-(void)concurrentQueue{dispatch_queue_t queue=dispatch_queue_create("concurrent queue",DISPATCH_QUEUE_CONCURRENT);for(NSInteger index=0;index<6;index++){dispatch_async(queue,^{NSLog(@"task index %ld in concurrent queue",index);});}} 输出结果: 代码语言:javascript 代码运行次数:0 运行 AI代码解...
Thread32name:GCDAsyncSocket-CFStream Thread32Crashed:0libobjc.A.dylib0x19b483c50objc_release+161Foundation0x184161344-[_NSThreadPerformInfo dealloc]+562Foundation0x1842d08dc__NSThreadPerform+1603CoreFoundation0x1829b069cCFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION+284CoreFoundation0x1829c12...
C语言程序(存储为一个文件) long gcd(p,q) long p,q; { if(p%q==0) return q; else return gcd(q, p% q) ;}main() { printf( "\n%ld\n",gcdx(4,12))}在x86/Linux系统上用某版本的gcc命令得到的编译结果如下: In function‘main’ : undefined reference to‘gcdx’ ld return...
整体遵循高优先级先执行规则,个别低优先级先输出的原因是发送global期间还没有轮训到高优先级任务,一旦遇到就会先执行高优先级任务)- (void)test4 {dispatch_queue_tglobalQueue = dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_LOW,0);for(inti=0; i<100; ++i) {dispatch_async(globalQueue, ^{NSLog(@...
.do_probe = (void *)dummy_function_r0, .do_debug = dispatch_queue_debug, }; 2.do_targetq 主队列的目标队列:"com.apple.root.default-overcommit-priority"这个全局队列。这里我们先提前总结一下:非全局队列的队列类型(主队列以及后面提到的管理队列和自定义队列),都需要压入到全局队列处理,所以需要设置...
(9)一个任务可以是一个函数(function)或者是一个Block,GCD的底层依然是用线程实现的,不过这样可以让程序员不用关注实现的细节. (10) dispatch queue 分为三种 So GCD is the leading role of today. 五.代码示例 1.获取主线程 /** 获取主线程
Grand Central Dispatch (GCD)是Apple开发的一个多核编程的解决方法。dispatch queue分成以下三种:1)运行在主线程的Main queue,通过dispatch_get_main_queue获取。/*! * @function dispatch_get_main_queue * * @abstract * Return abstract thread default ...
Why not? First, an inline keyword doesn't force the compiler to inline the function, but only advises to do so. Second, for a recursive function it's possible to inline several levels of recursion and then actually perform a recursive call (just like loop unrolling). In MSVC it's even...
Thanks for the sample code. We have been able to send/receive data using the above code. However, we have now run into some new problems. nw_connection_t client [in this case the iPhone] does not get an event handler if the TCP server becomes unavailable and therefore has no means of...
在C语言中,可以使用算法来计算欧拉函数(Euler's Totient Function)。欧拉函数,也被称为φ函数,用于计算小于或等于给定数字n的正整数中与n互质的数的个数。 命运之光 2024/03/20 2170 【题解】平衡队列 游戏 For the daily milking, Farmer John’s N cows (1 ≤ N ≤ 50,000) always line up in the...