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// Copyright 2019 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "content/browser/scheduler/browser_ui_thread_scheduler.h"
#include <memory>
#include <utility>
#include <vector>
#include "base/feature_list.h"
#include "base/functional/callback_helpers.h"
#include "base/run_loop.h"
#include "base/task/single_thread_task_runner.h"
#include "base/task/thread_pool/thread_pool_instance.h"
#include "base/test/bind.h"
#include "base/test/mock_callback.h"
#include "base/test/scoped_feature_list.h"
#include "base/test/test_future.h"
#include "content/common/features.h"
#include "content/public/browser/browser_thread.h"
#include "partition_alloc/extended_api.h"
#include "partition_alloc/partition_alloc_for_testing.h"
#include "partition_alloc/scheduler_loop_quarantine_support.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace content {
namespace {
using StrictMockTask =
testing::StrictMock<base::MockCallback<base::RepeatingCallback<void()>>>;
base::OnceClosure RunOnDestruction(base::OnceClosure task) {
return base::BindOnce(
[](std::unique_ptr<base::ScopedClosureRunner>) {},
std::make_unique<base::ScopedClosureRunner>(std::move(task)));
}
base::OnceClosure PostOnDestruction(
scoped_refptr<base::SingleThreadTaskRunner> task_queue,
base::OnceClosure task) {
return RunOnDestruction(base::BindOnce(
[](base::OnceClosure task,
scoped_refptr<base::SingleThreadTaskRunner> task_queue) {
task_queue->PostTask(FROM_HERE, std::move(task));
},
std::move(task), task_queue));
}
TEST(BrowserUIThreadSchedulerTest, DestructorPostChainDuringShutdown) {
auto browser_ui_thread_scheduler_ =
std::make_unique<BrowserUIThreadScheduler>();
browser_ui_thread_scheduler_->GetHandle()->OnStartupComplete();
auto task_queue =
browser_ui_thread_scheduler_->GetHandle()->GetBrowserTaskRunner(
BrowserUIThreadScheduler::QueueType::kDefault);
bool run = false;
task_queue->PostTask(
FROM_HERE,
PostOnDestruction(
task_queue,
PostOnDestruction(task_queue,
RunOnDestruction(base::BindOnce(
[](bool* run) { *run = true; }, &run)))));
EXPECT_FALSE(run);
browser_ui_thread_scheduler_.reset();
EXPECT_TRUE(run);
}
class BrowserUIThreadSchedulerLoopQuarantineTest : public testing::Test {
private:
base::test::ScopedFeatureList scoped_feature_list_{
features::
kPartitionAllocSchedulerLoopQuarantineTaskObserverForBrowserUIThread};
};
TEST_F(BrowserUIThreadSchedulerLoopQuarantineTest,
TestAllocationGetPurgedFromQuarantineAfterTaskCompletion) {
#if defined(MEMORY_TOOL_REPLACES_ALLOCATOR)
GTEST_SKIP() << "This test does not work with memory tools.";
#elif !PA_BUILDFLAG(USE_PARTITION_ALLOC_AS_MALLOC) || \
!PA_CONFIG(THREAD_CACHE_SUPPORTED)
GTEST_SKIP() << "This test requires PA-E and ThreadCache.";
#else
std::unique_ptr<BrowserUIThreadScheduler> browser_ui_thread_scheduler =
BrowserUIThreadScheduler::CreateForTesting();
browser_ui_thread_scheduler->GetHandle()->OnStartupComplete();
// Pick up a queue.
auto task_queue =
browser_ui_thread_scheduler->GetHandle()->GetBrowserTaskRunner(
BrowserUIThreadScheduler::QueueType::kUserBlocking);
// Prepare PA root for testing.
partition_alloc::PartitionOptions opts;
opts.scheduler_loop_quarantine_thread_local_config.enable_quarantine = true;
opts.scheduler_loop_quarantine_thread_local_config.branch_capacity_in_bytes =
4096;
partition_alloc::PartitionAllocatorForTesting allocator(opts);
partition_alloc::PartitionRoot& root = *allocator.root();
// Disables ThreadCache for the default allocator and enables it for the
// testing allocator.
partition_alloc::internal::ThreadCacheProcessScopeForTesting tcache_scope(
&root);
partition_alloc::internal::
ScopedSchedulerLoopQuarantineBranchAccessorForTesting branch_accessor(
&root);
void* ptr = root.Alloc(16);
base::test::TestFuture<void> future;
task_queue->PostTaskAndReply(
FROM_HERE, base::BindLambdaForTesting([&]() {
EXPECT_FALSE(branch_accessor.IsQuarantined(ptr));
root.Free<
partition_alloc::internal::FreeFlags::kSchedulerLoopQuarantine>(
ptr);
EXPECT_TRUE(branch_accessor.IsQuarantined(ptr));
}),
future.GetCallback());
EXPECT_TRUE(future.Wait());
// `ptr` must not be in the quarantine as the scheduler finished its loop.
EXPECT_FALSE(branch_accessor.IsQuarantined(ptr));
#endif
}
} // namespace
} // namespace content
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