33 lines
No EOL
2.7 KiB
HTML
33 lines
No EOL
2.7 KiB
HTML
<!doctype html>
|
||
<html lang="en">
|
||
<head>
|
||
<meta charset="utf-8">
|
||
<meta name="viewport" content="width=device-width, initial-scale=1">
|
||
<title>Process.spawn — Ludic</title>
|
||
<meta name="description" content="Start a program; never blocks.">
|
||
<link rel="stylesheet" href="base.css">
|
||
<link rel="stylesheet" href="docs.css">
|
||
</head>
|
||
<body>
|
||
<header class="nav"><div class="wrap nav-in"><a class="brand" href="index.html"><span class="logo">L</span> Ludic</a><button class="nav-toggle" aria-label="Toggle menu" aria-expanded="false">☰</button><nav class="nav-links"><a href="index.html">Home</a><a href="api.html">API Reference</a><a class="nav-cta" href="https://git.workshopsoft.io/workshopsoft/ludic">Source ↗</a></nav></div></header>
|
||
<main class="wrap item">
|
||
<div class="crumbs"><a href="api.html">API Reference</a> <span>›</span> <a href="ns-process.html">Process</a> <span>›</span> <span class="here">Process.spawn</span></div>
|
||
<div class="item-head">
|
||
<span class="kind-badge kind-method">method</span>
|
||
<h1 id="top">Process.spawn</h1>
|
||
</div>
|
||
<code class="sig">Process.spawn(path, args) -> int</code>
|
||
<div class="desc"><p>Starts the program at <code>path</code> with the arguments in <code>args</code> (a <code>[]string</code>; the child's <code>argv[0]</code> is <code>path</code>) and returns a handle <code>>= 0</code> straight away, or <code>-1</code> when the program could not be started — a missing file, a file that is not executable, or all 16 handles in use.</p><p>No shell is involved, so every argument reaches the child exactly as written: spaces, quotes and <code>$</code> are not interpreted. The child inherits this process's environment and working directory. On Windows the arguments are joined into one command line quoted so the child's C runtime splits it back into the same list, the path and arguments cross as UTF-8 and are converted to UTF-16, and the child is started without a console window (a GUI program is unaffected; a console program runs hidden). Use an absolute path: there is no <code>PATH</code> search.</p><p>On macOS the child writes to this process's standard output and error. On Windows it inherits no handles, so a console child's output goes nowhere; nothing is captured on either platform.</p><p>See <a href="process-poll.html"><code>Process.poll</code></a> for the exit code.</p></div>
|
||
|
||
<div class="examples"><h2>Example</h2><pre data-lang="ludic">program Demo {
|
||
entry {
|
||
let h = Process.spawn("/bin/sh", ["-c", "exit 3"])
|
||
print(h >= 0)
|
||
}
|
||
}</pre></div>
|
||
|
||
<a class="back" href="api.html">← All symbols</a>
|
||
</main>
|
||
<script src="ludic-highlight.js"></script>
|
||
<script>Ludic.highlightAll(); Ludic.installCards(); Ludic.flashTarget();</script>
|
||
</body></html> |