void lspace_compute_object_target(Collector* collector, Lspace* lspace)
{
void* dest_addr = lspace->heap_start;
unsigned int iterate_index = 0;
Partial_Reveal_Object* p_obj = lspace_get_first_marked_object(lspace, &iterate_index);
assert(!collector->rem_set);
collector->rem_set = free_set_pool_get_entry(collector->gc->metadata);
#ifdef USE_32BITS_HASHCODE
collector->hashcode_set = free_set_pool_get_entry(collector->gc->metadata);
#endif
#ifdef GC_GEN_STATS
GC_Gen_Collector_Stats* stats = (GC_Gen_Collector_Stats*)collector->stats;
#endif
while( p_obj ){
assert( obj_is_marked_in_vt(p_obj));
unsigned int obj_size = vm_object_size(p_obj);
#ifdef GC_GEN_STATS
gc_gen_collector_update_moved_los_obj_stats_major(stats, vm_object_size(p_obj));
#endif
assert(((POINTER_SIZE_INT)dest_addr + obj_size) <= (POINTER_SIZE_INT)lspace->heap_end);
#ifdef USE_32BITS_HASHCODE
obj_size += hashcode_is_attached(p_obj)? GC_OBJECT_ALIGNMENT : 0 ;
Obj_Info_Type obj_info = slide_compact_process_hashcode(p_obj, dest_addr, &obj_size, collector, null, null);
#else
Obj_Info_Type obj_info = get_obj_info_raw(p_obj);
#endif
if( obj_info != 0 ) {
collector_remset_add_entry(collector, (Partial_Reveal_Object **)dest_addr);
collector_remset_add_entry(collector, (Partial_Reveal_Object **)(POINTER_SIZE_INT)obj_info);
}
obj_set_fw_in_oi(p_obj, dest_addr);
dest_addr = (void *)ALIGN_UP_TO_KILO(((POINTER_SIZE_INT) dest_addr + obj_size));
p_obj = lspace_get_next_marked_object(lspace, &iterate_index);
}
pool_put_entry(collector->gc->metadata->collector_remset_pool, collector->rem_set);
collector->rem_set = NULL;
#ifdef USE_32BITS_HASHCODE
pool_put_entry(collector->gc->metadata->collector_hashcode_pool, collector->hashcode_set);
collector->hashcode_set = NULL;
#endif
lspace->scompact_fa_start = dest_addr;
lspace->scompact_fa_end= lspace->heap_end;
return;
}
static void mspace_compute_object_target(Collector* collector, Mspace* mspace)
{
Block_Header *curr_block = collector->cur_compact_block;
Block_Header *dest_block = collector->cur_target_block;
Block_Header *local_last_dest = dest_block;
void *dest_addr = dest_block->base;
Block_Header *last_src;
#ifdef USE_32BITS_HASHCODE
Hashcode_Buf* old_hashcode_buf = NULL;
Hashcode_Buf* new_hashcode_buf = hashcode_buf_create();
hashcode_buf_init(new_hashcode_buf);
#endif
assert(!collector->rem_set);
collector->rem_set = free_set_pool_get_entry(collector->gc->metadata);
#ifdef USE_32BITS_HASHCODE
collector->hashcode_set = free_set_pool_get_entry(collector->gc->metadata);
#endif
#ifdef GC_GEN_STATS
GC_Gen_Collector_Stats* stats = (GC_Gen_Collector_Stats*)collector->stats;
#endif
while( curr_block ) {
void* start_pos;
Partial_Reveal_Object *first_obj = block_get_first_marked_obj_prefetch_next(curr_block, &start_pos);
if(first_obj) {
++curr_block->dest_counter;
if(!dest_block->src)
dest_block->src = first_obj;
else
last_src->next_src = first_obj;
last_src = curr_block;
}
Partial_Reveal_Object* p_obj = first_obj;
while( p_obj ) {
assert( obj_is_marked_in_vt(p_obj));
unsigned int obj_size = (unsigned int)((POINTER_SIZE_INT)start_pos - (POINTER_SIZE_INT)p_obj);
#ifdef GC_GEN_STATS
gc_gen_collector_update_moved_nos_mos_obj_stats_major(stats, obj_size);
#endif
Obj_Info_Type obj_info = get_obj_info(p_obj);
unsigned int obj_size_precompute = obj_size;
#ifdef USE_32BITS_HASHCODE
precompute_hashcode_extend_size(p_obj, dest_addr, &obj_size_precompute);
#endif
if( ((POINTER_SIZE_INT)dest_addr + obj_size_precompute) > (POINTER_SIZE_INT)GC_BLOCK_END(dest_block)) {
#ifdef USE_32BITS_HASHCODE
block_swap_hashcode_buf(dest_block, &new_hashcode_buf, &old_hashcode_buf);
#endif
dest_block->new_free = dest_addr;
dest_block = mspace_get_next_target_block(collector, mspace);
if(dest_block == NULL) {
collector->result = FALSE;
return;
}
if((!local_last_dest) || (dest_block->block_idx > local_last_dest->block_idx))
local_last_dest = dest_block;
dest_addr = dest_block->base;
dest_block->src = p_obj;
last_src = curr_block;
if(p_obj != first_obj)
++curr_block->dest_counter;
}
assert(((POINTER_SIZE_INT)dest_addr + obj_size) <= (POINTER_SIZE_INT)GC_BLOCK_END(dest_block));
#ifdef USE_32BITS_HASHCODE
obj_info = slide_compact_process_hashcode(p_obj, dest_addr, &obj_size, collector,curr_block->hashcode_buf, new_hashcode_buf);
#endif
if( obj_info != 0 ) {
collector_remset_add_entry(collector, (Partial_Reveal_Object **)dest_addr);
collector_remset_add_entry(collector, (Partial_Reveal_Object **)(POINTER_SIZE_INT)obj_info);
}
obj_set_fw_in_oi(p_obj, dest_addr);
/* FIXME: should use alloc to handle alignment requirement */
dest_addr = (void *)((POINTER_SIZE_INT) dest_addr + obj_size);
p_obj = block_get_next_marked_obj_prefetch_next(curr_block, &start_pos);
}
#ifdef USE_32BITS_HASHCODE
hashcode_buf_clear(curr_block->hashcode_buf);
#endif
curr_block = mspace_get_next_compact_block(collector, mspace);
}
#ifdef USE_32BITS_HASHCODE
pool_put_entry(collector->gc->metadata->collector_hashcode_pool, collector->hashcode_set);
collector->hashcode_set = NULL;
#endif
pool_put_entry(collector->gc->metadata->collector_remset_pool, collector->rem_set);
collector->rem_set = NULL;
dest_block->new_free = dest_addr;
Block_Header *cur_last_dest = (Block_Header *)last_block_for_dest;
collector->cur_target_block = local_last_dest;
while((local_last_dest)&&((!cur_last_dest) || (local_last_dest->block_idx > cur_last_dest->block_idx))) {
atomic_casptr((volatile void **)&last_block_for_dest, local_last_dest, cur_last_dest);
cur_last_dest = (Block_Header *)last_block_for_dest;
}
#ifdef USE_32BITS_HASHCODE
old_hashcode_buf = block_set_hashcode_buf(dest_block, new_hashcode_buf);
hashcode_buf_destory(old_hashcode_buf);
#endif
return;
}
static inline void move_obj_between_chunks(Wspace *wspace, Chunk_Header **dest_ptr, Chunk_Header *src)
{
Chunk_Header *dest = *dest_ptr;
assert(dest->slot_size == src->slot_size);
unsigned int slot_size = dest->slot_size;
unsigned int alloc_num = src->alloc_num;
assert(alloc_num);
#ifdef USE_32BITS_HASHCODE
Hashcode_Buf* old_hashcode_buf = src->hashcode_buf;
Hashcode_Buf* new_hashcode_buf = dest->hashcode_buf;
#endif
while(alloc_num && dest){
Partial_Reveal_Object *p_obj = next_alloc_slot_in_chunk(src);
Partial_Reveal_Object *target = (Partial_Reveal_Object *)alloc_in_chunk(dest);
if(dest->slot_index == MAX_SLOT_INDEX){
dest->status = CHUNK_USED | CHUNK_NORMAL;
wspace_reg_used_chunk(wspace,dest);
dest = NULL;
}
assert(p_obj && target);
memcpy(target, p_obj, slot_size);
#ifdef USE_32BITS_HASHCODE
if(hashcode_is_set(p_obj)){
int hashcode;
if(new_hashcode_buf == NULL) {
new_hashcode_buf = hashcode_buf_create();
hashcode_buf_init(new_hashcode_buf);
dest->hashcode_buf = new_hashcode_buf;
}
if(hashcode_is_buffered(p_obj)){
/*already buffered objects;*/
hashcode = hashcode_buf_lookup(p_obj, old_hashcode_buf);
hashcode_buf_update(target, hashcode, new_hashcode_buf);
}else{
/*objects need buffering.*/
hashcode = hashcode_gen(p_obj);
hashcode_buf_update(target, hashcode, new_hashcode_buf);
Obj_Info_Type oi = get_obj_info_raw(target);
set_obj_info(target, oi | HASHCODE_BUFFERED_BIT);
}
}
#endif
#ifdef SSPACE_VERIFY
wspace_modify_mark_in_compact(target, p_obj, slot_size);
#endif
obj_set_fw_in_oi(p_obj, target);
--alloc_num;
}
#ifdef USE_32BITS_HASHCODE
if(alloc_num == 0) {
if(old_hashcode_buf) hashcode_buf_destory(old_hashcode_buf);
src->hashcode_buf = NULL;
}
#endif
/* dest might be set to NULL, so we use *dest_ptr here */
assert((*dest_ptr)->alloc_num <= (*dest_ptr)->slot_num);
src->alloc_num = alloc_num;
if(!dest){
assert((*dest_ptr)->alloc_num == (*dest_ptr)->slot_num);
*dest_ptr = NULL;
clear_free_slot_in_table(src->table, src->slot_index);
}
}