Files
Wez Furlong 42bf5c5e61 docs: adjust reference to improve search terms
We've been hoping that mkdocs-material will ship the much anticipated
search enhancements for some time, but it's time to recognize that
we need to do something to improve the search results with how
things work right now.

This is a big commit that changes the titles of the various pages
from the code-annotated synopsis to just the name of the function.

This makes it much easier now to match things like `kumo.reject`
directly, but `reject` remains awkward to find.

I think this is the best that we can do at this time.

A few functions have been annotated with the `status: deprecated` to
show as deprecated in the toc/nav (shows with a little trash can next
to the name).
2025-05-16 14:02:19 -07:00

45 lines
1.3 KiB
Markdown

# kumo.spawn_task
```lua
kumo.spawn_task { PARAMS }
```
{{since('2024.06.10-84e84b89')}}
!!! warning
This function should be called only from inside your
[init](../events/init.md) event handler.
This function will spawn a new thread that will trigger the specified event and
run it, allowing you to set up background tasks.
`PARAMS` is a lua table style object with the following fields:
* `event_name` - the name of the event which should be triggered in
the new thread. You must register an event handler for this event
using [kumo.on](on.md).
* `args` - an optional value that is passed to the event handler.
You can use this to pass arguments to the event handler, which is
useful in the case where you want to perform the same basic function
in a task, but with varying parameters.
```lua
kumo.on('init', function()
kumo.spawn_task {
event_name = 'my.task',
args = { 'hello', 'there' },
}
end)
kumo.on('my.task', function(args)
-- Prints: `I am the task. ["hello","there"]`
print('I am the task.', kumo.json_encode(args))
end)
```
!!! note
If your task event handler raises an error, it will be logged and
the task will stop. It is your responsibility to handle errors
to ensure that your task remains running. You can use the lua
`pcall` function to trap errors and react accordingly.