1 /*
2 * Copyright (c) 2013, 2025, 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 */
24
25 #include "cds/cdsConfig.hpp"
26 #include "code/aotCodeCache.hpp"
27 #include "compiler/compiler_globals.hpp"
28 #include "compiler/compilerOracle.hpp"
29 #include "memory/metaspaceClosure.hpp"
30 #include "memory/resourceArea.hpp"
31 #include "oops/method.hpp"
32 #include "oops/methodCounters.hpp"
33 #include "oops/trainingData.hpp"
34 #include "runtime/handles.inline.hpp"
35
36 MethodCounters::MethodCounters(const methodHandle& mh) :
37 _method(mh()),
38 _method_training_data(method_training_data_sentinel()),
39 _prev_time(0),
40 _rate(0),
41 _highest_comp_level(0),
42 _highest_osr_comp_level(0)
43 {
44 #if INCLUDE_CDS
45 set_aot_code_invocation_count(0);
46 set_aot_preload_code_entry(nullptr);
47 #endif
48 set_interpreter_throwout_count(0);
49 JVMTI_ONLY(clear_number_of_breakpoints());
50 invocation_counter()->init();
51 backedge_counter()->init();
52
53 // Set per-method thresholds.
54 double scale = 1.0;
55 CompilerOracle::has_option_value(mh, CompileCommandEnum::CompileThresholdScaling, scale);
56
57 _invoke_mask = right_n_bits(CompilerConfig::scaled_freq_log(Tier0InvokeNotifyFreqLog, scale)) << InvocationCounter::count_shift;
58 _backedge_mask = right_n_bits(CompilerConfig::scaled_freq_log(Tier0BackedgeNotifyFreqLog, scale)) << InvocationCounter::count_shift;
59 }
60
61 #if INCLUDE_CDS
62 MethodCounters::MethodCounters() {
63 // Used by cppVtables.cpp only
64 assert(CDSConfig::is_dumping_static_archive() || UseSharedSpaces, "only for CDS");
65 }
66 #endif
67
68 MethodCounters* MethodCounters::allocate_no_exception(const methodHandle& mh) {
69 ClassLoaderData* loader_data = mh->method_holder()->class_loader_data();
70 return new(loader_data, method_counters_size(), MetaspaceObj::MethodCountersType) MethodCounters(mh);
71 }
72
73 MethodCounters* MethodCounters::allocate_with_exception(const methodHandle& mh, TRAPS) {
74 ClassLoaderData* loader_data = mh->method_holder()->class_loader_data();
75 return new(loader_data, method_counters_size(), MetaspaceObj::MethodCountersType, THREAD) MethodCounters(mh);
76 }
77
78 void MethodCounters::clear_counters() {
79 invocation_counter()->reset();
80 backedge_counter()->reset();
81 #if INCLUDE_CDS
82 set_aot_code_invocation_count(0);
83 if (aot_preload_code_entry() != nullptr) {
84 AOTCodeCache::invalidate(aot_preload_code_entry());
85 set_aot_preload_code_entry(nullptr);
86 }
87 #endif
88 set_interpreter_throwout_count(0);
89 set_prev_time(0);
90 set_prev_event_count(0);
91 set_rate(0);
92 set_highest_comp_level(0);
93 set_highest_osr_comp_level(0);
94 }
95
96 #if INCLUDE_CDS
97 void MethodCounters::deallocate_contents(ClassLoaderData* loader_data) {
98 if (aot_preload_code_entry() != nullptr) {
99 AOTCodeCache::invalidate(aot_preload_code_entry());
100 set_aot_preload_code_entry(nullptr);
101 }
102 }
103 #endif
104
105 void MethodCounters::metaspace_pointers_do(MetaspaceClosure* it) {
106 log_trace(aot, training)("Iter(MethodCounters): %p", this);
107 it->push(&_method);
108 it->push(&_method_training_data);
109 }
110
111 #if INCLUDE_CDS
112 void MethodCounters::set_aot_preload_code_entry(AOTCodeEntry* entry) {
113 precond(entry == nullptr || entry->for_preload());
114 _aot_preload_code_entry = entry;
115 }
116
117 void MethodCounters::remove_unshareable_info() {
118 }
119 void MethodCounters::restore_unshareable_info(TRAPS) {
120 _method_training_data = method_training_data_sentinel();
121 }
122 #endif // INCLUDE_CDS
123
124 void MethodCounters::print_on(outputStream* st) const {
125 assert(is_methodCounters(), "should be method counters");
126 st->print("method counters");
127 print_data_on(st);
128 }
129
130 void MethodCounters::print_data_on(outputStream* st) const {
131 ResourceMark rm;
132 st->print_cr(" - invocation_counter: %d carry=%d", _invocation_counter.count(), _invocation_counter.carry());
133 st->print_cr(" - backedge_counter: %d carry=%d", _backedge_counter.count(), _backedge_counter.carry());
134 st->print_cr(" - prev_time: " JLONG_FORMAT, _prev_time);
135 st->print_cr(" - rate: %.3f", _rate);
136 st->print_cr(" - invoke_mask: %d", _invoke_mask);
137 st->print_cr(" - backedge_mask: %d", _backedge_mask);
138 st->print_cr(" - prev_event_count: %d", _prev_event_count);
139 #if COMPILER2_OR_JVMCI
140 st->print_cr(" - interpreter_throwout_count: %u", _interpreter_throwout_count);
141 #endif
142 #if INCLUDE_JVMTI
143 st->print_cr(" - number_of_breakpoints: %u", _number_of_breakpoints);
144 #endif
145 st->print_cr(" - highest_comp_level: %u", _highest_comp_level);
146 st->print_cr(" - highest_osr_comp_level: %u", _highest_osr_comp_level);
147 }
148
149 void MethodCounters::print_value_on(outputStream* st) const {
150 assert(is_methodCounters(), "must be methodCounters");
151 st->print("method counters");
152 print_address_on(st);
153 }
154
155