From 1b8c47a8b14f784f6605eee3a73713dbce6ca572 Mon Sep 17 00:00:00 2001
From: olpc user <olpc@xo-5d-f7-86.localdomain>
Date: Mon, 9 Dec 2019 20:38:22 -0800
Subject: changed level-0 allocation to use groups

---
 starts/meaning-vm/level-0/baseref.hpp     |  4 +-
 starts/meaning-vm/level-0/concept.cpp     |  1 +
 starts/meaning-vm/level-0/memorystore.cpp | 94 +++++++++++++++++++++++--------
 starts/meaning-vm/level-0/memorystore.hpp | 37 +++++++++++-
 starts/meaning-vm/level-0/ref.cpp         |  4 ++
 starts/meaning-vm/level-1/baseref.hpp     |  2 +-
 starts/meaning-vm/level-1/funcs.cpp       | 23 ++++----
 starts/meaning-vm/level-1/funcs.hpp       |  2 +-
 starts/meaning-vm/level-1/memorystore.cpp | 33 -----------
 starts/meaning-vm/level-1/memorystore.hpp | 14 -----
 starts/meaning-vm/level-1/sugar.cpp       |  9 ++-
 starts/meaning-vm/level0.cpp              | 36 +++++-------
 starts/meaning-vm/level1.cpp              |  6 ++
 13 files changed, 154 insertions(+), 111 deletions(-)
 delete mode 100644 starts/meaning-vm/level-1/memorystore.cpp
 delete mode 100644 starts/meaning-vm/level-1/memorystore.hpp

diff --git a/starts/meaning-vm/level-0/baseref.hpp b/starts/meaning-vm/level-0/baseref.hpp
index fbb7a28..69880c8 100644
--- a/starts/meaning-vm/level-0/baseref.hpp
+++ b/starts/meaning-vm/level-0/baseref.hpp
@@ -57,7 +57,7 @@ public:
 	template <typename T>
 	T& vget(ref const & type) const { return p->vget<T>(type.p); }
 	template <typename T>
-	void vset(ref const & type, T const & v) { p->set(type.p, level0::alloc(v)); }
+	void vset(ref const & type, T const & v) { p->set(type.p, level0::alloc(self, v)); }
 
 	template <typename T>
 	T& val() { return p->val<T>(); }
@@ -100,7 +100,7 @@ private:
 		bool operator!=(mutit const & other) const { return self.it != other.it; }
 
 		val & operator*() { return *(val*)&self.it.operator*(); }
-		val & operator->() { return *(val*)&self.it.operator->(); }
+		val * operator->() { return (val*)self.it.operator->(); }
 
 	private:
 		It it;
diff --git a/starts/meaning-vm/level-0/concept.cpp b/starts/meaning-vm/level-0/concept.cpp
index 9bb772d..0661edd 100644
--- a/starts/meaning-vm/level-0/concept.cpp
+++ b/starts/meaning-vm/level-0/concept.cpp
@@ -12,6 +12,7 @@ concept* concept::id()
 
 void concept::link(concept* type, concept* target)
 {
+	if (type == 0 || target == 0) { throw null_reference(); }
 	links.insert({type, target});
 }
 
diff --git a/starts/meaning-vm/level-0/memorystore.cpp b/starts/meaning-vm/level-0/memorystore.cpp
index adae8b2..61f8ec0 100644
--- a/starts/meaning-vm/level-0/memorystore.cpp
+++ b/starts/meaning-vm/level-0/memorystore.cpp
@@ -8,21 +8,66 @@
 namespace intellect {
 namespace level0 {
 
-static auto & concepts()
+static auto & index()
 {
-	static std::unordered_set<ref, std::hash<concept*>> concepts;
-	return concepts;
+	static std::unordered_set<ref, std::hash<concept*>> index;
+	return index;
 }
 
-ref alloc(std::any data) {
+
+namespace concepts {
+	ref allocator() { static ref ret = new concept(); return ret; };
+	ref allocates() { static ref ret = new concept(); return ret; };
+	ref allocations() { static ref ret = new concept(); return ret; };
+	ref level0allocations() { static ref ret = new concept(); return ret; };
+}
+
+struct init { init()
+{
+	concepts::allocator().link(concepts::allocator(), concepts::level0allocations());
+	concepts::level0allocations().link(concepts::allocates(), concepts::allocator());
+	index().insert(concepts::allocator());
+
+	concepts::allocates().link(concepts::allocator(), concepts::level0allocations());
+	concepts::level0allocations().link(concepts::allocates(), concepts::allocates());
+	index().insert(concepts::allocates());
+
+	concepts::allocations().link(concepts::allocator(), concepts::level0allocations());
+	concepts::level0allocations().link(concepts::allocates(), concepts::allocations());
+	index().insert(concepts::allocations());
+
+	concepts::level0allocations().link(concepts::allocator(), concepts::level0allocations());
+	concepts::level0allocations().link(concepts::allocates(), concepts::level0allocations());
+	index().insert(concepts::level0allocations());
+} } _init;
+
+ref alloc(ref source, std::any data)
+{
 	concept * r = new concept();
 	r->data = data;
-	concepts().insert(r);
+	alloc((ref)r, source);
+	index().insert(r);
 	return r;
 }
 
-static concept* referenced(ref r) {
-	for (ref r2 : concepts()) {
+void alloc(ref r, ref source)
+{
+	r.link(concepts::allocator(), source);
+	source.link(concepts::allocates(), r);
+}
+
+void realloc(ref r, ref newsource)
+{
+	ref oldsource = r.get(concepts::allocator());
+	alloc(r, newsource);
+	dealloc(r, oldsource);
+}
+
+static concept* referenced(ref r, ref source) {
+	for (ref r2 : index()) {
+		if (r2 == source) {
+			continue;
+		}
 		if (r2 == r) {
 			continue;
 		}
@@ -38,28 +83,33 @@ static concept* referenced(ref r) {
 	return 0;
 }
 
-void dealloc(ref r) {
-	concept * referenced = intellect::level0::referenced(r);
-	if (referenced) {
-		throw still_referenced_by(r, referenced);
+void dealloc(ref r, ref source) {
+	auto it = index().find(r);
+	if (it == index().end()) { throw no_such_concept(r); }
+
+	source.unlink(concepts::allocates(), r);
+	r.unlink(concepts::allocator(), source);
+	if (r.linked(concepts::allocator())) { return; }
+
+	index().erase(it);
+
+	auto ours = r.getAll(concepts::allocates());
+	for (auto allocation : ours) {
+		dealloc(allocation, r);
 	}
-	for (
-		auto it = concepts().begin();
-		it != concepts().end();
-		++ it)
-	{
-		if (*it == r) {
-			concepts().erase(it);
-			delete (concept*)r;
-			return;
+
+	for (auto ghost : ours) {
+		concept * referenced = intellect::level0::referenced(ghost, source);
+		if (referenced) {
+			throw still_referenced_by(ghost, referenced);
 		}
 	}
-	throw no_such_concept(r);
+	delete (concept*)r;
 }
 
 std::size_t allocated()
 {
-	return concepts().size();
+	return index().size();
 }
 
 }
diff --git a/starts/meaning-vm/level-0/memorystore.hpp b/starts/meaning-vm/level-0/memorystore.hpp
index 7843513..eff4235 100644
--- a/starts/meaning-vm/level-0/memorystore.hpp
+++ b/starts/meaning-vm/level-0/memorystore.hpp
@@ -7,8 +7,41 @@
 namespace intellect {
 namespace level0 {
 
-ref alloc(std::any data = {});
-void dealloc(ref);
+// self-reference loops are real.
+//
+// one person can feel urgent about issue A, and act on this urgency to engage
+// another person around B, who acts in a different way to someone else, eventually
+// cycling back to stress that stimulates the original person to feel more urgent
+// about issue A.
+// 	human behavior can make arbitrary positive or negative feedback loops.
+//
+// here in memory allocation, i've designed a system intended to reduce such loops
+// by encouraging my usage to be a certain way, but it still readily provides for
+// them.
+//
+// in process expansion / simple thought, we also have the issue of recursion.
+// if we trust a task to complete, and it ends up triggering itself in a subcontext,
+// we could wait forever.
+//
+// the solution to many of these things is to recognize repetition in systems.
+// we also become skeptical as things continue constantly.  we expect to develop
+// some level of understanding that they will shrink, or we stop them and try
+// something else.
+
+namespace concepts {
+
+extern ref allocator(); // link shows what is holding something alive
+extern ref allocates(); // link shows what is being held alive
+
+extern ref allocations(); // to use as a basic allocator for simple things
+extern ref level0allocations(); // allocator for concepts internal to level0
+
+}
+
+ref alloc(ref allocator, std::any data = {}); // new concept
+void alloc(ref allocated, ref allocator); // extra ownership for concept
+void realloc(ref allocated, ref allocator); // move ownership for concept to allocator
+void dealloc(ref allocated, ref allocator); // remove ownership for concept
 std::size_t allocated();
 
 }
diff --git a/starts/meaning-vm/level-0/ref.cpp b/starts/meaning-vm/level-0/ref.cpp
index d4758bd..87e911a 100644
--- a/starts/meaning-vm/level-0/ref.cpp
+++ b/starts/meaning-vm/level-0/ref.cpp
@@ -1,10 +1,12 @@
 #include "ref.hpp"
 #include "concept.hpp"
 #include "errors.hpp"
+#include "memorystore.hpp"
 
 #include <ostream>
 
 using namespace intellect::level0;
+using namespace concepts;
 
 std::string ref::dump(ref skipmarkertype, ref skipmarkertarget)
 {
@@ -13,10 +15,12 @@ std::string ref::dump(ref skipmarkertype, ref skipmarkertarget)
 	}
 	std::string ret = std::to_string((unsigned long)ptr()) + ":\n";
 	for (auto & link : self.links()) {
+		if (link.first.linked(allocator(), level0allocations())) { continue; }
 		ret += "  " + std::to_string((unsigned long)link.first.ptr()) + ": " + std::to_string((unsigned long)link.second.ptr()) + "\n"; 
 	}
 	self.link(skipmarkertype, skipmarkertarget);
 	for (auto & link : self.links()) {
+		if (link.first.linked(allocator(), level0allocations())) { continue; }
 		if (link.first == skipmarkertype && link.second == skipmarkertarget) {
 			continue;
 		}
diff --git a/starts/meaning-vm/level-1/baseref.hpp b/starts/meaning-vm/level-1/baseref.hpp
index e97db2d..5055d44 100644
--- a/starts/meaning-vm/level-1/baseref.hpp
+++ b/starts/meaning-vm/level-1/baseref.hpp
@@ -31,7 +31,7 @@ struct baseref : public level0::baseref<ref>
 	ref operator[](ref subref) const { return self.get(subref); }
 
 	template <typename T>
-	void vset(ref const & type, T const & v) { self.set(type, level1::alloc(v)); }
+	void vset(ref const & type, T const & v) { self.set(type, level1::alloc(level0::concepts::allocations(), v)); }
 
 	template <typename... Ref>
 	std::function<ref(Ref...)> & fun() { return self.template val<std::function<ref(Ref...)>>(); }
diff --git a/starts/meaning-vm/level-1/funcs.cpp b/starts/meaning-vm/level-1/funcs.cpp
index c1cf21a..cfb44b7 100644
--- a/starts/meaning-vm/level-1/funcs.cpp
+++ b/starts/meaning-vm/level-1/funcs.cpp
@@ -19,9 +19,9 @@ static auto & namestruct()
 		std::unordered_map<std::string,ref,std::hash<std::string>,std::equal_to<std::string>> conceptsByName;
 		ref nameref;
 		name_t()
-		: nameref(level0::alloc())
+		: nameref(level0::alloc(level0::concepts::allocations()))
 		{
-			level0::ref namestr = alloc((std::string)("name"));
+			level0::ref namestr = level0::alloc(nameref.ptr(), (std::string)("name"));
 			nameref.set(nameref, namestr);
 			conceptsByName.emplace(namestr.val<std::string>(), nameref);
 		}
@@ -32,9 +32,9 @@ static auto & namestruct()
 void givename(concept* con, std::string const & name)
 {
 	auto & ns = namestruct();
-	level0::ref namestr = level0::alloc(name);
+	level0::ref namestr = level0::alloc(con, name);
 	ns.conceptsByName.emplace(namestr.val<std::string>(), con);
-	con.set(ns.nameref, namestr);
+	con->set(ns.nameref, namestr);
 }
 
 concept* getnamed(std::string const & name)
@@ -44,10 +44,8 @@ concept* getnamed(std::string const & name)
 	if (res != ns.conceptsByName.end()) {
 		return res->second;
 	} else {
-		level1::ref con = level0::alloc();
-		level0::ref namestr = level0::alloc(name);
-		ns.conceptsByName.emplace(namestr.val<std::string>(), con);
-		con.set(ns.nameref, namestr);
+		level1::ref con = level0::alloc(level0::concepts::allocations());
+		givename(con, name);
 		return con.ptr();
 	}
 }
@@ -71,10 +69,9 @@ bool isa(concept* member, concept* group)
 	return false;
 }
 
-concept* alloc(std::any val)
+concept* alloc(concept* allocator, std::any val)
 {
-
-	ref ret = level0::alloc(val);
+	ref ret = level0::alloc(allocator, val);
 	std::stringstream ss;
 	ss << val.type().name() << "(";
 	if (false);
@@ -88,7 +85,7 @@ concept* alloc(std::any val)
 #undef t
 	else { ss << "?"; }
 	ss << ")";
-	ret.link(concepts::name, level0::alloc(ss.str()));
+	ret.link(concepts::name, level0::alloc(ret, ss.str()));
 	return ret;
 }
 
@@ -104,6 +101,7 @@ std::string dump(concept* what, concept* skipmarkertype, concept* skipmarkertarg
 	}
 	std::string ret;
 	for (auto & link : ref(what).links()) {
+		if (link.first.linked(level0::concepts::allocator(), level0::concepts::level0allocations())) { continue; }
 		if (link.first == concepts::name) { continue; }
 		if (ret.size() == 0) {
 			ret = ref(what).name() + ":\n";
@@ -112,6 +110,7 @@ std::string dump(concept* what, concept* skipmarkertype, concept* skipmarkertarg
 	}
 	what->link(skipmarkertype, skipmarkertarget);
 	for (auto & link : ref(what).links()) {
+		if (link.first.linked(level0::concepts::allocator(), level0::concepts::level0allocations())) { continue; }
 		if (link.first.ptr() == skipmarkertype && link.second.ptr() == skipmarkertarget) {
 			continue;
 		}
diff --git a/starts/meaning-vm/level-1/funcs.hpp b/starts/meaning-vm/level-1/funcs.hpp
index 4b53ddd..9361917 100644
--- a/starts/meaning-vm/level-1/funcs.hpp
+++ b/starts/meaning-vm/level-1/funcs.hpp
@@ -18,7 +18,7 @@ bool isa(concept* member, concept* group);
 
 concept* hyphenate(concept* a, concept* b);
 
-concept* alloc(std::any val);
+concept* alloc(concept* allocator, std::any val);
 
 std::string dump(concept * what, concept * skipmarkertype, concept * skipmarkertarget);
 
diff --git a/starts/meaning-vm/level-1/memorystore.cpp b/starts/meaning-vm/level-1/memorystore.cpp
deleted file mode 100644
index 0bd109b..0000000
--- a/starts/meaning-vm/level-1/memorystore.cpp
+++ /dev/null
@@ -1,33 +0,0 @@
-#include "memorystore.hpp"
-
-#include "concepts.hpp"
-
-#include "../level-0/memorystore.hpp"
-
-namespace intellect {
-namespace level1 {
-
-ref allocation_group("allocation-group");
-ref allocation_part("allocation-part");
-
-ref alloc(ref grp, std::any data)
-{
-	ref res = level0::alloc(data);
-	keep(res, grp);
-}
-
-void keep(ref allocated, ref grp)
-{
-	allocated.link(allocation_group, grp);
-	grp.link(allocation_part, allocated);
-}
-
-void dealloc(ref grp, ref metagroup)
-{
-
-//}
-
-std::size_t allocatedgroups();
-
-}
-}
diff --git a/starts/meaning-vm/level-1/memorystore.hpp b/starts/meaning-vm/level-1/memorystore.hpp
deleted file mode 100644
index 625dad9..0000000
--- a/starts/meaning-vm/level-1/memorystore.hpp
+++ /dev/null
@@ -1,14 +0,0 @@
-#pragma once
-
-#include "common.hpp"
-
-namespace intellect {
-namespace level1 {
-
-ref alloc(ref group, std::any data = {});
-void keep(ref allocated, ref group);
-void dealloc(ref group, ref metagroup = concepts::nothing);
-std::size_t allocatedgroups();
-
-}
-}
diff --git a/starts/meaning-vm/level-1/sugar.cpp b/starts/meaning-vm/level-1/sugar.cpp
index 24d59be..21f4001 100644
--- a/starts/meaning-vm/level-1/sugar.cpp
+++ b/starts/meaning-vm/level-1/sugar.cpp
@@ -49,15 +49,17 @@ ref movetoname(ref anonymous, ref name)
 	// information is not available at this level.
 	bool nonempty = false;
 	for (auto & l : name.links()) {
+		if (l.first.linked(level0::concepts::allocator(), level0::concepts::level0allocations())) { continue; }
 		if (l.first == concepts::name) { continue; }
 		nonempty = true;
 	}
 	if (nonempty) {
 		for (auto & link : anonymous.links()) {
 			if (link.first == concepts::is && link.second == concepts::anonymous) { continue; }
+			if (link.first.linked(level0::concepts::allocator(), level0::concepts::level0allocations())) { continue; }
 			if (link.first == concepts::name) { continue; }
 			if (!name.linked(link.first, link.second)) {
-				throw std::logic_error(name.name() + " already defined otherwise from " + anonymous.get(concepts::is).name());
+				throw std::logic_error(name.name() + " already defined otherwise from " + anonymous.getAll(concepts::is).begin()->name());
 			}
 		}
 	}
@@ -66,12 +68,13 @@ ref movetoname(ref anonymous, ref name)
 	anonymous.unlink(concepts::name, nam);
 	if (!nonempty) {
 		for (auto & l : anonymous.links()) {
+			if (l.first.linked(level0::concepts::allocator(), level0::concepts::level0allocations())) { continue; }
 			name.link(l.first, l.second);
 		}
 	}
 	anonymous.link(concepts::name, nam);
-	dealloc(anonymous);
-	dealloc(nam);
+	dealloc(anonymous, level0::concepts::allocations());
+	//dealloc(nam, level0::concepts::allocations());
 	return name;
 }
 
diff --git a/starts/meaning-vm/level0.cpp b/starts/meaning-vm/level0.cpp
index 6ff0102..86ce0cd 100644
--- a/starts/meaning-vm/level0.cpp
+++ b/starts/meaning-vm/level0.cpp
@@ -5,17 +5,21 @@
 
 using namespace intellect::level0;
 
+#define out(name) std::cout << " " #name ":" << (long)name.ptr()
+
 int main()
 {
-	ref a = alloc();
-	ref b = alloc();
-	ref c = alloc();
-	ref d = alloc();
-	ref e = alloc();
-	auto numlink = alloc();
-	auto codelink = alloc();
-
-	ref skip = alloc();
+	ref store = alloc(concepts::allocations()); out(store);
+	ref a = alloc(store); out(a);
+	ref b = alloc(store); out(b);
+	ref c = alloc(store); out(c);
+	ref d = alloc(store); out(d);
+	ref e = alloc(store); out(e);
+	auto numlink = alloc(a); out(numlink);
+	auto codelink = alloc(a); out(codelink);
+
+	ref skip = alloc(store); out(skip);
+	std::cout << std::endl;
 	
 	a.link(
 		b, c,
@@ -37,18 +41,8 @@ int main()
 	std::cout << allocated() << " allocated" << std::endl;
 
 	e.unlink(b, a);
-	auto num = a.get(numlink);
-	auto code = a.get(codelink);
-	dealloc(a);
-	dealloc(num);
-	dealloc(code);
-	dealloc(numlink);
-	dealloc(codelink);
-	dealloc(c);
-	dealloc(e);
-	dealloc(b);
-	dealloc(d);
-	dealloc(skip);
+	//dealloc(a, store);
+	dealloc(store, concepts::allocations());
 
 	std::cout << allocated() << " allocated" << std::endl;
 
diff --git a/starts/meaning-vm/level1.cpp b/starts/meaning-vm/level1.cpp
index 9498ddf..b1d06f1 100644
--- a/starts/meaning-vm/level1.cpp
+++ b/starts/meaning-vm/level1.cpp
@@ -7,6 +7,8 @@ using namespace intellect::level1::concepts;
 
 int main()
 {
+	std::cout << intellect::level0::allocated() << " allocated" << std::endl;
+
 	decls(make, linked, habit);
 	decls(needs, assumes, makes);
 	decls(not, topic);
@@ -61,5 +63,9 @@ int main()
 
 	std::cout << apple.dump("dumped", true) << std::endl;
 
+	std::cout << intellect::level0::allocated() << " allocated" << std::endl;
+	intellect::level0::dealloc(intellect::level0::concepts::allocations(), intellect::level0::concepts::level0allocations());
+	std::cout << intellect::level0::allocated() << " allocated" << std::endl;
+
 	return 0;
 }
-- 
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