Add DummyBucketExecutor for use in testing.

1 files changed, 25 insertions, 4 deletions

diff --git a/vespalib/src/vespa/vespalib/util/destructor_callbacks.h b/vespalib/src/vespa/vespalib/util/destructor_callbacks.h
index fc0d23fa177..211105127cf 100644
--- a/vespalib/src/vespa/vespalib/util/destructor_callbacks.h
+++ b/vespalib/src/vespa/vespalib/util/destructor_callbacks.h
@@ -8,25 +8,46 @@ namespace vespalib {
 
 class Gate;
 
-class GateCallback : public vespalib::IDestructorCallback {
+class GateCallback : public IDestructorCallback {
 public:
-    GateCallback(vespalib::Gate & gate) noexcept : _gate(gate) {}
+    explicit GateCallback(vespalib::Gate & gate) noexcept : _gate(gate) {}
     ~GateCallback() override;
 private:
     vespalib::Gate & _gate;
 };
 
-class IgnoreCallback : public vespalib::IDestructorCallback {
+class IgnoreCallback : public IDestructorCallback {
 public:
     IgnoreCallback() noexcept { }
     ~IgnoreCallback() override = default;
 };
 
 template <typename T>
-struct KeepAlive : public vespalib::IDestructorCallback {
+struct KeepAlive : public IDestructorCallback {
     explicit KeepAlive(T toKeep) noexcept : _toKeep(std::move(toKeep)) { }
     ~KeepAlive() override = default;
     T _toKeep;
 };
 
+template<class FunctionType>
+class LambdaCallback : public IDestructorCallback {
+public:
+    explicit LambdaCallback(FunctionType &&func) noexcept
+        : _func(std::move(func))
+    {}
+    ~LambdaCallback() {
+        _func();
+    }
+private:
+    FunctionType _func;
+};
+
+template<class FunctionType>
+std::shared_ptr<IDestructorCallback>
+makeLambdaCallback(FunctionType &&function) {
+    return std::make_shared<LambdaCallback<std::decay_t<FunctionType>>>
+            (std::forward<FunctionType>(function));
+}
+
+
 }