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# waitUntilExit()

Blocks the process until the receiver is finished.

```
func waitUntilExit()
```

## Discussion

This method first checks to see if the receiver is still running using [`isRunning`](/documentation/Foundation/Process/isRunning). Then it polls the current run loop using `NSDefaultRunLoopMode` until the task completes.

```objc
NSTask *task = // Create and initialize a task
[task launch];
[task waitUntilExit];
int status = [task terminationStatus];
 
if (status == 0) {
    NSLog(@"Task succeeded.");
} else {
    NSLog(@"Task failed.");
}
```

[`waitUntilExit()`](/documentation/Foundation/Process/waitUntilExit()) does not guarantee that the [`terminationHandler`](/documentation/Foundation/Process/terminationHandler) block has been fully executed before [`waitUntilExit()`](/documentation/Foundation/Process/waitUntilExit()) returns.

## See Also

[`-  launch`](/documentation/Foundation/Process/launch())

Launches the task represented by the receiver.


---

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