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Introduction\n\n[![GoDoc](https://godoc.org/github.com/ITcathyh/alloter?status.svg)](https://godoc.org/github.com/guoquanwei/alloter)\n\nAlloter is a goroutine's concurrent toolkit to help execute functions concurrently in an efficient and safe way.\n\nIt was inspired by a Node.js package's function, [bluebird](https://npmjs.com/package/bluebird) .map()\n\n* It supports concurrency limits.\n* It supports recovery goroutine's panic.\n* It supports specifying the overall timeout to avoid blocking.\n* It supports the use of goroutines pool(invoke [ants/v2](https://github.com/panjf2000/ants)).\n* It supports context passing; listen ctx.Done(), will return.\n* It supports ending other tasks when an error occurs.\n\n### init Alloter\n```go\n// simple concurrency\nfunc NewAlloter() *Alloter\n\n// concurrency control\nfunc NewCtrlAlloter(workerNum int) *Alloter\n\n// goroutines pool from ants/v2\nfunc NewPooledAlloter(workerNum int) *Alloter\n\n```\n\n### exec tasks\n```go\ntype Task func() error\n\nfunc (c *Alloter) Exec(tasks []Task) error\n\nfunc (c *Alloter) ExecWithContext(ctx context.Context, tasks []Task) error\n\n```\n\n\n### Demo!!!\n\n```go\npackage main\n\nimport (\n\t\"github.com/guoquanwei/alloter\"\n\t\"sync\"\n)\n\nfunc (that *Controller) TestGoRunLock(ctx echo.Context) {\n\tuserIds := []string{\n\t\t\"uuid_1\",\n\t\t\"uuid_2\",\n\t}\n\tvar tasks []alloter.Task\n\tvar users []third_parts.User\n\tmux := sync.Mutex{}\n\tfor _, uid := range userIds {\n\t\tfunc(userId string) {\n\t\t\ttasks = append(tasks, func() error {\n\t\t\t\tuser, resErr := third_parts.GetUserById(userId)\n\t\t\t\tif resErr != nil {\n\t\t\t\t\treturn resErr\n\t\t\t\t}\n\t\t\t\tmux.Lock()\n\t\t\t\tusers = append(users, user)\n\t\t\t\tmux.Unlock()\n\t\t\t\treturn nil\n\t\t\t})\n\t\t}(uid)\n\t}\n\tp := alloter.NewCtrlAlloter(1)\n\terr = p.ExecWithContext(ctx.Request().Context(), tasks)\n\tif err != nil {\n\t\tctx.JSON(500, err.Error())\n\t\treturn\n\t}\n\tctx.JSON(200, users)\n\treturn\n}\n\n```","funding_links":[],"categories":[],"sub_categories":[],"project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fguoquanwei%2Falloter","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Fguoquanwei%2Falloter","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fguoquanwei%2Falloter/lists"}