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1 // Copyright 2014 the V8 project authors. All rights reserved. | 1 // Copyright 2014 the V8 project authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include "execution.h" | 5 #include "execution.h" |
6 | 6 |
7 #include "bootstrapper.h" | 7 #include "bootstrapper.h" |
8 #include "codegen.h" | 8 #include "codegen.h" |
9 #include "deoptimizer.h" | 9 #include "deoptimizer.h" |
10 #include "isolate-inl.h" | 10 #include "isolate-inl.h" |
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359 | 359 |
360 void StackGuard::ClearInterrupt(int flagbit) { | 360 void StackGuard::ClearInterrupt(int flagbit) { |
361 ExecutionAccess access(isolate_); | 361 ExecutionAccess access(isolate_); |
362 thread_local_.interrupt_flags_ &= ~flagbit; | 362 thread_local_.interrupt_flags_ &= ~flagbit; |
363 if (!should_postpone_interrupts(access) && !has_pending_interrupts(access)) { | 363 if (!should_postpone_interrupts(access) && !has_pending_interrupts(access)) { |
364 reset_limits(access); | 364 reset_limits(access); |
365 } | 365 } |
366 } | 366 } |
367 | 367 |
368 | 368 |
369 bool StackGuard::CheckAndClearInterrupt(InterruptFlag flag, | 369 bool StackGuard::CheckAndClearInterrupt(InterruptFlag flag) { |
370 const ExecutionAccess& lock) { | 370 ExecutionAccess access(isolate_); |
371 int flagbit = 1 << flag; | 371 int flagbit = 1 << flag; |
372 bool result = (thread_local_.interrupt_flags_ & flagbit); | 372 bool result = (thread_local_.interrupt_flags_ & flagbit); |
373 thread_local_.interrupt_flags_ &= ~flagbit; | 373 thread_local_.interrupt_flags_ &= ~flagbit; |
374 if (!should_postpone_interrupts(lock) && !has_pending_interrupts(lock)) { | 374 if (!should_postpone_interrupts(access) && !has_pending_interrupts(access)) { |
375 reset_limits(lock); | 375 reset_limits(access); |
376 } | 376 } |
377 return result; | 377 return result; |
378 } | 378 } |
379 | 379 |
380 | 380 |
381 char* StackGuard::ArchiveStackGuard(char* to) { | 381 char* StackGuard::ArchiveStackGuard(char* to) { |
382 ExecutionAccess access(isolate_); | 382 ExecutionAccess access(isolate_); |
383 MemCopy(to, reinterpret_cast<char*>(&thread_local_), sizeof(ThreadLocal)); | 383 MemCopy(to, reinterpret_cast<char*>(&thread_local_), sizeof(ThreadLocal)); |
384 ThreadLocal blank; | 384 ThreadLocal blank; |
385 | 385 |
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648 Handle<Object> result; | 648 Handle<Object> result; |
649 if (!maybe_result.ToHandle(&result) || !result->IsString()) { | 649 if (!maybe_result.ToHandle(&result) || !result->IsString()) { |
650 return isolate->factory()->empty_string(); | 650 return isolate->factory()->empty_string(); |
651 } | 651 } |
652 | 652 |
653 return Handle<String>::cast(result); | 653 return Handle<String>::cast(result); |
654 } | 654 } |
655 | 655 |
656 | 656 |
657 Object* StackGuard::HandleInterrupts() { | 657 Object* StackGuard::HandleInterrupts() { |
658 bool has_api_interrupt = false; | |
659 { | 658 { |
660 ExecutionAccess access(isolate_); | 659 ExecutionAccess access(isolate_); |
661 if (should_postpone_interrupts(access)) { | 660 if (should_postpone_interrupts(access)) { |
662 return isolate_->heap()->undefined_value(); | 661 return isolate_->heap()->undefined_value(); |
663 } | 662 } |
664 | |
665 if (CheckAndClearInterrupt(GC_REQUEST, access)) { | |
666 isolate_->heap()->CollectAllGarbage(Heap::kNoGCFlags, "GC interrupt"); | |
667 } | |
668 | |
669 if (CheckDebugBreak() || CheckDebugCommand()) { | |
670 isolate_->debug()->DebugBreakHelper(); | |
671 } | |
672 | |
673 if (CheckAndClearInterrupt(TERMINATE_EXECUTION, access)) { | |
674 return isolate_->TerminateExecution(); | |
675 } | |
676 | |
677 if (CheckAndClearInterrupt(DEOPT_MARKED_ALLOCATION_SITES, access)) { | |
678 isolate_->heap()->DeoptMarkedAllocationSites(); | |
679 } | |
680 | |
681 if (CheckAndClearInterrupt(INSTALL_CODE, access)) { | |
682 ASSERT(isolate_->concurrent_recompilation_enabled()); | |
683 isolate_->optimizing_compiler_thread()->InstallOptimizedFunctions(); | |
684 } | |
685 | |
686 has_api_interrupt = CheckAndClearInterrupt(API_INTERRUPT, access); | |
687 | |
688 isolate_->counters()->stack_interrupts()->Increment(); | |
689 isolate_->counters()->runtime_profiler_ticks()->Increment(); | |
690 isolate_->runtime_profiler()->OptimizeNow(); | |
691 } | 663 } |
692 | 664 |
693 if (has_api_interrupt) { | 665 if (CheckAndClearInterrupt(GC_REQUEST)) { |
| 666 isolate_->heap()->CollectAllGarbage(Heap::kNoGCFlags, "GC interrupt"); |
| 667 } |
| 668 |
| 669 if (CheckDebugBreak() || CheckDebugCommand()) { |
| 670 isolate_->debug()->DebugBreakHelper(); |
| 671 } |
| 672 |
| 673 if (CheckAndClearInterrupt(TERMINATE_EXECUTION)) { |
| 674 return isolate_->TerminateExecution(); |
| 675 } |
| 676 |
| 677 if (CheckAndClearInterrupt(DEOPT_MARKED_ALLOCATION_SITES)) { |
| 678 isolate_->heap()->DeoptMarkedAllocationSites(); |
| 679 } |
| 680 |
| 681 if (CheckAndClearInterrupt(INSTALL_CODE)) { |
| 682 ASSERT(isolate_->concurrent_recompilation_enabled()); |
| 683 isolate_->optimizing_compiler_thread()->InstallOptimizedFunctions(); |
| 684 } |
| 685 |
| 686 if (CheckAndClearInterrupt(API_INTERRUPT)) { |
694 // Callback must be invoked outside of ExecusionAccess lock. | 687 // Callback must be invoked outside of ExecusionAccess lock. |
695 isolate_->InvokeApiInterruptCallback(); | 688 isolate_->InvokeApiInterruptCallback(); |
696 } | 689 } |
697 | 690 |
| 691 isolate_->counters()->stack_interrupts()->Increment(); |
| 692 isolate_->counters()->runtime_profiler_ticks()->Increment(); |
| 693 isolate_->runtime_profiler()->OptimizeNow(); |
| 694 |
698 return isolate_->heap()->undefined_value(); | 695 return isolate_->heap()->undefined_value(); |
699 } | 696 } |
700 | 697 |
701 } } // namespace v8::internal | 698 } } // namespace v8::internal |
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