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Diffstat (limited to 'js/src/tests/test262/built-ins/Atomics/notify/notify-in-order.js')
-rw-r--r-- | js/src/tests/test262/built-ins/Atomics/notify/notify-in-order.js | 82 |
1 files changed, 82 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/Atomics/notify/notify-in-order.js b/js/src/tests/test262/built-ins/Atomics/notify/notify-in-order.js new file mode 100644 index 0000000000..b4abca79d3 --- /dev/null +++ b/js/src/tests/test262/built-ins/Atomics/notify/notify-in-order.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); |