b6d4d9be9c
This is a reland of commitb1020a4345Changes since revert: - Fixed global safepoint interrupts in https://chromium-review.googlesource.com/c/v8/v8/+/3820913 Original change's description: > Reland "[shared-struct] Add Atomics.Condition" > > This is a reland of commite2066ff6bf> > Changes since revert: > - Rebased againstc991852491, which > uses the external pointer table for the WaiterQueueNode stored > in the state field when compressing pointers. This relaxes > the alignment requirement of the state field to be 4-bytes when > compressing pointers. > - Moved the state field into the JSSynchronizationPrimitive base > class, since alignment and padding can now be made simpler. > > Original change's description: > > [shared-struct] Add Atomics.Condition > > > > Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3630350 > > Reviewed-by: Dominik Inführ <dinfuehr@chromium.org> > > Reviewed-by: Adam Klein <adamk@chromium.org> > > Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3763787 > Reviewed-by: Adam Klein <adamk@chromium.org> > Reviewed-by: Dominik Inführ <dinfuehr@chromium.org> Bug: v8:12547 Change-Id: Ibc6de74c7853e4ea766ff2c70f92339ba69f2675 Cq-Include-Trybots: luci.v8.try:v8_linux_arm64_rel_ng,v8_linux64_tsan_rel_ng Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3820901 Reviewed-by: Adam Klein <adamk@chromium.org> Commit-Queue: Shu-yu Guo <syg@chromium.org> Cr-Commit-Position: refs/heads/main@{#82368}
37 lines
984 B
JavaScript
37 lines
984 B
JavaScript
// Copyright 2022 the V8 project authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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//
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// Flags: --harmony-struct --allow-natives-syntax
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let mutex = new Atomics.Mutex;
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let cv = new Atomics.Condition;
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(function TestConditionWaitNotAllowed() {
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assertThrows(() => {
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Atomics.Mutex.lock(mutex, () => {
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%SetAllowAtomicsWait(false);
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Atomics.Condition.wait(cv, mutex);
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});
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});
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%SetAllowAtomicsWait(true);
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})();
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(function TestConditionMutexNotHeld() {
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// Cannot wait on a mutex not owned by the current thread.
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assertThrows(() => {
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Atomics.Condition.wait(cv, mutex);
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});
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})();
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(function TestConditionNoWaiters() {
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// Notify returns number of threads woken up.
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assertEquals(0, Atomics.Condition.notify(cv));
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})();
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(function TestConditionWaitTimeout() {
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Atomics.Mutex.lock(mutex, () => {
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assertEquals(false, Atomics.Condition.wait(cv, mutex, 100));
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});
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})();
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