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2bfecc160b
TEST=build Change-Id: I2dd8ae69764af27f480a19995b491e98f52476ae Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/293902 Reviewed-by: Liam Appelbe <liama@google.com> Commit-Queue: Ryan Macnak <rmacnak@google.com>
53 lines
1.3 KiB
C++
53 lines
1.3 KiB
C++
// Copyright (c) 2015, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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#include "vm/thread_barrier.h"
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#include "platform/assert.h"
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#include "vm/random.h"
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#include "vm/thread_pool.h"
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#include "vm/unit_test.h"
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namespace dart {
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class FuzzTask : public ThreadPool::Task {
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public:
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FuzzTask(intptr_t num_rounds, ThreadBarrier* barrier, uint64_t seed)
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: num_rounds_(num_rounds), barrier_(barrier), rng_(seed) {}
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virtual void Run() {
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for (intptr_t i = 0; i < num_rounds_; ++i) {
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RandomSleep();
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barrier_->Sync();
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}
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barrier_->Release();
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}
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private:
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void RandomSleep() {
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int64_t ms = rng_.NextUInt32() % 4;
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if (ms > 0) {
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OS::Sleep(ms);
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}
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}
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const intptr_t num_rounds_;
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ThreadBarrier* barrier_;
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Random rng_;
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};
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VM_UNIT_TEST_CASE(ThreadBarrier) {
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const intptr_t kNumTasks = 5;
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const intptr_t kNumRounds = 500;
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ThreadBarrier* barrier = new ThreadBarrier(kNumTasks + 1, kNumTasks + 1);
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for (intptr_t i = 0; i < kNumTasks; ++i) {
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Dart::thread_pool()->Run<FuzzTask>(kNumRounds, barrier, i + 1);
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}
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for (intptr_t i = 0; i < kNumRounds; ++i) {
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barrier->Sync();
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}
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barrier->Release();
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}
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} // namespace dart
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