summaryrefslogtreecommitdiff
path: root/src/third_party/boost-1.60.0/boost/interprocess/file_mapping.hpp
diff options
context:
space:
mode:
Diffstat (limited to 'src/third_party/boost-1.60.0/boost/interprocess/file_mapping.hpp')
-rw-r--r--src/third_party/boost-1.60.0/boost/interprocess/file_mapping.hpp199
1 files changed, 199 insertions, 0 deletions
diff --git a/src/third_party/boost-1.60.0/boost/interprocess/file_mapping.hpp b/src/third_party/boost-1.60.0/boost/interprocess/file_mapping.hpp
new file mode 100644
index 00000000000..0d1cf1fe418
--- /dev/null
+++ b/src/third_party/boost-1.60.0/boost/interprocess/file_mapping.hpp
@@ -0,0 +1,199 @@
+//////////////////////////////////////////////////////////////////////////////
+//
+// (C) Copyright Ion Gaztanaga 2005-2012. 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_FILE_MAPPING_HPP
+#define BOOST_INTERPROCESS_FILE_MAPPING_HPP
+
+#ifndef BOOST_CONFIG_HPP
+# include <boost/config.hpp>
+#endif
+#
+#if defined(BOOST_HAS_PRAGMA_ONCE)
+# pragma once
+#endif
+
+#include <boost/interprocess/detail/config_begin.hpp>
+#include <boost/interprocess/detail/workaround.hpp>
+
+#if !defined(BOOST_INTERPROCESS_MAPPED_FILES)
+#error "Boost.Interprocess: This platform does not support memory mapped files!"
+#endif
+
+#include <boost/interprocess/interprocess_fwd.hpp>
+#include <boost/interprocess/exceptions.hpp>
+#include <boost/interprocess/detail/utilities.hpp>
+#include <boost/interprocess/creation_tags.hpp>
+#include <boost/interprocess/detail/os_file_functions.hpp>
+#include <boost/interprocess/detail/simple_swap.hpp>
+#include <boost/move/utility_core.hpp>
+#include <string> //std::string
+
+//!\file
+//!Describes file_mapping and mapped region classes
+
+namespace boost {
+namespace interprocess {
+
+//!A class that wraps a file-mapping that can be used to
+//!create mapped regions from the mapped files
+class file_mapping
+{
+ #if !defined(BOOST_INTERPROCESS_DOXYGEN_INVOKED)
+ BOOST_MOVABLE_BUT_NOT_COPYABLE(file_mapping)
+ #endif //#ifndef BOOST_INTERPROCESS_DOXYGEN_INVOKED
+
+ public:
+ //!Constructs an empty file mapping.
+ //!Does not throw
+ file_mapping();
+
+ //!Opens a file mapping of file "filename", starting in offset
+ //!"file_offset", and the mapping's size will be "size". The mapping
+ //!can be opened for read-only "read_only" or read-write "read_write"
+ //!modes. Throws interprocess_exception on error.
+ file_mapping(const char *filename, mode_t mode);
+
+ //!Moves the ownership of "moved"'s file mapping object to *this.
+ //!After the call, "moved" does not represent any file mapping object.
+ //!Does not throw
+ file_mapping(BOOST_RV_REF(file_mapping) moved)
+ : m_handle(file_handle_t(ipcdetail::invalid_file()))
+ , m_mode(read_only)
+ { this->swap(moved); }
+
+ //!Moves the ownership of "moved"'s file mapping to *this.
+ //!After the call, "moved" does not represent any file mapping.
+ //!Does not throw
+ file_mapping &operator=(BOOST_RV_REF(file_mapping) moved)
+ {
+ file_mapping tmp(boost::move(moved));
+ this->swap(tmp);
+ return *this;
+ }
+
+ //!Swaps to file_mappings.
+ //!Does not throw.
+ void swap(file_mapping &other);
+
+ //!Returns access mode
+ //!used in the constructor
+ mode_t get_mode() const;
+
+ //!Obtains the mapping handle
+ //!to be used with mapped_region
+ mapping_handle_t get_mapping_handle() const;
+
+ //!Destroys the file mapping. All mapped regions created from this are still
+ //!valid. Does not throw
+ ~file_mapping();
+
+ //!Returns the name of the file
+ //!used in the constructor.
+ const char *get_name() const;
+
+ //!Removes the file named "filename" even if it's been memory mapped.
+ //!Returns true on success.
+ //!The function might fail in some operating systems if the file is
+ //!being used other processes and no deletion permission was shared.
+ static bool remove(const char *filename);
+
+ #if !defined(BOOST_INTERPROCESS_DOXYGEN_INVOKED)
+ private:
+ //!Closes a previously opened file mapping. Never throws.
+ void priv_close();
+ file_handle_t m_handle;
+ mode_t m_mode;
+ std::string m_filename;
+ #endif //#ifndef BOOST_INTERPROCESS_DOXYGEN_INVOKED
+};
+
+inline file_mapping::file_mapping()
+ : m_handle(file_handle_t(ipcdetail::invalid_file()))
+ , m_mode(read_only)
+{}
+
+inline file_mapping::~file_mapping()
+{ this->priv_close(); }
+
+inline const char *file_mapping::get_name() const
+{ return m_filename.c_str(); }
+
+inline void file_mapping::swap(file_mapping &other)
+{
+ (simple_swap)(m_handle, other.m_handle);
+ (simple_swap)(m_mode, other.m_mode);
+ m_filename.swap(other.m_filename);
+}
+
+inline mapping_handle_t file_mapping::get_mapping_handle() const
+{ return ipcdetail::mapping_handle_from_file_handle(m_handle); }
+
+inline mode_t file_mapping::get_mode() const
+{ return m_mode; }
+
+inline file_mapping::file_mapping
+ (const char *filename, mode_t mode)
+ : m_filename(filename)
+{
+ //Check accesses
+ if (mode != read_write && mode != read_only){
+ error_info err = other_error;
+ throw interprocess_exception(err);
+ }
+
+ //Open file
+ m_handle = ipcdetail::open_existing_file(filename, mode);
+
+ //Check for error
+ if(m_handle == ipcdetail::invalid_file()){
+ error_info err = system_error_code();
+ this->priv_close();
+ throw interprocess_exception(err);
+ }
+ m_mode = mode;
+}
+
+inline bool file_mapping::remove(const char *filename)
+{ return ipcdetail::delete_file(filename); }
+
+#if !defined(BOOST_INTERPROCESS_DOXYGEN_INVOKED)
+
+inline void file_mapping::priv_close()
+{
+ if(m_handle != ipcdetail::invalid_file()){
+ ipcdetail::close_file(m_handle);
+ m_handle = ipcdetail::invalid_file();
+ }
+}
+
+//!A class that stores the name of a file
+//!and tries to remove it in its destructor
+//!Useful to remove temporary files in the presence
+//!of exceptions
+class remove_file_on_destroy
+{
+ const char * m_name;
+ public:
+ remove_file_on_destroy(const char *name)
+ : m_name(name)
+ {}
+
+ ~remove_file_on_destroy()
+ { ipcdetail::delete_file(m_name); }
+};
+
+#endif //#ifndef BOOST_INTERPROCESS_DOXYGEN_INVOKED
+
+} //namespace interprocess {
+} //namespace boost {
+
+#include <boost/interprocess/detail/config_end.hpp>
+
+#endif //BOOST_INTERPROCESS_FILE_MAPPING_HPP