英文:
What is the architecture behind Golang's Go Routine?
问题
Golang的Go协程背后的架构是什么？
我相信Go不仅仅为每个协程派生一个新线程。
英文:
What is the architecture behind Golang's Go Routine?
I believe that Go doesn't just fork a new thread for each routine.
答案1
得分: 5
过去确实有过一些Go语言的实现，每个goroutine实际上都会创建一个新的线程。
在主要的Go语言实现中，一个goroutine基本上只是一个堆栈（通常很小），还有一些额外的上下文（在1.5版本中，请参见runtime/runtime2.go中的type g）。从一个goroutine切换到另一个goroutine意味着改变堆栈指针和指向当前运行的goroutine的线程本地变量。
英文:
There have been Go implementations in the past that did in fact create a new thread for each goroutine.
In the main Go implementation, a Go routine is basically just a stack (usually small) with some additional context (in 1.5, see type g in runtime/runtime2.go). Changing from goroutine to another means changing the stack pointer and the thread-local variable that points to the currently running goroutine.
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