v8/test/mjsunit/harmony/futex.js
Marja Hölttä 73d401b9d1 [test] Make worker related tests more fuzzable
Details: https://docs.google.com/document/d/1-Gi37Ks7rXMVVRkC_HkwGxenP7T1huQUOMrYOtkUCFk/edit?usp=sharing

Bug: v8:11340
Change-Id: Ia1d75270373a7ef2307e7ee0fd24da9ecfa27d18
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2643381
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Reviewed-by: Andreas Haas <ahaas@chromium.org>
Commit-Queue: Marja Hölttä <marja@chromium.org>
Cr-Commit-Position: refs/heads/master@{#72315}
2021-01-26 12:09:59 +00:00

249 lines
7.4 KiB
JavaScript

// Copyright 2015 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// Flags: --allow-natives-syntax --harmony-sharedarraybuffer
(function TestNonSharedArrayBehavior() {
var ab = new ArrayBuffer(16);
var i8a = new Int8Array(ab);
var i16a = new Int16Array(ab);
var i32a = new Int32Array(ab);
var ui8a = new Uint8Array(ab);
var ui8ca = new Uint8ClampedArray(ab);
var ui16a = new Uint16Array(ab);
var ui32a = new Uint32Array(ab);
var f32a = new Float32Array(ab);
var f64a = new Float64Array(ab);
[i8a, i16a, i32a, ui8a, ui8ca, ui16a, ui32a, f32a, f64a].forEach(function(
ta) {
assertThrows(function() { Atomics.wait(ta, 0, 0); });
if (ta === i32a) {
assertEquals(0, Atomics.notify(ta, 0, 1));
} else {
assertThrows(function() { Atomics.notify(ta, 0, 1); });
}
});
})();
(function TestFailsWithNonSharedInt32Array() {
var sab = new SharedArrayBuffer(16);
var i8a = new Int8Array(sab);
var i16a = new Int16Array(sab);
var ui8a = new Uint8Array(sab);
var ui8ca = new Uint8ClampedArray(sab);
var ui16a = new Uint16Array(sab);
var ui32a = new Uint32Array(sab);
var f32a = new Float32Array(sab);
var f64a = new Float64Array(sab);
[i8a, i16a, ui8a, ui8ca, ui16a, ui32a, f32a, f64a].forEach(function(
ta) {
assertThrows(function() { Atomics.wait(ta, 0, 0); });
assertThrows(function() { Atomics.notify(ta, 0, 1); });
});
})();
(function TestInvalidIndex() {
var sab = new SharedArrayBuffer(16);
var i32a = new Int32Array(sab);
// Valid indexes are 0-3.
[-1, 4, 100, 0xffffffff].forEach(function(invalidIndex) {
assertThrows(function() {
Atomics.wait(i32a, invalidIndex, 0);
}, RangeError);
assertThrows(function() {
Atomics.notify(i32a, invalidIndex, 0);
}, RangeError);
var validIndex = 0;
});
i32a = new Int32Array(sab, 8);
[-1, 2, 100, 0xffffffff].forEach(function(invalidIndex) {
assertThrows(function() {
Atomics.wait(i32a, invalidIndex, 0);
}, RangeError);
assertThrows(function() {
Atomics.notify(i32a, invalidIndex, 0);
}, RangeError);
var validIndex = 0;
});
})();
(function TestWaitTimeout() {
var i32a = new Int32Array(new SharedArrayBuffer(16));
var waitMs = 100;
var startTime = new Date();
assertEquals("timed-out", Atomics.wait(i32a, 0, 0, waitMs));
var endTime = new Date();
assertTrue(endTime - startTime >= waitMs);
})();
(function TestWaitNotEqual() {
var sab = new SharedArrayBuffer(16);
var i32a = new Int32Array(sab);
assertEquals("not-equal", Atomics.wait(i32a, 0, 42));
i32a = new Int32Array(sab, 8);
i32a[0] = 1;
assertEquals("not-equal", Atomics.wait(i32a, 0, 0));
})();
(function TestWaitNegativeTimeout() {
var i32a = new Int32Array(new SharedArrayBuffer(16));
assertEquals("timed-out", Atomics.wait(i32a, 0, 0, -1));
assertEquals("timed-out", Atomics.wait(i32a, 0, 0, -Infinity));
})();
(function TestWaitNotAllowed() {
%SetAllowAtomicsWait(false);
var i32a = new Int32Array(new SharedArrayBuffer(16));
assertThrows(function() {
Atomics.wait(i32a, 0, 0, -1);
});
%SetAllowAtomicsWait(true);
})();
(function TestWakePositiveInfinity() {
var i32a = new Int32Array(new SharedArrayBuffer(16));
Atomics.notify(i32a, 0, Number.POSITIVE_INFINITY);
})();
// In a previous version, this test caused a check failure
(function TestObjectWaitValue() {
var sab = new SharedArrayBuffer(16);
var i32a = new Int32Array(sab);
assertEquals("timed-out", Atomics.wait(i32a, 0, Math, 0));
})();
//// WORKER ONLY TESTS
if (this.Worker) {
var TestWaitWithTimeout = function(notify, timeout) {
var sab = new SharedArrayBuffer(16);
var i32a = new Int32Array(sab);
var workerScript =
`onmessage = function(msg) {
var i32a = new Int32Array(msg.sab, msg.offset);
var result = Atomics.wait(i32a, 0, 0, ${timeout});
postMessage(result);
};`;
var worker = new Worker(workerScript, {type: 'string'});
worker.postMessage({sab: sab, offset: offset});
// Spin until the worker is waiting on the futex.
while (%AtomicsNumWaitersForTesting(i32a, 0) != 1) {}
notify(i32a, 0, 1);
assertEquals("ok", worker.getMessage());
worker.terminate();
var worker2 = new Worker(workerScript, {type: 'string'});
var offset = 8;
var i32a2 = new Int32Array(sab, offset);
worker2.postMessage({sab: sab, offset: offset});
// Spin until the worker is waiting on the futex.
while (%AtomicsNumWaitersForTesting(i32a2, 0) != 1) {}
notify(i32a2, 0, 1);
assertEquals("ok", worker2.getMessage());
worker2.terminate();
// Futex should work when index and buffer views are different, but
// the real address is the same.
var worker3 = new Worker(workerScript, {type: 'string'});
i32a2 = new Int32Array(sab, 4);
worker3.postMessage({sab: sab, offset: 8});
// Spin until the worker is waiting on the futex.
while (%AtomicsNumWaitersForTesting(i32a2, 1) != 1) {}
notify(i32a2, 1, 1);
assertEquals("ok", worker3.getMessage());
worker3.terminate();
};
// Test various infinite timeouts
TestWaitWithTimeout(Atomics.notify, undefined);
TestWaitWithTimeout(Atomics.notify, NaN);
TestWaitWithTimeout(Atomics.notify, Infinity);
var TestWakeMulti = function(notify) {
var sab = new SharedArrayBuffer(20);
var i32a = new Int32Array(sab);
// SAB values:
// i32a[id], where id in range [0, 3]:
// 0 => Worker |id| is still waiting on the futex
// 1 => Worker |id| is not waiting on futex, but has not be reaped by the
// main thread.
// 2 => Worker |id| has been reaped.
//
// i32a[4]:
// always 0. Each worker is waiting on this index.
function workerCode() {
onmessage = function(msg) {
var id = msg.id;
var i32a = new Int32Array(msg.sab);
// Wait on i32a[4] (should be zero).
var result = Atomics.wait(i32a, 4, 0);
// Set i32a[id] to 1 to notify the main thread which workers were
// woken up.
Atomics.store(i32a, id, 1);
postMessage(result);
};
}
var id;
var workers = [];
for (id = 0; id < 4; id++) {
workers[id] = new Worker(workerCode, {type: 'function'});
workers[id].postMessage({sab: sab, id: id});
}
// Spin until all workers are waiting on the futex.
while (%AtomicsNumWaitersForTesting(i32a, 4) != 4) {}
// Wake up three waiters.
assertEquals(3, notify(i32a, 4, 3));
var wokenCount = 0;
var waitingId = 0 + 1 + 2 + 3;
while (wokenCount < 3) {
for (id = 0; id < 4; id++) {
// Look for workers that have not yet been reaped. Set i32a[id] to 2
// when they've been processed so we don't look at them again.
if (Atomics.compareExchange(i32a, id, 1, 2) == 1) {
assertEquals("ok", workers[id].getMessage());
workers[id].terminate();
waitingId -= id;
wokenCount++;
}
}
}
assertEquals(3, wokenCount);
assertEquals(0, Atomics.load(i32a, waitingId));
assertEquals(1, %AtomicsNumWaitersForTesting(i32a, 4));
// Finally wake the last waiter.
assertEquals(1, notify(i32a, 4, 1));
assertEquals("ok", workers[waitingId].getMessage());
workers[waitingId].terminate();
assertEquals(0, %AtomicsNumWaitersForTesting(i32a, 4));
};
TestWakeMulti(Atomics.notify);
}