Mercurial > hg > graal-compiler
annotate src/share/vm/runtime/interfaceSupport.hpp @ 2426:1d1603768966
7010070: Update all 2010 Oracle-changed OpenJDK files to have the proper copyright dates - second pass
Summary: Update the copyright to be 2010 on all changed files in OpenJDK
Reviewed-by: ohair
| author | trims |
|---|---|
| date | Tue, 05 Apr 2011 14:12:31 -0700 |
| parents | 3582bf76420e |
| children | f08d439fab8c |
| rev | line source |
|---|---|
| 0 | 1 /* |
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2 * Copyright (c) 1997, 2011, 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_INTERFACESUPPORT_HPP |
| 26 #define SHARE_VM_RUNTIME_INTERFACESUPPORT_HPP | |
| 27 | |
| 28 #include "memory/gcLocker.hpp" | |
| 29 #include "runtime/handles.inline.hpp" | |
| 30 #include "runtime/mutexLocker.hpp" | |
| 31 #include "runtime/orderAccess.hpp" | |
| 32 #include "runtime/os.hpp" | |
| 33 #include "runtime/safepoint.hpp" | |
| 34 #include "runtime/vmThread.hpp" | |
| 35 #include "utilities/globalDefinitions.hpp" | |
| 36 #include "utilities/preserveException.hpp" | |
| 37 #include "utilities/top.hpp" | |
| 38 #ifdef TARGET_OS_FAMILY_linux | |
| 39 # include "thread_linux.inline.hpp" | |
| 40 #endif | |
| 41 #ifdef TARGET_OS_FAMILY_solaris | |
| 42 # include "thread_solaris.inline.hpp" | |
| 43 #endif | |
| 44 #ifdef TARGET_OS_FAMILY_windows | |
| 45 # include "thread_windows.inline.hpp" | |
| 46 #endif | |
| 47 | |
| 0 | 48 // Wrapper for all entry points to the virtual machine. |
| 49 // The HandleMarkCleaner is a faster version of HandleMark. | |
| 50 // It relies on the fact that there is a HandleMark further | |
| 51 // down the stack (in JavaCalls::call_helper), and just resets | |
| 52 // to the saved values in that HandleMark. | |
| 53 | |
| 54 class HandleMarkCleaner: public StackObj { | |
| 55 private: | |
| 56 Thread* _thread; | |
| 57 public: | |
| 58 HandleMarkCleaner(Thread* thread) { | |
| 59 _thread = thread; | |
| 60 _thread->last_handle_mark()->push(); | |
| 61 } | |
| 62 ~HandleMarkCleaner() { | |
| 63 _thread->last_handle_mark()->pop_and_restore(); | |
| 64 } | |
| 65 | |
| 66 private: | |
| 67 inline void* operator new(size_t size, void* ptr) { | |
| 68 return ptr; | |
| 69 } | |
| 70 }; | |
| 71 | |
| 72 // InterfaceSupport provides functionality used by the __LEAF and __ENTRY | |
| 73 // macros. These macros are used to guard entry points into the VM and | |
| 74 // perform checks upon leave of the VM. | |
| 75 | |
| 76 | |
| 77 class InterfaceSupport: AllStatic { | |
| 78 # ifdef ASSERT | |
| 79 public: | |
| 80 static long _scavenge_alot_counter; | |
| 81 static long _fullgc_alot_counter; | |
| 82 static long _number_of_calls; | |
| 83 static long _fullgc_alot_invocation; | |
| 84 | |
| 85 // tracing | |
| 86 static void trace(const char* result_type, const char* header); | |
| 87 | |
| 88 // Helper methods used to implement +ScavengeALot and +FullGCALot | |
| 89 static void check_gc_alot() { if (ScavengeALot || FullGCALot) gc_alot(); } | |
| 90 static void gc_alot(); | |
| 91 | |
| 92 static void walk_stack_from(vframe* start_vf); | |
| 93 static void walk_stack(); | |
| 94 | |
| 95 # ifdef ENABLE_ZAP_DEAD_LOCALS | |
| 96 static void zap_dead_locals_old(); | |
| 97 # endif | |
| 98 | |
| 99 static void zombieAll(); | |
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100 static void unlinkSymbols(); |
| 0 | 101 static void deoptimizeAll(); |
| 102 static void stress_derived_pointers(); | |
| 103 static void verify_stack(); | |
| 104 static void verify_last_frame(); | |
| 105 # endif | |
| 106 | |
| 107 public: | |
| 108 // OS dependent stuff | |
| 1972 | 109 #ifdef TARGET_OS_FAMILY_linux |
| 110 # include "interfaceSupport_linux.hpp" | |
| 111 #endif | |
| 112 #ifdef TARGET_OS_FAMILY_solaris | |
| 113 # include "interfaceSupport_solaris.hpp" | |
| 114 #endif | |
| 115 #ifdef TARGET_OS_FAMILY_windows | |
| 116 # include "interfaceSupport_windows.hpp" | |
| 117 #endif | |
| 118 | |
| 0 | 119 }; |
| 120 | |
| 121 | |
| 122 // Basic class for all thread transition classes. | |
| 123 | |
| 124 class ThreadStateTransition : public StackObj { | |
| 125 protected: | |
| 126 JavaThread* _thread; | |
| 127 public: | |
| 128 ThreadStateTransition(JavaThread *thread) { | |
| 129 _thread = thread; | |
| 130 assert(thread != NULL && thread->is_Java_thread(), "must be Java thread"); | |
| 131 } | |
| 132 | |
| 133 // Change threadstate in a manner, so safepoint can detect changes. | |
| 134 // Time-critical: called on exit from every runtime routine | |
| 135 static inline void transition(JavaThread *thread, JavaThreadState from, JavaThreadState to) { | |
| 136 assert(from != _thread_in_Java, "use transition_from_java"); | |
| 137 assert(from != _thread_in_native, "use transition_from_native"); | |
| 138 assert((from & 1) == 0 && (to & 1) == 0, "odd numbers are transitions states"); | |
| 139 assert(thread->thread_state() == from, "coming from wrong thread state"); | |
| 140 // Change to transition state (assumes total store ordering! -Urs) | |
| 141 thread->set_thread_state((JavaThreadState)(from + 1)); | |
| 142 | |
| 143 // Make sure new state is seen by VM thread | |
| 144 if (os::is_MP()) { | |
| 145 if (UseMembar) { | |
| 146 // Force a fence between the write above and read below | |
| 147 OrderAccess::fence(); | |
| 148 } else { | |
| 149 // store to serialize page so VM thread can do pseudo remote membar | |
| 150 os::write_memory_serialize_page(thread); | |
| 151 } | |
| 152 } | |
| 153 | |
| 154 if (SafepointSynchronize::do_call_back()) { | |
| 155 SafepointSynchronize::block(thread); | |
| 156 } | |
| 157 thread->set_thread_state(to); | |
| 158 | |
| 159 CHECK_UNHANDLED_OOPS_ONLY(thread->clear_unhandled_oops();) | |
| 160 } | |
| 161 | |
| 162 // transition_and_fence must be used on any thread state transition | |
| 163 // where there might not be a Java call stub on the stack, in | |
| 164 // particular on Windows where the Structured Exception Handler is | |
| 165 // set up in the call stub. os::write_memory_serialize_page() can | |
| 166 // fault and we can't recover from it on Windows without a SEH in | |
| 167 // place. | |
| 168 static inline void transition_and_fence(JavaThread *thread, JavaThreadState from, JavaThreadState to) { | |
| 169 assert(thread->thread_state() == from, "coming from wrong thread state"); | |
| 170 assert((from & 1) == 0 && (to & 1) == 0, "odd numbers are transitions states"); | |
| 171 // Change to transition state (assumes total store ordering! -Urs) | |
| 172 thread->set_thread_state((JavaThreadState)(from + 1)); | |
| 173 | |
| 174 // Make sure new state is seen by VM thread | |
| 175 if (os::is_MP()) { | |
| 176 if (UseMembar) { | |
| 177 // Force a fence between the write above and read below | |
| 178 OrderAccess::fence(); | |
| 179 } else { | |
| 180 // Must use this rather than serialization page in particular on Windows | |
| 181 InterfaceSupport::serialize_memory(thread); | |
| 182 } | |
| 183 } | |
| 184 | |
| 185 if (SafepointSynchronize::do_call_back()) { | |
| 186 SafepointSynchronize::block(thread); | |
| 187 } | |
| 188 thread->set_thread_state(to); | |
| 189 | |
| 190 CHECK_UNHANDLED_OOPS_ONLY(thread->clear_unhandled_oops();) | |
| 191 } | |
| 192 | |
| 193 // Same as above, but assumes from = _thread_in_Java. This is simpler, since we | |
| 194 // never block on entry to the VM. This will break the code, since e.g. preserve arguments | |
| 195 // have not been setup. | |
| 196 static inline void transition_from_java(JavaThread *thread, JavaThreadState to) { | |
| 197 assert(thread->thread_state() == _thread_in_Java, "coming from wrong thread state"); | |
| 198 thread->set_thread_state(to); | |
| 199 } | |
| 200 | |
| 201 static inline void transition_from_native(JavaThread *thread, JavaThreadState to) { | |
| 202 assert((to & 1) == 0, "odd numbers are transitions states"); | |
| 203 assert(thread->thread_state() == _thread_in_native, "coming from wrong thread state"); | |
| 204 // Change to transition state (assumes total store ordering! -Urs) | |
| 205 thread->set_thread_state(_thread_in_native_trans); | |
| 206 | |
| 207 // Make sure new state is seen by GC thread | |
| 208 if (os::is_MP()) { | |
| 209 if (UseMembar) { | |
| 210 // Force a fence between the write above and read below | |
| 211 OrderAccess::fence(); | |
| 212 } else { | |
| 213 // Must use this rather than serialization page in particular on Windows | |
| 214 InterfaceSupport::serialize_memory(thread); | |
| 215 } | |
| 216 } | |
| 217 | |
| 218 // We never install asynchronous exceptions when coming (back) in | |
| 219 // to the runtime from native code because the runtime is not set | |
| 220 // up to handle exceptions floating around at arbitrary points. | |
| 221 if (SafepointSynchronize::do_call_back() || thread->is_suspend_after_native()) { | |
| 222 JavaThread::check_safepoint_and_suspend_for_native_trans(thread); | |
| 223 | |
| 224 // Clear unhandled oops anywhere where we could block, even if we don't. | |
| 225 CHECK_UNHANDLED_OOPS_ONLY(thread->clear_unhandled_oops();) | |
| 226 } | |
| 227 | |
| 228 thread->set_thread_state(to); | |
| 229 } | |
| 230 protected: | |
| 231 void trans(JavaThreadState from, JavaThreadState to) { transition(_thread, from, to); } | |
| 232 void trans_from_java(JavaThreadState to) { transition_from_java(_thread, to); } | |
| 233 void trans_from_native(JavaThreadState to) { transition_from_native(_thread, to); } | |
| 234 void trans_and_fence(JavaThreadState from, JavaThreadState to) { transition_and_fence(_thread, from, to); } | |
| 235 }; | |
| 236 | |
| 237 | |
| 238 class ThreadInVMfromJava : public ThreadStateTransition { | |
| 239 public: | |
| 240 ThreadInVMfromJava(JavaThread* thread) : ThreadStateTransition(thread) { | |
| 241 trans_from_java(_thread_in_vm); | |
| 242 } | |
| 243 ~ThreadInVMfromJava() { | |
| 244 trans(_thread_in_vm, _thread_in_Java); | |
| 245 // Check for pending. async. exceptions or suspends. | |
| 246 if (_thread->has_special_runtime_exit_condition()) _thread->handle_special_runtime_exit_condition(); | |
| 247 } | |
| 248 }; | |
| 249 | |
| 250 | |
| 251 class ThreadInVMfromUnknown { | |
| 252 private: | |
| 253 JavaThread* _thread; | |
| 254 public: | |
| 255 ThreadInVMfromUnknown() : _thread(NULL) { | |
| 256 Thread* t = Thread::current(); | |
| 257 if (t->is_Java_thread()) { | |
| 258 JavaThread* t2 = (JavaThread*) t; | |
| 259 if (t2->thread_state() == _thread_in_native) { | |
| 260 _thread = t2; | |
| 261 ThreadStateTransition::transition_from_native(t2, _thread_in_vm); | |
| 262 // Used to have a HandleMarkCleaner but that is dangerous as | |
| 263 // it could free a handle in our (indirect, nested) caller. | |
| 264 // We expect any handles will be short lived and figure we | |
| 265 // don't need an actual HandleMark. | |
| 266 } | |
| 267 } | |
| 268 } | |
| 269 ~ThreadInVMfromUnknown() { | |
| 270 if (_thread) { | |
| 271 ThreadStateTransition::transition_and_fence(_thread, _thread_in_vm, _thread_in_native); | |
| 272 } | |
| 273 } | |
| 274 }; | |
| 275 | |
| 276 | |
| 277 class ThreadInVMfromNative : public ThreadStateTransition { | |
| 278 public: | |
| 279 ThreadInVMfromNative(JavaThread* thread) : ThreadStateTransition(thread) { | |
| 280 trans_from_native(_thread_in_vm); | |
| 281 } | |
| 282 ~ThreadInVMfromNative() { | |
| 283 trans_and_fence(_thread_in_vm, _thread_in_native); | |
| 284 } | |
| 285 }; | |
| 286 | |
| 287 | |
| 288 class ThreadToNativeFromVM : public ThreadStateTransition { | |
| 289 public: | |
| 290 ThreadToNativeFromVM(JavaThread *thread) : ThreadStateTransition(thread) { | |
| 291 // We are leaving the VM at this point and going directly to native code. | |
| 292 // Block, if we are in the middle of a safepoint synchronization. | |
| 293 assert(!thread->owns_locks(), "must release all locks when leaving VM"); | |
| 294 thread->frame_anchor()->make_walkable(thread); | |
| 295 trans_and_fence(_thread_in_vm, _thread_in_native); | |
| 296 // Check for pending. async. exceptions or suspends. | |
| 297 if (_thread->has_special_runtime_exit_condition()) _thread->handle_special_runtime_exit_condition(false); | |
| 298 } | |
| 299 | |
| 300 ~ThreadToNativeFromVM() { | |
| 301 trans_from_native(_thread_in_vm); | |
| 302 // We don't need to clear_walkable because it will happen automagically when we return to java | |
| 303 } | |
| 304 }; | |
| 305 | |
| 306 | |
| 307 class ThreadBlockInVM : public ThreadStateTransition { | |
| 308 public: | |
| 309 ThreadBlockInVM(JavaThread *thread) | |
| 310 : ThreadStateTransition(thread) { | |
| 311 // Once we are blocked vm expects stack to be walkable | |
| 312 thread->frame_anchor()->make_walkable(thread); | |
| 313 trans_and_fence(_thread_in_vm, _thread_blocked); | |
| 314 } | |
| 315 ~ThreadBlockInVM() { | |
| 316 trans_and_fence(_thread_blocked, _thread_in_vm); | |
| 317 // We don't need to clear_walkable because it will happen automagically when we return to java | |
| 318 } | |
| 319 }; | |
| 320 | |
| 321 | |
| 322 // This special transition class is only used to prevent asynchronous exceptions | |
| 323 // from being installed on vm exit in situations where we can't tolerate them. | |
| 324 // See bugs: 4324348, 4854693, 4998314, 5040492, 5050705. | |
| 325 class ThreadInVMfromJavaNoAsyncException : public ThreadStateTransition { | |
| 326 public: | |
| 327 ThreadInVMfromJavaNoAsyncException(JavaThread* thread) : ThreadStateTransition(thread) { | |
| 328 trans_from_java(_thread_in_vm); | |
| 329 } | |
| 330 ~ThreadInVMfromJavaNoAsyncException() { | |
| 331 trans(_thread_in_vm, _thread_in_Java); | |
| 332 // NOTE: We do not check for pending. async. exceptions. | |
| 333 // If we did and moved the pending async exception over into the | |
| 334 // pending exception field, we would need to deopt (currently C2 | |
| 335 // only). However, to do so would require that we transition back | |
| 336 // to the _thread_in_vm state. Instead we postpone the handling of | |
| 337 // the async exception. | |
| 338 | |
| 339 // Check for pending. suspends only. | |
| 340 if (_thread->has_special_runtime_exit_condition()) | |
| 341 _thread->handle_special_runtime_exit_condition(false); | |
| 342 } | |
| 343 }; | |
| 344 | |
| 345 // Debug class instantiated in JRT_ENTRY and ITR_ENTRY macro. | |
| 346 // Can be used to verify properties on enter/exit of the VM. | |
| 347 | |
| 348 #ifdef ASSERT | |
| 349 class VMEntryWrapper { | |
| 350 public: | |
| 351 VMEntryWrapper() { | |
| 352 if (VerifyLastFrame) { | |
| 353 InterfaceSupport::verify_last_frame(); | |
| 354 } | |
| 355 } | |
| 356 | |
| 357 ~VMEntryWrapper() { | |
| 358 InterfaceSupport::check_gc_alot(); | |
| 359 if (WalkStackALot) { | |
| 360 InterfaceSupport::walk_stack(); | |
| 361 } | |
| 362 #ifdef ENABLE_ZAP_DEAD_LOCALS | |
| 363 if (ZapDeadLocalsOld) { | |
| 364 InterfaceSupport::zap_dead_locals_old(); | |
| 365 } | |
| 366 #endif | |
| 367 #ifdef COMPILER2 | |
| 368 // This option is not used by Compiler 1 | |
| 369 if (StressDerivedPointers) { | |
| 370 InterfaceSupport::stress_derived_pointers(); | |
| 371 } | |
| 372 #endif | |
| 373 if (DeoptimizeALot || DeoptimizeRandom) { | |
| 374 InterfaceSupport::deoptimizeAll(); | |
| 375 } | |
| 376 if (ZombieALot) { | |
| 377 InterfaceSupport::zombieAll(); | |
| 378 } | |
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379 if (UnlinkSymbolsALot) { |
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380 InterfaceSupport::unlinkSymbols(); |
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381 } |
| 0 | 382 // do verification AFTER potential deoptimization |
| 383 if (VerifyStack) { | |
| 384 InterfaceSupport::verify_stack(); | |
| 385 } | |
| 386 | |
| 387 } | |
| 388 }; | |
| 389 | |
| 390 | |
| 391 class VMNativeEntryWrapper { | |
| 392 public: | |
| 393 VMNativeEntryWrapper() { | |
| 394 if (GCALotAtAllSafepoints) InterfaceSupport::check_gc_alot(); | |
| 395 } | |
| 396 | |
| 397 ~VMNativeEntryWrapper() { | |
| 398 if (GCALotAtAllSafepoints) InterfaceSupport::check_gc_alot(); | |
| 399 } | |
| 400 }; | |
| 401 | |
| 402 #endif | |
| 403 | |
| 404 | |
| 405 // VM-internal runtime interface support | |
| 406 | |
| 407 #ifdef ASSERT | |
| 408 | |
| 409 class RuntimeHistogramElement : public HistogramElement { | |
| 410 public: | |
| 411 RuntimeHistogramElement(const char* name); | |
| 412 }; | |
| 413 | |
| 414 #define TRACE_CALL(result_type, header) \ | |
| 415 InterfaceSupport::_number_of_calls++; \ | |
| 416 if (TraceRuntimeCalls) \ | |
| 417 InterfaceSupport::trace(#result_type, #header); \ | |
| 418 if (CountRuntimeCalls) { \ | |
| 419 static RuntimeHistogramElement* e = new RuntimeHistogramElement(#header); \ | |
| 420 if (e != NULL) e->increment_count(); \ | |
| 421 } | |
| 422 #else | |
| 423 #define TRACE_CALL(result_type, header) \ | |
| 424 /* do nothing */ | |
| 425 #endif | |
| 426 | |
| 427 | |
| 428 // LEAF routines do not lock, GC or throw exceptions | |
| 429 | |
| 430 #define __LEAF(result_type, header) \ | |
| 431 TRACE_CALL(result_type, header) \ | |
| 432 debug_only(NoHandleMark __hm;) \ | |
| 433 /* begin of body */ | |
| 434 | |
| 435 | |
| 436 // ENTRY routines may lock, GC and throw exceptions | |
| 437 | |
| 438 #define __ENTRY(result_type, header, thread) \ | |
| 439 TRACE_CALL(result_type, header) \ | |
| 440 HandleMarkCleaner __hm(thread); \ | |
| 441 Thread* THREAD = thread; \ | |
| 442 /* begin of body */ | |
| 443 | |
| 444 | |
| 445 // QUICK_ENTRY routines behave like ENTRY but without a handle mark | |
| 446 | |
| 447 #define __QUICK_ENTRY(result_type, header, thread) \ | |
| 448 TRACE_CALL(result_type, header) \ | |
| 449 debug_only(NoHandleMark __hm;) \ | |
| 450 Thread* THREAD = thread; \ | |
| 451 /* begin of body */ | |
| 452 | |
| 453 | |
| 454 // Definitions for IRT (Interpreter Runtime) | |
| 455 // (thread is an argument passed in to all these routines) | |
| 456 | |
| 457 #define IRT_ENTRY(result_type, header) \ | |
| 458 result_type header { \ | |
| 459 ThreadInVMfromJava __tiv(thread); \ | |
| 460 __ENTRY(result_type, header, thread) \ | |
| 461 debug_only(VMEntryWrapper __vew;) | |
| 462 | |
| 463 | |
| 464 #define IRT_LEAF(result_type, header) \ | |
| 465 result_type header { \ | |
| 466 __LEAF(result_type, header) \ | |
| 467 debug_only(No_Safepoint_Verifier __nspv(true);) | |
| 468 | |
| 469 | |
| 470 #define IRT_ENTRY_NO_ASYNC(result_type, header) \ | |
| 471 result_type header { \ | |
| 472 ThreadInVMfromJavaNoAsyncException __tiv(thread); \ | |
| 473 __ENTRY(result_type, header, thread) \ | |
| 474 debug_only(VMEntryWrapper __vew;) | |
| 475 | |
| 476 // Another special case for nmethod_entry_point so the nmethod that the | |
| 477 // interpreter is about to branch to doesn't get flushed before as we | |
| 478 // branch to it's interpreter_entry_point. Skip stress testing here too. | |
| 479 // Also we don't allow async exceptions because it is just too painful. | |
| 480 #define IRT_ENTRY_FOR_NMETHOD(result_type, header) \ | |
| 481 result_type header { \ | |
| 482 nmethodLocker _nmlock(nm); \ | |
| 483 ThreadInVMfromJavaNoAsyncException __tiv(thread); \ | |
| 484 __ENTRY(result_type, header, thread) | |
| 485 | |
| 486 #define IRT_END } | |
| 487 | |
| 488 | |
| 489 // Definitions for JRT (Java (Compiler/Shared) Runtime) | |
| 490 | |
| 491 #define JRT_ENTRY(result_type, header) \ | |
| 492 result_type header { \ | |
| 493 ThreadInVMfromJava __tiv(thread); \ | |
| 494 __ENTRY(result_type, header, thread) \ | |
| 495 debug_only(VMEntryWrapper __vew;) | |
| 496 | |
| 497 | |
| 498 #define JRT_LEAF(result_type, header) \ | |
| 499 result_type header { \ | |
| 500 __LEAF(result_type, header) \ | |
| 501 debug_only(JRT_Leaf_Verifier __jlv;) | |
| 502 | |
| 503 | |
| 504 #define JRT_ENTRY_NO_ASYNC(result_type, header) \ | |
| 505 result_type header { \ | |
| 506 ThreadInVMfromJavaNoAsyncException __tiv(thread); \ | |
| 507 __ENTRY(result_type, header, thread) \ | |
| 508 debug_only(VMEntryWrapper __vew;) | |
| 509 | |
| 510 // Same as JRT Entry but allows for return value after the safepoint | |
| 511 // to get back into Java from the VM | |
| 512 #define JRT_BLOCK_ENTRY(result_type, header) \ | |
| 513 result_type header { \ | |
| 514 TRACE_CALL(result_type, header) \ | |
| 515 HandleMarkCleaner __hm(thread); | |
| 516 | |
| 517 #define JRT_BLOCK \ | |
| 518 { \ | |
| 519 ThreadInVMfromJava __tiv(thread); \ | |
| 520 Thread* THREAD = thread; \ | |
| 521 debug_only(VMEntryWrapper __vew;) | |
| 522 | |
| 523 #define JRT_BLOCK_END } | |
| 524 | |
| 525 #define JRT_END } | |
| 526 | |
| 527 // Definitions for JNI | |
| 528 | |
| 529 #define JNI_ENTRY(result_type, header) \ | |
| 530 JNI_ENTRY_NO_PRESERVE(result_type, header) \ | |
| 531 WeakPreserveExceptionMark __wem(thread); | |
| 532 | |
| 533 #define JNI_ENTRY_NO_PRESERVE(result_type, header) \ | |
| 534 extern "C" { \ | |
| 535 result_type JNICALL header { \ | |
| 536 JavaThread* thread=JavaThread::thread_from_jni_environment(env); \ | |
| 537 assert( !VerifyJNIEnvThread || (thread == Thread::current()), "JNIEnv is only valid in same thread"); \ | |
| 538 ThreadInVMfromNative __tiv(thread); \ | |
| 539 debug_only(VMNativeEntryWrapper __vew;) \ | |
| 540 __ENTRY(result_type, header, thread) | |
| 541 | |
| 542 | |
| 543 // Ensure that the VMNativeEntryWrapper constructor, which can cause | |
| 544 // a GC, is called outside the NoHandleMark (set via __QUICK_ENTRY). | |
| 545 #define JNI_QUICK_ENTRY(result_type, header) \ | |
| 546 extern "C" { \ | |
| 547 result_type JNICALL header { \ | |
| 548 JavaThread* thread=JavaThread::thread_from_jni_environment(env); \ | |
| 549 assert( !VerifyJNIEnvThread || (thread == Thread::current()), "JNIEnv is only valid in same thread"); \ | |
| 550 ThreadInVMfromNative __tiv(thread); \ | |
| 551 debug_only(VMNativeEntryWrapper __vew;) \ | |
| 552 __QUICK_ENTRY(result_type, header, thread) | |
| 553 | |
| 554 | |
| 555 #define JNI_LEAF(result_type, header) \ | |
| 556 extern "C" { \ | |
| 557 result_type JNICALL header { \ | |
| 558 JavaThread* thread=JavaThread::thread_from_jni_environment(env); \ | |
| 559 assert( !VerifyJNIEnvThread || (thread == Thread::current()), "JNIEnv is only valid in same thread"); \ | |
| 560 __LEAF(result_type, header) | |
| 561 | |
| 562 | |
| 563 // Close the routine and the extern "C" | |
| 564 #define JNI_END } } | |
| 565 | |
| 566 | |
| 567 | |
| 568 // Definitions for JVM | |
| 569 | |
| 570 #define JVM_ENTRY(result_type, header) \ | |
| 571 extern "C" { \ | |
| 572 result_type JNICALL header { \ | |
| 573 JavaThread* thread=JavaThread::thread_from_jni_environment(env); \ | |
| 574 ThreadInVMfromNative __tiv(thread); \ | |
| 575 debug_only(VMNativeEntryWrapper __vew;) \ | |
| 576 __ENTRY(result_type, header, thread) | |
| 577 | |
| 578 | |
| 579 #define JVM_ENTRY_NO_ENV(result_type, header) \ | |
| 580 extern "C" { \ | |
| 581 result_type JNICALL header { \ | |
| 582 JavaThread* thread = (JavaThread*)ThreadLocalStorage::thread(); \ | |
| 583 ThreadInVMfromNative __tiv(thread); \ | |
| 584 debug_only(VMNativeEntryWrapper __vew;) \ | |
| 585 __ENTRY(result_type, header, thread) | |
| 586 | |
| 587 | |
| 588 #define JVM_QUICK_ENTRY(result_type, header) \ | |
| 589 extern "C" { \ | |
| 590 result_type JNICALL header { \ | |
| 591 JavaThread* thread=JavaThread::thread_from_jni_environment(env); \ | |
| 592 ThreadInVMfromNative __tiv(thread); \ | |
| 593 debug_only(VMNativeEntryWrapper __vew;) \ | |
| 594 __QUICK_ENTRY(result_type, header, thread) | |
| 595 | |
| 596 | |
| 597 #define JVM_LEAF(result_type, header) \ | |
| 598 extern "C" { \ | |
| 599 result_type JNICALL header { \ | |
| 600 VM_Exit::block_if_vm_exited(); \ | |
| 601 __LEAF(result_type, header) | |
| 602 | |
| 603 | |
| 604 #define JVM_END } } | |
| 1972 | 605 |
| 606 #endif // SHARE_VM_RUNTIME_INTERFACESUPPORT_HPP |