Add tracepointgen tool and convert qtgui to use it

Allows automatically generating tracepoint files by scanning source
files for instrumentation macros.

This makes it easier to add tracepoint support to modules and also
ensures that the tracepoint files do not get out of sync with the
functions they are tracing.

Q_TRACE_INSTRUMENT generates entry/exit tracespoints for a function
it is set. Q_TRACE_PARAM_REPLACE is used to change a function parameter
for these functions to convert it to supported parameter type.
Q_TRACE_POINT can be used to create a standalone tracepoint.
Q_TRACE_PREFIX can be used to add prefix for generated tracing backend
for example to add includes for types used in the trace points..

Task-number: QTBUG-107238
Pick-to: 6.5
Change-Id: Ib395b80838434ceb72683dac0545ca20c4d09455
Reviewed-by: Tomi Korpipää <tomi.korpipaa@qt.io>

1 files changed, 22 insertions, 9 deletions

diff --git a/src/gui/image/qimage.cpp b/src/gui/image/qimage.cpp
index af26d2ea4b..c9a32d8947 100644
--- a/src/gui/image/qimage.cpp
+++ b/src/gui/image/qimage.cpp
@@ -63,6 +63,15 @@ QT_WARNING_DISABLE_MSVC(4723)
         return QImage(); \
     }
 
+Q_TRACE_PREFIX(qtgui,
+   "QT_BEGIN_NAMESPACE" \
+   "class QEvent;"      \
+   "QT_END_NAMESPACE"
+)
+
+Q_TRACE_PARAM_REPLACE(Qt::AspectRatioMode, int);
+Q_TRACE_PARAM_REPLACE(Qt::TransformationMode, int);
+Q_TRACE_PARAM_REPLACE(Qt::ImageConversionFlags, int);
 
 static QImage rotated90(const QImage &src);
 static QImage rotated180(const QImage &src);
@@ -94,11 +103,12 @@ QImageData::QImageData()
     Creates a new image data.
     Returns \nullptr if invalid parameters are give or anything else failed.
 */
-QImageData * QImageData::create(const QSize &size, QImage::Format format)
+QImageData * Q_TRACE_INSTRUMENT(qtgui) QImageData::create(const QSize &size, QImage::Format format)
 {
     if (size.isEmpty() || format <= QImage::Format_Invalid || format >= QImage::NImageFormats)
         return nullptr;                             // invalid parameter(s)
 
+    Q_TRACE_PARAM_REPLACE(QImage::Format, int);
     Q_TRACE_SCOPE(QImageData_create, size, static_cast<int>(format));
 
     int width = size.width();
@@ -1182,7 +1192,7 @@ static void copyMetadata(QImage *dst, const QImage &src)
 
     \sa QImage()
 */
-QImage QImage::copy(const QRect& r) const
+QImage Q_TRACE_INSTRUMENT(qtgui) QImage::copy(const QRect& r) const
 {
     Q_TRACE_SCOPE(QImage_copy, r);
     if (!d)
@@ -2980,7 +2990,7 @@ bool QImage::isGrayscale() const
     \sa isNull(), {QImage#Image Transformations}{Image
     Transformations}
 */
-QImage QImage::scaled(const QSize& s, Qt::AspectRatioMode aspectMode, Qt::TransformationMode mode) const
+QImage Q_TRACE_INSTRUMENT(qtgui) QImage::scaled(const QSize& s, Qt::AspectRatioMode aspectMode, Qt::TransformationMode mode) const
 {
     if (!d) {
         qWarning("QImage::scaled: Image is a null image");
@@ -3017,7 +3027,7 @@ QImage QImage::scaled(const QSize& s, Qt::AspectRatioMode aspectMode, Qt::Transf
 
     \sa {QImage#Image Transformations}{Image Transformations}
 */
-QImage QImage::scaledToWidth(int w, Qt::TransformationMode mode) const
+QImage Q_TRACE_INSTRUMENT(qtgui) QImage::scaledToWidth(int w, Qt::TransformationMode mode) const
 {
     if (!d) {
         qWarning("QImage::scaleWidth: Image is a null image");
@@ -3047,7 +3057,7 @@ QImage QImage::scaledToWidth(int w, Qt::TransformationMode mode) const
 
     \sa {QImage#Image Transformations}{Image Transformations}
 */
-QImage QImage::scaledToHeight(int h, Qt::TransformationMode mode) const
+QImage Q_TRACE_INSTRUMENT(qtgui) QImage::scaledToHeight(int h, Qt::TransformationMode mode) const
 {
     if (!d) {
         qWarning("QImage::scaleHeight: Image is a null image");
@@ -3080,7 +3090,7 @@ QImage QImage::scaledToHeight(int h, Qt::TransformationMode mode) const
     \sa createHeuristicMask(), {QImage#Image Transformations}{Image
     Transformations}
 */
-QImage QImage::createAlphaMask(Qt::ImageConversionFlags flags) const
+QImage Q_TRACE_INSTRUMENT(qtgui) QImage::createAlphaMask(Qt::ImageConversionFlags flags) const
 {
     if (!d || d->format == QImage::Format_RGB32)
         return QImage();
@@ -3532,7 +3542,7 @@ static inline void rgbSwapped_generic(int width, int height, const QImage *src,
 /*!
     \internal
 */
-QImage QImage::rgbSwapped_helper() const
+QImage Q_TRACE_INSTRUMENT(qtgui) QImage::rgbSwapped_helper() const
 {
     if (isNull())
         return *this;
@@ -4765,12 +4775,15 @@ static QImage rotated270(const QImage &image)
     Transformations}
 */
 
-QImage QImage::transformed(const QTransform &matrix, Qt::TransformationMode mode ) const
+QImage Q_TRACE_INSTRUMENT(qtgui) QImage::transformed(const QTransform &matrix, Qt::TransformationMode mode ) const
 {
     if (!d)
         return QImage();
 
-    Q_TRACE_SCOPE(QImage_transformed, matrix, mode);
+    Q_TRACE_PARAM_REPLACE(const QTransform &, double[9]);
+    Q_TRACE_SCOPE(QImage_transformed, QList<double>({matrix.m11(), matrix.m12(), matrix.m13(),
+                                                  matrix.m21(), matrix.m22(), matrix.m23(),
+                                                  matrix.m31(), matrix.m32(), matrix.m33()}).data(), mode);
 
     // source image data
     const int ws = width();