/* Look at this class and it's superclass contents (which includes
* included modules) and calculate out how to allocate the slots.
*
* This locks the class so that construction is serialized.
*/
void Class::auto_pack(STATE, GCToken gct) {
Class* self = this;
OnStack<1> os(state, self);
hard_lock(state, gct);
// If another thread did this work while we were waiting on the lock,
// don't redo it.
if(self->type_info_->type == PackedObject::type) {
hard_unlock(state, gct);
return;
}
size_t slots = 0;
LookupTable* lt = LookupTable::create(state);
// If autopacking is enabled, figure out how many slots to use.
if(state->shared().config.gc_autopack) {
Module* mod = self;
int slot = 0;
while(!mod->nil_p()) {
Array* info = 0;
if(Class* cls = try_as<Class>(mod)) {
info = cls->seen_ivars();
} else if(IncludedModule* im = try_as<IncludedModule>(mod)) {
info = im->module()->seen_ivars();
}
if(info && !info->nil_p()) {
for(size_t i = 0; i < info->size(); i++) {
if(Symbol* sym = try_as<Symbol>(info->get(state, i))) {
bool found = false;
lt->fetch(state, sym, &found);
if(!found) {
lt->store(state, sym, Fixnum::from(slot++));
}
}
// Limit the number of packed ivars to 25.
if(slot > 25) break;
}
}
mod = mod->superclass();
}
slots = lt->entries()->to_native();
}
packed_size_ = sizeof(Object) + (slots * sizeof(Object*));
self->packed_ivar_info(state, lt);
self->set_object_type(state, PackedObject::type);
self->hard_unlock(state, gct);
}
void test_fetch_returns_given_when_not_found() {
TS_ASSERT_EQUALS(as<Integer>(tbl->entries())->to_native(), 0);
tbl->store(state, cNil, Fixnum::from(47));
TS_ASSERT_EQUALS(as<Integer>(tbl->entries())->to_native(), 1);
Object* out = tbl->fetch(state, cTrue, cUndef);
TS_ASSERT_EQUALS(cUndef, out);
}
void test_fetch_returns_found() {
TS_ASSERT_EQUALS(as<Integer>(tbl->entries())->to_native(), 0);
tbl->store(state, Qnil, Fixnum::from(47));
TS_ASSERT_EQUALS(as<Integer>(tbl->entries())->to_native(), 1);
Object* out = tbl->fetch(state, Qnil, Qundef);
TS_ASSERT_EQUALS(as<Integer>(out)->to_native(), 47);
}
void test_to_lookuptable() {
LookupTable* lt;
Object* key = Fixnum::from(1);
Object* val = Fixnum::from(2);
tbl->put(state, 2, key);
tbl->put(state, 3, val);
lt = tbl->to_lookuptable(state);
TS_ASSERT_EQUALS(lt->fetch(state, key), val);
}
Object* CallFrame::find_breakpoint(STATE) {
if(!compiled_code) return 0;
LookupTable* tbl = compiled_code->breakpoints();
if(tbl->nil_p()) return 0;
bool found = false;
Object* obj = tbl->fetch(state, Fixnum::from(ip()), &found);
if(found) return obj;
return 0;
}
Object* PackedObject::set_packed_ivar(STATE, Symbol* sym, Object* val) {
LookupTable* tbl = this->reference_class()->packed_ivar_info();
bool found = false;
Fixnum* which = try_as<Fixnum>(tbl->fetch(state, sym, &found));
if(!found) {
return set_table_ivar(state, sym, val);
}
body_as_array()[which->to_native()] = val;
if(val->reference_p()) write_barrier(state, val);
return val;
}
Object* PackedObject::packed_ivar_defined(STATE, Symbol* sym) {
LookupTable* tbl = this->reference_class()->packed_ivar_info();
bool found = false;
Fixnum* which = try_as<Fixnum>(tbl->fetch(state, sym, &found));
if(!found) {
return table_ivar_defined(state, sym);
}
Object* obj = body_as_array()[which->to_native()];
if(obj == Qundef) return Qfalse;
return Qtrue;
}
Object* PackedObject::get_packed_ivar(STATE, Symbol* sym) {
LookupTable* tbl = this->reference_class()->packed_ivar_info();
assert(tbl && !tbl->nil_p());
Fixnum* which = try_as<Fixnum>(tbl->fetch(state, sym));
if(!which) {
return get_table_ivar(state, sym);
}
Object* obj = body_as_array()[which->to_native()];
if(obj == Qundef) return Qnil;
return obj;
}
void Transcoding::declare(STATE, const char* from, const char* to, const char* lib) {
LookupTable* map = Encoding::transcoding_map(state);
Object* obj = map->fetch(state, encoding_symbol(state, from));
LookupTable* table;
if(obj->nil_p()) {
table = LookupTable::create(state);
map->store(state, encoding_symbol(state, from), table);
} else {
table = as<LookupTable>(obj);
}
table->store(state, encoding_symbol(state, to), String::create(state, lib));
}
void PackedObject::add_packed_ivars(STATE, Array* ary) {
LookupTable* tbl = this->reference_class()->packed_ivar_info();
LookupTable::iterator i(tbl);
while(i.advance()) {
Object* key = i.key();
if(Fixnum* which = try_as<Fixnum>(tbl->fetch(state, key))) {
if(body_as_array()[which->to_native()] != Qundef) {
ary->append(state, key);
}
}
}
}
void test_remove() {
Object* k = Fixnum::from(47);
tbl->store(state, k, cTrue);
Object* out = tbl->find(state, k);
TS_ASSERT_EQUALS(out, cTrue);
out = tbl->remove(state, k);
TS_ASSERT_EQUALS(out, cTrue);
TS_ASSERT_EQUALS(as<Integer>(tbl->entries())->to_native(), 0);
out = tbl->fetch(state, k);
TS_ASSERT_EQUALS(out, cNil);
}
void Transcoding::define(STATE, OnigTranscodingType* tr) {
LookupTable* map = Encoding::transcoding_map(state);
Object* obj = map->fetch(state, encoding_symbol(state, tr->src_encoding));
LookupTable* table;
if(obj->nil_p()) {
table = LookupTable::create(state);
map->store(state, encoding_symbol(state, tr->src_encoding), table);
} else {
table = as<LookupTable>(obj);
}
Transcoding* t = Transcoding::create(state, tr);
table->store(state, encoding_symbol(state, tr->dst_encoding), t);
}
void PackedObject::add_packed_ivars(STATE, Array* ary) {
LookupTable* tbl = this->reference_class()->packed_ivar_info();
assert(tbl && !tbl->nil_p());
Array* keys = tbl->all_keys(state);
for(size_t i = 0; i < keys->size(); i++) {
Object* key = keys->get(state, i);
if(Fixnum* which = try_as<Fixnum>(tbl->fetch(state, key))) {
if(body_as_array()[which->to_native()] != Qundef) {
ary->append(state, key);
}
}
}
}
Object* PackedObject::packed_ivar_delete(STATE, Symbol* sym, bool* removed) {
LookupTable* tbl = this->reference_class()->packed_ivar_info();
bool found = false;
Fixnum* which = try_as<Fixnum>(tbl->fetch(state, sym, &found));
if(!found) {
return del_table_ivar(state, sym, removed);
}
if(removed) *removed = true;
Object* val = body_as_array()[which->to_native()];
body_as_array()[which->to_native()] = Qundef;
return val;
}
VALUE rb_protect_inspect(VALUE (*func)(VALUE a, VALUE b), VALUE h_obj, VALUE h_arg) {
NativeMethodEnvironment* env = NativeMethodEnvironment::get();
STATE = env->state();
Thread* thr = Thread::current(state);
LookupTable* rectbl = thr->recursive_objects();
Object* obj = env->get_object(h_obj);
Object* id = obj->id(state);
bool found = false;
rectbl->fetch(state, id, &found);
if(found) {
return (*func)(h_obj, h_arg);
}
rectbl->store(state, id, cTrue);
VALUE ret = Qnil;
ExceptionPoint ep(env);
PLACE_EXCEPTION_POINT(ep);
bool unwinding = false;
if(unlikely(ep.jumped_to())) {
unwinding = true;
} else {
ret = (*func)(h_obj, h_arg);
}
ep.pop(env);
// Get the thread and table again, the GC might have fun.
thr = Thread::current(state);
rectbl = thr->recursive_objects();
obj = env->get_object(h_obj);
id = obj->id(state);
rectbl->remove(state, id);
if(unwinding) env->current_ep()->return_to(env);
return ret;
}
VALUE rb_inspecting_p(VALUE h_obj) {
NativeMethodEnvironment* env = NativeMethodEnvironment::get();
STATE = env->state();
Thread* thr = Thread::current(state);
LookupTable* rectbl = thr->recursive_objects();
Object* obj = env->get_object(h_obj);
Object* id = obj->id(state);
bool found = false;
rectbl->fetch(state, id, &found);
if(found) return Qtrue;
return Qfalse;
}
