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src/share/vm/runtime/interfaceSupport.hpp@ec173c8f3739 (annotated)

src/share/vm/runtime/interfaceSupport.hpp

Thu, 11 Jul 2013 01:11:52 -0700

author
roland
date
Thu, 11 Jul 2013 01:11:52 -0700
changeset 5385
ec173c8f3739
parent 4299
f34d701e952e
child 5614
9758d9f36299
child 6461
bdd155477289
permissions
-rw-r--r--

Merge

duke@435 1 /*
mikael@4153 2 * Copyright (c) 1997, 2012, 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:
duke@435 59 inline void* operator new(size_t size, void* ptr) {
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
never@3156 110 #ifdef TARGET_OS_FAMILY_bsd
never@3156 111 # include "interfaceSupport_bsd.hpp"
never@3156 112 #endif
stefank@2314 113
duke@435 114 };
duke@435 115
duke@435 116
duke@435 117 // Basic class for all thread transition classes.
duke@435 118
duke@435 119 class ThreadStateTransition : public StackObj {
duke@435 120 protected:
duke@435 121 JavaThread* _thread;
duke@435 122 public:
duke@435 123 ThreadStateTransition(JavaThread *thread) {
duke@435 124 _thread = thread;
duke@435 125 assert(thread != NULL && thread->is_Java_thread(), "must be Java thread");
duke@435 126 }
duke@435 127
duke@435 128 // Change threadstate in a manner, so safepoint can detect changes.
duke@435 129 // Time-critical: called on exit from every runtime routine
duke@435 130 static inline void transition(JavaThread *thread, JavaThreadState from, JavaThreadState to) {
duke@435 131 assert(from != _thread_in_Java, "use transition_from_java");
duke@435 132 assert(from != _thread_in_native, "use transition_from_native");
duke@435 133 assert((from & 1) == 0 && (to & 1) == 0, "odd numbers are transitions states");
duke@435 134 assert(thread->thread_state() == from, "coming from wrong thread state");
duke@435 135 // Change to transition state (assumes total store ordering! -Urs)
duke@435 136 thread->set_thread_state((JavaThreadState)(from + 1));
duke@435 137
duke@435 138 // Make sure new state is seen by VM thread
duke@435 139 if (os::is_MP()) {
duke@435 140 if (UseMembar) {
duke@435 141 // Force a fence between the write above and read below
duke@435 142 OrderAccess::fence();
duke@435 143 } else {
duke@435 144 // store to serialize page so VM thread can do pseudo remote membar
duke@435 145 os::write_memory_serialize_page(thread);
duke@435 146 }
duke@435 147 }
duke@435 148
duke@435 149 if (SafepointSynchronize::do_call_back()) {
duke@435 150 SafepointSynchronize::block(thread);
duke@435 151 }
duke@435 152 thread->set_thread_state(to);
duke@435 153
duke@435 154 CHECK_UNHANDLED_OOPS_ONLY(thread->clear_unhandled_oops();)
duke@435 155 }
duke@435 156
duke@435 157 // transition_and_fence must be used on any thread state transition
duke@435 158 // where there might not be a Java call stub on the stack, in
duke@435 159 // particular on Windows where the Structured Exception Handler is
duke@435 160 // set up in the call stub. os::write_memory_serialize_page() can
duke@435 161 // fault and we can't recover from it on Windows without a SEH in
duke@435 162 // place.
duke@435 163 static inline void transition_and_fence(JavaThread *thread, JavaThreadState from, JavaThreadState to) {
duke@435 164 assert(thread->thread_state() == from, "coming from wrong thread state");
duke@435 165 assert((from & 1) == 0 && (to & 1) == 0, "odd numbers are transitions states");
duke@435 166 // Change to transition state (assumes total store ordering! -Urs)
duke@435 167 thread->set_thread_state((JavaThreadState)(from + 1));
duke@435 168
duke@435 169 // Make sure new state is seen by VM thread
duke@435 170 if (os::is_MP()) {
duke@435 171 if (UseMembar) {
duke@435 172 // Force a fence between the write above and read below
duke@435 173 OrderAccess::fence();
duke@435 174 } else {
duke@435 175 // Must use this rather than serialization page in particular on Windows
duke@435 176 InterfaceSupport::serialize_memory(thread);
duke@435 177 }
duke@435 178 }
duke@435 179
duke@435 180 if (SafepointSynchronize::do_call_back()) {
duke@435 181 SafepointSynchronize::block(thread);
duke@435 182 }
duke@435 183 thread->set_thread_state(to);
duke@435 184
duke@435 185 CHECK_UNHANDLED_OOPS_ONLY(thread->clear_unhandled_oops();)
duke@435 186 }
duke@435 187
duke@435 188 // Same as above, but assumes from = _thread_in_Java. This is simpler, since we
duke@435 189 // never block on entry to the VM. This will break the code, since e.g. preserve arguments
duke@435 190 // have not been setup.
duke@435 191 static inline void transition_from_java(JavaThread *thread, JavaThreadState to) {
duke@435 192 assert(thread->thread_state() == _thread_in_Java, "coming from wrong thread state");
duke@435 193 thread->set_thread_state(to);
duke@435 194 }
duke@435 195
duke@435 196 static inline void transition_from_native(JavaThread *thread, JavaThreadState to) {
duke@435 197 assert((to & 1) == 0, "odd numbers are transitions states");
duke@435 198 assert(thread->thread_state() == _thread_in_native, "coming from wrong thread state");
duke@435 199 // Change to transition state (assumes total store ordering! -Urs)
duke@435 200 thread->set_thread_state(_thread_in_native_trans);
duke@435 201
duke@435 202 // Make sure new state is seen by GC thread
duke@435 203 if (os::is_MP()) {
duke@435 204 if (UseMembar) {
duke@435 205 // Force a fence between the write above and read below
duke@435 206 OrderAccess::fence();
duke@435 207 } else {
duke@435 208 // Must use this rather than serialization page in particular on Windows
duke@435 209 InterfaceSupport::serialize_memory(thread);
duke@435 210 }
duke@435 211 }
duke@435 212
duke@435 213 // We never install asynchronous exceptions when coming (back) in
duke@435 214 // to the runtime from native code because the runtime is not set
duke@435 215 // up to handle exceptions floating around at arbitrary points.
duke@435 216 if (SafepointSynchronize::do_call_back() || thread->is_suspend_after_native()) {
duke@435 217 JavaThread::check_safepoint_and_suspend_for_native_trans(thread);
duke@435 218
duke@435 219 // Clear unhandled oops anywhere where we could block, even if we don't.
duke@435 220 CHECK_UNHANDLED_OOPS_ONLY(thread->clear_unhandled_oops();)
duke@435 221 }
duke@435 222
duke@435 223 thread->set_thread_state(to);
duke@435 224 }
duke@435 225 protected:
duke@435 226 void trans(JavaThreadState from, JavaThreadState to) { transition(_thread, from, to); }
duke@435 227 void trans_from_java(JavaThreadState to) { transition_from_java(_thread, to); }
duke@435 228 void trans_from_native(JavaThreadState to) { transition_from_native(_thread, to); }
duke@435 229 void trans_and_fence(JavaThreadState from, JavaThreadState to) { transition_and_fence(_thread, from, to); }
duke@435 230 };
duke@435 231
duke@435 232
duke@435 233 class ThreadInVMfromJava : public ThreadStateTransition {
duke@435 234 public:
duke@435 235 ThreadInVMfromJava(JavaThread* thread) : ThreadStateTransition(thread) {
duke@435 236 trans_from_java(_thread_in_vm);
duke@435 237 }
duke@435 238 ~ThreadInVMfromJava() {
duke@435 239 trans(_thread_in_vm, _thread_in_Java);
duke@435 240 // Check for pending. async. exceptions or suspends.
duke@435 241 if (_thread->has_special_runtime_exit_condition()) _thread->handle_special_runtime_exit_condition();
duke@435 242 }
duke@435 243 };
duke@435 244
duke@435 245
duke@435 246 class ThreadInVMfromUnknown {
duke@435 247 private:
duke@435 248 JavaThread* _thread;
duke@435 249 public:
duke@435 250 ThreadInVMfromUnknown() : _thread(NULL) {
duke@435 251 Thread* t = Thread::current();
duke@435 252 if (t->is_Java_thread()) {
duke@435 253 JavaThread* t2 = (JavaThread*) t;
duke@435 254 if (t2->thread_state() == _thread_in_native) {
duke@435 255 _thread = t2;
duke@435 256 ThreadStateTransition::transition_from_native(t2, _thread_in_vm);
duke@435 257 // Used to have a HandleMarkCleaner but that is dangerous as
duke@435 258 // it could free a handle in our (indirect, nested) caller.
duke@435 259 // We expect any handles will be short lived and figure we
duke@435 260 // don't need an actual HandleMark.
duke@435 261 }
duke@435 262 }
duke@435 263 }
duke@435 264 ~ThreadInVMfromUnknown() {
duke@435 265 if (_thread) {
duke@435 266 ThreadStateTransition::transition_and_fence(_thread, _thread_in_vm, _thread_in_native);
duke@435 267 }
duke@435 268 }
duke@435 269 };
duke@435 270
duke@435 271
duke@435 272 class ThreadInVMfromNative : public ThreadStateTransition {
duke@435 273 public:
duke@435 274 ThreadInVMfromNative(JavaThread* thread) : ThreadStateTransition(thread) {
duke@435 275 trans_from_native(_thread_in_vm);
duke@435 276 }
duke@435 277 ~ThreadInVMfromNative() {
duke@435 278 trans_and_fence(_thread_in_vm, _thread_in_native);
duke@435 279 }
duke@435 280 };
duke@435 281
duke@435 282
duke@435 283 class ThreadToNativeFromVM : public ThreadStateTransition {
duke@435 284 public:
duke@435 285 ThreadToNativeFromVM(JavaThread *thread) : ThreadStateTransition(thread) {
duke@435 286 // We are leaving the VM at this point and going directly to native code.
duke@435 287 // Block, if we are in the middle of a safepoint synchronization.
duke@435 288 assert(!thread->owns_locks(), "must release all locks when leaving VM");
duke@435 289 thread->frame_anchor()->make_walkable(thread);
duke@435 290 trans_and_fence(_thread_in_vm, _thread_in_native);
duke@435 291 // Check for pending. async. exceptions or suspends.
duke@435 292 if (_thread->has_special_runtime_exit_condition()) _thread->handle_special_runtime_exit_condition(false);
duke@435 293 }
duke@435 294
duke@435 295 ~ThreadToNativeFromVM() {
duke@435 296 trans_from_native(_thread_in_vm);
duke@435 297 // We don't need to clear_walkable because it will happen automagically when we return to java
duke@435 298 }
duke@435 299 };
duke@435 300
duke@435 301
duke@435 302 class ThreadBlockInVM : public ThreadStateTransition {
duke@435 303 public:
duke@435 304 ThreadBlockInVM(JavaThread *thread)
duke@435 305 : ThreadStateTransition(thread) {
duke@435 306 // Once we are blocked vm expects stack to be walkable
duke@435 307 thread->frame_anchor()->make_walkable(thread);
duke@435 308 trans_and_fence(_thread_in_vm, _thread_blocked);
duke@435 309 }
duke@435 310 ~ThreadBlockInVM() {
duke@435 311 trans_and_fence(_thread_blocked, _thread_in_vm);
duke@435 312 // We don't need to clear_walkable because it will happen automagically when we return to java
duke@435 313 }
duke@435 314 };
duke@435 315
duke@435 316
duke@435 317 // This special transition class is only used to prevent asynchronous exceptions
duke@435 318 // from being installed on vm exit in situations where we can't tolerate them.
duke@435 319 // See bugs: 4324348, 4854693, 4998314, 5040492, 5050705.
duke@435 320 class ThreadInVMfromJavaNoAsyncException : public ThreadStateTransition {
duke@435 321 public:
duke@435 322 ThreadInVMfromJavaNoAsyncException(JavaThread* thread) : ThreadStateTransition(thread) {
duke@435 323 trans_from_java(_thread_in_vm);
duke@435 324 }
duke@435 325 ~ThreadInVMfromJavaNoAsyncException() {
duke@435 326 trans(_thread_in_vm, _thread_in_Java);
duke@435 327 // NOTE: We do not check for pending. async. exceptions.
duke@435 328 // If we did and moved the pending async exception over into the
duke@435 329 // pending exception field, we would need to deopt (currently C2
duke@435 330 // only). However, to do so would require that we transition back
duke@435 331 // to the _thread_in_vm state. Instead we postpone the handling of
duke@435 332 // the async exception.
duke@435 333
duke@435 334 // Check for pending. suspends only.
duke@435 335 if (_thread->has_special_runtime_exit_condition())
duke@435 336 _thread->handle_special_runtime_exit_condition(false);
duke@435 337 }
duke@435 338 };
duke@435 339
duke@435 340 // Debug class instantiated in JRT_ENTRY and ITR_ENTRY macro.
duke@435 341 // Can be used to verify properties on enter/exit of the VM.
duke@435 342
duke@435 343 #ifdef ASSERT
duke@435 344 class VMEntryWrapper {
duke@435 345 public:
duke@435 346 VMEntryWrapper() {
duke@435 347 if (VerifyLastFrame) {
duke@435 348 InterfaceSupport::verify_last_frame();
duke@435 349 }
duke@435 350 }
duke@435 351
duke@435 352 ~VMEntryWrapper() {
duke@435 353 InterfaceSupport::check_gc_alot();
duke@435 354 if (WalkStackALot) {
duke@435 355 InterfaceSupport::walk_stack();
duke@435 356 }
duke@435 357 #ifdef ENABLE_ZAP_DEAD_LOCALS
duke@435 358 if (ZapDeadLocalsOld) {
duke@435 359 InterfaceSupport::zap_dead_locals_old();
duke@435 360 }
duke@435 361 #endif
duke@435 362 #ifdef COMPILER2
duke@435 363 // This option is not used by Compiler 1
duke@435 364 if (StressDerivedPointers) {
duke@435 365 InterfaceSupport::stress_derived_pointers();
duke@435 366 }
duke@435 367 #endif
duke@435 368 if (DeoptimizeALot || DeoptimizeRandom) {
duke@435 369 InterfaceSupport::deoptimizeAll();
duke@435 370 }
duke@435 371 if (ZombieALot) {
duke@435 372 InterfaceSupport::zombieAll();
duke@435 373 }
coleenp@2497 374 if (UnlinkSymbolsALot) {
coleenp@2497 375 InterfaceSupport::unlinkSymbols();
coleenp@2497 376 }
duke@435 377 // do verification AFTER potential deoptimization
duke@435 378 if (VerifyStack) {
duke@435 379 InterfaceSupport::verify_stack();
duke@435 380 }
duke@435 381
duke@435 382 }
duke@435 383 };
duke@435 384
duke@435 385
duke@435 386 class VMNativeEntryWrapper {
duke@435 387 public:
duke@435 388 VMNativeEntryWrapper() {
duke@435 389 if (GCALotAtAllSafepoints) InterfaceSupport::check_gc_alot();
duke@435 390 }
duke@435 391
duke@435 392 ~VMNativeEntryWrapper() {
duke@435 393 if (GCALotAtAllSafepoints) InterfaceSupport::check_gc_alot();
duke@435 394 }
duke@435 395 };
duke@435 396
duke@435 397 #endif
duke@435 398
duke@435 399
duke@435 400 // VM-internal runtime interface support
duke@435 401
duke@435 402 #ifdef ASSERT
duke@435 403
duke@435 404 class RuntimeHistogramElement : public HistogramElement {
duke@435 405 public:
duke@435 406 RuntimeHistogramElement(const char* name);
duke@435 407 };
duke@435 408
duke@435 409 #define TRACE_CALL(result_type, header) \
duke@435 410 InterfaceSupport::_number_of_calls++; \
duke@435 411 if (TraceRuntimeCalls) \
duke@435 412 InterfaceSupport::trace(#result_type, #header); \
duke@435 413 if (CountRuntimeCalls) { \
duke@435 414 static RuntimeHistogramElement* e = new RuntimeHistogramElement(#header); \
duke@435 415 if (e != NULL) e->increment_count(); \
duke@435 416 }
duke@435 417 #else
duke@435 418 #define TRACE_CALL(result_type, header) \
duke@435 419 /* do nothing */
duke@435 420 #endif
duke@435 421
duke@435 422
duke@435 423 // LEAF routines do not lock, GC or throw exceptions
duke@435 424
never@3241 425 #define VM_LEAF_BASE(result_type, header) \
duke@435 426 TRACE_CALL(result_type, header) \
duke@435 427 debug_only(NoHandleMark __hm;) \
roland@3606 428 os::verify_stack_alignment(); \
duke@435 429 /* begin of body */
duke@435 430
duke@435 431
duke@435 432 // ENTRY routines may lock, GC and throw exceptions
duke@435 433
never@3241 434 #define VM_ENTRY_BASE(result_type, header, thread) \
duke@435 435 TRACE_CALL(result_type, header) \
duke@435 436 HandleMarkCleaner __hm(thread); \
duke@435 437 Thread* THREAD = thread; \
roland@3606 438 os::verify_stack_alignment(); \
duke@435 439 /* begin of body */
duke@435 440
duke@435 441
duke@435 442 // QUICK_ENTRY routines behave like ENTRY but without a handle mark
duke@435 443
never@3241 444 #define VM_QUICK_ENTRY_BASE(result_type, header, thread) \
duke@435 445 TRACE_CALL(result_type, header) \
duke@435 446 debug_only(NoHandleMark __hm;) \
duke@435 447 Thread* THREAD = thread; \
roland@3606 448 os::verify_stack_alignment(); \
duke@435 449 /* begin of body */
duke@435 450
duke@435 451
duke@435 452 // Definitions for IRT (Interpreter Runtime)
duke@435 453 // (thread is an argument passed in to all these routines)
duke@435 454
duke@435 455 #define IRT_ENTRY(result_type, header) \
duke@435 456 result_type header { \
duke@435 457 ThreadInVMfromJava __tiv(thread); \
never@3241 458 VM_ENTRY_BASE(result_type, header, thread) \
duke@435 459 debug_only(VMEntryWrapper __vew;)
duke@435 460
duke@435 461
duke@435 462 #define IRT_LEAF(result_type, header) \
duke@435 463 result_type header { \
never@3241 464 VM_LEAF_BASE(result_type, header) \
duke@435 465 debug_only(No_Safepoint_Verifier __nspv(true);)
duke@435 466
duke@435 467
duke@435 468 #define IRT_ENTRY_NO_ASYNC(result_type, header) \
duke@435 469 result_type header { \
duke@435 470 ThreadInVMfromJavaNoAsyncException __tiv(thread); \
never@3241 471 VM_ENTRY_BASE(result_type, header, thread) \
duke@435 472 debug_only(VMEntryWrapper __vew;)
duke@435 473
duke@435 474 // Another special case for nmethod_entry_point so the nmethod that the
duke@435 475 // interpreter is about to branch to doesn't get flushed before as we
duke@435 476 // branch to it's interpreter_entry_point. Skip stress testing here too.
duke@435 477 // Also we don't allow async exceptions because it is just too painful.
duke@435 478 #define IRT_ENTRY_FOR_NMETHOD(result_type, header) \
duke@435 479 result_type header { \
duke@435 480 nmethodLocker _nmlock(nm); \
duke@435 481 ThreadInVMfromJavaNoAsyncException __tiv(thread); \
never@3241 482 VM_ENTRY_BASE(result_type, header, thread)
duke@435 483
duke@435 484 #define IRT_END }
duke@435 485
duke@435 486
duke@435 487 // Definitions for JRT (Java (Compiler/Shared) Runtime)
duke@435 488
duke@435 489 #define JRT_ENTRY(result_type, header) \
duke@435 490 result_type header { \
duke@435 491 ThreadInVMfromJava __tiv(thread); \
never@3241 492 VM_ENTRY_BASE(result_type, header, thread) \
duke@435 493 debug_only(VMEntryWrapper __vew;)
duke@435 494
duke@435 495
duke@435 496 #define JRT_LEAF(result_type, header) \
duke@435 497 result_type header { \
never@3241 498 VM_LEAF_BASE(result_type, header) \
duke@435 499 debug_only(JRT_Leaf_Verifier __jlv;)
duke@435 500
duke@435 501
duke@435 502 #define JRT_ENTRY_NO_ASYNC(result_type, header) \
duke@435 503 result_type header { \
duke@435 504 ThreadInVMfromJavaNoAsyncException __tiv(thread); \
never@3241 505 VM_ENTRY_BASE(result_type, header, thread) \
duke@435 506 debug_only(VMEntryWrapper __vew;)
duke@435 507
duke@435 508 // Same as JRT Entry but allows for return value after the safepoint
duke@435 509 // to get back into Java from the VM
duke@435 510 #define JRT_BLOCK_ENTRY(result_type, header) \
duke@435 511 result_type header { \
duke@435 512 TRACE_CALL(result_type, header) \
duke@435 513 HandleMarkCleaner __hm(thread);
duke@435 514
duke@435 515 #define JRT_BLOCK \
duke@435 516 { \
duke@435 517 ThreadInVMfromJava __tiv(thread); \
duke@435 518 Thread* THREAD = thread; \
duke@435 519 debug_only(VMEntryWrapper __vew;)
duke@435 520
duke@435 521 #define JRT_BLOCK_END }
duke@435 522
duke@435 523 #define JRT_END }
duke@435 524
duke@435 525 // Definitions for JNI
duke@435 526
duke@435 527 #define JNI_ENTRY(result_type, header) \
duke@435 528 JNI_ENTRY_NO_PRESERVE(result_type, header) \
duke@435 529 WeakPreserveExceptionMark __wem(thread);
duke@435 530
duke@435 531 #define JNI_ENTRY_NO_PRESERVE(result_type, header) \
duke@435 532 extern "C" { \
duke@435 533 result_type JNICALL header { \
duke@435 534 JavaThread* thread=JavaThread::thread_from_jni_environment(env); \
duke@435 535 assert( !VerifyJNIEnvThread || (thread == Thread::current()), "JNIEnv is only valid in same thread"); \
duke@435 536 ThreadInVMfromNative __tiv(thread); \
duke@435 537 debug_only(VMNativeEntryWrapper __vew;) \
never@3241 538 VM_ENTRY_BASE(result_type, header, thread)
duke@435 539
duke@435 540
duke@435 541 // Ensure that the VMNativeEntryWrapper constructor, which can cause
never@3241 542 // a GC, is called outside the NoHandleMark (set via VM_QUICK_ENTRY_BASE).
duke@435 543 #define JNI_QUICK_ENTRY(result_type, header) \
duke@435 544 extern "C" { \
duke@435 545 result_type JNICALL header { \
duke@435 546 JavaThread* thread=JavaThread::thread_from_jni_environment(env); \
duke@435 547 assert( !VerifyJNIEnvThread || (thread == Thread::current()), "JNIEnv is only valid in same thread"); \
duke@435 548 ThreadInVMfromNative __tiv(thread); \
duke@435 549 debug_only(VMNativeEntryWrapper __vew;) \
never@3241 550 VM_QUICK_ENTRY_BASE(result_type, header, thread)
duke@435 551
duke@435 552
duke@435 553 #define JNI_LEAF(result_type, header) \
duke@435 554 extern "C" { \
duke@435 555 result_type JNICALL header { \
duke@435 556 JavaThread* thread=JavaThread::thread_from_jni_environment(env); \
duke@435 557 assert( !VerifyJNIEnvThread || (thread == Thread::current()), "JNIEnv is only valid in same thread"); \
never@3241 558 VM_LEAF_BASE(result_type, header)
duke@435 559
duke@435 560
duke@435 561 // Close the routine and the extern "C"
duke@435 562 #define JNI_END } }
duke@435 563
duke@435 564
duke@435 565
duke@435 566 // Definitions for JVM
duke@435 567
duke@435 568 #define JVM_ENTRY(result_type, header) \
duke@435 569 extern "C" { \
duke@435 570 result_type JNICALL header { \
duke@435 571 JavaThread* thread=JavaThread::thread_from_jni_environment(env); \
duke@435 572 ThreadInVMfromNative __tiv(thread); \
duke@435 573 debug_only(VMNativeEntryWrapper __vew;) \
never@3241 574 VM_ENTRY_BASE(result_type, header, thread)
duke@435 575
duke@435 576
duke@435 577 #define JVM_ENTRY_NO_ENV(result_type, header) \
duke@435 578 extern "C" { \
duke@435 579 result_type JNICALL header { \
duke@435 580 JavaThread* thread = (JavaThread*)ThreadLocalStorage::thread(); \
duke@435 581 ThreadInVMfromNative __tiv(thread); \
duke@435 582 debug_only(VMNativeEntryWrapper __vew;) \
never@3241 583 VM_ENTRY_BASE(result_type, header, thread)
duke@435 584
duke@435 585
duke@435 586 #define JVM_QUICK_ENTRY(result_type, header) \
duke@435 587 extern "C" { \
duke@435 588 result_type JNICALL header { \
duke@435 589 JavaThread* thread=JavaThread::thread_from_jni_environment(env); \
duke@435 590 ThreadInVMfromNative __tiv(thread); \
duke@435 591 debug_only(VMNativeEntryWrapper __vew;) \
never@3241 592 VM_QUICK_ENTRY_BASE(result_type, header, thread)
duke@435 593
duke@435 594
duke@435 595 #define JVM_LEAF(result_type, header) \
duke@435 596 extern "C" { \
duke@435 597 result_type JNICALL header { \
duke@435 598 VM_Exit::block_if_vm_exited(); \
never@3241 599 VM_LEAF_BASE(result_type, header)
duke@435 600
duke@435 601
duke@435 602 #define JVM_END } }
stefank@2314 603
stefank@2314 604 #endif // SHARE_VM_RUNTIME_INTERFACESUPPORT_HPP

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