> For the complete documentation index, see [llms.txt](https://docs.gentee.org/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.gentee.org/syntax/multithreading.md).

# Multithreading

The Gentee language allows you to create multi-threaded scripts. In this case, part of the script can be performed in parallel, which reduces the time of its work. To execute some code in a separate thread, you must specify it in the **go** statement. The script will continue to perform the following constructions without waiting for the end of the code inside *go*, but immediately after the new thread is launched. The **go** statement returns the identifier of the created thread, which can be assigned to a variable of the **thread** type and then used in the multithreading functions. If the script has finished its work earlier than the child threads, then it will wait for all threads to finish working. If an error occurs in any of the threads while executing a multi-threaded script, all the threads are closed and the script returns this error.

```
GoStmt = "go" [ "(" GoArgs ")" ] Block
GoArgs = identifier ":" Expression { "," identifier ":" Expression }
```

```
func myThread {
  for i in 0..50 {
    Print(`x` )
    if i % 3 == 0 : sleep(5)
  }
}

run {
  thread th = go {
    for i in 0..100 {
      Print(` `, i )
      if i % 7 == 0 : sleep(5)
    }
  }
  suspend( th )
  go : myThread()
  resume(th)
  Print( `OK`)
  wait(th)
  Print( `END`)
}
```

You can pass any parameters in the **go** command. To do this, you need to specify the name of the parameter and its value separated by a colon. The type of the parameter is automatically determined by the passed value. If you pass structures or arrays, the parameter will be assigned a copy of the value.

```
run str {
  str s = "ok"
  thread th1 = go (a: s + " test") : ctxPar #= a
  thread th2 = go (a: Max(1,23), b: Min(100,87)) {
     ctxSum #= a + b
  }
  wait(th2)
  wait(th1)
  return #ctxPar + #ctxSum
}
```

##


---

# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.

## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter:

```
GET https://docs.gentee.org/syntax/multithreading.md?ask=<question>&goal=<endgoal>
```

`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal.

The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.