124 lines
3.2 KiB
C++
124 lines
3.2 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include <stdio.h>
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#include <stdlib.h>
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#include "nsXPCOM.h"
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#include "nsXPCOMCIDInternal.h"
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#include "nsIThreadPool.h"
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#include "nsComponentManagerUtils.h"
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#include "nsCOMPtr.h"
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#include "nsIRunnable.h"
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#include "nsThreadUtils.h"
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#include "mozilla/Atomics.h"
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#include "mozilla/Monitor.h"
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#include "gtest/gtest.h"
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using namespace mozilla;
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class Task final : public nsIRunnable
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{
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public:
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NS_DECL_THREADSAFE_ISUPPORTS
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explicit Task(int i) : mIndex(i) {}
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NS_IMETHOD Run() override
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{
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printf("###(%d) running from thread: %p\n", mIndex, (void *) PR_GetCurrentThread());
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int r = (int) ((float) rand() * 200 / RAND_MAX);
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PR_Sleep(PR_MillisecondsToInterval(r));
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printf("###(%d) exiting from thread: %p\n", mIndex, (void *) PR_GetCurrentThread());
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++sCount;
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return NS_OK;
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}
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static mozilla::Atomic<int> sCount;
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private:
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~Task() {}
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int mIndex;
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};
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NS_IMPL_ISUPPORTS(Task, nsIRunnable)
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mozilla::Atomic<int> Task::sCount;
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TEST(ThreadPool, Main)
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{
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nsCOMPtr<nsIThreadPool> pool = do_CreateInstance(NS_THREADPOOL_CONTRACTID);
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EXPECT_TRUE(pool);
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for (int i = 0; i < 100; ++i) {
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nsCOMPtr<nsIRunnable> task = new Task(i);
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EXPECT_TRUE(task);
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pool->Dispatch(task, NS_DISPATCH_NORMAL);
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}
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pool->Shutdown();
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EXPECT_EQ(Task::sCount, 100);
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}
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TEST(ThreadPool, Parallelism)
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{
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nsCOMPtr<nsIThreadPool> pool = do_CreateInstance(NS_THREADPOOL_CONTRACTID);
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EXPECT_TRUE(pool);
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// Dispatch and sleep to ensure we have an idle thread
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nsCOMPtr<nsIRunnable> r0 = new Runnable();
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pool->Dispatch(r0, NS_DISPATCH_SYNC);
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PR_Sleep(PR_SecondsToInterval(2));
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class Runnable1 : public Runnable {
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public:
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Runnable1(Monitor& aMonitor, bool& aDone)
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: mMonitor(aMonitor), mDone(aDone) {}
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NS_IMETHOD Run() override {
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MonitorAutoLock mon(mMonitor);
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if (!mDone) {
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// Wait for a reasonable timeout since we don't want to block gtests
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// forever should any regression happen.
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mon.Wait(PR_SecondsToInterval(300));
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}
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EXPECT_TRUE(mDone);
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return NS_OK;
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}
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private:
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Monitor& mMonitor;
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bool& mDone;
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};
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class Runnable2 : public Runnable {
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public:
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Runnable2(Monitor& aMonitor, bool& aDone)
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: mMonitor(aMonitor), mDone(aDone) {}
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NS_IMETHOD Run() override {
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MonitorAutoLock mon(mMonitor);
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mDone = true;
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mon.NotifyAll();
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return NS_OK;
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}
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private:
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Monitor& mMonitor;
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bool& mDone;
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};
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// Dispatch 2 events in a row. Since we are still within the thread limit,
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// We should wake up the idle thread and spawn a new thread so these 2 events
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// can run in parallel. We will time out if r1 and r2 run in sequence for r1
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// won't finish until r2 finishes.
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Monitor mon("ThreadPool::Parallelism");
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bool done = false;
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nsCOMPtr<nsIRunnable> r1 = new Runnable1(mon, done);
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nsCOMPtr<nsIRunnable> r2 = new Runnable2(mon, done);
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pool->Dispatch(r1, NS_DISPATCH_NORMAL);
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pool->Dispatch(r2, NS_DISPATCH_NORMAL);
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pool->Shutdown();
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}
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