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1 // Copyright 2012 the V8 project authors. All rights reserved. | 1 // Copyright 2012 the V8 project authors. All rights reserved. |
2 // Redistribution and use in source and binary forms, with or without | 2 // Redistribution and use in source and binary forms, with or without |
3 // modification, are permitted provided that the following conditions are | 3 // modification, are permitted provided that the following conditions are |
4 // met: | 4 // met: |
5 // | 5 // |
6 // * Redistributions of source code must retain the above copyright | 6 // * Redistributions of source code must retain the above copyright |
7 // notice, this list of conditions and the following disclaimer. | 7 // notice, this list of conditions and the following disclaimer. |
8 // * Redistributions in binary form must reproduce the above | 8 // * Redistributions in binary form must reproduce the above |
9 // copyright notice, this list of conditions and the following | 9 // copyright notice, this list of conditions and the following |
10 // disclaimer in the documentation and/or other materials provided | 10 // disclaimer in the documentation and/or other materials provided |
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1067 void CollectAllAvailableGarbage(const char* gc_reason = NULL); | 1067 void CollectAllAvailableGarbage(const char* gc_reason = NULL); |
1068 | 1068 |
1069 // Check whether the heap is currently iterable. | 1069 // Check whether the heap is currently iterable. |
1070 bool IsHeapIterable(); | 1070 bool IsHeapIterable(); |
1071 | 1071 |
1072 // Ensure that we have swept all spaces in such a way that we can iterate | 1072 // Ensure that we have swept all spaces in such a way that we can iterate |
1073 // over all objects. May cause a GC. | 1073 // over all objects. May cause a GC. |
1074 void EnsureHeapIsIterable(); | 1074 void EnsureHeapIsIterable(); |
1075 | 1075 |
1076 // Notify the heap that a context has been disposed. | 1076 // Notify the heap that a context has been disposed. |
1077 int NotifyContextDisposed() { | 1077 int NotifyContextDisposed() { return ++contexts_disposed_; } |
1078 flush_monomorphic_ics_ = true; | |
1079 return ++contexts_disposed_; | |
1080 } | |
1081 | 1078 |
1082 // Utility to invoke the scavenger. This is needed in test code to | 1079 // Utility to invoke the scavenger. This is needed in test code to |
1083 // ensure correct callback for weak global handles. | 1080 // ensure correct callback for weak global handles. |
1084 void PerformScavenge(); | 1081 void PerformScavenge(); |
1085 | 1082 |
1086 inline void increment_scan_on_scavenge_pages() { | 1083 inline void increment_scan_on_scavenge_pages() { |
1087 scan_on_scavenge_pages_++; | 1084 scan_on_scavenge_pages_++; |
1088 if (FLAG_gc_verbose) { | 1085 if (FLAG_gc_verbose) { |
1089 PrintF("Scan-on-scavenge pages: %d\n", scan_on_scavenge_pages_); | 1086 PrintF("Scan-on-scavenge pages: %d\n", scan_on_scavenge_pages_); |
1090 } | 1087 } |
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1600 // Global inline caching age: it is incremented on some GCs after context | 1597 // Global inline caching age: it is incremented on some GCs after context |
1601 // disposal. We use it to flush inline caches. | 1598 // disposal. We use it to flush inline caches. |
1602 int global_ic_age() { | 1599 int global_ic_age() { |
1603 return global_ic_age_; | 1600 return global_ic_age_; |
1604 } | 1601 } |
1605 | 1602 |
1606 void AgeInlineCaches() { | 1603 void AgeInlineCaches() { |
1607 global_ic_age_ = (global_ic_age_ + 1) & SharedFunctionInfo::ICAgeBits::kMax; | 1604 global_ic_age_ = (global_ic_age_ + 1) & SharedFunctionInfo::ICAgeBits::kMax; |
1608 } | 1605 } |
1609 | 1606 |
1610 bool flush_monomorphic_ics() { return flush_monomorphic_ics_; } | |
1611 | |
1612 intptr_t amount_of_external_allocated_memory() { | 1607 intptr_t amount_of_external_allocated_memory() { |
1613 return amount_of_external_allocated_memory_; | 1608 return amount_of_external_allocated_memory_; |
1614 } | 1609 } |
1615 | 1610 |
1616 // ObjectStats are kept in two arrays, counts and sizes. Related stats are | 1611 // ObjectStats are kept in two arrays, counts and sizes. Related stats are |
1617 // stored in a contiguous linear buffer. Stats groups are stored one after | 1612 // stored in a contiguous linear buffer. Stats groups are stored one after |
1618 // another. | 1613 // another. |
1619 enum { | 1614 enum { |
1620 FIRST_CODE_KIND_SUB_TYPE = LAST_TYPE + 1, | 1615 FIRST_CODE_KIND_SUB_TYPE = LAST_TYPE + 1, |
1621 FIRST_FIXED_ARRAY_SUB_TYPE = | 1616 FIRST_FIXED_ARRAY_SUB_TYPE = |
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1687 int sweep_generation_; | 1682 int sweep_generation_; |
1688 | 1683 |
1689 int always_allocate_scope_depth_; | 1684 int always_allocate_scope_depth_; |
1690 int linear_allocation_scope_depth_; | 1685 int linear_allocation_scope_depth_; |
1691 | 1686 |
1692 // For keeping track of context disposals. | 1687 // For keeping track of context disposals. |
1693 int contexts_disposed_; | 1688 int contexts_disposed_; |
1694 | 1689 |
1695 int global_ic_age_; | 1690 int global_ic_age_; |
1696 | 1691 |
1697 bool flush_monomorphic_ics_; | |
1698 | |
1699 int scan_on_scavenge_pages_; | 1692 int scan_on_scavenge_pages_; |
1700 | 1693 |
1701 #if defined(V8_TARGET_ARCH_X64) | 1694 #if defined(V8_TARGET_ARCH_X64) |
1702 static const int kMaxObjectSizeInNewSpace = 1024*KB; | 1695 static const int kMaxObjectSizeInNewSpace = 1024*KB; |
1703 #else | 1696 #else |
1704 static const int kMaxObjectSizeInNewSpace = 512*KB; | 1697 static const int kMaxObjectSizeInNewSpace = 512*KB; |
1705 #endif | 1698 #endif |
1706 | 1699 |
1707 NewSpace new_space_; | 1700 NewSpace new_space_; |
1708 OldSpace* old_pointer_space_; | 1701 OldSpace* old_pointer_space_; |
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2786 AssertNoAllocation no_alloc; // i.e. no gc allowed. | 2779 AssertNoAllocation no_alloc; // i.e. no gc allowed. |
2787 | 2780 |
2788 private: | 2781 private: |
2789 DISALLOW_IMPLICIT_CONSTRUCTORS(PathTracer); | 2782 DISALLOW_IMPLICIT_CONSTRUCTORS(PathTracer); |
2790 }; | 2783 }; |
2791 #endif // DEBUG || LIVE_OBJECT_LIST | 2784 #endif // DEBUG || LIVE_OBJECT_LIST |
2792 | 2785 |
2793 } } // namespace v8::internal | 2786 } } // namespace v8::internal |
2794 | 2787 |
2795 #endif // V8_HEAP_H_ | 2788 #endif // V8_HEAP_H_ |
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