tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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test_wasm_jspi_profiler.js (3385B)

      1 Services.prefs.setBoolPref("javascript.options.wasm_js_promise_integration", true);
      2 registerCleanupFunction(() => {
      3  Services.prefs.clearUserPref("javascript.options.wasm_js_promise_integration");
      4 });
      5 
      6 // The tests runs code in tight loop with the profiler enabled. It is testing
      7 // behavior of JS PI specific methods and generated code.
      8 // It is not guarantee 100% hit since the profiler probes stacks every 1ms,
      9 // but it will happen often enough.
     10 add_task(async () => {
     11  if (!WebAssembly.promising) {
     12    return;
     13  }
     14 
     15  await Services.profiler.StartProfiler(10, 1, ["js"], ["GeckoMain"]);
     16  Assert.ok(Services.profiler.IsActive());
     17 
     18 /* Wasm module that is tested:
     19 (module
     20  (import "js" "compute_delta"
     21    (func $compute_delta (param i32) (result f64)))
     22 
     23  (func (export "update_state_export") (param i32) (result f64)
     24     (call $compute_delta (local.get 0))
     25  )
     26 )
     27 */
     28 
     29  var compute_delta = (i) => i / 100;
     30  const b = new Uint8Array([
     31    0, 97, 115, 109, 1, 0, 0, 0, 1, 6, 1, 96, 1, 127, 1, 124, 2, 20, 1, 2, 106,
     32    115, 13, 99, 111, 109, 112, 117, 116, 101, 95, 100, 101, 108, 116, 97,
     33    0, 0, 3, 2, 1, 0, 7, 23, 1, 19, 117, 112, 100, 97, 116, 101, 95, 115, 116,
     34    97, 116, 101, 95, 101, 120, 112, 111, 114, 116, 0, 1, 10, 8, 1, 6, 0, 32,
     35    0, 16, 0, 11, 0, 23, 4, 110, 97, 109, 101, 1, 16, 1, 0, 13, 99, 111, 109,
     36    112, 117, 116, 101, 95, 100, 101, 108, 116, 97
     37  ]);
     38  const ins = new WebAssembly.Instance(new WebAssembly.Module(b), {
     39    js: { compute_delta, },
     40  });
     41  var update_state = WebAssembly.promising(
     42    ins.exports.update_state_export
     43  );
     44 
     45  for (var i = 0; i < 1000; i++) {
     46    var r = await update_state(4);
     47    if (i % 222 == 0) {
     48      Assert.equal(r, .04);
     49    }
     50  }
     51 
     52  Assert.ok(true, "Done");
     53  await Services.profiler.StopProfiler();
     54 });
     55 
     56 add_task(async () => {
     57  if (!WebAssembly.promising) {
     58    return;
     59  }
     60 
     61  await Services.profiler.StartProfiler(10, 1, ["js"], ["GeckoMain"]);
     62  Assert.ok(Services.profiler.IsActive());
     63 
     64 /* Wasm module that is tested:
     65 (module
     66  (import "js" "compute_delta"
     67    (func $compute_delta (param i32) (result f64)))
     68 
     69  (func (export "update_state_export") (param i32) (result f64)
     70    (call $compute_delta (local.get 0))
     71  )
     72 )
     73 */
     74 
     75  var compute_delta = async (i) => i / 100;
     76  var suspending_compute_delta = new WebAssembly.Suspending(
     77    compute_delta
     78  );
     79  const b = new Uint8Array([
     80    0, 97, 115, 109, 1, 0, 0, 0, 1, 6, 1, 96, 1, 127, 1, 124, 2, 20, 1, 2, 106,
     81    115, 13, 99, 111, 109, 112, 117, 116, 101, 95, 100, 101, 108, 116, 97, 0,
     82    0, 3, 2, 1, 0, 7, 23, 1, 19, 117, 112, 100, 97, 116, 101, 95, 115, 116, 97,
     83    116, 101, 95, 101, 120, 112, 111, 114, 116, 0, 1, 10, 8, 1, 6, 0, 32, 0,
     84    16, 0, 11, 0, 23, 4, 110, 97, 109, 101, 1, 16, 1, 0, 13, 99, 111, 109, 112,
     85    117, 116, 101, 95, 100, 101, 108, 116, 97
     86  ]);
     87  const ins = new WebAssembly.Instance(new WebAssembly.Module(b), {
     88    js: { compute_delta: suspending_compute_delta, },
     89  });
     90  var update_state = WebAssembly.promising(
     91    ins.exports.update_state_export
     92  );
     93 
     94  for (var i = 0; i < 1000; i++) {
     95    var r = await update_state(4);
     96    if (i % 222 == 0) {
     97      Assert.equal(r, .04);
     98    }
     99  }
    100 
    101  Assert.ok(true, "Done");
    102  await Services.profiler.StopProfiler();
    103 });
    104 
    105 /**
    106 * All the tests are implemented with add_task, this starts them automatically.
    107 */
    108 function run_test() {
    109  do_get_profile();
    110  run_next_test();
    111 }