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https://github.com/denoland/deno
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42 lines
1,000 B
JavaScript
42 lines
1,000 B
JavaScript
// Copyright 2018-2023 the Deno authors. All rights reserved. MIT license.
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// deno-lint-ignore-file
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const targetDir = Deno.execPath().replace(/[^\/\\]+$/, "");
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const [libPrefix, libSuffix] = {
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darwin: ["lib", "dylib"],
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linux: ["lib", "so"],
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windows: ["", "dll"],
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}[Deno.build.os];
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const libPath = `${targetDir}/${libPrefix}test_ffi.${libSuffix}`;
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const dylib = Deno.dlopen(libPath, {
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store_function: {
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parameters: ["function"],
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result: "void",
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},
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call_stored_function: {
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parameters: [],
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result: "void",
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},
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});
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const callback = new Deno.UnsafeCallback(
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{ parameters: [], result: "void" },
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() => {
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console.log("Callback on worker thread");
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},
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);
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callback.ref();
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self.addEventListener("message", ({ data }) => {
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if (data === "register") {
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dylib.symbols.store_function(callback.pointer);
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} else if (data === "call") {
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dylib.symbols.call_stored_function();
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} else if (data === "unref") {
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callback.unref();
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}
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self.postMessage("done");
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});
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