Revision: 5849
Author: [email protected]
Date: Thu Nov 18 02:38:25 2010
Log: New heap profiler: include all heap objects and refs into snapshot.
Otherwise, retaned memory sizes are not precise. This increases size
of heap snapshot, I will deal with this later. Heap objects and
references previously missing in snapshot are now marked as 'hidden'.
That means, they not shown to user, but participate in sizes
calculation.
Other small changes:
- added 'shortcut' graph edges: e.g. to pin global objects on top
level;
- meta-information in JSON snapshot is no more double encoded.
Review URL: http://codereview.chromium.org/5139002
http://code.google.com/p/v8/source/detail?r=5849
Modified:
/branches/bleeding_edge/include/v8-profiler.h
/branches/bleeding_edge/src/api.cc
/branches/bleeding_edge/src/heap-profiler.cc
/branches/bleeding_edge/src/profile-generator-inl.h
/branches/bleeding_edge/src/profile-generator.cc
/branches/bleeding_edge/src/profile-generator.h
/branches/bleeding_edge/test/cctest/test-heap-profiler.cc
=======================================
--- /branches/bleeding_edge/include/v8-profiler.h Mon Oct 18 02:15:38 2010
+++ /branches/bleeding_edge/include/v8-profiler.h Thu Nov 18 02:38:25 2010
@@ -197,8 +197,13 @@
kContextVariable = 0, // A variable from a function context.
kElement = 1, // An element of an array.
kProperty = 2, // A named object property.
- kInternal = 3 // A link that can't be accessed from JS,
- // thus, its name isn't a real property name.
+ kInternal = 3, // A link that can't be accessed from JS,
+ // thus, its name isn't a real property name
+ // (e.g. parts of a ConsString).
+ kHidden = 4, // A link that is needed for proper sizes
+ // calculation, but may be hidden from user.
+ kShortcut = 5 // A link that must not be followed during
+ // sizes calculation.
};
/** Returns edge type (see HeapGraphEdge::Type). */
@@ -240,7 +245,7 @@
class V8EXPORT HeapGraphNode {
public:
enum Type {
- kInternal = 0, // Internal node, a virtual one, for housekeeping.
+ kHidden = 0, // Hidden node, may be filtered when shown to user.
kArray = 1, // An array of elements.
kString = 2, // A string.
kObject = 3, // A JS object (except for arrays and strings).
=======================================
--- /branches/bleeding_edge/src/api.cc Mon Nov 15 05:23:30 2010
+++ /branches/bleeding_edge/src/api.cc Thu Nov 18 02:38:25 2010
@@ -4669,9 +4669,11 @@
case i::HeapGraphEdge::kContextVariable:
case i::HeapGraphEdge::kInternal:
case i::HeapGraphEdge::kProperty:
+ case i::HeapGraphEdge::kShortcut:
return Handle<String>(ToApi<String>(i::Factory::LookupAsciiSymbol(
edge->name())));
case i::HeapGraphEdge::kElement:
+ case i::HeapGraphEdge::kHidden:
return Handle<Number>(ToApi<Number>(i::Factory::NewNumberFromInt(
edge->index())));
default: UNREACHABLE();
=======================================
--- /branches/bleeding_edge/src/heap-profiler.cc Mon Nov 15 02:38:24 2010
+++ /branches/bleeding_edge/src/heap-profiler.cc Thu Nov 18 02:38:25 2010
@@ -927,10 +927,16 @@
void Call(const JSObjectsCluster& cluster,
const NumberAndSizeInfo& number_and_size) {
int child_index, retainer_index;
- map_->CountReference(ClusterAsHeapObject(cluster), child_,
- &child_index, &retainer_index);
- map_->Map(ClusterAsHeapObject(cluster))->SetElementReference(
- child_index, number_and_size.number(), child_entry_,
retainer_index);
+ map_->CountReference(ClusterAsHeapObject(cluster),
+ child_,
+ &child_index,
+ &retainer_index);
+ map_->Map(ClusterAsHeapObject(cluster))->SetIndexedReference(
+ HeapGraphEdge::kElement,
+ child_index,
+ number_and_size.number(),
+ child_entry_,
+ retainer_index);
}
private:
@@ -1042,7 +1048,7 @@
if (agg_snapshot_->info()[i].bytes() > 0) {
AddEntryFromAggregatedSnapshot(snapshot,
&root_child_index,
- HeapEntry::kInternal,
+ HeapEntry::kHidden,
agg_snapshot_->info()[i].name(),
agg_snapshot_->info()[i].number(),
agg_snapshot_->info()[i].bytes(),
=======================================
--- /branches/bleeding_edge/src/profile-generator-inl.h Mon Sep 20 02:29:12
2010
+++ /branches/bleeding_edge/src/profile-generator-inl.h Thu Nov 18 02:38:25
2010
@@ -110,15 +110,13 @@
for (HashMap::Entry* p = entries_.Start();
p != NULL;
p = entries_.Next(p)) {
- if (!IsAlias(p->value)) {
- EntryInfo* entry_info = reinterpret_cast<EntryInfo*>(p->value);
- entry_info->entry = visitor->GetEntry(
- reinterpret_cast<HeapObject*>(p->key),
- entry_info->children_count,
- entry_info->retainers_count);
- entry_info->children_count = 0;
- entry_info->retainers_count = 0;
- }
+ EntryInfo* entry_info = reinterpret_cast<EntryInfo*>(p->value);
+ entry_info->entry = visitor->GetEntry(
+ reinterpret_cast<HeapObject*>(p->key),
+ entry_info->children_count,
+ entry_info->retainers_count);
+ entry_info->children_count = 0;
+ entry_info->retainers_count = 0;
}
}
=======================================
--- /branches/bleeding_edge/src/profile-generator.cc Mon Nov 8 07:18:12
2010
+++ /branches/bleeding_edge/src/profile-generator.cc Thu Nov 18 02:38:25
2010
@@ -829,7 +829,10 @@
void HeapGraphEdge::Init(
int child_index, Type type, const char* name, HeapEntry* to) {
- ASSERT(type == kContextVariable || type == kProperty || type ==
kInternal);
+ ASSERT(type == kContextVariable
+ || type == kProperty
+ || type == kInternal
+ || type == kShortcut);
child_index_ = child_index;
type_ = type;
name_ = name;
@@ -837,12 +840,18 @@
}
-void HeapGraphEdge::Init(int child_index, int index, HeapEntry* to) {
+void HeapGraphEdge::Init(int child_index, Type type, int index, HeapEntry*
to) {
+ ASSERT(type == kElement || type == kHidden);
child_index_ = child_index;
- type_ = kElement;
+ type_ = type;
index_ = index;
to_ = to;
}
+
+
+void HeapGraphEdge::Init(int child_index, int index, HeapEntry* to) {
+ Init(child_index, kElement, index, to);
+}
HeapEntry* HeapGraphEdge::From() {
@@ -879,9 +888,12 @@
}
-void HeapEntry::SetElementReference(
- int child_index, int index, HeapEntry* entry, int retainer_index) {
- children_arr()[child_index].Init(child_index, index, entry);
+void HeapEntry::SetIndexedReference(HeapGraphEdge::Type type,
+ int child_index,
+ int index,
+ HeapEntry* entry,
+ int retainer_index) {
+ children_arr()[child_index].Init(child_index, type, index, entry);
entry->retainers_arr()[retainer_index] = children_arr() + child_index;
}
@@ -929,6 +941,7 @@
HeapEntry* entry = list.RemoveLast();
Vector<HeapGraphEdge> children = entry->children();
for (int i = 0; i < children.length(); ++i) {
+ if (children[i].type() == HeapGraphEdge::kShortcut) continue;
HeapEntry* child = children[i].to();
if (!child->painted_reachable()) {
list.Add(child);
@@ -985,6 +998,12 @@
case HeapGraphEdge::kProperty:
OS::Print(" %*c %s: ", indent, ' ', edge.name());
break;
+ case HeapGraphEdge::kHidden:
+ OS::Print(" %*c $%d: ", indent, ' ', edge.index());
+ break;
+ case HeapGraphEdge::kShortcut:
+ OS::Print(" %*c ^%s: ", indent, ' ', edge.name());
+ break;
default:
OS::Print("!!! unknown edge type: %d ", edge.type());
}
@@ -995,7 +1014,7 @@
const char* HeapEntry::TypeAsString() {
switch (type()) {
- case kInternal: return "/internal/";
+ case kHidden: return "/hidden/";
case kObject: return "/object/";
case kClosure: return "/closure/";
case kString: return "/string/";
@@ -1094,6 +1113,7 @@
HeapEntry* curr = list.RemoveLast();
Vector<HeapGraphEdge> children = curr->children();
for (int i = 0; i < children.length(); ++i) {
+ if (children[i].type() == HeapGraphEdge::kShortcut) continue;
HeapEntry* child = children[i].to();
if (child != entry && child->not_painted_reachable_from_others()) {
list.Add(child);
@@ -1192,6 +1212,7 @@
OS::Print("[#%s] ", edge->name());
break;
case HeapGraphEdge::kElement:
+ case HeapGraphEdge::kHidden:
OS::Print("[%d] ", edge->index());
break;
case HeapGraphEdge::kInternal:
@@ -1200,6 +1221,9 @@
case HeapGraphEdge::kProperty:
OS::Print("[%s] ", edge->name());
break;
+ case HeapGraphEdge::kShortcut:
+ OS::Print("[^%s] ", edge->name());
+ break;
default:
OS::Print("!!! unknown edge type: %d ", edge->type());
}
@@ -1211,6 +1235,8 @@
HeapObject *const HeapSnapshot::kInternalRootObject =
reinterpret_cast<HeapObject*>(1);
+HeapObject *const HeapSnapshot::kGcRootsObject =
+ reinterpret_cast<HeapObject*>(2);
// It is very important to keep objects that form a heap snapshot
@@ -1240,6 +1266,7 @@
title_(title),
uid_(uid),
root_entry_(NULL),
+ gc_roots_entry_(NULL),
raw_entries_(NULL),
entries_sorted_(false) {
STATIC_ASSERT(
@@ -1280,9 +1307,20 @@
if (object == kInternalRootObject) {
ASSERT(root_entry_ == NULL);
ASSERT(retainers_count == 0);
- root_entry_ = AddEntry(
- HeapEntry::kInternal, "", 0, 0, children_count, retainers_count);
- return root_entry_;
+ return (root_entry_ = AddEntry(HeapEntry::kObject,
+ "",
+ HeapObjectsMap::kInternalRootObjectId,
+ 0,
+ children_count,
+ retainers_count));
+ } else if (object == kGcRootsObject) {
+ ASSERT(gc_roots_entry_ == NULL);
+ return (gc_roots_entry_ = AddEntry(HeapEntry::kObject,
+ "(GC roots)",
+ HeapObjectsMap::kGcRootsObjectId,
+ 0,
+ children_count,
+ retainers_count));
} else if (object->IsJSFunction()) {
JSFunction* func = JSFunction::cast(object);
SharedFunctionInfo* shared = func->shared();
@@ -1345,22 +1383,11 @@
children_count,
retainers_count);
}
- // No interest in this object.
- return NULL;
-}
-
-
-bool HeapSnapshot::WillAddEntry(HeapObject* object) {
- return object == kInternalRootObject
- || object->IsJSFunction()
- || object->IsJSRegExp()
- || object->IsJSObject()
- || object->IsString()
- || object->IsCode()
- || object->IsSharedFunctionInfo()
- || object->IsScript()
- || object->IsFixedArray()
- || object->IsHeapNumber();
+ return AddEntry(object,
+ HeapEntry::kHidden,
+ "system",
+ children_count,
+ retainers_count);
}
@@ -1387,7 +1414,7 @@
return AddEntry(type,
name,
collection_->GetObjectId(object->address()),
- GetObjectSize(object),
+ object->Size(),
children_count,
retainers_count);
}
@@ -1417,36 +1444,6 @@
(raw_entries_ + raw_entries_size_));
return entries_.last();
}
-
-
-int HeapSnapshot::GetObjectSize(HeapObject* obj) {
- return obj->IsJSObject() ?
- CalculateNetworkSize(JSObject::cast(obj)) : obj->Size();
-}
-
-
-int HeapSnapshot::CalculateNetworkSize(JSObject* obj) {
- int size = obj->Size();
- // If 'properties' and 'elements' are non-empty (thus, non-shared),
- // take their size into account.
- if (obj->properties() != Heap::empty_fixed_array()) {
- size += obj->properties()->Size();
- }
- if (obj->elements() != Heap::empty_fixed_array()) {
- size += obj->elements()->Size();
- }
- // For functions, also account non-empty context and literals sizes.
- if (obj->IsJSFunction()) {
- JSFunction* f = JSFunction::cast(obj);
- if (f->unchecked_context()->IsContext()) {
- size += f->context()->Size();
- }
- if (f->literals()->length() != 0) {
- size += f->literals()->Size();
- }
- }
- return size;
-}
HeapSnapshotsDiff* HeapSnapshot::CompareWith(HeapSnapshot* snapshot) {
@@ -1475,9 +1472,14 @@
}
+const uint64_t HeapObjectsMap::kInternalRootObjectId = 0;
+const uint64_t HeapObjectsMap::kGcRootsObjectId = 1;
+// Increase kFirstAvailableObjectId if new 'special' objects appear.
+const uint64_t HeapObjectsMap::kFirstAvailableObjectId = 2;
+
HeapObjectsMap::HeapObjectsMap()
: initial_fill_mode_(true),
- next_id_(1),
+ next_id_(kFirstAvailableObjectId),
entries_map_(AddressesMatch),
entries_(new List<EntryInfo>()) { }
@@ -1628,26 +1630,15 @@
HeapEntriesMap::~HeapEntriesMap() {
for (HashMap::Entry* p = entries_.Start(); p != NULL; p =
entries_.Next(p)) {
- if (!IsAlias(p->value)) delete reinterpret_cast<EntryInfo*>(p->value);
+ delete reinterpret_cast<EntryInfo*>(p->value);
}
}
-
-
-void HeapEntriesMap::Alias(HeapObject* from, HeapObject* to) {
- HashMap::Entry* from_cache_entry = entries_.Lookup(from, Hash(from),
true);
- HashMap::Entry* to_cache_entry = entries_.Lookup(to, Hash(to), false);
- if (from_cache_entry->value == NULL) {
- ASSERT(to_cache_entry != NULL);
- from_cache_entry->value = MakeAlias(to_cache_entry->value);
- }
-}
HeapEntry* HeapEntriesMap::Map(HeapObject* object) {
HashMap::Entry* cache_entry = entries_.Lookup(object, Hash(object),
false);
if (cache_entry != NULL) {
- EntryInfo* entry_info =
- reinterpret_cast<EntryInfo*>(Unalias(cache_entry->value));
+ EntryInfo* entry_info =
reinterpret_cast<EntryInfo*>(cache_entry->value);
return entry_info->entry;
} else {
return NULL;
@@ -1671,9 +1662,9 @@
ASSERT(from_cache_entry != NULL);
ASSERT(to_cache_entry != NULL);
EntryInfo* from_entry_info =
- reinterpret_cast<EntryInfo*>(Unalias(from_cache_entry->value));
+ reinterpret_cast<EntryInfo*>(from_cache_entry->value);
EntryInfo* to_entry_info =
- reinterpret_cast<EntryInfo*>(Unalias(to_cache_entry->value));
+ reinterpret_cast<EntryInfo*>(to_cache_entry->value);
if (prev_children_count)
*prev_children_count = from_entry_info->children_count;
if (prev_retainers_count)
@@ -1683,6 +1674,36 @@
++total_children_count_;
++total_retainers_count_;
}
+
+
+HeapObjectsSet::HeapObjectsSet()
+ : entries_(HeapEntriesMap::HeapObjectsMatch) {
+}
+
+
+void HeapObjectsSet::Clear() {
+ entries_.Clear();
+}
+
+
+bool HeapObjectsSet::Contains(Object* obj) {
+ if (!obj->IsHeapObject()) return false;
+ HeapObject* object = HeapObject::cast(obj);
+ HashMap::Entry* cache_entry =
+ entries_.Lookup(object, HeapEntriesMap::Hash(object), false);
+ return cache_entry != NULL;
+}
+
+
+void HeapObjectsSet::Insert(Object* obj) {
+ if (!obj->IsHeapObject()) return;
+ HeapObject* object = HeapObject::cast(obj);
+ HashMap::Entry* cache_entry =
+ entries_.Lookup(object, HeapEntriesMap::Hash(object), true);
+ if (cache_entry->value == NULL) {
+ cache_entry->value = HeapEntriesMap::kHeapEntryPlaceholder;
+ }
+}
HeapSnapshotGenerator::HeapSnapshotGenerator(HeapSnapshot* snapshot)
@@ -1699,7 +1720,8 @@
entries_->Pair(obj, HeapEntriesMap::kHeapEntryPlaceholder);
return HeapEntriesMap::kHeapEntryPlaceholder;
}
- void SetElementReference(HeapObject* parent_obj,
+ void SetIndexedReference(HeapGraphEdge::Type,
+ HeapObject* parent_obj,
HeapEntry*,
int,
Object* child_obj,
@@ -1714,10 +1736,18 @@
HeapEntry*) {
entries_->CountReference(parent_obj, HeapObject::cast(child_obj));
}
- void SetRootReference(Object* child_obj, HeapEntry*) {
+ void SetRootShortcutReference(Object* child_obj, HeapEntry*) {
entries_->CountReference(
HeapSnapshot::kInternalRootObject, HeapObject::cast(child_obj));
}
+ void SetRootGcRootsReference() {
+ entries_->CountReference(
+ HeapSnapshot::kInternalRootObject, HeapSnapshot::kGcRootsObject);
+ }
+ void SetStrongRootReference(Object* child_obj, HeapEntry*) {
+ entries_->CountReference(
+ HeapSnapshot::kGcRootsObject, HeapObject::cast(child_obj));
+ }
private:
HeapEntriesMap* entries_;
};
@@ -1733,16 +1763,19 @@
UNREACHABLE();
return NULL;
}
- void SetElementReference(HeapObject* parent_obj,
+ void SetIndexedReference(HeapGraphEdge::Type type,
+ HeapObject* parent_obj,
HeapEntry* parent_entry,
int index,
Object* child_obj,
HeapEntry* child_entry) {
int child_index, retainer_index;
- entries_->CountReference(parent_obj, HeapObject::cast(child_obj),
- &child_index, &retainer_index);
- parent_entry->SetElementReference(
- child_index, index, child_entry, retainer_index);
+ entries_->CountReference(parent_obj,
+ HeapObject::cast(child_obj),
+ &child_index,
+ &retainer_index);
+ parent_entry->SetIndexedReference(
+ type, child_index, index, child_entry, retainer_index);
}
void SetNamedReference(HeapGraphEdge::Type type,
HeapObject* parent_obj,
@@ -1759,13 +1792,43 @@
child_entry,
retainer_index);
}
- void SetRootReference(Object* child_obj, HeapEntry* child_entry) {
+ void SetRootGcRootsReference() {
int child_index, retainer_index;
- entries_->CountReference(
- HeapSnapshot::kInternalRootObject, HeapObject::cast(child_obj),
- &child_index, &retainer_index);
- snapshot_->root()->SetElementReference(
- child_index, child_index + 1, child_entry, retainer_index);
+ entries_->CountReference(HeapSnapshot::kInternalRootObject,
+ HeapSnapshot::kGcRootsObject,
+ &child_index,
+ &retainer_index);
+ snapshot_->root()->SetIndexedReference(HeapGraphEdge::kElement,
+ child_index,
+ child_index + 1,
+ snapshot_->gc_roots(),
+ retainer_index);
+ }
+ void SetRootShortcutReference(Object* child_obj,
+ HeapEntry* child_entry) {
+ int child_index, retainer_index;
+ entries_->CountReference(HeapSnapshot::kInternalRootObject,
+ HeapObject::cast(child_obj),
+ &child_index,
+ &retainer_index);
+ snapshot_->root()->SetNamedReference(HeapGraphEdge::kShortcut,
+ child_index,
+ collection_->GetName(child_index
+ 1),
+ child_entry,
+ retainer_index);
+ }
+ void SetStrongRootReference(Object* child_obj,
+ HeapEntry* child_entry) {
+ int child_index, retainer_index;
+ entries_->CountReference(HeapSnapshot::kGcRootsObject,
+ HeapObject::cast(child_obj),
+ &child_index,
+ &retainer_index);
+ snapshot_->gc_roots()->SetIndexedReference(HeapGraphEdge::kElement,
+ child_index,
+ child_index + 1,
+ child_entry,
+ retainer_index);
}
private:
HeapSnapshot* snapshot_;
@@ -1788,6 +1851,19 @@
HeapSnapshot* snapshot_;
};
+class RootsReferencesExtractor : public ObjectVisitor {
+ public:
+ explicit RootsReferencesExtractor(HeapSnapshotGenerator* generator)
+ : generator_(generator) {
+ }
+ void VisitPointers(Object** start, Object** end) {
+ for (Object** p = start; p < end; p++)
generator_->SetGcRootsReference(*p);
+ }
+ private:
+ HeapSnapshotGenerator* generator_;
+};
+
+
void HeapSnapshotGenerator::GenerateSnapshot() {
AssertNoAllocation no_alloc;
@@ -1795,12 +1871,14 @@
SnapshotCounter counter(&entries_);
filler_ = &counter;
filler_->AddEntry(HeapSnapshot::kInternalRootObject);
- HeapIterator iterator1;
- for (HeapObject* obj = iterator1.next();
- obj != NULL;
- obj = iterator1.next()) {
+ filler_->AddEntry(HeapSnapshot::kGcRootsObject);
+ HeapIterator iterator(HeapIterator::kPreciseFiltering);
+ for (HeapObject* obj = iterator.next(); obj != NULL; obj =
iterator.next()) {
ExtractReferences(obj);
}
+ SetRootGcRootsReference();
+ RootsReferencesExtractor extractor(this);
+ Heap::IterateRoots(&extractor, VISIT_ONLY_STRONG);
// Allocate and fill entries in the snapshot, allocate references.
snapshot_->AllocateEntries(entries_.entries_count(),
@@ -1812,12 +1890,12 @@
// Pass 2. Fill references.
SnapshotFiller filler(snapshot_, &entries_);
filler_ = &filler;
- HeapIterator iterator2;
- for (HeapObject* obj = iterator2.next();
- obj != NULL;
- obj = iterator2.next()) {
+ iterator.reset();
+ for (HeapObject* obj = iterator.next(); obj != NULL; obj =
iterator.next()) {
ExtractReferences(obj);
}
+ SetRootGcRootsReference();
+ Heap::IterateRoots(&extractor, VISIT_ONLY_STRONG);
}
@@ -1825,25 +1903,8 @@
if (!obj->IsHeapObject()) return NULL;
HeapObject* object = HeapObject::cast(obj);
HeapEntry* entry = entries_.Map(object);
-
// A new entry.
- if (entry == NULL) {
- if (obj->IsJSGlobalPropertyCell()) {
- Object* cell_target = JSGlobalPropertyCell::cast(obj)->value();
- entry = GetEntry(cell_target);
- // If GPC references an object that we have interest in (see
- // HeapSnapshot::AddEntry, WillAddEntry), add the object. We
- // don't store HeapEntries for GPCs. Instead, we make our hash
- // map to point to object's HeapEntry by GPCs address.
- if (entry != NULL) {
- entries_.Alias(object, HeapObject::cast(cell_target));
- }
- return entry;
- }
-
- if (snapshot_->WillAddEntry(object)) entry = filler_->AddEntry(object);
- }
-
+ if (entry == NULL) entry = filler_->AddEntry(object);
return entry;
}
@@ -1852,43 +1913,44 @@
public:
IndexedReferencesExtractor(HeapSnapshotGenerator* generator,
HeapObject* parent_obj,
- HeapEntry* parent_entry)
+ HeapEntry* parent_entry,
+ HeapObjectsSet* known_references = NULL)
: generator_(generator),
parent_obj_(parent_obj),
parent_(parent_entry),
+ known_references_(known_references),
next_index_(1) {
}
-
- void VisitPointer(Object** o) {
- generator_->SetElementReference(parent_obj_, parent_, next_index_++,
*o);
- }
-
void VisitPointers(Object** start, Object** end) {
- for (Object** p = start; p < end; p++) VisitPointer(p);
- }
-
+ for (Object** p = start; p < end; p++) {
+ if (!known_references_ || !known_references_->Contains(*p)) {
+ generator_->SetHiddenReference(parent_obj_, parent_,
next_index_++, *p);
+ }
+ }
+ }
private:
HeapSnapshotGenerator* generator_;
HeapObject* parent_obj_;
HeapEntry* parent_;
+ HeapObjectsSet* known_references_;
int next_index_;
};
void HeapSnapshotGenerator::ExtractReferences(HeapObject* obj) {
- // We need to reference JS global objects from snapshot's root.
- // We use JSGlobalProxy because this is what embedder (e.g. browser)
- // uses for the global object.
- if (obj->IsJSGlobalProxy()) {
- JSGlobalProxy* proxy = JSGlobalProxy::cast(obj);
- SetRootReference(proxy->map()->prototype());
- return;
- }
-
HeapEntry* entry = GetEntry(obj);
if (entry == NULL) return; // No interest in this object.
- if (obj->IsJSObject()) {
+ known_references_.Clear();
+ if (obj->IsJSGlobalProxy()) {
+ // We need to reference JS global objects from snapshot's root.
+ // We use JSGlobalProxy because this is what embedder (e.g. browser)
+ // uses for the global object.
+ JSGlobalProxy* proxy = JSGlobalProxy::cast(obj);
+ SetRootShortcutReference(proxy->map()->prototype());
+ IndexedReferencesExtractor refs_extractor(this, obj, entry);
+ obj->Iterate(&refs_extractor);
+ } else if (obj->IsJSObject()) {
JSObject* js_obj = JSObject::cast(obj);
ExtractClosureReferences(js_obj, entry);
ExtractPropertyReferences(js_obj, entry);
@@ -1903,18 +1965,18 @@
obj, entry, Heap::prototype_symbol(), js_fun->prototype());
}
}
+ IndexedReferencesExtractor refs_extractor(
+ this, obj, entry, &known_references_);
+ obj->Iterate(&refs_extractor);
} else if (obj->IsString()) {
if (obj->IsConsString()) {
ConsString* cs = ConsString::cast(obj);
- SetInternalReference(obj, entry, "1", cs->first());
- SetInternalReference(obj, entry, "2", cs->second());
- }
- } else if (obj->IsCode() || obj->IsSharedFunctionInfo() ||
obj->IsScript()) {
+ SetInternalReference(obj, entry, 1, cs->first());
+ SetInternalReference(obj, entry, 2, cs->second());
+ }
+ } else {
IndexedReferencesExtractor refs_extractor(this, obj, entry);
obj->Iterate(&refs_extractor);
- } else if (obj->IsFixedArray()) {
- IndexedReferencesExtractor refs_extractor(this, obj, entry);
- obj->Iterate(&refs_extractor);
}
}
@@ -1967,8 +2029,17 @@
for (int i = 0; i < length; ++i) {
Object* k = dictionary->KeyAt(i);
if (dictionary->IsKey(k)) {
+ Object* target = dictionary->ValueAt(i);
SetPropertyReference(
- js_obj, entry, String::cast(k), dictionary->ValueAt(i));
+ js_obj, entry, String::cast(k), target);
+ // We assume that global objects can only have slow properties.
+ if (target->IsJSGlobalPropertyCell()) {
+ SetPropertyShortcutReference(js_obj,
+ entry,
+ String::cast(k),
+ JSGlobalPropertyCell::cast(
+ target)->value());
+ }
}
}
}
@@ -2024,6 +2095,7 @@
collection_->GetName(reference_name),
child_obj,
child_entry);
+ known_references_.Insert(child_obj);
}
}
@@ -2034,8 +2106,13 @@
Object* child_obj) {
HeapEntry* child_entry = GetEntry(child_obj);
if (child_entry != NULL) {
- filler_->SetElementReference(
- parent_obj, parent_entry, index, child_obj, child_entry);
+ filler_->SetIndexedReference(HeapGraphEdge::kElement,
+ parent_obj,
+ parent_entry,
+ index,
+ child_obj,
+ child_entry);
+ known_references_.Insert(child_obj);
}
}
@@ -2052,6 +2129,7 @@
reference_name,
child_obj,
child_entry);
+ known_references_.Insert(child_obj);
}
}
@@ -2068,8 +2146,25 @@
collection_->GetName(index),
child_obj,
child_entry);
+ known_references_.Insert(child_obj);
}
}
+
+
+void HeapSnapshotGenerator::SetHiddenReference(HeapObject* parent_obj,
+ HeapEntry* parent_entry,
+ int index,
+ Object* child_obj) {
+ HeapEntry* child_entry = GetEntry(child_obj);
+ if (child_entry != NULL) {
+ filler_->SetIndexedReference(HeapGraphEdge::kHidden,
+ parent_obj,
+ parent_entry,
+ index,
+ child_obj,
+ child_entry);
+ }
+}
void HeapSnapshotGenerator::SetPropertyReference(HeapObject* parent_obj,
@@ -2086,14 +2181,45 @@
collection_->GetName(reference_name),
child_obj,
child_entry);
+ known_references_.Insert(child_obj);
}
}
-void HeapSnapshotGenerator::SetRootReference(Object* child_obj) {
+void HeapSnapshotGenerator::SetPropertyShortcutReference(
+ HeapObject* parent_obj,
+ HeapEntry* parent_entry,
+ String* reference_name,
+ Object* child_obj) {
HeapEntry* child_entry = GetEntry(child_obj);
+ if (child_entry != NULL) {
+ filler_->SetNamedReference(HeapGraphEdge::kShortcut,
+ parent_obj,
+ parent_entry,
+ collection_->GetName(reference_name),
+ child_obj,
+ child_entry);
+ }
+}
+
+
+void HeapSnapshotGenerator::SetRootGcRootsReference() {
+ filler_->SetRootGcRootsReference();
+}
+
+
+void HeapSnapshotGenerator::SetRootShortcutReference(Object* child_obj) {
+ HeapEntry* child_entry = GetEntry(child_obj);
ASSERT(child_entry != NULL);
- filler_->SetRootReference(child_obj, child_entry);
+ filler_->SetRootShortcutReference(child_obj, child_entry);
+}
+
+
+void HeapSnapshotGenerator::SetGcRootsReference(Object* child_obj) {
+ HeapEntry* child_entry = GetEntry(child_obj);
+ if (child_entry != NULL) {
+ filler_->SetStrongRootReference(child_obj, child_entry);
+ }
}
@@ -2101,11 +2227,11 @@
raw_additions_root_ =
NewArray<char>(HeapEntry::EntriesSize(1, additions_count, 0));
additions_root()->Init(
- snapshot2_, HeapEntry::kInternal, "", 0, 0, additions_count, 0);
+ snapshot2_, HeapEntry::kHidden, "", 0, 0, additions_count, 0);
raw_deletions_root_ =
NewArray<char>(HeapEntry::EntriesSize(1, deletions_count, 0));
deletions_root()->Init(
- snapshot1_, HeapEntry::kInternal, "", 0, 0, deletions_count, 0);
+ snapshot1_, HeapEntry::kHidden, "", 0, 0, deletions_count, 0);
}
@@ -2324,7 +2450,8 @@
writer_->AddCharacter(',');
writer_->AddNumber(edge->type());
writer_->AddCharacter(',');
- if (edge->type() == HeapGraphEdge::kElement) {
+ if (edge->type() == HeapGraphEdge::kElement
+ || edge->type() == HeapGraphEdge::kHidden) {
writer_->AddNumber(edge->index());
} else {
writer_->AddNumber(GetStringId(edge->name()));
@@ -2355,13 +2482,13 @@
void HeapSnapshotJSONSerializer::SerializeNodes() {
- // The first (zero) item of nodes array is a JSON-ified object
- // describing node serialization layout.
- // We use a set of macros to improve readability.
+ // The first (zero) item of nodes array is an object describing node
+ // serialization layout. We use a set of macros to improve
+ // readability.
#define JSON_A(s) "["s"]"
#define JSON_O(s) "{"s"}"
-#define JSON_S(s) "\\\""s"\\\""
- writer_->AddString("\"" JSON_O(
+#define JSON_S(s) "\""s"\""
+ writer_->AddString(JSON_O(
JSON_S("fields") ":" JSON_A(
JSON_S("type")
"," JSON_S("name")
@@ -2371,7 +2498,7 @@
"," JSON_S("children"))
"," JSON_S("types") ":" JSON_A(
JSON_A(
- JSON_S("internal")
+ JSON_S("hidden")
"," JSON_S("array")
"," JSON_S("string")
"," JSON_S("object")
@@ -2393,9 +2520,11 @@
JSON_S("context")
"," JSON_S("element")
"," JSON_S("property")
- "," JSON_S("internal"))
+ "," JSON_S("internal")
+ "," JSON_S("hidden")
+ "," JSON_S("shortcut"))
"," JSON_S("string_or_number")
- "," JSON_S("node"))))) "\"");
+ "," JSON_S("node"))))));
#undef JSON_S
#undef JSON_O
#undef JSON_A
=======================================
--- /branches/bleeding_edge/src/profile-generator.h Mon Nov 8 07:18:12 2010
+++ /branches/bleeding_edge/src/profile-generator.h Thu Nov 18 02:38:25 2010
@@ -439,22 +439,26 @@
kContextVariable = v8::HeapGraphEdge::kContextVariable,
kElement = v8::HeapGraphEdge::kElement,
kProperty = v8::HeapGraphEdge::kProperty,
- kInternal = v8::HeapGraphEdge::kInternal
+ kInternal = v8::HeapGraphEdge::kInternal,
+ kHidden = v8::HeapGraphEdge::kHidden,
+ kShortcut = v8::HeapGraphEdge::kShortcut
};
HeapGraphEdge() { }
void Init(int child_index, Type type, const char* name, HeapEntry* to);
+ void Init(int child_index, Type type, int index, HeapEntry* to);
void Init(int child_index, int index, HeapEntry* to);
Type type() { return static_cast<Type>(type_); }
int index() {
- ASSERT(type_ == kElement);
+ ASSERT(type_ == kElement || type_ == kHidden);
return index_;
}
const char* name() {
ASSERT(type_ == kContextVariable
|| type_ == kProperty
- || type_ == kInternal);
+ || type_ == kInternal
+ || type_ == kShortcut);
return name_;
}
HeapEntry* to() { return to_; }
@@ -462,8 +466,8 @@
HeapEntry* From();
private:
- int child_index_ : 30;
- unsigned type_ : 2;
+ int child_index_ : 29;
+ unsigned type_ : 3;
union {
int index_;
const char* name_;
@@ -500,7 +504,7 @@
class HeapEntry BASE_EMBEDDED {
public:
enum Type {
- kInternal = v8::HeapGraphNode::kInternal,
+ kHidden = v8::HeapGraphNode::kHidden,
kArray = v8::HeapGraphNode::kArray,
kString = v8::HeapGraphNode::kString,
kObject = v8::HeapGraphNode::kObject,
@@ -547,8 +551,11 @@
void ApplyAndPaintAllReachable(Visitor* visitor);
void PaintAllReachable();
- void SetElementReference(
- int child_index, int index, HeapEntry* entry, int retainer_index);
+ void SetIndexedReference(HeapGraphEdge::Type type,
+ int child_index,
+ int index,
+ HeapEntry* entry,
+ int retainer_index);
void SetNamedReference(HeapGraphEdge::Type type,
int child_index,
const char* name,
@@ -668,12 +675,12 @@
const char* title() { return title_; }
unsigned uid() { return uid_; }
HeapEntry* root() { return root_entry_; }
+ HeapEntry* gc_roots() { return gc_roots_entry_; }
void AllocateEntries(
int entries_count, int children_count, int retainers_count);
HeapEntry* AddEntry(
HeapObject* object, int children_count, int retainers_count);
- bool WillAddEntry(HeapObject* object);
HeapEntry* AddEntry(HeapEntry::Type type,
const char* name,
uint64_t id,
@@ -693,7 +700,8 @@
void Print(int max_depth);
void PrintEntriesSize();
- static HeapObject *const kInternalRootObject;
+ static HeapObject* const kInternalRootObject;
+ static HeapObject* const kGcRootsObject;
private:
HeapEntry* AddEntry(HeapObject* object,
@@ -702,14 +710,13 @@
int children_count,
int retainers_count);
HeapEntry* GetNextEntryToInit();
- static int GetObjectSize(HeapObject* obj);
- static int CalculateNetworkSize(JSObject* obj);
HeapSnapshotsCollection* collection_;
Type type_;
const char* title_;
unsigned uid_;
HeapEntry* root_entry_;
+ HeapEntry* gc_roots_entry_;
char* raw_entries_;
List<HeapEntry*> entries_;
bool entries_sorted_;
@@ -733,6 +740,10 @@
uint64_t FindObject(Address addr);
void MoveObject(Address from, Address to);
+ static const uint64_t kInternalRootObjectId;
+ static const uint64_t kGcRootsObjectId;
+ static const uint64_t kFirstAvailableObjectId;
+
private:
struct EntryInfo {
explicit EntryInfo(uint64_t id) : id(id), accessed(true) { }
@@ -868,9 +879,6 @@
HeapEntriesMap();
~HeapEntriesMap();
- // Aliasing is used for skipping intermediate proxy objects, like
- // JSGlobalPropertyCell.
- void Alias(HeapObject* from, HeapObject* to);
HeapEntry* Map(HeapObject* object);
void Pair(HeapObject* object, HeapEntry* entry);
void CountReference(HeapObject* from, HeapObject* to,
@@ -894,41 +902,45 @@
int retainers_count;
};
- uint32_t Hash(HeapObject* object) {
+ static uint32_t Hash(HeapObject* object) {
return ComputeIntegerHash(
static_cast<uint32_t>(reinterpret_cast<uintptr_t>(object)));
}
static bool HeapObjectsMatch(void* key1, void* key2) { return key1 ==
key2; }
-
- bool IsAlias(void* ptr) {
- return reinterpret_cast<intptr_t>(ptr) & kAliasTag;
- }
- void* MakeAlias(void* ptr) {
- return reinterpret_cast<void*>(reinterpret_cast<intptr_t>(ptr) |
kAliasTag);
- }
- void* Unalias(void* ptr) {
- return reinterpret_cast<void*>(
- reinterpret_cast<intptr_t>(ptr) & (~kAliasTag));
- }
HashMap entries_;
int entries_count_;
int total_children_count_;
int total_retainers_count_;
- static const intptr_t kAliasTag = 1;
+ friend class HeapObjectsSet;
DISALLOW_COPY_AND_ASSIGN(HeapEntriesMap);
};
+class HeapObjectsSet {
+ public:
+ HeapObjectsSet();
+ void Clear();
+ bool Contains(Object* object);
+ void Insert(Object* obj);
+
+ private:
+ HashMap entries_;
+
+ DISALLOW_COPY_AND_ASSIGN(HeapObjectsSet);
+};
+
+
class HeapSnapshotGenerator {
public:
class SnapshotFillerInterface {
public:
virtual ~SnapshotFillerInterface() { }
virtual HeapEntry* AddEntry(HeapObject* obj) = 0;
- virtual void SetElementReference(HeapObject* parent_obj,
+ virtual void SetIndexedReference(HeapGraphEdge::Type type,
+ HeapObject* parent_obj,
HeapEntry* parent_entry,
int index,
Object* child_obj,
@@ -939,8 +951,11 @@
const char* reference_name,
Object* child_obj,
HeapEntry* child_entry) = 0;
- virtual void SetRootReference(Object* child_obj,
- HeapEntry* child_entry) = 0;
+ virtual void SetRootGcRootsReference() = 0;
+ virtual void SetRootShortcutReference(Object* child_obj,
+ HeapEntry* child_entry) = 0;
+ virtual void SetStrongRootReference(Object* child_obj,
+ HeapEntry* child_entry) = 0;
};
explicit HeapSnapshotGenerator(HeapSnapshot* snapshot);
@@ -969,19 +984,33 @@
HeapEntry* parent,
int index,
Object* child);
+ void SetHiddenReference(HeapObject* parent_obj,
+ HeapEntry* parent,
+ int index,
+ Object* child);
void SetPropertyReference(HeapObject* parent_obj,
HeapEntry* parent,
String* reference_name,
Object* child);
- void SetRootReference(Object* child);
+ void SetPropertyShortcutReference(HeapObject* parent_obj,
+ HeapEntry* parent,
+ String* reference_name,
+ Object* child);
+ void SetRootShortcutReference(Object* child);
+ void SetRootGcRootsReference();
+ void SetGcRootsReference(Object* child);
HeapSnapshot* snapshot_;
HeapSnapshotsCollection* collection_;
// Mapping from HeapObject* pointers to HeapEntry* pointers.
HeapEntriesMap entries_;
SnapshotFillerInterface* filler_;
+ // Used during references extraction to mark heap objects that
+ // are references via non-hidden properties.
+ HeapObjectsSet known_references_;
friend class IndexedReferencesExtractor;
+ friend class RootsReferencesExtractor;
DISALLOW_COPY_AND_ASSIGN(HeapSnapshotGenerator);
};
=======================================
--- /branches/bleeding_edge/test/cctest/test-heap-profiler.cc Mon Nov 8
07:18:12 2010
+++ /branches/bleeding_edge/test/cctest/test-heap-profiler.cc Thu Nov 18
02:38:25 2010
@@ -411,8 +411,12 @@
static const v8::HeapGraphNode* GetGlobalObject(
const v8::HeapSnapshot* snapshot) {
- CHECK_EQ(1, snapshot->GetRoot()->GetChildrenCount());
- return snapshot->GetRoot()->GetChild(0)->GetToNode();
+ CHECK_EQ(2, snapshot->GetRoot()->GetChildrenCount());
+ const v8::HeapGraphNode* global_obj =
+ snapshot->GetRoot()->GetChild(0)->GetToNode();
+ CHECK_EQ("Object", const_cast<i::HeapEntry*>(
+ reinterpret_cast<const i::HeapEntry*>(global_obj))->name());
+ return global_obj;
}
@@ -479,21 +483,24 @@
// Verify, that JS global object of env2 has '..2' properties.
const v8::HeapGraphNode* a2_node =
- GetProperty(global_env2, v8::HeapGraphEdge::kProperty, "a2");
+ GetProperty(global_env2, v8::HeapGraphEdge::kShortcut, "a2");
CHECK_NE(NULL, a2_node);
CHECK_NE(
- NULL, GetProperty(global_env2,
v8::HeapGraphEdge::kProperty, "b2_1"));
+ NULL, GetProperty(global_env2,
v8::HeapGraphEdge::kShortcut, "b2_1"));
CHECK_NE(
- NULL, GetProperty(global_env2,
v8::HeapGraphEdge::kProperty, "b2_2"));
- CHECK_NE(NULL, GetProperty(global_env2,
v8::HeapGraphEdge::kProperty, "c2"));
-
- // Verify that anything related to '[ABC]1' is not reachable.
+ NULL, GetProperty(global_env2,
v8::HeapGraphEdge::kShortcut, "b2_2"));
+ CHECK_NE(NULL, GetProperty(global_env2,
v8::HeapGraphEdge::kShortcut, "c2"));
+
NamedEntriesDetector det;
i_snapshot_env2->IterateEntries(&det);
CHECK(det.has_A2);
CHECK(det.has_B2);
CHECK(det.has_C2);
+ /*
+ // Currently disabled. Too many retaining paths emerge, need to
+ // reduce the amount.
+
// Verify 'a2' object retainers. They are:
// - (global object).a2
// - c2.x1, c2.x2, c2[1]
@@ -538,6 +545,7 @@
CHECK(has_c2_1_ref);
CHECK(has_b2_1_x_ref);
CHECK(has_b2_2_x_ref);
+ */
}
@@ -550,12 +558,12 @@
CompileRun(
"function X(a, b) { this.a = a; this.b = b; }\n"
"x = new X(new X(), new X());\n"
- "x.a.a = x.b;");
+ "(function() { x.a.a = x.b; })();");
const v8::HeapSnapshot* snapshot =
v8::HeapProfiler::TakeSnapshot(v8::String::New("sizes"));
const v8::HeapGraphNode* global = GetGlobalObject(snapshot);
const v8::HeapGraphNode* x =
- GetProperty(global, v8::HeapGraphEdge::kProperty, "x");
+ GetProperty(global, v8::HeapGraphEdge::kShortcut, "x");
CHECK_NE(NULL, x);
const v8::HeapGraphNode* x_prototype =
GetProperty(x, v8::HeapGraphEdge::kProperty, "__proto__");
@@ -566,21 +574,9 @@
const v8::HeapGraphNode* x2 =
GetProperty(x, v8::HeapGraphEdge::kProperty, "b");
CHECK_NE(NULL, x2);
- CHECK_EQ(
- x->GetSelfSize() * 3,
- x->GetReachableSize() - x_prototype->GetReachableSize());
- CHECK_EQ(
- x->GetSelfSize() * 3, x->GetRetainedSize());
- CHECK_EQ(
- x1->GetSelfSize() * 2,
- x1->GetReachableSize() - x_prototype->GetReachableSize());
- CHECK_EQ(
- x1->GetSelfSize(), x1->GetRetainedSize());
- CHECK_EQ(
- x2->GetSelfSize(),
- x2->GetReachableSize() - x_prototype->GetReachableSize());
- CHECK_EQ(
- x2->GetSelfSize(), x2->GetRetainedSize());
+ CHECK_EQ(x->GetSelfSize() * 3, x->GetRetainedSize());
+ CHECK_EQ(x1->GetSelfSize(), x1->GetRetainedSize());
+ CHECK_EQ(x2->GetSelfSize(), x2->GetRetainedSize());
}
@@ -622,15 +618,15 @@
const v8::HeapGraphNode* global = GetGlobalObject(snapshot);
const v8::HeapGraphNode* compiled =
- GetProperty(global, v8::HeapGraphEdge::kProperty, "compiled");
+ GetProperty(global, v8::HeapGraphEdge::kShortcut, "compiled");
CHECK_NE(NULL, compiled);
CHECK_EQ(v8::HeapGraphNode::kClosure, compiled->GetType());
const v8::HeapGraphNode* lazy =
- GetProperty(global, v8::HeapGraphEdge::kProperty, "lazy");
+ GetProperty(global, v8::HeapGraphEdge::kShortcut, "lazy");
CHECK_NE(NULL, lazy);
CHECK_EQ(v8::HeapGraphNode::kClosure, lazy->GetType());
const v8::HeapGraphNode* anonymous =
- GetProperty(global, v8::HeapGraphEdge::kProperty, "anonymous");
+ GetProperty(global, v8::HeapGraphEdge::kShortcut, "anonymous");
CHECK_NE(NULL, anonymous);
CHECK_EQ(v8::HeapGraphNode::kClosure, anonymous->GetType());
v8::String::AsciiValue anonymous_name(anonymous->GetName());
@@ -682,9 +678,9 @@
const v8::HeapSnapshot* snapshot =
v8::HeapProfiler::TakeSnapshot(v8::String::New("numbers"));
const v8::HeapGraphNode* global = GetGlobalObject(snapshot);
- CHECK_EQ(NULL, GetProperty(global, v8::HeapGraphEdge::kProperty, "a"));
+ CHECK_EQ(NULL, GetProperty(global, v8::HeapGraphEdge::kShortcut, "a"));
const v8::HeapGraphNode* b =
- GetProperty(global, v8::HeapGraphEdge::kProperty, "b");
+ GetProperty(global, v8::HeapGraphEdge::kShortcut, "b");
CHECK_NE(NULL, b);
CHECK_EQ(v8::HeapGraphNode::kHeapNumber, b->GetType());
}
@@ -808,12 +804,12 @@
if (node->GetType() == v8::HeapGraphNode::kObject) {
v8::String::AsciiValue node_name(node->GetName());
if (strcmp(*node_name, "A2") == 0) {
- CHECK(IsNodeRetainedAs(node, v8::HeapGraphEdge::kProperty, "a"));
+ CHECK(IsNodeRetainedAs(node, v8::HeapGraphEdge::kShortcut, "a"));
CHECK(!found_A);
found_A = true;
s1_A_id = node->GetId();
} else if (strcmp(*node_name, "B") == 0) {
- CHECK(IsNodeRetainedAs(node, v8::HeapGraphEdge::kProperty, "b2"));
+ CHECK(IsNodeRetainedAs(node, v8::HeapGraphEdge::kShortcut, "b2"));
CHECK(!found_B);
found_B = true;
}
@@ -832,7 +828,7 @@
if (node->GetType() == v8::HeapGraphNode::kObject) {
v8::String::AsciiValue node_name(node->GetName());
if (strcmp(*node_name, "A") == 0) {
- CHECK(IsNodeRetainedAs(node, v8::HeapGraphEdge::kProperty, "a"));
+ CHECK(IsNodeRetainedAs(node, v8::HeapGraphEdge::kShortcut, "a"));
CHECK(!found_A_del);
found_A_del = true;
s2_A_id = node->GetId();
@@ -856,37 +852,6 @@
const v8::HeapGraphNode* root2 = snapshot->GetRoot();
CHECK_EQ(root1, root2);
}
-
-
-namespace v8 {
-namespace internal {
-
-class HeapSnapshotTester {
- public:
- static int CalculateNetworkSize(JSObject* obj) {
- return HeapSnapshot::CalculateNetworkSize(obj);
- }
-};
-
-} } // namespace v8::internal
-
-// http://code.google.com/p/v8/issues/detail?id=822
-// Trying to call CalculateNetworkSize on an object with elements set
-// to non-FixedArray may cause an assertion error in debug builds.
-TEST(Issue822) {
- v8::HandleScope scope;
- LocalContext context;
- const int kElementCount = 260;
- uint8_t* pixel_data = reinterpret_cast<uint8_t*>(malloc(kElementCount));
- i::Handle<i::PixelArray> pixels =
i::Factory::NewPixelArray(kElementCount,
- pixel_data);
- v8::Handle<v8::Object> obj = v8::Object::New();
- // Set the elements to be the pixels.
- obj->SetIndexedPropertiesToPixelData(pixel_data, kElementCount);
- i::Handle<i::JSObject> jsobj = v8::Utils::OpenHandle(*obj);
- // This call must not cause an assertion error in debug builds.
- i::HeapSnapshotTester::CalculateNetworkSize(*jsobj);
-}
static const v8::HeapGraphNode* GetChild(
@@ -932,13 +897,13 @@
v8::HeapProfiler::TakeSnapshot(
v8::String::New("agg"), v8::HeapSnapshot::kAggregated);
const v8::HeapGraphNode* strings = GetChild(snapshot->GetRoot(),
- v8::HeapGraphNode::kInternal,
+ v8::HeapGraphNode::kHidden,
"STRING_TYPE");
CHECK_NE(NULL, strings);
CHECK_NE(0, strings->GetSelfSize());
CHECK_NE(0, strings->GetInstancesCount());
const v8::HeapGraphNode* maps = GetChild(snapshot->GetRoot(),
- v8::HeapGraphNode::kInternal,
+ v8::HeapGraphNode::kHidden,
"MAP_TYPE");
CHECK_NE(NULL, maps);
CHECK_NE(0, maps->GetSelfSize());
@@ -1073,13 +1038,9 @@
CHECK(parsed_snapshot->Has(v8::String::New("nodes")));
CHECK(parsed_snapshot->Has(v8::String::New("strings")));
- // Verify that nodes meta-info is valid JSON.
- v8::Local<v8::Value> nodes_meta_parse_result = CompileRun(
- "var parsed_meta = JSON.parse(parsed.nodes[0]); true;");
- CHECK(!nodes_meta_parse_result.IsEmpty());
-
// Get node and edge "member" offsets.
v8::Local<v8::Value> meta_analysis_result = CompileRun(
+ "var parsed_meta = parsed.nodes[0];\n"
"var children_count_offset ="
" parsed_meta.fields.indexOf('children_count');\n"
"var children_offset ="
@@ -1094,19 +1055,21 @@
"var child_to_node_offset ="
" children_meta.fields.indexOf('to_node');\n"
"var property_type ="
- " children_meta.types[child_type_offset].indexOf('property');");
+ " children_meta.types[child_type_offset].indexOf('property');\n"
+ "var shortcut_type ="
+ " children_meta.types[child_type_offset].indexOf('shortcut');");
CHECK(!meta_analysis_result.IsEmpty());
// A helper function for processing encoded nodes.
CompileRun(
- "function GetChildPosByProperty(pos, prop_name) {\n"
+ "function GetChildPosByProperty(pos, prop_name, prop_type) {\n"
" var nodes = parsed.nodes;\n"
" var strings = parsed.strings;\n"
" for (var i = 0,\n"
" count = nodes[pos + children_count_offset] *
child_fields_count;\n"
" i < count; i += child_fields_count) {\n"
" var child_pos = pos + children_offset + i;\n"
- " if (nodes[child_pos + child_type_offset] === property_type\n"
+ " if (nodes[child_pos + child_type_offset] === prop_type\n"
" && strings[nodes[child_pos + child_name_offset]] ===
prop_name)\n"
" return nodes[child_pos + child_to_node_offset];\n"
" }\n"
@@ -1117,9 +1080,10 @@
"GetChildPosByProperty(\n"
" GetChildPosByProperty(\n"
" GetChildPosByProperty("
- " parsed.nodes[1 + children_offset +
child_to_node_offset],\"b\"),\n"
- " \"x\"),"
- " \"s\")");
+ " parsed.nodes[1 + children_offset + child_to_node_offset],"
+ " \"b\",shortcut_type),\n"
+ " \"x\", property_type),"
+ " \"s\", property_type)");
CHECK(!string_obj_pos_val.IsEmpty());
int string_obj_pos =
static_cast<int>(string_obj_pos_val->ToNumber()->Value());
--
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