一.指令重排序 例子如下: public class Visibility1 { public static boolean ready; public static int number; } public class ReaderThread extends Thread { @Override public void run() { while (!Visibility1.ready){ Thread.yield(); System.out.println(Visibility1.numb
[译]Vulkan教程(17)帧缓存 Framebuffers 帧缓存 We've talked a lot about framebuffers in the past few chapters and we've set up the render pass to expect a single framebuffer with the same format as the swap chain images, but we haven't actually created any yet.
一.重排序场景 class ResortDemo { int a = 0; boolean flag = false; public void writer() { a = 1; //1 flag = true; //2 } Public void reader() { if (flag) { //3 int i = a * a; //4 …… } } } 当两个线程 A 和 B,A 首先执行writer() 方法,随后 B 线程接着执行 reader() 方法.线程B在执行操作4时,能否看到线
vlc是一套优秀的开源媒体库,其特点是提供了完整的流媒体框架, 用它可以非常方便的实现抓取解码帧的功能. 与此功能有关的关键API为 libvlc_video_set_callbacks /*设置回调,用来抓取解码后的帧*/ libvlc_video_set_format /*设置解码帧的格式 yuv or rgba ?*/ 这个函数将三个函数指针作为参数 /*callback function, lock the shared memory, and tell vlc where to put