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1 /*
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2 * Copyright 1997-2007 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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20 * CA 95054 USA or visit www.sun.com if you need additional information or
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21 * have any questions.
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22 *
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23 */
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24
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25 # include "incls/_precompiled.incl"
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26
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27 #include "incls/_rframe.cpp.incl"
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28
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29 static RFrame*const noCaller = (RFrame*) 0x1; // no caller (i.e., initial frame)
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30 static RFrame*const noCallerYet = (RFrame*) 0x0; // caller not yet computed
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31
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32 RFrame::RFrame(frame fr, JavaThread* thread, RFrame*const callee) :
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33 _fr(fr), _thread(thread), _callee(callee), _num(callee ? callee->num() + 1 : 0) {
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34 _caller = (RFrame*)noCallerYet;
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35 _invocations = 0;
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36 _distance = 0;
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37 }
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38
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39 void RFrame::set_distance(int d) {
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40 assert(is_compiled() || d >= 0, "should be positive");
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41 _distance = d;
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42 }
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43
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44 InterpretedRFrame::InterpretedRFrame(frame fr, JavaThread* thread, RFrame*const callee)
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45 : RFrame(fr, thread, callee) {
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46 RegisterMap map(thread, false);
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47 _vf = javaVFrame::cast(vframe::new_vframe(&_fr, &map, thread));
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48 _method = methodHandle(thread, _vf->method());
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49 assert( _vf->is_interpreted_frame(), "must be interpreted");
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50 init();
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51 }
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52
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53 InterpretedRFrame::InterpretedRFrame(frame fr, JavaThread* thread, methodHandle m)
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54 : RFrame(fr, thread, NULL) {
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55 RegisterMap map(thread, false);
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56 _vf = javaVFrame::cast(vframe::new_vframe(&_fr, &map, thread));
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57 _method = m;
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58
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59 assert( _vf->is_interpreted_frame(), "must be interpreted");
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60 init();
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61 }
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62
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63 CompiledRFrame::CompiledRFrame(frame fr, JavaThread* thread, RFrame*const callee)
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64 : RFrame(fr, thread, callee) {
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65 init();
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66 }
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67
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68 CompiledRFrame::CompiledRFrame(frame fr, JavaThread* thread)
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69 : RFrame(fr, thread, NULL) {
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70 init();
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71 }
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72
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73 DeoptimizedRFrame::DeoptimizedRFrame(frame fr, JavaThread* thread, RFrame*const callee)
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74 : InterpretedRFrame(fr, thread, callee) {}
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75
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76 RFrame* RFrame::new_RFrame(frame fr, JavaThread* thread, RFrame*const callee) {
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77 RFrame* rf;
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78 int dist = callee ? callee->distance() : -1;
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79 if (fr.is_interpreted_frame()) {
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80 rf = new InterpretedRFrame(fr, thread, callee);
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81 dist++;
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82 } else if (fr.is_compiled_frame()) {
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83 // Even deopted frames look compiled because the deopt
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84 // is invisible until it happens.
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85 rf = new CompiledRFrame(fr, thread, callee);
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86 } else {
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87 assert(false, "Unhandled frame type");
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88 }
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89 rf->set_distance(dist);
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90 rf->init();
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91 return rf;
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92 }
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93
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94 RFrame* RFrame::caller() {
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95 if (_caller != noCallerYet) return (_caller == noCaller) ? NULL : _caller; // already computed caller
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96
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97 // caller not yet computed; do it now
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98 if (_fr.is_first_java_frame()) {
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99 _caller = (RFrame*)noCaller;
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100 return NULL;
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101 }
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102
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103 RegisterMap map(_thread, false);
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104 frame sender = _fr.real_sender(&map);
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105 if (sender.is_java_frame()) {
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106 _caller = new_RFrame(sender, thread(), this);
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107 return _caller;
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108 }
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109
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110 // Real caller is not java related
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111 _caller = (RFrame*)noCaller;
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112 return NULL;
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113 }
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114
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115 int InterpretedRFrame::cost() const {
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116 return _method->code_size(); // fix this
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117 //return _method->estimated_inline_cost(_receiverKlass);
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118 }
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119
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120 int CompiledRFrame::cost() const {
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121 nmethod* nm = top_method()->code();
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122 if (nm != NULL) {
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123 return nm->code_size();
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124 } else {
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125 return top_method()->code_size();
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126 }
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127 }
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128
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129 void CompiledRFrame::init() {
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130 RegisterMap map(thread(), false);
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131 vframe* vf = vframe::new_vframe(&_fr, &map, thread());
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132 assert(vf->is_compiled_frame(), "must be compiled");
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133 _nm = compiledVFrame::cast(vf)->code();
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134 vf = vf->top();
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135 _vf = javaVFrame::cast(vf);
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136 _method = methodHandle(thread(), CodeCache::find_nmethod(_fr.pc())->method());
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137 assert(_method(), "should have found a method");
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138 #ifndef PRODUCT
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139 _invocations = _method->compiled_invocation_count();
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140 #endif
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141 }
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142
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143 void InterpretedRFrame::init() {
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144 _invocations = _method->invocation_count() + _method->backedge_count();
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145 }
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146
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147 void RFrame::print(const char* kind) {
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148 #ifndef PRODUCT
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149 #ifdef COMPILER2
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150 int cnt = top_method()->interpreter_invocation_count();
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151 #else
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152 int cnt = top_method()->invocation_count();
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153 #endif
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154 tty->print("%3d %s ", _num, is_interpreted() ? "I" : "C");
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155 top_method()->print_short_name(tty);
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156 tty->print_cr(": inv=%5d(%d) cst=%4d", _invocations, cnt, cost());
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157 #endif
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158 }
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159
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160 void CompiledRFrame::print() {
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161 RFrame::print("comp");
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162 }
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163
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164 void InterpretedRFrame::print() {
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165 RFrame::print("int.");
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166 }
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167
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168 void DeoptimizedRFrame::print() {
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169 RFrame::print("deopt.");
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170 }
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