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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:
struct Task {
Task(const base::Closure& callback,
const base::Closure& reply,
const base::Closure& dependent,
unsigned dependent_count,
unsigned priority) : callback(callback),
reply(reply),
dependent(dependent),
dependent_count(dependent_count),
priority(priority) {
}
base::Closure callback;
base::Closure reply;
base::Closure dependent;
unsigned dependent_count;
unsigned priority;
};
FakeWorkerPool() : WorkerPool(1, "test") {}
virtual ~FakeWorkerPool() {}
static scoped_ptr<FakeWorkerPool> Create() {
return make_scoped_ptr(new FakeWorkerPool);
}
void ScheduleTasks(const std::vector<Task>& tasks) {
TaskVector new_tasks;
TaskVector new_dependents;
TaskGraph new_graph;
scoped_refptr<FakeWorkerPoolTaskImpl> new_completion_task(
new FakeWorkerPoolTaskImpl(
base::Bind(&FakeWorkerPool::OnTasksCompleted,
base::Unretained(this)),
base::Closure()));
scoped_ptr<internal::GraphNode> completion_node(
new internal::GraphNode(new_completion_task.get(), 0u));
for (std::vector<Task>::const_iterator it = tasks.begin();
it != tasks.end(); ++it) {
scoped_refptr<FakeWorkerPoolTaskImpl> new_task(
new FakeWorkerPoolTaskImpl(it->callback, it->reply));
scoped_ptr<internal::GraphNode> node(
new internal::GraphNode(new_task.get(), it->priority));
DCHECK(it->dependent_count);
for (unsigned i = 0; i < it->dependent_count; ++i) {
scoped_refptr<FakeWorkerPoolTaskImpl> new_dependent_task(
new FakeWorkerPoolTaskImpl(it->dependent, base::Closure()));
scoped_ptr<internal::GraphNode> dependent_node(
new internal::GraphNode(new_dependent_task.get(), it->priority));
dependent_node->add_dependent(completion_node.get());
completion_node->add_dependency();
node->add_dependent(dependent_node.get());
dependent_node->add_dependency();
new_graph.set(new_dependent_task.get(), dependent_node.Pass());
new_dependents.push_back(new_dependent_task.get());
}
new_graph.set(new_task.get(), node.Pass());
new_tasks.push_back(new_task.get());
}
new_graph.set(new_completion_task.get(), completion_node.Pass());
scheduled_tasks_completion_.reset(new CompletionEvent);
SetTaskGraph(&new_graph);
dependents_.swap(new_dependents);
completion_task_.swap(new_completion_task);
tasks_.swap(new_tasks);
}
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_;
TaskVector dependents_;
scoped_refptr<FakeWorkerPoolTaskImpl> completion_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 {
worker_pool_ = FakeWorkerPool::Create();
}
virtual void TearDown() OVERRIDE {
worker_pool_->Shutdown();
worker_pool_->CheckForCompletedTasks();
}
void ResetIds() {
run_task_ids_.clear();
on_task_completed_ids_.clear();
}
void RunAllTasks() {
worker_pool_->WaitForTasksToComplete();
worker_pool_->CheckForCompletedTasks();
}
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(
std::vector<FakeWorkerPool::Task>(
1,
FakeWorkerPool::Task(base::Bind(&WorkerPoolTest::RunTask,
base::Unretained(this),
0u),
base::Bind(&WorkerPoolTest::OnTaskCompleted,
base::Unretained(this),
0u),
base::Closure(),
1u,
0u)));
RunAllTasks();
EXPECT_EQ(1u, run_task_ids().size());
EXPECT_EQ(1u, on_task_completed_ids().size());
worker_pool()->ScheduleTasks(
std::vector<FakeWorkerPool::Task>(
1,
FakeWorkerPool::Task(base::Bind(&WorkerPoolTest::RunTask,
base::Unretained(this),
0u),
base::Bind(&WorkerPoolTest::OnTaskCompleted,
base::Unretained(this),
0u),
base::Bind(&WorkerPoolTest::RunTask,
base::Unretained(this),
0u),
1u,
0u)));
RunAllTasks();
EXPECT_EQ(3u, run_task_ids().size());
EXPECT_EQ(2u, on_task_completed_ids().size());
worker_pool()->ScheduleTasks(
std::vector<FakeWorkerPool::Task>(
1, FakeWorkerPool::Task(base::Bind(&WorkerPoolTest::RunTask,
base::Unretained(this),
0u),
base::Bind(&WorkerPoolTest::OnTaskCompleted,
base::Unretained(this),
0u),
base::Bind(&WorkerPoolTest::RunTask,
base::Unretained(this),
0u),
2u,
0u)));
RunAllTasks();
EXPECT_EQ(6u, run_task_ids().size());
EXPECT_EQ(3u, on_task_completed_ids().size());
}
TEST_F(WorkerPoolTest, Dependencies) {
worker_pool()->ScheduleTasks(
std::vector<FakeWorkerPool::Task>(
1, FakeWorkerPool::Task(base::Bind(&WorkerPoolTest::RunTask,
base::Unretained(this),
0u),
base::Bind(&WorkerPoolTest::OnTaskCompleted,
base::Unretained(this),
0u),
base::Bind(&WorkerPoolTest::RunTask,
base::Unretained(this),
1u),
1u,
0u)));
RunAllTasks();
// Check if task ran before dependent.
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(0u, on_task_completed_ids()[0]);
worker_pool()->ScheduleTasks(
std::vector<FakeWorkerPool::Task>(
1, FakeWorkerPool::Task(base::Bind(&WorkerPoolTest::RunTask,
base::Unretained(this),
2u),
base::Bind(&WorkerPoolTest::OnTaskCompleted,
base::Unretained(this),
2u),
base::Bind(&WorkerPoolTest::RunTask,
base::Unretained(this),
3u),
2u,
0u)));
RunAllTasks();
// Task should only run once.
ASSERT_EQ(5u, run_task_ids().size());
EXPECT_EQ(2u, run_task_ids()[2]);
EXPECT_EQ(3u, run_task_ids()[3]);
EXPECT_EQ(3u, run_task_ids()[4]);
ASSERT_EQ(2u, on_task_completed_ids().size());
EXPECT_EQ(2u, on_task_completed_ids()[1]);
}
TEST_F(WorkerPoolTest, Priority) {
{
FakeWorkerPool::Task tasks[] = {
FakeWorkerPool::Task(base::Bind(&WorkerPoolTest::RunTask,
base::Unretained(this),
0u),
base::Bind(&WorkerPoolTest::OnTaskCompleted,
base::Unretained(this),
0u),
base::Bind(&WorkerPoolTest::RunTask,
base::Unretained(this),
2u),
1u,
1u), // Priority 1
FakeWorkerPool::Task(base::Bind(&WorkerPoolTest::RunTask,
base::Unretained(this),
1u),
base::Bind(&WorkerPoolTest::OnTaskCompleted,
base::Unretained(this),
1u),
base::Bind(&WorkerPoolTest::RunTask,
base::Unretained(this),
3u),
1u,
0u) // Priority 0
};
worker_pool()->ScheduleTasks(
std::vector<FakeWorkerPool::Task>(tasks, tasks + arraysize(tasks)));
}
RunAllTasks();
// Check if tasks ran in order of priority.
ASSERT_EQ(4u, run_task_ids().size());
EXPECT_EQ(1u, run_task_ids()[0]);
EXPECT_EQ(3u, run_task_ids()[1]);
EXPECT_EQ(0u, run_task_ids()[2]);
EXPECT_EQ(2u, run_task_ids()[3]);
ASSERT_EQ(2u, on_task_completed_ids().size());
EXPECT_EQ(1u, on_task_completed_ids()[0]);
EXPECT_EQ(0u, on_task_completed_ids()[1]);
ResetIds();
{
std::vector<FakeWorkerPool::Task> tasks;
tasks.push_back(
FakeWorkerPool::Task(base::Bind(&WorkerPoolTest::RunTask,
base::Unretained(this),
0u),
base::Bind(&WorkerPoolTest::OnTaskCompleted,
base::Unretained(this),
0u),
base::Bind(&WorkerPoolTest::RunTask,
base::Unretained(this),
3u),
1u, // 1 dependent
1u)); // Priority 1
tasks.push_back(
FakeWorkerPool::Task(base::Bind(&WorkerPoolTest::RunTask,
base::Unretained(this),
1u),
base::Bind(&WorkerPoolTest::OnTaskCompleted,
base::Unretained(this),
1u),
base::Bind(&WorkerPoolTest::RunTask,
base::Unretained(this),
4u),
2u, // 2 dependents
1u)); // Priority 1
tasks.push_back(
FakeWorkerPool::Task(base::Bind(&WorkerPoolTest::RunTask,
base::Unretained(this),
2u),
base::Bind(&WorkerPoolTest::OnTaskCompleted,
base::Unretained(this),
2u),
base::Bind(&WorkerPoolTest::RunTask,
base::Unretained(this),
5u),
1u, // 1 dependent
0u)); // Priority 0
worker_pool()->ScheduleTasks(tasks);
}
RunAllTasks();
// Check if tasks ran in order of priority and that task with more
// dependents ran first when priority is the same.
ASSERT_LE(3u, run_task_ids().size());
EXPECT_EQ(2u, run_task_ids()[0]);
EXPECT_EQ(5u, run_task_ids()[1]);
EXPECT_EQ(1u, run_task_ids()[2]);
ASSERT_EQ(3u, on_task_completed_ids().size());
EXPECT_EQ(2u, on_task_completed_ids()[0]);
EXPECT_EQ(1u, on_task_completed_ids()[1]);
EXPECT_EQ(0u, on_task_completed_ids()[2]);
}
} // namespace
} // namespace cc
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