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Diffstat (limited to 'boost/interprocess/sync/xsi/xsi_named_mutex.hpp')
-rw-r--r-- | boost/interprocess/sync/xsi/xsi_named_mutex.hpp | 238 |
1 files changed, 0 insertions, 238 deletions
diff --git a/boost/interprocess/sync/xsi/xsi_named_mutex.hpp b/boost/interprocess/sync/xsi/xsi_named_mutex.hpp deleted file mode 100644 index 7d8cf50a83..0000000000 --- a/boost/interprocess/sync/xsi/xsi_named_mutex.hpp +++ /dev/null @@ -1,238 +0,0 @@ -////////////////////////////////////////////////////////////////////////////// -// -// (C) Copyright Ion Gaztanaga 2009-2012. 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_XSI_XSI_NAMED_MUTEX_HPP -#define BOOST_INTERPROCESS_XSI_XSI_NAMED_MUTEX_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_WINDOWS) -#error "This header can't be used in Windows operating systems" -#endif - -#include <boost/move/utility_core.hpp> -#include <boost/interprocess/creation_tags.hpp> -#include <boost/interprocess/exceptions.hpp> -#include <boost/interprocess/detail/utilities.hpp> -#include <boost/interprocess/detail/os_file_functions.hpp> -#include <boost/interprocess/interprocess_fwd.hpp> -#include <boost/interprocess/exceptions.hpp> -#include <boost/interprocess/sync/xsi/basic_xsi_semaphore.hpp> -#include <boost/interprocess/detail/simple_swap.hpp> - -#include <cstddef> -#include <boost/assert.hpp> -#include <boost/cstdint.hpp> -#include <string> - - -//!\file -//!Describes a class representing a xsi-based named_mutex. - -namespace boost { -namespace interprocess { - -//!A class that wraps a XSI (System V)-based named semaphore -//!that undoes the operation if the process crashes. -class xsi_named_mutex -{ - #if !defined(BOOST_INTERPROCESS_DOXYGEN_INVOKED) - //Non-copyable and non-assignable - xsi_named_mutex(xsi_named_mutex &); - xsi_named_mutex &operator=(xsi_named_mutex &); - #endif //#ifndef BOOST_INTERPROCESS_DOXYGEN_INVOKED - - public: - BOOST_MOVABLE_BUT_NOT_COPYABLE(xsi_named_mutex) - - //!Default constructor. - //!Represents an empty xsi_named_mutex. - xsi_named_mutex(); - - //!Tries to create a new XSI-based named mutex with a key obtained from a call to ftok (with path - //!"path" and id "id"), and permissions "perm". - //!If the named mutex previously exists, it tries to open it. - //!Otherwise throws an error. - xsi_named_mutex(open_or_create_t, const char *path, boost::uint8_t id, int perm = 0666) - { this->priv_open_or_create(ipcdetail::DoOpenOrCreate, path, id, perm); } - - //!Moves the ownership of "moved"'s named mutex to *this. - //!After the call, "moved" does not represent any named mutex - //!Does not throw - xsi_named_mutex(BOOST_RV_REF(xsi_named_mutex) moved) - { this->swap(moved); } - - //!Moves the ownership of "moved"'s named mutex to *this. - //!After the call, "moved" does not represent any named mutex. - //!Does not throw - xsi_named_mutex &operator=(BOOST_RV_REF(xsi_named_mutex) moved) - { - xsi_named_mutex tmp(boost::move(moved)); - this->swap(tmp); - return *this; - } - - //!Swaps two xsi_named_mutex. Does not throw - void swap(xsi_named_mutex &other); - - //!Destroys *this. The named mutex is still valid after - //!destruction. use remove() to destroy the named mutex. - ~xsi_named_mutex(); - - //!Returns the path used to construct the - //!named mutex. - const char *get_path() const; - - //!Returns access - //!permissions - int get_permissions() const; - - //!Returns the mapping handle. - //!Never throws - mapping_handle_t get_mapping_handle() const; - - //!Erases a XSI-based named mutex from the system. - //!Returns false on error. Never throws - bool remove(); - - void lock(); - - void unlock(); - - #if !defined(BOOST_INTERPROCESS_DOXYGEN_INVOKED) - private: - - //!Closes a previously opened file mapping. Never throws. - void priv_close(); - - //!Closes a previously opened file mapping. Never throws. - bool priv_open_or_create( ipcdetail::create_enum_t type - , const char *path - , boost::uint8_t id - , int perm); - int m_semid; - key_t m_key; - boost::uint8_t m_id; - int m_perm; - std::string m_path; - #endif //#ifndef BOOST_INTERPROCESS_DOXYGEN_INVOKED -}; - -#if !defined(BOOST_INTERPROCESS_DOXYGEN_INVOKED) - -inline xsi_named_mutex::xsi_named_mutex() - : m_semid(-1), m_key(-1), m_id(0), m_perm(0), m_path() -{} - -inline xsi_named_mutex::~xsi_named_mutex() -{ this->priv_close(); } - -inline const char *xsi_named_mutex::get_path() const -{ return m_path.c_str(); } - -inline void xsi_named_mutex::swap(xsi_named_mutex &other) -{ - (simple_swap)(m_key, other.m_key); - (simple_swap)(m_id, other.m_id); - (simple_swap)(m_semid, other.m_semid); - (simple_swap)(m_perm, other.m_perm); - m_path.swap(other.m_path); -} - -inline mapping_handle_t xsi_named_mutex::get_mapping_handle() const -{ mapping_handle_t mhnd = { m_semid, true}; return mhnd; } - -inline int xsi_named_mutex::get_permissions() const -{ return m_perm; } - -inline bool xsi_named_mutex::priv_open_or_create - (ipcdetail::create_enum_t type, const char *path, boost::uint8_t id, int perm) -{ - key_t key; - if(path){ - key = ::ftok(path, id); - if(((key_t)-1) == key){ - error_info err = system_error_code(); - throw interprocess_exception(err); - } - } - else{ - key = IPC_PRIVATE; - } - - perm &= 0x01FF; - - int semid; - if(!xsi::simple_sem_open_or_create(key, 1, semid, perm)){ - error_info err = system_error_code(); - throw interprocess_exception(err); - } - - m_perm = perm; - m_semid = semid; - m_path = path ? path : ""; - m_id = id; - m_key = key; - - return true; -} - -inline void xsi_named_mutex::priv_close() -{ -} - -inline void xsi_named_mutex::lock() -{ - if(!xsi::simple_sem_op(m_semid, -1)){ - error_info err = system_error_code(); - throw interprocess_exception(err); - } -} - -inline void xsi_named_mutex::unlock() -{ - bool success = xsi::simple_sem_op(m_semid, 1); - (void)success; - BOOST_ASSERT(success); -} - -inline bool xsi_named_mutex::remove() -{ - if(m_semid != -1){ - int ret = ::semctl(m_semid, IPC_RMID, 0); - if(-1 == ret) - return false; - //Now put it in default-constructed state - m_semid = -1; - m_key = -1; - m_id = 0; - m_perm = 0; - m_path.clear(); - } - return false; -} - -#endif //#ifndef BOOST_INTERPROCESS_DOXYGEN_INVOKED - -} //namespace interprocess { -} //namespace boost { - -#include <boost/interprocess/detail/config_end.hpp> - -#endif //BOOST_INTERPROCESS_XSI_XSI_NAMED_MUTEX_HPP |