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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "nsIThreadManager.h"
#include "nsCOMPtr.h"
#include "nsIThread.h"
#include "nsXPCOM.h"
#include "nsThreadUtils.h"
#include "nsServiceManagerUtils.h"
#include "mozilla/Atomics.h"
#include "gtest/gtest.h"
using mozilla::Atomic;
using mozilla::Runnable;
class WaitCondition final : public nsINestedEventLoopCondition {
public:
NS_DECL_THREADSAFE_ISUPPORTS
WaitCondition(Atomic<uint32_t>& aCounter, uint32_t aMaxCount)
: mCounter(aCounter), mMaxCount(aMaxCount) {}
NS_IMETHODIMP IsDone(bool* aDone) override {
*aDone = (mCounter == mMaxCount);
return NS_OK;
}
private:
~WaitCondition() = default;
Atomic<uint32_t>& mCounter;
const uint32_t mMaxCount;
};
NS_IMPL_ISUPPORTS(WaitCondition, nsINestedEventLoopCondition)
class SpinRunnable final : public Runnable {
public:
explicit SpinRunnable(nsINestedEventLoopCondition* aCondition)
: Runnable("SpinRunnable"), mCondition(aCondition), mResult(NS_OK) {}
NS_IMETHODIMP Run() {
nsCOMPtr<nsIThreadManager> threadMan =
do_GetService("@mozilla.org/thread-manager;1");
mResult = threadMan->SpinEventLoopUntil(mCondition);
return NS_OK;
}
nsresult SpinLoopResult() { return mResult; }
private:
~SpinRunnable() = default;
nsCOMPtr<nsINestedEventLoopCondition> mCondition;
Atomic<nsresult> mResult;
};
class CountRunnable final : public Runnable {
public:
explicit CountRunnable(Atomic<uint32_t>& aCounter)
: Runnable("CountRunnable"), mCounter(aCounter) {}
NS_IMETHODIMP Run() {
mCounter++;
return NS_OK;
}
private:
Atomic<uint32_t>& mCounter;
};
TEST(ThreadManager, SpinEventLoopUntilSuccess)
{
const uint32_t kRunnablesToDispatch = 100;
nsresult rv;
mozilla::Atomic<uint32_t> count(0);
nsCOMPtr<nsINestedEventLoopCondition> condition =
new WaitCondition(count, kRunnablesToDispatch);
RefPtr<SpinRunnable> spinner = new SpinRunnable(condition);
nsCOMPtr<nsIThread> thread;
rv = NS_NewNamedThread("SpinEventLoop", getter_AddRefs(thread), spinner);
ASSERT_TRUE(NS_SUCCEEDED(rv));
nsCOMPtr<nsIRunnable> counter = new CountRunnable(count);
for (uint32_t i = 0; i < kRunnablesToDispatch; ++i) {
rv = thread->Dispatch(counter, NS_DISPATCH_NORMAL);
ASSERT_TRUE(NS_SUCCEEDED(rv));
}
rv = thread->Shutdown();
ASSERT_TRUE(NS_SUCCEEDED(rv));
ASSERT_TRUE(NS_SUCCEEDED(spinner->SpinLoopResult()));
}
class ErrorCondition final : public nsINestedEventLoopCondition {
public:
NS_DECL_THREADSAFE_ISUPPORTS
ErrorCondition(Atomic<uint32_t>& aCounter, uint32_t aMaxCount)
: mCounter(aCounter), mMaxCount(aMaxCount) {}
NS_IMETHODIMP IsDone(bool* aDone) override {
if (mCounter == mMaxCount) {
return NS_ERROR_ILLEGAL_VALUE;
}
return NS_OK;
}
private:
~ErrorCondition() = default;
Atomic<uint32_t>& mCounter;
const uint32_t mMaxCount;
};
NS_IMPL_ISUPPORTS(ErrorCondition, nsINestedEventLoopCondition)
TEST(ThreadManager, SpinEventLoopUntilError)
{
const uint32_t kRunnablesToDispatch = 100;
nsresult rv;
mozilla::Atomic<uint32_t> count(0);
nsCOMPtr<nsINestedEventLoopCondition> condition =
new ErrorCondition(count, kRunnablesToDispatch);
RefPtr<SpinRunnable> spinner = new SpinRunnable(condition);
nsCOMPtr<nsIThread> thread;
rv = NS_NewNamedThread("SpinEventLoop", getter_AddRefs(thread), spinner);
ASSERT_TRUE(NS_SUCCEEDED(rv));
nsCOMPtr<nsIRunnable> counter = new CountRunnable(count);
for (uint32_t i = 0; i < kRunnablesToDispatch; ++i) {
rv = thread->Dispatch(counter, NS_DISPATCH_NORMAL);
ASSERT_TRUE(NS_SUCCEEDED(rv));
}
rv = thread->Shutdown();
ASSERT_TRUE(NS_SUCCEEDED(rv));
ASSERT_TRUE(NS_FAILED(spinner->SpinLoopResult()));
}
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