first commit

2026-02-21 17:11:31 +09:00
commit 18b4338361
4001 changed files with 365464 additions and 0 deletions
--- a/project/fm_viewer/fav/singleton.h
+++ b/project/fm_viewer/fav/singleton.h
@@ -0,0 +1,114 @@
+/******************************************************************************
+    singleton.h: singleton template
+    Copyright (C) 2012-2016 Wang Bin <wbsecg1@gmail.com>
+    
+    This library is free software; you can redistribute it and/or
+    modify it under the terms of the GNU Lesser General Public
+    License as published by the Free Software Foundation; either
+    version 2.1 of the License, or (at your option) any later version.
+
+    This library 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
+    Lesser General Public License for more details.
+
+    You should have received a copy of the GNU Lesser General Public
+    License along with this library; if not, write to the Free Software
+    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+******************************************************************************/
+
+
+#ifndef SINGLETON_H
+#define SINGLETON_H
+
+#include <cstdio>
+#include <cstdlib> //harmattan: atexit
+#include <cassert>
+#define USE_EXCEPTION 0
+#if USE_EXCEPTION
+#include <stdexcept> // std::string breaks abi
+#endif
+
+#ifdef DEBUG
+#define DBG(fmt, ...) \
+    fprintf(stderr, fmt, ##__VA_ARGS__); \
+    fflush(0);
+#else
+#define DBG(...)
+#endif //DEBUG
+
+#define DISABLE_COPY(Class) \
+    Class(const Class &); \
+    Class &operator=(const Class &);
+
+/*
+ * Used in library, can not be used both in library and outside. so we don't need export it
+ */
+
+template <typename T>
+class Singleton
+{
+    DISABLE_COPY(Singleton)
+public:
+    typedef T ObjectType;
+    static T& Instance();
+protected:
+    Singleton() {}
+    virtual ~Singleton() {}
+private:
+    static void MakeInstance();
+    static void  DestroySingleton();
+
+    static T* pInstance_;
+    static bool destroyed_;
+};
+
+/*if it is used as dll, template will instanced in dll and exe
+ *, and pInstance_ are 0 for both*/
+//TODO: use static Singleton<T> inst; return inst;
+template<typename T>
+T* Singleton<T>::pInstance_ = 0; //Why it will be initialized twice? The order?
+template<typename T>
+bool Singleton<T>::destroyed_ = false;
+
+template<typename T>
+T &Singleton<T>::Instance()
+{
+    //DBG("instance = %p\n", pInstance_);
+    if (!pInstance_) {
+        MakeInstance();
+    }
+    return *pInstance_;
+}
+
+
+template<typename T>
+void Singleton<T>::MakeInstance()
+{
+    if (!pInstance_) {
+        if (destroyed_) {
+            destroyed_ = false;
+#if USE_EXCEPTION
+            throw std::logic_error("Dead Reference Detected");
+#else
+            DBG("Dead Reference Detected");
+            exit(1);
+#endif //QT_NO_EXCEPTIONS
+        }
+        pInstance_ = new T();
+        DBG("Singleton %p created...\n", pInstance_);
+        std::atexit(&DestroySingleton);
+    }
+}
+
+template<typename T>
+void Singleton<T>::DestroySingleton()
+{
+    DBG("DestroySingleton...\n");
+    assert(!destroyed_);
+    delete pInstance_;
+    pInstance_ = 0;
+    destroyed_ = true;
+}
+
+#endif // SINGLETON_H