Various netlist fixes:

- minor include cleanup
- fix a memory hole (caused by assign operators)
- more C++.

src/lib/netlist/nl_base.cpp

@@ -803,37 +803,6 @@ analog_net_t::analog_net_t(netlist_t &nl, const pstring &aname, detail::core_ter
 {
 }
 
-bool analog_net_t::already_processed(std::vector<list_t> &groups)
-{
-	if (isRailNet())
-		return true;
-	for (auto & grp : groups)
-	{
-		if (plib::container::contains(grp, this))
-			return true;
-	}
-	return false;
-}
-
-void analog_net_t::process_net(std::vector<list_t> &groups)
-{
-	if (num_cons() == 0)
-		return;
-	/* add the net */
-	groups.back().push_back(this);
-	for (auto &p : m_core_terms)
-	{
-		if (p->is_type(terminal_t::TERMINAL))
-		{
-			terminal_t *pt = static_cast<terminal_t *>(p);
-			analog_net_t *other_net = &pt->m_otherterm->net();
-			if (!other_net->already_processed(groups))
-				other_net->process_net(groups);
-		}
-	}
-}
-
-
 // ----------------------------------------------------------------------------------------
 // core_terminal_t
 // ----------------------------------------------------------------------------------------

src/lib/netlist/nl_base.h

@@ -17,6 +17,7 @@
 
 #include "nl_lists.h"
 #include "nl_time.h"
+#include "plib/palloc.h"
 #include "plib/pdynlib.h"
 #include "plib/pstate.h"
 #include "plib/pfmtlog.h"
@@ -694,8 +695,6 @@ namespace netlist
 
 		void rebuild_list();     /* rebuild m_list after a load */
 
-		void move_connections(net_t *new_net);
-
 		std::vector<core_terminal_t *> m_core_terms; // save post-start m_list ...
 
 	protected:
@@ -707,6 +706,8 @@ namespace netlist
 		state_var_u8             m_in_queue;    /* 0: not in queue, 1: in queue, 2: last was taken */
 
 	private:
+		void move_connections(net_t *new_net);
+
 		plib::linkedlist_t<core_terminal_t> m_list_active;
 		core_terminal_t * m_railterminal;
 
@@ -750,7 +751,7 @@ namespace netlist
 		/* internal state support
 		 * FIXME: get rid of this and implement export/import in MAME
 		 */
-			netlist_sig_t &Q_state_ptr() { return m_cur_Q; }
+		netlist_sig_t &Q_state_ptr() { return m_cur_Q; }
 
 	protected:
 	private:
@@ -772,12 +773,9 @@ namespace netlist
 		nl_double &Q_Analog_state_ptr() { return m_cur_Analog; }
 
 		//FIXME: needed by current solver code
-		devices::matrix_solver_t *solver() { return m_solver; }
+		devices::matrix_solver_t *solver() const { return m_solver; }
 		void set_solver(devices::matrix_solver_t *solver) { m_solver = solver; }
 
-		bool already_processed(std::vector<list_t> &groups);
-		void process_net(std::vector<list_t> &groups);
-
 	private:
 		devices::matrix_solver_t *m_solver;
 	};

src/lib/netlist/nl_factory.h

@@ -12,6 +12,7 @@
 #include <type_traits>
 
 #include "nl_config.h"
+#include "plib/palloc.h"
 #include "plib/plists.h"
 #include "plib/putil.h"
 #include "nl_base.h"

src/lib/netlist/nl_setup.cpp

@@ -678,8 +678,8 @@ void setup_t::resolve_inputs()
 	int tries = 100;
 	while (m_links.size() > 0 && tries >  0) // FIXME: convert into constant
 	{
-		auto li = m_links.begin();
-		while (li != m_links.end())
+
+		for (auto li = m_links.begin(); li != m_links.end(); )
 		{
 			const pstring t1s = li->first;
 			const pstring t2s = li->second;
@@ -703,18 +703,20 @@ void setup_t::resolve_inputs()
 
 	log().verbose("deleting empty nets ...");
 
-	// delete empty nets ... and save m_list ...
+	// delete empty nets
 
-	for (auto net = netlist().m_nets.begin(); net != netlist().m_nets.end();)
-	{
-		if (net->get()->num_cons() == 0)
-		{
-			log().verbose("Deleting net {1} ...", net->get()->name());
-			net = netlist().m_nets.erase(net);
-		}
-		else
-			++net;
-	}
+	netlist().m_nets.erase(
+			std::remove_if(netlist().m_nets.begin(), netlist().m_nets.end(),
+					[](plib::owned_ptr<detail::net_t> &x)
+					{
+						if (x->num_cons() == 0)
+						{
+							x->netlist().log().verbose("Deleting net {1} ...", x->name());
+							return true;
+						}
+						else
+							return false;
+					}), netlist().m_nets.end());
 
 	pstring errstr("");
 

src/lib/netlist/nl_setup.h

@@ -14,7 +14,6 @@
 #include <vector>
 
 #include "plib/pstring.h"
-#include "plib/palloc.h"
 #include "plib/pfmtlog.h"
 #include "plib/pstream.h"
 #include "plib/putil.h"

src/lib/netlist/plib/palloc.cpp

@@ -64,7 +64,9 @@ mempool::~mempool()
 	for (auto & b : m_blocks)
 	{
 		if (b.m_num_alloc != 0)
-			fprintf(stderr, "Found block with dangling allocations\n");
+		{
+			fprintf(stderr, "Found block with %d dangling allocations\n", (int) b.m_num_alloc);
+		}
 		delete b.data;
 	}
 	m_blocks.clear();
@@ -122,8 +124,8 @@ void mempool::free(void *ptr)
 		fprintf(stderr, "Argh .. double free\n");
 	else
 	{
-		b->m_free = m_min_alloc;
-		b->cur_ptr = b->data;
+		//b->m_free = m_min_alloc;
+		//b->cur_ptr = b->data;
 	}
 	b->m_num_alloc--;
 }

src/lib/netlist/plib/palloc.h

@@ -117,14 +117,19 @@ public:
 	{ }
 	owned_ptr(const owned_ptr &r) = delete;
 	owned_ptr & operator =(owned_ptr &r) = delete;
-	owned_ptr & operator =(owned_ptr &&r)
+
+	template<typename DC>
+	owned_ptr & operator =(owned_ptr<DC> &&r)
 	{
+		if (m_is_owned && (m_ptr != nullptr))
+			delete m_ptr;
 		m_is_owned = r.m_is_owned;
 		m_ptr = r.m_ptr;
 		r.m_is_owned = false;
 		r.m_ptr = nullptr;
 		return *this;
 	}
+
 	owned_ptr(owned_ptr &&r)
 	{
 		m_is_owned = r.m_is_owned;
@@ -143,7 +148,7 @@ public:
 
 	~owned_ptr()
 	{
-		if (m_is_owned && m_ptr != nullptr)
+		if (m_is_owned && (m_ptr != nullptr))
 			delete m_ptr;
 		m_is_owned = false;
 		m_ptr = nullptr;
@@ -164,25 +169,16 @@ public:
 		a.m_ptr = new SC(std::forward<Args>(args)...);
 		return std::move(a);
 	}
-	void release()
+	SC * release()
 	{
+		SC *tmp = m_ptr;
 		m_is_owned = false;
 		m_ptr = nullptr;
+		return tmp;
 	}
 
 	bool is_owned() const { return m_is_owned; }
 
-#if 1
-	template<typename DC>
-	owned_ptr & operator =(owned_ptr<DC> &&r)
-	{
-		m_is_owned = r.m_is_owned;
-		m_ptr = r.m_ptr;
-		r.m_is_owned = false;
-		r.m_ptr = nullptr;
-		return *this;
-	}
-#endif
 	SC * operator ->() const { return m_ptr; }
 	SC & operator *() const { return *m_ptr; }
 	SC * get() const { return m_ptr; }

src/lib/netlist/plib/plists.h

@@ -15,7 +15,6 @@
 #include <type_traits>
 #include <cmath>
 
-#include "palloc.h"
 #include "pstring.h"
 
 namespace plib {

src/lib/netlist/plib/pparser.cpp

@@ -8,6 +8,7 @@
 #include <cstdarg>
 
 #include "pparser.h"
+#include "plib/palloc.h"
 
 namespace plib {
 // ----------------------------------------------------------------------------------------

src/lib/netlist/plib/pstate.cpp

@@ -6,6 +6,7 @@
  */
 
 #include "pstate.h"
+#include "palloc.h"
 
 namespace plib {
 state_manager_t::state_manager_t()

src/lib/netlist/plib/pstream.h

@@ -12,7 +12,6 @@
 
 #include "pconfig.h"
 #include "pstring.h"
-#include "palloc.h"
 #include "pfmtlog.h"
 
 namespace plib {

src/lib/netlist/solver/nld_solver.cpp

@@ -157,9 +157,6 @@ void matrix_solver_t::setup_base(analog_net_t::list_t &nets)
 
 						if (net_proxy_output == nullptr)
 						{
-							//net_proxy_output = palloc(analog_output_t(*this,
-							//      this->name() + "." + plib::pfmt("m{1}")(m_inps.size())));
-
 							auto net_proxy_output_u = plib::make_unique<proxied_analog_output_t>(*this, this->name() + "." + plib::pfmt("m{1}")(m_inps.size()));
 							net_proxy_output = net_proxy_output_u.get();
 							m_inps.push_back(std::move(net_proxy_output_u));
@@ -691,9 +688,61 @@ std::unique_ptr<matrix_solver_t> NETLIB_NAME(solver)::create_solver(unsigned siz
 	}
 }
 
+struct net_splitter
+{
+
+	bool already_processed(analog_net_t *n)
+	{
+		if (n->isRailNet())
+			return true;
+		for (auto & grp : groups)
+			if (plib::container::contains(grp, n))
+				return true;
+		return false;
+	}
+
+	void process_net(analog_net_t *n)
+	{
+		if (n->num_cons() == 0)
+			return;
+		/* add the net */
+		groups.back().push_back(n);
+		for (auto &p : n->m_core_terms)
+		{
+			if (p->is_type(terminal_t::TERMINAL))
+			{
+				terminal_t *pt = static_cast<terminal_t *>(p);
+				analog_net_t *other_net = &pt->m_otherterm->net();
+				if (!already_processed(other_net))
+					process_net(other_net);
+			}
+		}
+	}
+
+	void run(netlist_t &netlist)
+	{
+		for (auto & net : netlist.m_nets)
+		{
+			netlist.log().debug("processing {1}\n", net->name());
+			if (!net->isRailNet() && net->num_cons() > 0)
+			{
+				netlist.log().debug("   ==> not a rail net\n");
+				/* Must be an analog net */
+				analog_net_t *n = static_cast<analog_net_t *>(net.get());
+				if (!already_processed(n))
+				{
+					groups.push_back(analog_net_t::list_t());
+					process_net(n);
+				}
+			}
+		}
+	}
+
+	std::vector<analog_net_t::list_t> groups;
+};
+
 void NETLIB_NAME(solver)::post_start()
 {
-	std::vector<analog_net_t::list_t> groups;
 	const bool use_specific = true;
 
 	m_params.m_pivot = m_pivot();
@@ -729,25 +778,14 @@ void NETLIB_NAME(solver)::post_start()
 
 	netlist().log().verbose("Scanning net groups ...");
 	// determine net groups
-	for (auto & net : netlist().m_nets)
-	{
-		netlist().log().debug("processing {1}\n", net->name());
-		if (!net->isRailNet())
-		{
-			netlist().log().debug("   ==> not a rail net\n");
-			/* Must be an analog net */
-			analog_net_t *n = static_cast<analog_net_t *>(net.get());
-			if (!n->already_processed(groups))
-			{
-				groups.push_back(analog_net_t::list_t());
-				n->process_net(groups);
-			}
-		}
-	}
+
+	net_splitter splitter;
+
+	splitter.run(netlist());
 
 	// setup the solvers
-	netlist().log().verbose("Found {1} net groups in {2} nets\n", groups.size(), netlist().m_nets.size());
-	for (auto & grp : groups)
+	netlist().log().verbose("Found {1} net groups in {2} nets\n", splitter.groups.size(), netlist().m_nets.size());
+	for (auto & grp : splitter.groups)
 	{
 		std::unique_ptr<matrix_solver_t> ms;
 		unsigned net_count = static_cast<unsigned>(grp.size());

src/lib/netlist/tools/nl_convert.cpp

@@ -9,6 +9,7 @@
 #include <cstdio>
 #include <cmath>
 #include "nl_convert.h"
+#include "plib/palloc.h"
 
 
 /*-------------------------------------------------