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annotate src/share/vm/ci/ciMethodData.hpp @ 20804:7848fc12602b

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Merge with jdk8u40-b25
author Gilles Duboscq <gilles.m.duboscq@oracle.com>
date Tue, 07 Apr 2015 14:58:49 +0200
parents 52b4284cb496 2c6ef90f030a
children
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1 /*
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2 * Copyright (c) 2001, 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_CI_CIMETHODDATA_HPP
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26 #define SHARE_VM_CI_CIMETHODDATA_HPP
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27
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28 #include "ci/ciClassList.hpp"
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29 #include "ci/ciKlass.hpp"
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30 #include "ci/ciObject.hpp"
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31 #include "ci/ciUtilities.hpp"
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32 #include "oops/methodData.hpp"
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33 #include "oops/oop.inline.hpp"
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34 #include "runtime/deoptimization.hpp"
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35
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36 class ciBitData;
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37 class ciCounterData;
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38 class ciJumpData;
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39 class ciReceiverTypeData;
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40 class ciRetData;
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41 class ciBranchData;
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42 class ciArrayData;
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43 class ciMultiBranchData;
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44 class ciArgInfoData;
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45 class ciCallTypeData;
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46 class ciVirtualCallTypeData;
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47 class ciParametersTypeData;
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48 class ciSpeculativeTrapData;;
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49
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50 typedef ProfileData ciProfileData;
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51
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52 class ciBitData : public BitData {
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53 public:
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54 ciBitData(DataLayout* layout) : BitData(layout) {};
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55 };
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56
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57 class ciCounterData : public CounterData {
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58 public:
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59 ciCounterData(DataLayout* layout) : CounterData(layout) {};
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60 };
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61
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62 class ciJumpData : public JumpData {
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63 public:
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64 ciJumpData(DataLayout* layout) : JumpData(layout) {};
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65 };
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66
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67 class ciTypeEntries {
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68 protected:
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69 static intptr_t translate_klass(intptr_t k) {
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70 Klass* v = TypeEntries::valid_klass(k);
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71 if (v != NULL) {
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72 ciKlass* klass = CURRENT_ENV->get_klass(v);
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73 CURRENT_ENV->ensure_metadata_alive(klass);
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74 return with_status(klass, k);
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75 }
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76 return with_status(NULL, k);
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77 }
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78
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79 public:
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80 static ciKlass* valid_ciklass(intptr_t k) {
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81 if (!TypeEntries::is_type_none(k) &&
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82 !TypeEntries::is_type_unknown(k)) {
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83 ciKlass* res = (ciKlass*)TypeEntries::klass_part(k);
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84 assert(res != NULL, "invalid");
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85 return res;
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86 } else {
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87 return NULL;
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88 }
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89 }
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91 static intptr_t with_status(ciKlass* k, intptr_t in) {
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92 return TypeEntries::with_status((intptr_t)k, in);
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93 }
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94
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95 #ifndef PRODUCT
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96 static void print_ciklass(outputStream* st, intptr_t k);
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97 #endif
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98 };
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99
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100 class ciTypeStackSlotEntries : public TypeStackSlotEntries, ciTypeEntries {
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101 public:
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102 void translate_type_data_from(const TypeStackSlotEntries* args);
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103
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104 ciKlass* valid_type(int i) const {
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105 return valid_ciklass(type(i));
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106 }
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107
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108 bool maybe_null(int i) const {
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109 return was_null_seen(type(i));
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110 }
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111
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112 #ifndef PRODUCT
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113 void print_data_on(outputStream* st) const;
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114 #endif
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115 };
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116
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117 class ciReturnTypeEntry : public ReturnTypeEntry, ciTypeEntries {
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118 public:
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119 void translate_type_data_from(const ReturnTypeEntry* ret);
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120
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121 ciKlass* valid_type() const {
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122 return valid_ciklass(type());
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123 }
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124
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125 bool maybe_null() const {
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126 return was_null_seen(type());
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127 }
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128
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129 #ifndef PRODUCT
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130 void print_data_on(outputStream* st) const;
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131 #endif
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132 };
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133
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134 class ciCallTypeData : public CallTypeData {
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135 public:
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136 ciCallTypeData(DataLayout* layout) : CallTypeData(layout) {}
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137
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138 ciTypeStackSlotEntries* args() const { return (ciTypeStackSlotEntries*)CallTypeData::args(); }
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139 ciReturnTypeEntry* ret() const { return (ciReturnTypeEntry*)CallTypeData::ret(); }
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140
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141 void translate_from(const ProfileData* data) {
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142 if (has_arguments()) {
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143 args()->translate_type_data_from(data->as_CallTypeData()->args());
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144 }
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145 if (has_return()) {
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146 ret()->translate_type_data_from(data->as_CallTypeData()->ret());
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147 }
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148 }
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149
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150 intptr_t argument_type(int i) const {
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151 assert(has_arguments(), "no arg type profiling data");
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152 return args()->type(i);
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153 }
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154
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155 ciKlass* valid_argument_type(int i) const {
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156 assert(has_arguments(), "no arg type profiling data");
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157 return args()->valid_type(i);
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158 }
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159
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160 intptr_t return_type() const {
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161 assert(has_return(), "no ret type profiling data");
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162 return ret()->type();
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163 }
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164
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165 ciKlass* valid_return_type() const {
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166 assert(has_return(), "no ret type profiling data");
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167 return ret()->valid_type();
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168 }
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169
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170 bool argument_maybe_null(int i) const {
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171 return args()->maybe_null(i);
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172 }
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173
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174 bool return_maybe_null() const {
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175 return ret()->maybe_null();
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176 }
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177
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178 #ifndef PRODUCT
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179 void print_data_on(outputStream* st, const char* extra) const;
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180 #endif
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181 };
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182
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183 class ciReceiverTypeData : public ReceiverTypeData {
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184 public:
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185 ciReceiverTypeData(DataLayout* layout) : ReceiverTypeData(layout) {};
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186
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187 void set_receiver(uint row, ciKlass* recv) {
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188 assert((uint)row < row_limit(), "oob");
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189 set_intptr_at(receiver0_offset + row * receiver_type_row_cell_count,
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190 (intptr_t) recv);
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191 }
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192
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193 ciKlass* receiver(uint row) const {
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194 assert((uint)row < row_limit(), "oob");
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195 ciKlass* recv = (ciKlass*)intptr_at(receiver0_offset + row * receiver_type_row_cell_count);
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196 assert(recv == NULL || recv->is_klass(), "wrong type");
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197 return recv;
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198 }
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199
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200 // Copy & translate from oop based ReceiverTypeData
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201 virtual void translate_from(const ProfileData* data) {
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202 translate_receiver_data_from(data);
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203 }
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204 void translate_receiver_data_from(const ProfileData* data);
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205 #ifndef PRODUCT
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206 void print_data_on(outputStream* st, const char* extra) const;
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207 void print_receiver_data_on(outputStream* st) const;
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208 #endif
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209 };
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210
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211 class ciVirtualCallData : public VirtualCallData {
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212 // Fake multiple inheritance... It's a ciReceiverTypeData also.
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213 ciReceiverTypeData* rtd_super() const { return (ciReceiverTypeData*) this; }
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214
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215 public:
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216 ciVirtualCallData(DataLayout* layout) : VirtualCallData(layout) {};
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217
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218 void set_receiver(uint row, ciKlass* recv) {
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219 rtd_super()->set_receiver(row, recv);
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220 }
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221
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222 ciKlass* receiver(uint row) {
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223 return rtd_super()->receiver(row);
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224 }
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225
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226 // Copy & translate from oop based VirtualCallData
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227 virtual void translate_from(const ProfileData* data) {
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228 rtd_super()->translate_receiver_data_from(data);
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229 }
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230 #ifndef PRODUCT
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231 void print_data_on(outputStream* st, const char* extra) const;
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232 #endif
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233 };
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234
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235 class ciVirtualCallTypeData : public VirtualCallTypeData {
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236 private:
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237 // Fake multiple inheritance... It's a ciReceiverTypeData also.
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238 ciReceiverTypeData* rtd_super() const { return (ciReceiverTypeData*) this; }
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239 public:
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240 ciVirtualCallTypeData(DataLayout* layout) : VirtualCallTypeData(layout) {}
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241
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242 void set_receiver(uint row, ciKlass* recv) {
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243 rtd_super()->set_receiver(row, recv);
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244 }
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245
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246 ciKlass* receiver(uint row) const {
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247 return rtd_super()->receiver(row);
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248 }
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249
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250 ciTypeStackSlotEntries* args() const { return (ciTypeStackSlotEntries*)VirtualCallTypeData::args(); }
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251 ciReturnTypeEntry* ret() const { return (ciReturnTypeEntry*)VirtualCallTypeData::ret(); }
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252
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253 // Copy & translate from oop based VirtualCallData
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254 virtual void translate_from(const ProfileData* data) {
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255 rtd_super()->translate_receiver_data_from(data);
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256 if (has_arguments()) {
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257 args()->translate_type_data_from(data->as_VirtualCallTypeData()->args());
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258 }
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259 if (has_return()) {
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260 ret()->translate_type_data_from(data->as_VirtualCallTypeData()->ret());
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261 }
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262 }
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263
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264 intptr_t argument_type(int i) const {
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265 assert(has_arguments(), "no arg type profiling data");
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266 return args()->type(i);
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267 }
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268
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269 ciKlass* valid_argument_type(int i) const {
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270 assert(has_arguments(), "no arg type profiling data");
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271 return args()->valid_type(i);
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272 }
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273
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274 intptr_t return_type() const {
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275 assert(has_return(), "no ret type profiling data");
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276 return ret()->type();
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277 }
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278
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279 ciKlass* valid_return_type() const {
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280 assert(has_return(), "no ret type profiling data");
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281 return ret()->valid_type();
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282 }
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283
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284 bool argument_maybe_null(int i) const {
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285 return args()->maybe_null(i);
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286 }
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287
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288 bool return_maybe_null() const {
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289 return ret()->maybe_null();
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290 }
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291
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292 #ifndef PRODUCT
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293 void print_data_on(outputStream* st, const char* extra) const;
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294 #endif
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295 };
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296
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297
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298 class ciRetData : public RetData {
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299 public:
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300 ciRetData(DataLayout* layout) : RetData(layout) {};
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301 };
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302
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303 class ciBranchData : public BranchData {
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304 public:
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305 ciBranchData(DataLayout* layout) : BranchData(layout) {};
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306 };
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307
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308 class ciArrayData : public ArrayData {
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309 public:
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310 ciArrayData(DataLayout* layout) : ArrayData(layout) {};
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311 };
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312
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313 class ciMultiBranchData : public MultiBranchData {
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314 public:
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315 ciMultiBranchData(DataLayout* layout) : MultiBranchData(layout) {};
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316 };
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317
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318 class ciArgInfoData : public ArgInfoData {
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319 public:
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320 ciArgInfoData(DataLayout* layout) : ArgInfoData(layout) {};
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321 };
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322
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323 class ciParametersTypeData : public ParametersTypeData {
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324 public:
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325 ciParametersTypeData(DataLayout* layout) : ParametersTypeData(layout) {}
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326
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327 virtual void translate_from(const ProfileData* data) {
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328 parameters()->translate_type_data_from(data->as_ParametersTypeData()->parameters());
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329 }
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330
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331 ciTypeStackSlotEntries* parameters() const { return (ciTypeStackSlotEntries*)ParametersTypeData::parameters(); }
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332
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333 ciKlass* valid_parameter_type(int i) const {
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334 return parameters()->valid_type(i);
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335 }
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336
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337 bool parameter_maybe_null(int i) const {
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338 return parameters()->maybe_null(i);
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339 }
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340
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341 #ifndef PRODUCT
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342 void print_data_on(outputStream* st, const char* extra) const;
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343 #endif
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344 };
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345
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346 class ciSpeculativeTrapData : public SpeculativeTrapData {
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347 public:
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348 ciSpeculativeTrapData(DataLayout* layout) : SpeculativeTrapData(layout) {}
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349
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350 virtual void translate_from(const ProfileData* data);
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351
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352 ciMethod* method() const {
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353 return (ciMethod*)intptr_at(method_offset);
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354 }
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355
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356 void set_method(ciMethod* m) {
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357 set_intptr_at(method_offset, (intptr_t)m);
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358 }
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359
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360 #ifndef PRODUCT
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361 void print_data_on(outputStream* st, const char* extra) const;
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362 #endif
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363 };
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364
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365 // ciMethodData
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366 //
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367 // This class represents a MethodData* in the HotSpot virtual
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368 // machine.
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369
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370 class ciMethodData : public ciMetadata {
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371 CI_PACKAGE_ACCESS
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372 friend class ciReplay;
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373
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374 private:
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375 // Size in bytes
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376 int _data_size;
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377 int _extra_data_size;
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378
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379 // Data entries
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380 intptr_t* _data;
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381
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382 // Cached hint for data_before()
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383 int _hint_di;
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384
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385 // Is data attached? And is it mature?
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386 enum { empty_state, immature_state, mature_state };
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387 u_char _state;
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388
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389 // Set this true if empty extra_data slots are ever witnessed.
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390 u_char _saw_free_extra_data;
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391
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392 // Support for interprocedural escape analysis
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393 intx _eflags; // flags on escape information
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394 intx _arg_local; // bit set of non-escaping arguments
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395 intx _arg_stack; // bit set of stack-allocatable arguments
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396 intx _arg_returned; // bit set of returned arguments
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397
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398 // Maturity of the oop when the snapshot is taken.
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399 int _current_mileage;
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400
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401 // These counters hold the age of MDO in tiered. In tiered we can have the same method
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402 // running at different compilation levels concurrently. So, in order to precisely measure
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403 // its maturity we need separate counters.
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404 int _invocation_counter;
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405 int _backedge_counter;
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406
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407 // Coherent snapshot of original header.
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408 MethodData _orig;
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409
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410 // Dedicated area dedicated to parameters. Null if no parameter
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411 // profiling for this method.
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412 DataLayout* _parameters;
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413
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414 ciMethodData(MethodData* md);
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415 ciMethodData();
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416
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417 // Accessors
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418 int data_size() const { return _data_size; }
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419 int extra_data_size() const { return _extra_data_size; }
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420 intptr_t * data() const { return _data; }
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421
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422 MethodData* get_MethodData() const {
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423 return (MethodData*)_metadata;
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424 }
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425
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426 const char* type_string() { return "ciMethodData"; }
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427
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428 void print_impl(outputStream* st);
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429
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430 DataLayout* data_layout_at(int data_index) const {
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431 assert(data_index % sizeof(intptr_t) == 0, "unaligned");
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432 return (DataLayout*) (((address)_data) + data_index);
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433 }
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434
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435 bool out_of_bounds(int data_index) {
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436 return data_index >= data_size();
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437 }
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438
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439 // hint accessors
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440 int hint_di() const { return _hint_di; }
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441 void set_hint_di(int di) {
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442 assert(!out_of_bounds(di), "hint_di out of bounds");
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443 _hint_di = di;
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444 }
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445 ciProfileData* data_before(int bci) {
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446 // avoid SEGV on this edge case
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447 if (data_size() == 0)
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448 return NULL;
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449 int hint = hint_di();
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450 if (data_layout_at(hint)->bci() <= bci)
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451 return data_at(hint);
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452 return first_data();
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453 }
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454
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455
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456 // What is the index of the first data entry?
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457 int first_di() { return 0; }
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458
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459 ciArgInfoData *arg_info() const;
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460
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461 address data_base() const {
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462 return (address) _data;
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463 }
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464 DataLayout* limit_data_position() const {
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465 return (DataLayout*)((address)data_base() + _data_size);
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466 }
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467
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468 void load_extra_data();
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469 ciProfileData* bci_to_extra_data(int bci, ciMethod* m, bool& two_free_slots);
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470
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471 public:
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472 bool is_method_data() const { return true; }
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473
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474 bool is_empty() { return _state == empty_state; }
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475 bool is_mature() { return _state == mature_state; }
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476
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477 int creation_mileage() { return _orig.creation_mileage(); }
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478 int current_mileage() { return _current_mileage; }
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479
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480 int invocation_count() { return _invocation_counter; }
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481 int backedge_count() { return _backedge_counter; }
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482
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483 #if INCLUDE_RTM_OPT
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484 // return cached value
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485 int rtm_state() {
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486 if (is_empty()) {
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487 return NoRTM;
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488 } else {
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489 return get_MethodData()->rtm_state();
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490 }
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491 }
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492 #endif
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493
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494 // Transfer information about the method to MethodData*.
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495 // would_profile means we would like to profile this method,
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496 // meaning it's not trivial.
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497 void set_would_profile(bool p);
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498 // Also set the numer of loops and blocks in the method.
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499 // Again, this is used to determine if a method is trivial.
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500 void set_compilation_stats(short loops, short blocks);
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501 // If the compiler finds a profiled type that is known statically
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502 // for sure, set it in the MethodData
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503 void set_argument_type(int bci, int i, ciKlass* k);
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504 void set_parameter_type(int i, ciKlass* k);
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505 void set_return_type(int bci, ciKlass* k);
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506
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507 void load_data();
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508
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509 // Convert a dp (data pointer) to a di (data index).
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510 int dp_to_di(address dp) {
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511 return dp - ((address)_data);
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512 }
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513
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514 // Get the data at an arbitrary (sort of) data index.
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515 ciProfileData* data_at(int data_index);
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516
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517 // Walk through the data in order.
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518 ciProfileData* first_data() { return data_at(first_di()); }
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519 ciProfileData* next_data(ciProfileData* current);
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520 bool is_valid(ciProfileData* current) { return current != NULL; }
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521
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522 DataLayout* extra_data_base() const { return limit_data_position(); }
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523
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524 // Get the data at an arbitrary bci, or NULL if there is none. If m
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525 // is not NULL look for a SpeculativeTrapData if any first.
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526 ciProfileData* bci_to_data(int bci, ciMethod* m = NULL);
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527
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528 uint overflow_trap_count() const {
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529 return _orig.overflow_trap_count();
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530 }
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531 uint overflow_recompile_count() const {
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532 return _orig.overflow_recompile_count();
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533 }
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534 uint decompile_count() const {
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535 return _orig.decompile_count();
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536 }
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537 uint trap_count(int reason) const {
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538 return _orig.trap_count(reason);
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539 }
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540 uint trap_reason_limit() const { return _orig.trap_reason_limit(); }
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541 uint trap_count_limit() const { return _orig.trap_count_limit(); }
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542
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543 // Helpful query functions that decode trap_state.
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544 int has_trap_at(ciProfileData* data, int reason);
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545 int has_trap_at(int bci, ciMethod* m, int reason) {
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546 assert((m != NULL) == Deoptimization::reason_is_speculate(reason), "inconsistent method/reason");
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547 return has_trap_at(bci_to_data(bci, m), reason);
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548 }
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549 int trap_recompiled_at(ciProfileData* data);
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550 int trap_recompiled_at(int bci, ciMethod* m) {
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551 return trap_recompiled_at(bci_to_data(bci, m));
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552 }
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553
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554 void clear_escape_info();
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555 bool has_escape_info();
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556 void update_escape_info();
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557
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558 void set_eflag(MethodData::EscapeFlag f);
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559 void clear_eflag(MethodData::EscapeFlag f);
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560 bool eflag_set(MethodData::EscapeFlag f) const;
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561
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562 void set_arg_local(int i);
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563 void set_arg_stack(int i);
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564 void set_arg_returned(int i);
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565 void set_arg_modified(int arg, uint val);
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566
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567 bool is_arg_local(int i) const;
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568 bool is_arg_stack(int i) const;
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569 bool is_arg_returned(int i) const;
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570 uint arg_modified(int arg) const;
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571
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572 ciParametersTypeData* parameters_type_data() const {
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573 return _parameters != NULL ? new ciParametersTypeData(_parameters) : NULL;
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574 }
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575
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576 // Code generation helper
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577 ByteSize offset_of_slot(ciProfileData* data, ByteSize slot_offset_in_data);
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578 int byte_offset_of_slot(ciProfileData* data, ByteSize slot_offset_in_data) { return in_bytes(offset_of_slot(data, slot_offset_in_data)); }
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579
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580 #ifndef PRODUCT
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581 // printing support for method data
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582 void print();
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583 void print_data_on(outputStream* st);
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584 #endif
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585 void dump_replay_data(outputStream* out);
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586 };
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587
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588 #endif // SHARE_VM_CI_CIMETHODDATA_HPP