[DONTMERGE] Add debug tracers for TQFont and TQFontMetrics creation

Signed-off-by: Alexander Golubev <fatzer2@gmail.com>

2 files changed, 84 insertions, 1 deletions

diff --git a/src/kernel/qfont.cpp b/src/kernel/qfont.cpp
index 44168a1fa..d9600b7ab 100644
--- a/src/kernel/qfont.cpp
+++ b/src/kernel/qfont.cpp
@@ -61,15 +61,82 @@
 #include "qpainter_p.h"
 #include "qtextengine_p.h"
 
-// #define TQFONTCACHE_DEBUG
+//#define TQFONTCACHE_DEBUG
 #ifdef TQFONTCACHE_DEBUG
 #  define FC_DEBUG tqDebug
 #else
 #  define FC_DEBUG if (FALSE) tqDebug
 #endif
 
+#include <execinfo.h>
 
+template<class T>
+class CreationTracerNoop {
+public:
+    void newO(T* ) {}
+    void delO(T* ) {}
+};
 
+template<class T>
+class  CreationTracer {
+    struct TracerData {
+	char **bt;
+	int bt_sz;
+    };
+    typedef TQMap<T*, TracerData> MapType;
+    MapType aliveObj;
+public:
+
+    void newO(T* o) {
+	const size_t buf_sz = 128;
+	void *buf[buf_sz];
+
+	int bt_sz = backtrace (buf, buf_sz);
+	aliveObj.insert(o, TracerData{backtrace_symbols(buf, bt_sz), bt_sz} );
+    }
+
+    void delO(T* o) {
+	auto it =aliveObj.find(o);
+	if(it!=aliveObj.end()) {
+	    free(it.data().bt);
+	    aliveObj.remove(it);
+	}
+
+    }
+
+    ~CreationTracer() {
+	std::string fname = typeid(T).name();
+	fname.append("-undestroyed");
+	FILE *f = fopen(fname.c_str(), "w");
+	if(!f) {
+	    return;
+	}
+	for(auto it = aliveObj.begin(), endIt = aliveObj.end(); it!=endIt; ++it) {
+	    for(int i=0; i<it.data().bt_sz; ++i) {
+		fprintf(f, "%s\n", it.data().bt[i]);
+	    }
+	    fprintf(f, "\n");
+	    free(it.data().bt);
+	}
+	fclose(f);
+    }
+};
+
+#define INIT_FIRST  __attribute__ ((init_priority (101)))
+//#define TQFONT_TRACE
+//#define TQFONTMETRIC_TRACE
+
+#ifdef TQFONT_TRACE
+static CreationTracer<TQFont> INIT_FIRST TQFontTracer;
+#else
+static CreationTracerNoop<TQFont> TQFontTracer;
+#endif // TQFONT_TRACE
+
+#ifdef TQFONT_TRACE
+static CreationTracer<TQFontMetrics> INIT_FIRST TQFontMetricsTracer;
+#else
+static CreationTracerNoop<TQFontMetrics> TQFontMetricsTracer;
+#endif // TQFONT_TRACE
 
 bool TQFontDef::operator==( const TQFontDef &other ) const
 {
@@ -534,6 +601,7 @@ TQFontEngineData::~TQFontEngineData()
 */
 TQFont::TQFont( TQFontPrivate *data, TQPaintDevice *pd )
 {
+    TQFontTracer.newO(this);
     d = new TQFontPrivate( *data );
     TQ_CHECK_PTR( d );
     d->paintdevice = pd;
@@ -578,6 +646,7 @@ void TQFont::detach()
 */
 TQFont::TQFont()
 {
+    TQFontTracer.newO(this);
     const TQFont appfont = TQApplication::font();
     d = appfont.d;
     d->ref();
@@ -602,6 +671,7 @@ TQFont::TQFont()
 */
 TQFont::TQFont( const TQString &family, int pointSize, int weight, bool italic )
 {
+    TQFontTracer.newO(this);
 
     d = new TQFontPrivate;
     TQ_CHECK_PTR( d );
@@ -632,6 +702,7 @@ TQFont::TQFont( const TQString &family, int pointSize, int weight, bool italic )
 */
 TQFont::TQFont( const TQFont &font )
 {
+    TQFontTracer.newO(this);
     d = font.d;
     d->ref();
 }
@@ -641,6 +712,7 @@ TQFont::TQFont( const TQFont &font )
 */
 TQFont::~TQFont()
 {
+    TQFontTracer.delO(this);
     if ( d->deref() )
 	delete d;
     d = 0;
@@ -1893,6 +1965,7 @@ TQDataStream &operator>>( TQDataStream &s, TQFont &font )
 TQFontMetrics::TQFontMetrics( const TQFont &font )
     : d( font.d ), painter( 0 ), fscript( TQFont::NoScript )
 {
+    TQFontMetricsTracer.newO(this);
     d->ref();
 }
 
@@ -1905,6 +1978,7 @@ TQFontMetrics::TQFontMetrics( const TQFont &font )
 TQFontMetrics::TQFontMetrics( const TQFont &font, TQFont::Script script )
     : d( font.d ), painter( 0 ), fscript( script )
 {
+    TQFontMetricsTracer.newO(this);
     d->ref();
 }
 
@@ -1915,6 +1989,7 @@ TQFontMetrics::TQFontMetrics( const TQFont &font, TQFont::Script script )
 TQFontMetrics::TQFontMetrics( const TQPainter *p )
     : painter ( (TQPainter *) p ), fscript( TQFont::NoScript )
 {
+    TQFontMetricsTracer.newO(this);
 #if defined(CHECK_STATE)
     if ( !painter->isActive() )
 	tqWarning( "TQFontMetrics: Get font metrics between TQPainter::begin() "
@@ -1944,6 +2019,7 @@ TQFontMetrics::TQFontMetrics( const TQPainter *p )
 TQFontMetrics::TQFontMetrics( const TQFontMetrics &fm )
     : d( fm.d ), painter( 0 ),  fscript( fm.fscript )
 {
+    TQFontMetricsTracer.newO(this);
     d->ref();
 }
 
@@ -1953,6 +2029,7 @@ TQFontMetrics::TQFontMetrics( const TQFontMetrics &fm )
 */
 TQFontMetrics::~TQFontMetrics()
 {
+    TQFontMetricsTracer.delO(this);
     if ( d->deref() )
 	delete d;
 }
diff --git a/src/kernel/qfontdata_p.h b/src/kernel/qfontdata_p.h
index 9c21dfe60..4647fedbb 100644
--- a/src/kernel/qfontdata_p.h
+++ b/src/kernel/qfontdata_p.h
@@ -121,6 +121,9 @@ public:
     TQFontEngineData();
     ~TQFontEngineData();
 
+    void ref(){TQShared::ref();}
+    bool deref(){return TQShared::deref();}
+
     uint lineWidth;
 
 #if defined(TQ_WS_X11) || defined(TQ_WS_WIN)
@@ -147,6 +150,9 @@ public:
     TQFontPrivate( const TQFontPrivate &other );
     ~TQFontPrivate();
 
+    void ref(){TQShared::ref();}
+    bool deref(){return TQShared::deref();}
+
     void load( TQFont::Script script );
     TQFontEngine *engineForScript( TQFont::Script script ) const {
 	if ( script == TQFont::NoScript )