ciMethodData.hpp revision 0:a61af66fc99e
1/* 2 * Copyright 2001-2007 Sun Microsystems, Inc. All Rights Reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, 20 * CA 95054 USA or visit www.sun.com if you need additional information or 21 * have any questions. 22 * 23 */ 24 25class ciBitData; 26class ciCounterData; 27class ciJumpData; 28class ciReceiverTypeData; 29class ciRetData; 30class ciBranchData; 31class ciArrayData; 32class ciMultiBranchData; 33 34typedef ProfileData ciProfileData; 35 36class ciBitData : public BitData { 37public: 38 ciBitData(DataLayout* layout) : BitData(layout) {}; 39}; 40 41class ciCounterData : public CounterData { 42public: 43 ciCounterData(DataLayout* layout) : CounterData(layout) {}; 44}; 45 46class ciJumpData : public JumpData { 47public: 48 ciJumpData(DataLayout* layout) : JumpData(layout) {}; 49}; 50 51class ciReceiverTypeData : public ReceiverTypeData { 52public: 53 ciReceiverTypeData(DataLayout* layout) : ReceiverTypeData(layout) {}; 54 55 void set_receiver(uint row, ciKlass* recv) { 56 assert((uint)row < row_limit(), "oob"); 57 set_intptr_at(receiver0_offset + row * receiver_type_row_cell_count, 58 (intptr_t) recv); 59 } 60 61 ciKlass* receiver(uint row) { 62 assert((uint)row < row_limit(), "oob"); 63 ciObject* recv = (ciObject*)intptr_at(receiver0_offset + row * receiver_type_row_cell_count); 64 assert(recv == NULL || recv->is_klass(), "wrong type"); 65 return (ciKlass*)recv; 66 } 67 68 // Copy & translate from oop based ReceiverTypeData 69 virtual void translate_from(ProfileData* data) { 70 translate_receiver_data_from(data); 71 } 72 void translate_receiver_data_from(ProfileData* data); 73#ifndef PRODUCT 74 void print_data_on(outputStream* st); 75 void print_receiver_data_on(outputStream* st); 76#endif 77}; 78 79class ciVirtualCallData : public VirtualCallData { 80 // Fake multiple inheritance... It's a ciReceiverTypeData also. 81 ciReceiverTypeData* rtd_super() { return (ciReceiverTypeData*) this; } 82 83public: 84 ciVirtualCallData(DataLayout* layout) : VirtualCallData(layout) {}; 85 86 void set_receiver(uint row, ciKlass* recv) { 87 rtd_super()->set_receiver(row, recv); 88 } 89 90 ciKlass* receiver(uint row) { 91 return rtd_super()->receiver(row); 92 } 93 94 // Copy & translate from oop based VirtualCallData 95 virtual void translate_from(ProfileData* data) { 96 rtd_super()->translate_receiver_data_from(data); 97 } 98#ifndef PRODUCT 99 void print_data_on(outputStream* st); 100#endif 101}; 102 103 104class ciRetData : public RetData { 105public: 106 ciRetData(DataLayout* layout) : RetData(layout) {}; 107}; 108 109class ciBranchData : public BranchData { 110public: 111 ciBranchData(DataLayout* layout) : BranchData(layout) {}; 112}; 113 114class ciArrayData : public ArrayData { 115public: 116 ciArrayData(DataLayout* layout) : ArrayData(layout) {}; 117}; 118 119class ciMultiBranchData : public MultiBranchData { 120public: 121 ciMultiBranchData(DataLayout* layout) : MultiBranchData(layout) {}; 122}; 123 124// ciMethodData 125// 126// This class represents a methodDataOop in the HotSpot virtual 127// machine. 128 129class ciMethodData : public ciObject { 130 CI_PACKAGE_ACCESS 131 132private: 133 // Size in bytes 134 int _data_size; 135 int _extra_data_size; 136 137 // Data entries 138 intptr_t* _data; 139 140 // Cached hint for data_before() 141 int _hint_di; 142 143 // Is data attached? And is it mature? 144 enum { empty_state, immature_state, mature_state }; 145 u_char _state; 146 147 // Set this true if empty extra_data slots are ever witnessed. 148 u_char _saw_free_extra_data; 149 150 // Support for interprocedural escape analysis 151 intx _eflags; // flags on escape information 152 intx _arg_local; // bit set of non-escaping arguments 153 intx _arg_stack; // bit set of stack-allocatable arguments 154 intx _arg_returned; // bit set of returned arguments 155 156 // Maturity of the oop when the snapshot is taken. 157 int _current_mileage; 158 159 // Coherent snapshot of original header. 160 methodDataOopDesc _orig; 161 162 ciMethodData(methodDataHandle h_md); 163 ciMethodData(); 164 165 // Accessors 166 int data_size() { return _data_size; } 167 int extra_data_size() { return _extra_data_size; } 168 intptr_t * data() { return _data; } 169 170 methodDataOop get_methodDataOop() const { 171 if (handle() == NULL) return NULL; 172 methodDataOop mdo = (methodDataOop)get_oop(); 173 assert(mdo != NULL, "illegal use of unloaded method data"); 174 return mdo; 175 } 176 177 const char* type_string() { return "ciMethodData"; } 178 179 void print_impl(outputStream* st); 180 181 DataLayout* data_layout_at(int data_index) { 182 assert(data_index % sizeof(intptr_t) == 0, "unaligned"); 183 return (DataLayout*) (((address)_data) + data_index); 184 } 185 186 bool out_of_bounds(int data_index) { 187 return data_index >= data_size(); 188 } 189 190 // hint accessors 191 int hint_di() const { return _hint_di; } 192 void set_hint_di(int di) { 193 assert(!out_of_bounds(di), "hint_di out of bounds"); 194 _hint_di = di; 195 } 196 ciProfileData* data_before(int bci) { 197 // avoid SEGV on this edge case 198 if (data_size() == 0) 199 return NULL; 200 int hint = hint_di(); 201 if (data_layout_at(hint)->bci() <= bci) 202 return data_at(hint); 203 return first_data(); 204 } 205 206 207 // What is the index of the first data entry? 208 int first_di() { return 0; } 209 210public: 211 bool is_method_data() { return true; } 212 bool is_empty() { return _state == empty_state; } 213 bool is_mature() { return _state == mature_state; } 214 215 int creation_mileage() { return _orig.creation_mileage(); } 216 int current_mileage() { return _current_mileage; } 217 218 void load_data(); 219 220 // Convert a dp (data pointer) to a di (data index). 221 int dp_to_di(address dp) { 222 return dp - ((address)_data); 223 } 224 225 // Get the data at an arbitrary (sort of) data index. 226 ciProfileData* data_at(int data_index); 227 228 // Walk through the data in order. 229 ciProfileData* first_data() { return data_at(first_di()); } 230 ciProfileData* next_data(ciProfileData* current); 231 bool is_valid(ciProfileData* current) { return current != NULL; } 232 233 // Get the data at an arbitrary bci, or NULL if there is none. 234 ciProfileData* bci_to_data(int bci); 235 ciProfileData* bci_to_extra_data(int bci, bool create_if_missing); 236 237 uint overflow_trap_count() const { 238 return _orig.overflow_trap_count(); 239 } 240 uint overflow_recompile_count() const { 241 return _orig.overflow_recompile_count(); 242 } 243 uint decompile_count() const { 244 return _orig.decompile_count(); 245 } 246 uint trap_count(int reason) const { 247 return _orig.trap_count(reason); 248 } 249 uint trap_reason_limit() const { return _orig.trap_reason_limit(); } 250 uint trap_count_limit() const { return _orig.trap_count_limit(); } 251 252 // Helpful query functions that decode trap_state. 253 int has_trap_at(ciProfileData* data, int reason); 254 int has_trap_at(int bci, int reason) { 255 return has_trap_at(bci_to_data(bci), reason); 256 } 257 int trap_recompiled_at(ciProfileData* data); 258 int trap_recompiled_at(int bci) { 259 return trap_recompiled_at(bci_to_data(bci)); 260 } 261 262 void clear_escape_info(); 263 bool has_escape_info(); 264 void update_escape_info(); 265 266 void set_eflag(methodDataOopDesc::EscapeFlag f); 267 void clear_eflag(methodDataOopDesc::EscapeFlag f); 268 bool eflag_set(methodDataOopDesc::EscapeFlag f) const; 269 270 void set_arg_local(int i); 271 void set_arg_stack(int i); 272 void set_arg_returned(int i); 273 274 bool is_arg_local(int i) const; 275 bool is_arg_stack(int i) const; 276 bool is_arg_returned(int i) const; 277 278 // Code generation helper 279 ByteSize offset_of_slot(ciProfileData* data, ByteSize slot_offset_in_data); 280 int byte_offset_of_slot(ciProfileData* data, ByteSize slot_offset_in_data) { return in_bytes(offset_of_slot(data, slot_offset_in_data)); } 281 282#ifndef PRODUCT 283 // printing support for method data 284 void print(); 285 void print_data_on(outputStream* st); 286#endif 287}; 288