stabilize build system: depends, installer, boost/bdb fixes, cross targets groundwork

depends/x86_64-pc-linux-gnu/include/boost/interprocess/sync/spin/condition.hpp

@@ -0,0 +1,304 @@
+//////////////////////////////////////////////////////////////////////////////
+//
+// (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_DETAIL_SPIN_CONDITION_HPP
+#define BOOST_INTERPROCESS_DETAIL_SPIN_CONDITION_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/sync/spin/mutex.hpp>
+#include <boost/interprocess/detail/posix_time_types_wrk.hpp>
+#include <boost/interprocess/detail/atomic.hpp>
+#include <boost/interprocess/sync/scoped_lock.hpp>
+#include <boost/interprocess/exceptions.hpp>
+#include <boost/interprocess/detail/os_thread_functions.hpp>
+#include <boost/interprocess/sync/spin/wait.hpp>
+#include <boost/move/utility_core.hpp>
+#include <boost/cstdint.hpp>
+
+namespace boost {
+namespace interprocess {
+namespace ipcdetail {
+
+class spin_condition
+{
+   spin_condition(const spin_condition &);
+   spin_condition &operator=(const spin_condition &);
+   public:
+   spin_condition();
+   ~spin_condition();
+
+   void notify_one();
+   void notify_all();
+
+   template <typename L>
+   bool timed_wait(L& lock, const boost::posix_time::ptime &abs_time)
+   {
+      if (!lock)
+         throw lock_exception();
+      //Handle infinity absolute time here to avoid complications in do_timed_wait
+      if(abs_time == boost::posix_time::pos_infin){
+         this->wait(lock);
+         return true;
+      }
+      return this->do_timed_wait(abs_time, *lock.mutex());
+   }
+
+   template <typename L, typename Pr>
+   bool timed_wait(L& lock, const boost::posix_time::ptime &abs_time, Pr pred)
+   {
+      if (!lock)
+         throw lock_exception();
+      //Handle infinity absolute time here to avoid complications in do_timed_wait
+      if(abs_time == boost::posix_time::pos_infin){
+         this->wait(lock, pred);
+         return true;
+      }
+      while (!pred()){
+         if (!this->do_timed_wait(abs_time, *lock.mutex()))
+            return pred();
+      }
+      return true;
+   }
+
+   template <typename L>
+   void wait(L& lock)
+   {
+      if (!lock)
+         throw lock_exception();
+      do_wait(*lock.mutex());
+   }
+
+   template <typename L, typename Pr>
+   void wait(L& lock, Pr pred)
+   {
+      if (!lock)
+         throw lock_exception();
+
+      while (!pred())
+         do_wait(*lock.mutex());
+   }
+
+   template<class InterprocessMutex>
+   void do_wait(InterprocessMutex &mut);
+
+   template<class InterprocessMutex>
+   bool do_timed_wait(const boost::posix_time::ptime &abs_time, InterprocessMutex &mut);
+
+   private:
+   template<class InterprocessMutex>
+   bool do_timed_wait(bool tout_enabled, const boost::posix_time::ptime &abs_time, InterprocessMutex &mut);
+
+   enum { SLEEP = 0, NOTIFY_ONE, NOTIFY_ALL };
+   spin_mutex  m_enter_mut;
+   volatile boost::uint32_t    m_command;
+   volatile boost::uint32_t    m_num_waiters;
+   void notify(boost::uint32_t command);
+};
+
+inline spin_condition::spin_condition()
+{
+   //Note that this class is initialized to zero.
+   //So zeroed memory can be interpreted as an initialized
+   //condition variable
+   m_command      = SLEEP;
+   m_num_waiters  = 0;
+}
+
+inline spin_condition::~spin_condition()
+{
+   //Notify all waiting threads
+   //to allow POSIX semantics on condition destruction
+   this->notify_all();
+}
+
+inline void spin_condition::notify_one()
+{
+   this->notify(NOTIFY_ONE);
+}
+
+inline void spin_condition::notify_all()
+{
+   this->notify(NOTIFY_ALL);
+}
+
+inline void spin_condition::notify(boost::uint32_t command)
+{
+   //This mutex guarantees that no other thread can enter to the
+   //do_timed_wait method logic, so that thread count will be
+   //constant until the function writes a NOTIFY_ALL command.
+   //It also guarantees that no other notification can be signaled
+   //on this spin_condition before this one ends
+   m_enter_mut.lock();
+
+   //Return if there are no waiters
+   if(!atomic_read32(&m_num_waiters)) {
+      m_enter_mut.unlock();
+      return;
+   }
+
+   //Notify that all threads should execute wait logic
+   spin_wait swait;
+   while(SLEEP != atomic_cas32(const_cast<boost::uint32_t*>(&m_command), command, SLEEP)){
+      swait.yield();
+   }
+   //The enter mutex will rest locked until the last waiting thread unlocks it
+}
+
+template<class InterprocessMutex>
+inline void spin_condition::do_wait(InterprocessMutex &mut)
+{
+   this->do_timed_wait(false, boost::posix_time::ptime(), mut);
+}
+
+template<class InterprocessMutex>
+inline bool spin_condition::do_timed_wait
+   (const boost::posix_time::ptime &abs_time, InterprocessMutex &mut)
+{
+   return this->do_timed_wait(true, abs_time, mut);
+}
+
+template<class InterprocessMutex>
+inline bool spin_condition::do_timed_wait(bool tout_enabled,
+                                     const boost::posix_time::ptime &abs_time,
+                                     InterprocessMutex &mut)
+{
+   boost::posix_time::ptime now = microsec_clock::universal_time();
+
+   if(tout_enabled){
+      if(now >= abs_time) return false;
+   }
+
+   typedef boost::interprocess::scoped_lock<spin_mutex> InternalLock;
+   //The enter mutex guarantees that while executing a notification,
+   //no other thread can execute the do_timed_wait method.
+   {
+      //---------------------------------------------------------------
+      InternalLock lock;
+      if(tout_enabled){
+         InternalLock dummy(m_enter_mut, abs_time);
+         lock = boost::move(dummy);
+      }
+      else{
+         InternalLock dummy(m_enter_mut);
+         lock = boost::move(dummy);
+      }
+
+      if(!lock)
+         return false;
+      //---------------------------------------------------------------
+      //We increment the waiting thread count protected so that it will be
+      //always constant when another thread enters the notification logic.
+      //The increment marks this thread as "waiting on spin_condition"
+      atomic_inc32(const_cast<boost::uint32_t*>(&m_num_waiters));
+
+      //We unlock the external mutex atomically with the increment
+      mut.unlock();
+   }
+
+   //By default, we suppose that no timeout has happened
+   bool timed_out  = false, unlock_enter_mut= false;
+
+   //Loop until a notification indicates that the thread should
+   //exit or timeout occurs
+   while(1){
+      //The thread sleeps/spins until a spin_condition commands a notification
+      //Notification occurred, we will lock the checking mutex so that
+      spin_wait swait;
+      while(atomic_read32(&m_command) == SLEEP){
+         swait.yield();
+
+         //Check for timeout
+         if(tout_enabled){
+            now = microsec_clock::universal_time();
+
+            if(now >= abs_time){
+               //If we can lock the mutex it means that no notification
+               //is being executed in this spin_condition variable
+               timed_out = m_enter_mut.try_lock();
+
+               //If locking fails, indicates that another thread is executing
+               //notification, so we play the notification game
+               if(!timed_out){
+                  //There is an ongoing notification, we will try again later
+                  continue;
+               }
+               //No notification in execution, since enter mutex is locked.
+               //We will execute time-out logic, so we will decrement count,
+               //release the enter mutex and return false.
+               break;
+            }
+         }
+      }
+
+      //If a timeout occurred, the mutex will not execute checking logic
+      if(tout_enabled && timed_out){
+         //Decrement wait count
+         atomic_dec32(const_cast<boost::uint32_t*>(&m_num_waiters));
+         unlock_enter_mut = true;
+         break;
+      }
+      else{
+         boost::uint32_t result = atomic_cas32
+                        (const_cast<boost::uint32_t*>(&m_command), SLEEP, NOTIFY_ONE);
+         if(result == SLEEP){
+            //Other thread has been notified and since it was a NOTIFY one
+            //command, this thread must sleep again
+            continue;
+         }
+         else if(result == NOTIFY_ONE){
+            //If it was a NOTIFY_ONE command, only this thread should
+            //exit. This thread has atomically marked command as sleep before
+            //so no other thread will exit.
+            //Decrement wait count.
+            unlock_enter_mut = true;
+            atomic_dec32(const_cast<boost::uint32_t*>(&m_num_waiters));
+            break;
+         }
+         else{
+            //If it is a NOTIFY_ALL command, all threads should return
+            //from do_timed_wait function. Decrement wait count.
+            unlock_enter_mut = 1 == atomic_dec32(const_cast<boost::uint32_t*>(&m_num_waiters));
+            //Check if this is the last thread of notify_all waiters
+            //Only the last thread will release the mutex
+            if(unlock_enter_mut){
+               atomic_cas32(const_cast<boost::uint32_t*>(&m_command), SLEEP, NOTIFY_ALL);
+            }
+            break;
+         }
+      }
+   }
+
+   //Unlock the enter mutex if it is a single notification, if this is
+   //the last notified thread in a notify_all or a timeout has occurred
+   if(unlock_enter_mut){
+      m_enter_mut.unlock();
+   }
+
+   //Lock external again before returning from the method
+   mut.lock();
+   return !timed_out;
+}
+
+}  //namespace ipcdetail
+}  //namespace interprocess
+}  //namespace boost
+
+#include <boost/interprocess/detail/config_end.hpp>
+
+#endif   //BOOST_INTERPROCESS_DETAIL_SPIN_CONDITION_HPP

depends/x86_64-pc-linux-gnu/include/boost/interprocess/sync/spin/interprocess_barrier.hpp

@@ -0,0 +1,54 @@
+//////////////////////////////////////////////////////////////////////////////
+//
+// (C) Copyright Ion Gaztanaga 2006. 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.
+//
+//////////////////////////////////////////////////////////////////////////////
+
+#include<boost/interprocess/exceptions.hpp>
+#include <boost/interprocess/detail/posix_time_types_wrk.hpp>
+#include <boost/interprocess/sync/scoped_lock.hpp>
+
+#ifndef BOOST_CONFIG_HPP
+#  include <boost/config.hpp>
+#endif
+#
+#if defined(BOOST_HAS_PRAGMA_ONCE)
+#  pragma once
+#endif
+
+namespace boost {
+namespace interprocess {
+
+inline barrier::barrier(unsigned int count)
+   : m_threshold(count), m_count(count), m_generation(0)
+{
+   if (count == 0)
+      throw std::invalid_argument("count cannot be zero.");
+}
+
+inline barrier::~barrier(){}
+
+inline bool barrier::wait()
+{
+   scoped_lock<interprocess_mutex> lock(m_mutex);
+   unsigned int gen = m_generation;
+
+   if (--m_count == 0){
+      m_generation++;
+      m_count = m_threshold;
+      m_cond.notify_all();
+      return true;
+   }
+
+   while (gen == m_generation){
+      m_cond.wait(lock);
+   }
+   return false;
+}
+
+}  //namespace interprocess {
+}  //namespace boost {

depends/x86_64-pc-linux-gnu/include/boost/interprocess/sync/spin/mutex.hpp

@@ -0,0 +1,87 @@
+//////////////////////////////////////////////////////////////////////////////
+//
+// (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_DETAIL_SPIN_MUTEX_HPP
+#define BOOST_INTERPROCESS_DETAIL_SPIN_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/detail/posix_time_types_wrk.hpp>
+#include <boost/assert.hpp>
+#include <boost/interprocess/detail/atomic.hpp>
+#include <boost/cstdint.hpp>
+#include <boost/interprocess/detail/os_thread_functions.hpp>
+#include <boost/interprocess/sync/detail/common_algorithms.hpp>
+
+namespace boost {
+namespace interprocess {
+namespace ipcdetail {
+
+class spin_mutex
+{
+   spin_mutex(const spin_mutex &);
+   spin_mutex &operator=(const spin_mutex &);
+   public:
+
+   spin_mutex();
+   ~spin_mutex();
+
+   void lock();
+   bool try_lock();
+   bool timed_lock(const boost::posix_time::ptime &abs_time);
+   void unlock();
+   void take_ownership(){};
+   private:
+   volatile boost::uint32_t m_s;
+};
+
+inline spin_mutex::spin_mutex()
+   : m_s(0)
+{
+   //Note that this class is initialized to zero.
+   //So zeroed memory can be interpreted as an
+   //initialized mutex
+}
+
+inline spin_mutex::~spin_mutex()
+{
+   //Trivial destructor
+}
+
+inline void spin_mutex::lock(void)
+{  return ipcdetail::try_based_lock(*this); }
+
+inline bool spin_mutex::try_lock(void)
+{
+   boost::uint32_t prev_s = ipcdetail::atomic_cas32(const_cast<boost::uint32_t*>(&m_s), 1, 0);
+   return m_s == 1 && prev_s == 0;
+}
+
+inline bool spin_mutex::timed_lock(const boost::posix_time::ptime &abs_time)
+{  return ipcdetail::try_based_timed_lock(*this, abs_time); }
+
+inline void spin_mutex::unlock(void)
+{  ipcdetail::atomic_cas32(const_cast<boost::uint32_t*>(&m_s), 0, 1);   }
+
+}  //namespace ipcdetail {
+}  //namespace interprocess {
+}  //namespace boost {
+
+#include <boost/interprocess/detail/config_end.hpp>
+
+#endif   //BOOST_INTERPROCESS_DETAIL_SPIN_MUTEX_HPP

depends/x86_64-pc-linux-gnu/include/boost/interprocess/sync/spin/recursive_mutex.hpp

@@ -0,0 +1,176 @@
+//////////////////////////////////////////////////////////////////////////////
+//
+// (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.
+//
+//////////////////////////////////////////////////////////////////////////////
+//
+// Parts of the pthread code come from Boost Threads code:
+//
+//////////////////////////////////////////////////////////////////////////////
+//
+// Copyright (C) 2001-2003
+// William E. Kempf
+//
+// Permission to use, copy, modify, distribute and sell this software
+// and its documentation for any purpose is hereby granted without fee,
+// provided that the above copyright notice appear in all copies and
+// that both that copyright notice and this permission notice appear
+// in supporting documentation.  William E. Kempf makes no representations
+// about the suitability of this software for any purpose.
+// It is provided "as is" without express or implied warranty.
+//////////////////////////////////////////////////////////////////////////////
+
+#ifndef BOOST_INTERPROCESS_DETAIL_SPIN_RECURSIVE_MUTEX_HPP
+#define BOOST_INTERPROCESS_DETAIL_SPIN_RECURSIVE_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/detail/posix_time_types_wrk.hpp>
+#include <boost/interprocess/detail/os_thread_functions.hpp>
+#include <boost/interprocess/exceptions.hpp>
+#include <boost/interprocess/detail/atomic.hpp>
+#include <boost/cstdint.hpp>
+#include <boost/interprocess/detail/os_thread_functions.hpp>
+#include <boost/interprocess/sync/spin/mutex.hpp>
+#include <boost/assert.hpp>
+
+namespace boost {
+namespace interprocess {
+namespace ipcdetail {
+
+class spin_recursive_mutex
+{
+   spin_recursive_mutex(const spin_recursive_mutex &);
+   spin_recursive_mutex &operator=(const spin_recursive_mutex &);
+   public:
+
+   spin_recursive_mutex();
+   ~spin_recursive_mutex();
+
+   void lock();
+   bool try_lock();
+   bool timed_lock(const boost::posix_time::ptime &abs_time);
+   void unlock();
+   void take_ownership();
+   private:
+   spin_mutex     m_mutex;
+   unsigned int   m_nLockCount;
+   volatile ipcdetail::OS_systemwide_thread_id_t   m_nOwner;
+   volatile boost::uint32_t m_s;
+};
+
+inline spin_recursive_mutex::spin_recursive_mutex()
+   : m_nLockCount(0), m_nOwner(ipcdetail::get_invalid_systemwide_thread_id()){}
+
+inline spin_recursive_mutex::~spin_recursive_mutex(){}
+
+inline void spin_recursive_mutex::lock()
+{
+   typedef ipcdetail::OS_systemwide_thread_id_t handle_t;
+   const handle_t thr_id(ipcdetail::get_current_systemwide_thread_id());
+   handle_t old_id;
+   ipcdetail::systemwide_thread_id_copy(m_nOwner, old_id);
+   if(ipcdetail::equal_systemwide_thread_id(thr_id , old_id)){
+      if((unsigned int)(m_nLockCount+1) == 0){
+         //Overflow, throw an exception
+         throw interprocess_exception("boost::interprocess::spin_recursive_mutex recursive lock overflow");
+      }
+      ++m_nLockCount;
+   }
+   else{
+      m_mutex.lock();
+      ipcdetail::systemwide_thread_id_copy(thr_id, m_nOwner);
+      m_nLockCount = 1;
+   }
+}
+
+inline bool spin_recursive_mutex::try_lock()
+{
+   typedef ipcdetail::OS_systemwide_thread_id_t handle_t;
+   handle_t thr_id(ipcdetail::get_current_systemwide_thread_id());
+   handle_t old_id;
+   ipcdetail::systemwide_thread_id_copy(m_nOwner, old_id);
+   if(ipcdetail::equal_systemwide_thread_id(thr_id , old_id)) {  // we own it
+      if((unsigned int)(m_nLockCount+1) == 0){
+         //Overflow, throw an exception
+         throw interprocess_exception("boost::interprocess::spin_recursive_mutex recursive lock overflow");
+      }
+      ++m_nLockCount;
+      return true;
+   }
+   if(m_mutex.try_lock()){
+      ipcdetail::systemwide_thread_id_copy(thr_id, m_nOwner);
+      m_nLockCount = 1;
+      return true;
+   }
+   return false;
+}
+
+inline bool spin_recursive_mutex::timed_lock(const boost::posix_time::ptime &abs_time)
+{
+   typedef ipcdetail::OS_systemwide_thread_id_t handle_t;
+   const handle_t thr_id(ipcdetail::get_current_systemwide_thread_id());
+   handle_t old_id;
+   ipcdetail::systemwide_thread_id_copy(m_nOwner, old_id);
+   if(ipcdetail::equal_systemwide_thread_id(thr_id , old_id)) {  // we own it
+      if((unsigned int)(m_nLockCount+1) == 0){
+         //Overflow, throw an exception
+         throw interprocess_exception("boost::interprocess::spin_recursive_mutex recursive lock overflow");
+      }
+      ++m_nLockCount;
+      return true;
+   }
+   //m_mutex supports abs_time so no need to check it
+   if(m_mutex.timed_lock(abs_time)){
+      ipcdetail::systemwide_thread_id_copy(thr_id, m_nOwner);
+      m_nLockCount = 1;
+      return true;
+   }
+   return false;
+}
+
+inline void spin_recursive_mutex::unlock()
+{
+   typedef ipcdetail::OS_systemwide_thread_id_t handle_t;
+   handle_t old_id;
+   ipcdetail::systemwide_thread_id_copy(m_nOwner, old_id);
+   const handle_t thr_id(ipcdetail::get_current_systemwide_thread_id());
+   (void)old_id;
+   (void)thr_id;
+   BOOST_ASSERT(ipcdetail::equal_systemwide_thread_id(thr_id, old_id));
+   --m_nLockCount;
+   if(!m_nLockCount){
+      const handle_t new_id(ipcdetail::get_invalid_systemwide_thread_id());
+      ipcdetail::systemwide_thread_id_copy(new_id, m_nOwner);
+      m_mutex.unlock();
+   }
+}
+
+inline void spin_recursive_mutex::take_ownership()
+{
+   typedef ipcdetail::OS_systemwide_thread_id_t handle_t;
+   this->m_nLockCount = 1;
+   const handle_t thr_id(ipcdetail::get_current_systemwide_thread_id());
+   ipcdetail::systemwide_thread_id_copy(thr_id, m_nOwner);
+}
+
+}  //namespace ipcdetail {
+}  //namespace interprocess {
+}  //namespace boost {
+
+#include <boost/interprocess/detail/config_end.hpp>
+
+#endif   //BOOST_INTERPROCESS_DETAIL_SPIN_RECURSIVE_MUTEX_HPP

depends/x86_64-pc-linux-gnu/include/boost/interprocess/sync/spin/semaphore.hpp

@@ -0,0 +1,94 @@
+//////////////////////////////////////////////////////////////////////////////
+//
+// (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_DETAIL_SPIN_SEMAPHORE_HPP
+#define BOOST_INTERPROCESS_DETAIL_SPIN_SEMAPHORE_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/detail/atomic.hpp>
+#include <boost/interprocess/detail/os_thread_functions.hpp>
+#include <boost/interprocess/detail/posix_time_types_wrk.hpp>
+#include <boost/interprocess/sync/detail/common_algorithms.hpp>
+#include <boost/interprocess/sync/detail/locks.hpp>
+#include <boost/cstdint.hpp>
+
+namespace boost {
+namespace interprocess {
+namespace ipcdetail {
+
+class spin_semaphore
+{
+   spin_semaphore(const spin_semaphore &);
+   spin_semaphore &operator=(const spin_semaphore &);
+
+   public:
+   spin_semaphore(unsigned int initialCount);
+   ~spin_semaphore();
+
+   void post();
+   void wait();
+   bool try_wait();
+   bool timed_wait(const boost::posix_time::ptime &abs_time);
+
+//   int get_count() const;
+   private:
+   volatile boost::uint32_t m_count;
+};
+
+
+inline spin_semaphore::~spin_semaphore()
+{}
+
+inline spin_semaphore::spin_semaphore(unsigned int initialCount)
+{  ipcdetail::atomic_write32(&this->m_count, boost::uint32_t(initialCount));  }
+
+inline void spin_semaphore::post()
+{
+   ipcdetail::atomic_inc32(&m_count);
+}
+
+inline void spin_semaphore::wait()
+{
+   ipcdetail::lock_to_wait<spin_semaphore> lw(*this);
+   return ipcdetail::try_based_lock(lw);
+}
+
+inline bool spin_semaphore::try_wait()
+{
+   return ipcdetail::atomic_add_unless32(&m_count, boost::uint32_t(-1), boost::uint32_t(0));
+}
+
+inline bool spin_semaphore::timed_wait(const boost::posix_time::ptime &abs_time)
+{
+   ipcdetail::lock_to_wait<spin_semaphore> lw(*this);
+   return ipcdetail::try_based_timed_lock(lw, abs_time);
+}
+
+//inline int spin_semaphore::get_count() const
+//{
+   //return (int)ipcdetail::atomic_read32(&m_count);
+//}
+
+}  //namespace ipcdetail {
+}  //namespace interprocess {
+}  //namespace boost {
+
+#include <boost/interprocess/detail/config_end.hpp>
+
+#endif   //BOOST_INTERPROCESS_DETAIL_SPIN_SEMAPHORE_HPP

depends/x86_64-pc-linux-gnu/include/boost/interprocess/sync/spin/wait.hpp

@@ -0,0 +1,185 @@
+//////////////////////////////////////////////////////////////////////////////
+//
+// (C) Copyright Peter Dimov 2008.
+// (C) Copyright Ion Gaztanaga 2013-2013. 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.
+//
+//////////////////////////////////////////////////////////////////////////////
+
+//Parts of this file come from boost/smart_ptr/detail/yield_k.hpp
+//Many thanks to Peter Dimov.
+
+#ifndef BOOST_INTERPROCESS_SYNC_WAIT_HPP_INCLUDED
+#define BOOST_INTERPROCESS_SYNC_WAIT_HPP_INCLUDED
+
+#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/detail/os_thread_functions.hpp>
+
+//#define BOOST_INTERPROCESS_SPIN_WAIT_DEBUG
+#ifdef BOOST_INTERPROCESS_SPIN_WAIT_DEBUG
+#include <iostream>
+#endif
+
+// BOOST_INTERPROCESS_SMT_PAUSE
+
+#if defined(_MSC_VER) && ( defined(_M_IX86) || defined(_M_X64) )
+
+extern "C" void _mm_pause();
+#pragma intrinsic( _mm_pause )
+
+#define BOOST_INTERPROCESS_SMT_PAUSE _mm_pause();
+
+#elif defined(__GNUC__) && ( defined(__i386__) || defined(__x86_64__) ) && !defined(_CRAYC)
+
+#define BOOST_INTERPROCESS_SMT_PAUSE __asm__ __volatile__( "rep; nop" : : : "memory" );
+
+#endif
+
+namespace boost{
+namespace interprocess{
+namespace ipcdetail {
+
+template<int Dummy = 0>
+class num_core_holder
+{
+   public:
+   static unsigned int get()
+   {
+      if(!num_cores){
+         return ipcdetail::get_num_cores();
+      }
+      else{
+         return num_cores;
+      }
+   }
+
+   private:
+   static unsigned int num_cores;
+};
+
+template<int Dummy>
+unsigned int num_core_holder<Dummy>::num_cores = ipcdetail::get_num_cores();
+
+}  //namespace ipcdetail {
+
+class spin_wait
+{
+   public:
+
+   static const unsigned int nop_pause_limit = 32u;
+   spin_wait()
+      : m_count_start(), m_ul_yield_only_counts(), m_k()
+   {}
+
+   #ifdef BOOST_INTERPROCESS_SPIN_WAIT_DEBUG
+   ~spin_wait()
+   {
+      if(m_k){
+         std::cout << "final m_k: " << m_k
+                   << " system tick(us): " << ipcdetail::get_system_tick_us() << std::endl;
+      }
+   }
+   #endif
+
+   unsigned int count() const
+   {  return m_k;  }
+
+   void yield()
+   {
+      //Lazy initialization of limits
+      if( !m_k){
+         this->init_limits();
+      }
+      //Nop tries
+      if( m_k < (nop_pause_limit >> 2) ){
+
+      }
+      //Pause tries if the processor supports it
+      #if defined(BOOST_INTERPROCESS_SMT_PAUSE)
+      else if( m_k < nop_pause_limit ){
+         BOOST_INTERPROCESS_SMT_PAUSE
+      }
+      #endif
+      //Yield/Sleep strategy
+      else{
+         //Lazy initialization of tick information
+         if(m_k == nop_pause_limit){
+            this->init_tick_info();
+         }
+         else if( this->yield_or_sleep() ){
+            ipcdetail::thread_yield();
+         }
+         else{
+            ipcdetail::thread_sleep_tick();
+         }
+      }
+      ++m_k;
+   }
+
+   void reset()
+   {
+      m_k = 0u;
+   }
+
+   private:
+
+   void init_limits()
+   {
+      unsigned int num_cores = ipcdetail::num_core_holder<0>::get();
+      m_k = num_cores > 1u ? 0u : nop_pause_limit;
+   }
+
+   void init_tick_info()
+   {
+      m_ul_yield_only_counts = ipcdetail::get_system_tick_in_highres_counts();
+      m_count_start = ipcdetail::get_current_system_highres_count();
+   }
+
+   //Returns true if yield must be called, false is sleep must be called
+   bool yield_or_sleep()
+   {
+      if(!m_ul_yield_only_counts){  //If yield-only limit was reached then yield one in every two tries
+         return (m_k & 1u) != 0;
+      }
+      else{ //Try to see if we've reched yield-only time limit
+         const ipcdetail::OS_highres_count_t now = ipcdetail::get_current_system_highres_count();
+         const ipcdetail::OS_highres_count_t elapsed = ipcdetail::system_highres_count_subtract(now, m_count_start);
+         if(!ipcdetail::system_highres_count_less_ul(elapsed, m_ul_yield_only_counts)){
+            #ifdef BOOST_INTERPROCESS_SPIN_WAIT_DEBUG
+            std::cout << "elapsed!\n"
+                      << "  m_ul_yield_only_counts: " << m_ul_yield_only_counts
+                     << " system tick(us): " << ipcdetail::get_system_tick_us() << '\n'
+                      << "  m_k: " << m_k << " elapsed counts: ";
+                     ipcdetail::ostream_highres_count(std::cout, elapsed) << std::endl;
+            #endif
+            //Yield-only time reached, now it's time to sleep
+            m_ul_yield_only_counts = 0ul;
+            return false;
+         }
+      }
+      return true;   //Otherwise yield
+   }
+
+   ipcdetail::OS_highres_count_t m_count_start;
+   unsigned long m_ul_yield_only_counts;
+   unsigned int  m_k;
+};
+
+} // namespace interprocess
+} // namespace boost
+
+#include <boost/interprocess/detail/config_end.hpp>
+
+#endif // #ifndef BOOST_INTERPROCESS_SYNC_WAIT_HPP_INCLUDED