added virtual destructors in classes that have virtual methods

to prevent future memory leaks (bzr r3587.4.1)

4 files changed, 5 insertions, 1 deletions

diff --git a/plugins/unityshell/src/AggregateMonitor.h b/plugins/unityshell/src/AggregateMonitor.h
index 251f8158d..eb03caa3b 100644
--- a/plugins/unityshell/src/AggregateMonitor.h
+++ b/plugins/unityshell/src/AggregateMonitor.h
@@ -33,7 +33,7 @@ class AggregateMonitor : public Monitor
 {
 public:
 AggregateMonitor();
- ~AggregateMonitor();
+ virtual ~AggregateMonitor();
 std::string GetName() const;
 
 protected:
diff --git a/plugins/unityshell/src/ElapsedTimeMonitor.h b/plugins/unityshell/src/ElapsedTimeMonitor.h
index 55f6d9d83..52f501b0e 100644
--- a/plugins/unityshell/src/ElapsedTimeMonitor.h
+++ b/plugins/unityshell/src/ElapsedTimeMonitor.h
@@ -31,6 +31,7 @@ namespace performance {
 class ElapsedTimeMonitor : public Monitor
 {
 public:
+ virtual ~ElapsedTimeMonitor() {}
 std::string GetName() const;
 
 protected:
diff --git a/plugins/unityshell/src/Monitor.h b/plugins/unityshell/src/Monitor.h
index ee6dfa6b9..11a28c456 100644
--- a/plugins/unityshell/src/Monitor.h
+++ b/plugins/unityshell/src/Monitor.h
@@ -29,6 +29,8 @@ namespace performance {
 class Monitor
 {
 public:
+ virtual ~Monitor() {}
+
	void Start();
	GVariant* Stop();
	virtual std::string GetName() const = 0;
diff --git a/plugins/unityshell/src/UnityGestureTarget.h b/plugins/unityshell/src/UnityGestureTarget.h
index f47996e63..574ba0148 100644
--- a/plugins/unityshell/src/UnityGestureTarget.h
+++ b/plugins/unityshell/src/UnityGestureTarget.h
@@ -34,6 +34,7 @@ class UnityGestureTarget : public nux::GestureTarget
 {
 public:
 UnityGestureTarget();
+ virtual ~UnityGestureTarget() {}
 
 virtual nux::GestureDeliveryRequest GestureEvent(const nux::GestureEvent &event);