naja_async_runtime 0.3.4

A lightweight universal runtime for futures.
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#![ feature( duration_constants ) ]

//! In this example we run a bunch of tasks in parallel. To verify that they run on different threads
//! we make them all sleep for a second and measure the time passed when they finish.


#[ cfg(not( target_arch = "wasm32" )) ]
//
fn main()
{
	use
	{
		async_runtime :: { *                                          } ,
		std           :: { time::{ Duration, Instant }, thread::sleep } ,
		futures       :: { future::{ FutureExt, join_all }            } ,
	};

	let program = async
	{
		let start = Instant::now();
		let mut tasks = Vec::new();

		for i in 0..8
		{
			// There isn't currently a convenient way to run tasks on a threadpool until all tasks have
			// finished, or until some shutdown signal is given.
			//
			// This is one of the ways tasks can synchronize and wait on eachother. Another way is to wait
			// on channels.
			//
			let (fut, handle) = async move
			{
				sleep( Duration::SECOND );

				println!( "Time elapsed at task {} end: {} second(s).", i, start.elapsed().as_secs() );

			}.remote_handle();

			rt::spawn( fut ).expect( "spawn task" );
			tasks.push( handle );
		}

		join_all( tasks ).await;
	};

	rt::block_on( program );
}


#[ cfg( target_arch = "wasm32" ) ]
//
fn main(){}