Mon, 26 Apr 2010 23:59:45 -0700
6943485: JVMTI always on capabilities change code generation too much
Reviewed-by: twisti, dcubed
duke@435 | 1 | /* |
xdono@631 | 2 | * Copyright 2001-2008 Sun Microsystems, Inc. All Rights Reserved. |
duke@435 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
duke@435 | 4 | * |
duke@435 | 5 | * This code is free software; you can redistribute it and/or modify it |
duke@435 | 6 | * under the terms of the GNU General Public License version 2 only, as |
duke@435 | 7 | * published by the Free Software Foundation. |
duke@435 | 8 | * |
duke@435 | 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
duke@435 | 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
duke@435 | 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
duke@435 | 12 | * version 2 for more details (a copy is included in the LICENSE file that |
duke@435 | 13 | * accompanied this code). |
duke@435 | 14 | * |
duke@435 | 15 | * You should have received a copy of the GNU General Public License version |
duke@435 | 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
duke@435 | 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
duke@435 | 18 | * |
duke@435 | 19 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
duke@435 | 20 | * CA 95054 USA or visit www.sun.com if you need additional information or |
duke@435 | 21 | * have any questions. |
duke@435 | 22 | * |
duke@435 | 23 | */ |
duke@435 | 24 | |
duke@435 | 25 | class ciBitData; |
duke@435 | 26 | class ciCounterData; |
duke@435 | 27 | class ciJumpData; |
duke@435 | 28 | class ciReceiverTypeData; |
duke@435 | 29 | class ciRetData; |
duke@435 | 30 | class ciBranchData; |
duke@435 | 31 | class ciArrayData; |
duke@435 | 32 | class ciMultiBranchData; |
kvn@480 | 33 | class ciArgInfoData; |
duke@435 | 34 | |
duke@435 | 35 | typedef ProfileData ciProfileData; |
duke@435 | 36 | |
duke@435 | 37 | class ciBitData : public BitData { |
duke@435 | 38 | public: |
duke@435 | 39 | ciBitData(DataLayout* layout) : BitData(layout) {}; |
duke@435 | 40 | }; |
duke@435 | 41 | |
duke@435 | 42 | class ciCounterData : public CounterData { |
duke@435 | 43 | public: |
duke@435 | 44 | ciCounterData(DataLayout* layout) : CounterData(layout) {}; |
duke@435 | 45 | }; |
duke@435 | 46 | |
duke@435 | 47 | class ciJumpData : public JumpData { |
duke@435 | 48 | public: |
duke@435 | 49 | ciJumpData(DataLayout* layout) : JumpData(layout) {}; |
duke@435 | 50 | }; |
duke@435 | 51 | |
duke@435 | 52 | class ciReceiverTypeData : public ReceiverTypeData { |
duke@435 | 53 | public: |
duke@435 | 54 | ciReceiverTypeData(DataLayout* layout) : ReceiverTypeData(layout) {}; |
duke@435 | 55 | |
duke@435 | 56 | void set_receiver(uint row, ciKlass* recv) { |
duke@435 | 57 | assert((uint)row < row_limit(), "oob"); |
duke@435 | 58 | set_intptr_at(receiver0_offset + row * receiver_type_row_cell_count, |
duke@435 | 59 | (intptr_t) recv); |
duke@435 | 60 | } |
duke@435 | 61 | |
duke@435 | 62 | ciKlass* receiver(uint row) { |
duke@435 | 63 | assert((uint)row < row_limit(), "oob"); |
duke@435 | 64 | ciObject* recv = (ciObject*)intptr_at(receiver0_offset + row * receiver_type_row_cell_count); |
duke@435 | 65 | assert(recv == NULL || recv->is_klass(), "wrong type"); |
duke@435 | 66 | return (ciKlass*)recv; |
duke@435 | 67 | } |
duke@435 | 68 | |
duke@435 | 69 | // Copy & translate from oop based ReceiverTypeData |
duke@435 | 70 | virtual void translate_from(ProfileData* data) { |
duke@435 | 71 | translate_receiver_data_from(data); |
duke@435 | 72 | } |
duke@435 | 73 | void translate_receiver_data_from(ProfileData* data); |
duke@435 | 74 | #ifndef PRODUCT |
duke@435 | 75 | void print_data_on(outputStream* st); |
duke@435 | 76 | void print_receiver_data_on(outputStream* st); |
duke@435 | 77 | #endif |
duke@435 | 78 | }; |
duke@435 | 79 | |
duke@435 | 80 | class ciVirtualCallData : public VirtualCallData { |
duke@435 | 81 | // Fake multiple inheritance... It's a ciReceiverTypeData also. |
duke@435 | 82 | ciReceiverTypeData* rtd_super() { return (ciReceiverTypeData*) this; } |
duke@435 | 83 | |
duke@435 | 84 | public: |
duke@435 | 85 | ciVirtualCallData(DataLayout* layout) : VirtualCallData(layout) {}; |
duke@435 | 86 | |
duke@435 | 87 | void set_receiver(uint row, ciKlass* recv) { |
duke@435 | 88 | rtd_super()->set_receiver(row, recv); |
duke@435 | 89 | } |
duke@435 | 90 | |
duke@435 | 91 | ciKlass* receiver(uint row) { |
duke@435 | 92 | return rtd_super()->receiver(row); |
duke@435 | 93 | } |
duke@435 | 94 | |
duke@435 | 95 | // Copy & translate from oop based VirtualCallData |
duke@435 | 96 | virtual void translate_from(ProfileData* data) { |
duke@435 | 97 | rtd_super()->translate_receiver_data_from(data); |
duke@435 | 98 | } |
duke@435 | 99 | #ifndef PRODUCT |
duke@435 | 100 | void print_data_on(outputStream* st); |
duke@435 | 101 | #endif |
duke@435 | 102 | }; |
duke@435 | 103 | |
duke@435 | 104 | |
duke@435 | 105 | class ciRetData : public RetData { |
duke@435 | 106 | public: |
duke@435 | 107 | ciRetData(DataLayout* layout) : RetData(layout) {}; |
duke@435 | 108 | }; |
duke@435 | 109 | |
duke@435 | 110 | class ciBranchData : public BranchData { |
duke@435 | 111 | public: |
duke@435 | 112 | ciBranchData(DataLayout* layout) : BranchData(layout) {}; |
duke@435 | 113 | }; |
duke@435 | 114 | |
duke@435 | 115 | class ciArrayData : public ArrayData { |
duke@435 | 116 | public: |
duke@435 | 117 | ciArrayData(DataLayout* layout) : ArrayData(layout) {}; |
duke@435 | 118 | }; |
duke@435 | 119 | |
duke@435 | 120 | class ciMultiBranchData : public MultiBranchData { |
duke@435 | 121 | public: |
duke@435 | 122 | ciMultiBranchData(DataLayout* layout) : MultiBranchData(layout) {}; |
duke@435 | 123 | }; |
duke@435 | 124 | |
kvn@480 | 125 | class ciArgInfoData : public ArgInfoData { |
kvn@480 | 126 | public: |
kvn@480 | 127 | ciArgInfoData(DataLayout* layout) : ArgInfoData(layout) {}; |
kvn@480 | 128 | }; |
kvn@480 | 129 | |
duke@435 | 130 | // ciMethodData |
duke@435 | 131 | // |
duke@435 | 132 | // This class represents a methodDataOop in the HotSpot virtual |
duke@435 | 133 | // machine. |
duke@435 | 134 | |
duke@435 | 135 | class ciMethodData : public ciObject { |
duke@435 | 136 | CI_PACKAGE_ACCESS |
duke@435 | 137 | |
duke@435 | 138 | private: |
duke@435 | 139 | // Size in bytes |
duke@435 | 140 | int _data_size; |
duke@435 | 141 | int _extra_data_size; |
duke@435 | 142 | |
duke@435 | 143 | // Data entries |
duke@435 | 144 | intptr_t* _data; |
duke@435 | 145 | |
duke@435 | 146 | // Cached hint for data_before() |
duke@435 | 147 | int _hint_di; |
duke@435 | 148 | |
duke@435 | 149 | // Is data attached? And is it mature? |
duke@435 | 150 | enum { empty_state, immature_state, mature_state }; |
duke@435 | 151 | u_char _state; |
duke@435 | 152 | |
duke@435 | 153 | // Set this true if empty extra_data slots are ever witnessed. |
duke@435 | 154 | u_char _saw_free_extra_data; |
duke@435 | 155 | |
duke@435 | 156 | // Support for interprocedural escape analysis |
duke@435 | 157 | intx _eflags; // flags on escape information |
duke@435 | 158 | intx _arg_local; // bit set of non-escaping arguments |
duke@435 | 159 | intx _arg_stack; // bit set of stack-allocatable arguments |
duke@435 | 160 | intx _arg_returned; // bit set of returned arguments |
duke@435 | 161 | |
duke@435 | 162 | // Maturity of the oop when the snapshot is taken. |
duke@435 | 163 | int _current_mileage; |
duke@435 | 164 | |
duke@435 | 165 | // Coherent snapshot of original header. |
duke@435 | 166 | methodDataOopDesc _orig; |
duke@435 | 167 | |
duke@435 | 168 | ciMethodData(methodDataHandle h_md); |
duke@435 | 169 | ciMethodData(); |
duke@435 | 170 | |
duke@435 | 171 | // Accessors |
kvn@480 | 172 | int data_size() const { return _data_size; } |
kvn@480 | 173 | int extra_data_size() const { return _extra_data_size; } |
kvn@480 | 174 | intptr_t * data() const { return _data; } |
duke@435 | 175 | |
duke@435 | 176 | methodDataOop get_methodDataOop() const { |
duke@435 | 177 | if (handle() == NULL) return NULL; |
duke@435 | 178 | methodDataOop mdo = (methodDataOop)get_oop(); |
duke@435 | 179 | assert(mdo != NULL, "illegal use of unloaded method data"); |
duke@435 | 180 | return mdo; |
duke@435 | 181 | } |
duke@435 | 182 | |
duke@435 | 183 | const char* type_string() { return "ciMethodData"; } |
duke@435 | 184 | |
duke@435 | 185 | void print_impl(outputStream* st); |
duke@435 | 186 | |
kvn@480 | 187 | DataLayout* data_layout_at(int data_index) const { |
duke@435 | 188 | assert(data_index % sizeof(intptr_t) == 0, "unaligned"); |
duke@435 | 189 | return (DataLayout*) (((address)_data) + data_index); |
duke@435 | 190 | } |
duke@435 | 191 | |
duke@435 | 192 | bool out_of_bounds(int data_index) { |
duke@435 | 193 | return data_index >= data_size(); |
duke@435 | 194 | } |
duke@435 | 195 | |
duke@435 | 196 | // hint accessors |
duke@435 | 197 | int hint_di() const { return _hint_di; } |
duke@435 | 198 | void set_hint_di(int di) { |
duke@435 | 199 | assert(!out_of_bounds(di), "hint_di out of bounds"); |
duke@435 | 200 | _hint_di = di; |
duke@435 | 201 | } |
duke@435 | 202 | ciProfileData* data_before(int bci) { |
duke@435 | 203 | // avoid SEGV on this edge case |
duke@435 | 204 | if (data_size() == 0) |
duke@435 | 205 | return NULL; |
duke@435 | 206 | int hint = hint_di(); |
duke@435 | 207 | if (data_layout_at(hint)->bci() <= bci) |
duke@435 | 208 | return data_at(hint); |
duke@435 | 209 | return first_data(); |
duke@435 | 210 | } |
duke@435 | 211 | |
duke@435 | 212 | |
duke@435 | 213 | // What is the index of the first data entry? |
duke@435 | 214 | int first_di() { return 0; } |
duke@435 | 215 | |
kvn@480 | 216 | ciArgInfoData *arg_info() const; |
kvn@480 | 217 | |
duke@435 | 218 | public: |
duke@435 | 219 | bool is_method_data() { return true; } |
duke@435 | 220 | bool is_empty() { return _state == empty_state; } |
duke@435 | 221 | bool is_mature() { return _state == mature_state; } |
duke@435 | 222 | |
duke@435 | 223 | int creation_mileage() { return _orig.creation_mileage(); } |
duke@435 | 224 | int current_mileage() { return _current_mileage; } |
duke@435 | 225 | |
duke@435 | 226 | void load_data(); |
duke@435 | 227 | |
duke@435 | 228 | // Convert a dp (data pointer) to a di (data index). |
duke@435 | 229 | int dp_to_di(address dp) { |
duke@435 | 230 | return dp - ((address)_data); |
duke@435 | 231 | } |
duke@435 | 232 | |
duke@435 | 233 | // Get the data at an arbitrary (sort of) data index. |
duke@435 | 234 | ciProfileData* data_at(int data_index); |
duke@435 | 235 | |
duke@435 | 236 | // Walk through the data in order. |
duke@435 | 237 | ciProfileData* first_data() { return data_at(first_di()); } |
duke@435 | 238 | ciProfileData* next_data(ciProfileData* current); |
duke@435 | 239 | bool is_valid(ciProfileData* current) { return current != NULL; } |
duke@435 | 240 | |
duke@435 | 241 | // Get the data at an arbitrary bci, or NULL if there is none. |
duke@435 | 242 | ciProfileData* bci_to_data(int bci); |
duke@435 | 243 | ciProfileData* bci_to_extra_data(int bci, bool create_if_missing); |
duke@435 | 244 | |
duke@435 | 245 | uint overflow_trap_count() const { |
duke@435 | 246 | return _orig.overflow_trap_count(); |
duke@435 | 247 | } |
duke@435 | 248 | uint overflow_recompile_count() const { |
duke@435 | 249 | return _orig.overflow_recompile_count(); |
duke@435 | 250 | } |
duke@435 | 251 | uint decompile_count() const { |
duke@435 | 252 | return _orig.decompile_count(); |
duke@435 | 253 | } |
duke@435 | 254 | uint trap_count(int reason) const { |
duke@435 | 255 | return _orig.trap_count(reason); |
duke@435 | 256 | } |
duke@435 | 257 | uint trap_reason_limit() const { return _orig.trap_reason_limit(); } |
duke@435 | 258 | uint trap_count_limit() const { return _orig.trap_count_limit(); } |
duke@435 | 259 | |
duke@435 | 260 | // Helpful query functions that decode trap_state. |
duke@435 | 261 | int has_trap_at(ciProfileData* data, int reason); |
duke@435 | 262 | int has_trap_at(int bci, int reason) { |
duke@435 | 263 | return has_trap_at(bci_to_data(bci), reason); |
duke@435 | 264 | } |
duke@435 | 265 | int trap_recompiled_at(ciProfileData* data); |
duke@435 | 266 | int trap_recompiled_at(int bci) { |
duke@435 | 267 | return trap_recompiled_at(bci_to_data(bci)); |
duke@435 | 268 | } |
duke@435 | 269 | |
duke@435 | 270 | void clear_escape_info(); |
duke@435 | 271 | bool has_escape_info(); |
duke@435 | 272 | void update_escape_info(); |
duke@435 | 273 | |
duke@435 | 274 | void set_eflag(methodDataOopDesc::EscapeFlag f); |
duke@435 | 275 | void clear_eflag(methodDataOopDesc::EscapeFlag f); |
duke@435 | 276 | bool eflag_set(methodDataOopDesc::EscapeFlag f) const; |
duke@435 | 277 | |
duke@435 | 278 | void set_arg_local(int i); |
duke@435 | 279 | void set_arg_stack(int i); |
duke@435 | 280 | void set_arg_returned(int i); |
kvn@480 | 281 | void set_arg_modified(int arg, uint val); |
duke@435 | 282 | |
duke@435 | 283 | bool is_arg_local(int i) const; |
duke@435 | 284 | bool is_arg_stack(int i) const; |
duke@435 | 285 | bool is_arg_returned(int i) const; |
kvn@480 | 286 | uint arg_modified(int arg) const; |
duke@435 | 287 | |
duke@435 | 288 | // Code generation helper |
duke@435 | 289 | ByteSize offset_of_slot(ciProfileData* data, ByteSize slot_offset_in_data); |
duke@435 | 290 | int byte_offset_of_slot(ciProfileData* data, ByteSize slot_offset_in_data) { return in_bytes(offset_of_slot(data, slot_offset_in_data)); } |
duke@435 | 291 | |
duke@435 | 292 | #ifndef PRODUCT |
duke@435 | 293 | // printing support for method data |
duke@435 | 294 | void print(); |
duke@435 | 295 | void print_data_on(outputStream* st); |
duke@435 | 296 | #endif |
duke@435 | 297 | }; |