多線程之dispatch_queue_t

gcd非同步多線程操作使用流程，一般在子線程中處理資料，主線程更新介面

static dispatch_queue_t loadDealersQueue = NULL;    if (!loadDealersQueue) {        loadDealersQueue = dispatch_queue_create("com.geelycar.loadactivity.loaddealersqueue", NULL);    }        dispatch_async(loadDealersQueue, ^{        @autoreleasepool {            //Data processing            dispatch_async(dispatch_get_main_queue(), ^{            //Update Interface            });        }        });

今天又張見識了，看下如下的子線程與主線程的調用

 static dispatch_queue_t searchQueue = NULL;    if( !searchQueue )        searchQueue = dispatch_queue_create("com.moneytree.searchqueue", NULL);//調度隊列    
//非同步運行    dispatch_async(searchQueue, ^{        @autoreleasepool {//ARC模式下自動釋放池的寫法
//資料處理放在隊列中            NSArray *resultData = [[NSArray alloc] initWithArray:[[MTStockManage sharedInstance] stockListMatchingSearchText:searchText fromArray:self.stockList]];                        self.stockList = resultData;            [self setTableDataSource:nil];                                    if (resultData.count > SHOW_STOCK_NUMBER) {                NSRange range = NSMakeRange(0, SHOW_STOCK_NUMBER);                [self setTableDataSource:[resultData subarrayWithRange:range]];            }else {                [self setTableDataSource:resultData];            }                        dispatch_async(dispatch_get_main_queue(), ^{//返回主介面                [self.dataResultTable reloadData]; //主線程中重新整理UI            });                    }    });