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/ciReplay.hpp"
32 #include "ci/ciStreams.hpp"
33 #include "ci/ciSymbol.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;
985 bool ciMethod::is_scoped() const {
986 return get_Method()->is_scoped();
987 }
988
989 // ------------------------------------------------------------------
990 // ciMethod::has_member_arg
991 //
992 // Return true if the method is a linker intrinsic like _linkToVirtual.
993 // These are built by the JVM.
994 bool ciMethod::has_member_arg() const {
995 vmIntrinsics::ID iid = _intrinsic_id; // do not check if loaded
996 return (MethodHandles::is_signature_polymorphic(iid) &&
997 MethodHandles::has_member_arg(iid));
998 }
999
1000 // ------------------------------------------------------------------
1001 // ciMethod::ensure_method_data
1002 //
1003 // Generate new MethodData* objects at compile time.
1004 // Return true if allocation was successful or no MDO is required.
1005 bool ciMethod::ensure_method_data(const methodHandle& h_m) {
1006 EXCEPTION_CONTEXT;
1007 if (is_native() || is_abstract() || h_m()->is_accessor()) {
1008 return true;
1009 }
1010 if (h_m()->method_data() == nullptr) {
1011 Method::build_profiling_method_data(h_m, THREAD);
1012 if (HAS_PENDING_EXCEPTION) {
1013 CLEAR_PENDING_EXCEPTION;
1014 }
1015 }
1016 if (h_m()->method_data() != nullptr) {
1017 _method_data = CURRENT_ENV->get_method_data(h_m()->method_data());
1018 return _method_data->load_data();
1019 } else {
1020 _method_data = CURRENT_ENV->get_empty_methodData();
1021 return false;
1022 }
1023 }
1024
1025 // public, retroactive version
1026 bool ciMethod::ensure_method_data() {
1027 bool result = true;
1028 if (_method_data == nullptr || _method_data->is_empty()) {
1029 GUARDED_VM_ENTRY({
1030 methodHandle mh(Thread::current(), get_Method());
1031 result = ensure_method_data(mh);
1032 });
1033 }
1034 return result;
1035 }
1036
1037
1038 // ------------------------------------------------------------------
1039 // ciMethod::method_data
1040 //
1041 ciMethodData* ciMethod::method_data() {
1042 if (_method_data != nullptr) {
1043 return _method_data;
1044 }
1045 VM_ENTRY_MARK;
1046 ciEnv* env = CURRENT_ENV;
1047 Thread* my_thread = JavaThread::current();
1048 methodHandle h_m(my_thread, get_Method());
1049
1050 if (h_m()->method_data() != nullptr) {
1051 _method_data = CURRENT_ENV->get_method_data(h_m()->method_data());
1052 _method_data->load_data();
1053 } else {
1054 _method_data = CURRENT_ENV->get_empty_methodData();
1055 }
1056 return _method_data;
1057
1058 }
1059
1060 // ------------------------------------------------------------------
1061 // ciMethod::method_data_or_null
1062 // Returns a pointer to ciMethodData if MDO exists on the VM side,
1063 // null otherwise.
1064 ciMethodData* ciMethod::method_data_or_null() {
1065 ciMethodData *md = method_data();
1066 if (md->is_empty()) {
1067 return nullptr;
1068 }
1069 return md;
1070 }
1071
1072 // ------------------------------------------------------------------
1073 // ciMethod::ensure_method_counters
1074 //
1075 MethodCounters* ciMethod::ensure_method_counters() {
1076 check_is_loaded();
1077 VM_ENTRY_MARK;
1092
1093 // ------------------------------------------------------------------
1094 // ciMethod::has_option_value
1095 //
1096 bool ciMethod::has_option_value(CompileCommandEnum option, double& value) {
1097 check_is_loaded();
1098 VM_ENTRY_MARK;
1099 methodHandle mh(THREAD, get_Method());
1100 return CompilerOracle::has_option_value(mh, option, value);
1101 }
1102 // ------------------------------------------------------------------
1103 // ciMethod::can_be_compiled
1104 //
1105 // Have previous compilations of this method succeeded?
1106 bool ciMethod::can_be_compiled() {
1107 check_is_loaded();
1108 ciEnv* env = CURRENT_ENV;
1109 if (is_c1_compile(env->comp_level())) {
1110 return _is_c1_compilable;
1111 }
1112 return _is_c2_compilable;
1113 }
1114
1115 // ------------------------------------------------------------------
1116 // ciMethod::has_compiled_code
1117 bool ciMethod::has_compiled_code() {
1118 return inline_instructions_size() > 0;
1119 }
1120
1121 int ciMethod::highest_osr_comp_level() {
1122 check_is_loaded();
1123 VM_ENTRY_MARK;
1124 return get_Method()->highest_osr_comp_level();
1125 }
1126
1127 // ------------------------------------------------------------------
1128 // ciMethod::code_size_for_inlining
1129 //
1130 // Code size for inlining decisions. This method returns a code
1131 // size of 1 for methods which has the ForceInline annotation.
1132 int ciMethod::code_size_for_inlining() {
1133 check_is_loaded();
1134 if (get_Method()->force_inline()) {
1135 return 1;
1136 }
1137 return code_size();
1138 }
1139
1140 // ------------------------------------------------------------------
1141 // ciMethod::inline_instructions_size
1142 //
1143 // This is a rough metric for "fat" methods, compared before inlining
1144 // with InlineSmallCode. The CodeBlob::code_size accessor includes
1145 // junk like exception handler, stubs, and constant table, which are
1146 // not highly relevant to an inlined method. So we use the more
1147 // specific accessor nmethod::insts_size.
1148 // Also some instructions inside the code are excluded from inline
1149 // heuristic (e.g. post call nop instructions; see InlineSkippedInstructionsCounter)
1150 int ciMethod::inline_instructions_size() {
1151 if (_inline_instructions_size == -1) {
1152 GUARDED_VM_ENTRY(
1153 nmethod* code = get_Method()->code();
1154 if (code != nullptr && (code->comp_level() == CompLevel_full_optimization)) {
1155 int isize = code->insts_end() - code->verified_entry_point() - code->skipped_instructions_size();
1156 _inline_instructions_size = isize > 0 ? isize : 0;
1157 } else {
1158 _inline_instructions_size = 0;
1159 }
1160 );
1161 }
1162 return _inline_instructions_size;
1163 }
1164
1165 // ------------------------------------------------------------------
1166 // ciMethod::log_nmethod_identity
1167 void ciMethod::log_nmethod_identity(xmlStream* log) {
1168 GUARDED_VM_ENTRY(
1169 nmethod* code = get_Method()->code();
1170 if (code != nullptr) {
1171 code->log_identity(log);
1172 }
1173 )
1174 }
1175
1176 // ------------------------------------------------------------------
1177 // ciMethod::is_not_reached
1178 bool ciMethod::is_not_reached(int bci) {
1179 check_is_loaded();
1180 VM_ENTRY_MARK;
1181 return Interpreter::is_not_reached(
1182 methodHandle(THREAD, get_Method()), bci);
1183 }
1184
1185 // ------------------------------------------------------------------
1186 // ciMethod::was_never_executed
1187 bool ciMethod::was_executed_more_than(int times) {
1188 VM_ENTRY_MARK;
1189 return get_Method()->was_executed_more_than(times);
1190 }
1191
1192 // ------------------------------------------------------------------
1193 // ciMethod::has_unloaded_classes_in_signature
1194 bool ciMethod::has_unloaded_classes_in_signature() {
1195 // ciSignature is resolved against some accessing class and
1196 // signature classes aren't required to be local. As a benefit,
1197 // it makes signature classes visible through loader constraints.
1198 // So, encountering an unloaded class signals it is absent both in
1199 // the callee (local) and caller contexts.
1200 return signature()->has_unloaded_classes();
1201 }
1202
1203 // ------------------------------------------------------------------
1204 // ciMethod::is_klass_loaded
1205 bool ciMethod::is_klass_loaded(int refinfo_index, Bytecodes::Code bc, bool must_be_resolved) const {
1206 VM_ENTRY_MARK;
1207 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/ciReplay.hpp"
33 #include "ci/ciStreams.hpp"
34 #include "ci/ciSymbol.hpp"
35 #include "ci/ciSymbols.hpp"
36 #include "ci/ciUtilities.inline.hpp"
37 #include "compiler/abstractCompiler.hpp"
38 #include "compiler/compilerDefinitions.inline.hpp"
39 #include "compiler/compilerOracle.hpp"
40 #include "compiler/compileTask.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;
1007 bool ciMethod::is_scoped() const {
1008 return get_Method()->is_scoped();
1009 }
1010
1011 // ------------------------------------------------------------------
1012 // ciMethod::has_member_arg
1013 //
1014 // Return true if the method is a linker intrinsic like _linkToVirtual.
1015 // These are built by the JVM.
1016 bool ciMethod::has_member_arg() const {
1017 vmIntrinsics::ID iid = _intrinsic_id; // do not check if loaded
1018 return (MethodHandles::is_signature_polymorphic(iid) &&
1019 MethodHandles::has_member_arg(iid));
1020 }
1021
1022 // ------------------------------------------------------------------
1023 // ciMethod::ensure_method_data
1024 //
1025 // Generate new MethodData* objects at compile time.
1026 // Return true if allocation was successful or no MDO is required.
1027 bool ciMethod::ensure_method_data(const methodHandle& h_m, bool training_data_only) {
1028 EXCEPTION_CONTEXT;
1029 if (is_native() || is_abstract() || h_m()->is_accessor()) {
1030 return true;
1031 }
1032 if (h_m()->method_data() == nullptr) {
1033 if (training_data_only) {
1034 Method::install_training_method_data(h_m);
1035 } else {
1036 Method::build_profiling_method_data(h_m, THREAD);
1037 if (HAS_PENDING_EXCEPTION) {
1038 CLEAR_PENDING_EXCEPTION;
1039 }
1040 }
1041 }
1042 if (h_m()->method_data() != nullptr) {
1043 _method_data = CURRENT_ENV->get_method_data(h_m()->method_data());
1044 return _method_data->load_data();
1045 } else {
1046 _method_data = CURRENT_ENV->get_empty_methodData();
1047 return false;
1048 }
1049 }
1050
1051 // public, retroactive version
1052 bool ciMethod::ensure_method_data(bool training_data_only) {
1053 bool result = true;
1054 if (_method_data == nullptr || _method_data->is_empty()) {
1055 GUARDED_VM_ENTRY({
1056 methodHandle mh(Thread::current(), get_Method());
1057 result = ensure_method_data(mh, training_data_only);
1058 });
1059 }
1060 return result;
1061 }
1062
1063
1064 // ------------------------------------------------------------------
1065 // ciMethod::method_data
1066 //
1067 ciMethodData* ciMethod::method_data() {
1068 if (CURRENT_ENV->task()->is_precompiled() && CURRENT_ENV->task()->comp_level() == CompLevel_full_optimization) {
1069 if (_method_data_recorded == nullptr) {
1070 VM_ENTRY_MARK;
1071 methodHandle h_m(thread, get_Method());
1072 MethodTrainingData* mtd = MethodTrainingData::find(h_m);
1073 MethodData* mdo = (mtd != nullptr ? mtd->final_profile() : nullptr);
1074 DirectiveSet* directives = DirectivesStack::getMatchingDirective(h_m, CURRENT_ENV->task()->compiler());
1075 if (mdo == nullptr || directives->IgnoreRecordedProfileOption) {
1076 if (directives->IgnoreRecordedProfileOption) {
1077 ResourceMark rm;
1078 log_debug(precompile)("Ignore recorded profile for %s", h_m->name_and_sig_as_C_string());
1079 } else {
1080 ResourceMark rm;
1081 log_debug(precompile)("No profile for %s", h_m->name_and_sig_as_C_string());
1082 }
1083 _method_data_recorded = CURRENT_ENV->get_empty_methodData();
1084 } else {
1085 #if INCLUDE_CDS
1086 if (mdo->extra_data_lock() == nullptr) {
1087 assert(!HAS_PENDING_EXCEPTION, "");
1088 mdo->restore_unshareable_info(thread);
1089 assert(!HAS_PENDING_EXCEPTION, "");
1090 }
1091 #endif
1092 _method_data_recorded = CURRENT_ENV->get_method_data(mdo);
1093 _method_data_recorded->load_data();
1094 {
1095 ResourceMark rm;
1096 log_debug(precompile)("Recorded profile " PTR_FORMAT " for %s", p2i(mdo), h_m->name_and_sig_as_C_string());
1097 }
1098 }
1099 }
1100 assert(_method_data_recorded != nullptr, "");
1101 return _method_data_recorded;
1102 } else {
1103 if (_method_data != nullptr) {
1104 return _method_data;
1105 }
1106 VM_ENTRY_MARK;
1107 methodHandle h_m(thread, get_Method());
1108 MethodData* mdo = h_m()->method_data();
1109 if (mdo != nullptr) {
1110 _method_data = CURRENT_ENV->get_method_data(mdo);
1111 _method_data->load_data();
1112 } else {
1113 _method_data = CURRENT_ENV->get_empty_methodData();
1114 }
1115 return _method_data;
1116 }
1117 }
1118
1119 // ------------------------------------------------------------------
1120 // ciMethod::method_data_or_null
1121 // Returns a pointer to ciMethodData if MDO exists on the VM side,
1122 // null otherwise.
1123 ciMethodData* ciMethod::method_data_or_null() {
1124 ciMethodData *md = method_data();
1125 if (md->is_empty()) {
1126 return nullptr;
1127 }
1128 return md;
1129 }
1130
1131 // ------------------------------------------------------------------
1132 // ciMethod::ensure_method_counters
1133 //
1134 MethodCounters* ciMethod::ensure_method_counters() {
1135 check_is_loaded();
1136 VM_ENTRY_MARK;
1151
1152 // ------------------------------------------------------------------
1153 // ciMethod::has_option_value
1154 //
1155 bool ciMethod::has_option_value(CompileCommandEnum option, double& value) {
1156 check_is_loaded();
1157 VM_ENTRY_MARK;
1158 methodHandle mh(THREAD, get_Method());
1159 return CompilerOracle::has_option_value(mh, option, value);
1160 }
1161 // ------------------------------------------------------------------
1162 // ciMethod::can_be_compiled
1163 //
1164 // Have previous compilations of this method succeeded?
1165 bool ciMethod::can_be_compiled() {
1166 check_is_loaded();
1167 ciEnv* env = CURRENT_ENV;
1168 if (is_c1_compile(env->comp_level())) {
1169 return _is_c1_compilable;
1170 }
1171
1172 #if INCLUDE_JVMCI
1173 if (EnableJVMCI && UseJVMCICompiler &&
1174 env->comp_level() == CompLevel_full_optimization && !AOTLinkedClassBulkLoader::class_preloading_finished()) {
1175 return false;
1176 }
1177 #endif
1178 return _is_c2_compilable;
1179 }
1180
1181 // ------------------------------------------------------------------
1182 // ciMethod::has_compiled_code
1183 bool ciMethod::has_compiled_code() {
1184 return inline_instructions_size() > 0;
1185 }
1186
1187 int ciMethod::highest_osr_comp_level() {
1188 check_is_loaded();
1189 VM_ENTRY_MARK;
1190 return get_Method()->highest_osr_comp_level();
1191 }
1192
1193 // ------------------------------------------------------------------
1194 // ciMethod::code_size_for_inlining
1195 //
1196 // Code size for inlining decisions. This method returns a code
1197 // size of 1 for methods which has the ForceInline annotation.
1198 int ciMethod::code_size_for_inlining() {
1199 check_is_loaded();
1200 if (get_Method()->force_inline()) {
1201 return 1;
1202 }
1203 return code_size();
1204 }
1205
1206 // ------------------------------------------------------------------
1207 // ciMethod::inline_instructions_size
1208 //
1209 // This is a rough metric for "fat" methods, compared before inlining
1210 // with InlineSmallCode. The CodeBlob::code_size accessor includes
1211 // junk like exception handler, stubs, and constant table, which are
1212 // not highly relevant to an inlined method. So we use the more
1213 // specific accessor nmethod::insts_size.
1214 // Also some instructions inside the code are excluded from inline
1215 // heuristic (e.g. post call nop instructions; see InlineSkippedInstructionsCounter)
1216 int ciMethod::inline_instructions_size() {
1217 if (_inline_instructions_size == -1) {
1218 if (TrainingData::have_data()) {
1219 GUARDED_VM_ENTRY(
1220 CompLevel level = static_cast<CompLevel>(CURRENT_ENV->comp_level());
1221 methodHandle top_level_mh(Thread::current(), CURRENT_ENV->task()->method());
1222 MethodTrainingData* mtd = MethodTrainingData::find(top_level_mh);
1223 if (mtd != nullptr) {
1224 CompileTrainingData* ctd = mtd->last_toplevel_compile(level);
1225 if (ctd != nullptr) {
1226 methodHandle mh(Thread::current(), get_Method());
1227 MethodTrainingData* this_mtd = MethodTrainingData::find(mh);
1228 if (this_mtd != nullptr) {
1229 auto r = ctd->ci_records().ciMethod__inline_instructions_size.find(this_mtd);
1230 if (r.is_valid()) {
1231 _inline_instructions_size = r.result();
1232 }
1233 }
1234 }
1235 }
1236 );
1237 }
1238 }
1239 if (_inline_instructions_size == -1) {
1240 GUARDED_VM_ENTRY(
1241 nmethod* code = get_Method()->code();
1242 if (code != nullptr && !code->is_aot() && (code->comp_level() == CompLevel_full_optimization)) {
1243 int isize = code->insts_end() - code->verified_entry_point() - code->skipped_instructions_size();
1244 _inline_instructions_size = isize > 0 ? isize : 0;
1245 } else {
1246 _inline_instructions_size = 0;
1247 }
1248 if (TrainingData::need_data()) {
1249 CompileTrainingData* ctd = CURRENT_ENV->task()->training_data();
1250 if (ctd != nullptr) {
1251 methodHandle mh(Thread::current(), get_Method());
1252 MethodTrainingData* this_mtd = MethodTrainingData::make(mh);
1253 ctd->ci_records().ciMethod__inline_instructions_size.append_if_missing(_inline_instructions_size, this_mtd);
1254 }
1255 }
1256 );
1257 }
1258 return _inline_instructions_size;
1259 }
1260
1261 // ------------------------------------------------------------------
1262 // ciMethod::log_nmethod_identity
1263 void ciMethod::log_nmethod_identity(xmlStream* log) {
1264 GUARDED_VM_ENTRY(
1265 nmethod* code = get_Method()->code();
1266 if (code != nullptr) {
1267 code->log_identity(log);
1268 }
1269 )
1270 }
1271
1272 // ------------------------------------------------------------------
1273 // ciMethod::is_not_reached
1274 bool ciMethod::is_not_reached(int bci) {
1275 check_is_loaded();
1276 VM_ENTRY_MARK;
1277 return Interpreter::is_not_reached(
1278 methodHandle(THREAD, get_Method()), bci);
1279 }
1280
1281 // ------------------------------------------------------------------
1282 // ciMethod::was_never_executed
1283 bool ciMethod::was_executed_more_than(int times) {
1284 // Invocation counter is reset when the Method* is compiled.
1285 // If the method has compiled code we therefore assume it has
1286 // be executed more than n times.
1287 if (is_accessor() || is_empty() || has_compiled_code()) {
1288 // interpreter doesn't bump invocation counter of trivial methods
1289 // compiler does not bump invocation counter of compiled methods
1290 return true;
1291 }
1292 if (!method_data()->is_empty()) {
1293 return (method_data()->invocation_count() > times);
1294 }
1295 VM_ENTRY_MARK;
1296 return get_Method()->was_executed_more_than(times);
1297 }
1298
1299 // ------------------------------------------------------------------
1300 // ciMethod::has_unloaded_classes_in_signature
1301 bool ciMethod::has_unloaded_classes_in_signature() {
1302 // ciSignature is resolved against some accessing class and
1303 // signature classes aren't required to be local. As a benefit,
1304 // it makes signature classes visible through loader constraints.
1305 // So, encountering an unloaded class signals it is absent both in
1306 // the callee (local) and caller contexts.
1307 return signature()->has_unloaded_classes();
1308 }
1309
1310 // ------------------------------------------------------------------
1311 // ciMethod::is_klass_loaded
1312 bool ciMethod::is_klass_loaded(int refinfo_index, Bytecodes::Code bc, bool must_be_resolved) const {
1313 VM_ENTRY_MARK;
1314 return get_Method()->is_klass_loaded(refinfo_index, bc, must_be_resolved);
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