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/*
* Copyright (C) 2015 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <brillo/binder_watcher.h>
#include <base/logging.h>
#include <binder/IPCThreadState.h>
#include <binder/ProcessState.h>
using android::IPCThreadState;
using android::ProcessState;
namespace brillo {
BinderWatcher::BinderWatcher() = default;
BinderWatcher::~BinderWatcher() = default;
bool BinderWatcher::Init() {
int binder_fd = -1;
ProcessState::self()->setThreadPoolMaxThreadCount(0);
IPCThreadState::self()->disableBackgroundScheduling(true);
IPCThreadState::self()->setupPolling(&binder_fd);
LOG(INFO) << "Got binder FD " << binder_fd;
if (binder_fd < 0)
return false;
if (!base::MessageLoopForIO::current()->WatchFileDescriptor(
binder_fd, true /* persistent */, base::MessageLoopForIO::WATCH_READ,
&watcher_, this)) {
LOG(ERROR) << "Failed to watch binder FD";
return false;
}
return true;
}
void BinderWatcher::OnFileCanReadWithoutBlocking(int /* fd */) {
IPCThreadState::self()->handlePolledCommands();
}
void BinderWatcher::OnFileCanWriteWithoutBlocking(int fd) {
NOTREACHED() << "Unexpected writable notification for FD " << fd;
}
} // namespace brillo
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