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1 /* | 1 /* |
2 * Copyright (C) 2013 Google Inc. All rights reserved. | 2 * Copyright (C) 2013 Google Inc. All rights reserved. |
3 * | 3 * |
4 * Redistribution and use in source and binary forms, with or without | 4 * Redistribution and use in source and binary forms, with or without |
5 * modification, are permitted provided that the following conditions are | 5 * modification, are permitted provided that the following conditions are |
6 * met: | 6 * met: |
7 * | 7 * |
8 * * Redistributions of source code must retain the above copyright | 8 * * Redistributions of source code must retain the above copyright |
9 * notice, this list of conditions and the following disclaimer. | 9 * notice, this list of conditions and the following disclaimer. |
10 * * Redistributions in binary form must reproduce the above | 10 * * Redistributions in binary form must reproduce the above |
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151 } | 151 } |
152 ~SweepForbiddenScope() { | 152 ~SweepForbiddenScope() { |
153 ASSERT(m_state->m_sweepForbidden); | 153 ASSERT(m_state->m_sweepForbidden); |
154 m_state->m_sweepForbidden = false; | 154 m_state->m_sweepForbidden = false; |
155 } | 155 } |
156 | 156 |
157 private: | 157 private: |
158 ThreadState* m_state; | 158 ThreadState* m_state; |
159 }; | 159 }; |
160 | 160 |
161 void lockThreadAttachMutex(); | |
162 void unlockThreadAttachMutex(); | |
163 | |
164 static void attachMainThread(); | 161 static void attachMainThread(); |
165 | 162 |
166 // Associate ThreadState object with the current thread. After this | 163 // Associate ThreadState object with the current thread. After this |
167 // call thread can start using the garbage collected heap infrastructure. | 164 // call thread can start using the garbage collected heap infrastructure. |
168 // It also has to periodically check for safepoints. | 165 // It also has to periodically check for safepoints. |
169 static void attachCurrentThread(); | 166 static void attachCurrentThread(); |
170 | 167 |
171 // Disassociate attached ThreadState from the current thread. The thread | 168 // Disassociate attached ThreadState from the current thread. The thread |
172 // can no longer use the garbage collected heap after this call. | 169 // can no longer use the garbage collected heap after this call. |
173 static void detachCurrentThread(); | 170 static void detachCurrentThread(); |
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606 | 603 |
607 // We can't create a static member of type ThreadState here | 604 // We can't create a static member of type ThreadState here |
608 // because it will introduce global constructor and destructor. | 605 // because it will introduce global constructor and destructor. |
609 // We would like to manage lifetime of the ThreadState attached | 606 // We would like to manage lifetime of the ThreadState attached |
610 // to the main thread explicitly instead and still use normal | 607 // to the main thread explicitly instead and still use normal |
611 // constructor and destructor for the ThreadState class. | 608 // constructor and destructor for the ThreadState class. |
612 // For this we reserve static storage for the main ThreadState | 609 // For this we reserve static storage for the main ThreadState |
613 // and lazily construct ThreadState in it using placement new. | 610 // and lazily construct ThreadState in it using placement new. |
614 static uint8_t s_mainThreadStateStorage[]; | 611 static uint8_t s_mainThreadStateStorage[]; |
615 | 612 |
616 ThreadHeap* m_heap; | 613 std::unique_ptr<ThreadHeap> m_heap; |
617 ThreadIdentifier m_thread; | 614 ThreadIdentifier m_thread; |
618 std::unique_ptr<PersistentRegion> m_persistentRegion; | 615 std::unique_ptr<PersistentRegion> m_persistentRegion; |
619 BlinkGC::StackState m_stackState; | 616 BlinkGC::StackState m_stackState; |
620 intptr_t* m_startOfStack; | 617 intptr_t* m_startOfStack; |
621 intptr_t* m_endOfStack; | 618 intptr_t* m_endOfStack; |
622 | 619 |
623 void* m_safePointScopeMarker; | 620 void* m_safePointScopeMarker; |
624 Vector<Address> m_safePointStackCopy; | 621 Vector<Address> m_safePointStackCopy; |
625 bool m_sweepForbidden; | 622 bool m_sweepForbidden; |
626 size_t m_noAllocationCount; | 623 size_t m_noAllocationCount; |
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700 class ThreadStateFor<AnyThread> { | 697 class ThreadStateFor<AnyThread> { |
701 STATIC_ONLY(ThreadStateFor); | 698 STATIC_ONLY(ThreadStateFor); |
702 | 699 |
703 public: | 700 public: |
704 static ThreadState* state() { return ThreadState::current(); } | 701 static ThreadState* state() { return ThreadState::current(); } |
705 }; | 702 }; |
706 | 703 |
707 } // namespace blink | 704 } // namespace blink |
708 | 705 |
709 #endif // ThreadState_h | 706 #endif // ThreadState_h |
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