This file is indexed.

/usr/include/asio/detail/posix_mutex.hpp is in libasio-dev 1:1.10.8-1.

This file is owned by root:root, with mode 0o644.

The actual contents of the file can be viewed below.

 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
69
70
71
72
73
74
75
76
//
// detail/posix_mutex.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_POSIX_MUTEX_HPP
#define ASIO_DETAIL_POSIX_MUTEX_HPP

#if defined(_MSC_VER) && (_MSC_VER >= 1200)
# pragma once
#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)

#include "asio/detail/config.hpp"

#if defined(ASIO_HAS_PTHREADS)

#include <pthread.h>
#include "asio/detail/noncopyable.hpp"
#include "asio/detail/scoped_lock.hpp"

#include "asio/detail/push_options.hpp"

namespace asio {
namespace detail {

class posix_event;

class posix_mutex
  : private noncopyable
{
public:
  typedef asio::detail::scoped_lock<posix_mutex> scoped_lock;

  // Constructor.
  ASIO_DECL posix_mutex();

  // Destructor.
  ~posix_mutex()
  {
    ::pthread_mutex_destroy(&mutex_); // Ignore EBUSY.
  }

  // Lock the mutex.
  void lock()
  {
    (void)::pthread_mutex_lock(&mutex_); // Ignore EINVAL.
  }

  // Unlock the mutex.
  void unlock()
  {
    (void)::pthread_mutex_unlock(&mutex_); // Ignore EINVAL.
  }

private:
  friend class posix_event;
  ::pthread_mutex_t mutex_;
};

} // namespace detail
} // namespace asio

#include "asio/detail/pop_options.hpp"

#if defined(ASIO_HEADER_ONLY)
# include "asio/detail/impl/posix_mutex.ipp"
#endif // defined(ASIO_HEADER_ONLY)

#endif // defined(ASIO_HAS_PTHREADS)

#endif // ASIO_DETAIL_POSIX_MUTEX_HPP