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Add unpaged memory mode to TQString and TQLineEdit

Browse Source 
Fix designer build warnings
pull/2/head
Timothy Pearson 11 years ago
parent ed9739fcff
commit d09860faff
7 changed files with 153 additions and 14 deletions
Show Stats Download Patch File Download Diff File

79
src/tools/qstring.cpp
Unescape View File

@ -65,10 +65,18 @@
#if defined(Q_WS_WIN)
#include "qt_windows.h"
#endif
#if defined(Q_OS_LINUX)
#include <sys/mman.h>
#endif
#if !defined( QT_NO_COMPONENT ) && !defined( QT_LITE_COMPONENT )
#include "qcleanuphandler.h"
#endif
#if defined(Q_OS_LINUX)
#define LINUX_MEMLOCK_LIMIT_BYTES 16384
#define LINUX_MEMLOCK_LIMIT_CHARACTERS LINUX_MEMLOCK_LIMIT_BYTES/sizeof(QChar)
#endif
#ifndef LLONG_MAX
#define LLONG_MAX Q_INT64_C(9223372036854775807)
#endif
@ -1025,6 +1033,14 @@ static inline bool format(QChar::Decomposition tag, QString & str,
} // format()
#endif
QStringData::~QStringData() {
if ( unicode ) delete[] ((char*)unicode);
if ( ascii && security_unpaged ) {
munlock(ascii, LINUX_MEMLOCK_LIMIT_BYTES);
}
if ( ascii ) delete[] ascii;
}
/*
QString::compose() and visual() were developed by Gordon Tisher
<tisher@uniserve.ca>, with input from Lars Knoll <knoll@mpi-hd.mpg.de>,
@ -1202,6 +1218,15 @@ static QChar* internalLatin1ToUnicode( const char *str, uint* len,
return result;
}
/*!
ABI compatibility
*/
char* QString::unicodeToLatin1(const QChar *uc, uint l)
{
return unicodeToLatin1(uc, l, false);
}
/*!
This utility function converts \a l 16-bit characters from \a uc
to ASCII, returning a '\0'-terminated string.
@ -1209,13 +1234,19 @@ static QChar* internalLatin1ToUnicode( const char *str, uint* len,
The caller is responsible for deleting the resultant string with
delete[].
*/
char* QString::unicodeToLatin1(const QChar *uc, uint l)
char* QString::unicodeToLatin1(const QChar *uc, uint l, bool unpaged)
{
if (!uc) {
return 0;
}
char *a = new char[l+1];
char *result = a;
if (unpaged) {
#if defined(Q_OS_LINUX)
mlock(result, LINUX_MEMLOCK_LIMIT_BYTES);
#endif
}
while (l--) {
*a++ = (uc->unicode() > 0xff) ? '?' : (char)uc->unicode();
uc++;
@ -1707,8 +1738,10 @@ void QString::setLength( uint newLen )
if ( nd ) {
uint len = QMIN( d->len, newLen );
memcpy( nd, d->unicode, sizeof(QChar) * len );
bool unpaged = d->security_unpaged;
deref();
d = new QStringData( nd, newLen, newMax );
setSecurityUnPaged(unpaged);
}
} else {
d->len = newLen;
@ -1760,8 +1793,10 @@ void QString::reserve( uint minCapacity )
uint len = d->len;
if ( len )
memcpy( nd, d->unicode, sizeof(QChar) * len );
bool unpaged = d->security_unpaged;
deref();
d = new QStringData( nd, len, minCapacity );
setSecurityUnPaged(unpaged);
}
}
}
@ -1780,8 +1815,10 @@ void QString::squeeze()
uint len = d->len;
if ( len )
memcpy( nd, d->unicode, sizeof(QChar) * len );
bool unpaged = d->security_unpaged;
deref();
d = new QStringData( nd, len, len );
setSecurityUnPaged(unpaged);
}
}
}
@ -2744,9 +2781,11 @@ QString& QString::fill( QChar c, int len )
if ( len == 0 ) {
*this = "";
} else {
bool unpaged = d->security_unpaged;
deref();
QChar * nd = QT_ALLOC_QCHAR_VEC( len );
d = new QStringData(nd,len,len);
setSecurityUnPaged(unpaged);
while (len--) *nd++ = c;
}
return *this;
@ -5678,8 +5717,15 @@ QString &QString::operator+=( char c )
const char* QString::latin1() const
{
if ( !d->ascii || !d->islatin1 ) {
if (d->security_unpaged) {
#if defined(Q_OS_LINUX)
if (d->ascii) {
munlock(d->ascii, LINUX_MEMLOCK_LIMIT_BYTES);
}
#endif
}
delete [] d->ascii;
d->ascii = unicodeToLatin1( d->unicode, d->len );
d->ascii = unicodeToLatin1( d->unicode, d->len, d->security_unpaged );
d->islatin1 = TRUE;
}
return d->ascii;
@ -5699,10 +5745,22 @@ const char* QString::ascii() const
#ifndef QT_NO_TEXTCODEC
if ( QTextCodec::codecForCStrings() ) {
if ( !d->ascii || d->islatin1 ) {
if (d->security_unpaged) {
#if defined(Q_OS_LINUX)
if (d->ascii) {
munlock(d->ascii, LINUX_MEMLOCK_LIMIT_BYTES);
}
#endif
}
delete [] d->ascii;
if (d->unicode) {
QCString s = QTextCodec::codecForCStrings()->fromUnicode( *this );
d->ascii = new char[s.length() + 1];
if (d->security_unpaged) {
#if defined(Q_OS_LINUX)
mlock(d->ascii, LINUX_MEMLOCK_LIMIT_BYTES);
#endif
}
memcpy(d->ascii, s.data(), s.length() + 1);
} else {
d->ascii = 0;
@ -5715,6 +5773,23 @@ const char* QString::ascii() const
return latin1();
}
void QString::setSecurityUnPaged(bool lock) {
if (lock != d->security_unpaged) {
if (d->security_unpaged) {
if (d->ascii) {
munlock(d->ascii, LINUX_MEMLOCK_LIMIT_BYTES);
}
d->security_unpaged = false;
}
else {
if (d->ascii) {
mlock(d->ascii, LINUX_MEMLOCK_LIMIT_BYTES);
}
d->security_unpaged = true;
}
}
}
/*!
Returns the string encoded in UTF-8 format.

14
src/tools/qstring.h
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@ -360,11 +360,10 @@ inline bool operator>( QChar c1, QChar c2 ) { return !(c2>=c1); }
// internal
struct Q_EXPORT QStringData : public QShared {
QStringData() :
QShared(), unicode(0), ascii(0), len(0), issimpletext(TRUE), maxl(0), islatin1(FALSE) { ref(); }
QShared(), unicode(0), ascii(0), len(0), issimpletext(TRUE), maxl(0), islatin1(FALSE), security_unpaged(FALSE) { ref(); }
QStringData(QChar *u, uint l, uint m) :
QShared(), unicode(u), ascii(0), len(l), issimpletext(FALSE), maxl(m), islatin1(FALSE) { }
~QStringData() { if ( unicode ) delete[] ((char*)unicode);
if ( ascii ) delete[] ascii; }
QShared(), unicode(u), ascii(0), len(l), issimpletext(FALSE), maxl(m), islatin1(FALSE), security_unpaged(FALSE) { }
~QStringData();
void deleteSelf();
QChar *unicode;
@ -389,6 +388,8 @@ struct Q_EXPORT QStringData : public QShared {
#endif
uint islatin1 : 1;
bool security_unpaged : 1;
private:
#if defined(Q_DISABLE_COPY)
QStringData( const QStringData& );
@ -750,7 +751,12 @@ private:
// needed for QDeepCopy
void detach();
void setSecurityUnPaged(bool lock);
static char* unicodeToLatin1( const QChar*, uint len, bool unpaged );
friend class QDeepCopy<QString>;
friend class QLineEdit;
};
class Q_EXPORT QCharRef {

46
src/widgets/qlineedit.cpp
Unescape View File

@ -63,6 +63,9 @@
#include "../kernel/qinternal_p.h"
#include "private/qtextlayout_p.h"
#include "qvaluevector.h"
#if defined(Q_OS_LINUX)
#include <sys/mman.h>
#endif
#if defined(QT_ACCESSIBILITY_SUPPORT)
#include "qaccessible.h"
#endif
@ -74,6 +77,11 @@
#define ACCEL_KEY(k) "\t" + QString("Ctrl+" #k)
#endif
#if defined(Q_OS_LINUX)
#define LINUX_MEMLOCK_LIMIT_BYTES 16384
#define LINUX_MEMLOCK_LIMIT_CHARACTERS LINUX_MEMLOCK_LIMIT_BYTES/sizeof(QChar)
#endif
#define innerMargin 1
struct QLineEditPrivate : public Qt
@ -451,6 +459,10 @@ QLineEdit::QLineEdit( const QString& contents, const QString &inputMask, QWidget
QLineEdit::~QLineEdit()
{
if ((d->echoMode == NoEcho) || (d->echoMode == Password) || (d->echoMode == PasswordThreeStars)) {
d->text.fill(QChar(0));
munlock(d->text.d->unicode, LINUX_MEMLOCK_LIMIT_BYTES);
}
delete [] d->maskData;
delete d;
}
@ -500,11 +512,16 @@ void QLineEdit::setText( const QString& text)
QString QLineEdit::displayText() const
{
if ( d->echoMode == NoEcho )
if ( d->echoMode == NoEcho ) {
return QString::fromLatin1("");
}
QString res = d->text;
if ( d->echoMode == Password )
if ( d->echoMode == Password ) {
res.fill( passwordChar() );
}
else if ( d->echoMode == PasswordThreeStars ) {
res.fill( passwordChar(), res.length()*3 );
}
return ( res.isNull() ? QString::fromLatin1("") : res );
}
@ -598,11 +615,26 @@ QLineEdit::EchoMode QLineEdit::echoMode() const
void QLineEdit::setEchoMode( EchoMode mode )
{
if (mode == (EchoMode)d->echoMode)
if (mode == (EchoMode)d->echoMode) {
return;
}
#if defined(Q_OS_LINUX)
if (((mode == NoEcho) || (mode == Password) || (mode == PasswordThreeStars)) && ((EchoMode)d->echoMode == Normal)) {
if ((uint)d->maxLength > (LINUX_MEMLOCK_LIMIT_CHARACTERS-1)) {
d->maxLength = LINUX_MEMLOCK_LIMIT_CHARACTERS-1;
}
d->text.reserve(LINUX_MEMLOCK_LIMIT_CHARACTERS);
mlock(d->text.d->unicode, LINUX_MEMLOCK_LIMIT_BYTES);
d->text.setSecurityUnPaged(true);
}
else {
d->text.setSecurityUnPaged(false);
munlock(d->text.d->unicode, LINUX_MEMLOCK_LIMIT_BYTES);
}
#endif
d->echoMode = mode;
d->updateTextLayout();
setInputMethodEnabled( mode == Normal );
setInputMethodEnabled( ( mode == Normal ) || ( mode == Password) );
update();
}
@ -1688,12 +1720,12 @@ void QLineEdit::keyPressEvent( QKeyEvent * e )
case Key_Right:
case Key_Left:
if ( d->isRightToLeft() == (e->key() == Key_Right) ) {
if ( echoMode() == Normal )
if (( echoMode() == Normal ) || ( echoMode() == Password ))
cursorWordBackward( e->state() & ShiftButton );
else
home( e->state() & ShiftButton );
} else {
if ( echoMode() == Normal )
if (( echoMode() == Normal ) || ( echoMode() == Password ))
cursorWordForward( e->state() & ShiftButton );
else
end( e->state() & ShiftButton );
@ -2069,7 +2101,7 @@ void QLineEdit::drawContents( QPainter *p )
// Asian users regard IM selection text as cursor on candidate
// selection phase of input method, so ordinary cursor should be
// invisible if IM selection text exists.
if ( d->cursorVisible && !supressCursor && !d->hasIMSelection() ) {
if ( d->cursorVisible && !supressCursor && !d->hasIMSelection() && (d->echoMode != PasswordThreeStars) ) {
QPoint from( topLeft.x() + cix, lineRect.top() );
QPoint to = from + QPoint( 0, lineRect.height() );
p->drawLine( from, to );

2
src/widgets/qlineedit.h
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@ -94,7 +94,7 @@ public:
bool frame() const;
enum EchoMode { Normal, NoEcho, Password };
enum EchoMode { Normal, NoEcho, Password, PasswordThreeStars };
EchoMode echoMode() const;
bool isReadOnly() const;

4
tools/designer/designer/designerappiface.cpp
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@ -58,6 +58,10 @@ DesignerInterfaceImpl::DesignerInterfaceImpl( MainWindow *mw )
{
}
DesignerInterfaceImpl::~DesignerInterfaceImpl()
{
}
QRESULT DesignerInterfaceImpl::queryInterface( const QUuid &uuid, QUnknownInterface** iface )
{
*iface = 0;

1
tools/designer/designer/designerappiface.h
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@ -47,6 +47,7 @@ class DesignerInterfaceImpl : public DesignerInterface
{
public:
DesignerInterfaceImpl( MainWindow *mw );
virtual ~DesignerInterfaceImpl();
DesignerProject *currentProject() const;
DesignerFormWindow *currentForm() const;

21
tools/designer/interfaces/designerinterface.h
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@ -108,6 +108,9 @@ struct DesignerInterface : public QUnknownInterface
struct DesignerProject
{
DesignerProject() {}
virtual ~DesignerProject() {}
virtual QPtrList<DesignerFormWindow> formList() const = 0;
virtual QStringList formNames() const = 0;
virtual QString formFileName( const QString &form ) const = 0;
@ -149,6 +152,9 @@ struct DesignerProject
struct DesignerDatabase
{
DesignerDatabase() {}
virtual ~DesignerDatabase() {}
virtual QString name() const = 0;
virtual void setName( const QString & ) = 0;
virtual QString driver() const = 0;
@ -173,12 +179,18 @@ struct DesignerDatabase
struct DesignerPixmapCollection
{
DesignerPixmapCollection() {}
virtual ~DesignerPixmapCollection() {}
virtual void addPixmap( const QPixmap &p, const QString &name, bool force ) = 0;
virtual QPixmap pixmap( const QString &name ) const = 0;
};
struct DesignerFormWindow
{
DesignerFormWindow() {}
virtual ~DesignerFormWindow() {}
virtual QString name() const = 0;
virtual void setName( const QString &n ) = 0;
virtual QString fileName() const = 0;
@ -248,16 +260,25 @@ struct DesignerFormWindow
struct DesignerSourceFile
{
DesignerSourceFile() {}
virtual ~DesignerSourceFile() {}
virtual QString fileName() const = 0;
};
struct DesignerDock
{
DesignerDock() {}
virtual ~DesignerDock() {}
virtual QDockWindow *dockWindow() const = 0;
};
struct DesignerOutputDock
{
DesignerOutputDock() {}
virtual ~DesignerOutputDock() {}
virtual QWidget *addView( const QString &pageName ) = 0;
virtual void appendDebug( const QString & ) = 0;
virtual void clearDebug() = 0;

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