// xcall_once.h internal header
#pragma once
#ifndef _XCALL_ONCE_H
#define _XCALL_ONCE_H
#ifndef RC_INVOKED

#include <yvals.h>

 #pragma pack(push,_CRT_PACKING)
 #pragma warning(push,_STL_WARNING_LEVEL)
 #pragma warning(disable: _STL_DISABLED_WARNINGS)
 _STL_DISABLE_CLANG_WARNINGS
 #pragma push_macro("new")
 #undef new

_STD_BEGIN
		// STRUCT once_flag
struct once_flag
	{	// opaque data structure for call_once()
	constexpr once_flag() noexcept
		: _Opaque(nullptr)
		{	// default construct
		}

	once_flag(const once_flag&) = delete;
	once_flag& operator=(const once_flag&) = delete;

	void *_Opaque;
	};

typedef int (__stdcall *_Execute_once_fp_t)(void *, void *, void **);
_CRTIMP2_PURE int __CLRCALL_PURE_OR_CDECL _Execute_once(
	once_flag& _Flag, _Execute_once_fp_t _Callback, void *_Pv) noexcept;

_STD_END

 #pragma pop_macro("new")
 _STL_RESTORE_CLANG_WARNINGS
 #pragma warning(pop)
 #pragma pack(pop)
#endif /* RC_INVOKED */
#endif /* _XCALL_ONCE_H */

/*
 * Copyright (c) by P.J. Plauger. All rights reserved.
 * Consult your license regarding permissions and restrictions.
V6.50:0009 */