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const targetDir = Deno.execPath().replace(/[^\/\\]+$/, "");
const [libPrefix, libSuffix] = {
darwin: ["lib", "dylib"],
linux: ["lib", "so"],
windows: ["", "dll"],
}[Deno.build.os];
const libPath = `${targetDir}/${libPrefix}test_ffi.${libSuffix}`;
const dylib = Deno.dlopen(
libPath,
{
store_function: {
parameters: ["function"],
result: "void",
},
call_stored_function: {
parameters: [],
result: "void",
},
call_stored_function_thread_safe_and_log: {
parameters: [],
result: "void",
},
} as const,
);
const tripleLogCallback = () => {
console.log("Sync");
Promise.resolve().then(() => {
console.log("Async");
callback.unref();
});
setTimeout(() => {
console.log("Timeout");
callback.unref();
}, 10);
};
const callback = new Deno.UnsafeCallback(
{
parameters: [],
result: "void",
} as const,
tripleLogCallback,
);
// Store function
dylib.symbols.store_function(callback.pointer);
// Synchronous callback logging
console.log("SYNCHRONOUS");
dylib.symbols.call_stored_function();
console.log("STORED_FUNCTION called");
// Wait to make sure synch logging and async logging
await new Promise((res) => setTimeout(res, 100));
// Ref twice to make sure both `Promise.resolve().then()` and `setTimeout()`
// must resolve before isolate exists.
callback.ref();
callback.ref();
console.log("THREAD SAFE");
dylib.symbols.call_stored_function_thread_safe_and_log();
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