//该方法是内部私有方法-(void)_observe:(id)objectinfo:(_FBKVOInfo*)info{//先加锁,访问_objectInfosMappthread_mutex_lock(&_lock);//到_objectInfosMap中根据key(被监听的对象)获取被监听的属性信息集合NSMutableSet*infos=[_objectInfosMap objectForKey:object];//判断infos集合中是否存在被监听属性信息对...
模块使用了gcc的__attribute__((constructor))扩展,模块被加载时,该函数自动执行,然后调用direct_modules_register注册自己。 cardstate:我开始被blit函数弄糊涂了,并不像WIN32下那样要求指明源和目标。后来才知道它是调用另外的函数去设置源和目标,而不是通过参数来指定。 在研究DFB时,我的主要精力放在DFB的架构、...
-(void)_observe:(id)objectinfo:(_FBKVOInfo*)info{// lockpthread_mutex_lock(&_lock);// _objectInfosMap : 初始化时创建的 NSMapTable// 其结构是以 被观察者 object 为 key。并不像我们常用的 NSDictionary 那样是以 NSString 为 keyNSMutableSet*infos=[_objectInfosMap objectForKey:object];// ch...
(and Apple’s) future. Both need to open up, otherwise they might go the way of AOL. Add to that a certain scepticism of American behemoths in much of the developing world as well as in Europe. When Americans were dominating the web accepting a certain lock-in by a homegrown outfit,...
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}// register infopthread_mutex_lock(&_mutex); [_infos addObject:info]; pthread_mutex_unlock(&_mutex);// add observer[object addObserver:selfforKeyPath:info->_keyPath options:info->_options context:(void*)info];if(info->_state == _FBKVOInfoStateInitial) { ...
14、cardstate:我开始被blit函数弄糊涂了,并不像WIN32下那样要求指明源和目标。后来才知道它是调用另外的函数去设置源和目标,而不是通过参数来指定。 二、编译与安装 1、资源下载 需下载如下资源 DirectFB:DirectFB-1.6.1.tar.gz, Fusion: linux-fusion-8.10.2.tar.gz ...
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因此,在这里只能使用相对比较灵活的 NSMapTable。具体可以移步关于 NSMapTable3、pthread_mutex:这是一种超级易用的互斥锁,使用的时候,只需要初始化一个 pthread_mutex_t,用 pthread_mutex_lock 来锁定, pthread_mutex_unlock 来解锁,当使用完成后,记得调用 pthread_mutex_destroy 来销毁锁...