/* 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"
#include "mozilla/gtest/MozAssertions.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(
"xpcom:TestThreadManager.cpp:SpinRunnable->Run()"_ns, 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);
RefPtr condition =
mozilla::MakeRefPtr<WaitCondition>(count, kRunnablesToDispatch);
RefPtr spinner = mozilla::MakeRefPtr<SpinRunnable>(condition);
nsCOMPtr<nsIThread> thread;
rv = NS_NewNamedThread(
"SpinEventLoop", getter_AddRefs(thread), spinner);
ASSERT_NS_SUCCEEDED(rv);
RefPtr counter = mozilla::MakeRefPtr<CountRunnable>(count);
for (uint32_t i =
0; i < kRunnablesToDispatch; ++i) {
rv = thread->Dispatch(counter, NS_DISPATCH_NORMAL);
ASSERT_NS_SUCCEEDED(rv);
}
rv = thread->Shutdown();
ASSERT_NS_SUCCEEDED(rv);
ASSERT_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);
RefPtr condition =
mozilla::MakeRefPtr<ErrorCondition>(count, kRunnablesToDispatch);
RefPtr spinner = mozilla::MakeRefPtr<SpinRunnable>(condition);
nsCOMPtr<nsIThread> thread;
rv = NS_NewNamedThread(
"SpinEventLoop", getter_AddRefs(thread), spinner);
ASSERT_NS_SUCCEEDED(rv);
RefPtr counter = mozilla::MakeRefPtr<CountRunnable>(count);
for (uint32_t i =
0; i < kRunnablesToDispatch; ++i) {
rv = thread->Dispatch(counter, NS_DISPATCH_NORMAL);
ASSERT_NS_SUCCEEDED(rv);
}
rv = thread->Shutdown();
ASSERT_NS_SUCCEEDED(rv);
ASSERT_NS_FAILED(spinner->SpinLoopResult());
}