blob: 7451e1d7a421fbdab915429fc15ede77461990eb [file] [log] [blame]
// Copyright 2016 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 "base/sequenced_task_runner.h"
#include "base/bind.h"
#include "base/gtest_prod_util.h"
#include "base/message_loop/message_loop.h"
#include "base/run_loop.h"
#include "base/threading/thread.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace base {
namespace {
class FlagOnDelete {
public:
FlagOnDelete(bool* deleted,
scoped_refptr<SequencedTaskRunner> expected_deletion_sequence)
: deleted_(deleted),
expected_deletion_sequence_(std::move(expected_deletion_sequence)) {}
private:
friend class DeleteHelper<FlagOnDelete>;
FRIEND_TEST_ALL_PREFIXES(SequencedTaskRunnerTest,
OnTaskRunnerDeleterTargetStoppedEarly);
~FlagOnDelete() {
EXPECT_FALSE(*deleted_);
*deleted_ = true;
if (expected_deletion_sequence_)
EXPECT_TRUE(expected_deletion_sequence_->RunsTasksInCurrentSequence());
}
bool* deleted_;
const scoped_refptr<SequencedTaskRunner> expected_deletion_sequence_;
DISALLOW_COPY_AND_ASSIGN(FlagOnDelete);
};
class SequencedTaskRunnerTest : public testing::Test {
protected:
SequencedTaskRunnerTest() : foreign_thread_("foreign") {}
void SetUp() override {
main_runner_ = message_loop_.task_runner();
foreign_thread_.Start();
foreign_runner_ = foreign_thread_.task_runner();
}
scoped_refptr<SequencedTaskRunner> main_runner_;
scoped_refptr<SequencedTaskRunner> foreign_runner_;
Thread foreign_thread_;
private:
MessageLoop message_loop_;
DISALLOW_COPY_AND_ASSIGN(SequencedTaskRunnerTest);
};
using SequenceBoundUniquePtr =
std::unique_ptr<FlagOnDelete, OnTaskRunnerDeleter>;
TEST_F(SequencedTaskRunnerTest, OnTaskRunnerDeleterOnMainThread) {
bool deleted_on_main_thread = false;
SequenceBoundUniquePtr ptr(
new FlagOnDelete(&deleted_on_main_thread, main_runner_),
OnTaskRunnerDeleter(main_runner_));
EXPECT_FALSE(deleted_on_main_thread);
foreign_runner_->PostTask(
FROM_HERE, BindOnce([](SequenceBoundUniquePtr) {}, Passed(&ptr)));
{
RunLoop run_loop;
foreign_runner_->PostTaskAndReply(FROM_HERE, BindOnce([] {}),
run_loop.QuitClosure());
run_loop.Run();
}
EXPECT_TRUE(deleted_on_main_thread);
}
TEST_F(SequencedTaskRunnerTest, OnTaskRunnerDeleterTargetStoppedEarly) {
bool deleted_on_main_thread = false;
FlagOnDelete* raw = new FlagOnDelete(&deleted_on_main_thread, main_runner_);
SequenceBoundUniquePtr ptr(raw, OnTaskRunnerDeleter(foreign_runner_));
EXPECT_FALSE(deleted_on_main_thread);
// Stopping the target ahead of deleting |ptr| should make its
// OnTaskRunnerDeleter no-op.
foreign_thread_.Stop();
ptr = nullptr;
EXPECT_FALSE(deleted_on_main_thread);
delete raw;
EXPECT_TRUE(deleted_on_main_thread);
}
} // namespace
} // namespace base