Macro spawn

macro_rules! spawn {
    (in $pool:expr, $($args:tt)*) => { ... };
    ($($args:tt)*) => { ... };
}

Utility macro to spawn functions.

Since a very common pattern is to pass multiple values to a spawned function by using tuples it can be cumbersome to repeat the arguments. This macro makes it possible to not repeat oneself. The first argument to the macro is a tuple of the arguments to pass, the second argument is the closure that should be invoked.

For each argument the following expressions are possible:

• ident: uses the local variable ident unchanged.
• ident => other: serializes ident and deserializes into other
• *ident: alias for *ident => ident.
• mut ident: alias for ident => mut ident.

Example:

let a = 42u32;
let b = 23u32;
let handle = procspawn::spawn!((a, mut b) || {
    b += 1;
    a + b
});

To spawn in a pool you need to pass the pool to it (prefixed with in):

let a = 42u32;
let b = 23u32;
let handle = procspawn::spawn!(in pool, (a, mut b) || {
    b += 1;
    a + b
});