osfmk/vm/default_freezer.c

202 			default_freezer_handle_t df_handle)
218 		fo->fo_df_handle = df_handle;
242 	default_freezer_handle_t df_handle)
246 	if (df_handle) {
247 		default_freezer_handle_lock(df_handle);
250 	kr = vm_object_pack(purgeable_count, wired_count, clean_count, dirty_count, dirty_budget, shared, src_object, df_handle);
252 	if (df_handle) {
253 		default_freezer_handle_unlock(df_handle);
268 		default_freezer_handle_t df_handle)
275 	assert(df_handle);
277 	compact_object = df_handle->dfh_compact_object;
281 	freeze_table =  df_handle->dfh_table;
285 		default_freezer_memory_object_create(p->object, df_handle);
288 		assert(df_handle == ((default_freezer_memory_object_t)memory_object)->fo_df_handle);
292 	default_freezer_mapping_store(freeze_table, df_handle->dfh_compact_offset, memory_object, p->offset + p->object->paging_offset);
293 	vm_page_rename(p, compact_object, df_handle->dfh_compact_offset, FALSE);
296 	df_handle->dfh_compact_offset += PAGE_SIZE;
302 		 default_freezer_handle_t df_handle)
317 	assert(df_handle);
319 	default_freezer_handle_lock(df_handle);
322 	freeze_table = df_handle->dfh_table;
323 	compact_object = df_handle->dfh_compact_object;
333 			default_freezer_handle_unlock(df_handle);
399 		df_handle->dfh_table = NULL;
400 		df_handle->dfh_compact_object = VM_OBJECT_NULL;
401 		df_handle->dfh_compact_offset = 0;
402 		default_freezer_handle_unlock(df_handle);
526 	default_freezer_handle_t	df_handle = NULL;
528 	df_handle = fo->fo_df_handle;
530 	if (df_handle == NULL) {
533 		default_freezer_handle_lock(df_handle);
552 		default_freezer_handle_unlock(df_handle);
766 default_freezer_handle_lock(default_freezer_handle_t df_handle) {
767 	lck_rw_lock_exclusive(&df_handle->dfh_lck);
771 default_freezer_handle_unlock(default_freezer_handle_t df_handle) {
772 	lck_rw_done(&df_handle->dfh_lck);
779 	default_freezer_handle_t		df_handle = NULL;
780 	df_handle = kalloc(sizeof(struct default_freezer_handle));
782 	if (df_handle) {
783 		memset(df_handle, 0, sizeof(struct default_freezer_handle));
784 		lck_rw_init(&df_handle->dfh_lck, &default_freezer_handle_lck_grp, NULL);
786 		default_freezer_handle_reference_locked(df_handle);
790 	return df_handle;
795 	default_freezer_handle_t df_handle)
800 	if (df_handle == NULL || df_handle->dfh_table != NULL) {
808 			df_handle->dfh_compact_object = compact_object;
809 			df_handle->dfh_compact_offset = 0;
810 			df_handle->dfh_table = default_freezer_mapping_create(df_handle->dfh_compact_object, df_handle->dfh_compact_offset);
811 			if (!df_handle->dfh_table) {
822 	default_freezer_handle_t df_handle)
824 	assert(df_handle);
825 	df_handle->dfh_ref_count++;
830 	default_freezer_handle_t df_handle)
832 	assert(df_handle);
833 	default_freezer_handle_lock(df_handle);
834 	if (default_freezer_handle_deallocate_locked(df_handle)) {
835 		default_freezer_handle_unlock(df_handle);
841 	default_freezer_handle_t df_handle)
845 	assert(df_handle);
846 	df_handle->dfh_ref_count--;
847 	if (df_handle->dfh_ref_count == 0) {
849 		if (df_handle->dfh_compact_object) {
850 			vm_object_deallocate(df_handle->dfh_compact_object);
851 			df_handle->dfh_compact_object = NULL;
852 			df_handle->dfh_compact_offset = 0;
855 		if (df_handle->dfh_table) {
856 			default_freezer_mapping_free(&df_handle->dfh_table, TRUE);
857 			df_handle->dfh_table = NULL;
860 		lck_rw_done(&df_handle->dfh_lck);
861 		lck_rw_destroy(&df_handle->dfh_lck, &default_freezer_handle_lck_grp);
864 		kfree(df_handle, sizeof(struct default_freezer_handle));
871 	default_freezer_handle_t df_handle)
873 	assert(df_handle);
875 	vm_object_pageout(df_handle->dfh_compact_object);