view: Save their state

src/emu/device.cpp

@@ -522,6 +522,7 @@ bool device_t::findit(validity_checker *valid) const
 	return allfound;
 }
 
+
 //-------------------------------------------------
 //  resolve_pre_map - find objects that may be used
 //  in memory maps
@@ -534,6 +535,7 @@ void device_t::resolve_pre_map()
 		m_string_buffer.reserve(1024);
 }
 
+
 //-------------------------------------------------
 //  resolve - find objects
 //-------------------------------------------------
@@ -549,6 +551,16 @@ void device_t::resolve_post_map()
 }
 
 
+//-------------------------------------------------
+//  view_register - register a view for future state saving
+//-------------------------------------------------
+
+void device_t::view_register(memory_view *view)
+{
+	m_viewlist.push_back(view);
+}
+
+
 //-------------------------------------------------
 //  start - start a device
 //-------------------------------------------------
@@ -599,6 +611,11 @@ void device_t::start()
 	save_item(NAME(m_unscaled_clock));
 	save_item(NAME(m_clock_scale));
 
+	// have the views register their state
+	logerror("Registering %d views\n", int(m_viewlist.size()));
+	for(memory_view *view : m_viewlist)
+		view->register_state();
+
 	// we're now officially started
 	m_started = true;
 }

src/emu/device.h

@@ -644,6 +644,7 @@ public:
 	// misc
 	template <typename Format, typename... Params> void popmessage(Format &&fmt, Params &&... args) const;
 	template <typename Format, typename... Params> void logerror(Format &&fmt, Params &&... args) const;
+	void view_register(memory_view *view);
 
 protected:
 	// miscellaneous helpers
@@ -836,6 +837,7 @@ private:
 	finder_base *           m_auto_finder_list;     // list of objects to auto-find
 	mutable std::vector<rom_entry>  m_rom_entries;
 	std::list<devcb_base *> m_callbacks;
+	std::vector<memory_view *> m_viewlist;          // list of views
 
 	// string formatting buffer for logerror
 	mutable util::ovectorstream m_string_buffer;

src/emu/emumem.cpp

@@ -445,7 +445,6 @@ memory_bank *memory_manager::bank_find(std::string name)
 }
 
 
-
 //**************************************************************************
 //  ADDRESS SPACE CONFIG
 //**************************************************************************

src/emu/emumem.h

@@ -1811,6 +1811,7 @@ class memory_view
 	friend class memory_view_entry;
 	friend class address_map_entry;
 	friend class address_map;
+	friend class device_t;
 
 	DISABLE_COPYING(memory_view);
 
@@ -1868,6 +1869,7 @@ private:
 	std::pair<handler_entry *, handler_entry *> make_handlers(address_space &space, offs_t addrstart, offs_t addrend);
 	void make_subdispatch(std::string context);
 	int id_to_slot(int id) const;
+	void register_state();
 };
 
 
@@ -1918,10 +1920,9 @@ private:
 	running_machine &           m_machine;              // reference to the machine
 
 	std::vector<std::unique_ptr<void, stdlib_deleter>>               m_datablocks;           // list of memory blocks to free on exit
-	std::unordered_map<std::string, std::unique_ptr<memory_bank>>    m_banklist;             // data gathered for each bank
-	std::unordered_map<std::string, std::unique_ptr<memory_share>>   m_sharelist;            // map for share lookups
-	std::unordered_map<std::string, std::unique_ptr<memory_region>>  m_regionlist;           // list of memory regions
-
+	std::unordered_map<std::string, std::unique_ptr<memory_bank>>    m_banklist;             // map of banks
+	std::unordered_map<std::string, std::unique_ptr<memory_share>>   m_sharelist;            // map of shares
+	std::unordered_map<std::string, std::unique_ptr<memory_region>>  m_regionlist;           // map of memory regions
 
 	// Allocate the address spaces
 	void allocate(device_memory_interface &memory);

src/emu/emumem_mview.cpp

@@ -608,6 +608,14 @@ std::string memory_view::memory_view_entry::key() const
 
 memory_view::memory_view(device_t &device, std::string name) : m_device(device), m_name(name), m_config(nullptr), m_addrstart(0), m_addrend(0), m_space(nullptr), m_handler_read(nullptr), m_handler_write(nullptr), m_cur_id(-1), m_cur_slot(-1)
 {
+	device.view_register(this);
+}
+
+void memory_view::register_state()
+{
+	m_device.machine().save().save_item(&m_device, "view", m_name.c_str(), 0, NAME(m_cur_slot));
+	m_device.machine().save().save_item(&m_device, "view", m_name.c_str(), 0, NAME(m_cur_id));
+	m_device.machine().save().register_postload(save_prepost_delegate(NAME([this]() { m_select_a(m_cur_id); })));
 }
 
 void memory_view::disable()