Golang Multi-core setup

Single core execution if the for front or middle does not delay, the main thread does not yield the CPU, causing the asynchronous thread to fail to execute.

The flag value cannot be set so that a dead loop occurs

Instance code:

Package Mainimport ("FMT" "Runtime" _ "Time") var (flag = falsestr string) func foo () {flag = TRUESTR = "Setup complete!"} Func Main () {runtime. Gomaxprocs (1) Go foo ()//time. Sleep (1 * time. Second) for {if flag {break}}fmt. Println (str)}

Workaround: 1, for middle or front plus delay 2, runtime. Gomaxprocs (1) changed to runtime. Gomaxprocs (2)

Golang Multi-core setup