1 /* 2 * Copyright (c) 2012, 2020, 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_JFR_SUPPORT_JFRTHREADLOCAL_HPP 26 #define SHARE_JFR_SUPPORT_JFRTHREADLOCAL_HPP 27 28 #include "jfr/utilities/jfrBlob.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 JfrBuffer* _load_barrier_buffer_epoch_0; 43 JfrBuffer* _load_barrier_buffer_epoch_1; 44 mutable JfrStackFrame* _stackframes; 45 mutable traceid _trace_id; 46 JfrBlobHandle _thread; 47 u8 _data_lost; 48 traceid _stack_trace_id; 49 jlong _user_time; 50 jlong _cpu_time; 51 jlong _wallclock_time; 52 unsigned int _stack_trace_hash; 53 mutable u4 _stackdepth; 54 volatile jint _entering_suspend_flag; 55 bool _excluded; 56 bool _dead; 57 traceid _parent_trace_id; 58 59 JfrBuffer* install_native_buffer() const; 60 JfrBuffer* install_java_buffer() const; 61 JfrStackFrame* install_stackframes() const; 62 void release(Thread* t); 63 static void release(JfrThreadLocal* tl, Thread* t); 64 65 public: 66 JfrThreadLocal(); 67 native_buffer() const68 JfrBuffer* native_buffer() const { 69 return _native_buffer != NULL ? _native_buffer : install_native_buffer(); 70 } 71 has_native_buffer() const72 bool has_native_buffer() const { 73 return _native_buffer != NULL; 74 } 75 set_native_buffer(JfrBuffer * buffer)76 void set_native_buffer(JfrBuffer* buffer) { 77 _native_buffer = buffer; 78 } 79 java_buffer() const80 JfrBuffer* java_buffer() const { 81 return _java_buffer != NULL ? _java_buffer : install_java_buffer(); 82 } 83 has_java_buffer() const84 bool has_java_buffer() const { 85 return _java_buffer != NULL; 86 } 87 set_java_buffer(JfrBuffer * buffer)88 void set_java_buffer(JfrBuffer* buffer) { 89 _java_buffer = buffer; 90 } 91 shelved_buffer() const92 JfrBuffer* shelved_buffer() const { 93 return _shelved_buffer; 94 } 95 shelve_buffer(JfrBuffer * buffer)96 void shelve_buffer(JfrBuffer* buffer) { 97 _shelved_buffer = buffer; 98 } 99 has_java_event_writer() const100 bool has_java_event_writer() const { 101 return _java_event_writer != NULL; 102 } 103 java_event_writer()104 jobject java_event_writer() { 105 return _java_event_writer; 106 } 107 set_java_event_writer(jobject java_event_writer)108 void set_java_event_writer(jobject java_event_writer) { 109 _java_event_writer = java_event_writer; 110 } 111 stackframes() const112 JfrStackFrame* stackframes() const { 113 return _stackframes != NULL ? _stackframes : install_stackframes(); 114 } 115 set_stackframes(JfrStackFrame * frames)116 void set_stackframes(JfrStackFrame* frames) { 117 _stackframes = frames; 118 } 119 120 u4 stackdepth() const; 121 set_stackdepth(u4 depth)122 void set_stackdepth(u4 depth) { 123 _stackdepth = depth; 124 } 125 thread_id() const126 traceid thread_id() const { 127 return _trace_id; 128 } 129 set_thread_id(traceid thread_id)130 void set_thread_id(traceid thread_id) { 131 _trace_id = thread_id; 132 } 133 parent_thread_id() const134 traceid parent_thread_id() const { 135 return _parent_trace_id; 136 } 137 set_cached_stack_trace_id(traceid id,unsigned int hash=0)138 void set_cached_stack_trace_id(traceid id, unsigned int hash = 0) { 139 _stack_trace_id = id; 140 _stack_trace_hash = hash; 141 } 142 has_cached_stack_trace() const143 bool has_cached_stack_trace() const { 144 return _stack_trace_id != max_julong; 145 } 146 clear_cached_stack_trace()147 void clear_cached_stack_trace() { 148 _stack_trace_id = max_julong; 149 _stack_trace_hash = 0; 150 } 151 cached_stack_trace_id() const152 traceid cached_stack_trace_id() const { 153 return _stack_trace_id; 154 } 155 cached_stack_trace_hash() const156 unsigned int cached_stack_trace_hash() const { 157 return _stack_trace_hash; 158 } 159 set_trace_block()160 void set_trace_block() { 161 _entering_suspend_flag = 1; 162 } 163 clear_trace_block()164 void clear_trace_block() { 165 _entering_suspend_flag = 0; 166 } 167 is_trace_block() const168 bool is_trace_block() const { 169 return _entering_suspend_flag != 0; 170 } 171 data_lost() const172 u8 data_lost() const { 173 return _data_lost; 174 } 175 176 u8 add_data_lost(u8 value); 177 get_user_time() const178 jlong get_user_time() const { 179 return _user_time; 180 } 181 set_user_time(jlong user_time)182 void set_user_time(jlong user_time) { 183 _user_time = user_time; 184 } 185 get_cpu_time() const186 jlong get_cpu_time() const { 187 return _cpu_time; 188 } 189 set_cpu_time(jlong cpu_time)190 void set_cpu_time(jlong cpu_time) { 191 _cpu_time = cpu_time; 192 } 193 get_wallclock_time() const194 jlong get_wallclock_time() const { 195 return _wallclock_time; 196 } 197 set_wallclock_time(jlong wallclock_time)198 void set_wallclock_time(jlong wallclock_time) { 199 _wallclock_time = wallclock_time; 200 } 201 trace_id() const202 traceid trace_id() const { 203 return _trace_id; 204 } 205 trace_id_addr() const206 traceid* const trace_id_addr() const { 207 return &_trace_id; 208 } 209 set_trace_id(traceid id) const210 void set_trace_id(traceid id) const { 211 _trace_id = id; 212 } 213 is_excluded() const214 bool is_excluded() const { 215 return _excluded; 216 } 217 is_dead() const218 bool is_dead() const { 219 return _dead; 220 } 221 222 bool has_thread_blob() const; 223 void set_thread_blob(const JfrBlobHandle& handle); 224 const JfrBlobHandle& thread_blob() const; 225 226 static void exclude(Thread* t); 227 static void include(Thread* t); 228 229 static void on_start(Thread* t); 230 static void on_exit(Thread* t); 231 232 // Code generation 233 static ByteSize trace_id_offset(); 234 static ByteSize java_event_writer_offset(); 235 236 template <typename> 237 friend class JfrEpochQueueKlassPolicy; 238 }; 239 240 #endif // SHARE_JFR_SUPPORT_JFRTHREADLOCAL_HPP 241