What/Where 是物理设备上的线程工作副本
What/Where is Thread Working Copy on physical device
来自java specification:
Every thread has a working memory in which it keeps its own working copy of variables that it must use or assign. As the thread executes a program, it operates on these working copies. The main memory contains the master copy of every variable. There are rules about when a thread is permitted or required to transfer the contents of its working copy of a variable into the master copy or vice versa.
What/Where 是“线程工作副本”？他们指的是 CPU 缓存还是 RAM？
我困惑的原因：
For the purposes of this chapter, the verbs use, assign, load, store, lock, and unlock name actions that a thread can perform. The verbs read, write, lock, and unlock name actions that the main memory subsystem can perform.
他们是否使用汇编代码引用这些指令？
注意：我知道规范是旧的，我将这个问题标记为 Java14。我这样做是因为构造仍然成立。
编辑：
我创建了下面的图片，是否正确？
我是这么理解的。下图如有错误请评论：
“工作副本”是一种逻辑结构，而不是物理结构。
每个线程的完整数据将在 RAM 中找到，部分数据可能会或可能不会作为副本存在于 CPU 缓存中，具体取决于 CPU 上次需要它们的时间。
来自java specification:
Every thread has a working memory in which it keeps its own working copy of variables that it must use or assign. As the thread executes a program, it operates on these working copies. The main memory contains the master copy of every variable. There are rules about when a thread is permitted or required to transfer the contents of its working copy of a variable into the master copy or vice versa.
What/Where 是“线程工作副本”？他们指的是 CPU 缓存还是 RAM？
我困惑的原因：
For the purposes of this chapter, the verbs use, assign, load, store, lock, and unlock name actions that a thread can perform. The verbs read, write, lock, and unlock name actions that the main memory subsystem can perform.
他们是否使用汇编代码引用这些指令？
注意：我知道规范是旧的，我将这个问题标记为 Java14。我这样做是因为构造仍然成立。
编辑：
我创建了下面的图片，是否正确？
我是这么理解的。下图如有错误请评论：
“工作副本”是一种逻辑结构，而不是物理结构。
每个线程的完整数据将在 RAM 中找到，部分数据可能会或可能不会作为副本存在于 CPU 缓存中，具体取决于 CPU 上次需要它们的时间。