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#ifndef BASE_SINGLETON_DLL_UNITTEST_H__
#define BASE_SINGLETON_DLL_UNITTEST_H__

#include "base/singleton.h"

#ifdef SINGLETON_UNITTEST_EXPORTS
#define SINGLETON_UNITTEST_API __declspec(dllexport)
#else
#define SINGLETON_UNITTEST_API __declspec(dllimport)
#endif

// Function pointer for singleton getters.
typedef int* (WINAPI* SingletonIntFunc)();

// Callback function to be called on library unload.
typedef void (WINAPI* CallBackFunc)();

// Leaky/nonleak singleton initialization.
typedef void (WINAPI* LeakySingletonFunc)(CallBackFunc);

// Retrieve the leaky singleton for later disposal.
typedef CallBackFunc* (WINAPI* GetLeakySingletonFunc)();

// When using new/delete, the heap is destroyed on library unload. So use
// VirtualAlloc/VirtualFree to bypass this behavior.
template<typename Type>
struct CustomAllocTrait : public DefaultSingletonTraits<Type> {
  static Type* New() {
    return static_cast<Type*>(VirtualAlloc(NULL, sizeof(Type), MEM_COMMIT,
                                           PAGE_READWRITE));
  }

  static bool Delete(Type* p) {
    return 0!=VirtualFree(p, 0, MEM_RELEASE);
  }
};

// 1 and 2 share the same instance.
// 3 simply use a different key.
// 4 sets kMustCallNewExactlyOnce to true.
// 5 default initialize to 5.
extern "C" SINGLETON_UNITTEST_API int* WINAPI SingletonInt1();
extern "C" SINGLETON_UNITTEST_API int* WINAPI SingletonInt2();
extern "C" SINGLETON_UNITTEST_API int* WINAPI SingletonInt3();
extern "C" SINGLETON_UNITTEST_API int* WINAPI SingletonInt4();
extern "C" SINGLETON_UNITTEST_API int* WINAPI SingletonInt5();

extern "C" SINGLETON_UNITTEST_API void WINAPI SingletonNoLeak(
    CallBackFunc CallOnQuit);
extern "C" SINGLETON_UNITTEST_API void WINAPI SingletonLeak(
    CallBackFunc CallOnQuit);
extern "C" SINGLETON_UNITTEST_API CallBackFunc* WINAPI GetLeakySingleton();

#endif  // BASE_SINGLETON_DLL_UNITTEST_H__