void allocator_object_write_barrier(Partial_Reveal_Object* p_object, Collector* allocator)
{
if( addr_belongs_to_nos(p_object)) return;
REF* p_slot;
/* scan array object */
if (object_is_array((Partial_Reveal_Object*)p_object)) {
Partial_Reveal_Object* array = p_object;
assert(!obj_is_primitive_array(array));
I_32 array_length = vector_get_length((Vector_Handle) array);
for (int i = 0; i < array_length; i++) {
p_slot = (REF *)vector_get_element_address_ref((Vector_Handle)array, i);
if( read_slot(p_slot) != NULL && addr_belongs_to_nos(read_slot(p_slot))){
collector_remset_add_entry(allocator, (Partial_Reveal_Object**)p_slot);
}
}
return;
}
/* scan non-array object */
Partial_Reveal_Object* p_obj = (Partial_Reveal_Object*)p_object;
unsigned int num_refs = object_ref_field_num(p_obj);
int *ref_iterator = object_ref_iterator_init(p_obj);
for(unsigned int i=0; i<num_refs; i++){
p_slot = object_ref_iterator_get(ref_iterator+i, p_obj);
if( addr_belongs_to_nos(read_slot(p_slot))){
collector_remset_add_entry(allocator, (Partial_Reveal_Object**)p_slot);
}
}
return;
}
static FORCE_INLINE void scan_object(Collector* collector, Partial_Reveal_Object *p_obj)
{
assert((((POINTER_SIZE_INT)p_obj) % GC_OBJECT_ALIGNMENT) == 0);
if (!object_has_ref_field(p_obj)) return;
REF *p_ref;
/* scan array object */
if (object_is_array(p_obj)) {
Partial_Reveal_Object* array = p_obj;
assert(!obj_is_primitive_array(array));
I_32 array_length = vector_get_length((Vector_Handle) array);
for (int i = 0; i < array_length; i++) {
p_ref= (REF *)vector_get_element_address_ref((Vector_Handle) array, i);
scan_slot(collector, p_ref);
}
return; /* array can't be a reference object, directly return. */
}
/* scan non-array object */
unsigned int num_refs = object_ref_field_num(p_obj);
int *ref_iterator = object_ref_iterator_init(p_obj);
for(unsigned int i=0; i<num_refs; i++){
REF* p_ref = object_ref_iterator_get(ref_iterator+i, p_obj);
scan_slot(collector, p_ref);
}
#ifndef BUILD_IN_REFERENT
scan_weak_reference(collector, p_obj, scan_slot);
#endif
return;
}
/*<--------all (live and dead) objects scanner begin-------->*/
static FORCE_INLINE void verifier_scan_object_slots(Partial_Reveal_Object *p_obj, Heap_Verifier* heap_verifier)
{
verifier_allocation_update_info(p_obj, heap_verifier);
verify_object_header(p_obj, heap_verifier);
if (!object_has_ref_field(p_obj)) return;
REF* p_ref;
if (object_is_array(p_obj)){
Partial_Reveal_Array* array = (Partial_Reveal_Array*)p_obj;
unsigned int array_length = array->array_len;
p_ref = (REF*)((POINTER_SIZE_INT)array + (int)array_first_element_offset(array));
for (unsigned int i = 0; i < array_length; i++) {
verify_write_barrier(p_ref+i, heap_verifier);
if( read_slot(p_ref+i) != NULL) verify_all_object_slot(p_ref+i, heap_verifier);
// if(!is_unreachable_obj(p_obj)){
// verify_write_barrier(p_ref+i, heap_verifier);
// if( read_slot(p_ref+i) != NULL) verify_live_object_slot(p_ref+i, heap_verifier);
// }else{
// if( read_slot(p_ref+i) != NULL) verify_all_object_slot(p_ref+i, heap_verifier);
// }
}
}else{
unsigned int num_refs = object_ref_field_num(p_obj);
int* ref_iterator = object_ref_iterator_init(p_obj);
for(unsigned int i=0; i<num_refs; i++){
p_ref = object_ref_iterator_get(ref_iterator+i, p_obj);
verify_write_barrier(p_ref, heap_verifier);
if( read_slot(p_ref) != NULL) verify_all_object_slot(p_ref, heap_verifier);
//if(!is_unreachable_obj(p_obj)){
// verify_write_barrier(p_ref, heap_verifier);
// if( read_slot(p_ref) != NULL) verify_live_object_slot(p_ref, heap_verifier);
//}else{
// if( read_slot(p_ref) != NULL) verify_all_object_slot(p_ref, heap_verifier);
//}
}
#ifndef BUILD_IN_REFERENT
WeakReferenceType type = special_reference_type(p_obj);
if(type == NOT_REFERENCE) return;
//if(type != SOFT_REFERENCE && verifier_collect_is_minor(heap_verifier->gc_verifier)){
{
p_ref = obj_get_referent_field(p_obj);
verify_write_barrier(p_ref, heap_verifier);
if( read_slot(p_ref) != NULL) verify_all_object_slot(p_ref, heap_verifier);
//if(!is_unreachable_obj(p_obj)){
// verify_write_barrier(p_ref, heap_verifier);
// if( read_slot(p_ref) != NULL) verify_live_object_slot(p_ref, heap_verifier);
//}else{
// if( read_slot(p_ref) != NULL) verify_all_object_slot(p_ref, heap_verifier);
//}
}
#endif
}
return;
}
static FORCE_INLINE void scan_object(Collector* collector, Partial_Reveal_Object *p_obj)
{
vm_notify_obj_alive( (void *)p_obj);
assert((((POINTER_SIZE_INT)p_obj) % GC_OBJECT_ALIGNMENT) == 0);
Partial_Reveal_VTable *vtable = decode_vt(obj_get_vt(p_obj));
if(TRACE_JLC_VIA_VTABLE)
if(vtable->vtmark == VT_UNMARKED) {
vtable->vtmark = VT_MARKED;
if(obj_mark_in_vt(vtable->jlC))
collector_tracestack_push(collector, vtable->jlC);
}
if( !object_has_ref_field(p_obj) ) return;
REF *p_ref;
if (object_is_array(p_obj)) { /* scan array object */
Partial_Reveal_Array* array = (Partial_Reveal_Array*)p_obj;
unsigned int array_length = array->array_len;
p_ref = (REF *)((POINTER_SIZE_INT)array + (int)array_first_element_offset(array));
for (unsigned int i = 0; i < array_length; i++) {
scan_slot(collector, p_ref+i);
}
}else{ /* scan non-array object */
unsigned int num_refs = object_ref_field_num(p_obj);
int* ref_iterator = object_ref_iterator_init(p_obj);
for(unsigned int i=0; i<num_refs; i++){
p_ref = object_ref_iterator_get(ref_iterator+i, p_obj);
scan_slot(collector, p_ref);
}
#ifndef BUILD_IN_REFERENT
scan_weak_reference(collector, p_obj, scan_slot);
#endif
}
return;
}
/*This function is for concurrent mark.*/
static void write_barrier_rem_obj_snapshot(Managed_Object_Handle p_obj_holding_ref)
{
Mutator *mutator = (Mutator *)gc_get_tls();
REF* p_obj_slot;
if(obj_need_take_snapshot((Partial_Reveal_Object*)p_obj_holding_ref)){
if (object_is_array((Partial_Reveal_Object*)p_obj_holding_ref)) {
Partial_Reveal_Object* array = (Partial_Reveal_Object*)p_obj_holding_ref;
assert(!obj_is_primitive_array(array));
Partial_Reveal_Object* obj_to_snapshot;
I_32 array_length = vector_get_length((Vector_Handle) array);
for (int i = 0; i < array_length; i++) {
p_obj_slot = (REF*)vector_get_element_address_ref((Vector_Handle) array, i);
obj_to_snapshot = (Partial_Reveal_Object*)read_slot(p_obj_slot);
if (obj_to_snapshot != NULL)
mutator_dirtyset_add_entry(mutator, obj_to_snapshot);
}
}else{
/* scan non-array object */
Partial_Reveal_Object* p_obj = (Partial_Reveal_Object*)p_obj_holding_ref;
unsigned int num_refs = object_ref_field_num(p_obj);
int *ref_iterator = object_ref_iterator_init(p_obj);
Partial_Reveal_Object* obj_to_snapshot;
for(unsigned int i=0; i<num_refs; i++){
p_obj_slot = object_ref_iterator_get(ref_iterator+i, p_obj);
obj_to_snapshot = (Partial_Reveal_Object*)read_slot(p_obj_slot);
if (obj_to_snapshot != NULL)
mutator_dirtyset_add_entry(mutator, obj_to_snapshot);
}
if(is_reference_obj(p_obj)){
REF* p_referent_field = obj_get_referent_field(p_obj);
obj_to_snapshot = (Partial_Reveal_Object*)read_slot(p_referent_field);
if (obj_to_snapshot != NULL)
mutator_dirtyset_add_entry(mutator, obj_to_snapshot);
}
}
obj_mark_gray_in_table((Partial_Reveal_Object *) p_obj_holding_ref); // now, the black-only obj (no gray bit been set) will also be scaned by marker, here mark it to gray to prevent this, just a workaround
obj_mark_black_in_table((Partial_Reveal_Object *) p_obj_holding_ref, mutator);
obj_dirty_in_table((Partial_Reveal_Object *) p_obj_holding_ref);
}
}
static FORCE_INLINE void scan_object(Conclctor* marker, Partial_Reveal_Object *p_obj)
{
assert((((POINTER_SIZE_INT)p_obj) % GC_OBJECT_ALIGNMENT) == 0);
if(obj_is_dirty_in_table(p_obj)){
assert(obj_is_mark_black_in_table(p_obj));
return;
}
if(!object_has_ref_field(p_obj)) return;
REF *p_ref;
if(object_is_array(p_obj)){ /* scan array object */
Partial_Reveal_Array *array = (Partial_Reveal_Array*)p_obj;
unsigned int array_length = array->array_len;
p_ref = (REF *)((POINTER_SIZE_INT)array + (int)array_first_element_offset(array));
for (unsigned int i = 0; i < array_length; i++)
scan_slot((Collector*)marker, p_ref+i);
return;
}
/* scan non-array object */
unsigned int num_refs = object_ref_field_num(p_obj);
int *ref_iterator = object_ref_iterator_init(p_obj);
for(unsigned int i=0; i<num_refs; i++){
p_ref = object_ref_iterator_get(ref_iterator+i, p_obj);
scan_slot((Collector*)marker, p_ref);
}
#ifndef BUILD_IN_REFERENT
scan_weak_reference_direct((Collector*)marker, p_obj, scan_slot);
#endif
}
static FORCE_INLINE void scan_object(Heap_Verifier* heap_verifier, Partial_Reveal_Object *p_obj)
{
GC_Verifier* gc_verifier = heap_verifier->gc_verifier;
#if !defined(USE_UNIQUE_MARK_SWEEP_GC) && !defined(USE_UNIQUE_MOVE_COMPACT_GC)
if(gc_verifier->is_before_fallback_collection) {
if(obj_belongs_to_nos(p_obj) && obj_is_fw_in_oi(p_obj)){
assert(obj_get_vt(p_obj) == obj_get_vt(obj_get_fw_in_oi(p_obj)));
p_obj = obj_get_fw_in_oi(p_obj);
assert(p_obj);
}
}
#endif
if(!obj_mark_in_vt(p_obj)) return;
if( !major_is_marksweep() && p_obj >= los_boundary ){
Block_Header* block = GC_BLOCK_HEADER(p_obj);
if( heap_verifier->is_before_gc) block->num_live_objs++;
/* we can't set block->num_live_objs = 0 if !is_before_gc, because the some blocks may be freed hence not
visited after GC. So we should reset it in GC space reset functions. */
}
verify_object_header(p_obj, heap_verifier);
verifier_update_verify_info(p_obj, heap_verifier);
/*FIXME: */
if (!object_has_ref_field(p_obj)) return;
REF* p_ref;
if (object_is_array(p_obj)) {
Partial_Reveal_Array* array = (Partial_Reveal_Array*)p_obj;
unsigned int array_length = array->array_len;
p_ref = (REF*)((POINTER_SIZE_INT)array + (int)array_first_element_offset(array));
for (unsigned int i = 0; i < array_length; i++) {
scan_slot(heap_verifier, p_ref+i);
}
}else{
unsigned int num_refs = object_ref_field_num(p_obj);
int* ref_iterator = object_ref_iterator_init(p_obj);
for(unsigned int i=0; i<num_refs; i++){
p_ref = object_ref_iterator_get(ref_iterator+i, p_obj);
scan_slot(heap_verifier, p_ref);
}
#ifndef BUILD_IN_REFERENT
WeakReferenceType type = special_reference_type(p_obj);
if(type == SOFT_REFERENCE && verifier_collect_is_minor(gc_verifier)){
p_ref = obj_get_referent_field(p_obj);
scan_slot(heap_verifier, p_ref);
}
#endif
}
return;
}
