1. 第一种方法：工具调试 1.1. ps -ef 查看进程号
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[root@local]# ps -ef |grep test root 967496 967456 99 09:57 ? 00:06:52 /usr/bin/test-controller-cn -conf /etc/tester/config.yaml root 970312 964216 0 09:59 pts/29 00:00:00 grep --color=auto test |
1.1. ps -eLF 查看进程对应线程，采用的CPU核心号 -e 或者-A，选择所有的进程 L 显示线程信息 F 显示该线程使用CPU核心序号 [crayon-63d9803f00b2388797… 阅读更多 »Golang程序性能排查
1. dlv的安装 delve,简称dlv是go语言的最常用的调试器，获取dlv的操作命令如下：
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go get -u github.com/derekparker/delve/cmd/dlv #验证dlv安装 dlv version |
安装后直接运行dlv将会看到如下信息：
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[root@localhost ~]# dlv 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` Usage: dlv [command] Available Commands: attach Attach to running process and begin debugging. connect Connect to a headless debug server. core Examine a core dump. dap [EXPERIMENTAL] Starts a headless TCP server communicating via Debug Adaptor Protocol (DAP). debug Compile and begin debugging main package in current directory, or the package specified. exec Execute a precompiled binary, and begin a debug session. help Help about any command run Deprecated command. Use 'debug' instead. test Compile test binary and begin debugging program. trace Compile and begin tracing program. version Prints version. Flags: --accept-multiclient Allows a headless server to accept multiple client connections. --allow-non-terminal-interactive Allows interactive sessions of Delve that don't have a terminal as stdin, stdout and stderr --api-version int Selects API version when headless. New clients should use v2. Can be reset via RPCServer.SetApiVersion. See Documentation/api/json-rpc/README.md. (default 1) --backend string Backend selection (see 'dlv help backend'). (default "default") --build-flags string Build flags, to be passed to the compiler. For example: --build-flags="-tags=integration -mod=vendor -cover -v" --check-go-version Exits if the version of Go in use is not compatible (too old or too new) with the version of Delve. (default true) --disable-aslr Disables address space randomization --headless Run debug server only, in headless mode. -h, --help help for dlv --init string Init file, executed by the terminal client. -l, --listen string Debugging server listen address. (default "127.0.0.1:0") --log Enable debugging server logging. --log-dest string Writes logs to the specified file or file descriptor (see 'dlv help log'). --log-output string Comma separated list of components that should produce debug output (see 'dlv help log') --only-same-user Only connections from the same user that started this instance of Delve are allowed to connect. (default true) -r, --redirect stringArray Specifies redirect rules for target process (see 'dlv help redirect') --wd string Working directory for running the program. Additional help topics: dlv backend Help about the --backend flag. dlv log Help about logging flags. dlv redirect Help about file redirection. Use "dlv [command] --help" for more information about a command. |
2. 基础命令 上面列举了dlv的一些命令，其中常用的有如h… 阅读更多 »Golang的Dlv调试
1. 概述 前面介绍了golang的一般单元测试，以及如何使用vscode进行高效的go单元测试开发。同时也说过一般单元测试重点在于cpu和内存类型的测试，而对io类型的测试是比较敏感的。那么针对这类测试就没法做单元测试了吗？有的，肯定是有的，这就是mock技术。 mock测试不但… 阅读更多 »Golang Mock使用入门
golangci-lint安装及运行
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go get -u github.com/golangci/golangci-lint pushd ${GOPATH}/pkg/mod/github.com/golangci/golangci-lint@v1.41.1/cmd/golangci-lint go build cp golangci-lint /usr/bin popd #运行 golangci-lint run |
code_check.sh
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#!/usr/bin/env bash function Fail() { echo "Abort with FAILs." exit 1 } echo -e "Process go vet...\c" go vet $(go list ./... | grep -v /vendor/) || Fail echo "PASS" echo -e "Process ci-lint...\c" which golangci-lint 1>/dev/null || (echo "Installing golangci-lint" && go install github.com/golangci/golangci-lint/cmd/golangci-lint@v1.32.2) golangci-lint run --timeout 10m || Fail echo "PASS" echo -e "Process go test...\c" go test $(go list ./... | grep -v /vendor/) -timeout=10s || Fail echo "PASS" echo "All check passed." |
Go中Channel发送和接收操作指南 1. 前言 先来看一道面试题： 对已经关闭的 chan 进行读写，会怎么样？为什么？ 在golang中channel属于较为核心的一个功能,尤其在go协程中,channel功能尤为重要；如果多个任务之间需要通信，可能就要用到通道（channel）。 2. Channel的定义 声明并初始化… 阅读更多 »Golang Channel发送和接收
在Go 1.11之后推出了依赖包管理工具Go Modules之后，Go项目可以在 GOPATH 之外的位置创建，当项目中仅使用了公有库作为依赖时，使用 go get 或 go mod 更新依赖一切如初，没有任何问题。 由于Go Modules默认使用代理去更新依赖，所以当使用了私有仓库作为依赖时，Go更新依赖的相关命令将不再可用… 阅读更多 »Go Mod引用私有库
本文主要涉及从老版本"github.com/golang/protobuf" 迁移为新版本 "google.golang.org/protobuf" 所要注意到的技术细节；其中还有少量新版本使用方法; 1. 获取google代码protobuf [crayon-63d9803f089244… 阅读更多 »Golang中protobuf版本升级