Mercurial > hg > truffle
annotate src/share/vm/runtime/frame.cpp @ 2019:09b4dd4f152b
7004582: Add GetThisObject() function to JVMTI 1.2
Summary: Add 'GetThisObject' function
Reviewed-by: never, coleenp
| author | kamg |
|---|---|
| date | Thu, 09 Dec 2010 15:04:26 -0500 |
| parents | f95d63e2154a |
| children | 54f5dd2aa1d9 |
| rev | line source |
|---|---|
| 0 | 1 /* |
|
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2 * Copyright (c) 1997, 2010, 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 #include "precompiled.hpp" |
| 26 #include "gc_interface/collectedHeap.inline.hpp" | |
| 27 #include "interpreter/interpreter.hpp" | |
| 28 #include "interpreter/oopMapCache.hpp" | |
| 29 #include "memory/resourceArea.hpp" | |
| 30 #include "memory/universe.inline.hpp" | |
| 31 #include "oops/markOop.hpp" | |
| 32 #include "oops/methodDataOop.hpp" | |
| 33 #include "oops/methodOop.hpp" | |
| 34 #include "oops/oop.inline.hpp" | |
| 35 #include "oops/oop.inline2.hpp" | |
| 36 #include "runtime/frame.inline.hpp" | |
| 37 #include "runtime/handles.inline.hpp" | |
| 38 #include "runtime/javaCalls.hpp" | |
| 39 #include "runtime/monitorChunk.hpp" | |
| 40 #include "runtime/sharedRuntime.hpp" | |
| 41 #include "runtime/signature.hpp" | |
| 42 #include "runtime/stubCodeGenerator.hpp" | |
| 43 #include "runtime/stubRoutines.hpp" | |
| 44 #ifdef TARGET_ARCH_x86 | |
| 45 # include "nativeInst_x86.hpp" | |
| 46 #endif | |
| 47 #ifdef TARGET_ARCH_sparc | |
| 48 # include "nativeInst_sparc.hpp" | |
| 49 #endif | |
| 50 #ifdef TARGET_ARCH_zero | |
| 51 # include "nativeInst_zero.hpp" | |
| 52 #endif | |
| 0 | 53 |
| 54 RegisterMap::RegisterMap(JavaThread *thread, bool update_map) { | |
| 55 _thread = thread; | |
| 56 _update_map = update_map; | |
| 57 clear(); | |
| 58 debug_only(_update_for_id = NULL;) | |
| 59 #ifndef PRODUCT | |
| 60 for (int i = 0; i < reg_count ; i++ ) _location[i] = NULL; | |
| 61 #endif /* PRODUCT */ | |
| 62 } | |
| 63 | |
| 64 RegisterMap::RegisterMap(const RegisterMap* map) { | |
| 65 assert(map != this, "bad initialization parameter"); | |
| 66 assert(map != NULL, "RegisterMap must be present"); | |
| 67 _thread = map->thread(); | |
| 68 _update_map = map->update_map(); | |
| 69 _include_argument_oops = map->include_argument_oops(); | |
| 70 debug_only(_update_for_id = map->_update_for_id;) | |
| 71 pd_initialize_from(map); | |
| 72 if (update_map()) { | |
| 73 for(int i = 0; i < location_valid_size; i++) { | |
| 74 LocationValidType bits = !update_map() ? 0 : map->_location_valid[i]; | |
| 75 _location_valid[i] = bits; | |
| 76 // for whichever bits are set, pull in the corresponding map->_location | |
| 77 int j = i*location_valid_type_size; | |
| 78 while (bits != 0) { | |
| 79 if ((bits & 1) != 0) { | |
| 80 assert(0 <= j && j < reg_count, "range check"); | |
| 81 _location[j] = map->_location[j]; | |
| 82 } | |
| 83 bits >>= 1; | |
| 84 j += 1; | |
| 85 } | |
| 86 } | |
| 87 } | |
| 88 } | |
| 89 | |
| 90 void RegisterMap::clear() { | |
| 91 set_include_argument_oops(true); | |
| 92 if (_update_map) { | |
| 93 for(int i = 0; i < location_valid_size; i++) { | |
| 94 _location_valid[i] = 0; | |
| 95 } | |
| 96 pd_clear(); | |
| 97 } else { | |
| 98 pd_initialize(); | |
| 99 } | |
| 100 } | |
| 101 | |
| 102 #ifndef PRODUCT | |
| 103 | |
| 104 void RegisterMap::print_on(outputStream* st) const { | |
| 105 st->print_cr("Register map"); | |
| 106 for(int i = 0; i < reg_count; i++) { | |
| 107 | |
| 108 VMReg r = VMRegImpl::as_VMReg(i); | |
| 109 intptr_t* src = (intptr_t*) location(r); | |
| 110 if (src != NULL) { | |
| 111 | |
| 417 | 112 r->print_on(st); |
| 113 st->print(" [" INTPTR_FORMAT "] = ", src); | |
| 0 | 114 if (((uintptr_t)src & (sizeof(*src)-1)) != 0) { |
| 417 | 115 st->print_cr("<misaligned>"); |
| 0 | 116 } else { |
| 417 | 117 st->print_cr(INTPTR_FORMAT, *src); |
| 0 | 118 } |
| 119 } | |
| 120 } | |
| 121 } | |
| 122 | |
| 123 void RegisterMap::print() const { | |
| 124 print_on(tty); | |
| 125 } | |
| 126 | |
| 127 #endif | |
| 128 // This returns the pc that if you were in the debugger you'd see. Not | |
| 129 // the idealized value in the frame object. This undoes the magic conversion | |
| 130 // that happens for deoptimized frames. In addition it makes the value the | |
| 131 // hardware would want to see in the native frame. The only user (at this point) | |
| 132 // is deoptimization. It likely no one else should ever use it. | |
| 133 | |
| 134 address frame::raw_pc() const { | |
| 135 if (is_deoptimized_frame()) { | |
| 1204 | 136 nmethod* nm = cb()->as_nmethod_or_null(); |
| 137 if (nm->is_method_handle_return(pc())) | |
| 138 return nm->deopt_mh_handler_begin() - pc_return_offset; | |
| 139 else | |
| 140 return nm->deopt_handler_begin() - pc_return_offset; | |
| 0 | 141 } else { |
| 142 return (pc() - pc_return_offset); | |
| 143 } | |
| 144 } | |
| 145 | |
| 146 // Change the pc in a frame object. This does not change the actual pc in | |
| 147 // actual frame. To do that use patch_pc. | |
| 148 // | |
| 149 void frame::set_pc(address newpc ) { | |
| 150 #ifdef ASSERT | |
| 151 if (_cb != NULL && _cb->is_nmethod()) { | |
| 152 assert(!((nmethod*)_cb)->is_deopt_pc(_pc), "invariant violation"); | |
| 153 } | |
| 154 #endif // ASSERT | |
| 155 | |
| 156 // Unsafe to use the is_deoptimzed tester after changing pc | |
| 157 _deopt_state = unknown; | |
| 158 _pc = newpc; | |
| 159 _cb = CodeCache::find_blob_unsafe(_pc); | |
| 160 | |
| 161 } | |
| 162 | |
| 163 // type testers | |
| 164 bool frame::is_deoptimized_frame() const { | |
| 165 assert(_deopt_state != unknown, "not answerable"); | |
| 166 return _deopt_state == is_deoptimized; | |
| 167 } | |
| 168 | |
| 169 bool frame::is_native_frame() const { | |
| 170 return (_cb != NULL && | |
| 171 _cb->is_nmethod() && | |
| 172 ((nmethod*)_cb)->is_native_method()); | |
| 173 } | |
| 174 | |
| 175 bool frame::is_java_frame() const { | |
| 176 if (is_interpreted_frame()) return true; | |
| 177 if (is_compiled_frame()) return true; | |
| 178 return false; | |
| 179 } | |
| 180 | |
| 181 | |
| 182 bool frame::is_compiled_frame() const { | |
| 183 if (_cb != NULL && | |
| 184 _cb->is_nmethod() && | |
| 185 ((nmethod*)_cb)->is_java_method()) { | |
| 186 return true; | |
| 187 } | |
| 188 return false; | |
| 189 } | |
| 190 | |
| 191 | |
| 192 bool frame::is_runtime_frame() const { | |
| 193 return (_cb != NULL && _cb->is_runtime_stub()); | |
| 194 } | |
| 195 | |
| 196 bool frame::is_safepoint_blob_frame() const { | |
| 197 return (_cb != NULL && _cb->is_safepoint_stub()); | |
| 198 } | |
| 199 | |
| 200 // testers | |
| 201 | |
| 202 bool frame::is_first_java_frame() const { | |
| 203 RegisterMap map(JavaThread::current(), false); // No update | |
| 204 frame s; | |
| 205 for (s = sender(&map); !(s.is_java_frame() || s.is_first_frame()); s = s.sender(&map)); | |
| 206 return s.is_first_frame(); | |
| 207 } | |
| 208 | |
| 209 | |
| 210 bool frame::entry_frame_is_first() const { | |
| 211 return entry_frame_call_wrapper()->anchor()->last_Java_sp() == NULL; | |
| 212 } | |
| 213 | |
| 214 | |
| 215 bool frame::should_be_deoptimized() const { | |
| 216 if (_deopt_state == is_deoptimized || | |
| 217 !is_compiled_frame() ) return false; | |
| 218 assert(_cb != NULL && _cb->is_nmethod(), "must be an nmethod"); | |
| 219 nmethod* nm = (nmethod *)_cb; | |
| 220 if (TraceDependencies) { | |
| 221 tty->print("checking (%s) ", nm->is_marked_for_deoptimization() ? "true" : "false"); | |
| 222 nm->print_value_on(tty); | |
| 223 tty->cr(); | |
| 224 } | |
| 225 | |
| 226 if( !nm->is_marked_for_deoptimization() ) | |
| 227 return false; | |
| 228 | |
| 229 // If at the return point, then the frame has already been popped, and | |
| 230 // only the return needs to be executed. Don't deoptimize here. | |
| 231 return !nm->is_at_poll_return(pc()); | |
| 232 } | |
| 233 | |
| 234 bool frame::can_be_deoptimized() const { | |
| 235 if (!is_compiled_frame()) return false; | |
| 236 nmethod* nm = (nmethod*)_cb; | |
| 237 | |
| 238 if( !nm->can_be_deoptimized() ) | |
| 239 return false; | |
| 240 | |
| 241 return !nm->is_at_poll_return(pc()); | |
| 242 } | |
| 243 | |
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244 void frame::deoptimize(JavaThread* thread) { |
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245 // Schedule deoptimization of an nmethod activation with this frame. |
| 0 | 246 assert(_cb != NULL && _cb->is_nmethod(), "must be"); |
| 247 nmethod* nm = (nmethod*)_cb; | |
| 248 | |
| 249 // This is a fix for register window patching race | |
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250 if (NeedsDeoptSuspend && Thread::current() != thread) { |
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251 assert(SafepointSynchronize::is_at_safepoint(), |
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252 "patching other threads for deopt may only occur at a safepoint"); |
| 0 | 253 |
| 254 // It is possible especially with DeoptimizeALot/DeoptimizeRandom that | |
| 255 // we could see the frame again and ask for it to be deoptimized since | |
| 256 // it might move for a long time. That is harmless and we just ignore it. | |
| 257 if (id() == thread->must_deopt_id()) { | |
| 258 assert(thread->is_deopt_suspend(), "lost suspension"); | |
| 259 return; | |
| 260 } | |
| 261 | |
| 262 // We are at a safepoint so the target thread can only be | |
| 263 // in 4 states: | |
| 264 // blocked - no problem | |
| 265 // blocked_trans - no problem (i.e. could have woken up from blocked | |
| 266 // during a safepoint). | |
| 267 // native - register window pc patching race | |
| 268 // native_trans - momentary state | |
| 269 // | |
| 270 // We could just wait out a thread in native_trans to block. | |
| 271 // Then we'd have all the issues that the safepoint code has as to | |
| 272 // whether to spin or block. It isn't worth it. Just treat it like | |
| 273 // native and be done with it. | |
| 274 // | |
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275 // Examine the state of the thread at the start of safepoint since |
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276 // threads that were in native at the start of the safepoint could |
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277 // come to a halt during the safepoint, changing the current value |
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278 // of the safepoint_state. |
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279 JavaThreadState state = thread->safepoint_state()->orig_thread_state(); |
| 0 | 280 if (state == _thread_in_native || state == _thread_in_native_trans) { |
| 281 // Since we are at a safepoint the target thread will stop itself | |
| 282 // before it can return to java as long as we remain at the safepoint. | |
| 283 // Therefore we can put an additional request for the thread to stop | |
| 284 // no matter what no (like a suspend). This will cause the thread | |
| 285 // to notice it needs to do the deopt on its own once it leaves native. | |
| 286 // | |
| 287 // The only reason we must do this is because on machine with register | |
| 288 // windows we have a race with patching the return address and the | |
| 289 // window coming live as the thread returns to the Java code (but still | |
| 290 // in native mode) and then blocks. It is only this top most frame | |
| 291 // that is at risk. So in truth we could add an additional check to | |
| 292 // see if this frame is one that is at risk. | |
| 293 RegisterMap map(thread, false); | |
| 294 frame at_risk = thread->last_frame().sender(&map); | |
| 295 if (id() == at_risk.id()) { | |
| 296 thread->set_must_deopt_id(id()); | |
| 297 thread->set_deopt_suspend(); | |
| 298 return; | |
| 299 } | |
| 300 } | |
| 301 } // NeedsDeoptSuspend | |
| 302 | |
| 303 | |
| 1204 | 304 // If the call site is a MethodHandle call site use the MH deopt |
| 305 // handler. | |
| 306 address deopt = nm->is_method_handle_return(pc()) ? | |
| 307 nm->deopt_mh_handler_begin() : | |
| 308 nm->deopt_handler_begin(); | |
| 309 | |
| 0 | 310 // Save the original pc before we patch in the new one |
| 311 nm->set_original_pc(this, pc()); | |
| 312 patch_pc(thread, deopt); | |
| 1204 | 313 |
| 0 | 314 #ifdef ASSERT |
| 315 { | |
| 316 RegisterMap map(thread, false); | |
| 317 frame check = thread->last_frame(); | |
| 318 while (id() != check.id()) { | |
| 319 check = check.sender(&map); | |
| 320 } | |
| 321 assert(check.is_deoptimized_frame(), "missed deopt"); | |
| 322 } | |
| 323 #endif // ASSERT | |
| 324 } | |
| 325 | |
| 326 frame frame::java_sender() const { | |
| 327 RegisterMap map(JavaThread::current(), false); | |
| 328 frame s; | |
| 329 for (s = sender(&map); !(s.is_java_frame() || s.is_first_frame()); s = s.sender(&map)) ; | |
| 330 guarantee(s.is_java_frame(), "tried to get caller of first java frame"); | |
| 331 return s; | |
| 332 } | |
| 333 | |
| 334 frame frame::real_sender(RegisterMap* map) const { | |
| 335 frame result = sender(map); | |
| 336 while (result.is_runtime_frame()) { | |
| 337 result = result.sender(map); | |
| 338 } | |
| 339 return result; | |
| 340 } | |
| 341 | |
| 342 // Note: called by profiler - NOT for current thread | |
| 343 frame frame::profile_find_Java_sender_frame(JavaThread *thread) { | |
| 344 // If we don't recognize this frame, walk back up the stack until we do | |
| 345 RegisterMap map(thread, false); | |
| 346 frame first_java_frame = frame(); | |
| 347 | |
| 348 // Find the first Java frame on the stack starting with input frame | |
| 349 if (is_java_frame()) { | |
| 350 // top frame is compiled frame or deoptimized frame | |
| 351 first_java_frame = *this; | |
| 352 } else if (safe_for_sender(thread)) { | |
| 353 for (frame sender_frame = sender(&map); | |
| 354 sender_frame.safe_for_sender(thread) && !sender_frame.is_first_frame(); | |
| 355 sender_frame = sender_frame.sender(&map)) { | |
| 356 if (sender_frame.is_java_frame()) { | |
| 357 first_java_frame = sender_frame; | |
| 358 break; | |
| 359 } | |
| 360 } | |
| 361 } | |
| 362 return first_java_frame; | |
| 363 } | |
| 364 | |
| 365 // Interpreter frames | |
| 366 | |
| 367 | |
| 368 void frame::interpreter_frame_set_locals(intptr_t* locs) { | |
| 369 assert(is_interpreted_frame(), "Not an interpreted frame"); | |
| 370 *interpreter_frame_locals_addr() = locs; | |
| 371 } | |
| 372 | |
| 373 methodOop frame::interpreter_frame_method() const { | |
| 374 assert(is_interpreted_frame(), "interpreted frame expected"); | |
| 375 methodOop m = *interpreter_frame_method_addr(); | |
| 376 assert(m->is_perm(), "bad methodOop in interpreter frame"); | |
| 377 assert(m->is_method(), "not a methodOop"); | |
| 378 return m; | |
| 379 } | |
| 380 | |
| 381 void frame::interpreter_frame_set_method(methodOop method) { | |
| 382 assert(is_interpreted_frame(), "interpreted frame expected"); | |
| 383 *interpreter_frame_method_addr() = method; | |
| 384 } | |
| 385 | |
| 386 void frame::interpreter_frame_set_bcx(intptr_t bcx) { | |
| 387 assert(is_interpreted_frame(), "Not an interpreted frame"); | |
| 388 if (ProfileInterpreter) { | |
| 389 bool formerly_bci = is_bci(interpreter_frame_bcx()); | |
| 390 bool is_now_bci = is_bci(bcx); | |
| 391 *interpreter_frame_bcx_addr() = bcx; | |
| 392 | |
| 393 intptr_t mdx = interpreter_frame_mdx(); | |
| 394 | |
| 395 if (mdx != 0) { | |
| 396 if (formerly_bci) { | |
| 397 if (!is_now_bci) { | |
| 398 // The bcx was just converted from bci to bcp. | |
| 399 // Convert the mdx in parallel. | |
| 400 methodDataOop mdo = interpreter_frame_method()->method_data(); | |
| 401 assert(mdo != NULL, ""); | |
| 402 int mdi = mdx - 1; // We distinguish valid mdi from zero by adding one. | |
| 403 address mdp = mdo->di_to_dp(mdi); | |
| 404 interpreter_frame_set_mdx((intptr_t)mdp); | |
| 405 } | |
| 406 } else { | |
| 407 if (is_now_bci) { | |
| 408 // The bcx was just converted from bcp to bci. | |
| 409 // Convert the mdx in parallel. | |
| 410 methodDataOop mdo = interpreter_frame_method()->method_data(); | |
| 411 assert(mdo != NULL, ""); | |
| 412 int mdi = mdo->dp_to_di((address)mdx); | |
| 413 interpreter_frame_set_mdx((intptr_t)mdi + 1); // distinguish valid from 0. | |
| 414 } | |
| 415 } | |
| 416 } | |
| 417 } else { | |
| 418 *interpreter_frame_bcx_addr() = bcx; | |
| 419 } | |
| 420 } | |
| 421 | |
| 422 jint frame::interpreter_frame_bci() const { | |
| 423 assert(is_interpreted_frame(), "interpreted frame expected"); | |
| 424 intptr_t bcx = interpreter_frame_bcx(); | |
| 425 return is_bci(bcx) ? bcx : interpreter_frame_method()->bci_from((address)bcx); | |
| 426 } | |
| 427 | |
| 428 void frame::interpreter_frame_set_bci(jint bci) { | |
| 429 assert(is_interpreted_frame(), "interpreted frame expected"); | |
| 430 assert(!is_bci(interpreter_frame_bcx()), "should not set bci during GC"); | |
| 431 interpreter_frame_set_bcx((intptr_t)interpreter_frame_method()->bcp_from(bci)); | |
| 432 } | |
| 433 | |
| 434 address frame::interpreter_frame_bcp() const { | |
| 435 assert(is_interpreted_frame(), "interpreted frame expected"); | |
| 436 intptr_t bcx = interpreter_frame_bcx(); | |
| 437 return is_bci(bcx) ? interpreter_frame_method()->bcp_from(bcx) : (address)bcx; | |
| 438 } | |
| 439 | |
| 440 void frame::interpreter_frame_set_bcp(address bcp) { | |
| 441 assert(is_interpreted_frame(), "interpreted frame expected"); | |
| 442 assert(!is_bci(interpreter_frame_bcx()), "should not set bcp during GC"); | |
| 443 interpreter_frame_set_bcx((intptr_t)bcp); | |
| 444 } | |
| 445 | |
| 446 void frame::interpreter_frame_set_mdx(intptr_t mdx) { | |
| 447 assert(is_interpreted_frame(), "Not an interpreted frame"); | |
| 448 assert(ProfileInterpreter, "must be profiling interpreter"); | |
| 449 *interpreter_frame_mdx_addr() = mdx; | |
| 450 } | |
| 451 | |
| 452 address frame::interpreter_frame_mdp() const { | |
| 453 assert(ProfileInterpreter, "must be profiling interpreter"); | |
| 454 assert(is_interpreted_frame(), "interpreted frame expected"); | |
| 455 intptr_t bcx = interpreter_frame_bcx(); | |
| 456 intptr_t mdx = interpreter_frame_mdx(); | |
| 457 | |
| 458 assert(!is_bci(bcx), "should not access mdp during GC"); | |
| 459 return (address)mdx; | |
| 460 } | |
| 461 | |
| 462 void frame::interpreter_frame_set_mdp(address mdp) { | |
| 463 assert(is_interpreted_frame(), "interpreted frame expected"); | |
| 464 if (mdp == NULL) { | |
| 465 // Always allow the mdp to be cleared. | |
| 466 interpreter_frame_set_mdx((intptr_t)mdp); | |
| 467 } | |
| 468 intptr_t bcx = interpreter_frame_bcx(); | |
| 469 assert(!is_bci(bcx), "should not set mdp during GC"); | |
| 470 interpreter_frame_set_mdx((intptr_t)mdp); | |
| 471 } | |
| 472 | |
| 473 BasicObjectLock* frame::next_monitor_in_interpreter_frame(BasicObjectLock* current) const { | |
| 474 assert(is_interpreted_frame(), "Not an interpreted frame"); | |
| 475 #ifdef ASSERT | |
| 476 interpreter_frame_verify_monitor(current); | |
| 477 #endif | |
| 478 BasicObjectLock* next = (BasicObjectLock*) (((intptr_t*) current) + interpreter_frame_monitor_size()); | |
| 479 return next; | |
| 480 } | |
| 481 | |
| 482 BasicObjectLock* frame::previous_monitor_in_interpreter_frame(BasicObjectLock* current) const { | |
| 483 assert(is_interpreted_frame(), "Not an interpreted frame"); | |
| 484 #ifdef ASSERT | |
| 485 // // This verification needs to be checked before being enabled | |
| 486 // interpreter_frame_verify_monitor(current); | |
| 487 #endif | |
| 488 BasicObjectLock* previous = (BasicObjectLock*) (((intptr_t*) current) - interpreter_frame_monitor_size()); | |
| 489 return previous; | |
| 490 } | |
| 491 | |
| 492 // Interpreter locals and expression stack locations. | |
| 493 | |
| 494 intptr_t* frame::interpreter_frame_local_at(int index) const { | |
| 495 const int n = Interpreter::local_offset_in_bytes(index)/wordSize; | |
| 496 return &((*interpreter_frame_locals_addr())[n]); | |
| 497 } | |
| 498 | |
| 499 intptr_t* frame::interpreter_frame_expression_stack_at(jint offset) const { | |
| 500 const int i = offset * interpreter_frame_expression_stack_direction(); | |
| 1506 | 501 const int n = i * Interpreter::stackElementWords; |
| 0 | 502 return &(interpreter_frame_expression_stack()[n]); |
| 503 } | |
| 504 | |
| 505 jint frame::interpreter_frame_expression_stack_size() const { | |
| 506 // Number of elements on the interpreter expression stack | |
| 507 // Callers should span by stackElementWords | |
| 1506 | 508 int element_size = Interpreter::stackElementWords; |
| 0 | 509 if (frame::interpreter_frame_expression_stack_direction() < 0) { |
| 510 return (interpreter_frame_expression_stack() - | |
| 511 interpreter_frame_tos_address() + 1)/element_size; | |
| 512 } else { | |
| 513 return (interpreter_frame_tos_address() - | |
| 514 interpreter_frame_expression_stack() + 1)/element_size; | |
| 515 } | |
| 516 } | |
| 517 | |
| 518 | |
| 519 // (frame::interpreter_frame_sender_sp accessor is in frame_<arch>.cpp) | |
| 520 | |
| 521 const char* frame::print_name() const { | |
| 522 if (is_native_frame()) return "Native"; | |
| 523 if (is_interpreted_frame()) return "Interpreted"; | |
| 524 if (is_compiled_frame()) { | |
| 525 if (is_deoptimized_frame()) return "Deoptimized"; | |
| 526 return "Compiled"; | |
| 527 } | |
| 528 if (sp() == NULL) return "Empty"; | |
| 529 return "C"; | |
| 530 } | |
| 531 | |
| 532 void frame::print_value_on(outputStream* st, JavaThread *thread) const { | |
| 533 NOT_PRODUCT(address begin = pc()-40;) | |
| 534 NOT_PRODUCT(address end = NULL;) | |
| 535 | |
| 536 st->print("%s frame (sp=" INTPTR_FORMAT " unextended sp=" INTPTR_FORMAT, print_name(), sp(), unextended_sp()); | |
| 537 if (sp() != NULL) | |
| 538 st->print(", fp=" INTPTR_FORMAT ", pc=" INTPTR_FORMAT, fp(), pc()); | |
| 539 | |
| 540 if (StubRoutines::contains(pc())) { | |
| 541 st->print_cr(")"); | |
| 542 st->print("("); | |
| 543 StubCodeDesc* desc = StubCodeDesc::desc_for(pc()); | |
| 544 st->print("~Stub::%s", desc->name()); | |
| 545 NOT_PRODUCT(begin = desc->begin(); end = desc->end();) | |
| 546 } else if (Interpreter::contains(pc())) { | |
| 547 st->print_cr(")"); | |
| 548 st->print("("); | |
| 549 InterpreterCodelet* desc = Interpreter::codelet_containing(pc()); | |
| 550 if (desc != NULL) { | |
| 551 st->print("~"); | |
| 552 desc->print(); | |
| 553 NOT_PRODUCT(begin = desc->code_begin(); end = desc->code_end();) | |
| 554 } else { | |
| 555 st->print("~interpreter"); | |
| 556 } | |
| 557 } | |
| 558 st->print_cr(")"); | |
| 559 | |
| 560 if (_cb != NULL) { | |
| 561 st->print(" "); | |
| 562 _cb->print_value_on(st); | |
| 563 st->cr(); | |
| 564 #ifndef PRODUCT | |
| 565 if (end == NULL) { | |
| 1748 | 566 begin = _cb->code_begin(); |
| 567 end = _cb->code_end(); | |
| 0 | 568 } |
| 569 #endif | |
| 570 } | |
| 571 NOT_PRODUCT(if (WizardMode && Verbose) Disassembler::decode(begin, end);) | |
| 572 } | |
| 573 | |
| 574 | |
| 575 void frame::print_on(outputStream* st) const { | |
| 576 print_value_on(st,NULL); | |
| 577 if (is_interpreted_frame()) { | |
| 578 interpreter_frame_print_on(st); | |
| 579 } | |
| 580 } | |
| 581 | |
| 582 | |
| 583 void frame::interpreter_frame_print_on(outputStream* st) const { | |
| 584 #ifndef PRODUCT | |
| 585 assert(is_interpreted_frame(), "Not an interpreted frame"); | |
| 586 jint i; | |
| 587 for (i = 0; i < interpreter_frame_method()->max_locals(); i++ ) { | |
| 588 intptr_t x = *interpreter_frame_local_at(i); | |
| 589 st->print(" - local [" INTPTR_FORMAT "]", x); | |
| 590 st->fill_to(23); | |
| 591 st->print_cr("; #%d", i); | |
| 592 } | |
| 593 for (i = interpreter_frame_expression_stack_size() - 1; i >= 0; --i ) { | |
| 594 intptr_t x = *interpreter_frame_expression_stack_at(i); | |
| 595 st->print(" - stack [" INTPTR_FORMAT "]", x); | |
| 596 st->fill_to(23); | |
| 597 st->print_cr("; #%d", i); | |
| 598 } | |
| 599 // locks for synchronization | |
| 600 for (BasicObjectLock* current = interpreter_frame_monitor_end(); | |
| 601 current < interpreter_frame_monitor_begin(); | |
| 602 current = next_monitor_in_interpreter_frame(current)) { | |
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603 st->print(" - obj ["); |
| 0 | 604 current->obj()->print_value_on(st); |
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605 st->print_cr("]"); |
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606 st->print(" - lock ["); |
| 0 | 607 current->lock()->print_on(st); |
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608 st->print_cr("]"); |
| 0 | 609 } |
| 610 // monitor | |
| 611 st->print_cr(" - monitor[" INTPTR_FORMAT "]", interpreter_frame_monitor_begin()); | |
| 612 // bcp | |
| 613 st->print(" - bcp [" INTPTR_FORMAT "]", interpreter_frame_bcp()); | |
| 614 st->fill_to(23); | |
| 615 st->print_cr("; @%d", interpreter_frame_bci()); | |
| 616 // locals | |
| 617 st->print_cr(" - locals [" INTPTR_FORMAT "]", interpreter_frame_local_at(0)); | |
| 618 // method | |
| 619 st->print(" - method [" INTPTR_FORMAT "]", (address)interpreter_frame_method()); | |
| 620 st->fill_to(23); | |
| 621 st->print("; "); | |
| 622 interpreter_frame_method()->print_name(st); | |
| 623 st->cr(); | |
| 624 #endif | |
| 625 } | |
| 626 | |
| 627 // Return whether the frame is in the VM or os indicating a Hotspot problem. | |
| 628 // Otherwise, it's likely a bug in the native library that the Java code calls, | |
| 629 // hopefully indicating where to submit bugs. | |
| 630 static void print_C_frame(outputStream* st, char* buf, int buflen, address pc) { | |
| 631 // C/C++ frame | |
| 632 bool in_vm = os::address_is_in_vm(pc); | |
| 633 st->print(in_vm ? "V" : "C"); | |
| 634 | |
| 635 int offset; | |
| 636 bool found; | |
| 637 | |
| 638 // libname | |
| 639 found = os::dll_address_to_library_name(pc, buf, buflen, &offset); | |
| 640 if (found) { | |
| 641 // skip directory names | |
| 642 const char *p1, *p2; | |
| 643 p1 = buf; | |
| 644 int len = (int)strlen(os::file_separator()); | |
| 645 while ((p2 = strstr(p1, os::file_separator())) != NULL) p1 = p2 + len; | |
| 646 st->print(" [%s+0x%x]", p1, offset); | |
| 647 } else { | |
| 648 st->print(" " PTR_FORMAT, pc); | |
| 649 } | |
| 650 | |
| 651 // function name - os::dll_address_to_function_name() may return confusing | |
| 652 // names if pc is within jvm.dll or libjvm.so, because JVM only has | |
| 653 // JVM_xxxx and a few other symbols in the dynamic symbol table. Do this | |
| 654 // only for native libraries. | |
| 655 if (!in_vm) { | |
| 656 found = os::dll_address_to_function_name(pc, buf, buflen, &offset); | |
| 657 | |
| 658 if (found) { | |
| 659 st->print(" %s+0x%x", buf, offset); | |
| 660 } | |
| 661 } | |
| 662 } | |
| 663 | |
| 664 // frame::print_on_error() is called by fatal error handler. Notice that we may | |
| 665 // crash inside this function if stack frame is corrupted. The fatal error | |
| 666 // handler can catch and handle the crash. Here we assume the frame is valid. | |
| 667 // | |
| 668 // First letter indicates type of the frame: | |
| 669 // J: Java frame (compiled) | |
| 670 // j: Java frame (interpreted) | |
| 671 // V: VM frame (C/C++) | |
| 672 // v: Other frames running VM generated code (e.g. stubs, adapters, etc.) | |
| 673 // C: C/C++ frame | |
| 674 // | |
| 675 // We don't need detailed frame type as that in frame::print_name(). "C" | |
| 676 // suggests the problem is in user lib; everything else is likely a VM bug. | |
| 677 | |
| 678 void frame::print_on_error(outputStream* st, char* buf, int buflen, bool verbose) const { | |
| 679 if (_cb != NULL) { | |
| 680 if (Interpreter::contains(pc())) { | |
| 681 methodOop m = this->interpreter_frame_method(); | |
| 682 if (m != NULL) { | |
| 683 m->name_and_sig_as_C_string(buf, buflen); | |
| 684 st->print("j %s", buf); | |
| 685 st->print("+%d", this->interpreter_frame_bci()); | |
| 686 } else { | |
| 687 st->print("j " PTR_FORMAT, pc()); | |
| 688 } | |
| 689 } else if (StubRoutines::contains(pc())) { | |
| 690 StubCodeDesc* desc = StubCodeDesc::desc_for(pc()); | |
| 691 if (desc != NULL) { | |
| 692 st->print("v ~StubRoutines::%s", desc->name()); | |
| 693 } else { | |
| 694 st->print("v ~StubRoutines::" PTR_FORMAT, pc()); | |
| 695 } | |
| 696 } else if (_cb->is_buffer_blob()) { | |
| 697 st->print("v ~BufferBlob::%s", ((BufferBlob *)_cb)->name()); | |
| 698 } else if (_cb->is_nmethod()) { | |
| 699 methodOop m = ((nmethod *)_cb)->method(); | |
| 700 if (m != NULL) { | |
| 701 m->name_and_sig_as_C_string(buf, buflen); | |
| 702 st->print("J %s", buf); | |
| 703 } else { | |
| 704 st->print("J " PTR_FORMAT, pc()); | |
| 705 } | |
| 706 } else if (_cb->is_runtime_stub()) { | |
| 707 st->print("v ~RuntimeStub::%s", ((RuntimeStub *)_cb)->name()); | |
| 708 } else if (_cb->is_deoptimization_stub()) { | |
| 709 st->print("v ~DeoptimizationBlob"); | |
| 710 } else if (_cb->is_exception_stub()) { | |
| 711 st->print("v ~ExceptionBlob"); | |
| 712 } else if (_cb->is_safepoint_stub()) { | |
| 713 st->print("v ~SafepointBlob"); | |
| 714 } else { | |
| 715 st->print("v blob " PTR_FORMAT, pc()); | |
| 716 } | |
| 717 } else { | |
| 718 print_C_frame(st, buf, buflen, pc()); | |
| 719 } | |
| 720 } | |
| 721 | |
| 722 | |
| 723 /* | |
| 724 The interpreter_frame_expression_stack_at method in the case of SPARC needs the | |
| 725 max_stack value of the method in order to compute the expression stack address. | |
| 726 It uses the methodOop in order to get the max_stack value but during GC this | |
| 727 methodOop value saved on the frame is changed by reverse_and_push and hence cannot | |
| 728 be used. So we save the max_stack value in the FrameClosure object and pass it | |
| 729 down to the interpreter_frame_expression_stack_at method | |
| 730 */ | |
| 731 class InterpreterFrameClosure : public OffsetClosure { | |
| 732 private: | |
| 733 frame* _fr; | |
| 734 OopClosure* _f; | |
| 735 int _max_locals; | |
| 736 int _max_stack; | |
| 737 | |
| 738 public: | |
| 739 InterpreterFrameClosure(frame* fr, int max_locals, int max_stack, | |
| 740 OopClosure* f) { | |
| 741 _fr = fr; | |
| 742 _max_locals = max_locals; | |
| 743 _max_stack = max_stack; | |
| 744 _f = f; | |
| 745 } | |
| 746 | |
| 747 void offset_do(int offset) { | |
| 748 oop* addr; | |
| 749 if (offset < _max_locals) { | |
| 750 addr = (oop*) _fr->interpreter_frame_local_at(offset); | |
| 751 assert((intptr_t*)addr >= _fr->sp(), "must be inside the frame"); | |
| 752 _f->do_oop(addr); | |
| 753 } else { | |
| 754 addr = (oop*) _fr->interpreter_frame_expression_stack_at((offset - _max_locals)); | |
| 755 // In case of exceptions, the expression stack is invalid and the esp will be reset to express | |
| 756 // this condition. Therefore, we call f only if addr is 'inside' the stack (i.e., addr >= esp for Intel). | |
| 757 bool in_stack; | |
| 758 if (frame::interpreter_frame_expression_stack_direction() > 0) { | |
| 759 in_stack = (intptr_t*)addr <= _fr->interpreter_frame_tos_address(); | |
| 760 } else { | |
| 761 in_stack = (intptr_t*)addr >= _fr->interpreter_frame_tos_address(); | |
| 762 } | |
| 763 if (in_stack) { | |
| 764 _f->do_oop(addr); | |
| 765 } | |
| 766 } | |
| 767 } | |
| 768 | |
| 769 int max_locals() { return _max_locals; } | |
| 770 frame* fr() { return _fr; } | |
| 771 }; | |
| 772 | |
| 773 | |
| 774 class InterpretedArgumentOopFinder: public SignatureInfo { | |
| 775 private: | |
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776 OopClosure* _f; // Closure to invoke |
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777 int _offset; // TOS-relative offset, decremented with each argument |
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778 bool _has_receiver; // true if the callee has a receiver |
| 0 | 779 frame* _fr; |
| 780 | |
| 781 void set(int size, BasicType type) { | |
| 782 _offset -= size; | |
| 783 if (type == T_OBJECT || type == T_ARRAY) oop_offset_do(); | |
| 784 } | |
| 785 | |
| 786 void oop_offset_do() { | |
| 787 oop* addr; | |
| 788 addr = (oop*)_fr->interpreter_frame_tos_at(_offset); | |
| 789 _f->do_oop(addr); | |
| 790 } | |
| 791 | |
| 792 public: | |
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793 InterpretedArgumentOopFinder(symbolHandle signature, bool has_receiver, frame* fr, OopClosure* f) : SignatureInfo(signature), _has_receiver(has_receiver) { |
| 0 | 794 // compute size of arguments |
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795 int args_size = ArgumentSizeComputer(signature).size() + (has_receiver ? 1 : 0); |
| 0 | 796 assert(!fr->is_interpreted_frame() || |
| 797 args_size <= fr->interpreter_frame_expression_stack_size(), | |
| 798 "args cannot be on stack anymore"); | |
| 799 // initialize InterpretedArgumentOopFinder | |
| 800 _f = f; | |
| 801 _fr = fr; | |
| 802 _offset = args_size; | |
| 803 } | |
| 804 | |
| 805 void oops_do() { | |
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806 if (_has_receiver) { |
| 0 | 807 --_offset; |
| 808 oop_offset_do(); | |
| 809 } | |
| 810 iterate_parameters(); | |
| 811 } | |
| 812 }; | |
| 813 | |
| 814 | |
| 815 // Entry frame has following form (n arguments) | |
| 816 // +-----------+ | |
| 817 // sp -> | last arg | | |
| 818 // +-----------+ | |
| 819 // : ::: : | |
| 820 // +-----------+ | |
| 821 // (sp+n)->| first arg| | |
| 822 // +-----------+ | |
| 823 | |
| 824 | |
| 825 | |
| 826 // visits and GC's all the arguments in entry frame | |
| 827 class EntryFrameOopFinder: public SignatureInfo { | |
| 828 private: | |
| 829 bool _is_static; | |
| 830 int _offset; | |
| 831 frame* _fr; | |
| 832 OopClosure* _f; | |
| 833 | |
| 834 void set(int size, BasicType type) { | |
| 835 assert (_offset >= 0, "illegal offset"); | |
| 836 if (type == T_OBJECT || type == T_ARRAY) oop_at_offset_do(_offset); | |
| 837 _offset -= size; | |
| 838 } | |
| 839 | |
| 840 void oop_at_offset_do(int offset) { | |
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841 assert (offset >= 0, "illegal offset"); |
| 0 | 842 oop* addr = (oop*) _fr->entry_frame_argument_at(offset); |
| 843 _f->do_oop(addr); | |
| 844 } | |
| 845 | |
| 846 public: | |
| 847 EntryFrameOopFinder(frame* frame, symbolHandle signature, bool is_static) : SignatureInfo(signature) { | |
| 848 _f = NULL; // will be set later | |
| 849 _fr = frame; | |
| 850 _is_static = is_static; | |
| 851 _offset = ArgumentSizeComputer(signature).size() - 1; // last parameter is at index 0 | |
| 852 } | |
| 853 | |
| 854 void arguments_do(OopClosure* f) { | |
| 855 _f = f; | |
| 856 if (!_is_static) oop_at_offset_do(_offset+1); // do the receiver | |
| 857 iterate_parameters(); | |
| 858 } | |
| 859 | |
| 860 }; | |
| 861 | |
| 862 oop* frame::interpreter_callee_receiver_addr(symbolHandle signature) { | |
| 863 ArgumentSizeComputer asc(signature); | |
| 864 int size = asc.size(); | |
| 865 return (oop *)interpreter_frame_tos_at(size); | |
| 866 } | |
| 867 | |
| 868 | |
| 869 void frame::oops_interpreted_do(OopClosure* f, const RegisterMap* map, bool query_oop_map_cache) { | |
| 870 assert(is_interpreted_frame(), "Not an interpreted frame"); | |
| 871 assert(map != NULL, "map must be set"); | |
| 872 Thread *thread = Thread::current(); | |
| 873 methodHandle m (thread, interpreter_frame_method()); | |
| 874 jint bci = interpreter_frame_bci(); | |
| 875 | |
| 876 assert(Universe::heap()->is_in(m()), "must be valid oop"); | |
| 877 assert(m->is_method(), "checking frame value"); | |
| 878 assert((m->is_native() && bci == 0) || (!m->is_native() && bci >= 0 && bci < m->code_size()), "invalid bci value"); | |
| 879 | |
| 880 // Handle the monitor elements in the activation | |
| 881 for ( | |
| 882 BasicObjectLock* current = interpreter_frame_monitor_end(); | |
| 883 current < interpreter_frame_monitor_begin(); | |
| 884 current = next_monitor_in_interpreter_frame(current) | |
| 885 ) { | |
| 886 #ifdef ASSERT | |
| 887 interpreter_frame_verify_monitor(current); | |
| 888 #endif | |
| 889 current->oops_do(f); | |
| 890 } | |
| 891 | |
| 892 // process fixed part | |
| 893 f->do_oop((oop*)interpreter_frame_method_addr()); | |
| 894 f->do_oop((oop*)interpreter_frame_cache_addr()); | |
| 895 | |
| 896 // Hmm what about the mdp? | |
| 897 #ifdef CC_INTERP | |
| 898 // Interpreter frame in the midst of a call have a methodOop within the | |
| 899 // object. | |
| 900 interpreterState istate = get_interpreterState(); | |
| 901 if (istate->msg() == BytecodeInterpreter::call_method) { | |
| 902 f->do_oop((oop*)&istate->_result._to_call._callee); | |
| 903 } | |
| 904 | |
| 905 #endif /* CC_INTERP */ | |
| 906 | |
| 1908 | 907 #if !defined(PPC) || defined(ZERO) |
| 0 | 908 if (m->is_native()) { |
| 909 #ifdef CC_INTERP | |
| 910 f->do_oop((oop*)&istate->_oop_temp); | |
| 911 #else | |
| 912 f->do_oop((oop*)( fp() + interpreter_frame_oop_temp_offset )); | |
| 913 #endif /* CC_INTERP */ | |
| 914 } | |
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915 #else // PPC |
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916 if (m->is_native() && m->is_static()) { |
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917 f->do_oop(interpreter_frame_mirror_addr()); |
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918 } |
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919 #endif // PPC |
| 0 | 920 |
| 921 int max_locals = m->is_native() ? m->size_of_parameters() : m->max_locals(); | |
| 922 | |
| 923 symbolHandle signature; | |
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924 bool has_receiver = false; |
| 0 | 925 |
| 926 // Process a callee's arguments if we are at a call site | |
| 927 // (i.e., if we are at an invoke bytecode) | |
| 928 // This is used sometimes for calling into the VM, not for another | |
| 929 // interpreted or compiled frame. | |
| 930 if (!m->is_native()) { | |
| 931 Bytecode_invoke *call = Bytecode_invoke_at_check(m, bci); | |
| 932 if (call != NULL) { | |
| 933 signature = symbolHandle(thread, call->signature()); | |
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934 has_receiver = call->has_receiver(); |
| 0 | 935 if (map->include_argument_oops() && |
| 936 interpreter_frame_expression_stack_size() > 0) { | |
| 937 ResourceMark rm(thread); // is this right ??? | |
| 938 // we are at a call site & the expression stack is not empty | |
| 939 // => process callee's arguments | |
| 940 // | |
| 941 // Note: The expression stack can be empty if an exception | |
| 605 | 942 // occurred during method resolution/execution. In all |
| 0 | 943 // cases we empty the expression stack completely be- |
| 944 // fore handling the exception (the exception handling | |
| 945 // code in the interpreter calls a blocking runtime | |
| 946 // routine which can cause this code to be executed). | |
| 947 // (was bug gri 7/27/98) | |
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948 oops_interpreted_arguments_do(signature, has_receiver, f); |
| 0 | 949 } |
| 950 } | |
| 951 } | |
| 952 | |
| 1506 | 953 InterpreterFrameClosure blk(this, max_locals, m->max_stack(), f); |
| 954 | |
| 955 // process locals & expression stack | |
| 956 InterpreterOopMap mask; | |
| 957 if (query_oop_map_cache) { | |
| 958 m->mask_for(bci, &mask); | |
| 0 | 959 } else { |
| 1506 | 960 OopMapCache::compute_one_oop_map(m, bci, &mask); |
| 0 | 961 } |
| 1506 | 962 mask.iterate_oop(&blk); |
| 0 | 963 } |
| 964 | |
| 965 | |
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966 void frame::oops_interpreted_arguments_do(symbolHandle signature, bool has_receiver, OopClosure* f) { |
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967 InterpretedArgumentOopFinder finder(signature, has_receiver, this, f); |
| 0 | 968 finder.oops_do(); |
| 969 } | |
| 970 | |
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971 void frame::oops_code_blob_do(OopClosure* f, CodeBlobClosure* cf, const RegisterMap* reg_map) { |
| 0 | 972 assert(_cb != NULL, "sanity check"); |
| 973 if (_cb->oop_maps() != NULL) { | |
| 974 OopMapSet::oops_do(this, reg_map, f); | |
| 975 | |
| 976 // Preserve potential arguments for a callee. We handle this by dispatching | |
| 977 // on the codeblob. For c2i, we do | |
| 978 if (reg_map->include_argument_oops()) { | |
| 979 _cb->preserve_callee_argument_oops(*this, reg_map, f); | |
| 980 } | |
| 981 } | |
| 982 // In cases where perm gen is collected, GC will want to mark | |
| 983 // oops referenced from nmethods active on thread stacks so as to | |
| 984 // prevent them from being collected. However, this visit should be | |
| 985 // restricted to certain phases of the collection only. The | |
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986 // closure decides how it wants nmethods to be traced. |
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987 if (cf != NULL) |
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988 cf->do_code_blob(_cb); |
| 0 | 989 } |
| 990 | |
| 991 class CompiledArgumentOopFinder: public SignatureInfo { | |
| 992 protected: | |
| 993 OopClosure* _f; | |
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994 int _offset; // the current offset, incremented with each argument |
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995 bool _has_receiver; // true if the callee has a receiver |
| 0 | 996 frame _fr; |
| 997 RegisterMap* _reg_map; | |
| 998 int _arg_size; | |
| 999 VMRegPair* _regs; // VMReg list of arguments | |
| 1000 | |
| 1001 void set(int size, BasicType type) { | |
| 1002 if (type == T_OBJECT || type == T_ARRAY) handle_oop_offset(); | |
| 1003 _offset += size; | |
| 1004 } | |
| 1005 | |
| 1006 virtual void handle_oop_offset() { | |
| 1007 // Extract low order register number from register array. | |
| 1008 // In LP64-land, the high-order bits are valid but unhelpful. | |
| 1009 VMReg reg = _regs[_offset].first(); | |
| 1010 oop *loc = _fr.oopmapreg_to_location(reg, _reg_map); | |
| 1011 _f->do_oop(loc); | |
| 1012 } | |
| 1013 | |
| 1014 public: | |
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1015 CompiledArgumentOopFinder(symbolHandle signature, bool has_receiver, OopClosure* f, frame fr, const RegisterMap* reg_map) |
| 0 | 1016 : SignatureInfo(signature) { |
| 1017 | |
| 1018 // initialize CompiledArgumentOopFinder | |
| 1019 _f = f; | |
| 1020 _offset = 0; | |
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1021 _has_receiver = has_receiver; |
| 0 | 1022 _fr = fr; |
| 1023 _reg_map = (RegisterMap*)reg_map; | |
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1024 _arg_size = ArgumentSizeComputer(signature).size() + (has_receiver ? 1 : 0); |
| 0 | 1025 |
| 1026 int arg_size; | |
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1027 _regs = SharedRuntime::find_callee_arguments(signature(), has_receiver, &arg_size); |
| 0 | 1028 assert(arg_size == _arg_size, "wrong arg size"); |
| 1029 } | |
| 1030 | |
| 1031 void oops_do() { | |
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1032 if (_has_receiver) { |
| 0 | 1033 handle_oop_offset(); |
| 1034 _offset++; | |
| 1035 } | |
| 1036 iterate_parameters(); | |
| 1037 } | |
| 1038 }; | |
| 1039 | |
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1040 void frame::oops_compiled_arguments_do(symbolHandle signature, bool has_receiver, const RegisterMap* reg_map, OopClosure* f) { |
| 0 | 1041 ResourceMark rm; |
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1042 CompiledArgumentOopFinder finder(signature, has_receiver, f, *this, reg_map); |
| 0 | 1043 finder.oops_do(); |
| 1044 } | |
| 1045 | |
| 1046 | |
| 1047 // Get receiver out of callers frame, i.e. find parameter 0 in callers | |
| 1048 // frame. Consult ADLC for where parameter 0 is to be found. Then | |
| 1049 // check local reg_map for it being a callee-save register or argument | |
| 1050 // register, both of which are saved in the local frame. If not found | |
| 1051 // there, it must be an in-stack argument of the caller. | |
| 1052 // Note: caller.sp() points to callee-arguments | |
| 1053 oop frame::retrieve_receiver(RegisterMap* reg_map) { | |
| 1054 frame caller = *this; | |
| 1055 | |
| 1056 // First consult the ADLC on where it puts parameter 0 for this signature. | |
| 1057 VMReg reg = SharedRuntime::name_for_receiver(); | |
| 1058 oop r = *caller.oopmapreg_to_location(reg, reg_map); | |
| 1059 assert( Universe::heap()->is_in_or_null(r), "bad receiver" ); | |
| 1060 return r; | |
| 1061 } | |
| 1062 | |
| 1063 | |
| 1064 oop* frame::oopmapreg_to_location(VMReg reg, const RegisterMap* reg_map) const { | |
| 1065 if(reg->is_reg()) { | |
| 1066 // If it is passed in a register, it got spilled in the stub frame. | |
| 1067 return (oop *)reg_map->location(reg); | |
| 1068 } else { | |
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1069 int sp_offset_in_bytes = reg->reg2stack() * VMRegImpl::stack_slot_size; |
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1070 return (oop*)(((address)unextended_sp()) + sp_offset_in_bytes); |
| 0 | 1071 } |
| 1072 } | |
| 1073 | |
| 2019 | 1074 BasicLock* frame::get_native_monitor() { |
| 1075 nmethod* nm = (nmethod*)_cb; | |
| 1076 assert(_cb != NULL && _cb->is_nmethod() && nm->method()->is_native(), | |
| 1077 "Should not call this unless it's a native nmethod"); | |
| 1078 int byte_offset = in_bytes(nm->native_basic_lock_sp_offset()); | |
| 0 | 1079 assert(byte_offset >= 0, "should not see invalid offset"); |
| 1080 return (BasicLock*) &sp()[byte_offset / wordSize]; | |
| 1081 } | |
| 1082 | |
| 2019 | 1083 oop frame::get_native_receiver() { |
| 1084 nmethod* nm = (nmethod*)_cb; | |
| 1085 assert(_cb != NULL && _cb->is_nmethod() && nm->method()->is_native(), | |
| 1086 "Should not call this unless it's a native nmethod"); | |
| 1087 int byte_offset = in_bytes(nm->native_receiver_sp_offset()); | |
| 0 | 1088 assert(byte_offset >= 0, "should not see invalid offset"); |
| 1089 oop owner = ((oop*) sp())[byte_offset / wordSize]; | |
| 1090 assert( Universe::heap()->is_in(owner), "bad receiver" ); | |
| 1091 return owner; | |
| 1092 } | |
| 1093 | |
| 1094 void frame::oops_entry_do(OopClosure* f, const RegisterMap* map) { | |
| 1095 assert(map != NULL, "map must be set"); | |
| 1096 if (map->include_argument_oops()) { | |
| 1097 // must collect argument oops, as nobody else is doing it | |
| 1098 Thread *thread = Thread::current(); | |
| 1099 methodHandle m (thread, entry_frame_call_wrapper()->callee_method()); | |
| 1100 symbolHandle signature (thread, m->signature()); | |
| 1101 EntryFrameOopFinder finder(this, signature, m->is_static()); | |
| 1102 finder.arguments_do(f); | |
| 1103 } | |
| 1104 // Traverse the Handle Block saved in the entry frame | |
| 1105 entry_frame_call_wrapper()->oops_do(f); | |
| 1106 } | |
| 1107 | |
| 1108 | |
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1109 void frame::oops_do_internal(OopClosure* f, CodeBlobClosure* cf, RegisterMap* map, bool use_interpreter_oop_map_cache) { |
|
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1110 #ifndef PRODUCT |
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1111 // simulate GC crash here to dump java thread in error report |
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1112 if (CrashGCForDumpingJavaThread) { |
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1113 char *t = NULL; |
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1114 *t = 'c'; |
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1115 } |
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1116 #endif |
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1117 if (is_interpreted_frame()) { |
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1118 oops_interpreted_do(f, map, use_interpreter_oop_map_cache); |
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1119 } else if (is_entry_frame()) { |
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1120 oops_entry_do(f, map); |
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1121 } else if (CodeCache::contains(pc())) { |
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1122 oops_code_blob_do(f, cf, map); |
| 1692 | 1123 #ifdef SHARK |
| 1124 } else if (is_fake_stub_frame()) { | |
| 1125 // nothing to do | |
| 1126 #endif // SHARK | |
| 0 | 1127 } else { |
| 1128 ShouldNotReachHere(); | |
| 1129 } | |
| 1130 } | |
| 1131 | |
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1132 void frame::nmethods_do(CodeBlobClosure* cf) { |
| 0 | 1133 if (_cb != NULL && _cb->is_nmethod()) { |
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1134 cf->do_code_blob(_cb); |
| 0 | 1135 } |
| 1136 } | |
| 1137 | |
| 1138 | |
| 1139 void frame::gc_prologue() { | |
| 1140 if (is_interpreted_frame()) { | |
| 1141 // set bcx to bci to become methodOop position independent during GC | |
| 1142 interpreter_frame_set_bcx(interpreter_frame_bci()); | |
| 1143 } | |
| 1144 } | |
| 1145 | |
| 1146 | |
| 1147 void frame::gc_epilogue() { | |
| 1148 if (is_interpreted_frame()) { | |
| 1149 // set bcx back to bcp for interpreter | |
| 1150 interpreter_frame_set_bcx((intptr_t)interpreter_frame_bcp()); | |
| 1151 } | |
| 1152 // call processor specific epilog function | |
| 1153 pd_gc_epilog(); | |
| 1154 } | |
| 1155 | |
| 1156 | |
| 1157 # ifdef ENABLE_ZAP_DEAD_LOCALS | |
| 1158 | |
| 1159 void frame::CheckValueClosure::do_oop(oop* p) { | |
| 1160 if (CheckOopishValues && Universe::heap()->is_in_reserved(*p)) { | |
| 1161 warning("value @ " INTPTR_FORMAT " looks oopish (" INTPTR_FORMAT ") (thread = " INTPTR_FORMAT ")", p, (address)*p, Thread::current()); | |
| 1162 } | |
| 1163 } | |
| 1164 frame::CheckValueClosure frame::_check_value; | |
| 1165 | |
| 1166 | |
| 1167 void frame::CheckOopClosure::do_oop(oop* p) { | |
| 1168 if (*p != NULL && !(*p)->is_oop()) { | |
| 1169 warning("value @ " INTPTR_FORMAT " should be an oop (" INTPTR_FORMAT ") (thread = " INTPTR_FORMAT ")", p, (address)*p, Thread::current()); | |
| 1170 } | |
| 1171 } | |
| 1172 frame::CheckOopClosure frame::_check_oop; | |
| 1173 | |
| 1174 void frame::check_derived_oop(oop* base, oop* derived) { | |
| 1175 _check_oop.do_oop(base); | |
| 1176 } | |
| 1177 | |
| 1178 | |
| 1179 void frame::ZapDeadClosure::do_oop(oop* p) { | |
| 1180 if (TraceZapDeadLocals) tty->print_cr("zapping @ " INTPTR_FORMAT " containing " INTPTR_FORMAT, p, (address)*p); | |
| 1181 // Need cast because on _LP64 the conversion to oop is ambiguous. Constant | |
| 1182 // can be either long or int. | |
| 1183 *p = (oop)(int)0xbabebabe; | |
| 1184 } | |
| 1185 frame::ZapDeadClosure frame::_zap_dead; | |
| 1186 | |
| 1187 void frame::zap_dead_locals(JavaThread* thread, const RegisterMap* map) { | |
| 1188 assert(thread == Thread::current(), "need to synchronize to do this to another thread"); | |
| 1189 // Tracing - part 1 | |
| 1190 if (TraceZapDeadLocals) { | |
| 1191 ResourceMark rm(thread); | |
| 1192 tty->print_cr("--------------------------------------------------------------------------------"); | |
| 1193 tty->print("Zapping dead locals in "); | |
| 1194 print_on(tty); | |
| 1195 tty->cr(); | |
| 1196 } | |
| 1197 // Zapping | |
| 1198 if (is_entry_frame ()) zap_dead_entry_locals (thread, map); | |
| 1199 else if (is_interpreted_frame()) zap_dead_interpreted_locals(thread, map); | |
| 1200 else if (is_compiled_frame()) zap_dead_compiled_locals (thread, map); | |
| 1201 | |
| 1202 else | |
| 1203 // could be is_runtime_frame | |
| 1204 // so remove error: ShouldNotReachHere(); | |
| 1205 ; | |
| 1206 // Tracing - part 2 | |
| 1207 if (TraceZapDeadLocals) { | |
| 1208 tty->cr(); | |
| 1209 } | |
| 1210 } | |
| 1211 | |
| 1212 | |
| 1213 void frame::zap_dead_interpreted_locals(JavaThread *thread, const RegisterMap* map) { | |
| 1214 // get current interpreter 'pc' | |
| 1215 assert(is_interpreted_frame(), "Not an interpreted frame"); | |
| 1216 methodOop m = interpreter_frame_method(); | |
| 1217 int bci = interpreter_frame_bci(); | |
| 1218 | |
| 1219 int max_locals = m->is_native() ? m->size_of_parameters() : m->max_locals(); | |
| 1220 | |
| 1506 | 1221 // process dynamic part |
| 1222 InterpreterFrameClosure value_blk(this, max_locals, m->max_stack(), | |
| 1223 &_check_value); | |
| 1224 InterpreterFrameClosure oop_blk(this, max_locals, m->max_stack(), | |
| 1225 &_check_oop ); | |
| 1226 InterpreterFrameClosure dead_blk(this, max_locals, m->max_stack(), | |
| 1227 &_zap_dead ); | |
| 0 | 1228 |
| 1506 | 1229 // get frame map |
| 1230 InterpreterOopMap mask; | |
| 1231 m->mask_for(bci, &mask); | |
| 1232 mask.iterate_all( &oop_blk, &value_blk, &dead_blk); | |
| 0 | 1233 } |
| 1234 | |
| 1235 | |
| 1236 void frame::zap_dead_compiled_locals(JavaThread* thread, const RegisterMap* reg_map) { | |
| 1237 | |
| 1238 ResourceMark rm(thread); | |
| 1239 assert(_cb != NULL, "sanity check"); | |
| 1240 if (_cb->oop_maps() != NULL) { | |
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1241 OopMapSet::all_do(this, reg_map, &_check_oop, check_derived_oop, &_check_value); |
| 0 | 1242 } |
| 1243 } | |
| 1244 | |
| 1245 | |
| 1246 void frame::zap_dead_entry_locals(JavaThread*, const RegisterMap*) { | |
| 1247 if (TraceZapDeadLocals) warning("frame::zap_dead_entry_locals unimplemented"); | |
| 1248 } | |
| 1249 | |
| 1250 | |
| 1251 void frame::zap_dead_deoptimized_locals(JavaThread*, const RegisterMap*) { | |
| 1252 if (TraceZapDeadLocals) warning("frame::zap_dead_deoptimized_locals unimplemented"); | |
| 1253 } | |
| 1254 | |
| 1255 # endif // ENABLE_ZAP_DEAD_LOCALS | |
| 1256 | |
| 1257 void frame::verify(const RegisterMap* map) { | |
| 1258 // for now make sure receiver type is correct | |
| 1259 if (is_interpreted_frame()) { | |
| 1260 methodOop method = interpreter_frame_method(); | |
| 1261 guarantee(method->is_method(), "method is wrong in frame::verify"); | |
| 1262 if (!method->is_static()) { | |
| 1263 // fetch the receiver | |
| 1264 oop* p = (oop*) interpreter_frame_local_at(0); | |
| 1265 // make sure we have the right receiver type | |
| 1266 } | |
| 1267 } | |
| 1268 COMPILER2_PRESENT(assert(DerivedPointerTable::is_empty(), "must be empty before verify");) | |
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1269 oops_do_internal(&VerifyOopClosure::verify_oop, NULL, (RegisterMap*)map, false); |
| 0 | 1270 } |
| 1271 | |
| 1272 | |
| 1273 #ifdef ASSERT | |
| 1274 bool frame::verify_return_pc(address x) { | |
| 1275 if (StubRoutines::returns_to_call_stub(x)) { | |
| 1276 return true; | |
| 1277 } | |
| 1278 if (CodeCache::contains(x)) { | |
| 1279 return true; | |
| 1280 } | |
| 1281 if (Interpreter::contains(x)) { | |
| 1282 return true; | |
| 1283 } | |
| 1284 return false; | |
| 1285 } | |
| 1286 #endif | |
| 1287 | |
| 1288 | |
| 1289 #ifdef ASSERT | |
| 1290 void frame::interpreter_frame_verify_monitor(BasicObjectLock* value) const { | |
| 1291 assert(is_interpreted_frame(), "Not an interpreted frame"); | |
| 1292 // verify that the value is in the right part of the frame | |
| 1293 address low_mark = (address) interpreter_frame_monitor_end(); | |
| 1294 address high_mark = (address) interpreter_frame_monitor_begin(); | |
| 1295 address current = (address) value; | |
| 1296 | |
| 1297 const int monitor_size = frame::interpreter_frame_monitor_size(); | |
| 1298 guarantee((high_mark - current) % monitor_size == 0 , "Misaligned top of BasicObjectLock*"); | |
| 1299 guarantee( high_mark > current , "Current BasicObjectLock* higher than high_mark"); | |
| 1300 | |
| 1301 guarantee((current - low_mark) % monitor_size == 0 , "Misaligned bottom of BasicObjectLock*"); | |
| 1302 guarantee( current >= low_mark , "Current BasicObjectLock* below than low_mark"); | |
| 1303 } | |
| 1304 #endif | |
| 1305 | |
| 1306 | |
| 1307 //----------------------------------------------------------------------------------- | |
| 1308 // StackFrameStream implementation | |
| 1309 | |
| 1310 StackFrameStream::StackFrameStream(JavaThread *thread, bool update) : _reg_map(thread, update) { | |
| 1311 assert(thread->has_last_Java_frame(), "sanity check"); | |
| 1312 _fr = thread->last_frame(); | |
| 1313 _is_done = false; | |
| 1314 } |