%p\n", single); } pthread_mutex_unlock(&my_mutex); } return single; } int main(...
oracle升级到19C有直接和间接升级,11.2.0.4以下的版本需要先升级到11.2.0.4然后再升级到19c;11.2.0.4以上版本可以直接升级。而我的版本是11.2.0.4,所以升级成非CDB的数据库。 19c升级步骤 升级环境 服务器os linux7.5 内存256G cpu 32核 oracle 版本 11.2.0.4 数据量240G oracle 19c软件静默安装时间约5-10分钟...
@interfaceDCSingle :NSObject +(id) instance ; @end #import"DCSingle.h" staticidinstance =nil; @implementationDCSingle +(id) instance { if(!instance) { //创建一个Singleton实例,并将该实例赋给instance全局变量 instance= [[superalloc]init]; } returninstance; } @end #import<Foundation/Foundatio...
SingleInstance.SingleApplication.Run(newFrmMain()); } FrmMainis the main form class name. TheRunmethod returnsfalseif any other instance of the application is already running. For a console based application, callRun( )without any parameter and check the return value, if it is true you can ex...
方法2:内部静态变量的懒汉实现 此方法也很容易实现,在instance函数里定义一个静态的实例,也可以保证拥有唯一实例,在返回时只需要返回其指针就可以了。推荐这种实现方法,真得非常简单。 代码语言:javascript 复制 classsingleton{protected:singleton(){pthread_mutex_init(&mutex);}public:staticpthread_mutex_t mutex;st...
call forwardingcall f call him call him a farmer call instance data fi call into play call level call loan market call logs call mainart call me mama call me not olive til call modification req call no man happy unt call of juarez the ca call of non-function call of the assassin cal...
controlled shift regi controlled single-way controlled space syst controlled speed controlled splash lub controlled superheat controlled swirl scav controlled system wit controlled tank venti controlled target boa controlled temperatur controlled time of ar controlled underwater controlled voltage so controller ...
Creates an instance of the CTaskDialog Class.Copy CTaskDialog( const CString& strContent, const CString& strMainInstruction, const CString& strTitle, int nCommonButtons = TDCBF_OK_BUTTON | TDCBF_CANCEL_BUTTON, int nTaskDialogOptions = TDF_ENABLE_HYPERLINKS | TDF_USE_COMMAND_LINKS, const ...
A single instance of this instance family can deliver up to 200,000 IOPS. Provides high storage I/O performance based on large computing capacity. For more information, see Storage I/O performance. Network: Supports IPv4 and IPv6. For information about IPv6 communication, see IPv6 ...
(@"obj1 = %@.",obj1);SingleClass*obj2=[SingleClass shareInstance];NSLog(@"obj2 = %@.",obj2);SingleClass*obj3=[[SingleClass alloc]init];NSLog(@"obj3 = %@.",obj3);SingleClass*obj4=[[SingleClass alloc]init];NSLog(@"obj4 = %@.",[obj4 copy]);NSLog(@"结束》》》");}@...