Mercurial > hg > graal-compiler
annotate src/share/vm/runtime/vframe.hpp @ 18096:ca6d25be853b jdk8u25-b13
8044269: Analysis of archive files.
Summary: Add checksum verification.
Reviewed-by: iklam, dholmes, mschoene
| author | jiangli |
|---|---|
| date | Tue, 12 Aug 2014 17:46:16 -0400 |
| parents | 78bbf4d43a14 |
| children | 52b4284cb496 c204e2044c29 |
| rev | line source |
|---|---|
| 0 | 1 /* |
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2 * Copyright (c) 1997, 2014, Oracle and/or its affiliates. All rights reserved. |
| 0 | 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 * | |
|
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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. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 1972 | 25 #ifndef SHARE_VM_RUNTIME_VFRAME_HPP |
| 26 #define SHARE_VM_RUNTIME_VFRAME_HPP | |
| 27 | |
| 28 #include "code/debugInfo.hpp" | |
| 29 #include "code/debugInfoRec.hpp" | |
| 30 #include "code/location.hpp" | |
| 31 #include "oops/oop.hpp" | |
| 32 #include "runtime/frame.hpp" | |
| 33 #include "runtime/frame.inline.hpp" | |
| 34 #include "runtime/stackValue.hpp" | |
| 35 #include "runtime/stackValueCollection.hpp" | |
| 36 #include "utilities/growableArray.hpp" | |
| 37 | |
| 0 | 38 // vframes are virtual stack frames representing source level activations. |
| 39 // A single frame may hold several source level activations in the case of | |
| 40 // optimized code. The debugging stored with the optimized code enables | |
| 41 // us to unfold a frame as a stack of vframes. | |
| 42 // A cVFrame represents an activation of a non-java method. | |
| 43 | |
| 44 // The vframe inheritance hierarchy: | |
| 45 // - vframe | |
| 46 // - javaVFrame | |
| 47 // - interpretedVFrame | |
| 48 // - compiledVFrame ; (used for both compiled Java methods and native stubs) | |
| 49 // - externalVFrame | |
| 50 // - entryVFrame ; special frame created when calling Java from C | |
| 51 | |
| 52 // - BasicLock | |
| 53 | |
| 54 class vframe: public ResourceObj { | |
| 55 protected: | |
| 56 frame _fr; // Raw frame behind the virtual frame. | |
| 57 RegisterMap _reg_map; // Register map for the raw frame (used to handle callee-saved registers). | |
| 58 JavaThread* _thread; // The thread owning the raw frame. | |
| 59 | |
| 60 vframe(const frame* fr, const RegisterMap* reg_map, JavaThread* thread); | |
| 61 vframe(const frame* fr, JavaThread* thread); | |
| 62 public: | |
| 63 // Factory method for creating vframes | |
| 64 static vframe* new_vframe(const frame* f, const RegisterMap *reg_map, JavaThread* thread); | |
| 65 | |
| 66 // Accessors | |
| 67 frame fr() const { return _fr; } | |
| 68 CodeBlob* cb() const { return _fr.cb(); } | |
| 69 nmethod* nm() const { | |
| 70 assert( cb() != NULL && cb()->is_nmethod(), "usage"); | |
| 71 return (nmethod*) cb(); | |
| 72 } | |
| 73 | |
| 74 // ???? Does this need to be a copy? | |
| 75 frame* frame_pointer() { return &_fr; } | |
| 76 const RegisterMap* register_map() const { return &_reg_map; } | |
| 77 JavaThread* thread() const { return _thread; } | |
| 78 | |
| 79 // Returns the sender vframe | |
| 80 virtual vframe* sender() const; | |
| 81 | |
| 82 // Returns the next javaVFrame on the stack (skipping all other kinds of frame) | |
| 83 javaVFrame *java_sender() const; | |
| 84 | |
| 85 // Answers if the this is the top vframe in the frame, i.e., if the sender vframe | |
| 86 // is in the caller frame | |
| 87 virtual bool is_top() const { return true; } | |
| 88 | |
| 89 // Returns top vframe within same frame (see is_top()) | |
| 90 virtual vframe* top() const; | |
| 91 | |
| 92 // Type testing operations | |
| 93 virtual bool is_entry_frame() const { return false; } | |
| 94 virtual bool is_java_frame() const { return false; } | |
| 95 virtual bool is_interpreted_frame() const { return false; } | |
| 96 virtual bool is_compiled_frame() const { return false; } | |
| 97 | |
| 98 #ifndef PRODUCT | |
| 99 // printing operations | |
| 100 virtual void print_value() const; | |
| 101 virtual void print(); | |
| 102 #endif | |
| 103 }; | |
| 104 | |
| 105 | |
| 106 class javaVFrame: public vframe { | |
| 107 public: | |
| 108 // JVM state | |
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109 virtual Method* method() const = 0; |
| 0 | 110 virtual int bci() const = 0; |
| 111 virtual StackValueCollection* locals() const = 0; | |
| 112 virtual StackValueCollection* expressions() const = 0; | |
| 113 // the order returned by monitors() is from oldest -> youngest#4418568 | |
| 114 virtual GrowableArray<MonitorInfo*>* monitors() const = 0; | |
| 115 | |
| 116 // Debugging support via JVMTI. | |
| 117 // NOTE that this is not guaranteed to give correct results for compiled vframes. | |
| 118 // Deoptimize first if necessary. | |
| 119 virtual void set_locals(StackValueCollection* values) const = 0; | |
| 120 | |
| 121 // Test operation | |
| 122 bool is_java_frame() const { return true; } | |
| 123 | |
| 124 protected: | |
| 125 javaVFrame(const frame* fr, const RegisterMap* reg_map, JavaThread* thread) : vframe(fr, reg_map, thread) {} | |
| 126 javaVFrame(const frame* fr, JavaThread* thread) : vframe(fr, thread) {} | |
| 127 | |
| 128 public: | |
| 129 // casting | |
| 130 static javaVFrame* cast(vframe* vf) { | |
| 131 assert(vf == NULL || vf->is_java_frame(), "must be java frame"); | |
| 132 return (javaVFrame*) vf; | |
| 133 } | |
| 134 | |
| 135 // Return an array of monitors locked by this frame in the youngest to oldest order | |
| 136 GrowableArray<MonitorInfo*>* locked_monitors(); | |
| 137 | |
| 138 // printing used during stack dumps | |
| 139 void print_lock_info_on(outputStream* st, int frame_count); | |
| 140 void print_lock_info(int frame_count) { print_lock_info_on(tty, frame_count); } | |
| 141 | |
| 142 #ifndef PRODUCT | |
| 143 public: | |
| 144 // printing operations | |
| 145 void print(); | |
| 146 void print_value() const; | |
| 147 void print_activation(int index) const; | |
| 148 | |
| 149 // verify operations | |
| 150 virtual void verify() const; | |
| 151 | |
| 152 // Structural compare | |
| 153 bool structural_compare(javaVFrame* other); | |
| 154 #endif | |
| 155 friend class vframe; | |
| 156 }; | |
| 157 | |
| 158 class interpretedVFrame: public javaVFrame { | |
| 159 public: | |
| 160 // JVM state | |
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161 Method* method() const; |
| 0 | 162 int bci() const; |
| 163 StackValueCollection* locals() const; | |
| 164 StackValueCollection* expressions() const; | |
| 165 GrowableArray<MonitorInfo*>* monitors() const; | |
| 166 | |
| 167 void set_locals(StackValueCollection* values) const; | |
| 168 | |
| 169 // Test operation | |
| 170 bool is_interpreted_frame() const { return true; } | |
| 171 | |
| 172 protected: | |
| 173 interpretedVFrame(const frame* fr, const RegisterMap* reg_map, JavaThread* thread) : javaVFrame(fr, reg_map, thread) {}; | |
| 174 | |
| 175 public: | |
| 176 // Accessors for Byte Code Pointer | |
| 177 u_char* bcp() const; | |
| 178 void set_bcp(u_char* bcp); | |
| 179 | |
| 180 // casting | |
| 181 static interpretedVFrame* cast(vframe* vf) { | |
| 182 assert(vf == NULL || vf->is_interpreted_frame(), "must be interpreted frame"); | |
| 183 return (interpretedVFrame*) vf; | |
| 184 } | |
| 185 | |
| 186 private: | |
| 187 static const int bcp_offset; | |
| 188 intptr_t* locals_addr_at(int offset) const; | |
| 189 | |
| 190 // returns where the parameters starts relative to the frame pointer | |
| 191 int start_of_parameters() const; | |
| 192 | |
| 193 #ifndef PRODUCT | |
| 194 public: | |
| 195 // verify operations | |
| 196 void verify() const; | |
| 197 #endif | |
| 198 friend class vframe; | |
| 199 }; | |
| 200 | |
| 201 | |
| 202 class externalVFrame: public vframe { | |
| 203 protected: | |
| 204 externalVFrame(const frame* fr, const RegisterMap* reg_map, JavaThread* thread) : vframe(fr, reg_map, thread) {} | |
| 205 | |
| 206 #ifndef PRODUCT | |
| 207 public: | |
| 208 // printing operations | |
| 209 void print_value() const; | |
| 210 void print(); | |
| 211 #endif | |
| 212 friend class vframe; | |
| 213 }; | |
| 214 | |
| 215 class entryVFrame: public externalVFrame { | |
| 216 public: | |
| 217 bool is_entry_frame() const { return true; } | |
| 218 | |
| 219 protected: | |
| 220 entryVFrame(const frame* fr, const RegisterMap* reg_map, JavaThread* thread); | |
| 221 | |
| 222 public: | |
| 223 // casting | |
| 224 static entryVFrame* cast(vframe* vf) { | |
| 225 assert(vf == NULL || vf->is_entry_frame(), "must be entry frame"); | |
| 226 return (entryVFrame*) vf; | |
| 227 } | |
| 228 | |
| 229 #ifndef PRODUCT | |
| 230 public: | |
| 231 // printing | |
| 232 void print_value() const; | |
| 233 void print(); | |
| 234 #endif | |
| 235 friend class vframe; | |
| 236 }; | |
| 237 | |
| 238 | |
| 239 // A MonitorInfo is a ResourceObject that describes a the pair: | |
| 240 // 1) the owner of the monitor | |
| 241 // 2) the monitor lock | |
| 242 class MonitorInfo : public ResourceObj { | |
| 243 private: | |
| 244 oop _owner; // the object owning the monitor | |
| 245 BasicLock* _lock; | |
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246 oop _owner_klass; // klass (mirror) if owner was scalar replaced |
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247 bool _eliminated; |
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248 bool _owner_is_scalar_replaced; |
| 0 | 249 public: |
| 250 // Constructor | |
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251 MonitorInfo(oop owner, BasicLock* lock, bool eliminated, bool owner_is_scalar_replaced) { |
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252 if (!owner_is_scalar_replaced) { |
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253 _owner = owner; |
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254 _owner_klass = NULL; |
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255 } else { |
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256 assert(eliminated, "monitor should be eliminated for scalar replaced object"); |
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257 _owner = NULL; |
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258 _owner_klass = owner; |
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259 } |
| 0 | 260 _lock = lock; |
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261 _eliminated = eliminated; |
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262 _owner_is_scalar_replaced = owner_is_scalar_replaced; |
| 0 | 263 } |
| 264 // Accessors | |
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265 oop owner() const { |
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266 assert(!_owner_is_scalar_replaced, "should not be called for scalar replaced object"); |
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267 return _owner; |
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268 } |
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269 oop owner_klass() const { |
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270 assert(_owner_is_scalar_replaced, "should not be called for not scalar replaced object"); |
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271 return _owner_klass; |
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272 } |
| 0 | 273 BasicLock* lock() const { return _lock; } |
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274 bool eliminated() const { return _eliminated; } |
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275 bool owner_is_scalar_replaced() const { return _owner_is_scalar_replaced; } |
| 0 | 276 }; |
| 277 | |
| 278 class vframeStreamCommon : StackObj { | |
| 279 protected: | |
| 280 // common | |
| 281 frame _frame; | |
| 282 JavaThread* _thread; | |
| 283 RegisterMap _reg_map; | |
| 284 enum { interpreted_mode, compiled_mode, at_end_mode } _mode; | |
| 285 | |
| 286 int _sender_decode_offset; | |
| 287 | |
| 288 // Cached information | |
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289 Method* _method; |
| 0 | 290 int _bci; |
| 291 | |
| 292 // Should VM activations be ignored or not | |
| 293 bool _stop_at_java_call_stub; | |
| 294 | |
| 295 bool fill_in_compiled_inlined_sender(); | |
| 296 void fill_from_compiled_frame(int decode_offset); | |
| 297 void fill_from_compiled_native_frame(); | |
| 298 | |
| 299 void found_bad_method_frame(); | |
| 300 | |
| 301 void fill_from_interpreter_frame(); | |
| 302 bool fill_from_frame(); | |
| 303 | |
| 304 // Helper routine for security_get_caller_frame | |
| 305 void skip_prefixed_method_and_wrappers(); | |
| 306 | |
| 307 public: | |
| 308 // Constructor | |
| 309 vframeStreamCommon(JavaThread* thread) : _reg_map(thread, false) { | |
| 310 _thread = thread; | |
| 311 } | |
| 312 | |
| 313 // Accessors | |
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314 Method* method() const { return _method; } |
| 0 | 315 int bci() const { return _bci; } |
| 316 intptr_t* frame_id() const { return _frame.id(); } | |
| 317 address frame_pc() const { return _frame.pc(); } | |
| 318 | |
| 319 CodeBlob* cb() const { return _frame.cb(); } | |
| 320 nmethod* nm() const { | |
| 321 assert( cb() != NULL && cb()->is_nmethod(), "usage"); | |
| 322 return (nmethod*) cb(); | |
| 323 } | |
| 324 | |
| 325 // Frame type | |
| 326 bool is_interpreted_frame() const { return _frame.is_interpreted_frame(); } | |
| 327 bool is_entry_frame() const { return _frame.is_entry_frame(); } | |
| 328 | |
| 329 // Iteration | |
| 330 void next() { | |
| 331 // handle frames with inlining | |
| 332 if (_mode == compiled_mode && fill_in_compiled_inlined_sender()) return; | |
| 333 | |
| 334 // handle general case | |
| 335 do { | |
| 336 _frame = _frame.sender(&_reg_map); | |
| 337 } while (!fill_from_frame()); | |
| 338 } | |
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339 void security_next(); |
| 0 | 340 |
| 341 bool at_end() const { return _mode == at_end_mode; } | |
| 342 | |
| 343 // Implements security traversal. Skips depth no. of frame including | |
| 344 // special security frames and prefixed native methods | |
| 345 void security_get_caller_frame(int depth); | |
| 346 | |
| 347 // Helper routine for JVM_LatestUserDefinedLoader -- needed for 1.4 | |
| 348 // reflection implementation | |
| 349 void skip_reflection_related_frames(); | |
| 350 }; | |
| 351 | |
| 352 class vframeStream : public vframeStreamCommon { | |
| 353 public: | |
| 354 // Constructors | |
| 355 vframeStream(JavaThread* thread, bool stop_at_java_call_stub = false) | |
| 356 : vframeStreamCommon(thread) { | |
| 357 _stop_at_java_call_stub = stop_at_java_call_stub; | |
| 358 | |
| 359 if (!thread->has_last_Java_frame()) { | |
| 360 _mode = at_end_mode; | |
| 361 return; | |
| 362 } | |
| 363 | |
| 364 _frame = _thread->last_frame(); | |
| 365 while (!fill_from_frame()) { | |
| 366 _frame = _frame.sender(&_reg_map); | |
| 367 } | |
| 368 } | |
| 369 | |
| 370 // top_frame may not be at safepoint, start with sender | |
| 371 vframeStream(JavaThread* thread, frame top_frame, bool stop_at_java_call_stub = false); | |
| 372 }; | |
| 373 | |
| 374 | |
| 375 inline bool vframeStreamCommon::fill_in_compiled_inlined_sender() { | |
| 376 if (_sender_decode_offset == DebugInformationRecorder::serialized_null) { | |
| 377 return false; | |
| 378 } | |
| 379 fill_from_compiled_frame(_sender_decode_offset); | |
| 380 return true; | |
| 381 } | |
| 382 | |
| 383 | |
| 384 inline void vframeStreamCommon::fill_from_compiled_frame(int decode_offset) { | |
| 385 _mode = compiled_mode; | |
| 386 | |
| 387 // Range check to detect ridiculous offsets. | |
| 388 if (decode_offset == DebugInformationRecorder::serialized_null || | |
| 389 decode_offset < 0 || | |
| 390 decode_offset >= nm()->scopes_data_size()) { | |
| 391 // 6379830 AsyncGetCallTrace sometimes feeds us wild frames. | |
| 392 // If we attempt to read nmethod::scopes_data at serialized_null (== 0), | |
| 393 // or if we read some at other crazy offset, | |
| 394 // we will decode garbage and make wild references into the heap, | |
| 395 // leading to crashes in product mode. | |
| 396 // (This isn't airtight, of course, since there are internal | |
| 397 // offsets which are also crazy.) | |
| 398 #ifdef ASSERT | |
| 399 if (WizardMode) { | |
| 400 tty->print_cr("Error in fill_from_frame: pc_desc for " | |
| 401 INTPTR_FORMAT " not found or invalid at %d", | |
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402 p2i(_frame.pc()), decode_offset); |
| 0 | 403 nm()->print(); |
| 404 nm()->method()->print_codes(); | |
| 405 nm()->print_code(); | |
| 406 nm()->print_pcs(); | |
| 407 } | |
| 408 #endif | |
| 409 // Provide a cheap fallback in product mode. (See comment above.) | |
| 410 found_bad_method_frame(); | |
| 411 fill_from_compiled_native_frame(); | |
| 412 return; | |
| 413 } | |
| 414 | |
| 415 // Decode first part of scopeDesc | |
| 416 DebugInfoReadStream buffer(nm(), decode_offset); | |
| 417 _sender_decode_offset = buffer.read_int(); | |
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418 _method = buffer.read_method(); |
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419 _bci = buffer.read_bci(); |
| 0 | 420 |
| 421 assert(_method->is_method(), "checking type of decoded method"); | |
| 422 } | |
| 423 | |
| 424 // The native frames are handled specially. We do not rely on ScopeDesc info | |
| 425 // since the pc might not be exact due to the _last_native_pc trick. | |
| 426 inline void vframeStreamCommon::fill_from_compiled_native_frame() { | |
| 427 _mode = compiled_mode; | |
| 428 _sender_decode_offset = DebugInformationRecorder::serialized_null; | |
| 429 _method = nm()->method(); | |
| 430 _bci = 0; | |
| 431 } | |
| 432 | |
| 433 inline bool vframeStreamCommon::fill_from_frame() { | |
| 434 // Interpreted frame | |
| 435 if (_frame.is_interpreted_frame()) { | |
| 436 fill_from_interpreter_frame(); | |
| 437 return true; | |
| 438 } | |
| 439 | |
| 440 // Compiled frame | |
| 441 | |
| 442 if (cb() != NULL && cb()->is_nmethod()) { | |
| 443 if (nm()->is_native_method()) { | |
| 444 // Do not rely on scopeDesc since the pc might be unprecise due to the _last_native_pc trick. | |
| 445 fill_from_compiled_native_frame(); | |
| 446 } else { | |
| 447 PcDesc* pc_desc = nm()->pc_desc_at(_frame.pc()); | |
| 448 int decode_offset; | |
| 449 if (pc_desc == NULL) { | |
| 450 // Should not happen, but let fill_from_compiled_frame handle it. | |
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451 |
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452 // If we are trying to walk the stack of a thread that is not |
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453 // at a safepoint (like AsyncGetCallTrace would do) then this is an |
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454 // acceptable result. [ This is assuming that safe_for_sender |
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455 // is so bullet proof that we can trust the frames it produced. ] |
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456 // |
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457 // So if we see that the thread is not safepoint safe |
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458 // then simply produce the method and a bci of zero |
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459 // and skip the possibility of decoding any inlining that |
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460 // may be present. That is far better than simply stopping (or |
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461 // asserting. If however the thread is safepoint safe this |
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462 // is the sign of a compiler bug and we'll let |
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463 // fill_from_compiled_frame handle it. |
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464 |
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465 |
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466 JavaThreadState state = _thread->thread_state(); |
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467 |
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468 // in_Java should be good enough to test safepoint safety |
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469 // if state were say in_Java_trans then we'd expect that |
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470 // the pc would have already been slightly adjusted to |
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471 // one that would produce a pcDesc since the trans state |
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472 // would be one that might in fact anticipate a safepoint |
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473 |
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474 if (state == _thread_in_Java ) { |
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475 // This will get a method a zero bci and no inlining. |
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476 // Might be nice to have a unique bci to signify this |
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477 // particular case but for now zero will do. |
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478 |
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479 fill_from_compiled_native_frame(); |
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480 |
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481 // There is something to be said for setting the mode to |
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482 // at_end_mode to prevent trying to walk further up the |
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483 // stack. There is evidence that if we walk any further |
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484 // that we could produce a bad stack chain. However until |
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485 // we see evidence that allowing this causes us to find |
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486 // frames bad enough to cause segv's or assertion failures |
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487 // we don't do it as while we may get a bad call chain the |
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488 // probability is much higher (several magnitudes) that we |
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489 // get good data. |
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490 |
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491 return true; |
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492 } |
| 0 | 493 decode_offset = DebugInformationRecorder::serialized_null; |
| 494 } else { | |
| 495 decode_offset = pc_desc->scope_decode_offset(); | |
| 496 } | |
| 497 fill_from_compiled_frame(decode_offset); | |
| 498 } | |
| 499 return true; | |
| 500 } | |
| 501 | |
| 502 // End of stack? | |
| 503 if (_frame.is_first_frame() || (_stop_at_java_call_stub && _frame.is_entry_frame())) { | |
| 504 _mode = at_end_mode; | |
| 505 return true; | |
| 506 } | |
| 507 | |
| 508 return false; | |
| 509 } | |
| 510 | |
| 511 | |
| 512 inline void vframeStreamCommon::fill_from_interpreter_frame() { | |
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513 Method* method = _frame.interpreter_frame_method(); |
| 0 | 514 intptr_t bcx = _frame.interpreter_frame_bcx(); |
| 515 int bci = method->validate_bci_from_bcx(bcx); | |
| 516 // 6379830 AsyncGetCallTrace sometimes feeds us wild frames. | |
| 517 if (bci < 0) { | |
| 518 found_bad_method_frame(); | |
| 519 bci = 0; // pretend it's on the point of entering | |
| 520 } | |
| 521 _mode = interpreted_mode; | |
| 522 _method = method; | |
| 523 _bci = bci; | |
| 524 } | |
| 1972 | 525 |
| 526 #endif // SHARE_VM_RUNTIME_VFRAME_HPP |