codeBlob.cpp revision 3602:da91efe96a93
1/* 2 * Copyright (c) 1998, 2012, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 * 23 */ 24 25#include "precompiled.hpp" 26#include "code/codeBlob.hpp" 27#include "code/codeCache.hpp" 28#include "code/relocInfo.hpp" 29#include "compiler/disassembler.hpp" 30#include "interpreter/bytecode.hpp" 31#include "memory/allocation.inline.hpp" 32#include "memory/heap.hpp" 33#include "oops/oop.inline.hpp" 34#include "prims/forte.hpp" 35#include "runtime/handles.inline.hpp" 36#include "runtime/interfaceSupport.hpp" 37#include "runtime/mutexLocker.hpp" 38#include "runtime/safepoint.hpp" 39#include "runtime/sharedRuntime.hpp" 40#include "runtime/vframe.hpp" 41#include "services/memoryService.hpp" 42#ifdef TARGET_ARCH_x86 43# include "nativeInst_x86.hpp" 44#endif 45#ifdef TARGET_ARCH_sparc 46# include "nativeInst_sparc.hpp" 47#endif 48#ifdef TARGET_ARCH_zero 49# include "nativeInst_zero.hpp" 50#endif 51#ifdef TARGET_ARCH_arm 52# include "nativeInst_arm.hpp" 53#endif 54#ifdef TARGET_ARCH_ppc 55# include "nativeInst_ppc.hpp" 56#endif 57#ifdef COMPILER1 58#include "c1/c1_Runtime1.hpp" 59#endif 60 61unsigned int align_code_offset(int offset) { 62 // align the size to CodeEntryAlignment 63 return 64 ((offset + (int)CodeHeap::header_size() + (CodeEntryAlignment-1)) & ~(CodeEntryAlignment-1)) 65 - (int)CodeHeap::header_size(); 66} 67 68 69// This must be consistent with the CodeBlob constructor's layout actions. 70unsigned int CodeBlob::allocation_size(CodeBuffer* cb, int header_size) { 71 unsigned int size = header_size; 72 size += round_to(cb->total_relocation_size(), oopSize); 73 // align the size to CodeEntryAlignment 74 size = align_code_offset(size); 75 size += round_to(cb->total_content_size(), oopSize); 76 size += round_to(cb->total_oop_size(), oopSize); 77 size += round_to(cb->total_metadata_size(), oopSize); 78 return size; 79} 80 81 82// Creates a simple CodeBlob. Sets up the size of the different regions. 83CodeBlob::CodeBlob(const char* name, int header_size, int size, int frame_complete, int locs_size) { 84 assert(size == round_to(size, oopSize), "unaligned size"); 85 assert(locs_size == round_to(locs_size, oopSize), "unaligned size"); 86 assert(header_size == round_to(header_size, oopSize), "unaligned size"); 87 assert(!UseRelocIndex, "no space allocated for reloc index yet"); 88 89 // Note: If UseRelocIndex is enabled, there needs to be (at least) one 90 // extra word for the relocation information, containing the reloc 91 // index table length. Unfortunately, the reloc index table imple- 92 // mentation is not easily understandable and thus it is not clear 93 // what exactly the format is supposed to be. For now, we just turn 94 // off the use of this table (gri 7/6/2000). 95 96 _name = name; 97 _size = size; 98 _frame_complete_offset = frame_complete; 99 _header_size = header_size; 100 _relocation_size = locs_size; 101 _content_offset = align_code_offset(header_size + _relocation_size); 102 _code_offset = _content_offset; 103 _data_offset = size; 104 _frame_size = 0; 105 set_oop_maps(NULL); 106} 107 108 109// Creates a CodeBlob from a CodeBuffer. Sets up the size of the different regions, 110// and copy code and relocation info. 111CodeBlob::CodeBlob( 112 const char* name, 113 CodeBuffer* cb, 114 int header_size, 115 int size, 116 int frame_complete, 117 int frame_size, 118 OopMapSet* oop_maps 119) { 120 assert(size == round_to(size, oopSize), "unaligned size"); 121 assert(header_size == round_to(header_size, oopSize), "unaligned size"); 122 123 _name = name; 124 _size = size; 125 _frame_complete_offset = frame_complete; 126 _header_size = header_size; 127 _relocation_size = round_to(cb->total_relocation_size(), oopSize); 128 _content_offset = align_code_offset(header_size + _relocation_size); 129 _code_offset = _content_offset + cb->total_offset_of(cb->insts()); 130 _data_offset = _content_offset + round_to(cb->total_content_size(), oopSize); 131 assert(_data_offset <= size, "codeBlob is too small"); 132 133 cb->copy_code_and_locs_to(this); 134 set_oop_maps(oop_maps); 135 _frame_size = frame_size; 136#ifdef COMPILER1 137 // probably wrong for tiered 138 assert(_frame_size >= -1, "must use frame size or -1 for runtime stubs"); 139#endif // COMPILER1 140} 141 142 143void CodeBlob::set_oop_maps(OopMapSet* p) { 144 // Danger Will Robinson! This method allocates a big 145 // chunk of memory, its your job to free it. 146 if (p != NULL) { 147 // We need to allocate a chunk big enough to hold the OopMapSet and all of its OopMaps 148 _oop_maps = (OopMapSet* )NEW_C_HEAP_ARRAY(unsigned char, p->heap_size(), mtCode); 149 p->copy_to((address)_oop_maps); 150 } else { 151 _oop_maps = NULL; 152 } 153} 154 155 156void CodeBlob::trace_new_stub(CodeBlob* stub, const char* name1, const char* name2) { 157 // Do not hold the CodeCache lock during name formatting. 158 assert(!CodeCache_lock->owned_by_self(), "release CodeCache before registering the stub"); 159 160 if (stub != NULL) { 161 char stub_id[256]; 162 assert(strlen(name1) + strlen(name2) < sizeof(stub_id), ""); 163 jio_snprintf(stub_id, sizeof(stub_id), "%s%s", name1, name2); 164 if (PrintStubCode) { 165 tty->print_cr("Decoding %s " INTPTR_FORMAT, stub_id, (intptr_t) stub); 166 Disassembler::decode(stub->code_begin(), stub->code_end()); 167 } 168 Forte::register_stub(stub_id, stub->code_begin(), stub->code_end()); 169 170 if (JvmtiExport::should_post_dynamic_code_generated()) { 171 const char* stub_name = name2; 172 if (name2[0] == '\0') stub_name = name1; 173 JvmtiExport::post_dynamic_code_generated(stub_name, stub->code_begin(), stub->code_end()); 174 } 175 } 176 177 // Track memory usage statistic after releasing CodeCache_lock 178 MemoryService::track_code_cache_memory_usage(); 179} 180 181 182void CodeBlob::flush() { 183 if (_oop_maps) { 184 FREE_C_HEAP_ARRAY(unsigned char, _oop_maps, mtCode); 185 _oop_maps = NULL; 186 } 187 _comments.free(); 188} 189 190 191OopMap* CodeBlob::oop_map_for_return_address(address return_address) { 192 assert(oop_maps() != NULL, "nope"); 193 return oop_maps()->find_map_at_offset((intptr_t) return_address - (intptr_t) code_begin()); 194} 195 196 197//---------------------------------------------------------------------------------------------------- 198// Implementation of BufferBlob 199 200 201BufferBlob::BufferBlob(const char* name, int size) 202: CodeBlob(name, sizeof(BufferBlob), size, CodeOffsets::frame_never_safe, /*locs_size:*/ 0) 203{} 204 205BufferBlob* BufferBlob::create(const char* name, int buffer_size) { 206 ThreadInVMfromUnknown __tiv; // get to VM state in case we block on CodeCache_lock 207 208 BufferBlob* blob = NULL; 209 unsigned int size = sizeof(BufferBlob); 210 // align the size to CodeEntryAlignment 211 size = align_code_offset(size); 212 size += round_to(buffer_size, oopSize); 213 assert(name != NULL, "must provide a name"); 214 { 215 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); 216 blob = new (size) BufferBlob(name, size); 217 } 218 // Track memory usage statistic after releasing CodeCache_lock 219 MemoryService::track_code_cache_memory_usage(); 220 221 return blob; 222} 223 224 225BufferBlob::BufferBlob(const char* name, int size, CodeBuffer* cb) 226 : CodeBlob(name, cb, sizeof(BufferBlob), size, CodeOffsets::frame_never_safe, 0, NULL) 227{} 228 229BufferBlob* BufferBlob::create(const char* name, CodeBuffer* cb) { 230 ThreadInVMfromUnknown __tiv; // get to VM state in case we block on CodeCache_lock 231 232 BufferBlob* blob = NULL; 233 unsigned int size = allocation_size(cb, sizeof(BufferBlob)); 234 assert(name != NULL, "must provide a name"); 235 { 236 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); 237 blob = new (size) BufferBlob(name, size, cb); 238 } 239 // Track memory usage statistic after releasing CodeCache_lock 240 MemoryService::track_code_cache_memory_usage(); 241 242 return blob; 243} 244 245 246void* BufferBlob::operator new(size_t s, unsigned size) { 247 void* p = CodeCache::allocate(size); 248 return p; 249} 250 251 252void BufferBlob::free( BufferBlob *blob ) { 253 ThreadInVMfromUnknown __tiv; // get to VM state in case we block on CodeCache_lock 254 { 255 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); 256 CodeCache::free((CodeBlob*)blob); 257 } 258 // Track memory usage statistic after releasing CodeCache_lock 259 MemoryService::track_code_cache_memory_usage(); 260} 261 262 263//---------------------------------------------------------------------------------------------------- 264// Implementation of AdapterBlob 265 266AdapterBlob::AdapterBlob(int size, CodeBuffer* cb) : 267 BufferBlob("I2C/C2I adapters", size, cb) { 268 CodeCache::commit(this); 269} 270 271AdapterBlob* AdapterBlob::create(CodeBuffer* cb) { 272 ThreadInVMfromUnknown __tiv; // get to VM state in case we block on CodeCache_lock 273 274 AdapterBlob* blob = NULL; 275 unsigned int size = allocation_size(cb, sizeof(AdapterBlob)); 276 { 277 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); 278 blob = new (size) AdapterBlob(size, cb); 279 } 280 // Track memory usage statistic after releasing CodeCache_lock 281 MemoryService::track_code_cache_memory_usage(); 282 283 return blob; 284} 285 286 287//---------------------------------------------------------------------------------------------------- 288// Implementation of MethodHandlesAdapterBlob 289 290MethodHandlesAdapterBlob* MethodHandlesAdapterBlob::create(int buffer_size) { 291 ThreadInVMfromUnknown __tiv; // get to VM state in case we block on CodeCache_lock 292 293 MethodHandlesAdapterBlob* blob = NULL; 294 unsigned int size = sizeof(MethodHandlesAdapterBlob); 295 // align the size to CodeEntryAlignment 296 size = align_code_offset(size); 297 size += round_to(buffer_size, oopSize); 298 { 299 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); 300 blob = new (size) MethodHandlesAdapterBlob(size); 301 } 302 // Track memory usage statistic after releasing CodeCache_lock 303 MemoryService::track_code_cache_memory_usage(); 304 305 return blob; 306} 307 308 309//---------------------------------------------------------------------------------------------------- 310// Implementation of RuntimeStub 311 312RuntimeStub::RuntimeStub( 313 const char* name, 314 CodeBuffer* cb, 315 int size, 316 int frame_complete, 317 int frame_size, 318 OopMapSet* oop_maps, 319 bool caller_must_gc_arguments 320) 321: CodeBlob(name, cb, sizeof(RuntimeStub), size, frame_complete, frame_size, oop_maps) 322{ 323 _caller_must_gc_arguments = caller_must_gc_arguments; 324} 325 326 327RuntimeStub* RuntimeStub::new_runtime_stub(const char* stub_name, 328 CodeBuffer* cb, 329 int frame_complete, 330 int frame_size, 331 OopMapSet* oop_maps, 332 bool caller_must_gc_arguments) 333{ 334 RuntimeStub* stub = NULL; 335 ThreadInVMfromUnknown __tiv; // get to VM state in case we block on CodeCache_lock 336 { 337 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); 338 unsigned int size = allocation_size(cb, sizeof(RuntimeStub)); 339 stub = new (size) RuntimeStub(stub_name, cb, size, frame_complete, frame_size, oop_maps, caller_must_gc_arguments); 340 } 341 342 trace_new_stub(stub, "RuntimeStub - ", stub_name); 343 344 return stub; 345} 346 347 348void* RuntimeStub::operator new(size_t s, unsigned size) { 349 void* p = CodeCache::allocate(size); 350 if (!p) fatal("Initial size of CodeCache is too small"); 351 return p; 352} 353 354// operator new shared by all singletons: 355void* SingletonBlob::operator new(size_t s, unsigned size) { 356 void* p = CodeCache::allocate(size); 357 if (!p) fatal("Initial size of CodeCache is too small"); 358 return p; 359} 360 361 362//---------------------------------------------------------------------------------------------------- 363// Implementation of DeoptimizationBlob 364 365DeoptimizationBlob::DeoptimizationBlob( 366 CodeBuffer* cb, 367 int size, 368 OopMapSet* oop_maps, 369 int unpack_offset, 370 int unpack_with_exception_offset, 371 int unpack_with_reexecution_offset, 372 int frame_size 373) 374: SingletonBlob("DeoptimizationBlob", cb, sizeof(DeoptimizationBlob), size, frame_size, oop_maps) 375{ 376 _unpack_offset = unpack_offset; 377 _unpack_with_exception = unpack_with_exception_offset; 378 _unpack_with_reexecution = unpack_with_reexecution_offset; 379#ifdef COMPILER1 380 _unpack_with_exception_in_tls = -1; 381#endif 382} 383 384 385DeoptimizationBlob* DeoptimizationBlob::create( 386 CodeBuffer* cb, 387 OopMapSet* oop_maps, 388 int unpack_offset, 389 int unpack_with_exception_offset, 390 int unpack_with_reexecution_offset, 391 int frame_size) 392{ 393 DeoptimizationBlob* blob = NULL; 394 ThreadInVMfromUnknown __tiv; // get to VM state in case we block on CodeCache_lock 395 { 396 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); 397 unsigned int size = allocation_size(cb, sizeof(DeoptimizationBlob)); 398 blob = new (size) DeoptimizationBlob(cb, 399 size, 400 oop_maps, 401 unpack_offset, 402 unpack_with_exception_offset, 403 unpack_with_reexecution_offset, 404 frame_size); 405 } 406 407 trace_new_stub(blob, "DeoptimizationBlob"); 408 409 return blob; 410} 411 412 413//---------------------------------------------------------------------------------------------------- 414// Implementation of UncommonTrapBlob 415 416#ifdef COMPILER2 417UncommonTrapBlob::UncommonTrapBlob( 418 CodeBuffer* cb, 419 int size, 420 OopMapSet* oop_maps, 421 int frame_size 422) 423: SingletonBlob("UncommonTrapBlob", cb, sizeof(UncommonTrapBlob), size, frame_size, oop_maps) 424{} 425 426 427UncommonTrapBlob* UncommonTrapBlob::create( 428 CodeBuffer* cb, 429 OopMapSet* oop_maps, 430 int frame_size) 431{ 432 UncommonTrapBlob* blob = NULL; 433 ThreadInVMfromUnknown __tiv; // get to VM state in case we block on CodeCache_lock 434 { 435 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); 436 unsigned int size = allocation_size(cb, sizeof(UncommonTrapBlob)); 437 blob = new (size) UncommonTrapBlob(cb, size, oop_maps, frame_size); 438 } 439 440 trace_new_stub(blob, "UncommonTrapBlob"); 441 442 return blob; 443} 444 445 446#endif // COMPILER2 447 448 449//---------------------------------------------------------------------------------------------------- 450// Implementation of ExceptionBlob 451 452#ifdef COMPILER2 453ExceptionBlob::ExceptionBlob( 454 CodeBuffer* cb, 455 int size, 456 OopMapSet* oop_maps, 457 int frame_size 458) 459: SingletonBlob("ExceptionBlob", cb, sizeof(ExceptionBlob), size, frame_size, oop_maps) 460{} 461 462 463ExceptionBlob* ExceptionBlob::create( 464 CodeBuffer* cb, 465 OopMapSet* oop_maps, 466 int frame_size) 467{ 468 ExceptionBlob* blob = NULL; 469 ThreadInVMfromUnknown __tiv; // get to VM state in case we block on CodeCache_lock 470 { 471 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); 472 unsigned int size = allocation_size(cb, sizeof(ExceptionBlob)); 473 blob = new (size) ExceptionBlob(cb, size, oop_maps, frame_size); 474 } 475 476 trace_new_stub(blob, "ExceptionBlob"); 477 478 return blob; 479} 480 481 482#endif // COMPILER2 483 484 485//---------------------------------------------------------------------------------------------------- 486// Implementation of SafepointBlob 487 488SafepointBlob::SafepointBlob( 489 CodeBuffer* cb, 490 int size, 491 OopMapSet* oop_maps, 492 int frame_size 493) 494: SingletonBlob("SafepointBlob", cb, sizeof(SafepointBlob), size, frame_size, oop_maps) 495{} 496 497 498SafepointBlob* SafepointBlob::create( 499 CodeBuffer* cb, 500 OopMapSet* oop_maps, 501 int frame_size) 502{ 503 SafepointBlob* blob = NULL; 504 ThreadInVMfromUnknown __tiv; // get to VM state in case we block on CodeCache_lock 505 { 506 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); 507 unsigned int size = allocation_size(cb, sizeof(SafepointBlob)); 508 blob = new (size) SafepointBlob(cb, size, oop_maps, frame_size); 509 } 510 511 trace_new_stub(blob, "SafepointBlob"); 512 513 return blob; 514} 515 516 517//---------------------------------------------------------------------------------------------------- 518// Verification and printing 519 520void CodeBlob::verify() { 521 ShouldNotReachHere(); 522} 523 524void CodeBlob::print_on(outputStream* st) const { 525 st->print_cr("[CodeBlob (" INTPTR_FORMAT ")]", this); 526 st->print_cr("Framesize: %d", _frame_size); 527} 528 529void CodeBlob::print_value_on(outputStream* st) const { 530 st->print_cr("[CodeBlob]"); 531} 532 533void BufferBlob::verify() { 534 // unimplemented 535} 536 537void BufferBlob::print_on(outputStream* st) const { 538 CodeBlob::print_on(st); 539 print_value_on(st); 540} 541 542void BufferBlob::print_value_on(outputStream* st) const { 543 st->print_cr("BufferBlob (" INTPTR_FORMAT ") used for %s", this, name()); 544} 545 546void RuntimeStub::verify() { 547 // unimplemented 548} 549 550void RuntimeStub::print_on(outputStream* st) const { 551 CodeBlob::print_on(st); 552 st->print("Runtime Stub (" INTPTR_FORMAT "): ", this); 553 st->print_cr(name()); 554 Disassembler::decode((CodeBlob*)this, st); 555} 556 557void RuntimeStub::print_value_on(outputStream* st) const { 558 st->print("RuntimeStub (" INTPTR_FORMAT "): ", this); st->print(name()); 559} 560 561void SingletonBlob::verify() { 562 // unimplemented 563} 564 565void SingletonBlob::print_on(outputStream* st) const { 566 CodeBlob::print_on(st); 567 st->print_cr(name()); 568 Disassembler::decode((CodeBlob*)this, st); 569} 570 571void SingletonBlob::print_value_on(outputStream* st) const { 572 st->print_cr(name()); 573} 574 575void DeoptimizationBlob::print_value_on(outputStream* st) const { 576 st->print_cr("Deoptimization (frame not available)"); 577} 578