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Diffstat (limited to 'src/mongo/util/concurrency/threadlocal.h')
| -rw-r--r-- | src/mongo/util/concurrency/threadlocal.h | 138 |
1 files changed, 0 insertions, 138 deletions
diff --git a/src/mongo/util/concurrency/threadlocal.h b/src/mongo/util/concurrency/threadlocal.h deleted file mode 100644 index d6190bffb0f..00000000000 --- a/src/mongo/util/concurrency/threadlocal.h +++ /dev/null @@ -1,138 +0,0 @@ -#pragma once - -/** -* Copyright (C) 2011 10gen Inc. -* -* This program is free software: you can redistribute it and/or modify -* it under the terms of the GNU Affero General Public License, version 3, -* as published by the Free Software Foundation. -* -* This program is distributed in the hope that it will be useful, -* but WITHOUT ANY WARRANTY; without even the implied warranty of -* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -* GNU Affero General Public License for more details. -* -* You should have received a copy of the GNU Affero General Public License -* along with this program. If not, see <http://www.gnu.org/licenses/>. -* -* As a special exception, the copyright holders give permission to link the -* code of portions of this program with the OpenSSL library under certain -* conditions as described in each individual source file and distribute -* linked combinations including the program with the OpenSSL library. You -* must comply with the GNU Affero General Public License in all respects -* for all of the code used other than as permitted herein. If you modify -* file(s) with this exception, you may extend this exception to your -* version of the file(s), but you are not obligated to do so. If you do not -* wish to do so, delete this exception statement from your version. If you -* delete this exception statement from all source files in the program, -* then also delete it in the license file. -*/ - -#include <boost/thread/tss.hpp> - -#include "mongo/config.h" - -#include "mongo/base/disallow_copying.h" - -#if defined(MONGO_CONFIG_HAVE_THREAD_LOCAL) -#define MONGO_TRIVIALLY_CONSTRUCTIBLE_THREAD_LOCAL thread_local -#elif defined(MONGO_CONFIG_HAVE___THREAD) -#define MONGO_TRIVIALLY_CONSTRUCTIBLE_THREAD_LOCAL __thread -#elif defined(MONGO_CONFIG_HAVE___DECLSPEC_THREAD) -#define MONGO_TRIVIALLY_CONSTRUCTIBLE_THREAD_LOCAL __declspec(thread) -#else -#error "Compiler must support trivially constructible thread local variables" -#endif - -namespace mongo { - -using boost::thread_specific_ptr; - -/** - * DEPRECATED, DO NOT USE. - * - * thread local "value" rather than a pointer - * good for things which have copy constructors (and the copy constructor is fast enough) - * e.g. - * ThreadLocalValue<int> myint; - */ -template <class T> -class ThreadLocalValue { -public: - ThreadLocalValue(T def = 0) : _default(def) {} - - T get() const { - T* val = _val.get(); - if (val) - return *val; - return _default; - } - - void set(const T& i) { - T* v = _val.get(); - if (v) { - *v = i; - return; - } - v = new T(i); - _val.reset(v); - } - - T& getRef() { - T* v = _val.get(); - if (v) { - return *v; - } - v = new T(_default); - _val.reset(v); - return *v; - } - -private: - boost::thread_specific_ptr<T> _val; - const T _default; -}; - -/** - * Emulation of a thread local storage specifier used because not all supported - * compiler toolchains support the C++11 thread_local storage class keyword. - * - * Since all supported toolchains do support a thread local storage class for - * types that are trivially constructible and destructible, we perform the - * emulation using that storage type and the machinery of boost::thread_specific_ptr to - * handle deleting the objects on thread termination. - */ -template <class T> -class TSP { - MONGO_DISALLOW_COPYING(TSP); - -public: - TSP() = default; - T* get() const; - void reset(T* v); - T* getMake() { - T* t = get(); - if (t == nullptr) - reset(t = new T()); - return t; - } - -private: - boost::thread_specific_ptr<T> tsp; -}; - -#define TSP_DECLARE(T, p) extern TSP<T> p; - -#define TSP_DEFINE(T, p) \ - MONGO_TRIVIALLY_CONSTRUCTIBLE_THREAD_LOCAL T* _##p; \ - TSP<T> p; \ - template <> \ - T* TSP<T>::get() const { \ - return _##p; \ - } \ - template <> \ - void TSP<T>::reset(T* v) { \ - tsp.reset(v); \ - _##p = v; \ - } -} // namespace mongo |