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 */
24
25 #include "ci/ciCallProfile.hpp"
26 #include "ci/ciExceptionHandler.hpp"
27 #include "ci/ciInstanceKlass.hpp"
28 #include "ci/ciMethod.hpp"
29 #include "ci/ciMethodBlocks.hpp"
30 #include "ci/ciMethodData.hpp"
31 #include "ci/ciStreams.hpp"
32 #include "ci/ciSymbol.hpp"
33 #include "ci/ciReplay.hpp"
34 #include "ci/ciSymbols.hpp"
35 #include "ci/ciUtilities.inline.hpp"
36 #include "compiler/abstractCompiler.hpp"
37 #include "compiler/compilerDefinitions.inline.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 "logging/log.hpp"
44 #include "logging/logStream.hpp"
45 #include "memory/allocation.inline.hpp"
46 #include "memory/resourceArea.hpp"
47 #include "oops/generateOopMap.hpp"
48 #include "oops/method.inline.hpp"
49 #include "oops/oop.inline.hpp"
50 #include "prims/methodHandles.hpp"
51 #include "runtime/deoptimization.hpp"
52 #include "runtime/handles.inline.hpp"
53 #include "utilities/bitMap.inline.hpp"
54 #include "utilities/xmlstream.hpp"
55 #ifdef COMPILER2
56 #include "ci/bcEscapeAnalyzer.hpp"
57 #include "ci/ciTypeFlow.hpp"
58 #include "oops/method.hpp"
59 #endif
60
61 // ciMethod
62 //
63 // This class represents a Method* in the HotSpot virtual
64 // machine.
65
66
67 // ------------------------------------------------------------------
68 // ciMethod::ciMethod
69 //
125 } else {
126 // Have to use a conservative value in this case.
127 _can_be_statically_bound = false;
128 _can_omit_stack_trace = true;
129 }
130
131 // Adjust the definition of this condition to be more useful:
132 // %%% take these conditions into account in vtable generation
133 if (!_can_be_statically_bound && h_m->is_private())
134 _can_be_statically_bound = true;
135 if (_can_be_statically_bound && h_m->is_abstract())
136 _can_be_statically_bound = false;
137
138 // generating _signature may allow GC and therefore move m.
139 // These fields are always filled in.
140 _name = env->get_symbol(h_m->name());
141 ciSymbol* sig_symbol = env->get_symbol(h_m->signature());
142 constantPoolHandle cpool(Thread::current(), h_m->constants());
143 _signature = new (env->arena()) ciSignature(_holder, cpool, sig_symbol);
144 _method_data = nullptr;
145 // Take a snapshot of these values, so they will be commensurate with the MDO.
146 if (ProfileInterpreter || CompilerConfig::is_c1_profiling()) {
147 int invcnt = h_m->interpreter_invocation_count();
148 // if the value overflowed report it as max int
149 _interpreter_invocation_count = invcnt < 0 ? max_jint : invcnt ;
150 _interpreter_throwout_count = h_m->interpreter_throwout_count();
151 } else {
152 _interpreter_invocation_count = 0;
153 _interpreter_throwout_count = 0;
154 }
155 if (_interpreter_invocation_count == 0)
156 _interpreter_invocation_count = 1;
157 _inline_instructions_size = -1;
158 if (ReplayCompiles) {
159 ciReplay::initialize(this);
160 }
161 }
162
163
164 // ------------------------------------------------------------------
165 // ciMethod::ciMethod
166 //
167 // Unloaded method.
168 ciMethod::ciMethod(ciInstanceKlass* holder,
169 ciSymbol* name,
170 ciSymbol* signature,
171 ciInstanceKlass* accessor) :
172 ciMetadata((Metadata*)nullptr),
173 _name( name),
174 _holder( holder),
175 _method_data( nullptr),
176 _method_blocks( nullptr),
177 _intrinsic_id( vmIntrinsics::_none),
178 _inline_instructions_size(-1),
179 _can_be_statically_bound(false),
180 _can_omit_stack_trace(true),
181 _liveness( nullptr)
182 #if defined(COMPILER2)
183 ,
184 _flow( nullptr),
185 _bcea( nullptr)
186 #endif // COMPILER2
187 {
188 // Usually holder and accessor are the same type but in some cases
189 // the holder has the wrong class loader (e.g. invokedynamic call
190 // sites) so we pass the accessor.
191 _signature = new (CURRENT_ENV->arena()) ciSignature(accessor, constantPoolHandle(), signature);
192 }
193
194
195 // ------------------------------------------------------------------
196 // ciMethod::load_code
197 //
198 // Load the bytecodes and exception handler table for this method.
199 void ciMethod::load_code() {
200 VM_ENTRY_MARK;
979 bool ciMethod::is_scoped() const {
980 return get_Method()->is_scoped();
981 }
982
983 // ------------------------------------------------------------------
984 // ciMethod::has_member_arg
985 //
986 // Return true if the method is a linker intrinsic like _linkToVirtual.
987 // These are built by the JVM.
988 bool ciMethod::has_member_arg() const {
989 vmIntrinsics::ID iid = _intrinsic_id; // do not check if loaded
990 return (MethodHandles::is_signature_polymorphic(iid) &&
991 MethodHandles::has_member_arg(iid));
992 }
993
994 // ------------------------------------------------------------------
995 // ciMethod::ensure_method_data
996 //
997 // Generate new MethodData* objects at compile time.
998 // Return true if allocation was successful or no MDO is required.
999 bool ciMethod::ensure_method_data(const methodHandle& h_m) {
1000 EXCEPTION_CONTEXT;
1001 if (is_native() || is_abstract() || h_m()->is_accessor()) {
1002 return true;
1003 }
1004 if (h_m()->method_data() == nullptr) {
1005 Method::build_profiling_method_data(h_m, THREAD);
1006 if (HAS_PENDING_EXCEPTION) {
1007 CLEAR_PENDING_EXCEPTION;
1008 }
1009 }
1010 if (h_m()->method_data() != nullptr) {
1011 _method_data = CURRENT_ENV->get_method_data(h_m()->method_data());
1012 return _method_data->load_data();
1013 } else {
1014 _method_data = CURRENT_ENV->get_empty_methodData();
1015 return false;
1016 }
1017 }
1018
1019 // public, retroactive version
1020 bool ciMethod::ensure_method_data() {
1021 bool result = true;
1022 if (_method_data == nullptr || _method_data->is_empty()) {
1023 GUARDED_VM_ENTRY({
1024 methodHandle mh(Thread::current(), get_Method());
1025 result = ensure_method_data(mh);
1026 });
1027 }
1028 return result;
1029 }
1030
1031
1032 // ------------------------------------------------------------------
1033 // ciMethod::method_data
1034 //
1035 ciMethodData* ciMethod::method_data() {
1036 if (_method_data != nullptr) {
1037 return _method_data;
1038 }
1039 VM_ENTRY_MARK;
1040 ciEnv* env = CURRENT_ENV;
1041 Thread* my_thread = JavaThread::current();
1042 methodHandle h_m(my_thread, get_Method());
1043
1044 if (h_m()->method_data() != nullptr) {
1045 _method_data = CURRENT_ENV->get_method_data(h_m()->method_data());
1046 _method_data->load_data();
1047 } else {
1048 _method_data = CURRENT_ENV->get_empty_methodData();
1049 }
1050 return _method_data;
1051
1052 }
1053
1054 // ------------------------------------------------------------------
1055 // ciMethod::method_data_or_null
1056 // Returns a pointer to ciMethodData if MDO exists on the VM side,
1057 // null otherwise.
1058 ciMethodData* ciMethod::method_data_or_null() {
1059 ciMethodData *md = method_data();
1060 if (md->is_empty()) {
1061 return nullptr;
1062 }
1063 return md;
1064 }
1065
1066 // ------------------------------------------------------------------
1067 // ciMethod::ensure_method_counters
1068 //
1069 MethodCounters* ciMethod::ensure_method_counters() {
1070 check_is_loaded();
1071 VM_ENTRY_MARK;
1086
1087 // ------------------------------------------------------------------
1088 // ciMethod::has_option_value
1089 //
1090 bool ciMethod::has_option_value(CompileCommandEnum option, double& value) {
1091 check_is_loaded();
1092 VM_ENTRY_MARK;
1093 methodHandle mh(THREAD, get_Method());
1094 return CompilerOracle::has_option_value(mh, option, value);
1095 }
1096 // ------------------------------------------------------------------
1097 // ciMethod::can_be_compiled
1098 //
1099 // Have previous compilations of this method succeeded?
1100 bool ciMethod::can_be_compiled() {
1101 check_is_loaded();
1102 ciEnv* env = CURRENT_ENV;
1103 if (is_c1_compile(env->comp_level())) {
1104 return _is_c1_compilable;
1105 }
1106 return _is_c2_compilable;
1107 }
1108
1109 // ------------------------------------------------------------------
1110 // ciMethod::has_compiled_code
1111 bool ciMethod::has_compiled_code() {
1112 return inline_instructions_size() > 0;
1113 }
1114
1115 int ciMethod::highest_osr_comp_level() {
1116 check_is_loaded();
1117 VM_ENTRY_MARK;
1118 return get_Method()->highest_osr_comp_level();
1119 }
1120
1121 // ------------------------------------------------------------------
1122 // ciMethod::code_size_for_inlining
1123 //
1124 // Code size for inlining decisions. This method returns a code
1125 // size of 1 for methods which has the ForceInline annotation.
1126 int ciMethod::code_size_for_inlining() {
1127 check_is_loaded();
1128 if (get_Method()->force_inline()) {
1129 return 1;
1130 }
1131 return code_size();
1132 }
1133
1134 // ------------------------------------------------------------------
1135 // ciMethod::inline_instructions_size
1136 //
1137 // This is a rough metric for "fat" methods, compared before inlining
1138 // with InlineSmallCode. The CodeBlob::code_size accessor includes
1139 // junk like exception handler, stubs, and constant table, which are
1140 // not highly relevant to an inlined method. So we use the more
1141 // specific accessor nmethod::insts_size.
1142 // Also some instructions inside the code are excluded from inline
1143 // heuristic (e.g. post call nop instructions; see InlineSkippedInstructionsCounter)
1144 int ciMethod::inline_instructions_size() {
1145 if (_inline_instructions_size == -1) {
1146 GUARDED_VM_ENTRY(
1147 nmethod* code = get_Method()->code();
1148 if (code != nullptr && (code->comp_level() == CompLevel_full_optimization)) {
1149 int isize = code->insts_end() - code->verified_entry_point() - code->skipped_instructions_size();
1150 _inline_instructions_size = isize > 0 ? isize : 0;
1151 } else {
1152 _inline_instructions_size = 0;
1153 }
1154 );
1155 }
1156 return _inline_instructions_size;
1157 }
1158
1159 // ------------------------------------------------------------------
1160 // ciMethod::log_nmethod_identity
1161 void ciMethod::log_nmethod_identity(xmlStream* log) {
1162 GUARDED_VM_ENTRY(
1163 nmethod* code = get_Method()->code();
1164 if (code != nullptr) {
1165 code->log_identity(log);
1166 }
1167 )
1168 }
1169
1170 // ------------------------------------------------------------------
1171 // ciMethod::is_not_reached
1172 bool ciMethod::is_not_reached(int bci) {
1173 check_is_loaded();
1174 VM_ENTRY_MARK;
1175 return Interpreter::is_not_reached(
1176 methodHandle(THREAD, get_Method()), bci);
1177 }
1178
1179 // ------------------------------------------------------------------
1180 // ciMethod::was_never_executed
1181 bool ciMethod::was_executed_more_than(int times) {
1182 VM_ENTRY_MARK;
1183 return get_Method()->was_executed_more_than(times);
1184 }
1185
1186 // ------------------------------------------------------------------
1187 // ciMethod::has_unloaded_classes_in_signature
1188 bool ciMethod::has_unloaded_classes_in_signature() {
1189 // ciSignature is resolved against some accessing class and
1190 // signature classes aren't required to be local. As a benefit,
1191 // it makes signature classes visible through loader constraints.
1192 // So, encountering an unloaded class signals it is absent both in
1193 // the callee (local) and caller contexts.
1194 return signature()->has_unloaded_classes();
1195 }
1196
1197 // ------------------------------------------------------------------
1198 // ciMethod::is_klass_loaded
1199 bool ciMethod::is_klass_loaded(int refinfo_index, Bytecodes::Code bc, bool must_be_resolved) const {
1200 VM_ENTRY_MARK;
1201 return get_Method()->is_klass_loaded(refinfo_index, bc, must_be_resolved);
|
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 */
24
25 #include "cds/aotLinkedClassBulkLoader.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/ciSymbols.hpp"
36 #include "ci/ciUtilities.inline.hpp"
37 #include "compiler/compileTask.hpp"
38 #include "compiler/abstractCompiler.hpp"
39 #include "compiler/compilerDefinitions.inline.hpp"
40 #include "compiler/compilerOracle.hpp"
41 #include "compiler/methodLiveness.hpp"
42 #include "interpreter/interpreter.hpp"
43 #include "interpreter/linkResolver.hpp"
44 #include "interpreter/oopMapCache.hpp"
45 #include "logging/log.hpp"
46 #include "logging/logStream.hpp"
47 #include "memory/allocation.inline.hpp"
48 #include "memory/resourceArea.hpp"
49 #include "oops/generateOopMap.hpp"
50 #include "oops/method.inline.hpp"
51 #include "oops/oop.inline.hpp"
52 #include "oops/trainingData.hpp"
53 #include "prims/methodHandles.hpp"
54 #include "runtime/deoptimization.hpp"
55 #include "runtime/handles.inline.hpp"
56 #include "utilities/bitMap.inline.hpp"
57 #include "utilities/xmlstream.hpp"
58 #ifdef COMPILER2
59 #include "ci/bcEscapeAnalyzer.hpp"
60 #include "ci/ciTypeFlow.hpp"
61 #include "oops/method.hpp"
62 #endif
63
64 // ciMethod
65 //
66 // This class represents a Method* in the HotSpot virtual
67 // machine.
68
69
70 // ------------------------------------------------------------------
71 // ciMethod::ciMethod
72 //
128 } else {
129 // Have to use a conservative value in this case.
130 _can_be_statically_bound = false;
131 _can_omit_stack_trace = true;
132 }
133
134 // Adjust the definition of this condition to be more useful:
135 // %%% take these conditions into account in vtable generation
136 if (!_can_be_statically_bound && h_m->is_private())
137 _can_be_statically_bound = true;
138 if (_can_be_statically_bound && h_m->is_abstract())
139 _can_be_statically_bound = false;
140
141 // generating _signature may allow GC and therefore move m.
142 // These fields are always filled in.
143 _name = env->get_symbol(h_m->name());
144 ciSymbol* sig_symbol = env->get_symbol(h_m->signature());
145 constantPoolHandle cpool(Thread::current(), h_m->constants());
146 _signature = new (env->arena()) ciSignature(_holder, cpool, sig_symbol);
147 _method_data = nullptr;
148 _method_data_recorded = nullptr;
149 // Take a snapshot of these values, so they will be commensurate with the MDO.
150 if (ProfileInterpreter || CompilerConfig::is_c1_profiling()) {
151 int invcnt = h_m->interpreter_invocation_count();
152 // if the value overflowed report it as max int
153 _interpreter_invocation_count = invcnt < 0 ? max_jint : invcnt ;
154 _interpreter_throwout_count = h_m->interpreter_throwout_count();
155 } else {
156 _interpreter_invocation_count = 0;
157 _interpreter_throwout_count = 0;
158 }
159 if (_interpreter_invocation_count == 0)
160 _interpreter_invocation_count = 1;
161 _inline_instructions_size = -1;
162 if (ReplayCompiles) {
163 ciReplay::initialize(this);
164 }
165 DirectiveSet* directives = DirectivesStack::getMatchingDirective(h_m, CURRENT_ENV->task()->compiler());
166 ccstrlist bci_list = directives->TooManyTrapsAtBCIOption;
167 int len = (int)strlen(bci_list);
168 Arena* arena = CURRENT_ENV->arena();
169 _has_trap_at_bci = new (arena) GrowableArray<int>(arena, 2, 0, 0);
170 for (int i = 0; i < len; i++) {
171 int v = -1;
172 int read;
173 if (sscanf(bci_list + i, "%i%n", &v, &read) != 1) {
174 warning("wrong format for TooManyTrapsAtBCI option: \"%s\"", bci_list);
175 break;
176 }
177 assert(v >= 0 && v < (1<<16), "%i", v);
178 _has_trap_at_bci->append_if_missing(v);
179 i += read;
180 }
181 }
182
183
184 // ------------------------------------------------------------------
185 // ciMethod::ciMethod
186 //
187 // Unloaded method.
188 ciMethod::ciMethod(ciInstanceKlass* holder,
189 ciSymbol* name,
190 ciSymbol* signature,
191 ciInstanceKlass* accessor) :
192 ciMetadata((Metadata*)nullptr),
193 _name( name),
194 _holder( holder),
195 _method_data( nullptr),
196 _method_data_recorded( nullptr),
197 _method_blocks( nullptr),
198 _intrinsic_id( vmIntrinsics::_none),
199 _inline_instructions_size(-1),
200 _can_be_statically_bound(false),
201 _can_omit_stack_trace(true),
202 _has_trap_at_bci( nullptr),
203 _liveness( nullptr)
204 #if defined(COMPILER2)
205 ,
206 _flow( nullptr),
207 _bcea( nullptr)
208 #endif // COMPILER2
209 {
210 // Usually holder and accessor are the same type but in some cases
211 // the holder has the wrong class loader (e.g. invokedynamic call
212 // sites) so we pass the accessor.
213 _signature = new (CURRENT_ENV->arena()) ciSignature(accessor, constantPoolHandle(), signature);
214 }
215
216
217 // ------------------------------------------------------------------
218 // ciMethod::load_code
219 //
220 // Load the bytecodes and exception handler table for this method.
221 void ciMethod::load_code() {
222 VM_ENTRY_MARK;
1001 bool ciMethod::is_scoped() const {
1002 return get_Method()->is_scoped();
1003 }
1004
1005 // ------------------------------------------------------------------
1006 // ciMethod::has_member_arg
1007 //
1008 // Return true if the method is a linker intrinsic like _linkToVirtual.
1009 // These are built by the JVM.
1010 bool ciMethod::has_member_arg() const {
1011 vmIntrinsics::ID iid = _intrinsic_id; // do not check if loaded
1012 return (MethodHandles::is_signature_polymorphic(iid) &&
1013 MethodHandles::has_member_arg(iid));
1014 }
1015
1016 // ------------------------------------------------------------------
1017 // ciMethod::ensure_method_data
1018 //
1019 // Generate new MethodData* objects at compile time.
1020 // Return true if allocation was successful or no MDO is required.
1021 bool ciMethod::ensure_method_data(const methodHandle& h_m, bool training_data_only) {
1022 EXCEPTION_CONTEXT;
1023 if (is_native() || is_abstract() || h_m()->is_accessor()) {
1024 return true;
1025 }
1026 if (h_m()->method_data() == nullptr) {
1027 if (training_data_only) {
1028 Method::install_training_method_data(h_m);
1029 } else {
1030 Method::build_profiling_method_data(h_m, THREAD);
1031 if (HAS_PENDING_EXCEPTION) {
1032 CLEAR_PENDING_EXCEPTION;
1033 }
1034 }
1035 }
1036 if (h_m()->method_data() != nullptr) {
1037 _method_data = CURRENT_ENV->get_method_data(h_m()->method_data());
1038 return _method_data->load_data();
1039 } else {
1040 _method_data = CURRENT_ENV->get_empty_methodData();
1041 return false;
1042 }
1043 }
1044
1045 // public, retroactive version
1046 bool ciMethod::ensure_method_data(bool training_data_only) {
1047 bool result = true;
1048 if (_method_data == nullptr || _method_data->is_empty()) {
1049 GUARDED_VM_ENTRY({
1050 methodHandle mh(Thread::current(), get_Method());
1051 result = ensure_method_data(mh, training_data_only);
1052 });
1053 }
1054 return result;
1055 }
1056
1057
1058 // ------------------------------------------------------------------
1059 // ciMethod::method_data
1060 //
1061 ciMethodData* ciMethod::method_data() {
1062 if (CURRENT_ENV->task()->is_precompiled() && CURRENT_ENV->task()->comp_level() == CompLevel_full_optimization) {
1063 if (_method_data_recorded == nullptr) {
1064 VM_ENTRY_MARK;
1065 methodHandle h_m(thread, get_Method());
1066 MethodTrainingData* mtd = MethodTrainingData::find(h_m);
1067 MethodData* mdo = (mtd != nullptr ? mtd->final_profile() : nullptr);
1068 DirectiveSet* directives = DirectivesStack::getMatchingDirective(h_m, CURRENT_ENV->task()->compiler());
1069 if (mdo == nullptr || directives->IgnoreRecordedProfileOption) {
1070 if (directives->IgnoreRecordedProfileOption) {
1071 ResourceMark rm;
1072 log_debug(precompile)("Ignore recorded profile for %s", h_m->name_and_sig_as_C_string());
1073 } else {
1074 ResourceMark rm;
1075 log_debug(precompile)("No profile for %s", h_m->name_and_sig_as_C_string());
1076 }
1077 _method_data_recorded = CURRENT_ENV->get_empty_methodData();
1078 } else {
1079 #if INCLUDE_CDS
1080 if (mdo->extra_data_lock() == nullptr) {
1081 assert(!HAS_PENDING_EXCEPTION, "");
1082 mdo->restore_unshareable_info(thread);
1083 assert(!HAS_PENDING_EXCEPTION, "");
1084 }
1085 #endif
1086 _method_data_recorded = CURRENT_ENV->get_method_data(mdo);
1087 _method_data_recorded->load_data();
1088 {
1089 ResourceMark rm;
1090 log_debug(precompile)("Recorded profile " PTR_FORMAT " for %s", p2i(mdo), h_m->name_and_sig_as_C_string());
1091 }
1092 }
1093 }
1094 assert(_method_data_recorded != nullptr, "");
1095 return _method_data_recorded;
1096 } else {
1097 if (_method_data != nullptr) {
1098 return _method_data;
1099 }
1100 VM_ENTRY_MARK;
1101 methodHandle h_m(thread, get_Method());
1102 MethodData* mdo = h_m()->method_data();
1103 if (mdo != nullptr) {
1104 _method_data = CURRENT_ENV->get_method_data(mdo);
1105 _method_data->load_data();
1106 } else {
1107 _method_data = CURRENT_ENV->get_empty_methodData();
1108 }
1109 return _method_data;
1110 }
1111 }
1112
1113 // ------------------------------------------------------------------
1114 // ciMethod::method_data_or_null
1115 // Returns a pointer to ciMethodData if MDO exists on the VM side,
1116 // null otherwise.
1117 ciMethodData* ciMethod::method_data_or_null() {
1118 ciMethodData *md = method_data();
1119 if (md->is_empty()) {
1120 return nullptr;
1121 }
1122 return md;
1123 }
1124
1125 // ------------------------------------------------------------------
1126 // ciMethod::ensure_method_counters
1127 //
1128 MethodCounters* ciMethod::ensure_method_counters() {
1129 check_is_loaded();
1130 VM_ENTRY_MARK;
1145
1146 // ------------------------------------------------------------------
1147 // ciMethod::has_option_value
1148 //
1149 bool ciMethod::has_option_value(CompileCommandEnum option, double& value) {
1150 check_is_loaded();
1151 VM_ENTRY_MARK;
1152 methodHandle mh(THREAD, get_Method());
1153 return CompilerOracle::has_option_value(mh, option, value);
1154 }
1155 // ------------------------------------------------------------------
1156 // ciMethod::can_be_compiled
1157 //
1158 // Have previous compilations of this method succeeded?
1159 bool ciMethod::can_be_compiled() {
1160 check_is_loaded();
1161 ciEnv* env = CURRENT_ENV;
1162 if (is_c1_compile(env->comp_level())) {
1163 return _is_c1_compilable;
1164 }
1165
1166 #if INCLUDE_JVMCI
1167 if (EnableJVMCI && UseJVMCICompiler &&
1168 env->comp_level() == CompLevel_full_optimization && !AOTLinkedClassBulkLoader::class_preloading_finished()) {
1169 return false;
1170 }
1171 #endif
1172 return _is_c2_compilable;
1173 }
1174
1175 // ------------------------------------------------------------------
1176 // ciMethod::has_compiled_code
1177 bool ciMethod::has_compiled_code() {
1178 return inline_instructions_size() > 0;
1179 }
1180
1181 int ciMethod::highest_osr_comp_level() {
1182 check_is_loaded();
1183 VM_ENTRY_MARK;
1184 return get_Method()->highest_osr_comp_level();
1185 }
1186
1187 // ------------------------------------------------------------------
1188 // ciMethod::code_size_for_inlining
1189 //
1190 // Code size for inlining decisions. This method returns a code
1191 // size of 1 for methods which has the ForceInline annotation.
1192 int ciMethod::code_size_for_inlining() {
1193 check_is_loaded();
1194 if (get_Method()->force_inline()) {
1195 return 1;
1196 }
1197 return code_size();
1198 }
1199
1200 // ------------------------------------------------------------------
1201 // ciMethod::inline_instructions_size
1202 //
1203 // This is a rough metric for "fat" methods, compared before inlining
1204 // with InlineSmallCode. The CodeBlob::code_size accessor includes
1205 // junk like exception handler, stubs, and constant table, which are
1206 // not highly relevant to an inlined method. So we use the more
1207 // specific accessor nmethod::insts_size.
1208 // Also some instructions inside the code are excluded from inline
1209 // heuristic (e.g. post call nop instructions; see InlineSkippedInstructionsCounter)
1210 int ciMethod::inline_instructions_size() {
1211 if (_inline_instructions_size == -1) {
1212 if (TrainingData::have_data()) {
1213 GUARDED_VM_ENTRY(
1214 CompLevel level = static_cast<CompLevel>(CURRENT_ENV->comp_level());
1215 methodHandle top_level_mh(Thread::current(), CURRENT_ENV->task()->method());
1216 MethodTrainingData* mtd = MethodTrainingData::find(top_level_mh);
1217 if (mtd != nullptr) {
1218 CompileTrainingData* ctd = mtd->last_toplevel_compile(level);
1219 if (ctd != nullptr) {
1220 methodHandle mh(Thread::current(), get_Method());
1221 MethodTrainingData* this_mtd = MethodTrainingData::find(mh);
1222 if (this_mtd != nullptr) {
1223 auto r = ctd->ci_records().ciMethod__inline_instructions_size.find(this_mtd);
1224 if (r.is_valid()) {
1225 _inline_instructions_size = r.result();
1226 }
1227 }
1228 }
1229 }
1230 );
1231 }
1232 }
1233 if (_inline_instructions_size == -1) {
1234 GUARDED_VM_ENTRY(
1235 nmethod* code = get_Method()->code();
1236 if (code != nullptr && !code->is_scc() && (code->comp_level() == CompLevel_full_optimization)) {
1237 int isize = code->insts_end() - code->verified_entry_point() - code->skipped_instructions_size();
1238 _inline_instructions_size = isize > 0 ? isize : 0;
1239 } else {
1240 _inline_instructions_size = 0;
1241 }
1242 if (TrainingData::need_data()) {
1243 CompileTrainingData* ctd = CURRENT_ENV->task()->training_data();
1244 if (ctd != nullptr) {
1245 methodHandle mh(Thread::current(), get_Method());
1246 MethodTrainingData* this_mtd = MethodTrainingData::make(mh);
1247 ctd->ci_records().ciMethod__inline_instructions_size.append_if_missing(_inline_instructions_size, this_mtd);
1248 }
1249 }
1250 );
1251 }
1252 return _inline_instructions_size;
1253 }
1254
1255 // ------------------------------------------------------------------
1256 // ciMethod::log_nmethod_identity
1257 void ciMethod::log_nmethod_identity(xmlStream* log) {
1258 GUARDED_VM_ENTRY(
1259 nmethod* code = get_Method()->code();
1260 if (code != nullptr) {
1261 code->log_identity(log);
1262 }
1263 )
1264 }
1265
1266 // ------------------------------------------------------------------
1267 // ciMethod::is_not_reached
1268 bool ciMethod::is_not_reached(int bci) {
1269 check_is_loaded();
1270 VM_ENTRY_MARK;
1271 return Interpreter::is_not_reached(
1272 methodHandle(THREAD, get_Method()), bci);
1273 }
1274
1275 // ------------------------------------------------------------------
1276 // ciMethod::was_never_executed
1277 bool ciMethod::was_executed_more_than(int times) {
1278 // Invocation counter is reset when the Method* is compiled.
1279 // If the method has compiled code we therefore assume it has
1280 // be executed more than n times.
1281 if (is_accessor() || is_empty() || has_compiled_code()) {
1282 // interpreter doesn't bump invocation counter of trivial methods
1283 // compiler does not bump invocation counter of compiled methods
1284 return true;
1285 }
1286 if (!method_data()->is_empty()) {
1287 return (method_data()->invocation_count() > times);
1288 }
1289 VM_ENTRY_MARK;
1290 return get_Method()->was_executed_more_than(times);
1291 }
1292
1293 // ------------------------------------------------------------------
1294 // ciMethod::has_unloaded_classes_in_signature
1295 bool ciMethod::has_unloaded_classes_in_signature() {
1296 // ciSignature is resolved against some accessing class and
1297 // signature classes aren't required to be local. As a benefit,
1298 // it makes signature classes visible through loader constraints.
1299 // So, encountering an unloaded class signals it is absent both in
1300 // the callee (local) and caller contexts.
1301 return signature()->has_unloaded_classes();
1302 }
1303
1304 // ------------------------------------------------------------------
1305 // ciMethod::is_klass_loaded
1306 bool ciMethod::is_klass_loaded(int refinfo_index, Bytecodes::Code bc, bool must_be_resolved) const {
1307 VM_ENTRY_MARK;
1308 return get_Method()->is_klass_loaded(refinfo_index, bc, must_be_resolved);
|