Orkuncakilkaya
43d5eb5b88
Process.spawn/poll/kill/free - non-blocking child processes with no shell: posix_spawn on macOS (process.ll), CreateProcessW with MSVC-quoted arguments and no console window on Windows (process_win.ll), linked only when a program uses Process.*. Http.save_to streams a response body into a file (NSURLSession with a run-time delegate class on macOS, the WinHTTP read loop on Windows); Http.received / Http.expected report progress while it is pending. Freeing a pending request cancels it and parks the slot until the worker has finished. App.window_hide / App.window_show take the game's window off the screen and back without closing it; the run goes on while hidden. Docs, examples, tests and a changeset. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
1.3 KiB
1.3 KiB
| id | name | category | kind | tokens | sig | tip | order | ns | member |
|---|---|---|---|---|---|---|---|---|---|
| process-poll | Process.poll | process | namespace-method | Process.poll | Process.poll(handle) -> int | -1 while running, else the exit code. | 1 | Process | poll |
Returns -1 while the child is still running and its exit code once it has ended; it never waits. The code is kept, so asking again gives the same answer until Process.free.
A child ended by a signal (macOS) answers 128 plus the signal number, as a shell reports it — 137 after Process.kill, on both platforms. On Windows the code is the child's DWORD exit code as an int, so a crash such as 0xC0000005 arrives as a negative number (test for != 0, not > 0); a code of 0xFFFFFFFF is reported as 255 so that -1 always means "still running". A handle that is not one answers 255.
program Demo {
var game: int = -1
handler Watch phase Update {
if game >= 0 {
let code = Process.poll(handle: game)
if code >= 0 or code < -1 {
if code != 0 { print("the game crashed") }
Process.free(handle: game)
game = -1
}
}
}
}