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annotate src/share/vm/compiler/abstractCompiler.hpp @ 13364:5a4293f24642

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added -G:PrintCompRate option for periodically printing out the current compilation rate
author Doug Simon <doug.simon@oracle.com>
date Tue, 17 Dec 2013 16:45:02 +0100
parents 096c224171c4
children d8041d695d19
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1 /*
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2 * Copyright (c) 1999, 2012, 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_COMPILER_ABSTRACTCOMPILER_HPP
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26 #define SHARE_VM_COMPILER_ABSTRACTCOMPILER_HPP
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27
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28 #include "ci/compilerInterface.hpp"
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29
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30 typedef void (*initializer)(void);
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31
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32 #ifdef GRAAL
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33 // Per-compiler statistics
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34 class CompilerStatistics VALUE_OBJ_CLASS_SPEC {
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35 friend class VMStructs;
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36
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37 class Data VALUE_OBJ_CLASS_SPEC {
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38 friend class VMStructs;
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39 public:
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40 elapsedTimer _time; // time spent compiling
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41 int _bytes; // number of bytecodes compiled, including inlined bytecodes
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42 int _count; // number of compilations
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43 Data() : _bytes(0), _count(0) {}
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44 void update(elapsedTimer time, int bytes) {
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45 _time.add(time);
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46 _bytes += bytes;
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47 _count++;
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48 }
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49 };
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51 public:
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52 Data _standard; // stats for non-OSR compilations
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53 Data _osr; // stats for OSR compilations
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54 int _nmethods_size; //
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55 int _nmethods_code_size;
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56 int bytes_per_second() {
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57 int bytes = _standard._bytes + _osr._bytes;
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58 if (bytes == 0) {
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59 return 0;
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60 }
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61 double seconds = _standard._time.seconds() + _osr._time.seconds();
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62 return seconds == 0.0 ? 0 : (int) (bytes / seconds);
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63 }
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64 CompilerStatistics() : _nmethods_size(0), _nmethods_code_size(0) {}
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65 };
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66 #endif
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67
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68 class AbstractCompiler : public CHeapObj<mtCompiler> {
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69 private:
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70 volatile int _num_compiler_threads;
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72 protected:
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73 volatile int _compiler_state;
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74 // Used for tracking global state of compiler runtime initialization
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75 enum { uninitialized, initializing, initialized, failed, shut_down };
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76
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77 // This method returns true for the first compiler thread that reaches that methods.
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78 // This thread will initialize the compiler runtime.
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79 bool should_perform_init();
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80
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81 // The (closed set) of concrete compiler classes. Using an tag like this
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82 // avoids a confusing use of macros around the definition of the
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83 // 'is_<compiler type>' methods.
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84 enum Type { c1, c2, shark, graal };
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85
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86 private:
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87 Type _type;
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88
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89 #ifdef GRAAL
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90 CompilerStatistics _stats;
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91 #endif
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92
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93 public:
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94 AbstractCompiler(Type type) : _type(type), _compiler_state(uninitialized), _num_compiler_threads(0) {}
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95
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96 // This function determines the compiler thread that will perform the
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97 // shutdown of the corresponding compiler runtime.
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98 bool should_perform_shutdown();
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99
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100 // Name of this compiler
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101 virtual const char* name() = 0;
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102
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103 // Should a native wrapper be generated by the runtime. This method
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104 // does *not* answer the question "can this compiler generate code for
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105 // a native method".
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106 virtual bool supports_native() { return true; }
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107 virtual bool supports_osr () { return true; }
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108 virtual bool can_compile_method(methodHandle method) { return true; }
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109 bool is_c1 () { return _type == c1; }
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110 bool is_c2 () { return _type == c2; }
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111 bool is_shark() { return _type == shark; }
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112 bool is_graal() { return _type == graal; }
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113
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114 // Customization
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115 virtual void initialize () = 0;
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116
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117 void set_num_compiler_threads(int num) { _num_compiler_threads = num; }
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118 int num_compiler_threads() { return _num_compiler_threads; }
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119
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120 // Get/set state of compiler objects
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121 bool is_initialized() { return _compiler_state == initialized; }
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122 bool is_failed () { return _compiler_state == failed;}
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123 void set_state (int state);
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124 void set_shut_down () { set_state(shut_down); }
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125 // Compilation entry point for methods
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126 virtual void compile_method(ciEnv* env, ciMethod* target, int entry_bci) {
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127 ShouldNotReachHere();
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128 }
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129
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130
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131 // Print compilation timers and statistics
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132 virtual void print_timers() {
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133 ShouldNotReachHere();
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134 }
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136 #ifdef GRAAL
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137 CompilerStatistics* stats() { return &_stats; }
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138 #endif
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139 };
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141 #endif // SHARE_VM_COMPILER_ABSTRACTCOMPILER_HPP