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// 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/task_scheduler/task_tracker_posix.h"
#include <unistd.h>
#include <utility>
#include "base/bind.h"
#include "base/bind_helpers.h"
#include "base/files/file_descriptor_watcher_posix.h"
#include "base/macros.h"
#include "base/memory/ptr_util.h"
#include "base/memory/ref_counted.h"
#include "base/message_loop/message_loop.h"
#include "base/posix/eintr_wrapper.h"
#include "base/run_loop.h"
#include "base/sequence_token.h"
#include "base/task_scheduler/task.h"
#include "base/task_scheduler/task_traits.h"
#include "base/task_scheduler/test_utils.h"
#include "base/test/null_task_runner.h"
#include "base/threading/thread.h"
#include "base/time/time.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace base {
namespace internal {
namespace {
class TaskSchedulerTaskTrackerPosixTest : public testing::Test {
public:
TaskSchedulerTaskTrackerPosixTest() : service_thread_("ServiceThread") {
Thread::Options service_thread_options;
service_thread_options.message_loop_type = MessageLoop::TYPE_IO;
service_thread_.StartWithOptions(service_thread_options);
tracker_.set_watch_file_descriptor_message_loop(
static_cast<MessageLoopForIO*>(service_thread_.message_loop()));
}
protected:
Thread service_thread_;
TaskTrackerPosix tracker_ = {"Test"};
private:
DISALLOW_COPY_AND_ASSIGN(TaskSchedulerTaskTrackerPosixTest);
};
} // namespace
// Verify that TaskTrackerPosix runs a Task it receives.
TEST_F(TaskSchedulerTaskTrackerPosixTest, RunTask) {
bool did_run = false;
Task task(FROM_HERE,
Bind([](bool* did_run) { *did_run = true; }, Unretained(&did_run)),
TaskTraits(), TimeDelta());
EXPECT_TRUE(tracker_.WillPostTask(&task));
auto sequence = test::CreateSequenceWithTask(std::move(task));
EXPECT_EQ(sequence, tracker_.WillScheduleSequence(sequence, nullptr));
// Expect RunAndPopNextTask to return nullptr since |sequence| is empty after
// popping a task from it.
EXPECT_FALSE(tracker_.RunAndPopNextTask(sequence, nullptr));
EXPECT_TRUE(did_run);
}
// Verify that FileDescriptorWatcher::WatchReadable() can be called from a task
// running in TaskTrackerPosix without a crash.
TEST_F(TaskSchedulerTaskTrackerPosixTest, FileDescriptorWatcher) {
int fds[2];
ASSERT_EQ(0, pipe(fds));
Task task(FROM_HERE,
Bind(IgnoreResult(&FileDescriptorWatcher::WatchReadable), fds[0],
DoNothing()),
TaskTraits(), TimeDelta());
// FileDescriptorWatcher::WatchReadable needs a SequencedTaskRunnerHandle.
task.sequenced_task_runner_ref = MakeRefCounted<NullTaskRunner>();
EXPECT_TRUE(tracker_.WillPostTask(&task));
auto sequence = test::CreateSequenceWithTask(std::move(task));
EXPECT_EQ(sequence, tracker_.WillScheduleSequence(sequence, nullptr));
// Expect RunAndPopNextTask to return nullptr since |sequence| is empty after
// popping a task from it.
EXPECT_FALSE(tracker_.RunAndPopNextTask(sequence, nullptr));
// Join the service thread to make sure that the read watch is registered and
// unregistered before file descriptors are closed.
service_thread_.Stop();
EXPECT_EQ(0, IGNORE_EINTR(close(fds[0])));
EXPECT_EQ(0, IGNORE_EINTR(close(fds[1])));
}
} // namespace internal
} // namespace base
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