GO语言调试利器dlv快速上手
https://www.cnblogs.com/realjimmy/p/13418508.html
tar -xvf go1.15.2.linux-arm64.tar.gz -C /usr/local/go
[root@centos7 ~]# ls /usr/local/go go [root@centos7 ~]# ls /usr/local/go/go/ api AUTHORS bin CONTRIBUTING.md CONTRIBUTORS doc favicon.ico lib LICENSE misc PATENTS pkg README.md robots.txt SECURITY.md src test VERSION [root@centos7 ~]#
[root@centos7 ~]# go version go version go1.15.2 linux/arm64 [root@centos7 ~]# cat go.source export GOPATH=/opt/gopath export GOROOT=/usr/local/go/go export GOARCH=arm64 export GOOS=linux export GOTOOLS=/pkg/tool #export PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/root/bin:/root/bin:/bin:/bin export PATH=$PATH:$GOROOT/bin [root@centos7 ~]#
增加
export PATH=$PATH:$GOPATH/bin
[root@centos7 ~]# cat go.source export GOPATH=/opt/gopath export GOROOT=/usr/local/go15.2/go export GOARCH=arm64 export GOOS=linux export GOTOOLS=/pkg/tool #export PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/root/bin:/root/bin:/bin:/bin export PATH=$PATH:$GOPATH/bin export PATH=$PATH:$GOROOT/bin [root@centos7 ~]# ls /opt/gopath/bin/dlv /opt/gopath/bin/dlv [root@centos7 ~]#
一、dlv的安装
1）下载dlv
git clone https://github.com/go-delve/delve.git $GOPATH/src/github.com/go-delve/delve
或者 go get github.com/derekparker/delve/cmd/dlv
root@cloud:~# go version go version go1.14.10 linux/arm64
2）安装
cd $GOPATH/src/github.com/go-delve/delve
make install
root@cloud:~/delve# make install -j $(nproc) go install "-ldflags=-X main.Build=1b2357092c8fee7406988d8191f71059700c5399" github.com/go-delve/delve/cmd/dlv root@cloud:~/delve# dlv -h Delve is a source level debugger for Go programs. Delve enables you to interact with your program by controlling the execution of the process, evaluating variables, and providing information of thread / goroutine state, CPU register state and more. The goal of this tool is to provide a simple yet powerful interface for debugging Go programs. Pass flags to the program you are debugging using `--`, for example: `dlv exec ./hello -- server --config conf/config.toml`
(dlv) bp
Breakpoint runtime-fatal-throw at 0x429a0 for runtime.fatalthrow() GOROOT/src/runtime/panic.go:1162 (0)
Breakpoint unrecovered-panic at 0x42a00 for runtime.fatalpanic() GOROOT/src/runtime/panic.go:1189 (0)
print runtime.curg._panic.arg
Breakpoint 1 at 0x3edc70 for gvisor.dev/gvisor/pkg/sentry/mm.(*MemoryManager).MMap() pkg/sentry/mm/syscalls.go:75 (1)
(dlv) clear 1
Breakpoint 1 cleared at 0x3edc70 for gvisor.dev/gvisor/pkg/sentry/mm.(*MemoryManager).MMap() pkg/sentry/mm/syscalls.go:75
(dlv) bp
Breakpoint runtime-fatal-throw at 0x429a0 for runtime.fatalthrow() GOROOT/src/runtime/panic.go:1162 (0)
Breakpoint unrecovered-panic at 0x42a00 for runtime.fatalpanic() GOROOT/src/runtime/panic.go:1189 (0)
print runtime.curg._panic.arg
(dlv) quit
Would you like to kill the process? [Y/n] n
root@cloud:~/delve# dlv和golang
root@cloud:~/delve# dlv -h Command 'dlv' not found, did you mean: command 'ddv' from deb ncbi-tools-x11 command 'delv' from deb dnsutils command 'dav' from deb dav-text command 'lv' from deb lv command 'dlg' from deb pccts command 'dll' from deb brickos Try: apt install <deb name> root@cloud:~/delve# source ~/hyper/go_source root@cloud:~/delve# dlv -h Delve is a source level debugger for Go programs. Delve enables you to interact with your program by controlling the execution of the process, evaluating variables, and providing information of thread / goroutine state, CPU register state and more. The goal of this tool is to provide a simple yet powerful interface for debugging Go programs. Pass flags to the program you are debugging using `--`, for example: `dlv exec ./hello -- server --config conf/config.toml`
查看协程
(dlv) goroutines Goroutine 1 - User: GOROOT/src/runtime/sema.go:56 sync.runtime_Semacquire (0x73ac8) [semacquire] Goroutine 2 - User: GOROOT/src/runtime/proc.go:307 runtime.gopark (0x450c0) [force gc (idle)] Goroutine 3 - User: GOROOT/src/runtime/proc.go:307 runtime.gopark (0x450c0) [GC sweep wait] Goroutine 4 - User: GOROOT/src/runtime/proc.go:307 runtime.gopark (0x450c0) [GC scavenge wait] Goroutine 5 - User: GOROOT/src/runtime/proc.go:307 runtime.gopark (0x450c0) [GC worker (idle)] Goroutine 6 - User: GOROOT/src/runtime/proc.go:307 runtime.gopark (0x450c0) [GC worker (idle)] Goroutine 7 - User: GOROOT/src/runtime/proc.go:307 runtime.gopark (0x450c0) [GC worker (idle)] Goroutine 8 - User: GOROOT/src/runtime/proc.go:307 runtime.gopark (0x450c0) [GC worker (idle)] Goroutine 9 - User: GOROOT/src/runtime/proc.go:307 runtime.gopark (0x450c0) [GC worker (idle)] Goroutine 10 - User: GOROOT/src/runtime/proc.go:307 runtime.gopark (0x450c0) [GC worker (idle)] Goroutine 11 - User: GOROOT/src/runtime/proc.go:307 runtime.gopark (0x450c0) [GC worker (idle)] Goroutine 12 - User: GOROOT/src/runtime/proc.go:307 runtime.gopark (0x450c0) [GC worker (idle)] Goroutine 13 - User: GOROOT/src/runtime/proc.go:307 runtime.gopark (0x450c0) [GC worker (idle)] Goroutine 14 - User: GOROOT/src/runtime/proc.go:307 runtime.gopark (0x450c0) [GC worker (idle)]
could not open debug info
[root@centos7 ~]# cat go.source export GOPATH=/opt/gopath export GOROOT=/usr/local/go15.2/go export GOARCH=arm64 export GOOS=linux export GOTOOLS=/pkg/tool #export PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/root/bin:/root/bin:/bin:/bin export PATH=$PATH:$GOPATH/bin export PATH=$PATH:$GOROOT/bin [root@centos7 ~]# ls /opt/gopath/bin/dlv /opt/gopath/bin/dlv [root@centos7 ~]# ps -elf | grep nginx | grep ingress 4 S 101 64638 64619 0 80 0 - 7 SyS_rt 03:05 ? 00:00:00 /usr/bin/dumb-init -- /nginx-ingress-controller --publish-service=ingress-nginx/ingress-nginx-controller --election-id=ingress-controller-leader --ingress-class=nginx --configmap=ingress-nginx/ingress-nginx-controller --validating-webhook=:8443 --validating-webhook-certificate=/usr/local/certificates/cert --validating-webhook-key=/usr/local/certificates/key 4 S 101 64679 64638 0 80 0 - 11673 SyS_ep 03:05 ? 00:00:13 /nginx-ingress-controller --publish-service=ingress-nginx/ingress-nginx-controller --election-id=ingress-controller-leader --ingress-class=nginx --configmap=ingress-nginx/ingress-nginx-controller --validating-webhook=:8443 --validating-webhook-certificate=/usr/local/certificates/cert --validating-webhook-key=/usr/local/certificates/key [root@centos7 ~]# dlv attach 64679 could not attach to pid 64679: could not open debug info [root@centos7 ~]#
一、dlv的安装
1）下载dlv
git clone https://github.com/go-delve/delve.git $GOPATH/src/github.com/go-delve/delve
或者 go get github.com/derekparker/delve/cmd/dlv
root@cloud:~# go version go version go1.14.10 linux/arm64
2）安装
cd $GOPATH/src/github.com/go-delve/delve
make install
root@cloud:~/delve# make install -j $(nproc) go install "-ldflags=-X main.Build=1b2357092c8fee7406988d8191f71059700c5399" github.com/go-delve/delve/cmd/dlv root@cloud:~/delve# dlv -h Delve is a source level debugger for Go programs. Delve enables you to interact with your program by controlling the execution of the process, evaluating variables, and providing information of thread / goroutine state, CPU register state and more. The goal of this tool is to provide a simple yet powerful interface for debugging Go programs. Pass flags to the program you are debugging using `--`, for example: `dlv exec ./hello -- server --config conf/config.toml`
(dlv) bp
Breakpoint runtime-fatal-throw at 0x429a0 for runtime.fatalthrow() GOROOT/src/runtime/panic.go:1162 (0)
Breakpoint unrecovered-panic at 0x42a00 for runtime.fatalpanic() GOROOT/src/runtime/panic.go:1189 (0)
print runtime.curg._panic.arg
Breakpoint 1 at 0x3edc70 for gvisor.dev/gvisor/pkg/sentry/mm.(*MemoryManager).MMap() pkg/sentry/mm/syscalls.go:75 (1)
(dlv) clear 1
Breakpoint 1 cleared at 0x3edc70 for gvisor.dev/gvisor/pkg/sentry/mm.(*MemoryManager).MMap() pkg/sentry/mm/syscalls.go:75
(dlv) bp
Breakpoint runtime-fatal-throw at 0x429a0 for runtime.fatalthrow() GOROOT/src/runtime/panic.go:1162 (0)
Breakpoint unrecovered-panic at 0x42a00 for runtime.fatalpanic() GOROOT/src/runtime/panic.go:1189 (0)
print runtime.curg._panic.arg
(dlv) quit
Would you like to kill the process? [Y/n] n
root@cloud:~/delve# dlv和golang
root@cloud:~/delve# dlv -h Command 'dlv' not found, did you mean: command 'ddv' from deb ncbi-tools-x11 command 'delv' from deb dnsutils command 'dav' from deb dav-text command 'lv' from deb lv command 'dlg' from deb pccts command 'dll' from deb brickos Try: apt install <deb name> root@cloud:~/delve# source ~/hyper/go_source root@cloud:~/delve# dlv -h Delve is a source level debugger for Go programs. Delve enables you to interact with your program by controlling the execution of the process, evaluating variables, and providing information of thread / goroutine state, CPU register state and more. The goal of this tool is to provide a simple yet powerful interface for debugging Go programs. Pass flags to the program you are debugging using `--`, for example: `dlv exec ./hello -- server --config conf/config.toml`
查看协程
(dlv) goroutines Goroutine 1 - User: GOROOT/src/runtime/sema.go:56 sync.runtime_Semacquire (0x73ac8) [semacquire] Goroutine 2 - User: GOROOT/src/runtime/proc.go:307 runtime.gopark (0x450c0) [force gc (idle)] Goroutine 3 - User: GOROOT/src/runtime/proc.go:307 runtime.gopark (0x450c0) [GC sweep wait] Goroutine 4 - User: GOROOT/src/runtime/proc.go:307 runtime.gopark (0x450c0) [GC scavenge wait] Goroutine 5 - User: GOROOT/src/runtime/proc.go:307 runtime.gopark (0x450c0) [GC worker (idle)] Goroutine 6 - User: GOROOT/src/runtime/proc.go:307 runtime.gopark (0x450c0) [GC worker (idle)] Goroutine 7 - User: GOROOT/src/runtime/proc.go:307 runtime.gopark (0x450c0) [GC worker (idle)] Goroutine 8 - User: GOROOT/src/runtime/proc.go:307 runtime.gopark (0x450c0) [GC worker (idle)] Goroutine 9 - User: GOROOT/src/runtime/proc.go:307 runtime.gopark (0x450c0) [GC worker (idle)] Goroutine 10 - User: GOROOT/src/runtime/proc.go:307 runtime.gopark (0x450c0) [GC worker (idle)] Goroutine 11 - User: GOROOT/src/runtime/proc.go:307 runtime.gopark (0x450c0) [GC worker (idle)] Goroutine 12 - User: GOROOT/src/runtime/proc.go:307 runtime.gopark (0x450c0) [GC worker (idle)] Goroutine 13 - User: GOROOT/src/runtime/proc.go:307 runtime.gopark (0x450c0) [GC worker (idle)] Goroutine 14 - User: GOROOT/src/runtime/proc.go:307 runtime.gopark (0x450c0) [GC worker (idle)]
could not open debug info
[root@centos7 ~]# cat go.source export GOPATH=/opt/gopath export GOROOT=/usr/local/go15.2/go export GOARCH=arm64 export GOOS=linux export GOTOOLS=/pkg/tool #export PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/root/bin:/root/bin:/bin:/bin export PATH=$PATH:$GOPATH/bin export PATH=$PATH:$GOROOT/bin [root@centos7 ~]# ls /opt/gopath/bin/dlv /opt/gopath/bin/dlv [root@centos7 ~]# ps -elf | grep nginx | grep ingress 4 S 101 64638 64619 0 80 0 - 7 SyS_rt 03:05 ? 00:00:00 /usr/bin/dumb-init -- /nginx-ingress-controller --publish-service=ingress-nginx/ingress-nginx-controller --election-id=ingress-controller-leader --ingress-class=nginx --configmap=ingress-nginx/ingress-nginx-controller --validating-webhook=:8443 --validating-webhook-certificate=/usr/local/certificates/cert --validating-webhook-key=/usr/local/certificates/key 4 S 101 64679 64638 0 80 0 - 11673 SyS_ep 03:05 ? 00:00:13 /nginx-ingress-controller --publish-service=ingress-nginx/ingress-nginx-controller --election-id=ingress-controller-leader --ingress-class=nginx --configmap=ingress-nginx/ingress-nginx-controller --validating-webhook=:8443 --validating-webhook-certificate=/usr/local/certificates/cert --validating-webhook-key=/usr/local/certificates/key [root@centos7 ~]# dlv attach 64679 could not attach to pid 64679: could not open debug info [root@centos7 ~]#