liuxiaolong
2021-07-20 58d904a328c0d849769b483e901a0be9426b8209
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
#ifndef BOOST_THREAD_ONCE_HPP
#define BOOST_THREAD_ONCE_HPP
 
//  once.hpp
//
//  (C) Copyright 2006-7 Anthony Williams
//
//  Distributed under the Boost Software License, Version 1.0. (See
//  accompanying file LICENSE_1_0.txt or copy at
//  http://www.boost.org/LICENSE_1_0.txt)
 
#include <boost/thread/detail/config.hpp>
 
#ifdef BOOST_MSVC
# pragma warning(push)
# pragma warning(disable: 4702) // unreachable code
#endif
 
#include <boost/thread/detail/platform.hpp>
#if defined(BOOST_THREAD_PLATFORM_WIN32)
#include <boost/thread/win32/once.hpp>
#elif defined(BOOST_THREAD_PLATFORM_PTHREAD)
#if defined BOOST_THREAD_ONCE_FAST_EPOCH
#include <boost/thread/pthread/once.hpp>
#elif defined BOOST_THREAD_ONCE_ATOMIC
#include <boost/thread/pthread/once_atomic.hpp>
#else
#error "Once Not Implemented"
#endif
#else
#error "Boost threads unavailable on this platform"
#endif
 
#include <boost/config/abi_prefix.hpp>
 
namespace boost
{
  // template<class Callable, class ...Args> void
  // call_once(once_flag& flag, Callable&& func, Args&&... args);
template<typename Function>
inline void call_once(Function func,once_flag& flag)
//inline void call_once(void (*func)(),once_flag& flag)
    {
        call_once(flag,func);
    }
}
 
#include <boost/config/abi_suffix.hpp>
 
#ifdef BOOST_MSVC
# pragma warning(pop)
#endif
 
#endif