add LeakDetector feature to luajit::Context, luajit::Thread, and nf7::Lambda

core/luajit/context.cc

@@ -1,6 +1,7 @@
 // No copyright
 #include "core/luajit/context.hh"
 
+#include "iface/common/leak_detector.hh"
 #include "iface/subsys/concurrency.hh"
 #include "iface/subsys/parallelism.hh"
 
@@ -52,7 +53,9 @@ void TaskContext::Push(const nf7::Value& v) noexcept {
 
 namespace {
 template <typename T>
-class ContextImpl final : public Context {
+class ContextImpl final :
+    public Context,
+    private LeakDetector<ContextImpl<T>> {
  public:
   ContextImpl(const char* name, Kind kind, Env& env)
       : Context(name, kind), tasq_(env.Get<T>()) {

core/luajit/thread.hh

@@ -8,11 +8,15 @@
 
 #include <lua.hpp>
 
+#include "iface/common/leak_detector.hh"
+
 #include "core/luajit/context.hh"
 
 namespace nf7::core::luajit {
 
-class Thread : public std::enable_shared_from_this<Thread> {
+class Thread :
+    public std::enable_shared_from_this<Thread>,
+    private LeakDetector<Thread> {
  public:
   struct DoNotCallConstructorDirectly { };
 

iface/lambda.hh

@@ -6,13 +6,14 @@
 #include <vector>
 
 #include "iface/common/dealer.hh"
+#include "iface/common/leak_detector.hh"
 #include "iface/common/exception.hh"
 #include "iface/common/observer.hh"
 #include "iface/common/value.hh"
 
 namespace nf7 {
 
-class Lambda {
+class Lambda : private LeakDetector<Lambda> {
  public:
   Lambda() = delete;
   Lambda(const std::shared_ptr<Taker<Value>>& taker,