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Contents
// Copyright (C) 2013 The Libphonenumber Authors
//
// 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 I18N_PHONENUMBERS_BASE_MEMORY_SINGLETON_POSIX_H_
#define I18N_PHONENUMBERS_BASE_MEMORY_SINGLETON_POSIX_H_
#include <pthread.h>
#include "phonenumbers/base/logging.h"
namespace i18n {
namespace phonenumbers {
template <class T>
class Singleton {
public:
virtual ~Singleton() {}
static T* GetInstance() {
const int ret = pthread_once(&once_control_, &Init);
(void) ret;
DCHECK_EQ(0, ret);
return instance_;
}
private:
static void Init() {
instance_ = new T();
}
static T* instance_; // Leaky singleton.
static pthread_once_t once_control_;
};
template <class T> T* Singleton<T>::instance_;
template <class T> pthread_once_t Singleton<T>::once_control_ =
PTHREAD_ONCE_INIT;
} // namespace phonenumbers
} // namespace i18n
#endif // I18N_PHONENUMBERS_BASE_MEMORY_SINGLETON_POSIX_H_
Version data entries
22 entries across 22 versions & 1 rubygems