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1 /*
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2 * Copyright 2001-2007 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 class ciBitData;
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26 class ciCounterData;
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27 class ciJumpData;
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28 class ciReceiverTypeData;
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29 class ciRetData;
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30 class ciBranchData;
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31 class ciArrayData;
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32 class ciMultiBranchData;
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33
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34 typedef ProfileData ciProfileData;
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35
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36 class ciBitData : public BitData {
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37 public:
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38 ciBitData(DataLayout* layout) : BitData(layout) {};
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39 };
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40
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41 class ciCounterData : public CounterData {
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42 public:
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43 ciCounterData(DataLayout* layout) : CounterData(layout) {};
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44 };
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45
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46 class ciJumpData : public JumpData {
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47 public:
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48 ciJumpData(DataLayout* layout) : JumpData(layout) {};
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49 };
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50
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51 class ciReceiverTypeData : public ReceiverTypeData {
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52 public:
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53 ciReceiverTypeData(DataLayout* layout) : ReceiverTypeData(layout) {};
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54
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55 void set_receiver(uint row, ciKlass* recv) {
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56 assert((uint)row < row_limit(), "oob");
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57 set_intptr_at(receiver0_offset + row * receiver_type_row_cell_count,
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58 (intptr_t) recv);
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59 }
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60
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61 ciKlass* receiver(uint row) {
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62 assert((uint)row < row_limit(), "oob");
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63 ciObject* recv = (ciObject*)intptr_at(receiver0_offset + row * receiver_type_row_cell_count);
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64 assert(recv == NULL || recv->is_klass(), "wrong type");
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65 return (ciKlass*)recv;
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66 }
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67
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68 // Copy & translate from oop based ReceiverTypeData
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69 virtual void translate_from(ProfileData* data) {
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70 translate_receiver_data_from(data);
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71 }
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72 void translate_receiver_data_from(ProfileData* data);
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73 #ifndef PRODUCT
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74 void print_data_on(outputStream* st);
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75 void print_receiver_data_on(outputStream* st);
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76 #endif
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77 };
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78
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79 class ciVirtualCallData : public VirtualCallData {
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80 // Fake multiple inheritance... It's a ciReceiverTypeData also.
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81 ciReceiverTypeData* rtd_super() { return (ciReceiverTypeData*) this; }
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82
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83 public:
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84 ciVirtualCallData(DataLayout* layout) : VirtualCallData(layout) {};
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85
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86 void set_receiver(uint row, ciKlass* recv) {
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87 rtd_super()->set_receiver(row, recv);
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88 }
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89
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90 ciKlass* receiver(uint row) {
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91 return rtd_super()->receiver(row);
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92 }
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93
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94 // Copy & translate from oop based VirtualCallData
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95 virtual void translate_from(ProfileData* data) {
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96 rtd_super()->translate_receiver_data_from(data);
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97 }
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98 #ifndef PRODUCT
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99 void print_data_on(outputStream* st);
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100 #endif
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101 };
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102
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103
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104 class ciRetData : public RetData {
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105 public:
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106 ciRetData(DataLayout* layout) : RetData(layout) {};
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107 };
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108
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109 class ciBranchData : public BranchData {
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110 public:
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111 ciBranchData(DataLayout* layout) : BranchData(layout) {};
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112 };
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113
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114 class ciArrayData : public ArrayData {
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115 public:
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116 ciArrayData(DataLayout* layout) : ArrayData(layout) {};
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117 };
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118
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119 class ciMultiBranchData : public MultiBranchData {
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120 public:
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121 ciMultiBranchData(DataLayout* layout) : MultiBranchData(layout) {};
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122 };
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123
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124 // ciMethodData
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125 //
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126 // This class represents a methodDataOop in the HotSpot virtual
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127 // machine.
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128
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129 class ciMethodData : public ciObject {
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130 CI_PACKAGE_ACCESS
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131
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132 private:
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133 // Size in bytes
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134 int _data_size;
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135 int _extra_data_size;
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136
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137 // Data entries
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138 intptr_t* _data;
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139
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140 // Cached hint for data_before()
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141 int _hint_di;
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142
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143 // Is data attached? And is it mature?
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144 enum { empty_state, immature_state, mature_state };
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145 u_char _state;
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146
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147 // Set this true if empty extra_data slots are ever witnessed.
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148 u_char _saw_free_extra_data;
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149
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150 // Support for interprocedural escape analysis
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151 intx _eflags; // flags on escape information
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152 intx _arg_local; // bit set of non-escaping arguments
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153 intx _arg_stack; // bit set of stack-allocatable arguments
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154 intx _arg_returned; // bit set of returned arguments
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155
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156 // Maturity of the oop when the snapshot is taken.
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157 int _current_mileage;
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158
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159 // Coherent snapshot of original header.
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160 methodDataOopDesc _orig;
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161
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162 ciMethodData(methodDataHandle h_md);
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163 ciMethodData();
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164
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165 // Accessors
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166 int data_size() { return _data_size; }
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167 int extra_data_size() { return _extra_data_size; }
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168 intptr_t * data() { return _data; }
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169
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170 methodDataOop get_methodDataOop() const {
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171 if (handle() == NULL) return NULL;
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172 methodDataOop mdo = (methodDataOop)get_oop();
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173 assert(mdo != NULL, "illegal use of unloaded method data");
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174 return mdo;
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175 }
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176
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177 const char* type_string() { return "ciMethodData"; }
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178
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179 void print_impl(outputStream* st);
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180
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181 DataLayout* data_layout_at(int data_index) {
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182 assert(data_index % sizeof(intptr_t) == 0, "unaligned");
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183 return (DataLayout*) (((address)_data) + data_index);
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184 }
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185
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186 bool out_of_bounds(int data_index) {
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187 return data_index >= data_size();
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188 }
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189
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190 // hint accessors
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191 int hint_di() const { return _hint_di; }
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192 void set_hint_di(int di) {
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193 assert(!out_of_bounds(di), "hint_di out of bounds");
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194 _hint_di = di;
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195 }
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196 ciProfileData* data_before(int bci) {
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197 // avoid SEGV on this edge case
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198 if (data_size() == 0)
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199 return NULL;
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200 int hint = hint_di();
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201 if (data_layout_at(hint)->bci() <= bci)
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202 return data_at(hint);
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203 return first_data();
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204 }
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205
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206
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207 // What is the index of the first data entry?
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208 int first_di() { return 0; }
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209
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210 public:
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211 bool is_method_data() { return true; }
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212 bool is_empty() { return _state == empty_state; }
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213 bool is_mature() { return _state == mature_state; }
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214
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215 int creation_mileage() { return _orig.creation_mileage(); }
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216 int current_mileage() { return _current_mileage; }
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217
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218 void load_data();
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219
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220 // Convert a dp (data pointer) to a di (data index).
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221 int dp_to_di(address dp) {
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222 return dp - ((address)_data);
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223 }
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224
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225 // Get the data at an arbitrary (sort of) data index.
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226 ciProfileData* data_at(int data_index);
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227
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228 // Walk through the data in order.
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229 ciProfileData* first_data() { return data_at(first_di()); }
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230 ciProfileData* next_data(ciProfileData* current);
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231 bool is_valid(ciProfileData* current) { return current != NULL; }
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232
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233 // Get the data at an arbitrary bci, or NULL if there is none.
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234 ciProfileData* bci_to_data(int bci);
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235 ciProfileData* bci_to_extra_data(int bci, bool create_if_missing);
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236
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237 uint overflow_trap_count() const {
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238 return _orig.overflow_trap_count();
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239 }
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240 uint overflow_recompile_count() const {
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241 return _orig.overflow_recompile_count();
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242 }
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243 uint decompile_count() const {
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244 return _orig.decompile_count();
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245 }
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246 uint trap_count(int reason) const {
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247 return _orig.trap_count(reason);
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248 }
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249 uint trap_reason_limit() const { return _orig.trap_reason_limit(); }
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250 uint trap_count_limit() const { return _orig.trap_count_limit(); }
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251
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252 // Helpful query functions that decode trap_state.
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253 int has_trap_at(ciProfileData* data, int reason);
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254 int has_trap_at(int bci, int reason) {
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255 return has_trap_at(bci_to_data(bci), reason);
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256 }
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257 int trap_recompiled_at(ciProfileData* data);
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258 int trap_recompiled_at(int bci) {
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259 return trap_recompiled_at(bci_to_data(bci));
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260 }
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261
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262 void clear_escape_info();
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263 bool has_escape_info();
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264 void update_escape_info();
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265
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266 void set_eflag(methodDataOopDesc::EscapeFlag f);
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267 void clear_eflag(methodDataOopDesc::EscapeFlag f);
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268 bool eflag_set(methodDataOopDesc::EscapeFlag f) const;
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269
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270 void set_arg_local(int i);
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271 void set_arg_stack(int i);
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272 void set_arg_returned(int i);
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273
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274 bool is_arg_local(int i) const;
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275 bool is_arg_stack(int i) const;
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276 bool is_arg_returned(int i) const;
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277
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278 // Code generation helper
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279 ByteSize offset_of_slot(ciProfileData* data, ByteSize slot_offset_in_data);
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280 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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281
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282 #ifndef PRODUCT
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283 // printing support for method data
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284 void print();
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285 void print_data_on(outputStream* st);
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286 #endif
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287 };
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