1 files changed, 82 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/Atomics/notify/notify-in-order-one-time.js b/js/src/tests/test262/built-ins/Atomics/notify/notify-in-order-one-time.js
new file mode 100644
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+++ b/js/src/tests/test262/built-ins/Atomics/notify/notify-in-order-one-time.js
@@ -0,0 +1,82 @@
+// |reftest| skip-if(!this.hasOwnProperty('Atomics')||!this.hasOwnProperty('SharedArrayBuffer')||(this.hasOwnProperty('getBuildConfiguration')&&getBuildConfiguration('arm64-simulator'))) -- Atomics,SharedArrayBuffer is not enabled unconditionally, ARM64 Simulator cannot emulate atomics
+// Copyright (C) 2017 Mozilla Corporation.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-atomics.notify
+description: >
+  Test that Atomics.notify notifies agents in the order they are waiting.
+includes: [atomicsHelper.js]
+features: [Atomics, SharedArrayBuffer, TypedArray]
+---*/
+
+const NUMAGENT = 3;
+const WAIT_INDEX = 0;             // Waiters on this will be woken
+const SPIN = 1;                   // Worker i (zero-based) spins on location SPIN+i
+const RUNNING = SPIN + NUMAGENT;  // Accounting of live agents
+const BUFFER_SIZE = RUNNING + 1;
+
+// Create workers and start them all spinning.  We set atomic slots to make
+// them go into a wait, thus controlling the waiting order.  Then we notify them
+// one by one and observe the notification order.
+
+for (var i = 0; i < NUMAGENT; i++) {
+  $262.agent.start(`
+    $262.agent.receiveBroadcast(function(sab) {
+      const i32a = new Int32Array(sab);
+      Atomics.add(i32a, ${RUNNING}, 1);
+
+      while (Atomics.load(i32a, ${SPIN + i}) === 0) {
+        /* nothing */
+      }
+
+      $262.agent.report(${i});
+      Atomics.wait(i32a, ${WAIT_INDEX}, 0);
+      $262.agent.report(${i});
+
+      $262.agent.leaving();
+    });
+  `);
+}
+
+const i32a = new Int32Array(
+  new SharedArrayBuffer(Int32Array.BYTES_PER_ELEMENT * BUFFER_SIZE)
+);
+
+$262.agent.safeBroadcast(i32a);
+
+// Wait for agents to be running.
+$262.agent.waitUntil(i32a, RUNNING, NUMAGENT);
+
+var waiterlist = [];
+for (var i = 0; i < NUMAGENT; i++) {
+  assert.sameValue(
+    Atomics.store(i32a, SPIN + i, 1),
+    1,
+    `Atomics.store(i32a, SPIN + ${i}, 1) returns 1`
+  );
+
+  waiterlist.push($262.agent.getReport());
+
+  // Try to yield control to ensure the agent actually started to wait.
+  $262.agent.tryYield();
+}
+
+var notified = [];
+for (var i = 0; i < NUMAGENT; i++) {
+  assert.sameValue(
+    Atomics.notify(i32a, WAIT_INDEX, 1),
+    1,
+    `Atomics.notify(i32a, WAIT_INDEX, 1) returns 1 (${i})`
+  );
+
+  notified.push($262.agent.getReport());
+}
+
+assert.sameValue(
+  notified.join(''),
+  waiterlist.join(''),
+  'notified.join(\'\') returns waiterlist.join(\'\')'
+);
+
+reportCompare(0, 0);