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1 /* |
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2 * Copyright (c) 2011, 2018, Oracle and/or its affiliates. All rights reserved. |
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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4 * |
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5 * This code is free software; you can redistribute it and/or modify it |
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6 * under the terms of the GNU General Public License version 2 only, as |
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7 * published by the Free Software Foundation. |
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8 * |
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9 * This code is distributed in the hope that it will be useful, but WITHOUT |
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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12 * version 2 for more details (a copy is included in the LICENSE file that |
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13 * accompanied this code). |
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14 * |
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15 * You should have received a copy of the GNU General Public License version |
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16 * 2 along with this work; if not, write to the Free Software Foundation, |
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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18 * |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
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22 * |
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23 */ |
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24 |
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25 #ifndef SHARE_VM_JFR_RECORDER_STACKTRACE_JFRSTACKTRACEREPOSITORY_HPP |
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26 #define SHARE_VM_JFR_RECORDER_STACKTRACE_JFRSTACKTRACEREPOSITORY_HPP |
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27 |
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28 #include "jfr/utilities/jfrAllocation.hpp" |
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29 #include "jfr/utilities/jfrTypes.hpp" |
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30 |
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31 class frame; |
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32 class JavaThread; |
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33 class JfrCheckpointSystem; |
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34 class JfrCheckpointWriter; |
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35 class JfrChunkWriter; |
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36 class Method; |
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37 |
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38 class JfrStackFrame { |
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39 private: |
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40 const Method* _method; |
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41 traceid _methodid; |
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42 int _line; |
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43 int _bci; |
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44 u1 _type; |
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45 |
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46 public: |
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47 enum { |
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48 FRAME_INTERPRETER = 0, |
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49 FRAME_JIT, |
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50 FRAME_INLINE, |
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51 FRAME_NATIVE, |
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52 NUM_FRAME_TYPES |
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53 }; |
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54 |
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55 JfrStackFrame(const traceid& id, int bci, int type, const Method* method) : |
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56 _method(method), _methodid(id), _line(0), _bci(bci), _type(type) {} |
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57 JfrStackFrame(const traceid& id, int bci, int type, int lineno) : |
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58 _method(NULL), _methodid(id), _line(0), _bci(bci), _type(type) {} |
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59 bool equals(const JfrStackFrame& rhs) const; |
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60 void write(JfrChunkWriter& cw) const; |
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61 void write(JfrCheckpointWriter& cpw) const; |
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62 void resolve_lineno(); |
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63 }; |
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64 |
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65 class JfrStackTrace : public StackObj { |
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66 friend class JfrStackTraceRepository; |
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67 private: |
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68 JfrStackFrame* _frames; |
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69 traceid _id; |
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70 u4 _nr_of_frames; |
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71 unsigned int _hash; |
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72 const u4 _max_frames; |
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73 bool _reached_root; |
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74 bool _lineno; |
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75 |
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76 public: |
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77 JfrStackTrace(JfrStackFrame* frames, u4 max_frames) : _frames(frames), |
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78 _id(0), |
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79 _nr_of_frames(0), |
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80 _hash(0), |
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81 _reached_root(false), |
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82 _max_frames(max_frames), |
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83 _lineno(false) {} |
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84 bool record_thread(JavaThread& thread, frame& frame); |
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85 bool record_safe(JavaThread* thread, int skip, bool leakp = false); |
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86 void resolve_linenos(); |
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87 void set_nr_of_frames(u4 nr_of_frames) { _nr_of_frames = nr_of_frames; } |
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88 void set_hash(unsigned int hash) { _hash = hash; } |
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89 void set_frame(u4 frame_pos, JfrStackFrame& frame); |
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90 void set_reached_root(bool reached_root) { _reached_root = reached_root; } |
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91 bool full_stacktrace() const { return _reached_root; } |
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92 bool have_lineno() const { return _lineno; } |
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93 }; |
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94 |
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95 class JfrStackTraceRepository : public JfrCHeapObj { |
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96 friend class JfrRecorder; |
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97 friend class JfrRecorderService; |
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98 friend class ObjectSampler; |
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99 friend class WriteObjectSampleStacktrace; |
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100 |
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101 class StackTrace : public JfrCHeapObj { |
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102 friend class JfrStackTrace; |
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103 friend class JfrStackTraceRepository; |
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104 private: |
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105 StackTrace* _next; |
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106 JfrStackFrame* _frames; |
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107 const traceid _id; |
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108 u4 _nr_of_frames; |
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109 unsigned int _hash; |
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110 bool _reached_root; |
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111 mutable bool _written; |
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112 |
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113 unsigned int hash() const { return _hash; } |
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114 bool should_write() const { return !_written; } |
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115 |
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116 public: |
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117 StackTrace(traceid id, const JfrStackTrace& trace, StackTrace* next); |
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118 ~StackTrace(); |
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119 traceid id() const { return _id; } |
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120 StackTrace* next() const { return _next; } |
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121 void write(JfrChunkWriter& cw) const; |
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122 void write(JfrCheckpointWriter& cpw) const; |
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123 bool equals(const JfrStackTrace& rhs) const; |
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124 }; |
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125 |
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126 private: |
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127 static const u4 TABLE_SIZE = 2053; |
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128 StackTrace* _table[TABLE_SIZE]; |
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129 traceid _next_id; |
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130 u4 _entries; |
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131 |
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132 size_t write_impl(JfrChunkWriter& cw, bool clear); |
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133 traceid record_for(JavaThread* thread, int skip, JfrStackFrame* frames, u4 max_frames); |
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134 traceid record_for(JavaThread* thread, int skip, JfrStackFrame* frames, u4 max_frames, unsigned int* hash); |
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135 traceid add_trace(const JfrStackTrace& stacktrace); |
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136 const StackTrace* resolve_entry(unsigned int hash, traceid id) const; |
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137 |
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138 static void write_metadata(JfrCheckpointWriter& cpw); |
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139 |
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140 JfrStackTraceRepository(); |
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141 static JfrStackTraceRepository& instance(); |
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142 public: |
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143 static JfrStackTraceRepository* create(); |
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144 bool initialize(); |
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145 static void destroy(); |
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146 static traceid add(const JfrStackTrace& stacktrace); |
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147 static traceid record(Thread* thread, int skip = 0); |
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148 static traceid record(Thread* thread, int skip, unsigned int* hash); |
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149 traceid write(JfrCheckpointWriter& cpw, traceid id, unsigned int hash); |
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150 size_t write(JfrChunkWriter& cw, bool clear); |
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151 size_t clear(); |
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152 }; |
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153 |
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154 #endif // SHARE_VM_JFR_RECORDER_STACKTRACE_JFRSTACKTRACEREPOSITORY_HPP |