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/*
* Copyright (C) 2017 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.
*/
#ifndef NETDUTILS_THREADUTIL_H
#define NETDUTILS_THREADUTIL_H
#include <pthread.h>
#include <memory>
#include <android-base/logging.h>
namespace android {
namespace netdutils {
struct scoped_pthread_attr {
scoped_pthread_attr() { pthread_attr_init(&attr); }
~scoped_pthread_attr() { pthread_attr_destroy(&attr); }
int detach() { return -pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED); }
pthread_attr_t attr;
};
inline void setThreadName(std::string name) {
// MAX_TASK_COMM_LEN=16 is not exported by bionic.
const size_t MAX_TASK_COMM_LEN = 16;
// Crop name to 16 bytes including the NUL byte, as required by pthread_setname_np()
if (name.size() >= MAX_TASK_COMM_LEN) name.resize(MAX_TASK_COMM_LEN - 1);
if (int ret = pthread_setname_np(pthread_self(), name.c_str()); ret != 0) {
LOG(WARNING) << "Unable to set thread name to " << name << ": " << strerror(ret);
}
}
template <typename T>
inline void* runAndDelete(void* obj) {
std::unique_ptr<T> handler(reinterpret_cast<T*>(obj));
setThreadName(handler->threadName().c_str());
handler->run();
return nullptr;
}
template <typename T>
inline int threadLaunch(T* obj) {
if (obj == nullptr) {
return -EINVAL;
}
scoped_pthread_attr scoped_attr;
int rval = scoped_attr.detach();
if (rval != 0) {
return rval;
}
pthread_t thread;
rval = pthread_create(&thread, &scoped_attr.attr, &runAndDelete<T>, obj);
if (rval != 0) {
LOG(WARNING) << __func__ << ": pthread_create failed: " << rval;
return -rval;
}
return rval;
}
} // namespace netdutils
} // namespace android
#endif // NETDUTILS_THREADUTIL_H
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