From 59d871c0e3c63612c70013872ebcca8b43d72e2c Mon Sep 17 00:00:00 2001
From: Mattia Basaglia <mattia.basaglia@gmail.com>
Date: Thu, 30 Jul 2015 11:25:22 +0200
Subject: [PATCH] Release residual items in the HashedCache destructor, to
 avoid more error messages

---
 libs/container/cache.h | 129 +++++++++++++++++++++--------------------
 1 file changed, 65 insertions(+), 64 deletions(-)

diff --git a/libs/container/cache.h b/libs/container/cache.h
index 3788fb14..0adb73ef 100644
--- a/libs/container/cache.h
+++ b/libs/container/cache.h
@@ -95,83 +95,84 @@ pointer operator->() const {
 template<typename Key, typename Cached, typename Hasher, typename KeyEqual = std::equal_to<Key>, typename CreationPolicy = DefaultCreationPolicy<Cached, Key> >
 class HashedCache : public CreationPolicy
 {
-typedef SharedValue<Cached> Element;
-typedef HashTable<Key, Element, Hasher, KeyEqual> map_type;
+	typedef SharedValue<Cached> Element;
+	typedef HashTable<Key, Element, Hasher, KeyEqual> map_type;
 
-map_type m_map;
+	map_type m_map;
 
 public:
-explicit HashedCache( const CreationPolicy& creation = CreationPolicy() )
-	: CreationPolicy( creation ), m_map( 256 ){
-}
-~HashedCache(){
-	ASSERT_MESSAGE( empty(), "HashedCache::~HashedCache: not empty" );
-}
-
-typedef typename map_type::iterator iterator;
-typedef typename map_type::value_type value_type;
+	explicit HashedCache( const CreationPolicy& creation = CreationPolicy() )
+		: CreationPolicy( creation ), m_map( 256 ){
+	}
+	~HashedCache(){
+		ASSERT_MESSAGE( empty(), "HashedCache::~HashedCache: not empty" );
+		for ( auto i = begin(); i != end(); )
+		{
+			auto next = i;
+			++next;
+			release(i);
+			i = next;
+		}
+	}
 
-iterator begin(){
-	return m_map.begin();
-}
-iterator end(){
-	return m_map.end();
-}
+	typedef typename map_type::iterator iterator;
+	typedef typename map_type::value_type value_type;
 
-bool empty() const {
-	return m_map.empty();
-}
+	iterator begin(){
+		return m_map.begin();
+	}
+	iterator end(){
+		return m_map.end();
+	}
 
-iterator find( const Key& key ){
-	return m_map.find( key );
-}
+	bool empty() const {
+		return m_map.empty();
+	}
 
-void capture( iterator i ){
-	( *i ).second.increment();
-}
-void release( iterator i ){
-	if ( ( *i ).second.decrement() == 0 ) {
-		CreationPolicy::destroy( ( *i ).second.get() );
-		m_map.erase( i );
+	iterator find( const Key& key ){
+		return m_map.find( key );
 	}
-}
 
-#if 1
-Element& capture( const Key& key ){
-#if 0
-	Element& elem = m_map[key];
-	if ( elem.increment() == 1 ) {
-		elem.set( CreationPolicy::construct( key ) );
+	void capture( iterator i ){
+		( *i ).second.increment();
 	}
-	return elem;
-#else
-	iterator i = m_map.emplace( key, Element() ).first;
-	if ( ( *i ).second.increment() == 1 ) {
-		( *i ).second.set( CreationPolicy::construct( ( *i ).first ) );
+	void release( iterator i ){
+		if ( ( *i ).second.decrement() == 0 ) {
+			CreationPolicy::destroy( ( *i ).second.get() );
+			m_map.erase( i );
+		}
 	}
-	return ( *i ).second;
-#endif
-}
-#else
-value_type& capture( const Key& key ){
-	iterator i = m_map.find( key );
-	if ( i == m_map.end() ) {
-		i = m_map.insert( key, Element() );
-		( *i ).second.set( CreationPolicy::construct( ( *i ).first ) );
+
+	Element& capture( const Key& key ){
+		/*Element& elem = m_map[key];
+		if ( elem.increment() == 1 ) {
+			elem.set( CreationPolicy::construct( key ) );
+		}
+		return elem;*/
+		iterator i = m_map.emplace( key, Element() ).first;
+		if ( ( *i ).second.increment() == 1 ) {
+			( *i ).second.set( CreationPolicy::construct( ( *i ).first ) );
+		}
+		return ( *i ).second;
+	}
+	/*value_type& capture( const Key& key ){
+		iterator i = m_map.find( key );
+		if ( i == m_map.end() ) {
+			i = m_map.insert( key, Element() );
+			( *i ).second.set( CreationPolicy::construct( ( *i ).first ) );
+		}
+		( *i ).second.increment();
+		return ( *i );
+	}*/
+	void release( const Key& key ){
+		iterator i = m_map.find( key );
+		ASSERT_MESSAGE( i != m_map.end(), "releasing a non-existent object\n" );
+		release( i );
 	}
-	( *i ).second.increment();
-	return ( *i );
-}
-#endif
-void release( const Key& key ){
-	iterator i = m_map.find( key );
-	ASSERT_MESSAGE( i != m_map.end(), "releasing a non-existent object\n" );
-	release( i );
-}
 
-void clear(){
-	m_map.clear();
-}
+	void clear(){
+		m_map.clear();
+	}
 };
 
 
-- 
2.39.2