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// Copyright 2018-2021 the Deno authors. All rights reserved. MIT license.
// deno-lint-ignore-file
import { assertThrows } from "../../test_util/std/testing/asserts.ts";
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 resourcesPre = Deno.resources();
// dlopen shouldn't panic
assertThrows(() => {
Deno.dlopen("cli/src/main.rs", {});
});
assertThrows(
() => {
Deno.dlopen(libPath, {
non_existent_symbol: {
parameters: [],
result: "void",
},
});
},
Error,
"Failed to register symbol non_existent_symbol",
);
const dylib = Deno.dlopen(libPath, {
"print_something": { parameters: [], result: "void" },
"print_buffer": { parameters: ["pointer", "usize"], result: "void" },
"print_buffer2": {
parameters: ["pointer", "usize", "pointer", "usize"],
result: "void",
},
"return_buffer": { parameters: [], result: "pointer" },
"is_null_ptr": { parameters: ["pointer"], result: "u8" },
"add_u32": { parameters: ["u32", "u32"], result: "u32" },
"add_i32": { parameters: ["i32", "i32"], result: "i32" },
"add_u64": { parameters: ["u64", "u64"], result: "u64" },
"add_i64": { parameters: ["i64", "i64"], result: "i64" },
"add_usize": { parameters: ["usize", "usize"], result: "usize" },
"add_isize": { parameters: ["isize", "isize"], result: "isize" },
"add_f32": { parameters: ["f32", "f32"], result: "f32" },
"add_f64": { parameters: ["f64", "f64"], result: "f64" },
"fill_buffer": { parameters: ["u8", "pointer", "usize"], result: "void" },
"sleep_blocking": { parameters: ["u64"], result: "void", nonblocking: true },
"nonblocking_buffer": {
parameters: ["pointer", "usize"],
result: "void",
nonblocking: true,
},
});
dylib.symbols.print_something();
const buffer = new Uint8Array([1, 2, 3, 4, 5, 6, 7, 8]);
const buffer2 = new Uint8Array([9, 10]);
dylib.symbols.print_buffer(buffer, buffer.length);
dylib.symbols.print_buffer2(buffer, buffer.length, buffer2, buffer2.length);
const ptr = dylib.symbols.return_buffer();
dylib.symbols.print_buffer(ptr, 8);
const ptrView = new Deno.UnsafePointerView(ptr);
const into = new Uint8Array(6);
const into2 = new Uint8Array(3);
const into2ptr = Deno.UnsafePointer.of(into2);
const into2ptrView = new Deno.UnsafePointerView(into2ptr);
const into3 = new Uint8Array(3);
ptrView.copyInto(into);
console.log([...into]);
ptrView.copyInto(into2, 3);
console.log([...into2]);
into2ptrView.copyInto(into3);
console.log([...into3]);
const string = new Uint8Array([
...new TextEncoder().encode("Hello from pointer!"),
0,
]);
const stringPtr = Deno.UnsafePointer.of(string);
const stringPtrview = new Deno.UnsafePointerView(stringPtr);
console.log(stringPtrview.getCString());
console.log(stringPtrview.getCString(11));
console.log(Boolean(dylib.symbols.is_null_ptr(ptr)));
console.log(Boolean(dylib.symbols.is_null_ptr(null)));
console.log(Boolean(dylib.symbols.is_null_ptr(Deno.UnsafePointer.of(into))));
console.log(dylib.symbols.add_u32(123, 456));
assertThrows(
() => {
dylib.symbols.add_u32(-1, 100);
},
TypeError,
"Expected FFI argument to be an unsigned integer, but got Number(-1)",
);
assertThrows(
() => {
dylib.symbols.add_u32(null, 100);
},
TypeError,
"Expected FFI argument to be an unsigned integer, but got Null",
);
console.log(dylib.symbols.add_i32(123, 456));
console.log(dylib.symbols.add_u64(123, 456));
console.log(dylib.symbols.add_i64(123, 456));
console.log(dylib.symbols.add_usize(123, 456));
console.log(dylib.symbols.add_isize(123, 456));
console.log(dylib.symbols.add_f32(123.123, 456.789));
console.log(dylib.symbols.add_f64(123.123, 456.789));
// test mutating sync calls
function test_fill_buffer(fillValue, arr) {
let buf = new Uint8Array(arr);
dylib.symbols.fill_buffer(fillValue, buf, buf.length);
for (let i = 0; i < buf.length; i++) {
if (buf[i] !== fillValue) {
throw new Error(`Found '${buf[i]}' in buffer, expected '${fillValue}'.`);
}
}
}
test_fill_buffer(0, [2, 3, 4]);
test_fill_buffer(5, [2, 7, 3, 2, 1]);
// Test non blocking calls
function deferred() {
let methods;
const promise = new Promise((resolve, reject) => {
methods = {
async resolve(value) {
await value;
resolve(value);
},
reject(reason) {
reject(reason);
},
};
});
return Object.assign(promise, methods);
}
const promise = deferred();
const buffer3 = new Uint8Array([1, 2, 3, 4, 5, 6, 7, 8]);
dylib.symbols.nonblocking_buffer(buffer3, buffer3.length).then(() => {
promise.resolve();
});
await promise;
const start = performance.now();
dylib.symbols.sleep_blocking(100).then(() => {
console.log("After");
console.log(performance.now() - start >= 100);
// Close after task is complete.
cleanup();
});
console.log("Before");
console.log(performance.now() - start < 100);
function cleanup() {
dylib.close();
const resourcesPost = Deno.resources();
const preStr = JSON.stringify(resourcesPre, null, 2);
const postStr = JSON.stringify(resourcesPost, null, 2);
if (preStr !== postStr) {
throw new Error(
`Difference in open resources before dlopen and after closing:
Before: ${preStr}
After: ${postStr}`,
);
}
console.log("Correct number of resources");
}
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