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* Experiment: Change the way StringData is allocated in the code, experimentally.

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This commit is contained in:
Robert MacGregor 2022-06-08 11:27:16 -04:00
parent 09272e0e63
commit 2cdfe70e50
1 changed files with 86 additions and 30 deletions
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116
Engine/source/core/util/str.cpp
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@ -254,13 +254,14 @@ class String::StringData : protected StringDataImpl
public:
///
StringData( const StringChar* data, bool interned = false )
StringData( const StringChar* data, U32 length, bool interned = false )
{
mRefCount = 1;
mNumChars = U32_MAX;
mHashCase = U32_MAX;
mHashNoCase = U32_MAX;
mUTF16 = NULL;
mLength = length;
mIsInterned = interned;
// mLength is initialized by operator new()
@ -280,13 +281,33 @@ class String::StringData : protected StringDataImpl
~StringData()
{
AssertFatal( mRefCount == 0, "StringData::~StringData invalid refcount" );
if( mUTF16 )
delete [] mUTF16;
}
static StringData* Create(const StringChar* data, U32 len, bool interned = false)
{
void* memory = dMalloc(sizeof(StringData) + sizeof(StringChar) * len);
StringData* result = new(memory) StringData(data, len, interned);
return result;
}
static StringData* Create(const StringChar* data, U32 len, DataChunker& chunker, bool interned = false)
{
// StringData *str = static_cast<StringData*>( chunker.alloc( size + len * sizeof(StringChar) ) );
void* operator new(size_t size, U32 len);
void* operator new( size_t size, U32 len, DataChunker& chunker );
void operator delete(void *);
// str->mLength = len;
void* memory = chunker.alloc( sizeof(StringData) + len * sizeof(StringChar)); //dMalloc(sizeof(StringData) + sizeof(Stringchar) * len);
StringData* result = new(memory) StringData(data, len, interned);
return result;
}
// void* operator new(size_t size, U32 len);
// void* operator new( size_t size, U32 len, DataChunker& chunker );
// void operator delete(void *);
bool isShared() const
{
@ -492,6 +513,7 @@ DefineEngineFunction( dumpStringMemStats, void, (), , "()"
//-----------------------------------------------------------------------------
/*
void* String::StringData::operator new( size_t size, U32 len )
{
AssertFatal( len != 0, "String::StringData::operator new() - string must not be empty" );
@ -506,7 +528,9 @@ void* String::StringData::operator new( size_t size, U32 len )
return str;
}
*/
/*
void String::StringData::operator delete(void *ptr)
{
StringData* sub = static_cast<StringData *>(ptr);
@ -519,7 +543,9 @@ void String::StringData::operator delete(void *ptr)
dFree( ptr );
}
*/
/*
void* String::StringData::operator new( size_t size, U32 len, DataChunker& chunker )
{
AssertFatal( len != 0, "String::StringData::operator new() - string must not be empty" );
@ -534,6 +560,7 @@ void* String::StringData::operator new( size_t size, U32 len, DataChunker& chunk
return str;
}
*/
//-----------------------------------------------------------------------------
@ -556,7 +583,8 @@ String::String(const StringChar *str)
if( str && *str )
{
U32 len = dStrlen(str);
_string = new ( len ) StringData( str );
// _string = new ( len ) StringData( str );
_string = StringData::Create(str, len);
}
else
_string = StringData::Empty();
@ -567,7 +595,7 @@ String::String(const StringChar *str, SizeType len)
PROFILE_SCOPE(String_char_len_constructor);
if (str && *str && len!=0)
{
_string = new ( len ) StringData( str );
_string = StringData::Create(str, len);
}
else
_string = StringData::Empty();
@ -581,7 +609,7 @@ String::String(const UTF16 *str)
{
UTF8* utf8 = createUTF8string( str );
U32 len = dStrlen( utf8 );
_string = new ( len ) StringData( utf8 );
_string = StringData::Create(utf8, len);
delete [] utf8;
}
else
@ -619,7 +647,9 @@ String String::intern() const
// Create new.
StringData* data = new ( length(), sInternTable->mChunker ) StringData( c_str(), true );
StringData* data = StringData::Create(c_str(), length(), sInternTable->mChunker);
//StringData* data = new ( length(), sInternTable->mChunker ) StringData( c_str(), true );
iter = sInternTable->insertUnique( data, data );
return ( *iter ).value;
@ -710,7 +740,8 @@ String& String::operator=(StringChar c)
{
_string->release();
_string = new ( 2 ) StringData( 0 );
//_string = new ( 2 ) StringData( 0 );
_string = StringData::Create(NULL, 2);
_string->utf8()[ 0 ] = c;
_string->utf8()[ 1 ] = '\0';
@ -721,8 +752,9 @@ String& String::operator+=(StringChar c)
{
// Append the given string into a new string
U32 len = _string->getLength();
StringData* sub = new ( len + 1 ) StringData( NULL );
// StringData* sub = new ( len + 1 ) StringData( NULL );
StringData* sub = StringData::Create(NULL, len + 1);
copy( sub->utf8(), _string->utf8(), len );
sub->utf8()[len] = c;
sub->utf8()[len+1] = 0;
@ -748,7 +780,8 @@ String& String::operator=(const StringChar *str)
if (str && *str)
{
U32 len = dStrlen(str);
_string = new ( len ) StringData( str );
// _string = new ( len ) StringData( str );
_string = StringData::Create(str, len);
}
else
_string = StringData::Empty();
@ -782,7 +815,8 @@ String& String::operator+=(const StringChar *src)
sub = StringData::Empty();
else
{
sub = new ( newlen ) StringData( NULL );
// sub = new ( newlen ) StringData( NULL );
sub = StringData::Create(NULL, newlen);
copy(sub->utf8(),_string->utf8(),lena);
copy(sub->utf8() + lena,src,lenb + 1);
@ -809,7 +843,8 @@ String& String::operator+=(const String &src)
sub = StringData::Empty();
else
{
sub = new ( newlen ) StringData( NULL );
//sub = new ( newlen ) StringData( NULL );
sub = StringData::Create(NULL, newlen);
copy(sub->utf8(),_string->utf8(),lena);
copy(sub->utf8() + lena,src._string->utf8(),lenb + 1);
@ -835,7 +870,8 @@ String operator+(const String &a, const String &b)
U32 lena = a.length();
U32 lenb = b.length();
String::StringData *sub = new ( lena + lenb ) String::StringData( NULL );
//String::StringData *sub = new ( lena + lenb ) String::StringData( NULL );
String::StringData* sub = String::StringData::Create(NULL, lena + lenb);
String::copy(sub->utf8(),a._string->utf8(),lena);
String::copy(sub->utf8() + lena,b._string->utf8(),lenb + 1);
@ -848,7 +884,8 @@ String operator+(const String &a, StringChar c)
//PROFILE_SCOPE( String_String_plus_Char );
U32 lena = a.length();
String::StringData *sub = new ( lena + 1 ) String::StringData( NULL );
// String::StringData *sub = new ( lena + 1 ) String::StringData( NULL );
String::StringData* sub = String::StringData::Create(NULL, lena + 1);
String::copy(sub->utf8(),a._string->utf8(),lena);
@ -863,7 +900,8 @@ String operator+(StringChar c, const String &a)
//PROFILE_SCOPE( String_Char_plus_String );
U32 lena = a.length();
String::StringData *sub = new ( lena + 1 ) String::StringData( NULL );
// String::StringData *sub = new ( lena + 1 ) String::StringData( NULL );
String::StringData* sub = String::StringData::Create(NULL, lena + 1);
String::copy(sub->utf8() + 1,a._string->utf8(),lena + 1);
sub->utf8()[0] = c;
@ -886,7 +924,8 @@ String operator+(const String &a, const StringChar *b)
if( !lenb )
return a;
String::StringData *sub = new ( lena + lenb ) String::StringData( NULL );
// String::StringData *sub = new ( lena + lenb ) String::StringData( NULL );
String::StringData* sub = String::StringData::Create(NULL, lena + lenb);
String::copy(sub->utf8(),a._string->utf8(),lena);
String::copy(sub->utf8() + lena,b,lenb + 1);
@ -908,7 +947,8 @@ String operator+(const StringChar *a, const String &b)
U32 lenb = b.length();
String::StringData* sub = new ( lena + lenb ) String::StringData( NULL );
//String::StringData* sub = new ( lena + lenb ) String::StringData( NULL );
String::StringData* sub = String::StringData::Create(NULL, lena + lenb);
String::copy(sub->utf8(),a,lena);
String::copy(sub->utf8() + lena,b._string->utf8(),lenb + 1);
@ -1117,7 +1157,8 @@ String& String::insert(SizeType pos, const StringChar *str, SizeType len)
sub = StringData::Empty();
else
{
sub = new ( newlen ) StringData( NULL );
// sub = new ( newlen ) StringData( NULL );
sub = StringData::Create(NULL, newlen);
String::copy(sub->utf8(),_string->utf8(),pos);
String::copy(sub->utf8() + pos,str,len);
@ -1146,7 +1187,8 @@ String& String::erase(SizeType pos, SizeType len)
sub = StringData::Empty();
else
{
sub = new ( newlen ) StringData( NULL );
// sub = new ( newlen ) StringData( NULL );
sub = StringData::Create(NULL, newlen);
if (pos > 0)
String::copy(sub->utf8(),_string->utf8(),pos);
@ -1176,7 +1218,8 @@ String& String::replace(SizeType pos, SizeType len, const StringChar *str)
sub = StringData::Empty();
else
{
sub = new ( newlen ) StringData( NULL );
// sub = new ( newlen ) StringData( NULL );
sub = StringData::Create(NULL, newlen);
String::copy(sub->utf8(),_string->utf8(), pos);
String::copy(sub->utf8() + pos,str,rlen);
@ -1207,7 +1250,9 @@ String& String::replace( StringChar c1, StringChar c2 )
{
if( !foundReplacement )
{
sub = new ( length() ) StringData( _string->utf8() );
//sub = new ( length() ) StringData( _string->utf8() );
sub = StringData::Create(_string->utf8(), length());
c = &sub->utf8()[ c - _string->utf8() ];
foundReplacement = true;
}
@ -1261,7 +1306,8 @@ String &String::replace(const String &s1, const String &s2)
sub = StringData::Empty();
else
{
sub = new (newSize - 1 ) StringData( NULL );
//sub = new (newSize - 1 ) StringData( NULL );
sub = StringData::Create(NULL, newSize - 1);
// Now assemble the new string from the pieces of the old...
@ -1327,7 +1373,9 @@ String String::substr(SizeType pos, SizeType len) const
if( !len )
sub = StringData::Empty();
else
sub = new ( len ) StringData( _string->utf8() + pos );
sub = StringData::Create(_string->utf8() + pos, len);
//sub = new ( len ) StringData( _string->utf8() + pos );
return sub;
}
@ -1356,7 +1404,9 @@ String String::trim() const
if( !len )
sub = StringData::Empty();
else
sub = new ( len ) StringData( start );
sub = StringData::Create(start, len);
//sub = new ( len ) StringData( start );
return sub;
}
@ -1573,7 +1623,8 @@ String String::VToString(const char* str, va_list args)
sub = StringData::Empty();
else
{
sub = new ( len ) StringData( NULL );
//sub = new ( len ) StringData( NULL );
sub = StringData::Create(NULL, len);
format.copy( sub->utf8() );
sub->utf8()[ len ] = 0;
@ -1590,7 +1641,8 @@ String String::SpanToString(const char *start, const char *end)
AssertFatal( end > start, "Invalid arguments to String::SpanToString - end is before start" );
U32 len = U32(end - start);
StringData* sub = new ( len ) StringData( start );
//StringData* sub = new ( len ) StringData( start );
String::StringData* sub = StringData::Create(start, len);
return sub;
}
@ -1600,7 +1652,9 @@ String String::ToLower(const String &string)
if ( string.isEmpty() )
return String();
StringData* sub = new ( string.length() ) StringData( string );
//StringData* sub = new ( string.length() ) StringData( string );
String::StringData* sub = StringData::Create(string, string.length());
dStrlwr( sub->utf8() );
return sub;
@ -1611,7 +1665,9 @@ String String::ToUpper(const String &string)
if ( string.isEmpty() )
return String();
StringData* sub = new ( string.length() ) StringData( string );
// StringData* sub = new ( string.length() ) StringData( string );
String::StringData* sub = StringData::Create(string, string.length());
dStrupr( sub->utf8() );
return sub;