diff data/model/SparseModel.h @ 1212:f80773b5ec96 piper

More cautious locking on sparse model modification

--- a/data/model/SparseModel.h	Mon Oct 17 14:18:23 2016 +0100
+++ b/data/model/SparseModel.h	Mon Oct 17 14:28:43 2016 +0100
@@ -729,8 +729,8 @@
     {
 	QMutexLocker locker(&m_mutex);
 	m_resolution = resolution;
+        m_rows.clear();
     }
-    m_rows.clear();
     emit modelChanged();
 }
 
@@ -742,8 +742,8 @@
 	QMutexLocker locker(&m_mutex);
 	m_points.clear();
         m_pointCount = 0;
+        m_rows.clear();
     }
-    m_rows.clear();
     emit modelChanged();
 }
 
@@ -751,12 +751,11 @@
 void
 SparseModel<PointType>::addPoint(const PointType &point)
 {
-    {
-	QMutexLocker locker(&m_mutex);
-	m_points.insert(point);
-        m_pointCount++;
-        if (point.getLabel() != "") m_hasTextLabels = true;
-    }
+    QMutexLocker locker(&m_mutex);
+
+    m_points.insert(point);
+    m_pointCount++;
+    if (point.getLabel() != "") m_hasTextLabels = true;
 
     // Even though this model is nominally sparse, there may still be
     // too many signals going on here (especially as they'll probably
@@ -783,18 +782,16 @@
 bool
 SparseModel<PointType>::containsPoint(const PointType &point)
 {
-    {
-	QMutexLocker locker(&m_mutex);
+    QMutexLocker locker(&m_mutex);
 
-	PointListIterator i = m_points.lower_bound(point);
-	typename PointType::Comparator comparator;
-	while (i != m_points.end()) {
-	    if (i->frame > point.frame) break;
-	    if (!comparator(*i, point) && !comparator(point, *i)) {
-                return true;
-	    }
-	    ++i;
-	}
+    PointListIterator i = m_points.lower_bound(point);
+    typename PointType::Comparator comparator;
+    while (i != m_points.end()) {
+        if (i->frame > point.frame) break;
+        if (!comparator(*i, point) && !comparator(point, *i)) {
+            return true;
+        }
+        ++i;
     }
 
     return false;
@@ -804,21 +801,20 @@
 void
 SparseModel<PointType>::deletePoint(const PointType &point)
 {
-    {
-	QMutexLocker locker(&m_mutex);
+    QMutexLocker locker(&m_mutex);
 
-	PointListIterator i = m_points.lower_bound(point);
-	typename PointType::Comparator comparator;
-	while (i != m_points.end()) {
-	    if (i->frame > point.frame) break;
-	    if (!comparator(*i, point) && !comparator(point, *i)) {
-		m_points.erase(i);
-                m_pointCount--;
-		break;
+    PointListIterator i = m_points.lower_bound(point);
+    typename PointType::Comparator comparator;
+    while (i != m_points.end()) {
+        if (i->frame > point.frame) break;
+        if (!comparator(*i, point) && !comparator(point, *i)) {
+            m_points.erase(i);
+            m_pointCount--;
+            break;
 	    }
-	    ++i;
-	}
+        ++i;
     }
+
 //    std::cout << "SparseOneDimensionalModel: emit modelChanged("
 //	      << point.frame << ")" << std::endl;
     m_rows.clear(); //!!! inefficient
@@ -831,6 +827,8 @@
 {
 //    std::cerr << "SparseModel::setCompletion(" << completion << ")" << std::endl;
 
+    QMutexLocker locker(&m_mutex);
+
     if (m_completion != completion) {
 	m_completion = completion;