v8::internal::StringsStorage Class Reference

#include <profile-generator.h>

Collaboration diagram for v8::internal::StringsStorage:

Public Member Functions
	StringsStorage (Heap *heap)
	~StringsStorage ()
const char *	GetCopy (const char *src)
const char *	GetFormatted (const char *format,...)
const char *	GetVFormatted (const char *format, va_list args)
const char *	GetName (Name *name)
const char *	GetName (int index)
const char *	GetFunctionName (Name *name)
const char *	GetFunctionName (const char *name)
size_t	GetUsedMemorySize () const

Private Member Functions
const char *	AddOrDisposeString (char *str, int len)
HashMap::Entry *	GetEntry (const char *str, int len)
	DISALLOW_COPY_AND_ASSIGN (StringsStorage)

Static Private Member Functions
static bool	StringsMatch (void *key1, void *key2)

Private Attributes
uint32_t	hash_seed_
HashMap	names_

Static Private Attributes
static const int	kMaxNameSize = 1024

Detailed Description

Definition at line 19 of file profile-generator.h.

Constructor & Destructor Documentation

StringsStorage()

v8::internal::StringsStorage::StringsStorage ( Heap *  heap )

explicit

Definition at line 27 of file profile-generator.cc.

    : hash_seed_(heap->HashSeed()), names_(StringsMatch) {
}

~StringsStorage()

v8::internal::StringsStorage::~StringsStorage

(

)

Definition at line 32 of file profile-generator.cc.

                                {
  for (HashMap::Entry* p = names_.Start();
       p != NULL;
       p = names_.Next(p)) {
    DeleteArray(reinterpret_cast<const char*>(p->value));
  }
}

References v8::internal::DeleteArray(), names_, v8::internal::TemplateHashMapImpl< AllocationPolicy >::Next(), NULL, and v8::internal::TemplateHashMapImpl< AllocationPolicy >::Start().

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Member Function Documentation

AddOrDisposeString()

const char * v8::internal::StringsStorage::AddOrDisposeString ( char *  str, int  len  )

private

Definition at line 64 of file profile-generator.cc.

                                                                 {
  HashMap::Entry* entry = GetEntry(str, len);
  if (entry->value == NULL) {
    // New entry added.
    entry->key = str;
    entry->value = str;
  } else {
    DeleteArray(str);
  }
  return reinterpret_cast<const char*>(entry->value);
}

References v8::internal::DeleteArray(), GetEntry(), and NULL.

Referenced by GetName(), and GetVFormatted().

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DISALLOW_COPY_AND_ASSIGN()

v8::internal::StringsStorage::DISALLOW_COPY_AND_ASSIGN ( StringsStorage  )

private

GetCopy()

const char * v8::internal::StringsStorage::GetCopy

(

const char *

src

)

Definition at line 41 of file profile-generator.cc.

                                                   {
  int len = static_cast<int>(strlen(src));
  HashMap::Entry* entry = GetEntry(src, len);
  if (entry->value == NULL) {
    Vector<char> dst = Vector<char>::New(len + 1);
    StrNCpy(dst, src, len);
    dst[len] = '\0';
    entry->key = dst.start();
    entry->value = entry->key;
  }
  return reinterpret_cast<const char*>(entry->value);
}

References GetEntry(), v8::internal::Vector< T >::New(), NULL, v8::internal::Vector< T >::start(), and v8::internal::StrNCpy().

Referenced by v8::internal::BasicHeapEntriesAllocator::AllocateEntry(), v8::internal::NativeObjectsExplorer::FindOrAddGroupInfo(), GetFunctionName(), and GetVFormatted().

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GetEntry()

HashMap::Entry * v8::internal::StringsStorage::GetEntry ( const char *  str, int  len  )

private

Definition at line 129 of file profile-generator.cc.

                                                               {
  uint32_t hash = StringHasher::HashSequentialString(str, len, hash_seed_);
  return names_.Lookup(const_cast<char*>(str), hash, true);
}

References hash_seed_, v8::internal::StringHasher::HashSequentialString(), v8::internal::TemplateHashMapImpl< AllocationPolicy >::Lookup(), and names_.

Referenced by AddOrDisposeString(), and GetCopy().

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GetFormatted()

const char * v8::internal::StringsStorage::GetFormatted	(	const char *	format,
			...
	)

Definition at line 55 of file profile-generator.cc.

                                                                {
  va_list args;
  va_start(args, format);
  const char* result = GetVFormatted(format, args);
  va_end(args);
  return result;
}

References GetVFormatted().

Referenced by v8::internal::V8HeapExplorer::AddEntry(), v8::internal::BasicHeapEntriesAllocator::AllocateEntry(), v8::internal::V8HeapExplorer::ExtractClosureReferences(), v8::internal::V8HeapExplorer::ExtractSharedFunctionInfoReferences(), GetName(), v8::internal::V8HeapExplorer::SetPropertyReference(), v8::internal::V8HeapExplorer::SetWeakReference(), v8::internal::V8HeapExplorer::TagBuiltinCodeObject(), and v8::internal::V8HeapExplorer::TagCodeObject().

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GetFunctionName() [1/2]

const char * v8::internal::StringsStorage::GetFunctionName

(

const char *

name

)

Definition at line 114 of file profile-generator.cc.

                                                            {
  return GetCopy(name);
}

References GetCopy(), and name.

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GetFunctionName() [2/2]

const char * v8::internal::StringsStorage::GetFunctionName

(

Name *

name

)

Definition at line 109 of file profile-generator.cc.

                                                      {
  return GetName(name);
}

References GetName(), and name.

Referenced by v8::internal::AllocationTracker::AddFunctionInfo(), and v8::internal::CpuProfilesCollection::GetFunctionName().

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GetName() [1/2]

const char * v8::internal::StringsStorage::GetName

(

int

index

)

Definition at line 104 of file profile-generator.cc.

                                             {
  return GetFormatted("%d", index);
}

References GetFormatted().

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GetName() [2/2]

const char * v8::internal::StringsStorage::GetName

(

Name *

name

)

Definition at line 88 of file profile-generator.cc.

                                              {
  if (name->IsString()) {
    String* str = String::cast(name);
    int length = Min(kMaxNameSize, str->length());
    int actual_length = 0;
    SmartArrayPointer<char> data =
        str->ToCString(DISALLOW_NULLS, ROBUST_STRING_TRAVERSAL, 0, length,
                       &actual_length);
    return AddOrDisposeString(data.Detach(), actual_length);
  } else if (name->IsSymbol()) {
    return "<symbol>";
  }
  return "";
}

References AddOrDisposeString(), v8::internal::SmartPointerBase< Deallocator, T >::Detach(), v8::internal::DISALLOW_NULLS, kMaxNameSize, v8::internal::String::length(), v8::internal::Min(), name, v8::internal::ROBUST_STRING_TRAVERSAL, and v8::internal::String::ToCString().

Referenced by v8::internal::V8HeapExplorer::AddEntry(), v8::internal::AllocationTracker::AddFunctionInfo(), v8::internal::V8HeapExplorer::ExtractSharedFunctionInfoReferences(), GetFunctionName(), v8::internal::CpuProfilesCollection::GetName(), v8::internal::V8HeapExplorer::SetContextReference(), v8::internal::V8HeapExplorer::SetInternalReference(), v8::internal::SnapshotFiller::SetNamedAutoIndexReference(), and v8::internal::V8HeapExplorer::SetPropertyReference().

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GetUsedMemorySize()

size_t v8::internal::StringsStorage::GetUsedMemorySize

(

)

const

Definition at line 119 of file profile-generator.cc.

                                               {
  size_t size = sizeof(*this);
  size += sizeof(HashMap::Entry) * names_.capacity();
  for (HashMap::Entry* p = names_.Start(); p != NULL; p = names_.Next(p)) {
    size += strlen(reinterpret_cast<const char*>(p->value)) + 1;
  }
  return size;
}

References v8::internal::TemplateHashMapImpl< AllocationPolicy >::capacity(), names_, v8::internal::TemplateHashMapImpl< AllocationPolicy >::Next(), NULL, size, and v8::internal::TemplateHashMapImpl< AllocationPolicy >::Start().

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GetVFormatted()

const char * v8::internal::StringsStorage::GetVFormatted	(	const char *	format,
		va_list	args
	)

Definition at line 77 of file profile-generator.cc.

                                                                          {
  Vector<char> str = Vector<char>::New(1024);
  int len = VSNPrintF(str, format, args);
  if (len == -1) {
    DeleteArray(str.start());
    return GetCopy(format);
  }
  return AddOrDisposeString(str.start(), len);
}

References AddOrDisposeString(), v8::internal::DeleteArray(), GetCopy(), v8::internal::Vector< T >::New(), v8::internal::Vector< T >::start(), and v8::internal::VSNPrintF().

Referenced by GetFormatted().

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StringsMatch()

bool v8::internal::StringsStorage::StringsMatch ( void *  key1, void *  key2  )

staticprivate

Definition at line 21 of file profile-generator.cc.

                                                        {
  return strcmp(reinterpret_cast<char*>(key1),
                reinterpret_cast<char*>(key2)) == 0;
}

Member Data Documentation

hash_seed_

uint32_t v8::internal::StringsStorage::hash_seed_

private

Definition at line 40 of file profile-generator.h.

Referenced by GetEntry().

kMaxNameSize

const int v8::internal::StringsStorage::kMaxNameSize = 1024

staticprivate

Definition at line 34 of file profile-generator.h.

Referenced by GetName().

names_

HashMap v8::internal::StringsStorage::names_

private

Definition at line 41 of file profile-generator.h.

Referenced by GetEntry(), GetUsedMemorySize(), and ~StringsStorage().

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

• /mnt/V8SourceCode/src/profile-generator.h
• /mnt/V8SourceCode/src/profile-generator.cc