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path: root/deps/v8/src/heap/mark-compact.cc
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Diffstat (limited to 'deps/v8/src/heap/mark-compact.cc')
-rw-r--r--deps/v8/src/heap/mark-compact.cc68
1 files changed, 40 insertions, 28 deletions
diff --git a/deps/v8/src/heap/mark-compact.cc b/deps/v8/src/heap/mark-compact.cc
index 7a87adb5f6f..a7e1c93e1f4 100644
--- a/deps/v8/src/heap/mark-compact.cc
+++ b/deps/v8/src/heap/mark-compact.cc
@@ -20,6 +20,7 @@
#include "src/heap/incremental-marking-inl.h"
#include "src/heap/invalidated-slots-inl.h"
#include "src/heap/item-parallel-job.h"
+#include "src/heap/large-spaces.h"
#include "src/heap/local-allocator-inl.h"
#include "src/heap/mark-compact-inl.h"
#include "src/heap/marking-visitor-inl.h"
@@ -29,6 +30,7 @@
#include "src/heap/object-stats.h"
#include "src/heap/objects-visiting-inl.h"
#include "src/heap/read-only-heap.h"
+#include "src/heap/read-only-spaces.h"
#include "src/heap/spaces-inl.h"
#include "src/heap/sweeper.h"
#include "src/heap/worklist.h"
@@ -96,7 +98,7 @@ class MarkingVerifier : public ObjectVisitor, public RootVisitor {
VerifyRootPointers(start, end);
}
- void VerifyRoots(VisitMode mode);
+ void VerifyRoots();
void VerifyMarkingOnPage(const Page* page, Address start, Address end);
void VerifyMarking(NewSpace* new_space);
void VerifyMarking(PagedSpace* paged_space);
@@ -105,8 +107,8 @@ class MarkingVerifier : public ObjectVisitor, public RootVisitor {
Heap* heap_;
};
-void MarkingVerifier::VerifyRoots(VisitMode mode) {
- heap_->IterateStrongRoots(this, mode);
+void MarkingVerifier::VerifyRoots() {
+ heap_->IterateRoots(this, base::EnumSet<SkipRoot>{SkipRoot::kWeak});
}
void MarkingVerifier::VerifyMarkingOnPage(const Page* page, Address start,
@@ -177,7 +179,7 @@ class FullMarkingVerifier : public MarkingVerifier {
heap->mark_compact_collector()->non_atomic_marking_state()) {}
void Run() override {
- VerifyRoots(VISIT_ONLY_STRONG);
+ VerifyRoots();
VerifyMarking(heap_->new_space());
VerifyMarking(heap_->new_lo_space());
VerifyMarking(heap_->old_space());
@@ -273,7 +275,7 @@ class EvacuationVerifier : public ObjectVisitor, public RootVisitor {
virtual void VerifyPointers(MaybeObjectSlot start, MaybeObjectSlot end) = 0;
virtual void VerifyRootPointers(FullObjectSlot start, FullObjectSlot end) = 0;
- void VerifyRoots(VisitMode mode);
+ void VerifyRoots();
void VerifyEvacuationOnPage(Address start, Address end);
void VerifyEvacuation(NewSpace* new_space);
void VerifyEvacuation(PagedSpace* paged_space);
@@ -281,8 +283,8 @@ class EvacuationVerifier : public ObjectVisitor, public RootVisitor {
Heap* heap_;
};
-void EvacuationVerifier::VerifyRoots(VisitMode mode) {
- heap_->IterateStrongRoots(this, mode);
+void EvacuationVerifier::VerifyRoots() {
+ heap_->IterateRoots(this, base::EnumSet<SkipRoot>{SkipRoot::kWeak});
}
void EvacuationVerifier::VerifyEvacuationOnPage(Address start, Address end) {
@@ -323,7 +325,7 @@ class FullEvacuationVerifier : public EvacuationVerifier {
explicit FullEvacuationVerifier(Heap* heap) : EvacuationVerifier(heap) {}
void Run() override {
- VerifyRoots(VISIT_ALL);
+ VerifyRoots();
VerifyEvacuation(heap_->new_space());
VerifyEvacuation(heap_->old_space());
VerifyEvacuation(heap_->code_space());
@@ -1323,7 +1325,7 @@ class EvacuateVisitorBase : public HeapObjectVisitor {
src.set_map_word(MapWord::FromForwardingAddress(dst));
}
- EvacuateVisitorBase(Heap* heap, LocalAllocator* local_allocator,
+ EvacuateVisitorBase(Heap* heap, EvacuationAllocator* local_allocator,
RecordMigratedSlotVisitor* record_visitor)
: heap_(heap),
local_allocator_(local_allocator),
@@ -1382,7 +1384,7 @@ class EvacuateVisitorBase : public HeapObjectVisitor {
#endif // VERIFY_HEAP
Heap* heap_;
- LocalAllocator* local_allocator_;
+ EvacuationAllocator* local_allocator_;
RecordMigratedSlotVisitor* record_visitor_;
std::vector<MigrationObserver*> observers_;
MigrateFunction migration_function_;
@@ -1391,7 +1393,7 @@ class EvacuateVisitorBase : public HeapObjectVisitor {
class EvacuateNewSpaceVisitor final : public EvacuateVisitorBase {
public:
explicit EvacuateNewSpaceVisitor(
- Heap* heap, LocalAllocator* local_allocator,
+ Heap* heap, EvacuationAllocator* local_allocator,
RecordMigratedSlotVisitor* record_visitor,
Heap::PretenuringFeedbackMap* local_pretenuring_feedback,
bool always_promote_young)
@@ -1545,7 +1547,7 @@ class EvacuateNewSpacePageVisitor final : public HeapObjectVisitor {
class EvacuateOldSpaceVisitor final : public EvacuateVisitorBase {
public:
- EvacuateOldSpaceVisitor(Heap* heap, LocalAllocator* local_allocator,
+ EvacuateOldSpaceVisitor(Heap* heap, EvacuationAllocator* local_allocator,
RecordMigratedSlotVisitor* record_visitor)
: EvacuateVisitorBase(heap, local_allocator, record_visitor) {}
@@ -1602,7 +1604,7 @@ void MarkCompactCollector::MarkRoots(RootVisitor* root_visitor,
ObjectVisitor* custom_root_body_visitor) {
// Mark the heap roots including global variables, stack variables,
// etc., and all objects reachable from them.
- heap()->IterateStrongRoots(root_visitor, VISIT_ONLY_STRONG);
+ heap()->IterateRoots(root_visitor, base::EnumSet<SkipRoot>{SkipRoot::kWeak});
// Custom marking for string table and top optimized frame.
MarkStringTable(custom_root_body_visitor);
@@ -2535,9 +2537,7 @@ void MarkCompactCollector::ClearJSWeakRefs() {
RecordSlot(weak_cell, slot, HeapObject::cast(*slot));
}
}
- if (!isolate()->host_cleanup_finalization_group_callback()) {
- heap()->PostFinalizationRegistryCleanupTaskIfNeeded();
- }
+ heap()->PostFinalizationRegistryCleanupTaskIfNeeded();
}
void MarkCompactCollector::AbortWeakObjects() {
@@ -2575,11 +2575,11 @@ MarkCompactCollector::PrepareRecordRelocSlot(Code host, RelocInfo* rinfo,
addr = rinfo->constant_pool_entry_address();
if (RelocInfo::IsCodeTargetMode(rmode)) {
slot_type = CODE_ENTRY_SLOT;
+ } else if (RelocInfo::IsCompressedEmbeddedObject(rmode)) {
+ slot_type = COMPRESSED_OBJECT_SLOT;
} else {
- // Constant pools don't support compressed values at this time
- // (this may change, therefore use a DCHECK).
DCHECK(RelocInfo::IsFullEmbeddedObject(rmode));
- slot_type = OBJECT_SLOT;
+ slot_type = FULL_OBJECT_SLOT;
}
}
uintptr_t offset = addr - source_page->address();
@@ -2869,7 +2869,7 @@ class Evacuator : public Malloced {
}
Evacuator(Heap* heap, RecordMigratedSlotVisitor* record_visitor,
- LocalAllocator* local_allocator, bool always_promote_young)
+ EvacuationAllocator* local_allocator, bool always_promote_young)
: heap_(heap),
local_pretenuring_feedback_(kInitialLocalPretenuringFeedbackCapacity),
new_space_visitor_(heap_, local_allocator, record_visitor,
@@ -2927,7 +2927,7 @@ class Evacuator : public Malloced {
EvacuateOldSpaceVisitor old_space_visitor_;
// Locally cached collector data.
- LocalAllocator* local_allocator_;
+ EvacuationAllocator* local_allocator_;
// Book keeping info.
double duration_;
@@ -3015,7 +3015,7 @@ class FullEvacuator : public Evacuator {
void RawEvacuatePage(MemoryChunk* chunk, intptr_t* live_bytes) override;
EphemeronRememberedSet ephemeron_remembered_set_;
RecordMigratedSlotVisitor record_visitor_;
- LocalAllocator local_allocator_;
+ EvacuationAllocator local_allocator_;
MarkCompactCollector* collector_;
};
@@ -3877,7 +3877,9 @@ void MarkCompactCollector::UpdatePointersAfterEvacuation() {
{
TRACE_GC(heap()->tracer(),
GCTracer::Scope::MC_EVACUATE_UPDATE_POINTERS_TO_NEW_ROOTS);
- heap_->IterateRoots(&updating_visitor, VISIT_ALL_IN_SWEEP_NEWSPACE);
+ // The external string table is updated at the end.
+ heap_->IterateRoots(&updating_visitor, base::EnumSet<SkipRoot>{
+ SkipRoot::kExternalStringTable});
}
{
@@ -4131,7 +4133,7 @@ class YoungGenerationMarkingVerifier : public MarkingVerifier {
}
void Run() override {
- VerifyRoots(VISIT_ALL_IN_SCAVENGE);
+ VerifyRoots();
VerifyMarking(heap_->new_space());
}
@@ -4181,7 +4183,7 @@ class YoungGenerationEvacuationVerifier : public EvacuationVerifier {
: EvacuationVerifier(heap) {}
void Run() override {
- VerifyRoots(VISIT_ALL_IN_SCAVENGE);
+ VerifyRoots();
VerifyEvacuation(heap_->new_space());
VerifyEvacuation(heap_->old_space());
VerifyEvacuation(heap_->code_space());
@@ -4461,7 +4463,9 @@ void MinorMarkCompactCollector::UpdatePointersAfterEvacuation() {
{
TRACE_GC(heap()->tracer(),
GCTracer::Scope::MINOR_MC_EVACUATE_UPDATE_POINTERS_TO_NEW_ROOTS);
- heap_->IterateRoots(&updating_visitor, VISIT_ALL_IN_MINOR_MC_UPDATE);
+ heap()->IterateRoots(&updating_visitor,
+ base::EnumSet<SkipRoot>{SkipRoot::kExternalStringTable,
+ SkipRoot::kOldGeneration});
}
{
TRACE_GC(heap()->tracer(),
@@ -4915,7 +4919,15 @@ void MinorMarkCompactCollector::MarkRootSetInParallel(
TRACE_GC(heap()->tracer(), GCTracer::Scope::MINOR_MC_MARK_SEED);
isolate()->global_handles()->IdentifyWeakUnmodifiedObjects(
&JSObject::IsUnmodifiedApiObject);
- heap()->IterateRoots(root_visitor, VISIT_ALL_IN_MINOR_MC_MARK);
+ // MinorMC treats all weak roots except for global handles as strong.
+ // That is why we don't set skip_weak = true here and instead visit
+ // global handles separately.
+ heap()->IterateRoots(
+ root_visitor, base::EnumSet<SkipRoot>{SkipRoot::kExternalStringTable,
+ SkipRoot::kGlobalHandles,
+ SkipRoot::kOldGeneration});
+ isolate()->global_handles()->IterateYoungStrongAndDependentRoots(
+ root_visitor);
// Create items for each page.
RememberedSet<OLD_TO_NEW>::IterateMemoryChunks(
heap(), [&job, &slots](MemoryChunk* chunk) {
@@ -5049,7 +5061,7 @@ class YoungGenerationEvacuator : public Evacuator {
void RawEvacuatePage(MemoryChunk* chunk, intptr_t* live_bytes) override;
YoungGenerationRecordMigratedSlotVisitor record_visitor_;
- LocalAllocator local_allocator_;
+ EvacuationAllocator local_allocator_;
MinorMarkCompactCollector* collector_;
};
generated by cgit v1.2.3 (git 2.25.1) at 2024-08-28 00:02:49 +0300