Qt: add a reference counter to sequence analysis info

Increment the reference counter each time a flow sequence window is opened.
Free seq_analysis_info_t structure once the last flow sequence / VoIP calls / SIP flow window is closed.

Bug: 11712
Change-Id: I20fcb922b0516417d4bd74cdf75475dcb31f8b90
Reviewed-on: https://code.wireshark.org/review/11851
Reviewed-by: Pascal Quantin <pascal.quantin@gmail.com>
Petri-Dish: Pascal Quantin <pascal.quantin@gmail.com>
Tested-by: Petri Dish Buildbot <buildbot-no-reply@wireshark.org>
Reviewed-by: Alexis La Goutte <alexis.lagoutte@gmail.com>

1 files changed, 15 insertions, 2 deletions

diff --git a/ui/qt/sequence_dialog.h b/ui/qt/sequence_dialog.h
index f87bd2bd66..489ac3c026 100644
--- a/ui/qt/sequence_dialog.h
+++ b/ui/qt/sequence_dialog.h
@@ -43,12 +43,25 @@ class SequenceDialog;
 
 class SequenceDiagram;
 
+class SequenceInfo
+{
+public:
+    SequenceInfo(seq_analysis_info_t *sainfo = NULL);
+    seq_analysis_info_t * sainfo() { return sainfo_;}
+    void ref() { count_++; }
+    void unref() { if (--count_ == 0) delete this; }
+private:
+    ~SequenceInfo();
+    seq_analysis_info_t *sainfo_;
+    unsigned int count_;
+};
+
 class SequenceDialog : public WiresharkDialog
 {
     Q_OBJECT
 
 public:
-    explicit SequenceDialog(QWidget &parent, CaptureFile &cf, seq_analysis_info_t *sainfo = NULL);
+    explicit SequenceDialog(QWidget &parent, CaptureFile &cf, SequenceInfo *info = NULL);
     ~SequenceDialog();
 
 signals:
@@ -89,7 +102,7 @@ private slots:
 private:
     Ui::SequenceDialog *ui;
     SequenceDiagram *seq_diagram_;
-    seq_analysis_info_t *sainfo_;
+    SequenceInfo *info_;
     int num_items_;
     guint32 packet_num_;
     double one_em_;