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License: MIT License
look-free circular queue in Golang
License: MIT License
不知道为啥要在汇编代码前面加 // build !race
去了之后写了个俩消费者俩生产者的 demo,然后 go run -race demo.go
跑了一下就 race 了。
看到你给 go 提的 xor 的 issue 追过来的,想顺便问一下你提到的 intel 汇编的那个指令编程优化手册是在哪找到的,能否发个链接?
demo.go:
package main
import (
"sync"
"github.com/templexxx/fqueue"
)
func main() {
q, err := fqueue.New(16)
if err != nil {
panic(err)
}
var w sync.WaitGroup
w.Add(4)
go func() {
defer w.Done()
for i := 0; i < 10000; i++ {
q.Push(i)
}
}()
go func() {
defer w.Done()
for i := 10000; i < 20000; i++ {
q.Push(i)
}
}()
go func() {
defer w.Done()
for i := 0; i < 10000; i++ {
q.Get()
}
}()
go func() {
defer w.Done()
for i := 10000; i < 20000; i++ {
q.Get()
}
}()
w.Wait()
}
==================
WARNING: DATA RACE
Read at 0x00c42007c028 by goroutine 7:
github.com/templexxx/fqueue.(*queue).Get()
/home/cholerae/gopath/src/github.com/templexxx/fqueue/fqueue.go:111 +0x15e
main.main.func3()
/home/cholerae/test/gotest/testfqueue.go:30 +0x6b
Previous write at 0x00c42007c028 by goroutine 5:
github.com/templexxx/fqueue.(*queue).Push()
/home/cholerae/gopath/src/github.com/templexxx/fqueue/fqueue.go:77 +0x1b8
main.main.func1()
/home/cholerae/test/gotest/testfqueue.go:18 +0x9e
Goroutine 7 (running) created at:
main.main()
/home/cholerae/test/gotest/testfqueue.go:27 +0x1c0
Goroutine 5 (running) created at:
main.main()
/home/cholerae/test/gotest/testfqueue.go:15 +0x168
==================
==================
WARNING: DATA RACE
Read at 0x00c42007c040 by goroutine 8:
github.com/templexxx/fqueue.(*queue).Get()
/home/cholerae/gopath/src/github.com/templexxx/fqueue/fqueue.go:111 +0x15e
main.main.func4()
/home/cholerae/test/gotest/testfqueue.go:36 +0x6e
Previous write at 0x00c42007c040 by goroutine 5:
github.com/templexxx/fqueue.(*queue).Push()
/home/cholerae/gopath/src/github.com/templexxx/fqueue/fqueue.go:77 +0x1b8
main.main.func1()
/home/cholerae/test/gotest/testfqueue.go:18 +0x9e
Goroutine 8 (running) created at:
main.main()
/home/cholerae/test/gotest/testfqueue.go:33 +0x1ec
Goroutine 5 (running) created at:
main.main()
/home/cholerae/test/gotest/testfqueue.go:15 +0x168
==================
==================
WARNING: DATA RACE
Read at 0x00c42007c030 by goroutine 8:
github.com/templexxx/fqueue.(*queue).Get()
/home/cholerae/gopath/src/github.com/templexxx/fqueue/fqueue.go:112 +0x196
main.main.func4()
/home/cholerae/test/gotest/testfqueue.go:36 +0x6e
Previous write at 0x00c42007c030 by goroutine 5:
github.com/templexxx/fqueue.(*queue).Push()
/home/cholerae/gopath/src/github.com/templexxx/fqueue/fqueue.go:76 +0x17e
main.main.func1()
/home/cholerae/test/gotest/testfqueue.go:18 +0x9e
Goroutine 8 (running) created at:
main.main()
/home/cholerae/test/gotest/testfqueue.go:33 +0x1ec
Goroutine 5 (running) created at:
main.main()
/home/cholerae/test/gotest/testfqueue.go:15 +0x168
==================
==================
WARNING: DATA RACE
Read at 0x00c42007c018 by goroutine 7:
github.com/templexxx/fqueue.(*queue).Get()
/home/cholerae/gopath/src/github.com/templexxx/fqueue/fqueue.go:112 +0x196
main.main.func3()
/home/cholerae/test/gotest/testfqueue.go:30 +0x6b
Previous write at 0x00c42007c018 by goroutine 5:
github.com/templexxx/fqueue.(*queue).Push()
/home/cholerae/gopath/src/github.com/templexxx/fqueue/fqueue.go:76 +0x17e
main.main.func1()
/home/cholerae/test/gotest/testfqueue.go:18 +0x9e
Goroutine 7 (running) created at:
main.main()
/home/cholerae/test/gotest/testfqueue.go:27 +0x1c0
Goroutine 5 (running) created at:
main.main()
/home/cholerae/test/gotest/testfqueue.go:15 +0x168
==================
==================
WARNING: DATA RACE
Read at 0x00c42007d1d0 by goroutine 7:
github.com/templexxx/fqueue.(*queue).Get()
/home/cholerae/gopath/src/github.com/templexxx/fqueue/fqueue.go:112 +0x196
main.main.func3()
/home/cholerae/test/gotest/testfqueue.go:30 +0x6b
Previous write at 0x00c42007d1d0 by goroutine 5:
[failed to restore the stack]
Goroutine 7 (running) created at:
main.main()
/home/cholerae/test/gotest/testfqueue.go:27 +0x1c0
Goroutine 5 (running) created at:
main.main()
/home/cholerae/test/gotest/testfqueue.go:15 +0x168
==================
==================
WARNING: DATA RACE
Read at 0x00c42007d1f8 by goroutine 8:
github.com/templexxx/fqueue.(*queue).Get()
/home/cholerae/gopath/src/github.com/templexxx/fqueue/fqueue.go:111 +0x15e
main.main.func4()
/home/cholerae/test/gotest/testfqueue.go:36 +0x6e
Previous write at 0x00c42007d1f8 by goroutine 5:
[failed to restore the stack]
Goroutine 8 (running) created at:
main.main()
/home/cholerae/test/gotest/testfqueue.go:33 +0x1ec
Goroutine 5 (running) created at:
main.main()
/home/cholerae/test/gotest/testfqueue.go:15 +0x168
==================
==================
WARNING: DATA RACE
Read at 0x00c42007d210 by goroutine 7:
github.com/templexxx/fqueue.(*queue).Get()
/home/cholerae/gopath/src/github.com/templexxx/fqueue/fqueue.go:111 +0x15e
main.main.func3()
/home/cholerae/test/gotest/testfqueue.go:30 +0x6b
Previous write at 0x00c42007d210 by goroutine 5:
[failed to restore the stack]
Goroutine 7 (running) created at:
main.main()
/home/cholerae/test/gotest/testfqueue.go:27 +0x1c0
Goroutine 5 (running) created at:
main.main()
/home/cholerae/test/gotest/testfqueue.go:15 +0x168
==================
==================
WARNING: DATA RACE
Read at 0x00c42007d1e8 by goroutine 8:
github.com/templexxx/fqueue.(*queue).Get()
/home/cholerae/gopath/src/github.com/templexxx/fqueue/fqueue.go:112 +0x196
main.main.func4()
/home/cholerae/test/gotest/testfqueue.go:36 +0x6e
Previous write at 0x00c42007d1e8 by goroutine 5:
[failed to restore the stack]
Goroutine 8 (running) created at:
main.main()
/home/cholerae/test/gotest/testfqueue.go:33 +0x1ec
Goroutine 5 (running) created at:
main.main()
/home/cholerae/test/gotest/testfqueue.go:15 +0x168
==================
==================
WARNING: DATA RACE
Read at 0x00c4200b9738 by goroutine 7:
github.com/templexxx/fqueue.(*queue).Get()
/home/cholerae/gopath/src/github.com/templexxx/fqueue/fqueue.go:111 +0x15e
main.main.func3()
/home/cholerae/test/gotest/testfqueue.go:30 +0x6b
Previous write at 0x00c4200b9738 by goroutine 6:
github.com/templexxx/fqueue.(*queue).Push()
/home/cholerae/gopath/src/github.com/templexxx/fqueue/fqueue.go:77 +0x1b8
main.main.func2()
/home/cholerae/test/gotest/testfqueue.go:24 +0xa1
Goroutine 7 (running) created at:
main.main()
/home/cholerae/test/gotest/testfqueue.go:27 +0x1c0
Goroutine 6 (finished) created at:
main.main()
/home/cholerae/test/gotest/testfqueue.go:21 +0x194
==================
==================
WARNING: DATA RACE
Read at 0x00c4200b9750 by goroutine 8:
github.com/templexxx/fqueue.(*queue).Get()
/home/cholerae/gopath/src/github.com/templexxx/fqueue/fqueue.go:111 +0x15e
main.main.func4()
/home/cholerae/test/gotest/testfqueue.go:36 +0x6e
Previous write at 0x00c4200b9750 by goroutine 6:
github.com/templexxx/fqueue.(*queue).Push()
/home/cholerae/gopath/src/github.com/templexxx/fqueue/fqueue.go:77 +0x1b8
main.main.func2()
/home/cholerae/test/gotest/testfqueue.go:24 +0xa1
Goroutine 8 (running) created at:
main.main()
/home/cholerae/test/gotest/testfqueue.go:33 +0x1ec
Goroutine 6 (finished) created at:
main.main()
/home/cholerae/test/gotest/testfqueue.go:21 +0x194
==================
==================
WARNING: DATA RACE
Read at 0x00c4200b9728 by goroutine 7:
github.com/templexxx/fqueue.(*queue).Get()
/home/cholerae/gopath/src/github.com/templexxx/fqueue/fqueue.go:112 +0x196
main.main.func3()
/home/cholerae/test/gotest/testfqueue.go:30 +0x6b
Previous write at 0x00c4200b9728 by goroutine 6:
github.com/templexxx/fqueue.(*queue).Push()
/home/cholerae/gopath/src/github.com/templexxx/fqueue/fqueue.go:76 +0x17e
main.main.func2()
/home/cholerae/test/gotest/testfqueue.go:24 +0xa1
Goroutine 7 (running) created at:
main.main()
/home/cholerae/test/gotest/testfqueue.go:27 +0x1c0
Goroutine 6 (finished) created at:
main.main()
/home/cholerae/test/gotest/testfqueue.go:21 +0x194
==================
==================
WARNING: DATA RACE
Read at 0x00c4200b9740 by goroutine 8:
github.com/templexxx/fqueue.(*queue).Get()
/home/cholerae/gopath/src/github.com/templexxx/fqueue/fqueue.go:112 +0x196
main.main.func4()
/home/cholerae/test/gotest/testfqueue.go:36 +0x6e
Previous write at 0x00c4200b9740 by goroutine 6:
github.com/templexxx/fqueue.(*queue).Push()
/home/cholerae/gopath/src/github.com/templexxx/fqueue/fqueue.go:76 +0x17e
main.main.func2()
/home/cholerae/test/gotest/testfqueue.go:24 +0xa1
Goroutine 8 (running) created at:
main.main()
/home/cholerae/test/gotest/testfqueue.go:33 +0x1ec
Goroutine 6 (finished) created at:
main.main()
/home/cholerae/test/gotest/testfqueue.go:21 +0x194
==================
Found 12 data race(s)
exit status 66
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