neighbor/{Explorer,Listener}: add "noexcept"

src/Instance.cxx

@@ -98,14 +98,14 @@ Instance::OnDatabaseSongRemoved(const char *uri)
 #ifdef ENABLE_NEIGHBOR_PLUGINS
 
 void
-Instance::FoundNeighbor(gcc_unused const NeighborInfo &info)
+Instance::FoundNeighbor(gcc_unused const NeighborInfo &info) noexcept
 {
 	for (auto &partition : partitions)
 		partition.EmitIdle(IDLE_NEIGHBOR);
 }
 
 void
-Instance::LostNeighbor(gcc_unused const NeighborInfo &info)
+Instance::LostNeighbor(gcc_unused const NeighborInfo &info) noexcept
 {
 	for (auto &partition : partitions)
 		partition.EmitIdle(IDLE_NEIGHBOR);

src/Instance.hxx

@@ -139,8 +139,8 @@ private:
 
 #ifdef ENABLE_NEIGHBOR_PLUGINS
 	/* virtual methods from class NeighborListener */
-	void FoundNeighbor(const NeighborInfo &info) override;
-	void LostNeighbor(const NeighborInfo &info) override;
+	void FoundNeighbor(const NeighborInfo &info) noexcept override;
+	void LostNeighbor(const NeighborInfo &info) noexcept override;
 #endif
 
 	/* callback for #idle_monitor */

src/neighbor/Explorer.hxx

@@ -40,7 +40,7 @@ class NeighborExplorer {
 protected:
 	NeighborListener &listener;
 
-	explicit NeighborExplorer(NeighborListener &_listener)
+	explicit NeighborExplorer(NeighborListener &_listener) noexcept
 		:listener(_listener) {}
 
 public:
@@ -49,7 +49,7 @@ public:
 	/**
 	 * Free instance data.
          */
-	virtual ~NeighborExplorer() {}
+	virtual ~NeighborExplorer() noexcept {}
 
 	/**
          * Start exploring the neighborhood.

src/neighbor/Glue.cxx

@@ -30,12 +30,12 @@
 
 #include <stdexcept>
 
-NeighborGlue::Explorer::~Explorer()
+NeighborGlue::Explorer::~Explorer() noexcept
 {
 	delete explorer;
 }
 
-NeighborGlue::~NeighborGlue() {}
+NeighborGlue::~NeighborGlue() noexcept {}
 
 static NeighborExplorer *
 CreateNeighborExplorer(EventLoop &loop, NeighborListener &listener,
@@ -86,7 +86,7 @@ NeighborGlue::Open()
 }
 
 void
-NeighborGlue::Close()
+NeighborGlue::Close() noexcept
 {
 	for (auto i = explorers.begin(), end = explorers.end(); i != end; ++i)
 		i->explorer->Close();

src/neighbor/Glue.hxx

@@ -38,9 +38,11 @@ class NeighborGlue {
 	struct Explorer {
 		NeighborExplorer *const explorer;
 
-		Explorer(NeighborExplorer *_explorer):explorer(_explorer) {}
+		Explorer(NeighborExplorer *_explorer) noexcept
+			:explorer(_explorer) {}
+
 		Explorer(const Explorer &) = delete;
-		~Explorer();
+		~Explorer() noexcept;
 	};
 
 	Mutex mutex;
@@ -52,9 +54,9 @@ public:
 
 	NeighborGlue() = default;
 	NeighborGlue(const NeighborGlue &) = delete;
-	~NeighborGlue();
+	~NeighborGlue() noexcept;
 
-	bool IsEmpty() const {
+	bool IsEmpty() const noexcept {
 		return explorers.empty();
 	}
 
@@ -64,7 +66,7 @@ public:
 	void Init(EventLoop &loop, NeighborListener &listener);
 
 	void Open();
-	void Close();
+	void Close() noexcept;
 
 	/**
 	 * Get the combined list of all neighbors from all active

src/neighbor/Listener.hxx

@@ -29,8 +29,8 @@ class NeighborExplorer;
  */
 class NeighborListener {
 public:
-	virtual void FoundNeighbor(const NeighborInfo &info) = 0;
-	virtual void LostNeighbor(const NeighborInfo &info) = 0;
+	virtual void FoundNeighbor(const NeighborInfo &info) noexcept = 0;
+	virtual void LostNeighbor(const NeighborInfo &info) noexcept = 0;
 };
 
 #endif

test/run_neighbor_explorer.cxx

@@ -43,12 +43,12 @@ public:
 class MyNeighborListener final : public NeighborListener {
  public:
 	/* virtual methods from class NeighborListener */
-	virtual void FoundNeighbor(const NeighborInfo &info) override {
+	virtual void FoundNeighbor(const NeighborInfo &info) noexcept override {
 		printf("found '%s' (%s)\n",
 		       info.display_name.c_str(), info.uri.c_str());
 	}
 
-	virtual void LostNeighbor(const NeighborInfo &info) override {
+	virtual void LostNeighbor(const NeighborInfo &info) noexcept override {
 		printf("lost '%s' (%s)\n",
 		       info.display_name.c_str(), info.uri.c_str());
 	}