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Diffstat (limited to 'book/en/src/by-example/message_passing.md')
| -rw-r--r-- | book/en/src/by-example/message_passing.md | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/book/en/src/by-example/message_passing.md b/book/en/src/by-example/message_passing.md index b80ae03..0dc8f85 100644 --- a/book/en/src/by-example/message_passing.md +++ b/book/en/src/by-example/message_passing.md @@ -1,8 +1,14 @@ # Message passing & capacity -Software tasks have support for message passing, this means that they can be spawned with an argument -as `foo::spawn(1)` which will run the task `foo` with the argument `1`. The number of arguments is not -limited and is exemplified in the following: +Software tasks support message passing, this means that software tasks can be spawned +with an argument: `foo::spawn(1)` which will run the task `foo` with the argument `1`. + +Capacity sets the size of the spawn queue for the task, if not specified capacity defaults to 1. + +In the example below, the capacity of task `foo` is `3`, allowing three simultaneous +pending spawns of `foo`. Exceeding this capacity is an `Error`. + +The number of arguments to a task is not limited: ``` rust {{#include ../../../../examples/message_passing.rs}} |