wasm-bindgen/examples/raytrace-parallel/worker.js

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// synchronously, using the browser, import out shim JS scripts
importScripts('raytrace_parallel.js');
let booted = false;
let lastPtr = null;
// Wait for the main thread to send us the shared module/memory. Once we've got
// it, initialize it all with the `wasm_bindgen` global we imported via
// `importScripts`.
//
// After our first message all subsequent messages are an entry point to run,
// so we just do that.
self.onmessage = function(args) {
self.onmessage = event => run(event.data);
const [module, memory] = args.data;
wasm_bindgen(module, memory)
.then(() => {
booted = true;
if (lastPtr)
run(lastPtr);
})
.catch(e => setTimeout(() => { throw e; })); // propagate to main `onerror`
};
function run(ptr) {
if (!booted) {
lastPtr = ptr;
return;
}
lastPtr = null;
wasm_bindgen.child_entry_point(ptr);
}