#include <heap-snapshot-generator.h>

Collaboration diagram for v8::internal::HeapSnapshot:

Public Member Functions
	HeapSnapshot (HeapProfiler profiler, const char title, unsigned uid)

void	Delete ()

HeapProfiler *	profiler ()

const char *	title ()

unsigned	uid ()

size_t	RawSnapshotSize () const

HeapEntry *	root ()

HeapEntry *	gc_roots ()

HeapEntry *	gc_subroot (int index)

List< HeapEntry > &	entries ()

List< HeapGraphEdge > &	edges ()

List< HeapGraphEdge * > &	children ()

void	RememberLastJSObjectId ()

SnapshotObjectId	max_snapshot_js_object_id () const

HeapEntry *	AddEntry (HeapEntry::Type type, const char *name, SnapshotObjectId id, size_t size, unsigned trace_node_id)

void	AddSyntheticRootEntries ()

HeapEntry *	GetEntryById (SnapshotObjectId id)

List< HeapEntry * > *	GetSortedEntriesList ()

void	FillChildren ()

void	Print (int max_depth)

void	PrintEntriesSize ()

Private Member Functions
HeapEntry *	AddRootEntry ()

HeapEntry *	AddGcRootsEntry ()

HeapEntry *	AddGcSubrootEntry (int tag, SnapshotObjectId id)

	DISALLOW_COPY_AND_ASSIGN (HeapSnapshot)

Private Attributes
HeapProfiler *	profiler_

const char *	title_

unsigned	uid_

int	root_index_

int	gc_roots_index_

int	gc_subroot_indexes_ [VisitorSynchronization::kNumberOfSyncTags]

List< HeapEntry >	entries_

List< HeapGraphEdge >	edges_

List< HeapGraphEdge * >	children_

List< HeapEntry * >	sorted_entries_

SnapshotObjectId	max_snapshot_js_object_id_

Friends
class	HeapSnapshotTester

Detailed Description

Definition at line 144 of file heap-snapshot-generator.h.

Constructor & Destructor Documentation

◆ HeapSnapshot()

v8::internal::HeapSnapshot::HeapSnapshot	(	HeapProfiler *	profiler,
		const char *	title,
		unsigned	uid
	)

Definition at line 183 of file heap-snapshot-generator.cc.

     : profiler_(profiler),
       title_(title),
       uid_(uid),
       root_index_(HeapEntry::kNoEntry),
       gc_roots_index_(HeapEntry::kNoEntry),
       max_snapshot_js_object_id_(0) {
   STATIC_ASSERT(
       sizeof(HeapGraphEdge) ==
       SnapshotSizeConstants<kPointerSize>::kExpectedHeapGraphEdgeSize);
   STATIC_ASSERT(
       sizeof(HeapEntry) ==
       SnapshotSizeConstants<kPointerSize>::kExpectedHeapEntrySize);
   USE(SnapshotSizeConstants<4>::kExpectedHeapGraphEdgeSize);
   USE(SnapshotSizeConstants<4>::kExpectedHeapEntrySize);
   USE(SnapshotSizeConstants<8>::kExpectedHeapGraphEdgeSize);
   USE(SnapshotSizeConstants<8>::kExpectedHeapEntrySize);
   for (int i = 0; i < VisitorSynchronization::kNumberOfSyncTags; ++i) {
     gc_subroot_indexes_[i] = HeapEntry::kNoEntry;
   }
 }

References gc_subroot_indexes_, v8::internal::VisitorSynchronization::kNumberOfSyncTags, v8::internal::STATIC_ASSERT(), and USE().

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Member Function Documentation

◆ AddEntry()

HeapEntry * v8::internal::HeapSnapshot::AddEntry	(	HeapEntry::Type	type,
		const char *	name,
		SnapshotObjectId	id,
		size_t	size,
		unsigned	trace_node_id
	)

Definition at line 267 of file heap-snapshot-generator.cc.

                                                           {
   HeapEntry entry(this, type, name, id, size, trace_node_id);
   entries_.Add(entry);
   return &entries_.last();
 }

References v8::internal::List< T, AllocationPolicy >::Add(), entries_, v8::internal::List< T, AllocationPolicy >::last(), name, and size.

Referenced by v8::internal::V8HeapExplorer::AddEntry(), AddGcRootsEntry(), AddGcSubrootEntry(), AddRootEntry(), and v8::internal::BasicHeapEntriesAllocator::AllocateEntry().

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◆ AddGcRootsEntry()

HeapEntry * v8::internal::HeapSnapshot::AddGcRootsEntry ( )

private

Definition at line 245 of file heap-snapshot-generator.cc.

                                          {
   DCHECK(gc_roots_index_ == HeapEntry::kNoEntry);
   HeapEntry* entry = AddEntry(HeapEntry::kSynthetic,
                               "(GC roots)",
                               HeapObjectsMap::kGcRootsObjectId,
                               0,
                               0);
   gc_roots_index_ = entry->index();
   return entry;
 }

References AddEntry(), DCHECK, gc_roots_index_, and v8::internal::HeapObjectsMap::kGcRootsObjectId.

Referenced by AddSyntheticRootEntries().

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◆ AddGcSubrootEntry()

HeapEntry * v8::internal::HeapSnapshot::AddGcSubrootEntry	(	int	tag,
		SnapshotObjectId	id
	)

private

Definition at line 257 of file heap-snapshot-generator.cc.

                                                                        {
   DCHECK(gc_subroot_indexes_[tag] == HeapEntry::kNoEntry);
   DCHECK(0 <= tag && tag < VisitorSynchronization::kNumberOfSyncTags);
   HeapEntry* entry = AddEntry(HeapEntry::kSynthetic,
                               VisitorSynchronization::kTagNames[tag], id, 0, 0);
   gc_subroot_indexes_[tag] = entry->index();
   return entry;
 }

References AddEntry(), DCHECK, gc_subroot_indexes_, v8::internal::VisitorSynchronization::kNumberOfSyncTags, and v8::internal::VisitorSynchronization::kTagNames.

Referenced by AddSyntheticRootEntries().

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◆ AddRootEntry()

HeapEntry * v8::internal::HeapSnapshot::AddRootEntry ( )

private

Definition at line 231 of file heap-snapshot-generator.cc.

                                       {
   DCHECK(root_index_ == HeapEntry::kNoEntry);
   DCHECK(entries_.is_empty());  // Root entry must be the first one.
   HeapEntry* entry = AddEntry(HeapEntry::kSynthetic,
                               "",
                               HeapObjectsMap::kInternalRootObjectId,
                               0,
                               0);
   root_index_ = entry->index();
   DCHECK(root_index_ == 0);
   return entry;
 }

References AddEntry(), DCHECK, entries_, v8::internal::HeapObjectsMap::kInternalRootObjectId, and root_index_.

Referenced by AddSyntheticRootEntries().

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◆ AddSyntheticRootEntries()

void v8::internal::HeapSnapshot::AddSyntheticRootEntries ( )

Definition at line 219 of file heap-snapshot-generator.cc.

                                            {
   AddRootEntry();
   AddGcRootsEntry();
   SnapshotObjectId id = HeapObjectsMap::kGcRootsFirstSubrootId;
   for (int tag = 0; tag < VisitorSynchronization::kNumberOfSyncTags; tag++) {
     AddGcSubrootEntry(tag, id);
     id += HeapObjectsMap::kObjectIdStep;
   }
   DCHECK(HeapObjectsMap::kFirstAvailableObjectId == id);
 }

References AddGcRootsEntry(), AddGcSubrootEntry(), AddRootEntry(), DCHECK, v8::internal::HeapObjectsMap::kFirstAvailableObjectId, v8::internal::HeapObjectsMap::kGcRootsFirstSubrootId, v8::internal::VisitorSynchronization::kNumberOfSyncTags, and v8::internal::HeapObjectsMap::kObjectIdStep.

Referenced by v8::internal::HeapSnapshotGenerator::GenerateSnapshot().

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◆ children()

List<HeapGraphEdge*>& v8::internal::HeapSnapshot::children ( )

inline

Definition at line 162 of file heap-snapshot-generator.h.

162 { return children_; }

v8::internal::HeapSnapshot::children_

List< HeapGraphEdge * > children_

Definition: heap-snapshot-generator.h:194

References children_.

Referenced by FillChildren(), and v8::internal::HeapSnapshotJSONSerializer::SerializeEdges().

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◆ Delete()

void v8::internal::HeapSnapshot::Delete ( )

Definition at line 208 of file heap-snapshot-generator.cc.

                           {
   profiler_->RemoveSnapshot(this);
   delete this;
 }

References profiler_, and v8::internal::HeapProfiler::RemoveSnapshot().

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◆ DISALLOW_COPY_AND_ASSIGN()

v8::internal::HeapSnapshot::DISALLOW_COPY_AND_ASSIGN ( HeapSnapshot )

private

◆ edges()

List<HeapGraphEdge>& v8::internal::HeapSnapshot::edges ( )

inline

Definition at line 161 of file heap-snapshot-generator.h.

161 { return edges_; }

v8::internal::HeapSnapshot::edges_

List< HeapGraphEdge > edges_

Definition: heap-snapshot-generator.h:193

References edges_.

Referenced by FillChildren(), and v8::internal::HeapSnapshotJSONSerializer::SerializeSnapshot().

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◆ entries()

List<HeapEntry>& v8::internal::HeapSnapshot::entries ( )

inline

Definition at line 160 of file heap-snapshot-generator.h.

160 { return entries_; }

References entries_.

Referenced by FillChildren(), v8::internal::SnapshotFiller::FindEntry(), v8::internal::HeapSnapshotJSONSerializer::SerializeNodes(), v8::internal::HeapSnapshotJSONSerializer::SerializeSnapshot(), v8::internal::SnapshotFiller::SetIndexedAutoIndexReference(), v8::internal::SnapshotFiller::SetIndexedReference(), v8::internal::SnapshotFiller::SetNamedAutoIndexReference(), and v8::internal::SnapshotFiller::SetNamedReference().

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◆ FillChildren()

void v8::internal::HeapSnapshot::FillChildren ( )

Definition at line 278 of file heap-snapshot-generator.cc.

                                 {
   DCHECK(children().is_empty());
   children().Allocate(edges().length());
   int children_index = 0;
   for (int i = 0; i < entries().length(); ++i) {
     HeapEntry* entry = &entries()[i];
     children_index = entry->set_children_index(children_index);
   }
   DCHECK(edges().length() == children_index);
   for (int i = 0; i < edges().length(); ++i) {
     HeapGraphEdge* edge = &edges()[i];
     edge->ReplaceToIndexWithEntry(this);
     edge->from()->add_child(edge);
   }
 }

References children(), DCHECK, edges(), and entries().

Referenced by v8::internal::HeapSnapshotGenerator::GenerateSnapshot().

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◆ gc_roots()

HeapEntry* v8::internal::HeapSnapshot::gc_roots ( )

inline

Definition at line 156 of file heap-snapshot-generator.h.

156 { return &entries_[gc_roots_index_]; }

References entries_, and gc_roots_index_.

Referenced by v8::internal::V8HeapExplorer::SetGcRootsReference(), and v8::internal::V8HeapExplorer::SetRootGcRootsReference().

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◆ gc_subroot()

HeapEntry* v8::internal::HeapSnapshot::gc_subroot ( int index )

inline

Definition at line 157 of file heap-snapshot-generator.h.

                                    {
     return &entries_[gc_subroot_indexes_[index]];
   }

References entries_, and gc_subroot_indexes_.

Referenced by v8::internal::V8HeapExplorer::SetGcRootsReference(), and v8::internal::V8HeapExplorer::SetGcSubrootReference().

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◆ GetEntryById()

HeapEntry * v8::internal::HeapSnapshot::GetEntryById ( SnapshotObjectId id )

Definition at line 307 of file heap-snapshot-generator.cc.

                                                          {
   List<HeapEntry*>* entries_by_id = GetSortedEntriesList();
   // Perform a binary search by id.
   int index = SortedListBSearch(*entries_by_id, FindEntryById(id));
   if (index == -1)
     return NULL;
   return entries_by_id->at(index);
 }

References v8::internal::List< T, AllocationPolicy >::at(), GetSortedEntriesList(), NULL, and v8::internal::SortedListBSearch().

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◆ GetSortedEntriesList()

List< HeapEntry * > * v8::internal::HeapSnapshot::GetSortedEntriesList ( )

Definition at line 325 of file heap-snapshot-generator.cc.

                                                      {
   if (sorted_entries_.is_empty()) {
     sorted_entries_.Allocate(entries_.length());
     for (int i = 0; i < entries_.length(); ++i) {
       sorted_entries_[i] = &entries_[i];
     }
     sorted_entries_.Sort(SortByIds);
   }
   return &sorted_entries_;
 }

References entries_, v8::internal::List< T, AllocationPolicy >::Sort(), v8::internal::SortByIds(), and sorted_entries_.

Referenced by GetEntryById().

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◆ max_snapshot_js_object_id()

SnapshotObjectId v8::internal::HeapSnapshot::max_snapshot_js_object_id ( ) const

inline

Definition at line 164 of file heap-snapshot-generator.h.

                                                      {
     return max_snapshot_js_object_id_;
   }

References max_snapshot_js_object_id_.

◆ Print()

void v8::internal::HeapSnapshot::Print ( int max_depth )

Definition at line 337 of file heap-snapshot-generator.cc.

                                       {
   root()->Print("", "", max_depth, 0);
 }

References root().

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◆ PrintEntriesSize()

void v8::internal::HeapSnapshot::PrintEntriesSize ( )

◆ profiler()

HeapProfiler* v8::internal::HeapSnapshot::profiler ( )

inline

Definition at line 151 of file heap-snapshot-generator.h.

151 { return profiler_; }

References profiler_.

Referenced by v8::internal::V8HeapExplorer::AddEntry(), v8::internal::HeapSnapshotJSONSerializer::Serialize(), v8::internal::HeapSnapshotJSONSerializer::SerializeSnapshot(), v8::internal::HeapSnapshotJSONSerializer::SerializeTraceNodeInfos(), and v8::internal::HeapSnapshotJSONSerializer::SerializeTraceTree().

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◆ RawSnapshotSize()

size_t v8::internal::HeapSnapshot::RawSnapshotSize ( ) const

Definition at line 342 of file heap-snapshot-generator.cc.

                                            {
   return
       sizeof(*this) +
       GetMemoryUsedByList(entries_) +
       GetMemoryUsedByList(edges_) +
       GetMemoryUsedByList(children_) +
       GetMemoryUsedByList(sorted_entries_);
 }

References children_, edges_, entries_, v8::internal::GetMemoryUsedByList(), and sorted_entries_.

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◆ RememberLastJSObjectId()

void v8::internal::HeapSnapshot::RememberLastJSObjectId ( )

Definition at line 214 of file heap-snapshot-generator.cc.

                                           {
   max_snapshot_js_object_id_ = profiler_->heap_object_map()->last_assigned_id();
 }

References v8::internal::HeapProfiler::heap_object_map(), v8::internal::HeapObjectsMap::last_assigned_id(), max_snapshot_js_object_id_, and profiler_.

Referenced by v8::internal::HeapSnapshotGenerator::GenerateSnapshot().

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◆ root()

HeapEntry* v8::internal::HeapSnapshot::root ( )

inline

Definition at line 155 of file heap-snapshot-generator.h.

155 { return &entries_[root_index_]; }

References entries_, and root_index_.

Referenced by Print(), v8::internal::HeapSnapshotJSONSerializer::SerializeImpl(), v8::internal::V8HeapExplorer::SetRootGcRootsReference(), v8::internal::NativeObjectsExplorer::SetRootNativeRootsReference(), and v8::internal::V8HeapExplorer::SetUserGlobalReference().

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◆ title()

const char* v8::internal::HeapSnapshot::title ( )

inline

Definition at line 152 of file heap-snapshot-generator.h.

152 { return title_; }

References title_.

Referenced by v8::internal::HeapSnapshotJSONSerializer::SerializeSnapshot().

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◆ uid()

unsigned v8::internal::HeapSnapshot::uid ( )

inline

Definition at line 153 of file heap-snapshot-generator.h.

153 { return uid_; }

References uid_.

Referenced by v8::internal::HeapSnapshotJSONSerializer::SerializeSnapshot().

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Friends And Related Function Documentation

◆ HeapSnapshotTester

friend class HeapSnapshotTester

friend

Definition at line 198 of file heap-snapshot-generator.h.

Member Data Documentation

◆ children_

List<HeapGraphEdge*> v8::internal::HeapSnapshot::children_

private

Definition at line 194 of file heap-snapshot-generator.h.

Referenced by children(), and RawSnapshotSize().

◆ edges_

List<HeapGraphEdge> v8::internal::HeapSnapshot::edges_

private

Definition at line 193 of file heap-snapshot-generator.h.

Referenced by edges(), and RawSnapshotSize().

◆ entries_

List<HeapEntry> v8::internal::HeapSnapshot::entries_

private

Definition at line 192 of file heap-snapshot-generator.h.

Referenced by AddEntry(), AddRootEntry(), entries(), gc_roots(), gc_subroot(), GetSortedEntriesList(), RawSnapshotSize(), and root().

◆ gc_roots_index_

int v8::internal::HeapSnapshot::gc_roots_index_

private

Definition at line 190 of file heap-snapshot-generator.h.

Referenced by AddGcRootsEntry(), and gc_roots().

◆ gc_subroot_indexes_

int v8::internal::HeapSnapshot::gc_subroot_indexes_[VisitorSynchronization::kNumberOfSyncTags]

private

Definition at line 191 of file heap-snapshot-generator.h.

Referenced by AddGcSubrootEntry(), gc_subroot(), and HeapSnapshot().

◆ max_snapshot_js_object_id_

SnapshotObjectId v8::internal::HeapSnapshot::max_snapshot_js_object_id_

private

Definition at line 196 of file heap-snapshot-generator.h.

Referenced by max_snapshot_js_object_id(), and RememberLastJSObjectId().

◆ profiler_

HeapProfiler* v8::internal::HeapSnapshot::profiler_

private

Definition at line 186 of file heap-snapshot-generator.h.

Referenced by Delete(), profiler(), and RememberLastJSObjectId().

◆ root_index_

int v8::internal::HeapSnapshot::root_index_

private

Definition at line 189 of file heap-snapshot-generator.h.

Referenced by AddRootEntry(), and root().

◆ sorted_entries_

List<HeapEntry*> v8::internal::HeapSnapshot::sorted_entries_

private

Definition at line 195 of file heap-snapshot-generator.h.

Referenced by GetSortedEntriesList(), and RawSnapshotSize().

◆ title_

const char* v8::internal::HeapSnapshot::title_

private

Definition at line 187 of file heap-snapshot-generator.h.

Referenced by title().

◆ uid_

unsigned v8::internal::HeapSnapshot::uid_

private

Definition at line 188 of file heap-snapshot-generator.h.

Referenced by uid().

The documentation for this class was generated from the following files:

/mnt/V8SourceCode/src/heap-snapshot-generator.h
/mnt/V8SourceCode/src/heap-snapshot-generator.cc

Public Member Functions

Private Member Functions

Private Attributes

Friends

Detailed Description

Constructor & Destructor Documentation

◆ HeapSnapshot()

Member Function Documentation

◆ AddEntry()

◆ AddGcRootsEntry()

◆ AddGcSubrootEntry()

◆ AddRootEntry()

◆ AddSyntheticRootEntries()

◆ children()

◆ Delete()

◆ DISALLOW_COPY_AND_ASSIGN()

◆ edges()

◆ entries()

◆ FillChildren()

◆ gc_roots()

◆ gc_subroot()

◆ GetEntryById()

◆ GetSortedEntriesList()

◆ max_snapshot_js_object_id()

◆ Print()

◆ PrintEntriesSize()

◆ profiler()

◆ RawSnapshotSize()

◆ RememberLastJSObjectId()

◆ root()

◆ title()

◆ uid()

Friends And Related Function Documentation

◆ HeapSnapshotTester

Member Data Documentation

◆ children_

◆ edges_

◆ entries_

◆ gc_roots_index_

◆ gc_subroot_indexes_

◆ max_snapshot_js_object_id_

◆ profiler_

◆ root_index_

◆ sorted_entries_

◆ title_

◆ uid_