HAS_PENDING_EXCEPTION) {

  1158       CLEAR_PENDING_EXCEPTION;

  1159       return false;

  1160     } else {

  1161       return (spec_method->is_static() == is_static);

  1162     }

  1163   }

  1164   return false;

  1165 }

  1167 // ------------------------------------------------------------------

  1168 // ciMethod::print_codes

  1169 //

  1170 // Print the bytecodes for this method.

  1171 void ciMethod::print_codes_on(outputStream* st) {

  1172   check_is_loaded();

  1173   GUARDED_VM_ENTRY(get_Method()->print_codes_on(st);)

  1174 }

  1177 #define FETCH_FLAG_FROM_VM(flag_accessor) { \

  1178   check_is_loaded(); \

  1179   VM_ENTRY_MARK; \

  1180   return get_Method()->flag_accessor(); \

  1181 }

  1183 bool ciMethod::is_empty_method() const {         FETCH_FLAG_FROM_VM(is_empty_method); }

  1184 bool ciMethod::is_vanilla_constructor() const {  FETCH_FLAG_FROM_VM(is_vanilla_constructor); }

  1185 bool ciMethod::has_loops      () const {         FETCH_FLAG_FROM_VM(has_loops); }

  1186 bool ciMethod::has_jsrs       () const {         FETCH_FLAG_FROM_VM(has_jsrs);  }

  1187 bool ciMethod::is_accessor    () const {         FETCH_FLAG_FROM_VM(is_accessor); }

  1188 bool ciMethod::is_initializer () const {         FETCH_FLAG_FROM_VM(is_initializer); }

  1190 bool ciMethod::is_boxing_method() const {

  1191   if (holder()->is_box_klass()) {

  1192     switch (intrinsic_id()) {

  1193       case vmIntrinsics::_Boolean_valueOf:

  1194       case vmIntrinsics::_Byte_valueOf:

  1195       case vmIntrinsics::_Character_valueOf:

  1196       case vmIntrinsics::_Short_valueOf:

  1197       case vmIntrinsics::_Integer_valueOf:

  1198       case vmIntrinsics::_Long_valueOf:

  1199       case vmIntrinsics::_Float_valueOf:

  1200       case vmIntrinsics::_Double_valueOf:

  1201         return true;

  1202       default:

  1203         return false;

  1204     }

  1205   }

  1206   return false;

  1207 }

  1209 bool ciMethod::is_unboxing_method() const {

  1210   if (holder()->is_box_klass()) {

  1211     switch (intrinsic_id()) {

  1212       case vmIntrinsics::_booleanValue:

  1213       case vmIntrinsics::_byteValue:

  1214       case vmIntrinsics::_charValue:

  1215       case vmIntrinsics::_shortValue:

  1216       case vmIntrinsics::_intValue:

  1217       case vmIntrinsics::_longValue:

  1218       case vmIntrinsics::_floatValue:

  1219       case vmIntrinsics::_doubleValue:

  1220         return true;

  1221       default:

  1222         return false;

  1223     }

  1224   }

  1225   return false;

  1226 }

  1228 BCEscapeAnalyzer  *ciMethod::get_bcea() {

  1229 #ifdef COMPILER2

  1230   if (_bcea == NULL) {

  1231     _bcea = new (CURRENT_ENV->arena()) BCEscapeAnalyzer(this, NULL);

  1232   }

  1233   return _bcea;

  1234 #else // COMPILER2

  1235   ShouldNotReachHere();

  1236   return NULL;

  1237 #endif // COMPILER2

  1238 }

  1240 ciMethodBlocks  *ciMethod::get_method_blocks() {

  1241   Arena *arena = CURRENT_ENV->arena();

  1242   if (_method_blocks == NULL) {

  1243     _method_blocks = new (arena) ciMethodBlocks(arena, this);

  1244   }

  1245   return _method_blocks;

  1246 }

  1248 #undef FETCH_FLAG_FROM_VM

  1250 void ciMethod::dump_replay_data(outputStream* st) {

  1251   ResourceMark rm;

  1252   Method* method = get_Method();

  1253   MethodCounters* mcs = method->method_counters();

  1254   Klass*  holder = method->method_holder();

  1255   st->print_cr("ciMethod %s %s %s %d %d %d %d %d",

  1256                holder->name()->as_quoted_ascii(),

  1257                method->name()->as_quoted_ascii(),

  1258                method->signature()->as_quoted_ascii(),

  1259                mcs == NULL ? 0 : mcs->invocation_counter()->raw_counter(),

  1260                mcs == NULL ? 0 : mcs->backedge_counter()->raw_counter(),

  1261                interpreter_invocation_count(),

  1262                interpreter_throwout_count(),

  1263                _instructions_size);

  1264 }

  1266 // ------------------------------------------------------------------

  1267 // ciMethod::print_codes

  1268 //

  1269 // Print a range of the bytecodes for this method.

  1270 void ciMethod::print_codes_on(int from, int to, outputStream* st) {

  1271   check_is_loaded();

  1272   GUARDED_VM_ENTRY(get_Method()->print_codes_on(from, to, st);)

  1273 }

  1275 // ------------------------------------------------------------------

  1276 // ciMethod::print_name

  1277 //

  1278 // Print the name of this method, including signature and some flags.

  1279 void ciMethod::print_name(outputStream* st) {

  1280   check_is_loaded();

  1281   GUARDED_VM_ENTRY(get_Method()->print_name(st);)

  1282 }

  1284 // ------------------------------------------------------------------

  1285 // ciMethod::print_short_name

  1286 //

  1287 // Print the name of this method, without signature.

  1288 void ciMethod::print_short_name(outputStream* st) {

  1289   if (is_loaded()) {

  1290     GUARDED_VM_ENTRY(get_Method()->print_short_name(st););

  1291   } else {

  1292     // Fall back if method is not loaded.

  1293     holder()->print_name_on(st);

  1294     st->print("::");

  1295     name()->print_symbol_on(st);

  1296     if (WizardMode)

  1297       signature()->as_symbol()->print_symbol_on(st);

  1298   }

  1299 }

  1301 // ------------------------------------------------------------------

  1302 // ciMethod::print_impl

  1303 //

  1304 // Implementation of the print method.

  1305 void ciMethod::print_impl(outputStream* st) {

  1306   ciMetadata::print_impl(st);

  1307   st->print(" name=");

  1308   name()->print_symbol_on(st);

  1309   st->print(" holder=");

  1310   holder()->print_name_on(st);

  1311   st->print(" signature=");

  1312   signature()->as_symbol()->print_symbol_on(st);

  1313   if (is_loaded()) {

  1314     st->print(" loaded=true");

  1315     st->print(" arg_size=%d", arg_size());

  1316     st->print(" flags=");

  1317     flags().print_member_flags(st);

  1318   } else {

  1319     st->print(" loaded=false");

  1320   }

  1321 }

Mercurial > jdk8-mips64-public > hotspot / file revision

src/share/vm/ci/ciMethod.cpp@c775af091fe9

src/share/vm/ci/ciMethod.cpp