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src/share/vm/runtime/interfaceSupport.hpp@248ff38d2950 (annotated)

src/share/vm/runtime/interfaceSupport.hpp

Fri, 28 Mar 2014 10:13:37 -0700

author
vlivanov
date
Fri, 28 Mar 2014 10:13:37 -0700
changeset 6528
248ff38d2950
parent 6472
2b8e28fdf503
child 6876
710a3c8b516e
child 9562
dee6a1ce4a0c
permissions
-rw-r--r--

8035828: Turn on @Stable support in VM
Reviewed-by: jrose, twisti

duke@435 1 /*
coleenp@5614 2 * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved.
duke@435 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
duke@435 4 *
duke@435 5 * This code is free software; you can redistribute it and/or modify it
duke@435 6 * under the terms of the GNU General Public License version 2 only, as
duke@435 7 * published by the Free Software Foundation.
duke@435 8 *
duke@435 9 * This code is distributed in the hope that it will be useful, but WITHOUT
duke@435 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
duke@435 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
duke@435 12 * version 2 for more details (a copy is included in the LICENSE file that
duke@435 13 * accompanied this code).
duke@435 14 *
duke@435 15 * You should have received a copy of the GNU General Public License version
duke@435 16 * 2 along with this work; if not, write to the Free Software Foundation,
duke@435 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
duke@435 18 *
trims@1907 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
trims@1907 20 * or visit www.oracle.com if you need additional information or have any
trims@1907 21 * questions.
duke@435 22 *
duke@435 23 */
duke@435 24
stefank@2314 25 #ifndef SHARE_VM_RUNTIME_INTERFACESUPPORT_HPP
stefank@2314 26 #define SHARE_VM_RUNTIME_INTERFACESUPPORT_HPP
stefank@2314 27
stefank@2314 28 #include "memory/gcLocker.hpp"
stefank@2314 29 #include "runtime/handles.inline.hpp"
stefank@2314 30 #include "runtime/mutexLocker.hpp"
stefank@2314 31 #include "runtime/orderAccess.hpp"
stefank@2314 32 #include "runtime/os.hpp"
stefank@2314 33 #include "runtime/safepoint.hpp"
stefank@4299 34 #include "runtime/thread.inline.hpp"
stefank@2314 35 #include "runtime/vmThread.hpp"
stefank@2314 36 #include "utilities/globalDefinitions.hpp"
stefank@2314 37 #include "utilities/preserveException.hpp"
stefank@2314 38 #include "utilities/top.hpp"
stefank@2314 39
duke@435 40 // Wrapper for all entry points to the virtual machine.
duke@435 41 // The HandleMarkCleaner is a faster version of HandleMark.
duke@435 42 // It relies on the fact that there is a HandleMark further
duke@435 43 // down the stack (in JavaCalls::call_helper), and just resets
duke@435 44 // to the saved values in that HandleMark.
duke@435 45
duke@435 46 class HandleMarkCleaner: public StackObj {
duke@435 47 private:
duke@435 48 Thread* _thread;
duke@435 49 public:
duke@435 50 HandleMarkCleaner(Thread* thread) {
duke@435 51 _thread = thread;
duke@435 52 _thread->last_handle_mark()->push();
duke@435 53 }
duke@435 54 ~HandleMarkCleaner() {
duke@435 55 _thread->last_handle_mark()->pop_and_restore();
duke@435 56 }
duke@435 57
duke@435 58 private:
coleenp@5614 59 inline void* operator new(size_t size, void* ptr) throw() {
duke@435 60 return ptr;
duke@435 61 }
duke@435 62 };
duke@435 63
never@3241 64 // InterfaceSupport provides functionality used by the VM_LEAF_BASE and
never@3241 65 // VM_ENTRY_BASE macros. These macros are used to guard entry points into
never@3241 66 // the VM and perform checks upon leave of the VM.
duke@435 67
duke@435 68
duke@435 69 class InterfaceSupport: AllStatic {
duke@435 70 # ifdef ASSERT
duke@435 71 public:
duke@435 72 static long _scavenge_alot_counter;
duke@435 73 static long _fullgc_alot_counter;
duke@435 74 static long _number_of_calls;
duke@435 75 static long _fullgc_alot_invocation;
duke@435 76
duke@435 77 // tracing
duke@435 78 static void trace(const char* result_type, const char* header);
duke@435 79
duke@435 80 // Helper methods used to implement +ScavengeALot and +FullGCALot
duke@435 81 static void check_gc_alot() { if (ScavengeALot || FullGCALot) gc_alot(); }
duke@435 82 static void gc_alot();
duke@435 83
duke@435 84 static void walk_stack_from(vframe* start_vf);
duke@435 85 static void walk_stack();
duke@435 86
duke@435 87 # ifdef ENABLE_ZAP_DEAD_LOCALS
duke@435 88 static void zap_dead_locals_old();
duke@435 89 # endif
duke@435 90
duke@435 91 static void zombieAll();
coleenp@2497 92 static void unlinkSymbols();
duke@435 93 static void deoptimizeAll();
duke@435 94 static void stress_derived_pointers();
duke@435 95 static void verify_stack();
duke@435 96 static void verify_last_frame();
duke@435 97 # endif
duke@435 98
duke@435 99 public:
duke@435 100 // OS dependent stuff
stefank@2314 101 #ifdef TARGET_OS_FAMILY_linux
stefank@2314 102 # include "interfaceSupport_linux.hpp"
stefank@2314 103 #endif
stefank@2314 104 #ifdef TARGET_OS_FAMILY_solaris
stefank@2314 105 # include "interfaceSupport_solaris.hpp"
stefank@2314 106 #endif
stefank@2314 107 #ifdef TARGET_OS_FAMILY_windows
stefank@2314 108 # include "interfaceSupport_windows.hpp"
stefank@2314 109 #endif
goetz@6461 110 #ifdef TARGET_OS_FAMILY_aix
goetz@6461 111 # include "interfaceSupport_aix.hpp"
goetz@6461 112 #endif
never@3156 113 #ifdef TARGET_OS_FAMILY_bsd
never@3156 114 # include "interfaceSupport_bsd.hpp"
never@3156 115 #endif
stefank@2314 116
duke@435 117 };
duke@435 118
duke@435 119
duke@435 120 // Basic class for all thread transition classes.
duke@435 121
duke@435 122 class ThreadStateTransition : public StackObj {
duke@435 123 protected:
duke@435 124 JavaThread* _thread;
duke@435 125 public:
duke@435 126 ThreadStateTransition(JavaThread *thread) {
duke@435 127 _thread = thread;
duke@435 128 assert(thread != NULL && thread->is_Java_thread(), "must be Java thread");
duke@435 129 }
duke@435 130
duke@435 131 // Change threadstate in a manner, so safepoint can detect changes.
duke@435 132 // Time-critical: called on exit from every runtime routine
duke@435 133 static inline void transition(JavaThread *thread, JavaThreadState from, JavaThreadState to) {
duke@435 134 assert(from != _thread_in_Java, "use transition_from_java");
duke@435 135 assert(from != _thread_in_native, "use transition_from_native");
duke@435 136 assert((from & 1) == 0 && (to & 1) == 0, "odd numbers are transitions states");
duke@435 137 assert(thread->thread_state() == from, "coming from wrong thread state");
duke@435 138 // Change to transition state (assumes total store ordering! -Urs)
duke@435 139 thread->set_thread_state((JavaThreadState)(from + 1));
duke@435 140
duke@435 141 // Make sure new state is seen by VM thread
duke@435 142 if (os::is_MP()) {
duke@435 143 if (UseMembar) {
duke@435 144 // Force a fence between the write above and read below
duke@435 145 OrderAccess::fence();
duke@435 146 } else {
duke@435 147 // store to serialize page so VM thread can do pseudo remote membar
duke@435 148 os::write_memory_serialize_page(thread);
duke@435 149 }
duke@435 150 }
duke@435 151
duke@435 152 if (SafepointSynchronize::do_call_back()) {
duke@435 153 SafepointSynchronize::block(thread);
duke@435 154 }
duke@435 155 thread->set_thread_state(to);
duke@435 156
duke@435 157 CHECK_UNHANDLED_OOPS_ONLY(thread->clear_unhandled_oops();)
duke@435 158 }
duke@435 159
duke@435 160 // transition_and_fence must be used on any thread state transition
duke@435 161 // where there might not be a Java call stub on the stack, in
duke@435 162 // particular on Windows where the Structured Exception Handler is
duke@435 163 // set up in the call stub. os::write_memory_serialize_page() can
duke@435 164 // fault and we can't recover from it on Windows without a SEH in
duke@435 165 // place.
duke@435 166 static inline void transition_and_fence(JavaThread *thread, JavaThreadState from, JavaThreadState to) {
duke@435 167 assert(thread->thread_state() == from, "coming from wrong thread state");
duke@435 168 assert((from & 1) == 0 && (to & 1) == 0, "odd numbers are transitions states");
duke@435 169 // Change to transition state (assumes total store ordering! -Urs)
duke@435 170 thread->set_thread_state((JavaThreadState)(from + 1));
duke@435 171
duke@435 172 // Make sure new state is seen by VM thread
duke@435 173 if (os::is_MP()) {
duke@435 174 if (UseMembar) {
duke@435 175 // Force a fence between the write above and read below
duke@435 176 OrderAccess::fence();
duke@435 177 } else {
duke@435 178 // Must use this rather than serialization page in particular on Windows
duke@435 179 InterfaceSupport::serialize_memory(thread);
duke@435 180 }
duke@435 181 }
duke@435 182
duke@435 183 if (SafepointSynchronize::do_call_back()) {
duke@435 184 SafepointSynchronize::block(thread);
duke@435 185 }
duke@435 186 thread->set_thread_state(to);
duke@435 187
duke@435 188 CHECK_UNHANDLED_OOPS_ONLY(thread->clear_unhandled_oops();)
duke@435 189 }
duke@435 190
duke@435 191 // Same as above, but assumes from = _thread_in_Java. This is simpler, since we
duke@435 192 // never block on entry to the VM. This will break the code, since e.g. preserve arguments
duke@435 193 // have not been setup.
duke@435 194 static inline void transition_from_java(JavaThread *thread, JavaThreadState to) {
duke@435 195 assert(thread->thread_state() == _thread_in_Java, "coming from wrong thread state");
duke@435 196 thread->set_thread_state(to);
duke@435 197 }
duke@435 198
duke@435 199 static inline void transition_from_native(JavaThread *thread, JavaThreadState to) {
duke@435 200 assert((to & 1) == 0, "odd numbers are transitions states");
duke@435 201 assert(thread->thread_state() == _thread_in_native, "coming from wrong thread state");
duke@435 202 // Change to transition state (assumes total store ordering! -Urs)
duke@435 203 thread->set_thread_state(_thread_in_native_trans);
duke@435 204
duke@435 205 // Make sure new state is seen by GC thread
duke@435 206 if (os::is_MP()) {
duke@435 207 if (UseMembar) {
duke@435 208 // Force a fence between the write above and read below
duke@435 209 OrderAccess::fence();
duke@435 210 } else {
duke@435 211 // Must use this rather than serialization page in particular on Windows
duke@435 212 InterfaceSupport::serialize_memory(thread);
duke@435 213 }
duke@435 214 }
duke@435 215
duke@435 216 // We never install asynchronous exceptions when coming (back) in
duke@435 217 // to the runtime from native code because the runtime is not set
duke@435 218 // up to handle exceptions floating around at arbitrary points.
duke@435 219 if (SafepointSynchronize::do_call_back() || thread->is_suspend_after_native()) {
duke@435 220 JavaThread::check_safepoint_and_suspend_for_native_trans(thread);
duke@435 221
duke@435 222 // Clear unhandled oops anywhere where we could block, even if we don't.
duke@435 223 CHECK_UNHANDLED_OOPS_ONLY(thread->clear_unhandled_oops();)
duke@435 224 }
duke@435 225
duke@435 226 thread->set_thread_state(to);
duke@435 227 }
duke@435 228 protected:
duke@435 229 void trans(JavaThreadState from, JavaThreadState to) { transition(_thread, from, to); }
duke@435 230 void trans_from_java(JavaThreadState to) { transition_from_java(_thread, to); }
duke@435 231 void trans_from_native(JavaThreadState to) { transition_from_native(_thread, to); }
duke@435 232 void trans_and_fence(JavaThreadState from, JavaThreadState to) { transition_and_fence(_thread, from, to); }
duke@435 233 };
duke@435 234
duke@435 235
duke@435 236 class ThreadInVMfromJava : public ThreadStateTransition {
duke@435 237 public:
duke@435 238 ThreadInVMfromJava(JavaThread* thread) : ThreadStateTransition(thread) {
duke@435 239 trans_from_java(_thread_in_vm);
duke@435 240 }
duke@435 241 ~ThreadInVMfromJava() {
duke@435 242 trans(_thread_in_vm, _thread_in_Java);
duke@435 243 // Check for pending. async. exceptions or suspends.
duke@435 244 if (_thread->has_special_runtime_exit_condition()) _thread->handle_special_runtime_exit_condition();
duke@435 245 }
duke@435 246 };
duke@435 247
duke@435 248
duke@435 249 class ThreadInVMfromUnknown {
duke@435 250 private:
duke@435 251 JavaThread* _thread;
duke@435 252 public:
duke@435 253 ThreadInVMfromUnknown() : _thread(NULL) {
duke@435 254 Thread* t = Thread::current();
duke@435 255 if (t->is_Java_thread()) {
duke@435 256 JavaThread* t2 = (JavaThread*) t;
duke@435 257 if (t2->thread_state() == _thread_in_native) {
duke@435 258 _thread = t2;
duke@435 259 ThreadStateTransition::transition_from_native(t2, _thread_in_vm);
duke@435 260 // Used to have a HandleMarkCleaner but that is dangerous as
duke@435 261 // it could free a handle in our (indirect, nested) caller.
duke@435 262 // We expect any handles will be short lived and figure we
duke@435 263 // don't need an actual HandleMark.
duke@435 264 }
duke@435 265 }
duke@435 266 }
duke@435 267 ~ThreadInVMfromUnknown() {
duke@435 268 if (_thread) {
duke@435 269 ThreadStateTransition::transition_and_fence(_thread, _thread_in_vm, _thread_in_native);
duke@435 270 }
duke@435 271 }
duke@435 272 };
duke@435 273
duke@435 274
duke@435 275 class ThreadInVMfromNative : public ThreadStateTransition {
duke@435 276 public:
duke@435 277 ThreadInVMfromNative(JavaThread* thread) : ThreadStateTransition(thread) {
duke@435 278 trans_from_native(_thread_in_vm);
duke@435 279 }
duke@435 280 ~ThreadInVMfromNative() {
duke@435 281 trans_and_fence(_thread_in_vm, _thread_in_native);
duke@435 282 }
duke@435 283 };
duke@435 284
duke@435 285
duke@435 286 class ThreadToNativeFromVM : public ThreadStateTransition {
duke@435 287 public:
duke@435 288 ThreadToNativeFromVM(JavaThread *thread) : ThreadStateTransition(thread) {
duke@435 289 // We are leaving the VM at this point and going directly to native code.
duke@435 290 // Block, if we are in the middle of a safepoint synchronization.
duke@435 291 assert(!thread->owns_locks(), "must release all locks when leaving VM");
duke@435 292 thread->frame_anchor()->make_walkable(thread);
duke@435 293 trans_and_fence(_thread_in_vm, _thread_in_native);
duke@435 294 // Check for pending. async. exceptions or suspends.
duke@435 295 if (_thread->has_special_runtime_exit_condition()) _thread->handle_special_runtime_exit_condition(false);
duke@435 296 }
duke@435 297
duke@435 298 ~ThreadToNativeFromVM() {
duke@435 299 trans_from_native(_thread_in_vm);
duke@435 300 // We don't need to clear_walkable because it will happen automagically when we return to java
duke@435 301 }
duke@435 302 };
duke@435 303
duke@435 304
duke@435 305 class ThreadBlockInVM : public ThreadStateTransition {
duke@435 306 public:
duke@435 307 ThreadBlockInVM(JavaThread *thread)
duke@435 308 : ThreadStateTransition(thread) {
duke@435 309 // Once we are blocked vm expects stack to be walkable
duke@435 310 thread->frame_anchor()->make_walkable(thread);
duke@435 311 trans_and_fence(_thread_in_vm, _thread_blocked);
duke@435 312 }
duke@435 313 ~ThreadBlockInVM() {
duke@435 314 trans_and_fence(_thread_blocked, _thread_in_vm);
duke@435 315 // We don't need to clear_walkable because it will happen automagically when we return to java
duke@435 316 }
duke@435 317 };
duke@435 318
duke@435 319
duke@435 320 // This special transition class is only used to prevent asynchronous exceptions
duke@435 321 // from being installed on vm exit in situations where we can't tolerate them.
duke@435 322 // See bugs: 4324348, 4854693, 4998314, 5040492, 5050705.
duke@435 323 class ThreadInVMfromJavaNoAsyncException : public ThreadStateTransition {
duke@435 324 public:
duke@435 325 ThreadInVMfromJavaNoAsyncException(JavaThread* thread) : ThreadStateTransition(thread) {
duke@435 326 trans_from_java(_thread_in_vm);
duke@435 327 }
duke@435 328 ~ThreadInVMfromJavaNoAsyncException() {
duke@435 329 trans(_thread_in_vm, _thread_in_Java);
duke@435 330 // NOTE: We do not check for pending. async. exceptions.
duke@435 331 // If we did and moved the pending async exception over into the
duke@435 332 // pending exception field, we would need to deopt (currently C2
duke@435 333 // only). However, to do so would require that we transition back
duke@435 334 // to the _thread_in_vm state. Instead we postpone the handling of
duke@435 335 // the async exception.
duke@435 336
duke@435 337 // Check for pending. suspends only.
duke@435 338 if (_thread->has_special_runtime_exit_condition())
duke@435 339 _thread->handle_special_runtime_exit_condition(false);
duke@435 340 }
duke@435 341 };
duke@435 342
duke@435 343 // Debug class instantiated in JRT_ENTRY and ITR_ENTRY macro.
duke@435 344 // Can be used to verify properties on enter/exit of the VM.
duke@435 345
duke@435 346 #ifdef ASSERT
duke@435 347 class VMEntryWrapper {
duke@435 348 public:
duke@435 349 VMEntryWrapper() {
duke@435 350 if (VerifyLastFrame) {
duke@435 351 InterfaceSupport::verify_last_frame();
duke@435 352 }
duke@435 353 }
duke@435 354
duke@435 355 ~VMEntryWrapper() {
duke@435 356 InterfaceSupport::check_gc_alot();
duke@435 357 if (WalkStackALot) {
duke@435 358 InterfaceSupport::walk_stack();
duke@435 359 }
duke@435 360 #ifdef ENABLE_ZAP_DEAD_LOCALS
duke@435 361 if (ZapDeadLocalsOld) {
duke@435 362 InterfaceSupport::zap_dead_locals_old();
duke@435 363 }
duke@435 364 #endif
duke@435 365 #ifdef COMPILER2
duke@435 366 // This option is not used by Compiler 1
duke@435 367 if (StressDerivedPointers) {
duke@435 368 InterfaceSupport::stress_derived_pointers();
duke@435 369 }
duke@435 370 #endif
duke@435 371 if (DeoptimizeALot || DeoptimizeRandom) {
duke@435 372 InterfaceSupport::deoptimizeAll();
duke@435 373 }
duke@435 374 if (ZombieALot) {
duke@435 375 InterfaceSupport::zombieAll();
duke@435 376 }
coleenp@2497 377 if (UnlinkSymbolsALot) {
coleenp@2497 378 InterfaceSupport::unlinkSymbols();
coleenp@2497 379 }
duke@435 380 // do verification AFTER potential deoptimization
duke@435 381 if (VerifyStack) {
duke@435 382 InterfaceSupport::verify_stack();
duke@435 383 }
duke@435 384
duke@435 385 }
duke@435 386 };
duke@435 387
duke@435 388
duke@435 389 class VMNativeEntryWrapper {
duke@435 390 public:
duke@435 391 VMNativeEntryWrapper() {
duke@435 392 if (GCALotAtAllSafepoints) InterfaceSupport::check_gc_alot();
duke@435 393 }
duke@435 394
duke@435 395 ~VMNativeEntryWrapper() {
duke@435 396 if (GCALotAtAllSafepoints) InterfaceSupport::check_gc_alot();
duke@435 397 }
duke@435 398 };
duke@435 399
duke@435 400 #endif
duke@435 401
duke@435 402
duke@435 403 // VM-internal runtime interface support
duke@435 404
duke@435 405 #ifdef ASSERT
duke@435 406
duke@435 407 class RuntimeHistogramElement : public HistogramElement {
duke@435 408 public:
duke@435 409 RuntimeHistogramElement(const char* name);
duke@435 410 };
duke@435 411
duke@435 412 #define TRACE_CALL(result_type, header) \
duke@435 413 InterfaceSupport::_number_of_calls++; \
duke@435 414 if (TraceRuntimeCalls) \
duke@435 415 InterfaceSupport::trace(#result_type, #header); \
duke@435 416 if (CountRuntimeCalls) { \
duke@435 417 static RuntimeHistogramElement* e = new RuntimeHistogramElement(#header); \
duke@435 418 if (e != NULL) e->increment_count(); \
duke@435 419 }
duke@435 420 #else
duke@435 421 #define TRACE_CALL(result_type, header) \
duke@435 422 /* do nothing */
duke@435 423 #endif
duke@435 424
duke@435 425
duke@435 426 // LEAF routines do not lock, GC or throw exceptions
duke@435 427
never@3241 428 #define VM_LEAF_BASE(result_type, header) \
duke@435 429 TRACE_CALL(result_type, header) \
duke@435 430 debug_only(NoHandleMark __hm;) \
roland@3606 431 os::verify_stack_alignment(); \
duke@435 432 /* begin of body */
duke@435 433
duke@435 434
duke@435 435 // ENTRY routines may lock, GC and throw exceptions
duke@435 436
never@3241 437 #define VM_ENTRY_BASE(result_type, header, thread) \
duke@435 438 TRACE_CALL(result_type, header) \
duke@435 439 HandleMarkCleaner __hm(thread); \
duke@435 440 Thread* THREAD = thread; \
roland@3606 441 os::verify_stack_alignment(); \
duke@435 442 /* begin of body */
duke@435 443
duke@435 444
duke@435 445 // QUICK_ENTRY routines behave like ENTRY but without a handle mark
duke@435 446
never@3241 447 #define VM_QUICK_ENTRY_BASE(result_type, header, thread) \
duke@435 448 TRACE_CALL(result_type, header) \
duke@435 449 debug_only(NoHandleMark __hm;) \
duke@435 450 Thread* THREAD = thread; \
roland@3606 451 os::verify_stack_alignment(); \
duke@435 452 /* begin of body */
duke@435 453
duke@435 454
duke@435 455 // Definitions for IRT (Interpreter Runtime)
duke@435 456 // (thread is an argument passed in to all these routines)
duke@435 457
duke@435 458 #define IRT_ENTRY(result_type, header) \
duke@435 459 result_type header { \
duke@435 460 ThreadInVMfromJava __tiv(thread); \
never@3241 461 VM_ENTRY_BASE(result_type, header, thread) \
duke@435 462 debug_only(VMEntryWrapper __vew;)
duke@435 463
duke@435 464
duke@435 465 #define IRT_LEAF(result_type, header) \
duke@435 466 result_type header { \
never@3241 467 VM_LEAF_BASE(result_type, header) \
duke@435 468 debug_only(No_Safepoint_Verifier __nspv(true);)
duke@435 469
duke@435 470
duke@435 471 #define IRT_ENTRY_NO_ASYNC(result_type, header) \
duke@435 472 result_type header { \
duke@435 473 ThreadInVMfromJavaNoAsyncException __tiv(thread); \
never@3241 474 VM_ENTRY_BASE(result_type, header, thread) \
duke@435 475 debug_only(VMEntryWrapper __vew;)
duke@435 476
duke@435 477 #define IRT_END }
duke@435 478
duke@435 479
duke@435 480 // Definitions for JRT (Java (Compiler/Shared) Runtime)
duke@435 481
duke@435 482 #define JRT_ENTRY(result_type, header) \
duke@435 483 result_type header { \
duke@435 484 ThreadInVMfromJava __tiv(thread); \
never@3241 485 VM_ENTRY_BASE(result_type, header, thread) \
duke@435 486 debug_only(VMEntryWrapper __vew;)
duke@435 487
duke@435 488
duke@435 489 #define JRT_LEAF(result_type, header) \
duke@435 490 result_type header { \
never@3241 491 VM_LEAF_BASE(result_type, header) \
duke@435 492 debug_only(JRT_Leaf_Verifier __jlv;)
duke@435 493
duke@435 494
duke@435 495 #define JRT_ENTRY_NO_ASYNC(result_type, header) \
duke@435 496 result_type header { \
duke@435 497 ThreadInVMfromJavaNoAsyncException __tiv(thread); \
never@3241 498 VM_ENTRY_BASE(result_type, header, thread) \
duke@435 499 debug_only(VMEntryWrapper __vew;)
duke@435 500
duke@435 501 // Same as JRT Entry but allows for return value after the safepoint
duke@435 502 // to get back into Java from the VM
duke@435 503 #define JRT_BLOCK_ENTRY(result_type, header) \
duke@435 504 result_type header { \
duke@435 505 TRACE_CALL(result_type, header) \
duke@435 506 HandleMarkCleaner __hm(thread);
duke@435 507
duke@435 508 #define JRT_BLOCK \
duke@435 509 { \
duke@435 510 ThreadInVMfromJava __tiv(thread); \
duke@435 511 Thread* THREAD = thread; \
duke@435 512 debug_only(VMEntryWrapper __vew;)
duke@435 513
duke@435 514 #define JRT_BLOCK_END }
duke@435 515
duke@435 516 #define JRT_END }
duke@435 517
duke@435 518 // Definitions for JNI
duke@435 519
duke@435 520 #define JNI_ENTRY(result_type, header) \
duke@435 521 JNI_ENTRY_NO_PRESERVE(result_type, header) \
duke@435 522 WeakPreserveExceptionMark __wem(thread);
duke@435 523
duke@435 524 #define JNI_ENTRY_NO_PRESERVE(result_type, header) \
duke@435 525 extern "C" { \
duke@435 526 result_type JNICALL header { \
duke@435 527 JavaThread* thread=JavaThread::thread_from_jni_environment(env); \
duke@435 528 assert( !VerifyJNIEnvThread || (thread == Thread::current()), "JNIEnv is only valid in same thread"); \
duke@435 529 ThreadInVMfromNative __tiv(thread); \
duke@435 530 debug_only(VMNativeEntryWrapper __vew;) \
never@3241 531 VM_ENTRY_BASE(result_type, header, thread)
duke@435 532
duke@435 533
duke@435 534 // Ensure that the VMNativeEntryWrapper constructor, which can cause
never@3241 535 // a GC, is called outside the NoHandleMark (set via VM_QUICK_ENTRY_BASE).
duke@435 536 #define JNI_QUICK_ENTRY(result_type, header) \
duke@435 537 extern "C" { \
duke@435 538 result_type JNICALL header { \
duke@435 539 JavaThread* thread=JavaThread::thread_from_jni_environment(env); \
duke@435 540 assert( !VerifyJNIEnvThread || (thread == Thread::current()), "JNIEnv is only valid in same thread"); \
duke@435 541 ThreadInVMfromNative __tiv(thread); \
duke@435 542 debug_only(VMNativeEntryWrapper __vew;) \
never@3241 543 VM_QUICK_ENTRY_BASE(result_type, header, thread)
duke@435 544
duke@435 545
duke@435 546 #define JNI_LEAF(result_type, header) \
duke@435 547 extern "C" { \
duke@435 548 result_type JNICALL header { \
duke@435 549 JavaThread* thread=JavaThread::thread_from_jni_environment(env); \
duke@435 550 assert( !VerifyJNIEnvThread || (thread == Thread::current()), "JNIEnv is only valid in same thread"); \
never@3241 551 VM_LEAF_BASE(result_type, header)
duke@435 552
duke@435 553
duke@435 554 // Close the routine and the extern "C"
duke@435 555 #define JNI_END } }
duke@435 556
duke@435 557
duke@435 558
duke@435 559 // Definitions for JVM
duke@435 560
duke@435 561 #define JVM_ENTRY(result_type, header) \
duke@435 562 extern "C" { \
duke@435 563 result_type JNICALL header { \
duke@435 564 JavaThread* thread=JavaThread::thread_from_jni_environment(env); \
duke@435 565 ThreadInVMfromNative __tiv(thread); \
duke@435 566 debug_only(VMNativeEntryWrapper __vew;) \
never@3241 567 VM_ENTRY_BASE(result_type, header, thread)
duke@435 568
duke@435 569
duke@435 570 #define JVM_ENTRY_NO_ENV(result_type, header) \
duke@435 571 extern "C" { \
duke@435 572 result_type JNICALL header { \
duke@435 573 JavaThread* thread = (JavaThread*)ThreadLocalStorage::thread(); \
duke@435 574 ThreadInVMfromNative __tiv(thread); \
duke@435 575 debug_only(VMNativeEntryWrapper __vew;) \
never@3241 576 VM_ENTRY_BASE(result_type, header, thread)
duke@435 577
duke@435 578
duke@435 579 #define JVM_QUICK_ENTRY(result_type, header) \
duke@435 580 extern "C" { \
duke@435 581 result_type JNICALL header { \
duke@435 582 JavaThread* thread=JavaThread::thread_from_jni_environment(env); \
duke@435 583 ThreadInVMfromNative __tiv(thread); \
duke@435 584 debug_only(VMNativeEntryWrapper __vew;) \
never@3241 585 VM_QUICK_ENTRY_BASE(result_type, header, thread)
duke@435 586
duke@435 587
duke@435 588 #define JVM_LEAF(result_type, header) \
duke@435 589 extern "C" { \
duke@435 590 result_type JNICALL header { \
duke@435 591 VM_Exit::block_if_vm_exited(); \
never@3241 592 VM_LEAF_BASE(result_type, header)
duke@435 593
duke@435 594
duke@435 595 #define JVM_END } }
stefank@2314 596
stefank@2314 597 #endif // SHARE_VM_RUNTIME_INTERFACESUPPORT_HPP

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