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Diffstat (limited to '')
-rw-r--r-- | js/src/tests/test262/built-ins/Atomics/notify/notify-one.js | 72 |
1 files changed, 72 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/Atomics/notify/notify-one.js b/js/src/tests/test262/built-ins/Atomics/notify/notify-one.js new file mode 100644 index 0000000000..9142d8b4c2 --- /dev/null +++ b/js/src/tests/test262/built-ins/Atomics/notify/notify-one.js @@ -0,0 +1,72 @@ +// |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 one waiter if that's what the count is. +includes: [atomicsHelper.js] +features: [Atomics, SharedArrayBuffer, TypedArray] +---*/ + +const WAIT_INDEX = 0; // Agents wait here +const RUNNING = 1; // Accounting of live agents here +const NOTIFYCOUNT = 1; +const NUMAGENT = 3; +const BUFFER_SIZE = 4; + +const TIMEOUT = $262.agent.timeouts.long; + +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); + + // Waiters that are not woken will time out eventually. + $262.agent.report(Atomics.wait(i32a, ${WAIT_INDEX}, 0, ${TIMEOUT})); + $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); + +// Try to yield control to ensure the agent actually started to wait. +$262.agent.tryYield(); + +// There's a slight risk we'll fail to notify the desired count, if the preceding +// tryYield() took much longer than anticipated and workers have started timing +// out. +assert.sameValue( + Atomics.notify(i32a, 0, NOTIFYCOUNT), + NOTIFYCOUNT, + 'Atomics.notify(i32a, 0, NOTIFYCOUNT) returns the value of `NOTIFYCOUNT`' +); + +// Try to sleep past the timeout. +$262.agent.trySleep(TIMEOUT); + +// Collect and check results +const reports = []; +for (var i = 0; i < NUMAGENT; i++) { + reports.push($262.agent.getReport()); +} +reports.sort(); + +for (var i = 0; i < NOTIFYCOUNT; i++) { + assert.sameValue(reports[i], 'ok', 'The value of reports[i] is "ok"'); +} +for (var i = NOTIFYCOUNT; i < NUMAGENT; i++) { + assert.sameValue(reports[i], 'timed-out', 'The value of reports[i] is "timed-out"'); +} + +reportCompare(0, 0); |