1 /* 2 * Copyright (c) 2012, 2018, 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_VM_JFR_SUPPORT_JFRTHREADLOCAL_HPP 26 #define SHARE_VM_JFR_SUPPORT_JFRTHREADLOCAL_HPP 27 28 #include "jfr/recorder/checkpoint/jfrCheckpointBlob.hpp" 29 #include "jfr/utilities/jfrTypes.hpp" 30 31 class JavaThread; 32 class JfrBuffer; 33 class JfrStackFrame; 34 class Thread; 35 36 class JfrThreadLocal { 37 private: 38 jobject _java_event_writer; 39 mutable JfrBuffer* _java_buffer; 40 mutable JfrBuffer* _native_buffer; 41 JfrBuffer* _shelved_buffer; 42 mutable JfrStackFrame* _stackframes; 43 mutable traceid _trace_id; 44 JfrCheckpointBlobHandle _thread_cp; 45 u8 _data_lost; 46 traceid _stack_trace_id; 47 jlong _user_time; 48 jlong _cpu_time; 49 jlong _wallclock_time; 50 unsigned int _stack_trace_hash; 51 mutable u4 _stackdepth; 52 volatile jint _entering_suspend_flag; 53 bool _dead; 54 55 JfrBuffer* install_native_buffer() const; 56 JfrBuffer* install_java_buffer() const; 57 JfrStackFrame* install_stackframes() const; 58 59 static void release(JfrThreadLocal* tl, Thread* t); 60 61 public: 62 JfrThreadLocal(); 63 64 JfrBuffer* native_buffer() const { 65 return _native_buffer != NULL ? _native_buffer : install_native_buffer(); 66 } 67 68 bool has_native_buffer() const { 69 return _native_buffer != NULL; 70 } 71 72 void set_native_buffer(JfrBuffer* buffer) { 73 _native_buffer = buffer; 74 } 75 76 JfrBuffer* java_buffer() const { 77 return _java_buffer != NULL ? _java_buffer : install_java_buffer(); 78 } 79 80 bool has_java_buffer() const { 81 return _java_buffer != NULL; 82 } 83 84 void set_java_buffer(JfrBuffer* buffer) { 85 _java_buffer = buffer; 86 } 87 88 JfrBuffer* shelved_buffer() const { 89 return _shelved_buffer; 90 } 91 92 void shelve_buffer(JfrBuffer* buffer) { 93 _shelved_buffer = buffer; 94 } 95 96 bool has_java_event_writer() const { 97 return _java_event_writer != NULL; 98 } 99 100 jobject java_event_writer() { 101 return _java_event_writer; 102 } 103 104 void set_java_event_writer(jobject java_event_writer) { 105 _java_event_writer = java_event_writer; 106 } 107 108 JfrStackFrame* stackframes() const { 109 return _stackframes != NULL ? _stackframes : install_stackframes(); 110 } 111 112 void set_stackframes(JfrStackFrame* frames) { 113 _stackframes = frames; 114 } 115 116 u4 stackdepth() const; 117 118 void set_stackdepth(u4 depth) { 119 _stackdepth = depth; 120 } 121 122 traceid thread_id() const { 123 return _trace_id; 124 } 125 126 void set_thread_id(traceid thread_id) { 127 _trace_id = thread_id; 128 } 129 130 void set_cached_stack_trace_id(traceid id, unsigned int hash = 0) { 131 _stack_trace_id = id; 132 _stack_trace_hash = hash; 133 } 134 135 bool has_cached_stack_trace() const { 136 return _stack_trace_id != max_julong; 137 } 138 139 void clear_cached_stack_trace() { 140 _stack_trace_id = max_julong; 141 _stack_trace_hash = 0; 142 } 143 144 traceid cached_stack_trace_id() const { 145 return _stack_trace_id; 146 } 147 148 unsigned int cached_stack_trace_hash() const { 149 return _stack_trace_hash; 150 } 151 152 void set_trace_block() { 153 _entering_suspend_flag = 1; 154 } 155 156 void clear_trace_block() { 157 _entering_suspend_flag = 0; 158 } 159 160 bool is_trace_block() const { 161 return _entering_suspend_flag != 0; 162 } 163 164 u8 data_lost() const { 165 return _data_lost; 166 } 167 168 u8 add_data_lost(u8 value); 169 170 jlong get_user_time() const { 171 return _user_time; 172 } 173 174 void set_user_time(jlong user_time) { 175 _user_time = user_time; 176 } 177 178 jlong get_cpu_time() const { 179 return _cpu_time; 180 } 181 182 void set_cpu_time(jlong cpu_time) { 183 _cpu_time = cpu_time; 184 } 185 186 jlong get_wallclock_time() const { 187 return _wallclock_time; 188 } 189 190 void set_wallclock_time(jlong wallclock_time) { 191 _wallclock_time = wallclock_time; 192 } 193 194 traceid trace_id() const { 195 return _trace_id; 196 } 197 198 traceid* const trace_id_addr() const { 199 return &_trace_id; 200 } 201 202 void set_trace_id(traceid id) const { 203 _trace_id = id; 204 } 205 206 bool is_dead() const { 207 return _dead; 208 } 209 210 bool has_thread_checkpoint() const; 211 void set_thread_checkpoint(const JfrCheckpointBlobHandle& handle); 212 const JfrCheckpointBlobHandle& thread_checkpoint() const; 213 214 static void on_start(Thread* t); 215 static void on_exit(Thread* t); 216 217 // Code generation 218 static ByteSize trace_id_offset(); 219 static ByteSize java_event_writer_offset(); 220 }; 221 222 #endif // SHARE_VM_JFR_SUPPORT_JFRTHREADLOCAL_HPP