1 /*
2 * Copyright (c) 2013, 2024, 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 "precompiled.hpp"
26 #include "cds/cdsConfig.hpp"
27 #include "compiler/compiler_globals.hpp"
28 #include "compiler/compilerOracle.hpp"
29 #include "memory/metaspaceClosure.hpp"
30 #include "oops/method.hpp"
31 #include "oops/methodCounters.hpp"
32 #include "oops/trainingData.hpp"
33 #include "runtime/handles.inline.hpp"
34 #include "memory/resourceArea.hpp"
35
36 MethodCounters::MethodCounters(const methodHandle& mh) :
37 _method(mh()),
38 _method_training_data(nullptr),
39 _prev_time(0),
40 _rate(0),
41 _highest_comp_level(0),
42 _highest_osr_comp_level(0)
43 {
44 set_interpreter_throwout_count(0);
45 JVMTI_ONLY(clear_number_of_breakpoints());
46 invocation_counter()->init();
47 backedge_counter()->init();
48
49 // Set per-method thresholds.
50 double scale = 1.0;
51 CompilerOracle::has_option_value(mh, CompileCommandEnum::CompileThresholdScaling, scale);
52
53 _invoke_mask = right_n_bits(CompilerConfig::scaled_freq_log(Tier0InvokeNotifyFreqLog, scale)) << InvocationCounter::count_shift;
54 _backedge_mask = right_n_bits(CompilerConfig::scaled_freq_log(Tier0BackedgeNotifyFreqLog, scale)) << InvocationCounter::count_shift;
55 }
56
57 MethodCounters::MethodCounters() {
58 assert(CDSConfig::is_dumping_static_archive() || UseSharedSpaces, "only for CDS");
59 }
60
61 MethodCounters* MethodCounters::allocate_no_exception(const methodHandle& mh) {
62 ClassLoaderData* loader_data = mh->method_holder()->class_loader_data();
63 return new(loader_data, method_counters_size(), MetaspaceObj::MethodCountersType) MethodCounters(mh);
64 }
65
66 MethodCounters* MethodCounters::allocate_with_exception(const methodHandle& mh, TRAPS) {
67 ClassLoaderData* loader_data = mh->method_holder()->class_loader_data();
68 return new(loader_data, method_counters_size(), MetaspaceObj::MethodCountersType, THREAD) MethodCounters(mh);
69 }
70
71 void MethodCounters::clear_counters() {
72 invocation_counter()->reset();
73 backedge_counter()->reset();
74 set_interpreter_throwout_count(0);
75 set_prev_time(0);
76 set_prev_event_count(0);
77 set_rate(0);
78 set_highest_comp_level(0);
79 set_highest_osr_comp_level(0);
80 }
81
82 void MethodCounters::metaspace_pointers_do(MetaspaceClosure* it) {
83 log_trace(cds)("Iter(MethodCounters): %p", this);
84 it->push(&_method);
85 it->push(&_method_training_data);
86 }
87
88 #if INCLUDE_CDS
89 void MethodCounters::remove_unshareable_info() {
90 _method_training_data = nullptr;
91 }
92
93 void MethodCounters::restore_unshareable_info(TRAPS) {
94 }
95 #endif // INCLUDE_CDS
96
97 void MethodCounters::print_on(outputStream* st) const {
98 assert(is_methodCounters(), "should be method counters");
99 st->print("method counters");
100 print_data_on(st);
101 }
102
103 void MethodCounters::print_data_on(outputStream* st) const {
104 ResourceMark rm;
105 st->print_cr(" - invocation_counter: %d carry=%d", _invocation_counter.count(), _invocation_counter.carry());
106 st->print_cr(" - backedge_counter: %d carry=%d", _backedge_counter.count(), _backedge_counter.carry());
107 st->print_cr(" - prev_time: " JLONG_FORMAT, _prev_time);
108 st->print_cr(" - rate: %.3f", _rate);
109 st->print_cr(" - invoke_mask: %d", _invoke_mask);
110 st->print_cr(" - backedge_mask: %d", _backedge_mask);
111 st->print_cr(" - prev_event_count: %d", _prev_event_count);
112 #if COMPILER2_OR_JVMCI
113 st->print_cr(" - interpreter_throwout_count: %u", _interpreter_throwout_count);
114 #endif
115 #if INCLUDE_JVMTI
116 st->print_cr(" - number_of_breakpoints: %u", _number_of_breakpoints);
117 #endif
118 st->print_cr(" - highest_comp_level: %u", _highest_comp_level);
119 st->print_cr(" - highest_osr_comp_level: %u", _highest_osr_comp_level);
120 }
121
122 void MethodCounters::print_value_on(outputStream* st) const {
123 assert(is_methodCounters(), "must be methodCounters");
124 st->print("method counters");
125 print_address_on(st);
126 }
127
128