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// Copyright 2013 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "cc/resources/worker_pool.h"
#include <vector>
#include "cc/base/completion_event.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace cc {
namespace {
class FakeWorkerPoolTaskImpl : public internal::WorkerPoolTask {
public:
FakeWorkerPoolTaskImpl(const base::Closure& callback,
const base::Closure& reply)
: callback_(callback),
reply_(reply) {
}
// Overridden from internal::WorkerPoolTask:
virtual void RunOnWorkerThread(unsigned thread_index) OVERRIDE {
if (!callback_.is_null())
callback_.Run();
}
virtual void CompleteOnOriginThread() OVERRIDE {
if (!reply_.is_null())
reply_.Run();
}
private:
virtual ~FakeWorkerPoolTaskImpl() {}
const base::Closure callback_;
const base::Closure reply_;
DISALLOW_COPY_AND_ASSIGN(FakeWorkerPoolTaskImpl);
};
class FakeWorkerPool : public WorkerPool {
public:
FakeWorkerPool() : WorkerPool(1, "test") {}
virtual ~FakeWorkerPool() {}
static scoped_ptr<FakeWorkerPool> Create() {
return make_scoped_ptr(new FakeWorkerPool);
}
void ScheduleTasks(const base::Closure& callback,
const base::Closure& reply,
const base::Closure& dependency,
int count) {
unsigned priority = 0u;
TaskGraph graph;
scoped_refptr<FakeWorkerPoolTaskImpl> completion_task(
new FakeWorkerPoolTaskImpl(
base::Bind(&FakeWorkerPool::OnTasksCompleted,
base::Unretained(this)),
base::Closure()));
scoped_ptr<GraphNode> completion_node(new GraphNode);
completion_node->set_task(completion_task.get());
scoped_refptr<FakeWorkerPoolTaskImpl> dependency_task(
new FakeWorkerPoolTaskImpl(dependency, base::Closure()));
scoped_ptr<GraphNode> dependency_node(new GraphNode);
dependency_node->set_task(dependency_task.get());
TaskVector tasks;
for (int i = 0; i < count; ++i) {
scoped_refptr<FakeWorkerPoolTaskImpl> task(
new FakeWorkerPoolTaskImpl(callback, reply));
scoped_ptr<GraphNode> node(new GraphNode);
node->set_task(task.get());
node->add_dependent(completion_node.get());
completion_node->add_dependency();
dependency_node->add_dependent(node.get());
node->add_dependency();
node->set_priority(priority++);
graph.set(task.get(), node.Pass());
tasks.push_back(task.get());
}
completion_node->set_priority(priority++);
graph.set(completion_task.get(), completion_node.Pass());
dependency_node->set_priority(priority++);
graph.set(dependency_task.get(), dependency_node.Pass());
scheduled_tasks_completion_.reset(new CompletionEvent);
SetTaskGraph(&graph);
tasks_.swap(tasks);
completion_task_.swap(completion_task);
dependency_task_.swap(dependency_task);
}
void WaitForTasksToComplete() {
DCHECK(scheduled_tasks_completion_);
scheduled_tasks_completion_->Wait();
}
private:
typedef std::vector<scoped_refptr<internal::WorkerPoolTask> > TaskVector;
void OnTasksCompleted() {
DCHECK(scheduled_tasks_completion_);
scheduled_tasks_completion_->Signal();
}
TaskVector tasks_;
scoped_refptr<FakeWorkerPoolTaskImpl> completion_task_;
scoped_refptr<FakeWorkerPoolTaskImpl> dependency_task_;
scoped_ptr<CompletionEvent> scheduled_tasks_completion_;
DISALLOW_COPY_AND_ASSIGN(FakeWorkerPool);
};
class WorkerPoolTest : public testing::Test {
public:
WorkerPoolTest() {}
virtual ~WorkerPoolTest() {}
// Overridden from testing::Test:
virtual void SetUp() OVERRIDE {
Reset();
}
virtual void TearDown() OVERRIDE {
worker_pool_->Shutdown();
}
void Reset() {
worker_pool_ = FakeWorkerPool::Create();
}
void RunAllTasksAndReset() {
worker_pool_->WaitForTasksToComplete();
worker_pool_->Shutdown();
worker_pool_->CheckForCompletedTasks();
Reset();
}
FakeWorkerPool* worker_pool() {
return worker_pool_.get();
}
void RunTask(unsigned id) {
run_task_ids_.push_back(id);
}
void OnTaskCompleted(unsigned id) {
on_task_completed_ids_.push_back(id);
}
const std::vector<unsigned>& run_task_ids() {
return run_task_ids_;
}
const std::vector<unsigned>& on_task_completed_ids() {
return on_task_completed_ids_;
}
private:
scoped_ptr<FakeWorkerPool> worker_pool_;
std::vector<unsigned> run_task_ids_;
std::vector<unsigned> on_task_completed_ids_;
};
TEST_F(WorkerPoolTest, Basic) {
EXPECT_EQ(0u, run_task_ids().size());
EXPECT_EQ(0u, on_task_completed_ids().size());
worker_pool()->ScheduleTasks(
base::Bind(&WorkerPoolTest::RunTask, base::Unretained(this), 0u),
base::Bind(&WorkerPoolTest::OnTaskCompleted, base::Unretained(this), 0u),
base::Closure(),
1);
RunAllTasksAndReset();
EXPECT_EQ(1u, run_task_ids().size());
EXPECT_EQ(1u, on_task_completed_ids().size());
worker_pool()->ScheduleTasks(
base::Bind(&WorkerPoolTest::RunTask, base::Unretained(this), 0u),
base::Bind(&WorkerPoolTest::OnTaskCompleted, base::Unretained(this), 0u),
base::Closure(),
2);
RunAllTasksAndReset();
EXPECT_EQ(3u, run_task_ids().size());
EXPECT_EQ(3u, on_task_completed_ids().size());
}
TEST_F(WorkerPoolTest, Dependencies) {
worker_pool()->ScheduleTasks(
base::Bind(&WorkerPoolTest::RunTask, base::Unretained(this), 1u),
base::Bind(&WorkerPoolTest::OnTaskCompleted, base::Unretained(this), 1u),
base::Bind(&WorkerPoolTest::RunTask, base::Unretained(this), 0u),
1);
RunAllTasksAndReset();
// Check if dependency ran before task.
ASSERT_EQ(2u, run_task_ids().size());
EXPECT_EQ(0u, run_task_ids()[0]);
EXPECT_EQ(1u, run_task_ids()[1]);
ASSERT_EQ(1u, on_task_completed_ids().size());
EXPECT_EQ(1u, on_task_completed_ids()[0]);
worker_pool()->ScheduleTasks(
base::Bind(&WorkerPoolTest::RunTask, base::Unretained(this), 1u),
base::Bind(&WorkerPoolTest::OnTaskCompleted, base::Unretained(this), 1u),
base::Bind(&WorkerPoolTest::RunTask, base::Unretained(this), 0u),
2);
RunAllTasksAndReset();
// Dependency should only run once.
ASSERT_EQ(5u, run_task_ids().size());
EXPECT_EQ(0u, run_task_ids()[2]);
EXPECT_EQ(1u, run_task_ids()[3]);
EXPECT_EQ(1u, run_task_ids()[4]);
ASSERT_EQ(3u, on_task_completed_ids().size());
EXPECT_EQ(1u, on_task_completed_ids()[1]);
EXPECT_EQ(1u, on_task_completed_ids()[2]);
}
} // namespace
} // namespace cc
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