wren/test/core/fiber/transfer_to_done.wren

var a = Fiber.new {
  System.print("run")
}

a.call() // expect: run
a.transfer() // expect runtime error: Cannot transfer to a finished fiber.
Revise low level fiber semantics to play nicer with schedulers. Now that I'm starting to write a real async scheduler on top of Wren's basic fiber API, I have a better feel for what it needs. It turns out run() is not it. - Remove run() methods. - Add transfer() which leaves the caller of the invoked fiber alone. - Add suspend() to return control to the host application. - Add Timer.schedule() to start a new independently scheduled fiber. - Change Timer.sleep() so that it only transfers control to explicitly scheduled fibers, not any one. 2015-08-30 22:15:37 -07:00			`var a = Fiber.new {`
"IO" -> "System". Get rid of the separate opt-in IO class and replace it with a core System class. - Remove wren_io.c, wren_io.h, and io.wren. - Remove the flags that disable it. - Remove the overloads for print() with different arity. (It was an experiment, but I don't think it's that useful.) - Remove IO.read(). That will reappear using libuv in the CLI at some point. - Remove IO.time. Doesn't seem to have been used. - Update all of the tests, docs, etc. I'm sorry for all the breakage this causes, but I think "System" is a better name for this class (it makes it natural to add things like "System.gc()") and frees up "IO" for referring to the CLI's IO module. 2015-09-15 07:46:09 -07:00			`System.print("run")`
Revise low level fiber semantics to play nicer with schedulers. Now that I'm starting to write a real async scheduler on top of Wren's basic fiber API, I have a better feel for what it needs. It turns out run() is not it. - Remove run() methods. - Add transfer() which leaves the caller of the invoked fiber alone. - Add suspend() to return control to the host application. - Add Timer.schedule() to start a new independently scheduled fiber. - Change Timer.sleep() so that it only transfers control to explicitly scheduled fibers, not any one. 2015-08-30 22:15:37 -07:00			`}`

			`a.call() // expect: run`
			`a.transfer() // expect runtime error: Cannot transfer to a finished fiber.`