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// Copyright 2012 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/message_loop/message_pump_io_ios.h"
#include <unistd.h>
#include "base/message_loop/message_loop.h"
#include "base/posix/eintr_wrapper.h"
#include "base/threading/thread.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace base {
class MessagePumpIOSForIOTest : public testing::Test {
protected:
MessagePumpIOSForIOTest()
: ui_loop_(MessageLoop::TYPE_UI),
io_thread_("MessagePumpIOSForIOTestIOThread") {}
virtual ~MessagePumpIOSForIOTest() {}
virtual void SetUp() OVERRIDE {
Thread::Options options(MessageLoop::TYPE_IO, 0);
ASSERT_TRUE(io_thread_.StartWithOptions(options));
ASSERT_EQ(MessageLoop::TYPE_IO, io_thread_.message_loop()->type());
int ret = pipe(pipefds_);
ASSERT_EQ(0, ret);
ret = pipe(alternate_pipefds_);
ASSERT_EQ(0, ret);
}
virtual void TearDown() OVERRIDE {
if (IGNORE_EINTR(close(pipefds_[0])) < 0)
PLOG(ERROR) << "close";
if (IGNORE_EINTR(close(pipefds_[1])) < 0)
PLOG(ERROR) << "close";
}
MessageLoop* ui_loop() { return &ui_loop_; }
MessageLoopForIO* io_loop() const {
return static_cast<MessageLoopForIO*>(io_thread_.message_loop());
}
void HandleFdIOEvent(MessageLoopForIO::FileDescriptorWatcher* watcher) {
MessagePumpIOSForIO::HandleFdIOEvent(watcher->fdref_,
kCFFileDescriptorReadCallBack | kCFFileDescriptorWriteCallBack,
watcher);
}
int pipefds_[2];
int alternate_pipefds_[2];
private:
MessageLoop ui_loop_;
Thread io_thread_;
DISALLOW_COPY_AND_ASSIGN(MessagePumpIOSForIOTest);
};
namespace {
// Concrete implementation of MessagePumpIOSForIO::Watcher that does
// nothing useful.
class StupidWatcher : public MessagePumpIOSForIO::Watcher {
public:
virtual ~StupidWatcher() {}
// base:MessagePumpIOSForIO::Watcher interface
virtual void OnFileCanReadWithoutBlocking(int fd) OVERRIDE {}
virtual void OnFileCanWriteWithoutBlocking(int fd) OVERRIDE {}
};
#if GTEST_HAS_DEATH_TEST && !defined(NDEBUG)
// Test to make sure that we catch calling WatchFileDescriptor off of the
// wrong thread.
TEST_F(MessagePumpIOSForIOTest, TestWatchingFromBadThread) {
MessagePumpIOSForIO::FileDescriptorWatcher watcher;
StupidWatcher delegate;
ASSERT_DEBUG_DEATH(io_loop()->WatchFileDescriptor(
STDOUT_FILENO, false, MessageLoopForIO::WATCH_READ, &watcher, &delegate),
"Check failed: "
"watch_file_descriptor_caller_checker_.CalledOnValidThread\\(\\)");
}
#endif // GTEST_HAS_DEATH_TEST && !defined(NDEBUG)
class BaseWatcher : public MessagePumpIOSForIO::Watcher {
public:
BaseWatcher(MessagePumpIOSForIO::FileDescriptorWatcher* controller)
: controller_(controller) {
DCHECK(controller_);
}
virtual ~BaseWatcher() {}
// MessagePumpIOSForIO::Watcher interface
virtual void OnFileCanReadWithoutBlocking(int /* fd */) OVERRIDE {
NOTREACHED();
}
virtual void OnFileCanWriteWithoutBlocking(int /* fd */) OVERRIDE {
NOTREACHED();
}
protected:
MessagePumpIOSForIO::FileDescriptorWatcher* controller_;
};
class DeleteWatcher : public BaseWatcher {
public:
explicit DeleteWatcher(
MessagePumpIOSForIO::FileDescriptorWatcher* controller)
: BaseWatcher(controller) {}
virtual ~DeleteWatcher() {
DCHECK(!controller_);
}
virtual void OnFileCanWriteWithoutBlocking(int /* fd */) OVERRIDE {
DCHECK(controller_);
delete controller_;
controller_ = NULL;
}
};
TEST_F(MessagePumpIOSForIOTest, DeleteWatcher) {
scoped_ptr<MessagePumpIOSForIO> pump(new MessagePumpIOSForIO);
MessagePumpIOSForIO::FileDescriptorWatcher* watcher =
new MessagePumpIOSForIO::FileDescriptorWatcher;
DeleteWatcher delegate(watcher);
pump->WatchFileDescriptor(pipefds_[1],
false, MessagePumpIOSForIO::WATCH_READ_WRITE, watcher, &delegate);
// Spoof a callback.
HandleFdIOEvent(watcher);
}
class StopWatcher : public BaseWatcher {
public:
StopWatcher(MessagePumpIOSForIO::FileDescriptorWatcher* controller,
MessagePumpIOSForIO* pump,
int fd_to_start_watching = -1)
: BaseWatcher(controller),
pump_(pump),
fd_to_start_watching_(fd_to_start_watching) {}
virtual ~StopWatcher() {}
virtual void OnFileCanWriteWithoutBlocking(int /* fd */) OVERRIDE {
controller_->StopWatchingFileDescriptor();
if (fd_to_start_watching_ >= 0) {
pump_->WatchFileDescriptor(fd_to_start_watching_,
false, MessagePumpIOSForIO::WATCH_READ_WRITE, controller_, this);
}
}
private:
MessagePumpIOSForIO* pump_;
int fd_to_start_watching_;
};
TEST_F(MessagePumpIOSForIOTest, StopWatcher) {
scoped_ptr<MessagePumpIOSForIO> pump(new MessagePumpIOSForIO);
MessagePumpIOSForIO::FileDescriptorWatcher watcher;
StopWatcher delegate(&watcher, pump.get());
pump->WatchFileDescriptor(pipefds_[1],
false, MessagePumpIOSForIO::WATCH_READ_WRITE, &watcher, &delegate);
// Spoof a callback.
HandleFdIOEvent(&watcher);
}
TEST_F(MessagePumpIOSForIOTest, StopWatcherAndWatchSomethingElse) {
scoped_ptr<MessagePumpIOSForIO> pump(new MessagePumpIOSForIO);
MessagePumpIOSForIO::FileDescriptorWatcher watcher;
StopWatcher delegate(&watcher, pump.get(), alternate_pipefds_[1]);
pump->WatchFileDescriptor(pipefds_[1],
false, MessagePumpIOSForIO::WATCH_READ_WRITE, &watcher, &delegate);
// Spoof a callback.
HandleFdIOEvent(&watcher);
}
} // namespace
} // namespace base
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