1 /*
2 * Copyright (c) 2018, 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 #ifndef SHARE_OOPS_METHOD_INLINE_HPP
26 #define SHARE_OOPS_METHOD_INLINE_HPP
27
28 #include "oops/method.hpp"
29
30 #include "classfile/vmIntrinsics.hpp"
31 #include "oops/methodCounters.hpp"
32 #include "runtime/atomic.hpp"
33
34 inline address Method::from_compiled_entry() const {
35 return Atomic::load_acquire(&_from_compiled_entry);
36 }
37
38 inline address Method::from_compiled_inline_ro_entry() const {
39 return Atomic::load_acquire(&_from_compiled_inline_ro_entry);
40 }
41
42 inline address Method::from_compiled_inline_entry() const {
43 return Atomic::load_acquire(&_from_compiled_inline_entry);
44 }
45
46 inline address Method::from_interpreted_entry() const {
47 return Atomic::load_acquire(&_from_interpreted_entry);
48 }
49
50 inline nmethod* Method::code() const {
51 assert( check_code(), "" );
52 return Atomic::load_acquire(&_code);
53 }
54
55 // Write (bci, line number) pair to stream
56 inline void CompressedLineNumberWriteStream::write_pair_regular(int bci_delta, int line_delta) {
57 // bci and line number does not compress into single byte.
58 // Write out escape character and use regular compression for bci and line number.
59 write_byte((jubyte)0xFF);
60 write_signed_int(bci_delta);
61 write_signed_int(line_delta);
62 }
63
64 inline void CompressedLineNumberWriteStream::write_pair_inline(int bci, int line) {
65 int bci_delta = bci - _bci;
66 int line_delta = line - _line;
67 _bci = bci;
68 _line = line;
69 // Skip (0,0) deltas - they do not add information and conflict with terminator.
70 if (bci_delta == 0 && line_delta == 0) return;
71 // Check if bci is 5-bit and line number 3-bit unsigned.
72 if (((bci_delta & ~0x1F) == 0) && ((line_delta & ~0x7) == 0)) {
73 // Compress into single byte.
74 jubyte value = (jubyte)((bci_delta << 3) | line_delta);
75 // Check that value doesn't match escape character.
76 if (value != 0xFF) {
77 write_byte(value);
78 return;
79 }
80 }
81 write_pair_regular(bci_delta, line_delta);
82 }
83
84 inline void CompressedLineNumberWriteStream::write_pair(int bci, int line) {
85 write_pair_inline(bci, line);
86 }
87
88 inline bool Method::has_compiled_code() const { return code() != nullptr; }
89
90 inline bool Method::is_empty_method() const {
91 return code_size() == 1
92 && *code_base() == Bytecodes::_return;
93 }
94
95 inline bool Method::is_continuation_enter_intrinsic() const {
96 return intrinsic_id() == vmIntrinsics::_Continuation_enterSpecial;
97 }
98
99 inline bool Method::is_continuation_yield_intrinsic() const {
100 return intrinsic_id() == vmIntrinsics::_Continuation_doYield;
101 }
102
103 inline bool Method::is_continuation_native_intrinsic() const {
104 return intrinsic_id() == vmIntrinsics::_Continuation_enterSpecial ||
105 intrinsic_id() == vmIntrinsics::_Continuation_doYield;
106 }
107
108 inline bool Method::is_special_native_intrinsic() const {
109 return is_method_handle_intrinsic() || is_continuation_native_intrinsic();
110 }
111
112 #if INCLUDE_JVMTI
113 inline u2 Method::number_of_breakpoints() const {
114 MethodCounters* mcs = method_counters();
115 if (mcs == nullptr) {
116 return 0;
117 } else {
118 return mcs->number_of_breakpoints();
119 }
120 }
121
122 inline void Method::incr_number_of_breakpoints(Thread* current) {
123 MethodCounters* mcs = get_method_counters(current);
124 if (mcs != nullptr) {
125 mcs->incr_number_of_breakpoints();
126 }
127 }
128
129 inline void Method::decr_number_of_breakpoints(Thread* current) {
130 MethodCounters* mcs = get_method_counters(current);
131 if (mcs != nullptr) {
132 mcs->decr_number_of_breakpoints();
133 }
134 }
135
136 // Initialization only
137 inline void Method::clear_number_of_breakpoints() {
138 MethodCounters* mcs = method_counters();
139 if (mcs != nullptr) {
140 mcs->clear_number_of_breakpoints();
141 }
142 }
143 #endif // INCLUDE_JVMTI
144
145 #if COMPILER2_OR_JVMCI
146 inline void Method::interpreter_throwout_increment(Thread* current) {
147 MethodCounters* mcs = get_method_counters(current);
148 if (mcs != nullptr) {
149 mcs->interpreter_throwout_increment();
150 }
151 }
152 #endif
153
154 inline int Method::interpreter_throwout_count() const {
155 MethodCounters* mcs = method_counters();
156 if (mcs == nullptr) {
157 return 0;
158 } else {
159 return mcs->interpreter_throwout_count();
160 }
161 }
162
163 inline int Method::prev_event_count() const {
164 MethodCounters* mcs = method_counters();
165 return mcs == nullptr ? 0 : mcs->prev_event_count();
166 }
167
168 inline void Method::set_prev_event_count(int count) {
169 MethodCounters* mcs = method_counters();
170 if (mcs != nullptr) {
171 mcs->set_prev_event_count(count);
172 }
173 }
174
175 inline jlong Method::prev_time() const {
176 MethodCounters* mcs = method_counters();
177 return mcs == nullptr ? 0 : mcs->prev_time();
178 }
179
180 inline void Method::set_prev_time(jlong time) {
181 MethodCounters* mcs = method_counters();
182 if (mcs != nullptr) {
183 mcs->set_prev_time(time);
184 }
185 }
186
187 inline float Method::rate() const {
188 MethodCounters* mcs = method_counters();
189 return mcs == nullptr ? 0 : mcs->rate();
190 }
191
192 inline void Method::set_rate(float rate) {
193 MethodCounters* mcs = method_counters();
194 if (mcs != nullptr) {
195 mcs->set_rate(rate);
196 }
197 }
198
199 #endif // SHARE_OOPS_METHOD_INLINE_HPP