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VM: new iteration method each_object_each_slot() 

used by find_data_references() and dump_edges() instead of the functor structs
db4
Björn Lindqvist 2015-08-18 07:55:36 +02:00 committed by John Benediktsson
parent 59b7a50567
commit 7f545271f4
2 changed files with 25 additions and 52 deletions
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64
vm/debug.cpp
View File

@ -298,64 +298,26 @@ void factor_vm::dump_objects(ostream& out, cell type) {
each_object(object_dumper);
}
struct find_data_reference_slot_visitor {
cell look_for;
object* obj;
factor_vm* parent;
ostream& out;
find_data_reference_slot_visitor(cell look_for,
object* obj,
factor_vm* parent,
ostream& out)
: look_for(look_for), obj(obj), parent(parent), out(out) {}
void operator()(cell* scan) {
if (look_for == *scan) {
void factor_vm::find_data_references(ostream& out, cell look_for) {
auto find_data_ref_func = [&](object* obj, cell* slot) {
if (look_for == *slot) {
out << padded_address((cell)obj) << " ";
parent->print_nested_obj(out, tag_dynamic(obj), 2);
print_nested_obj(out, tag_dynamic(obj), 2);
out << endl;
}
}
};
struct dump_edges_slot_visitor {
object* obj;
factor_vm* parent;
ostream& out;
dump_edges_slot_visitor(cell, object* obj, factor_vm* parent, ostream& out)
: obj(obj), parent(parent), out(out) {}
void operator()(cell* scan) {
if (TAG(*scan) > F_TYPE)
out << (void*)tag_dynamic(obj) << " ==> " << (void*)*scan << endl;
}
};
template <typename SlotVisitor> struct data_reference_object_visitor {
cell look_for;
factor_vm* parent;
ostream& out;
data_reference_object_visitor(cell look_for, factor_vm* parent, ostream& out)
: look_for(look_for), parent(parent), out(out) {}
void operator()(object* obj) {
SlotVisitor visitor(look_for, obj, parent, out);
obj->each_slot(visitor);
}
};
void factor_vm::find_data_references(ostream& out, cell look_for) {
data_reference_object_visitor<find_data_reference_slot_visitor>
visitor(look_for, this, out);
each_object(visitor);
each_object_each_slot(find_data_ref_func);
}
void factor_vm::dump_edges(ostream& out) {
data_reference_object_visitor<dump_edges_slot_visitor> visitor(0, this, out);
each_object(visitor);
auto dump_edges_func = [&](object* obj, cell* scan) {
if (TAG(*scan) > F_TYPE) {
out << (void*)tag_dynamic(obj);
out << " ==> ";
out << (void*)*scan << endl;
}
};
each_object_each_slot(dump_edges_func);
}
struct code_block_printer {

11
vm/vm.hpp
View File

@ -330,6 +330,17 @@ struct factor_vm {
gc_off = false;
}
template <typename Iterator>
inline void each_object_each_slot(Iterator& iterator) {
auto each_object_func = [&](object* obj) {
auto each_slot_func = [&](cell* slot) {
iterator(obj, slot);
};
obj->each_slot(each_slot_func);
};
each_object(each_object_func);
}
/* the write barrier must be called any time we are potentially storing a
pointer from an older generation to a younger one */
inline void write_barrier(cell* slot_ptr) {