/usr/include/boost/interprocess/managed_xsi_shared_memory.hpp is in libboost1.55-dev 1.55.0+dfsg-3.
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 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 | //////////////////////////////////////////////////////////////////////////////
//
// (C) Copyright Ion Gaztanaga 2008-2012. 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)
//
// See http://www.boost.org/libs/interprocess for documentation.
//
//////////////////////////////////////////////////////////////////////////////
#ifndef BOOST_INTERPROCESS_MANAGED_XSI_SHARED_MEMORY_HPP
#define BOOST_INTERPROCESS_MANAGED_XSI_SHARED_MEMORY_HPP
#if (defined _MSC_VER) && (_MSC_VER >= 1200)
# pragma once
#endif
#include <boost/interprocess/detail/config_begin.hpp>
#include <boost/interprocess/detail/workaround.hpp>
#if !defined(BOOST_INTERPROCESS_XSI_SHARED_MEMORY_OBJECTS)
#error "This header can't be used in operating systems without XSI (System V) shared memory support"
#endif
#include <boost/interprocess/detail/managed_memory_impl.hpp>
#include <boost/interprocess/detail/managed_open_or_create_impl.hpp>
#include <boost/interprocess/detail/xsi_shared_memory_file_wrapper.hpp>
#include <boost/interprocess/creation_tags.hpp>
//These includes needed to fulfill default template parameters of
//predeclarations in interprocess_fwd.hpp
#include <boost/interprocess/mem_algo/rbtree_best_fit.hpp>
#include <boost/interprocess/sync/mutex_family.hpp>
#include <boost/interprocess/indexes/iset_index.hpp>
namespace boost {
namespace interprocess {
namespace ipcdetail {
template<class AllocationAlgorithm>
struct xsishmem_open_or_create
{
typedef ipcdetail::managed_open_or_create_impl //!FileBased, StoreDevice
< xsi_shared_memory_file_wrapper, AllocationAlgorithm::Alignment, false, true> type;
};
} //namespace ipcdetail {
//!A basic X/Open System Interface (XSI) shared memory named object creation class. Initializes the
//!shared memory segment. Inherits all basic functionality from
//!basic_managed_memory_impl<CharType, AllocationAlgorithm, IndexType>
template
<
class CharType,
class AllocationAlgorithm,
template<class IndexConfig> class IndexType
>
class basic_managed_xsi_shared_memory
: public ipcdetail::basic_managed_memory_impl
<CharType, AllocationAlgorithm, IndexType
,ipcdetail::xsishmem_open_or_create<AllocationAlgorithm>::type::ManagedOpenOrCreateUserOffset>
, private ipcdetail::xsishmem_open_or_create<AllocationAlgorithm>::type
{
/// @cond
public:
typedef xsi_shared_memory_file_wrapper device_type;
public:
typedef typename ipcdetail::xsishmem_open_or_create<AllocationAlgorithm>::type base2_t;
typedef ipcdetail::basic_managed_memory_impl
<CharType, AllocationAlgorithm, IndexType,
base2_t::ManagedOpenOrCreateUserOffset> base_t;
typedef ipcdetail::create_open_func<base_t> create_open_func_t;
basic_managed_xsi_shared_memory *get_this_pointer()
{ return this; }
private:
typedef typename base_t::char_ptr_holder_t char_ptr_holder_t;
BOOST_MOVABLE_BUT_NOT_COPYABLE(basic_managed_xsi_shared_memory)
/// @endcond
public: //functions
typedef typename base_t::size_type size_type;
//!Destroys *this and indicates that the calling process is finished using
//!the resource. The destructor function will deallocate
//!any system resources allocated by the system for use by this process for
//!this resource. The resource can still be opened again calling
//!the open constructor overload. To erase the resource from the system
//!use remove().
~basic_managed_xsi_shared_memory()
{}
//!Default constructor. Does nothing.
//!Useful in combination with move semantics
basic_managed_xsi_shared_memory()
{}
//!Creates shared memory and creates and places the segment manager.
//!This can throw.
basic_managed_xsi_shared_memory(create_only_t, const xsi_key &key,
std::size_t size, const void *addr = 0, const permissions& perm = permissions())
: base_t()
, base2_t(create_only, key, size, read_write, addr,
create_open_func_t(get_this_pointer(), ipcdetail::DoCreate), perm)
{}
//!Creates shared memory and creates and places the segment manager if
//!segment was not created. If segment was created it connects to the
//!segment.
//!This can throw.
basic_managed_xsi_shared_memory (open_or_create_t,
const xsi_key &key, std::size_t size,
const void *addr = 0, const permissions& perm = permissions())
: base_t()
, base2_t(open_or_create, key, size, read_write, addr,
create_open_func_t(get_this_pointer(),
ipcdetail::DoOpenOrCreate), perm)
{}
//!Connects to a created shared memory and its segment manager.
//!in read-only mode.
//!This can throw.
basic_managed_xsi_shared_memory (open_read_only_t, const xsi_key &key,
const void *addr = 0)
: base_t()
, base2_t(open_only, key, read_only, addr,
create_open_func_t(get_this_pointer(),
ipcdetail::DoOpen))
{}
//!Connects to a created shared memory and its segment manager.
//!This can throw.
basic_managed_xsi_shared_memory (open_only_t, const xsi_key &key,
const void *addr = 0)
: base_t()
, base2_t(open_only, key, read_write, addr,
create_open_func_t(get_this_pointer(),
ipcdetail::DoOpen))
{}
//!Moves the ownership of "moved"'s managed memory to *this.
//!Does not throw
basic_managed_xsi_shared_memory(BOOST_RV_REF(basic_managed_xsi_shared_memory) moved)
{
basic_managed_xsi_shared_memory tmp;
this->swap(moved);
tmp.swap(moved);
}
//!Moves the ownership of "moved"'s managed memory to *this.
//!Does not throw
basic_managed_xsi_shared_memory &operator=(BOOST_RV_REF(basic_managed_xsi_shared_memory) moved)
{
basic_managed_xsi_shared_memory tmp(boost::move(moved));
this->swap(tmp);
return *this;
}
//!Swaps the ownership of the managed shared memories managed by *this and other.
//!Never throws.
void swap(basic_managed_xsi_shared_memory &other)
{
base_t::swap(other);
base2_t::swap(other);
}
//!Erases a XSI shared memory object identified by shmid
//!from the system.
//!Returns false on error. Never throws
static bool remove(int shmid)
{ return device_type::remove(shmid); }
int get_shmid() const
{ return base2_t::get_device().get_shmid(); }
/// @cond
//!Tries to find a previous named allocation address. Returns a memory
//!buffer and the object count. If not found returned pointer is 0.
//!Never throws.
template <class T>
std::pair<T*, std::size_t> find (char_ptr_holder_t name)
{
if(base2_t::get_mapped_region().get_mode() == read_only){
return base_t::template find_no_lock<T>(name);
}
else{
return base_t::template find<T>(name);
}
}
/// @endcond
};
} //namespace interprocess {
} //namespace boost {
#include <boost/interprocess/detail/config_end.hpp>
#endif //BOOST_INTERPROCESS_MANAGED_XSI_SHARED_MEMORY_HPP
|