centos下go安装delve

孟帅
2021-05-26 10:40:41
Go
Centos Xshell Go

什么是delve

delve是golang推荐的专门go语言调试工具，用来替代gdb，因为：golang组织说delve能更好的理解go语言。

delve的安装，delve的github地址：https://github.com/derekparker/delve

#拉取源码

go get -u github.com/derekparker/delve/cmd/dlv

#切换到安装位置，安装路径一般在$GOMODCACHE们可以通过go env查看

cd /www/wwwroot/Golang/pkg/mod/github.com/derekparker/delve@v1.4.0/cmd/dlv

#安装dlv命令行

go build

go install

3.delve常用命令行

attach到进程PID

$ dlv attach <pid>
Type 'help' for list of commands.
(dlv) help

打印所有的goroutines列表

(dlv) goroutines
[10 goroutines]
  Goroutine 1 - User: /usr/local/go/src/syscall/asm_linux_amd64.s:27 syscall.Syscall (0x466e70) (thread 14023)
  Goroutine 2 - User: /usr/local/go/src/runtime/proc.go:292 runtime.gopark (0x42800a)
  Goroutine 3 - User: /usr/local/go/src/runtime/proc.go:292 runtime.gopark (0x42800a)
  Goroutine 17 - User: /usr/local/go/src/runtime/proc.go:292 runtime.gopark (0x42800a)
  Goroutine 18 - User: /usr/local/go/src/runtime/sigqueue.go:139 os/signal.signal_recv (0x43b5b6)
  Goroutine 19 - User: /usr/local/go/src/runtime/proc.go:292 runtime.gopark (0x42800a)
  Goroutine 20 - User: ./main.go:43 main.setupSignalHandler.func1 (0x49318c)
  Goroutine 21 - User: /usr/local/go/src/runtime/time.go:102 time.Sleep (0x442ac6)
  Goroutine 22 - User: /usr/local/go/src/runtime/time.go:102 time.Sleep (0x442ac6)
  Goroutine 23 - User: /usr/local/go/src/runtime/lock_futex.go:227 runtime.notetsleepg (0x40c9a2)

打印单个goroutine的stack

(dlv) goroutine <goroutine_id> stack
 0  0x0000000000466e70 in syscall.Syscall
    at /usr/local/go/src/syscall/asm_linux_amd64.s:27
 1  0x000000000046692f in syscall.read
    at /usr/local/go/src/syscall/zsyscall_linux_amd64.go:749
 2  0x0000000000466449 in syscall.Read
    at /usr/local/go/src/syscall/syscall_unix.go:162
 3  0x0000000000468798 in internal/poll.(*FD).Read
    at /usr/local/go/src/internal/poll/fd_unix.go:153
 4  0x0000000000469b8e in os.(*File).read
    at /usr/local/go/src/os/file_unix.go:226
 5  0x0000000000468f7a in os.(*File).Read
    at /usr/local/go/src/os/file.go:107
 6  0x00000000004658a6 in io.ReadAtLeast
    at /usr/local/go/src/io/io.go:309
 7  0x0000000000465a18 in io.ReadFull
    at /usr/local/go/src/io/io.go:327
...

打印所有goroutine的stack

(dlv) goroutines -t
[10 goroutines]
  Goroutine 1 - User: /usr/local/go/src/syscall/asm_linux_amd64.s:27 syscall.Syscall (0x466e70) (thread 14023)
         0  0x0000000000466e70 in syscall.Syscall
             at /usr/local/go/src/syscall/asm_linux_amd64.s:27
         1  0x000000000046692f in syscall.read
             at /usr/local/go/src/syscall/zsyscall_linux_amd64.go:749
         2  0x0000000000466449 in syscall.Read
             at /usr/local/go/src/syscall/syscall_unix.go:162
          ...
        (truncated)
  Goroutine 2 - User: /usr/local/go/src/runtime/proc.go:292 runtime.gopark (0x42800a)
        0  0x000000000042800a in runtime.gopark
            at /usr/local/go/src/runtime/proc.go:292
        1  0x00000000004280be in runtime.goparkunlock
            at /usr/local/go/src/runtime/proc.go:297
        2  0x0000000000427e4c in runtime.forcegchelper
            at /usr/local/go/src/runtime/proc.go:248
        3  0x0000000000451671 in runtime.goexit
            at /usr/local/go/src/runtime/asm_amd64.s:2361
...