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