Squashed 'boost/' content from commit b4feb19f2

git-subtree-dir: boost
git-subtree-split: b4feb19f287ee92d87a9624b5d36b7cf46aeadeb

boost/interprocess/sync/shm/named_creation_functor.hpp

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+//////////////////////////////////////////////////////////////////////////////
+//
+// (C) Copyright Ion Gaztanaga 2007-2012. 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_SYNC_NAMED_CREATION_FUNCTOR_HPP
+#define BOOST_INTERPROCESS_SYNC_NAMED_CREATION_FUNCTOR_HPP
+
+#ifndef BOOST_CONFIG_HPP
+#  include <boost/config.hpp>
+#endif
+#
+#if defined(BOOST_HAS_PRAGMA_ONCE)
+#  pragma once
+#endif
+
+#include <boost/interprocess/creation_tags.hpp>
+#include <boost/interprocess/detail/type_traits.hpp>
+#include <boost/interprocess/detail/mpl.hpp>
+#include <boost/container/detail/placement_new.hpp>
+
+namespace boost {
+namespace interprocess {
+namespace ipcdetail {
+
+struct named_creation_functor_no_arg{};
+
+template <class T, class Arg = named_creation_functor_no_arg>
+class named_creation_functor
+{
+   typedef named_creation_functor_no_arg no_arg_t;
+   public:
+   named_creation_functor(create_enum_t type, Arg arg = Arg())
+      :  m_creation_type(type), m_arg(arg){}
+
+   template<class ArgType>
+   void construct(void *address, typename enable_if_c<is_same<ArgType, no_arg_t>::value>::type * = 0) const
+   {  ::new(address, boost_container_new_t())T; }
+
+   template<class ArgType>
+   void construct(void *address, typename enable_if_c<!is_same<ArgType, no_arg_t>::value>::type * = 0) const
+   {  ::new(address, boost_container_new_t())T(m_arg); }
+
+   bool operator()(void *address, std::size_t, bool created) const
+   {
+      switch(m_creation_type){
+         case DoOpen:
+            return true;
+         break;
+         case DoCreate:
+         case DoOpenOrCreate:
+            if(created){
+               construct<Arg>(address);
+            }
+            return true;
+         break;
+
+         default:
+            return false;
+         break;
+      }
+   }
+
+   static std::size_t get_min_size()
+   {  return sizeof(T);  }
+
+   private:
+   create_enum_t m_creation_type;
+   Arg m_arg;
+};
+
+}  //namespace ipcdetail {
+}  //namespace interprocess {
+}  //namespace boost {
+
+#endif   //BOOST_INTERPROCESS_SYNC_NAMED_CREATION_FUNCTOR_HPP

boost/interprocess/sync/shm/named_mutex.hpp

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+//////////////////////////////////////////////////////////////////////////////
+//
+// (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_SHM_NAMED_MUTEX_HPP
+#define BOOST_INTERPROCESS_SHM_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>
+#include <boost/interprocess/creation_tags.hpp>
+#include <boost/interprocess/exceptions.hpp>
+#include <boost/interprocess/detail/interprocess_tester.hpp>
+#include <boost/interprocess/permissions.hpp>
+#include <boost/interprocess/detail/posix_time_types_wrk.hpp>
+
+#include <boost/interprocess/shared_memory_object.hpp>
+#include <boost/interprocess/sync/interprocess_mutex.hpp>
+#include <boost/interprocess/detail/managed_open_or_create_impl.hpp>
+#include <boost/interprocess/sync/shm/named_creation_functor.hpp>
+
+//!\file
+//!Describes a named mutex class for inter-process synchronization
+
+namespace boost {
+namespace interprocess {
+namespace ipcdetail {
+
+class named_condition;
+
+//!A mutex with a global name, so it can be found from different
+//!processes. This mutex can't be placed in shared memory, and
+//!each process should have it's own named mutex.
+class shm_named_mutex
+{
+   #if !defined(BOOST_INTERPROCESS_DOXYGEN_INVOKED)
+
+   //Non-copyable
+   shm_named_mutex();
+   shm_named_mutex(const shm_named_mutex &);
+   shm_named_mutex &operator=(const shm_named_mutex &);
+   friend class named_condition;
+   #endif   //#ifndef BOOST_INTERPROCESS_DOXYGEN_INVOKED
+
+   public:
+   //!Creates a global interprocess_mutex with a name.
+   //!Throws interprocess_exception on error.
+   shm_named_mutex(create_only_t create_only, const char *name, const permissions &perm = permissions());
+
+   //!Opens or creates a global mutex with a name.
+   //!If the mutex is created, this call is equivalent to
+   //!shm_named_mutex(create_only_t, ... )
+   //!If the mutex is already created, this call is equivalent
+   //!shm_named_mutex(open_only_t, ... )
+   //!Does not throw
+   shm_named_mutex(open_or_create_t open_or_create, const char *name, const permissions &perm = permissions());
+
+   //!Opens a global mutex with a name if that mutex is previously
+   //!created. If it is not previously created this function throws
+   //!interprocess_exception.
+   shm_named_mutex(open_only_t open_only, const char *name);
+
+   //!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().
+   ~shm_named_mutex();
+
+   //!Unlocks a previously locked
+   //!interprocess_mutex.
+   void unlock();
+
+   //!Locks interprocess_mutex, sleeps when interprocess_mutex is already locked.
+   //!Throws interprocess_exception if a severe error is found
+   void lock();
+
+   //!Tries to lock the interprocess_mutex, returns false when interprocess_mutex
+   //!is already locked, returns true when success.
+   //!Throws interprocess_exception if a severe error is found
+   bool try_lock();
+
+   //!Tries to lock the interprocess_mutex until time abs_time,
+   //!Returns false when timeout expires, returns true when locks.
+   //!Throws interprocess_exception if a severe error is found
+   bool timed_lock(const boost::posix_time::ptime &abs_time);
+
+   //!Erases a named mutex from the system.
+   //!Returns false on error. Never throws.
+   static bool remove(const char *name);
+
+   #if !defined(BOOST_INTERPROCESS_DOXYGEN_INVOKED)
+   typedef interprocess_mutex internal_mutex_type;
+   interprocess_mutex &internal_mutex()
+   {  return *static_cast<interprocess_mutex*>(m_shmem.get_user_address()); }
+
+   private:
+   friend class ipcdetail::interprocess_tester;
+   void dont_close_on_destruction();
+   typedef ipcdetail::managed_open_or_create_impl<shared_memory_object, 0, true, false> open_create_impl_t;
+   open_create_impl_t m_shmem;
+   typedef ipcdetail::named_creation_functor<interprocess_mutex> construct_func_t;
+   #endif   //#ifndef BOOST_INTERPROCESS_DOXYGEN_INVOKED
+};
+
+#if !defined(BOOST_INTERPROCESS_DOXYGEN_INVOKED)
+
+inline void shm_named_mutex::dont_close_on_destruction()
+{  ipcdetail::interprocess_tester::dont_close_on_destruction(m_shmem);  }
+
+inline shm_named_mutex::~shm_named_mutex()
+{}
+
+inline shm_named_mutex::shm_named_mutex(create_only_t, const char *name, const permissions &perm)
+   :  m_shmem  (create_only
+               ,name
+               ,sizeof(interprocess_mutex) +
+                  open_create_impl_t::ManagedOpenOrCreateUserOffset
+               ,read_write
+               ,0
+               ,construct_func_t(ipcdetail::DoCreate)
+               ,perm)
+{}
+
+inline shm_named_mutex::shm_named_mutex(open_or_create_t, const char *name, const permissions &perm)
+   :  m_shmem  (open_or_create
+               ,name
+               ,sizeof(interprocess_mutex) +
+                  open_create_impl_t::ManagedOpenOrCreateUserOffset
+               ,read_write
+               ,0
+               ,construct_func_t(ipcdetail::DoOpenOrCreate)
+               ,perm)
+{}
+
+inline shm_named_mutex::shm_named_mutex(open_only_t, const char *name)
+   :  m_shmem  (open_only
+               ,name
+               ,read_write
+               ,0
+               ,construct_func_t(ipcdetail::DoOpen))
+{}
+
+inline void shm_named_mutex::lock()
+{  this->internal_mutex().lock();  }
+
+inline void shm_named_mutex::unlock()
+{  this->internal_mutex().unlock();  }
+
+inline bool shm_named_mutex::try_lock()
+{  return this->internal_mutex().try_lock();  }
+
+inline bool shm_named_mutex::timed_lock(const boost::posix_time::ptime &abs_time)
+{  return this->internal_mutex().timed_lock(abs_time);   }
+
+inline bool shm_named_mutex::remove(const char *name)
+{  return shared_memory_object::remove(name); }
+
+#endif   //#ifndef BOOST_INTERPROCESS_DOXYGEN_INVOKED
+
+}  //namespace ipcdetail {
+}  //namespace interprocess {
+}  //namespace boost {
+
+#include <boost/interprocess/detail/config_end.hpp>
+
+#endif   //BOOST_INTERPROCESS_SHM_NAMED_MUTEX_HPP