Mercurial > hg > truffle
annotate src/share/vm/oops/methodCounters.hpp @ 21771:ed3d7af510bd
BytecodeParser#lookupField: use eagerResolving instead of unresolvedIsError to guard explicit initialization.
author | Josef Eisl <josef.eisl@jku.at> |
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date | Wed, 03 Jun 2015 09:28:41 +0200 |
parents | 7848fc12602b |
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rev | line source |
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1 /* |
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2 * Copyright (c) 2013, 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_OOPS_METHODCOUNTERS_HPP |
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26 #define SHARE_VM_OOPS_METHODCOUNTERS_HPP |
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27 |
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28 #include "oops/metadata.hpp" |
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29 #include "interpreter/invocationCounter.hpp" |
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30 |
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31 class MethodCounters: public MetaspaceObj { |
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32 friend class VMStructs; |
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33 private: |
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34 int _interpreter_invocation_count; // Count of times invoked (reused as prev_event_count in tiered) |
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35 u2 _interpreter_throwout_count; // Count of times method was exited via exception while interpreting |
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36 u2 _number_of_breakpoints; // fullspeed debugging support |
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37 InvocationCounter _invocation_counter; // Incremented before each activation of the method - used to trigger frequency-based optimizations |
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38 InvocationCounter _backedge_counter; // Incremented before each backedge taken - used to trigger frequencey-based optimizations |
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39 |
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40 #ifdef TIERED |
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41 float _rate; // Events (invocation and backedge counter increments) per millisecond |
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42 u1 _highest_comp_level; // Highest compile level this method has ever seen. |
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43 u1 _highest_osr_comp_level; // Same for OSR level |
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44 jlong _prev_time; // Previous time the rate was acquired |
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45 #endif |
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46 |
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47 MethodCounters() : _interpreter_invocation_count(0), |
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48 _interpreter_throwout_count(0), |
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49 _number_of_breakpoints(0) |
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50 #ifdef TIERED |
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51 , _rate(0), |
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52 _highest_comp_level(0), |
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53 _highest_osr_comp_level(0), |
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54 _prev_time(0) |
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55 #endif |
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56 { |
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57 invocation_counter()->init(); |
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58 backedge_counter()->init(); |
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59 } |
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60 |
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61 public: |
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62 static MethodCounters* allocate(ClassLoaderData* loader_data, TRAPS); |
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63 |
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64 void deallocate_contents(ClassLoaderData* loader_data) {} |
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65 DEBUG_ONLY(bool on_stack() { return false; }) // for template |
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66 |
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67 static int size() { return sizeof(MethodCounters) / wordSize; } |
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68 |
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69 bool is_klass() const { return false; } |
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70 |
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71 void clear_counters(); |
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72 |
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73 int interpreter_invocation_count() { |
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74 return _interpreter_invocation_count; |
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75 } |
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76 void set_interpreter_invocation_count(int count) { |
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77 _interpreter_invocation_count = count; |
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78 } |
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79 int increment_interpreter_invocation_count() { |
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80 return ++_interpreter_invocation_count; |
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81 } |
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82 |
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83 void interpreter_throwout_increment() { |
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84 if (_interpreter_throwout_count < 65534) { |
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85 _interpreter_throwout_count++; |
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86 } |
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87 } |
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88 int interpreter_throwout_count() const { |
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89 return _interpreter_throwout_count; |
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90 } |
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91 void set_interpreter_throwout_count(int count) { |
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92 _interpreter_throwout_count = count; |
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93 } |
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94 |
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95 u2 number_of_breakpoints() const { return _number_of_breakpoints; } |
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96 void incr_number_of_breakpoints() { ++_number_of_breakpoints; } |
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97 void decr_number_of_breakpoints() { --_number_of_breakpoints; } |
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98 void clear_number_of_breakpoints() { _number_of_breakpoints = 0; } |
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99 |
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100 #ifdef TIERED |
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101 jlong prev_time() const { return _prev_time; } |
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102 void set_prev_time(jlong time) { _prev_time = time; } |
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103 float rate() const { return _rate; } |
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104 void set_rate(float rate) { _rate = rate; } |
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105 #endif |
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106 |
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107 int highest_comp_level() const; |
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108 void set_highest_comp_level(int level); |
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109 int highest_osr_comp_level() const; |
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110 void set_highest_osr_comp_level(int level); |
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111 |
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112 // invocation counter |
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113 InvocationCounter* invocation_counter() { return &_invocation_counter; } |
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114 InvocationCounter* backedge_counter() { return &_backedge_counter; } |
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115 |
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116 static ByteSize interpreter_invocation_counter_offset() { |
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117 return byte_offset_of(MethodCounters, _interpreter_invocation_count); |
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118 } |
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119 |
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120 static ByteSize invocation_counter_offset() { |
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121 return byte_offset_of(MethodCounters, _invocation_counter); |
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122 } |
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123 |
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124 static ByteSize backedge_counter_offset() { |
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125 return byte_offset_of(MethodCounters, _backedge_counter); |
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126 } |
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127 |
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128 static int interpreter_invocation_counter_offset_in_bytes() { |
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129 return offset_of(MethodCounters, _interpreter_invocation_count); |
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130 } |
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131 |
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132 }; |
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133 #endif //SHARE_VM_OOPS_METHODCOUNTERS_HPP |