144 lines
3.8 KiB
C++
144 lines
3.8 KiB
C++
#include "master.hpp"
|
|
|
|
namespace factor {
|
|
|
|
void factor_vm::primitive_special_object() {
|
|
fixnum n = untag_fixnum(ctx->peek());
|
|
ctx->replace(special_objects[n]);
|
|
}
|
|
|
|
void factor_vm::primitive_set_special_object() {
|
|
fixnum n = untag_fixnum(ctx->pop());
|
|
cell value = ctx->pop();
|
|
special_objects[n] = value;
|
|
}
|
|
|
|
void factor_vm::primitive_identity_hashcode() {
|
|
cell tagged = ctx->peek();
|
|
object* obj = untag<object>(tagged);
|
|
ctx->replace(tag_fixnum(obj->hashcode()));
|
|
}
|
|
|
|
void factor_vm::compute_identity_hashcode(object* obj) {
|
|
object_counter++;
|
|
if (object_counter == 0)
|
|
object_counter++;
|
|
obj->set_hashcode((cell)obj ^ object_counter);
|
|
}
|
|
|
|
void factor_vm::primitive_compute_identity_hashcode() {
|
|
object* obj = untag<object>(ctx->pop());
|
|
compute_identity_hashcode(obj);
|
|
}
|
|
|
|
void factor_vm::primitive_set_slot() {
|
|
fixnum slot = untag_fixnum(ctx->pop());
|
|
object* obj = untag<object>(ctx->pop());
|
|
cell value = ctx->pop();
|
|
|
|
cell* slot_ptr = &obj->slots()[slot];
|
|
*slot_ptr = value;
|
|
write_barrier(slot_ptr);
|
|
}
|
|
|
|
/* Allocates memory */
|
|
cell factor_vm::clone_object(cell obj_) {
|
|
data_root<object> obj(obj_, this);
|
|
|
|
if (immediate_p(obj.value()))
|
|
return obj.value();
|
|
else {
|
|
cell size = object_size(obj.value());
|
|
object* new_obj = allot_object(obj.type(), size);
|
|
memcpy(new_obj, obj.untagged(), size);
|
|
new_obj->set_hashcode(0);
|
|
return tag_dynamic(new_obj);
|
|
}
|
|
}
|
|
|
|
/* Allocates memory */
|
|
void factor_vm::primitive_clone() { ctx->replace(clone_object(ctx->peek())); }
|
|
|
|
/* Size of the object pointed to by a tagged pointer */
|
|
cell factor_vm::object_size(cell tagged) {
|
|
if (immediate_p(tagged))
|
|
return 0;
|
|
else
|
|
return untag<object>(tagged)->size();
|
|
}
|
|
|
|
/* Allocates memory */
|
|
void factor_vm::primitive_size() {
|
|
ctx->replace(from_unsigned_cell(object_size(ctx->peek())));
|
|
}
|
|
|
|
struct slot_become_fixup : no_fixup {
|
|
std::map<object*, object*>* become_map;
|
|
|
|
slot_become_fixup(std::map<object*, object*>* become_map)
|
|
: become_map(become_map) {}
|
|
|
|
object* fixup_data(object* old) {
|
|
std::map<object*, object*>::const_iterator iter = become_map->find(old);
|
|
if (iter != become_map->end())
|
|
return iter->second;
|
|
else
|
|
return old;
|
|
}
|
|
};
|
|
|
|
/* classes.tuple uses this to reshape tuples; tools.deploy.shaker uses this
|
|
to coalesce equal but distinct quotations and wrappers. */
|
|
/* Calls gc */
|
|
void factor_vm::primitive_become() {
|
|
primitive_minor_gc();
|
|
array* new_objects = untag_check<array>(ctx->pop());
|
|
array* old_objects = untag_check<array>(ctx->pop());
|
|
|
|
cell capacity = array_capacity(new_objects);
|
|
if (capacity != array_capacity(old_objects))
|
|
critical_error("bad parameters to become", 0);
|
|
|
|
/* Build the forwarding map */
|
|
std::map<object*, object*> become_map;
|
|
|
|
for (cell i = 0; i < capacity; i++) {
|
|
tagged<object> old_obj(array_nth(old_objects, i));
|
|
tagged<object> new_obj(array_nth(new_objects, i));
|
|
|
|
if (old_obj != new_obj)
|
|
become_map[old_obj.untagged()] = new_obj.untagged();
|
|
}
|
|
|
|
/* Update all references to old objects to point to new objects */
|
|
{
|
|
slot_visitor<slot_become_fixup> visitor(this,
|
|
slot_become_fixup(&become_map));
|
|
visitor.visit_all_roots();
|
|
|
|
auto object_become_visitor = [&](object* obj) {
|
|
visitor.visit_slots(obj);
|
|
};
|
|
each_object(object_become_visitor);
|
|
|
|
auto code_block_become_visitor = [&](code_block* compiled, cell size) {
|
|
visitor.visit_code_block_objects(compiled);
|
|
visitor.visit_embedded_literals(compiled);
|
|
};
|
|
each_code_block(code_block_become_visitor);
|
|
}
|
|
|
|
/* Since we may have introduced old->new references, need to revisit
|
|
all objects and code blocks on a minor GC. */
|
|
data->mark_all_cards();
|
|
|
|
{
|
|
auto code_block_visitor = [&](code_block* compiled, cell size) {
|
|
code->write_barrier(compiled);
|
|
};
|
|
each_code_block(code_block_visitor);
|
|
}
|
|
}
|
|
|
|
}
|