blob: cd41eb28655fb741f34f9b79b2fc4a4218fdac64 (
plain)
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
55
56
57
58
59
60
61
62
63
64
65
66
67
68
|
//
// detail/gcc_hppa_fenced_block.hpp
// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
//
// Copyright (c) 2003-2016 Christopher M. Kohlhoff (chris at kohlhoff dot com)
//
// 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)
//
#ifndef ASIO_DETAIL_GCC_HPPA_FENCED_BLOCK_HPP
#define ASIO_DETAIL_GCC_HPPA_FENCED_BLOCK_HPP
#if defined(_MSC_VER) && (_MSC_VER >= 1200)
# pragma once
#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
#include "asio/detail/config.hpp"
#if defined(__GNUC__) && (defined(__hppa) || defined(__hppa__))
#include "asio/detail/noncopyable.hpp"
#include "asio/detail/push_options.hpp"
namespace asio {
namespace detail {
class gcc_hppa_fenced_block
: private noncopyable
{
public:
enum half_t { half };
enum full_t { full };
// Constructor for a half fenced block.
explicit gcc_hppa_fenced_block(half_t)
{
}
// Constructor for a full fenced block.
explicit gcc_hppa_fenced_block(full_t)
{
barrier();
}
// Destructor.
~gcc_hppa_fenced_block()
{
barrier();
}
private:
static void barrier()
{
// This is just a placeholder and almost certainly not sufficient.
__asm__ __volatile__ ("" : : : "memory");
}
};
} // namespace detail
} // namespace asio
#include "asio/detail/pop_options.hpp"
#endif // defined(__GNUC__) && (defined(__hppa) || defined(__hppa__))
#endif // ASIO_DETAIL_GCC_HPPA_FENCED_BLOCK_HPP
|