Mercurial > hg > graal-compiler
annotate src/share/vm/runtime/interfaceSupport.hpp @ 2125:7246a374a9f2
6458402: 3 jvmti tests fail with CMS and +ExplicitGCInvokesConcurrent
Summary: Make JvmtiGCMark safe to run non-safepoint and instrument CMS
Reviewed-by: ysr, dcubed
| author | kamg |
|---|---|
| date | Mon, 10 Jan 2011 17:14:53 -0500 |
| parents | f95d63e2154a |
| children | 3582bf76420e |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 1972 | 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 #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(); | |
| 100 static void deoptimizeAll(); | |
| 101 static void stress_derived_pointers(); | |
| 102 static void verify_stack(); | |
| 103 static void verify_last_frame(); | |
| 104 # endif | |
| 105 | |
| 106 public: | |
| 107 // OS dependent stuff | |
| 1972 | 108 #ifdef TARGET_OS_FAMILY_linux |
| 109 # include "interfaceSupport_linux.hpp" | |
| 110 #endif | |
| 111 #ifdef TARGET_OS_FAMILY_solaris | |
| 112 # include "interfaceSupport_solaris.hpp" | |
| 113 #endif | |
| 114 #ifdef TARGET_OS_FAMILY_windows | |
| 115 # include "interfaceSupport_windows.hpp" | |
| 116 #endif | |
| 117 | |
| 0 | 118 }; |
| 119 | |
| 120 | |
| 121 // Basic class for all thread transition classes. | |
| 122 | |
| 123 class ThreadStateTransition : public StackObj { | |
| 124 protected: | |
| 125 JavaThread* _thread; | |
| 126 public: | |
| 127 ThreadStateTransition(JavaThread *thread) { | |
| 128 _thread = thread; | |
| 129 assert(thread != NULL && thread->is_Java_thread(), "must be Java thread"); | |
| 130 } | |
| 131 | |
| 132 // Change threadstate in a manner, so safepoint can detect changes. | |
| 133 // Time-critical: called on exit from every runtime routine | |
| 134 static inline void transition(JavaThread *thread, JavaThreadState from, JavaThreadState to) { | |
| 135 assert(from != _thread_in_Java, "use transition_from_java"); | |
| 136 assert(from != _thread_in_native, "use transition_from_native"); | |
| 137 assert((from & 1) == 0 && (to & 1) == 0, "odd numbers are transitions states"); | |
| 138 assert(thread->thread_state() == from, "coming from wrong thread state"); | |
| 139 // Change to transition state (assumes total store ordering! -Urs) | |
| 140 thread->set_thread_state((JavaThreadState)(from + 1)); | |
| 141 | |
| 142 // Make sure new state is seen by VM thread | |
| 143 if (os::is_MP()) { | |
| 144 if (UseMembar) { | |
| 145 // Force a fence between the write above and read below | |
| 146 OrderAccess::fence(); | |
| 147 } else { | |
| 148 // store to serialize page so VM thread can do pseudo remote membar | |
| 149 os::write_memory_serialize_page(thread); | |
| 150 } | |
| 151 } | |
| 152 | |
| 153 if (SafepointSynchronize::do_call_back()) { | |
| 154 SafepointSynchronize::block(thread); | |
| 155 } | |
| 156 thread->set_thread_state(to); | |
| 157 | |
| 158 CHECK_UNHANDLED_OOPS_ONLY(thread->clear_unhandled_oops();) | |
| 159 } | |
| 160 | |
| 161 // transition_and_fence must be used on any thread state transition | |
| 162 // where there might not be a Java call stub on the stack, in | |
| 163 // particular on Windows where the Structured Exception Handler is | |
| 164 // set up in the call stub. os::write_memory_serialize_page() can | |
| 165 // fault and we can't recover from it on Windows without a SEH in | |
| 166 // place. | |
| 167 static inline void transition_and_fence(JavaThread *thread, JavaThreadState from, JavaThreadState to) { | |
| 168 assert(thread->thread_state() == from, "coming from wrong thread state"); | |
| 169 assert((from & 1) == 0 && (to & 1) == 0, "odd numbers are transitions states"); | |
| 170 // Change to transition state (assumes total store ordering! -Urs) | |
| 171 thread->set_thread_state((JavaThreadState)(from + 1)); | |
| 172 | |
| 173 // Make sure new state is seen by VM thread | |
| 174 if (os::is_MP()) { | |
| 175 if (UseMembar) { | |
| 176 // Force a fence between the write above and read below | |
| 177 OrderAccess::fence(); | |
| 178 } else { | |
| 179 // Must use this rather than serialization page in particular on Windows | |
| 180 InterfaceSupport::serialize_memory(thread); | |
| 181 } | |
| 182 } | |
| 183 | |
| 184 if (SafepointSynchronize::do_call_back()) { | |
| 185 SafepointSynchronize::block(thread); | |
| 186 } | |
| 187 thread->set_thread_state(to); | |
| 188 | |
| 189 CHECK_UNHANDLED_OOPS_ONLY(thread->clear_unhandled_oops();) | |
| 190 } | |
| 191 | |
| 192 // Same as above, but assumes from = _thread_in_Java. This is simpler, since we | |
| 193 // never block on entry to the VM. This will break the code, since e.g. preserve arguments | |
| 194 // have not been setup. | |
| 195 static inline void transition_from_java(JavaThread *thread, JavaThreadState to) { | |
| 196 assert(thread->thread_state() == _thread_in_Java, "coming from wrong thread state"); | |
| 197 thread->set_thread_state(to); | |
| 198 } | |
| 199 | |
| 200 static inline void transition_from_native(JavaThread *thread, JavaThreadState to) { | |
| 201 assert((to & 1) == 0, "odd numbers are transitions states"); | |
| 202 assert(thread->thread_state() == _thread_in_native, "coming from wrong thread state"); | |
| 203 // Change to transition state (assumes total store ordering! -Urs) | |
| 204 thread->set_thread_state(_thread_in_native_trans); | |
| 205 | |
| 206 // Make sure new state is seen by GC thread | |
| 207 if (os::is_MP()) { | |
| 208 if (UseMembar) { | |
| 209 // Force a fence between the write above and read below | |
| 210 OrderAccess::fence(); | |
| 211 } else { | |
| 212 // Must use this rather than serialization page in particular on Windows | |
| 213 InterfaceSupport::serialize_memory(thread); | |
| 214 } | |
| 215 } | |
| 216 | |
| 217 // We never install asynchronous exceptions when coming (back) in | |
| 218 // to the runtime from native code because the runtime is not set | |
| 219 // up to handle exceptions floating around at arbitrary points. | |
| 220 if (SafepointSynchronize::do_call_back() || thread->is_suspend_after_native()) { | |
| 221 JavaThread::check_safepoint_and_suspend_for_native_trans(thread); | |
| 222 | |
| 223 // Clear unhandled oops anywhere where we could block, even if we don't. | |
| 224 CHECK_UNHANDLED_OOPS_ONLY(thread->clear_unhandled_oops();) | |
| 225 } | |
| 226 | |
| 227 thread->set_thread_state(to); | |
| 228 } | |
| 229 protected: | |
| 230 void trans(JavaThreadState from, JavaThreadState to) { transition(_thread, from, to); } | |
| 231 void trans_from_java(JavaThreadState to) { transition_from_java(_thread, to); } | |
| 232 void trans_from_native(JavaThreadState to) { transition_from_native(_thread, to); } | |
| 233 void trans_and_fence(JavaThreadState from, JavaThreadState to) { transition_and_fence(_thread, from, to); } | |
| 234 }; | |
| 235 | |
| 236 | |
| 237 class ThreadInVMfromJava : public ThreadStateTransition { | |
| 238 public: | |
| 239 ThreadInVMfromJava(JavaThread* thread) : ThreadStateTransition(thread) { | |
| 240 trans_from_java(_thread_in_vm); | |
| 241 } | |
| 242 ~ThreadInVMfromJava() { | |
| 243 trans(_thread_in_vm, _thread_in_Java); | |
| 244 // Check for pending. async. exceptions or suspends. | |
| 245 if (_thread->has_special_runtime_exit_condition()) _thread->handle_special_runtime_exit_condition(); | |
| 246 } | |
| 247 }; | |
| 248 | |
| 249 | |
| 250 class ThreadInVMfromUnknown { | |
| 251 private: | |
| 252 JavaThread* _thread; | |
| 253 public: | |
| 254 ThreadInVMfromUnknown() : _thread(NULL) { | |
| 255 Thread* t = Thread::current(); | |
| 256 if (t->is_Java_thread()) { | |
| 257 JavaThread* t2 = (JavaThread*) t; | |
| 258 if (t2->thread_state() == _thread_in_native) { | |
| 259 _thread = t2; | |
| 260 ThreadStateTransition::transition_from_native(t2, _thread_in_vm); | |
| 261 // Used to have a HandleMarkCleaner but that is dangerous as | |
| 262 // it could free a handle in our (indirect, nested) caller. | |
| 263 // We expect any handles will be short lived and figure we | |
| 264 // don't need an actual HandleMark. | |
| 265 } | |
| 266 } | |
| 267 } | |
| 268 ~ThreadInVMfromUnknown() { | |
| 269 if (_thread) { | |
| 270 ThreadStateTransition::transition_and_fence(_thread, _thread_in_vm, _thread_in_native); | |
| 271 } | |
| 272 } | |
| 273 }; | |
| 274 | |
| 275 | |
| 276 class ThreadInVMfromNative : public ThreadStateTransition { | |
| 277 public: | |
| 278 ThreadInVMfromNative(JavaThread* thread) : ThreadStateTransition(thread) { | |
| 279 trans_from_native(_thread_in_vm); | |
| 280 } | |
| 281 ~ThreadInVMfromNative() { | |
| 282 trans_and_fence(_thread_in_vm, _thread_in_native); | |
| 283 } | |
| 284 }; | |
| 285 | |
| 286 | |
| 287 class ThreadToNativeFromVM : public ThreadStateTransition { | |
| 288 public: | |
| 289 ThreadToNativeFromVM(JavaThread *thread) : ThreadStateTransition(thread) { | |
| 290 // We are leaving the VM at this point and going directly to native code. | |
| 291 // Block, if we are in the middle of a safepoint synchronization. | |
| 292 assert(!thread->owns_locks(), "must release all locks when leaving VM"); | |
| 293 thread->frame_anchor()->make_walkable(thread); | |
| 294 trans_and_fence(_thread_in_vm, _thread_in_native); | |
| 295 // Check for pending. async. exceptions or suspends. | |
| 296 if (_thread->has_special_runtime_exit_condition()) _thread->handle_special_runtime_exit_condition(false); | |
| 297 } | |
| 298 | |
| 299 ~ThreadToNativeFromVM() { | |
| 300 trans_from_native(_thread_in_vm); | |
| 301 // We don't need to clear_walkable because it will happen automagically when we return to java | |
| 302 } | |
| 303 }; | |
| 304 | |
| 305 | |
| 306 class ThreadBlockInVM : public ThreadStateTransition { | |
| 307 public: | |
| 308 ThreadBlockInVM(JavaThread *thread) | |
| 309 : ThreadStateTransition(thread) { | |
| 310 // Once we are blocked vm expects stack to be walkable | |
| 311 thread->frame_anchor()->make_walkable(thread); | |
| 312 trans_and_fence(_thread_in_vm, _thread_blocked); | |
| 313 } | |
| 314 ~ThreadBlockInVM() { | |
| 315 trans_and_fence(_thread_blocked, _thread_in_vm); | |
| 316 // We don't need to clear_walkable because it will happen automagically when we return to java | |
| 317 } | |
| 318 }; | |
| 319 | |
| 320 | |
| 321 // This special transition class is only used to prevent asynchronous exceptions | |
| 322 // from being installed on vm exit in situations where we can't tolerate them. | |
| 323 // See bugs: 4324348, 4854693, 4998314, 5040492, 5050705. | |
| 324 class ThreadInVMfromJavaNoAsyncException : public ThreadStateTransition { | |
| 325 public: | |
| 326 ThreadInVMfromJavaNoAsyncException(JavaThread* thread) : ThreadStateTransition(thread) { | |
| 327 trans_from_java(_thread_in_vm); | |
| 328 } | |
| 329 ~ThreadInVMfromJavaNoAsyncException() { | |
| 330 trans(_thread_in_vm, _thread_in_Java); | |
| 331 // NOTE: We do not check for pending. async. exceptions. | |
| 332 // If we did and moved the pending async exception over into the | |
| 333 // pending exception field, we would need to deopt (currently C2 | |
| 334 // only). However, to do so would require that we transition back | |
| 335 // to the _thread_in_vm state. Instead we postpone the handling of | |
| 336 // the async exception. | |
| 337 | |
| 338 // Check for pending. suspends only. | |
| 339 if (_thread->has_special_runtime_exit_condition()) | |
| 340 _thread->handle_special_runtime_exit_condition(false); | |
| 341 } | |
| 342 }; | |
| 343 | |
| 344 // Debug class instantiated in JRT_ENTRY and ITR_ENTRY macro. | |
| 345 // Can be used to verify properties on enter/exit of the VM. | |
| 346 | |
| 347 #ifdef ASSERT | |
| 348 class VMEntryWrapper { | |
| 349 public: | |
| 350 VMEntryWrapper() { | |
| 351 if (VerifyLastFrame) { | |
| 352 InterfaceSupport::verify_last_frame(); | |
| 353 } | |
| 354 } | |
| 355 | |
| 356 ~VMEntryWrapper() { | |
| 357 InterfaceSupport::check_gc_alot(); | |
| 358 if (WalkStackALot) { | |
| 359 InterfaceSupport::walk_stack(); | |
| 360 } | |
| 361 #ifdef ENABLE_ZAP_DEAD_LOCALS | |
| 362 if (ZapDeadLocalsOld) { | |
| 363 InterfaceSupport::zap_dead_locals_old(); | |
| 364 } | |
| 365 #endif | |
| 366 #ifdef COMPILER2 | |
| 367 // This option is not used by Compiler 1 | |
| 368 if (StressDerivedPointers) { | |
| 369 InterfaceSupport::stress_derived_pointers(); | |
| 370 } | |
| 371 #endif | |
| 372 if (DeoptimizeALot || DeoptimizeRandom) { | |
| 373 InterfaceSupport::deoptimizeAll(); | |
| 374 } | |
| 375 if (ZombieALot) { | |
| 376 InterfaceSupport::zombieAll(); | |
| 377 } | |
| 378 // do verification AFTER potential deoptimization | |
| 379 if (VerifyStack) { | |
| 380 InterfaceSupport::verify_stack(); | |
| 381 } | |
| 382 | |
| 383 } | |
| 384 }; | |
| 385 | |
| 386 | |
| 387 class VMNativeEntryWrapper { | |
| 388 public: | |
| 389 VMNativeEntryWrapper() { | |
| 390 if (GCALotAtAllSafepoints) InterfaceSupport::check_gc_alot(); | |
| 391 } | |
| 392 | |
| 393 ~VMNativeEntryWrapper() { | |
| 394 if (GCALotAtAllSafepoints) InterfaceSupport::check_gc_alot(); | |
| 395 } | |
| 396 }; | |
| 397 | |
| 398 #endif | |
| 399 | |
| 400 | |
| 401 // VM-internal runtime interface support | |
| 402 | |
| 403 #ifdef ASSERT | |
| 404 | |
| 405 class RuntimeHistogramElement : public HistogramElement { | |
| 406 public: | |
| 407 RuntimeHistogramElement(const char* name); | |
| 408 }; | |
| 409 | |
| 410 #define TRACE_CALL(result_type, header) \ | |
| 411 InterfaceSupport::_number_of_calls++; \ | |
| 412 if (TraceRuntimeCalls) \ | |
| 413 InterfaceSupport::trace(#result_type, #header); \ | |
| 414 if (CountRuntimeCalls) { \ | |
| 415 static RuntimeHistogramElement* e = new RuntimeHistogramElement(#header); \ | |
| 416 if (e != NULL) e->increment_count(); \ | |
| 417 } | |
| 418 #else | |
| 419 #define TRACE_CALL(result_type, header) \ | |
| 420 /* do nothing */ | |
| 421 #endif | |
| 422 | |
| 423 | |
| 424 // LEAF routines do not lock, GC or throw exceptions | |
| 425 | |
| 426 #define __LEAF(result_type, header) \ | |
| 427 TRACE_CALL(result_type, header) \ | |
| 428 debug_only(NoHandleMark __hm;) \ | |
| 429 /* begin of body */ | |
| 430 | |
| 431 | |
| 432 // ENTRY routines may lock, GC and throw exceptions | |
| 433 | |
| 434 #define __ENTRY(result_type, header, thread) \ | |
| 435 TRACE_CALL(result_type, header) \ | |
| 436 HandleMarkCleaner __hm(thread); \ | |
| 437 Thread* THREAD = thread; \ | |
| 438 /* begin of body */ | |
| 439 | |
| 440 | |
| 441 // QUICK_ENTRY routines behave like ENTRY but without a handle mark | |
| 442 | |
| 443 #define __QUICK_ENTRY(result_type, header, thread) \ | |
| 444 TRACE_CALL(result_type, header) \ | |
| 445 debug_only(NoHandleMark __hm;) \ | |
| 446 Thread* THREAD = thread; \ | |
| 447 /* begin of body */ | |
| 448 | |
| 449 | |
| 450 // Definitions for IRT (Interpreter Runtime) | |
| 451 // (thread is an argument passed in to all these routines) | |
| 452 | |
| 453 #define IRT_ENTRY(result_type, header) \ | |
| 454 result_type header { \ | |
| 455 ThreadInVMfromJava __tiv(thread); \ | |
| 456 __ENTRY(result_type, header, thread) \ | |
| 457 debug_only(VMEntryWrapper __vew;) | |
| 458 | |
| 459 | |
| 460 #define IRT_LEAF(result_type, header) \ | |
| 461 result_type header { \ | |
| 462 __LEAF(result_type, header) \ | |
| 463 debug_only(No_Safepoint_Verifier __nspv(true);) | |
| 464 | |
| 465 | |
| 466 #define IRT_ENTRY_NO_ASYNC(result_type, header) \ | |
| 467 result_type header { \ | |
| 468 ThreadInVMfromJavaNoAsyncException __tiv(thread); \ | |
| 469 __ENTRY(result_type, header, thread) \ | |
| 470 debug_only(VMEntryWrapper __vew;) | |
| 471 | |
| 472 // Another special case for nmethod_entry_point so the nmethod that the | |
| 473 // interpreter is about to branch to doesn't get flushed before as we | |
| 474 // branch to it's interpreter_entry_point. Skip stress testing here too. | |
| 475 // Also we don't allow async exceptions because it is just too painful. | |
| 476 #define IRT_ENTRY_FOR_NMETHOD(result_type, header) \ | |
| 477 result_type header { \ | |
| 478 nmethodLocker _nmlock(nm); \ | |
| 479 ThreadInVMfromJavaNoAsyncException __tiv(thread); \ | |
| 480 __ENTRY(result_type, header, thread) | |
| 481 | |
| 482 #define IRT_END } | |
| 483 | |
| 484 | |
| 485 // Definitions for JRT (Java (Compiler/Shared) Runtime) | |
| 486 | |
| 487 #define JRT_ENTRY(result_type, header) \ | |
| 488 result_type header { \ | |
| 489 ThreadInVMfromJava __tiv(thread); \ | |
| 490 __ENTRY(result_type, header, thread) \ | |
| 491 debug_only(VMEntryWrapper __vew;) | |
| 492 | |
| 493 | |
| 494 #define JRT_LEAF(result_type, header) \ | |
| 495 result_type header { \ | |
| 496 __LEAF(result_type, header) \ | |
| 497 debug_only(JRT_Leaf_Verifier __jlv;) | |
| 498 | |
| 499 | |
| 500 #define JRT_ENTRY_NO_ASYNC(result_type, header) \ | |
| 501 result_type header { \ | |
| 502 ThreadInVMfromJavaNoAsyncException __tiv(thread); \ | |
| 503 __ENTRY(result_type, header, thread) \ | |
| 504 debug_only(VMEntryWrapper __vew;) | |
| 505 | |
| 506 // Same as JRT Entry but allows for return value after the safepoint | |
| 507 // to get back into Java from the VM | |
| 508 #define JRT_BLOCK_ENTRY(result_type, header) \ | |
| 509 result_type header { \ | |
| 510 TRACE_CALL(result_type, header) \ | |
| 511 HandleMarkCleaner __hm(thread); | |
| 512 | |
| 513 #define JRT_BLOCK \ | |
| 514 { \ | |
| 515 ThreadInVMfromJava __tiv(thread); \ | |
| 516 Thread* THREAD = thread; \ | |
| 517 debug_only(VMEntryWrapper __vew;) | |
| 518 | |
| 519 #define JRT_BLOCK_END } | |
| 520 | |
| 521 #define JRT_END } | |
| 522 | |
| 523 // Definitions for JNI | |
| 524 | |
| 525 #define JNI_ENTRY(result_type, header) \ | |
| 526 JNI_ENTRY_NO_PRESERVE(result_type, header) \ | |
| 527 WeakPreserveExceptionMark __wem(thread); | |
| 528 | |
| 529 #define JNI_ENTRY_NO_PRESERVE(result_type, header) \ | |
| 530 extern "C" { \ | |
| 531 result_type JNICALL header { \ | |
| 532 JavaThread* thread=JavaThread::thread_from_jni_environment(env); \ | |
| 533 assert( !VerifyJNIEnvThread || (thread == Thread::current()), "JNIEnv is only valid in same thread"); \ | |
| 534 ThreadInVMfromNative __tiv(thread); \ | |
| 535 debug_only(VMNativeEntryWrapper __vew;) \ | |
| 536 __ENTRY(result_type, header, thread) | |
| 537 | |
| 538 | |
| 539 // Ensure that the VMNativeEntryWrapper constructor, which can cause | |
| 540 // a GC, is called outside the NoHandleMark (set via __QUICK_ENTRY). | |
| 541 #define JNI_QUICK_ENTRY(result_type, header) \ | |
| 542 extern "C" { \ | |
| 543 result_type JNICALL header { \ | |
| 544 JavaThread* thread=JavaThread::thread_from_jni_environment(env); \ | |
| 545 assert( !VerifyJNIEnvThread || (thread == Thread::current()), "JNIEnv is only valid in same thread"); \ | |
| 546 ThreadInVMfromNative __tiv(thread); \ | |
| 547 debug_only(VMNativeEntryWrapper __vew;) \ | |
| 548 __QUICK_ENTRY(result_type, header, thread) | |
| 549 | |
| 550 | |
| 551 #define JNI_LEAF(result_type, header) \ | |
| 552 extern "C" { \ | |
| 553 result_type JNICALL header { \ | |
| 554 JavaThread* thread=JavaThread::thread_from_jni_environment(env); \ | |
| 555 assert( !VerifyJNIEnvThread || (thread == Thread::current()), "JNIEnv is only valid in same thread"); \ | |
| 556 __LEAF(result_type, header) | |
| 557 | |
| 558 | |
| 559 // Close the routine and the extern "C" | |
| 560 #define JNI_END } } | |
| 561 | |
| 562 | |
| 563 | |
| 564 // Definitions for JVM | |
| 565 | |
| 566 #define JVM_ENTRY(result_type, header) \ | |
| 567 extern "C" { \ | |
| 568 result_type JNICALL header { \ | |
| 569 JavaThread* thread=JavaThread::thread_from_jni_environment(env); \ | |
| 570 ThreadInVMfromNative __tiv(thread); \ | |
| 571 debug_only(VMNativeEntryWrapper __vew;) \ | |
| 572 __ENTRY(result_type, header, thread) | |
| 573 | |
| 574 | |
| 575 #define JVM_ENTRY_NO_ENV(result_type, header) \ | |
| 576 extern "C" { \ | |
| 577 result_type JNICALL header { \ | |
| 578 JavaThread* thread = (JavaThread*)ThreadLocalStorage::thread(); \ | |
| 579 ThreadInVMfromNative __tiv(thread); \ | |
| 580 debug_only(VMNativeEntryWrapper __vew;) \ | |
| 581 __ENTRY(result_type, header, thread) | |
| 582 | |
| 583 | |
| 584 #define JVM_QUICK_ENTRY(result_type, header) \ | |
| 585 extern "C" { \ | |
| 586 result_type JNICALL header { \ | |
| 587 JavaThread* thread=JavaThread::thread_from_jni_environment(env); \ | |
| 588 ThreadInVMfromNative __tiv(thread); \ | |
| 589 debug_only(VMNativeEntryWrapper __vew;) \ | |
| 590 __QUICK_ENTRY(result_type, header, thread) | |
| 591 | |
| 592 | |
| 593 #define JVM_LEAF(result_type, header) \ | |
| 594 extern "C" { \ | |
| 595 result_type JNICALL header { \ | |
| 596 VM_Exit::block_if_vm_exited(); \ | |
| 597 __LEAF(result_type, header) | |
| 598 | |
| 599 | |
| 600 #define JVM_END } } | |
| 1972 | 601 |
| 602 #endif // SHARE_VM_RUNTIME_INTERFACESUPPORT_HPP |