diff --git a/include/boost/interprocess/detail/managed_open_or_create_impl.hpp b/include/boost/interprocess/detail/managed_open_or_create_impl.hpp
index 84a89ad..ea7dc85 100644
--- a/include/boost/interprocess/detail/managed_open_or_create_impl.hpp
+++ b/include/boost/interprocess/detail/managed_open_or_create_impl.hpp
@@ -33,7 +33,7 @@
 #include <boost/interprocess/permissions.hpp>
 #include <boost/container/detail/type_traits.hpp>  //alignment_of, aligned_storage
 #include <boost/interprocess/sync/spin/wait.hpp>
-#include <boost/interprocess/detail/timed_utils.hpp>
+#include <boost/interprocess/timed_utils.hpp>
 #include <boost/move/move.hpp>
 #include <boost/cstdint.hpp>
 
@@ -388,7 +388,7 @@ class managed_open_or_create_impl
       , const void *addr, ConstructFunc construct_func
       , bool ronly, bool cow)
    {
-      const usduration TimeoutSec(usduration_seconds(MaxInitializeTimeSec));
+      const usduration TimeoutSec(usduration_from_seconds(MaxInitializeTimeSec));
 
       if(FileBased){
          offset_t filesize = 0;
diff --git a/include/boost/interprocess/detail/timed_utils.hpp b/include/boost/interprocess/detail/timed_utils.hpp
index 88abb33..268b692 100644
--- a/include/boost/interprocess/detail/timed_utils.hpp
+++ b/include/boost/interprocess/detail/timed_utils.hpp
@@ -42,6 +42,10 @@
 
 namespace boost {
 namespace interprocess {
+
+class ustime;
+class usduration;
+
 namespace ipcdetail {
 
 BOOST_INTRUSIVE_INSTANTIATE_DEFAULT_TYPE_TMPLT(time_duration_type)
@@ -74,6 +78,16 @@ struct enable_if_duration
    : enable_if_c< BOOST_INTRUSIVE_HAS_TYPE(boost::interprocess::ipcdetail::, T, rep) >
 {};
 
+template<class T>
+struct enable_if_ustime
+   : enable_if_c< is_same<T, ustime>::value >
+{};
+
+template<class T>
+struct enable_if_usduration
+   : enable_if_c< is_same<T, usduration>::value >
+{};
+
 #if defined(BOOST_INTERPROCESS_HAS_REENTRANT_STD_FUNCTIONS)
 
    inline std::tm* interprocess_gmtime(const std::time_t* t, std::tm* result)
@@ -135,82 +149,24 @@ inline boost::uint64_t file_time_to_microseconds(const boost::winapi::FILETIME_
 }
 #endif
 
-class ustime;
-
-class usduration
+inline boost::uint64_t universal_time_u64_us()
 {
-   public:
-   friend class ustime;
+   #ifdef BOOST_HAS_GETTIMEOFDAY
+      timeval tv;
+      gettimeofday(&tv, 0); //gettimeofday does not support TZ adjust on Linux.
+      boost::uint64_t micros = boost::uint64_t(tv.tv_sec)*1000000u;
+      micros += (boost::uint64_t)tv.tv_usec;
+   #elif defined(BOOST_HAS_FTIME)
+      boost::winapi::FILETIME_ ft;
+      boost::winapi::GetSystemTimeAsFileTime(&ft);
+      boost::uint64_t micros = file_time_to_microseconds(ft); // it will not wrap, since ft is the current time
+                                                               // and cannot be before 1970-Jan-01
+   #else
+      #error "Unsupported date-time error: neither gettimeofday nor FILETIME support is detected"
+   #endif
+   return micros;
+}
 
-   explicit usduration(boost::uint64_t microsecs)
-      : m_microsecs(microsecs)
-   {}
-
-   boost::uint64_t get_microsecs() const
-   {  return m_microsecs;  }
-
-   bool operator < (const usduration &other) const
-   {  return m_microsecs < other.m_microsecs; }
-
-   bool operator > (const usduration &other) const
-   {  return m_microsecs > other.m_microsecs; }
-
-   bool operator <= (const usduration &other) const
-   {  return m_microsecs <= other.m_microsecs; }
-
-   bool operator >= (const usduration &other) const
-   {  return m_microsecs >= other.m_microsecs; }
-
-   private:
-   boost::uint64_t m_microsecs;
-};
-
-class ustime
-{
-   public:
-   explicit ustime(boost::uint64_t microsecs = 0u)
-      : m_microsecs(microsecs)
-   {}
-
-   ustime &operator += (const usduration &other)
-   {  m_microsecs += other.m_microsecs; return *this; }
-
-   ustime operator + (const usduration &other)
-   {  ustime r(*this); r += other; return r; }
-
-   ustime &operator -= (const usduration &other)
-   {  m_microsecs -= other.m_microsecs; return *this; }
-
-   ustime operator - (const usduration &other)
-   {  ustime r(*this); r -= other; return r; }
-
-   friend usduration operator - (const ustime &l, const ustime &r)
-   {  return usduration(l.m_microsecs - r.m_microsecs); }
-
-   bool operator < (const ustime &other) const
-   {  return m_microsecs < other.m_microsecs; }
-
-   bool operator > (const ustime &other) const
-   {  return m_microsecs > other.m_microsecs; }
-
-   bool operator <= (const ustime &other) const
-   {  return m_microsecs <= other.m_microsecs; }
-
-   bool operator >= (const ustime &other) const
-   {  return m_microsecs >= other.m_microsecs; }
-
-   boost::uint64_t get_microsecs() const
-   {  return m_microsecs;  }
-
-   private:
-   boost::uint64_t m_microsecs;
-};
-
-inline usduration usduration_milliseconds(boost::uint64_t millisec)
-{  return usduration(millisec*1000u);   }
-
-inline usduration usduration_seconds(boost::uint64_t sec)
-{  return usduration(sec*uint64_t(1000000u));   }
 
 template<class TimeType, class Enable = void>
 class microsec_clock;
@@ -266,31 +222,6 @@ class microsec_clock<TimeType, typename enable_if_ptime<TimeType>::type>
    }
 };
 
-template<>
-class microsec_clock<ustime>
-{
-   public:
-   typedef ustime time_point;
-
-   static ustime universal_time()
-   {
-      #ifdef BOOST_HAS_GETTIMEOFDAY
-         timeval tv;
-         gettimeofday(&tv, 0); //gettimeofday does not support TZ adjust on Linux.
-         boost::uint64_t micros = boost::uint64_t(tv.tv_sec)*1000000u;
-         micros += (boost::uint64_t)tv.tv_usec;
-      #elif defined(BOOST_HAS_FTIME)
-         boost::winapi::FILETIME_ ft;
-         boost::winapi::GetSystemTimeAsFileTime(&ft);
-         boost::uint64_t micros = file_time_to_microseconds(ft); // it will not wrap, since ft is the current time
-                                                                  // and cannot be before 1970-Jan-01
-      #else
-         #error "Unsupported date-time error: neither gettimeofday nor FILETIME support is detected"
-      #endif
-      return ustime(micros);
-   }
-};
-
 template<class TimePoint>
 class microsec_clock<TimePoint, typename enable_if_time_point<TimePoint>::type>
 {
@@ -329,35 +260,12 @@ inline boost::uint64_t duration_to_milliseconds(const Duration &d, typename enab
    return static_cast<boost::uint64_t>(double(d.count())*factor);
 }
 
-inline boost::uint64_t duration_to_milliseconds(const usduration &d)
-{
-   return d.get_microsecs()/1000;
-}
-
-// duration_to_usduration
-
 template<class Duration>
-inline usduration duration_to_usduration(const Duration &d, typename enable_if_ptime_duration<Duration>::type* = 0)
+inline boost::uint64_t duration_to_milliseconds(const Duration&d, typename enable_if_usduration<Duration>::type* = 0)
 {
-   return usduration(static_cast<boost::uint64_t>(d.total_microseconds()));
+   return d.get_microsecs()/1000u;
 }
 
-template<class Duration>
-inline usduration duration_to_usduration(const Duration &d, typename enable_if_duration<Duration>::type* = 0)
-{
-   const double factor = double(Duration::period::num)*1000000.0/double(Duration::period::den);
-   return usduration(static_cast<boost::uint64_t>(double(d.count())*factor));
-}
-
-// duration_to_ustime
-
-template<class Duration>
-inline ustime duration_to_ustime(const Duration &d)
-{
-   return microsec_clock<ustime>::universal_time() + (duration_to_usduration)(d);
-}
-
-
 }  //namespace ipcdetail {
 }  //namespace interprocess {
 }  //namespace boost {
diff --git a/include/boost/interprocess/ipc/message_queue.hpp b/include/boost/interprocess/ipc/message_queue.hpp
index 4ef2678..c52ddfc 100644
--- a/include/boost/interprocess/ipc/message_queue.hpp
+++ b/include/boost/interprocess/ipc/message_queue.hpp
@@ -28,7 +28,7 @@
 #include <boost/interprocess/sync/interprocess_mutex.hpp>
 #include <boost/interprocess/sync/scoped_lock.hpp>
 #include <boost/interprocess/detail/utilities.hpp>
-#include <boost/interprocess/detail/timed_utils.hpp>
+#include <boost/interprocess/timed_utils.hpp>
 #include <boost/interprocess/offset_ptr.hpp>
 #include <boost/interprocess/creation_tags.hpp>
 #include <boost/interprocess/exceptions.hpp>
diff --git a/include/boost/interprocess/segment_manager.hpp b/include/boost/interprocess/segment_manager.hpp
index 379e419..d292c50 100644
--- a/include/boost/interprocess/segment_manager.hpp
+++ b/include/boost/interprocess/segment_manager.hpp
@@ -49,6 +49,7 @@
 #ifndef BOOST_NO_EXCEPTIONS
 #include <exception>
 #endif
+#include <typeinfo>
 
 //!\file
 //!Describes the object placed in a memory segment that provides
diff --git a/include/boost/interprocess/sync/detail/common_algorithms.hpp b/include/boost/interprocess/sync/detail/common_algorithms.hpp
index 3cb1d1a..17aafa8 100644
--- a/include/boost/interprocess/sync/detail/common_algorithms.hpp
+++ b/include/boost/interprocess/sync/detail/common_algorithms.hpp
@@ -23,7 +23,7 @@
 #include <boost/interprocess/detail/workaround.hpp>
 
 #include <boost/interprocess/sync/spin/wait.hpp>
-#include <boost/interprocess/detail/timed_utils.hpp>
+#include <boost/interprocess/timed_utils.hpp>
 
 namespace boost {
 namespace interprocess {
@@ -78,7 +78,7 @@ void timeout_when_locking_aware_lock(MutexType &m)
 {
    #ifdef BOOST_INTERPROCESS_ENABLE_TIMEOUT_WHEN_LOCKING
       if (!m.timed_lock(microsec_clock<ustime>::universal_time()
-           + usduration_milliseconds(BOOST_INTERPROCESS_TIMEOUT_WHEN_LOCKING_DURATION_MS)))
+           + usduration_from_milliseconds(BOOST_INTERPROCESS_TIMEOUT_WHEN_LOCKING_DURATION_MS)))
       {
          throw interprocess_exception(timeout_when_locking_error
                                      , "Interprocess mutex timeout when locking. Possible deadlock: "
diff --git a/include/boost/interprocess/sync/file_lock.hpp b/include/boost/interprocess/sync/file_lock.hpp
index a147837..34adbd5 100644
--- a/include/boost/interprocess/sync/file_lock.hpp
+++ b/include/boost/interprocess/sync/file_lock.hpp
@@ -22,6 +22,7 @@
 #include <boost/interprocess/detail/config_begin.hpp>
 #include <boost/interprocess/detail/workaround.hpp>
 #include <boost/interprocess/exceptions.hpp>
+#include <boost/interprocess/timed_utils.hpp>
 #include <boost/interprocess/detail/os_file_functions.hpp>
 #include <boost/interprocess/detail/os_thread_functions.hpp>
 #include <boost/interprocess/sync/detail/common_algorithms.hpp>
diff --git a/include/boost/interprocess/sync/interprocess_condition.hpp b/include/boost/interprocess/sync/interprocess_condition.hpp
index 24ca5b5..7fde9fe 100644
--- a/include/boost/interprocess/sync/interprocess_condition.hpp
+++ b/include/boost/interprocess/sync/interprocess_condition.hpp
@@ -27,6 +27,7 @@
 #include <boost/interprocess/sync/cv_status.hpp>
 #include <boost/interprocess/sync/interprocess_mutex.hpp>
 #include <boost/interprocess/sync/detail/locks.hpp>
+#include <boost/interprocess/timed_utils.hpp>
 #include <boost/interprocess/exceptions.hpp>
 #include <boost/limits.hpp>
 #include <boost/assert.hpp>
diff --git a/include/boost/interprocess/sync/interprocess_condition_any.hpp b/include/boost/interprocess/sync/interprocess_condition_any.hpp
index 6b076a9..4a1d84a 100644
--- a/include/boost/interprocess/sync/interprocess_condition_any.hpp
+++ b/include/boost/interprocess/sync/interprocess_condition_any.hpp
@@ -25,6 +25,7 @@
 #include <boost/interprocess/detail/workaround.hpp>
 
 #include <boost/interprocess/sync/cv_status.hpp>
+#include <boost/interprocess/timed_utils.hpp>
 #include <boost/interprocess/sync/interprocess_mutex.hpp>
 #include <boost/interprocess/sync/interprocess_condition.hpp>
 #include <boost/interprocess/exceptions.hpp>
diff --git a/include/boost/interprocess/sync/interprocess_mutex.hpp b/include/boost/interprocess/sync/interprocess_mutex.hpp
index 4eb1f59..3819080 100644
--- a/include/boost/interprocess/sync/interprocess_mutex.hpp
+++ b/include/boost/interprocess/sync/interprocess_mutex.hpp
@@ -28,6 +28,7 @@
 #include <boost/interprocess/detail/config_begin.hpp>
 #include <boost/interprocess/exceptions.hpp>
 #include <boost/interprocess/detail/workaround.hpp>
+#include <boost/interprocess/timed_utils.hpp>
 #include <boost/assert.hpp>
 #include <boost/interprocess/sync/detail/common_algorithms.hpp>
 
diff --git a/include/boost/interprocess/sync/interprocess_sharable_mutex.hpp b/include/boost/interprocess/sync/interprocess_sharable_mutex.hpp
index 35950ae..bee9eed 100644
--- a/include/boost/interprocess/sync/interprocess_sharable_mutex.hpp
+++ b/include/boost/interprocess/sync/interprocess_sharable_mutex.hpp
@@ -26,6 +26,7 @@
 #include <boost/interprocess/detail/config_begin.hpp>
 #include <boost/interprocess/detail/workaround.hpp>
 #include <boost/interprocess/sync/scoped_lock.hpp>
+#include <boost/interprocess/timed_utils.hpp>
 #include <boost/interprocess/sync/interprocess_mutex.hpp>
 #include <boost/interprocess/sync/interprocess_condition.hpp>
 #include <climits>
diff --git a/include/boost/interprocess/sync/interprocess_upgradable_mutex.hpp b/include/boost/interprocess/sync/interprocess_upgradable_mutex.hpp
index 359a28f..7b7893a 100644
--- a/include/boost/interprocess/sync/interprocess_upgradable_mutex.hpp
+++ b/include/boost/interprocess/sync/interprocess_upgradable_mutex.hpp
@@ -24,6 +24,7 @@
 #include <boost/interprocess/detail/config_begin.hpp>
 #include <boost/interprocess/detail/workaround.hpp>
 #include <boost/interprocess/sync/scoped_lock.hpp>
+#include <boost/interprocess/timed_utils.hpp>
 #include <boost/interprocess/sync/interprocess_mutex.hpp>
 #include <boost/interprocess/sync/interprocess_condition.hpp>
 #include <climits>
diff --git a/include/boost/interprocess/sync/named_condition.hpp b/include/boost/interprocess/sync/named_condition.hpp
index 9ea0182..78a9fb9 100644
--- a/include/boost/interprocess/sync/named_condition.hpp
+++ b/include/boost/interprocess/sync/named_condition.hpp
@@ -25,6 +25,7 @@
 #include <boost/interprocess/sync/cv_status.hpp>
 #include <boost/interprocess/creation_tags.hpp>
 #include <boost/interprocess/exceptions.hpp>
+#include <boost/interprocess/timed_utils.hpp>
 #include <boost/interprocess/detail/interprocess_tester.hpp>
 #include <boost/interprocess/permissions.hpp>
 #include <boost/interprocess/sync/detail/locks.hpp>
diff --git a/include/boost/interprocess/sync/named_condition_any.hpp b/include/boost/interprocess/sync/named_condition_any.hpp
index 174ed9c..2614c46 100644
--- a/include/boost/interprocess/sync/named_condition_any.hpp
+++ b/include/boost/interprocess/sync/named_condition_any.hpp
@@ -25,6 +25,7 @@
 #include <boost/interprocess/sync/cv_status.hpp>
 #include <boost/interprocess/creation_tags.hpp>
 #include <boost/interprocess/exceptions.hpp>
+#include <boost/interprocess/timed_utils.hpp>
 #include <boost/interprocess/detail/interprocess_tester.hpp>
 #include <boost/interprocess/permissions.hpp>
 #include <boost/interprocess/sync/detail/locks.hpp>
diff --git a/include/boost/interprocess/sync/named_mutex.hpp b/include/boost/interprocess/sync/named_mutex.hpp
index 9d74173..c741576 100644
--- a/include/boost/interprocess/sync/named_mutex.hpp
+++ b/include/boost/interprocess/sync/named_mutex.hpp
@@ -23,6 +23,7 @@
 #include <boost/interprocess/detail/workaround.hpp>
 #include <boost/interprocess/creation_tags.hpp>
 #include <boost/interprocess/exceptions.hpp>
+#include <boost/interprocess/timed_utils.hpp>
 #include <boost/interprocess/detail/interprocess_tester.hpp>
 #include <boost/interprocess/permissions.hpp>
 
diff --git a/include/boost/interprocess/sync/named_recursive_mutex.hpp b/include/boost/interprocess/sync/named_recursive_mutex.hpp
index 099bd51..e75d0f9 100644
--- a/include/boost/interprocess/sync/named_recursive_mutex.hpp
+++ b/include/boost/interprocess/sync/named_recursive_mutex.hpp
@@ -23,6 +23,7 @@
 #include <boost/interprocess/detail/workaround.hpp>
 #include <boost/interprocess/creation_tags.hpp>
 #include <boost/interprocess/permissions.hpp>
+#include <boost/interprocess/timed_utils.hpp>
 
 #if !defined(BOOST_INTERPROCESS_FORCE_GENERIC_EMULATION) && defined (BOOST_INTERPROCESS_WINDOWS)
    #include <boost/interprocess/sync/windows/named_recursive_mutex.hpp>
diff --git a/include/boost/interprocess/sync/named_sharable_mutex.hpp b/include/boost/interprocess/sync/named_sharable_mutex.hpp
index 68ce8ef..d56e7b9 100644
--- a/include/boost/interprocess/sync/named_sharable_mutex.hpp
+++ b/include/boost/interprocess/sync/named_sharable_mutex.hpp
@@ -24,6 +24,7 @@
 #include <boost/interprocess/creation_tags.hpp>
 #include <boost/interprocess/exceptions.hpp>
 #include <boost/interprocess/shared_memory_object.hpp>
+#include <boost/interprocess/timed_utils.hpp>
 #include <boost/interprocess/detail/managed_open_or_create_impl.hpp>
 #include <boost/interprocess/sync/interprocess_sharable_mutex.hpp>
 #include <boost/interprocess/sync/shm/named_creation_functor.hpp>
diff --git a/include/boost/interprocess/sync/named_upgradable_mutex.hpp b/include/boost/interprocess/sync/named_upgradable_mutex.hpp
index eaf1283..679e961 100644
--- a/include/boost/interprocess/sync/named_upgradable_mutex.hpp
+++ b/include/boost/interprocess/sync/named_upgradable_mutex.hpp
@@ -28,6 +28,7 @@
 #include <boost/interprocess/sync/interprocess_upgradable_mutex.hpp>
 #include <boost/interprocess/sync/shm/named_creation_functor.hpp>
 #include <boost/interprocess/permissions.hpp>
+#include <boost/interprocess/timed_utils.hpp>
 
 //!\file
 //!Describes a named upgradable mutex class for inter-process synchronization
diff --git a/include/boost/interprocess/sync/posix/condition.hpp b/include/boost/interprocess/sync/posix/condition.hpp
index f151a5b..5b3b752 100644
--- a/include/boost/interprocess/sync/posix/condition.hpp
+++ b/include/boost/interprocess/sync/posix/condition.hpp
@@ -27,7 +27,7 @@
 #include <errno.h>
 #include <boost/interprocess/sync/posix/pthread_helpers.hpp>
 #include <boost/interprocess/sync/posix/timepoint_to_timespec.hpp>
-#include <boost/interprocess/detail/timed_utils.hpp>
+#include <boost/interprocess/timed_utils.hpp>
 #include <boost/interprocess/sync/posix/mutex.hpp>
 #include <boost/assert.hpp>
 
diff --git a/include/boost/interprocess/sync/posix/mutex.hpp b/include/boost/interprocess/sync/posix/mutex.hpp
index 69cc162..8716f79 100644
--- a/include/boost/interprocess/sync/posix/mutex.hpp
+++ b/include/boost/interprocess/sync/posix/mutex.hpp
@@ -44,7 +44,7 @@
 #include <boost/interprocess/sync/posix/timepoint_to_timespec.hpp>
 #include <boost/interprocess/exceptions.hpp>
 #include <boost/interprocess/sync/posix/pthread_helpers.hpp>
-#include <boost/interprocess/detail/timed_utils.hpp>
+#include <boost/interprocess/timed_utils.hpp>
 
 
 #ifndef BOOST_INTERPROCESS_POSIX_TIMEOUTS
diff --git a/include/boost/interprocess/sync/posix/named_mutex.hpp b/include/boost/interprocess/sync/posix/named_mutex.hpp
index ac79b05..bdf3ea4 100644
--- a/include/boost/interprocess/sync/posix/named_mutex.hpp
+++ b/include/boost/interprocess/sync/posix/named_mutex.hpp
@@ -25,7 +25,7 @@
 #include <boost/interprocess/exceptions.hpp>
 #include <boost/interprocess/detail/interprocess_tester.hpp>
 #include <boost/interprocess/permissions.hpp>
-
+#include <boost/interprocess/timed_utils.hpp>
 #include <boost/interprocess/sync/posix/named_semaphore.hpp>
 
 namespace boost {
diff --git a/include/boost/interprocess/sync/posix/recursive_mutex.hpp b/include/boost/interprocess/sync/posix/recursive_mutex.hpp
index bcd056d..20e654e 100644
--- a/include/boost/interprocess/sync/posix/recursive_mutex.hpp
+++ b/include/boost/interprocess/sync/posix/recursive_mutex.hpp
@@ -42,7 +42,7 @@
 #include <errno.h>
 #include <boost/interprocess/sync/posix/pthread_helpers.hpp>
 #include <boost/interprocess/sync/posix/timepoint_to_timespec.hpp>
-#include <boost/interprocess/detail/timed_utils.hpp>
+#include <boost/interprocess/timed_utils.hpp>
 #include <boost/interprocess/exceptions.hpp>
 #ifndef BOOST_INTERPROCESS_POSIX_TIMEOUTS
 #  include <boost/interprocess/detail/os_thread_functions.hpp>
diff --git a/include/boost/interprocess/sync/posix/semaphore_wrapper.hpp b/include/boost/interprocess/sync/posix/semaphore_wrapper.hpp
index 77ba486..c77397a 100644
--- a/include/boost/interprocess/sync/posix/semaphore_wrapper.hpp
+++ b/include/boost/interprocess/sync/posix/semaphore_wrapper.hpp
@@ -23,7 +23,7 @@
 #include <boost/interprocess/creation_tags.hpp>
 #include <boost/interprocess/detail/os_file_functions.hpp>
 #include <boost/interprocess/detail/shared_dir_helpers.hpp>
-#include <boost/interprocess/detail/timed_utils.hpp>
+#include <boost/interprocess/timed_utils.hpp>
 #include <boost/interprocess/permissions.hpp>
 
 #include <fcntl.h>      //O_CREAT, O_*...
diff --git a/include/boost/interprocess/sync/posix/timepoint_to_timespec.hpp b/include/boost/interprocess/sync/posix/timepoint_to_timespec.hpp
index 5869133..6f5d795 100644
--- a/include/boost/interprocess/sync/posix/timepoint_to_timespec.hpp
+++ b/include/boost/interprocess/sync/posix/timepoint_to_timespec.hpp
@@ -21,7 +21,7 @@
 
 #include <boost/interprocess/detail/mpl.hpp>
 #include <boost/interprocess/detail/type_traits.hpp>
-#include <boost/interprocess/detail/timed_utils.hpp>
+#include <boost/interprocess/timed_utils.hpp>
 
 namespace boost {
 
diff --git a/include/boost/interprocess/sync/shm/named_condition.hpp b/include/boost/interprocess/sync/shm/named_condition.hpp
index c363d3d..c9e7550 100644
--- a/include/boost/interprocess/sync/shm/named_condition.hpp
+++ b/include/boost/interprocess/sync/shm/named_condition.hpp
@@ -33,6 +33,7 @@
 #include <boost/interprocess/sync/shm/named_creation_functor.hpp>
 #include <boost/interprocess/sync/named_mutex.hpp>
 #include <boost/interprocess/permissions.hpp>
+#include <boost/interprocess/timed_utils.hpp>
 #if defined (BOOST_INTERPROCESS_NAMED_MUTEX_USES_POSIX_SEMAPHORES)
    #include <boost/interprocess/sync/interprocess_mutex.hpp>
    #include <boost/interprocess/sync/scoped_lock.hpp>
diff --git a/include/boost/interprocess/sync/shm/named_condition_any.hpp b/include/boost/interprocess/sync/shm/named_condition_any.hpp
index dae4354..31f6213 100644
--- a/include/boost/interprocess/sync/shm/named_condition_any.hpp
+++ b/include/boost/interprocess/sync/shm/named_condition_any.hpp
@@ -35,6 +35,7 @@
 #include <boost/interprocess/permissions.hpp>
 #include <boost/interprocess/sync/interprocess_mutex.hpp>
 #include <boost/interprocess/sync/scoped_lock.hpp>
+#include <boost/interprocess/timed_utils.hpp>
 #include <boost/interprocess/sync/detail/condition_any_algorithm.hpp>
 
 //!\file
diff --git a/include/boost/interprocess/sync/shm/named_mutex.hpp b/include/boost/interprocess/sync/shm/named_mutex.hpp
index 1d25287..123f26a 100644
--- a/include/boost/interprocess/sync/shm/named_mutex.hpp
+++ b/include/boost/interprocess/sync/shm/named_mutex.hpp
@@ -30,6 +30,7 @@
 #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>
+#include <boost/interprocess/timed_utils.hpp>
 
 //!\file
 //!Describes a named mutex class for inter-process synchronization
diff --git a/include/boost/interprocess/sync/shm/named_recursive_mutex.hpp b/include/boost/interprocess/sync/shm/named_recursive_mutex.hpp
index 3902162..437588e 100644
--- a/include/boost/interprocess/sync/shm/named_recursive_mutex.hpp
+++ b/include/boost/interprocess/sync/shm/named_recursive_mutex.hpp
@@ -28,6 +28,7 @@
 #include <boost/interprocess/sync/interprocess_recursive_mutex.hpp>
 #include <boost/interprocess/sync/shm/named_creation_functor.hpp>
 #include <boost/interprocess/permissions.hpp>
+#include <boost/interprocess/timed_utils.hpp>
 
 //!\file
 //!Describes a named shm_named_recursive_mutex class for inter-process synchronization
diff --git a/include/boost/interprocess/sync/spin/condition.hpp b/include/boost/interprocess/sync/spin/condition.hpp
index 1416200..5eead3e 100644
--- a/include/boost/interprocess/sync/spin/condition.hpp
+++ b/include/boost/interprocess/sync/spin/condition.hpp
@@ -28,7 +28,7 @@
 #include <boost/interprocess/sync/scoped_lock.hpp>
 #include <boost/interprocess/exceptions.hpp>
 #include <boost/interprocess/detail/os_thread_functions.hpp>
-#include <boost/interprocess/detail/timed_utils.hpp>
+#include <boost/interprocess/timed_utils.hpp>
 #include <boost/interprocess/sync/spin/wait.hpp>
 #include <boost/move/utility_core.hpp>
 #include <boost/cstdint.hpp>
diff --git a/include/boost/interprocess/sync/spin/mutex.hpp b/include/boost/interprocess/sync/spin/mutex.hpp
index ce9f87f..2cccce2 100644
--- a/include/boost/interprocess/sync/spin/mutex.hpp
+++ b/include/boost/interprocess/sync/spin/mutex.hpp
@@ -26,6 +26,7 @@
 #include <boost/cstdint.hpp>
 #include <boost/interprocess/detail/os_thread_functions.hpp>
 #include <boost/interprocess/sync/detail/common_algorithms.hpp>
+#include <boost/interprocess/timed_utils.hpp>
 
 namespace boost {
 namespace interprocess {
diff --git a/include/boost/interprocess/sync/spin/recursive_mutex.hpp b/include/boost/interprocess/sync/spin/recursive_mutex.hpp
index 3a9e94a..a2a8557 100644
--- a/include/boost/interprocess/sync/spin/recursive_mutex.hpp
+++ b/include/boost/interprocess/sync/spin/recursive_mutex.hpp
@@ -44,6 +44,7 @@
 #include <boost/cstdint.hpp>
 #include <boost/interprocess/detail/os_thread_functions.hpp>
 #include <boost/interprocess/sync/spin/mutex.hpp>
+#include <boost/interprocess/timed_utils.hpp>
 #include <boost/assert.hpp>
 
 namespace boost {
diff --git a/include/boost/interprocess/sync/windows/condition.hpp b/include/boost/interprocess/sync/windows/condition.hpp
index 255cb69..fca3f1f 100644
--- a/include/boost/interprocess/sync/windows/condition.hpp
+++ b/include/boost/interprocess/sync/windows/condition.hpp
@@ -28,6 +28,7 @@
 #include <boost/interprocess/exceptions.hpp>
 #include <boost/interprocess/sync/windows/semaphore.hpp>
 #include <boost/interprocess/sync/windows/mutex.hpp>
+#include <boost/interprocess/timed_utils.hpp>
 #include <boost/interprocess/sync/detail/condition_algorithm_8a.hpp>
 
 
diff --git a/include/boost/interprocess/sync/windows/mutex.hpp b/include/boost/interprocess/sync/windows/mutex.hpp
index e1bd190..ce168f8 100644
--- a/include/boost/interprocess/sync/windows/mutex.hpp
+++ b/include/boost/interprocess/sync/windows/mutex.hpp
@@ -26,6 +26,7 @@
 #include <boost/interprocess/sync/windows/sync_utils.hpp>
 #include <boost/interprocess/sync/windows/winapi_mutex_wrapper.hpp>
 #include <boost/interprocess/exceptions.hpp>
+#include <boost/interprocess/timed_utils.hpp>
 
 
 namespace boost {
diff --git a/include/boost/interprocess/sync/windows/named_condition_any.hpp b/include/boost/interprocess/sync/windows/named_condition_any.hpp
index c00601c..f13a5f9 100644
--- a/include/boost/interprocess/sync/windows/named_condition_any.hpp
+++ b/include/boost/interprocess/sync/windows/named_condition_any.hpp
@@ -29,6 +29,7 @@
 #include <boost/interprocess/sync/windows/named_sync.hpp>
 #include <boost/interprocess/sync/windows/winapi_semaphore_wrapper.hpp>
 #include <boost/interprocess/sync/detail/condition_algorithm_8a.hpp>
+#include <boost/interprocess/timed_utils.hpp>
 
 namespace boost {
 namespace interprocess {
diff --git a/include/boost/interprocess/sync/windows/named_mutex.hpp b/include/boost/interprocess/sync/windows/named_mutex.hpp
index b3d3246..029eb61 100644
--- a/include/boost/interprocess/sync/windows/named_mutex.hpp
+++ b/include/boost/interprocess/sync/windows/named_mutex.hpp
@@ -28,6 +28,7 @@
 #include <boost/interprocess/sync/windows/winapi_mutex_wrapper.hpp>
 #include <boost/interprocess/errors.hpp>
 #include <boost/interprocess/exceptions.hpp>
+#include <boost/interprocess/timed_utils.hpp>
 #include <limits>
 
 namespace boost {
diff --git a/include/boost/interprocess/sync/windows/winapi_wrapper_common.hpp b/include/boost/interprocess/sync/windows/winapi_wrapper_common.hpp
index b95af82..5dcb0be 100644
--- a/include/boost/interprocess/sync/windows/winapi_wrapper_common.hpp
+++ b/include/boost/interprocess/sync/windows/winapi_wrapper_common.hpp
@@ -24,7 +24,7 @@
 #include <boost/interprocess/detail/win32_api.hpp>
 #include <boost/interprocess/errors.hpp>
 #include <boost/interprocess/exceptions.hpp>
-#include <boost/interprocess/detail/timed_utils.hpp>
+#include <boost/interprocess/timed_utils.hpp>
 #include <limits>
 
 namespace boost {
diff --git a/include/boost/interprocess/timed_utils.hpp b/include/boost/interprocess/timed_utils.hpp
new file mode 100644
index 0000000..768203d
--- /dev/null
+++ b/include/boost/interprocess/timed_utils.hpp
@@ -0,0 +1,189 @@
+////////////////////////////////////////////////////////////////////////////
+//
+// (C) Copyright Ion Gaztanaga 2023-2024. 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_TIMED_UTILS_HPP
+#define BOOST_INTERPROCESS_TIMED_UTILS_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/timed_utils.hpp>
+
+
+//!\file
+//!Describes some simple time-related utilities that can be used to call synchronization primitive and ipc methods that required
+//!waiting until the resource is signalled or a timeout expires.
+//!
+//! These utilities are provided for those users that want to avoid dependence on std::chrono or boost::chrono or boost::date_time
+//! and just want to implement simple portable waits.
+
+namespace boost {
+namespace interprocess {
+
+//!Describes a simple duration type with microsecond resolution that can be used with the ustime time-point utility to call timed functions
+//! of Boost.Interprocess' synchronization classes that expect a time-point (timed_wait, wait_until, timed_lock, lock_until...)
+class ustime;
+
+//!Describes a simple duration type with microsecond resolution that can be used with the ustime time-point utility to call timed functions
+//! of Boost.Interprocess' synchronization classes that expect a duration type (wait_for, lock_for...)
+class usduration
+{
+   public:
+   friend class ustime;
+
+   //!Constructs a duration type that stores microseconds from
+   //!the passed count
+   explicit usduration(boost::uint64_t microsecs = 0u)
+      : m_microsecs(microsecs)
+   {}
+
+   //!Returns the stored microsecond
+   //!count
+   boost::uint64_t get_microsecs() const
+   {  return m_microsecs;  }
+
+   bool operator < (const usduration &other) const
+   {  return m_microsecs < other.m_microsecs; }
+
+   bool operator > (const usduration &other) const
+   {  return m_microsecs > other.m_microsecs; }
+
+   bool operator <= (const usduration &other) const
+   {  return m_microsecs <= other.m_microsecs; }
+
+   bool operator >= (const usduration &other) const
+   {  return m_microsecs >= other.m_microsecs; }
+
+   private:
+   boost::uint64_t m_microsecs;
+};
+
+class ustime
+{
+   public:
+   //!Constructs a time point that is "microsecs" duration away
+   //!from the epoch of the system
+   explicit ustime(boost::uint64_t microsecs = 0u)
+      : m_microsecs(microsecs)
+   {}
+
+   ustime &operator += (const usduration &other)
+   {  m_microsecs += other.m_microsecs; return *this; }
+
+   ustime operator + (const usduration &other)
+   {  ustime r(*this); r += other; return r; }
+
+   ustime &operator -= (const usduration &other)
+   {  m_microsecs -= other.m_microsecs; return *this; }
+
+   ustime operator - (const usduration &other)
+   {  ustime r(*this); r -= other; return r; }
+
+   friend usduration operator - (const ustime &l, const ustime &r)
+   {  return usduration(l.m_microsecs - r.m_microsecs); }
+
+   bool operator < (const ustime &other) const
+   {  return m_microsecs < other.m_microsecs; }
+
+   bool operator > (const ustime &other) const
+   {  return m_microsecs > other.m_microsecs; }
+
+   bool operator <= (const ustime &other) const
+   {  return m_microsecs <= other.m_microsecs; }
+
+   bool operator >= (const ustime &other) const
+   {  return m_microsecs >= other.m_microsecs; }
+
+   //!Returns the stored count
+   //!that represents microseconds from epoch
+   boost::uint64_t get_microsecs() const
+   {  return m_microsecs;  }
+
+   private:
+   boost::uint64_t m_microsecs;
+};
+
+//!Utility that returns a duration from
+//!a seconds count
+inline usduration usduration_from_seconds(boost::uint64_t sec)
+{  return usduration(sec*uint64_t(1000000u));   }
+
+//!Utility that returns a duration from
+//!a milliseconds count
+inline usduration usduration_from_milliseconds(boost::uint64_t millisec)
+{  return usduration(millisec*1000u);   }
+
+//!Utility that returns a time_point in the future that is "msecs"
+//!milliseconds in the future from now.
+inline ustime ustime_delay_milliseconds(unsigned msecs)
+{
+   return ustime(ipcdetail::universal_time_u64_us()) + usduration(msecs*1000u);
+}
+
+#if !defined(BOOST_INTERPROCESS_DOXYGEN_INVOKED)
+
+namespace ipcdetail {
+
+template<>
+class microsec_clock<ustime>
+{
+   public:
+   typedef ustime time_point;
+
+   static ustime universal_time()
+   {  return ustime(universal_time_u64_us());   }
+};
+
+// duration_to_usduration
+
+template<class Duration>
+inline usduration duration_to_usduration(const Duration &d, typename enable_if_ptime_duration<Duration>::type* = 0)
+{
+   return usduration(static_cast<boost::uint64_t>(d.total_microseconds()));
+}
+
+template<class Duration>
+inline usduration duration_to_usduration(const Duration &d, typename enable_if_duration<Duration>::type* = 0)
+{
+   const double factor = double(Duration::period::num)*1000000.0/double(Duration::period::den);
+   return usduration(static_cast<boost::uint64_t>(double(d.count())*factor));
+}
+
+inline usduration duration_to_usduration(const usduration &d)
+{
+   return d;
+}
+
+// duration_to_ustime
+
+template<class Duration>
+inline ustime duration_to_ustime(const Duration &d)
+{
+   return microsec_clock<ustime>::universal_time() + (duration_to_usduration)(d);
+}
+
+
+}  //namespace ipcdetail {
+
+#endif   //#if !defined(BOOST_INTERPROCESS_DOXYGEN_INVOKED)
+
+}  //namespace interprocess {
+}  //namespace boost {
+
+#include <boost/interprocess/detail/config_end.hpp>
+
+#endif   //BOOST_INTERPROCESS_TIMED_UTILS_HPP
diff --git a/test/named_semaphore_test_helpers.hpp b/test/named_semaphore_test_helpers.hpp
index fdac630..fd9ee10 100644
--- a/test/named_semaphore_test_helpers.hpp
+++ b/test/named_semaphore_test_helpers.hpp
@@ -20,7 +20,7 @@
 #include "mutex_test_template.hpp"
 #include "get_process_id_name.hpp"
 #include <exception>
-#include <boost/interprocess/detail/timed_utils.hpp>
+#include <boost/interprocess/timed_utils.hpp>
 
 #include <exception>
 
diff --git a/test/semaphore_test_template.hpp b/test/semaphore_test_template.hpp
index 2b6df3a..39152f9 100644
--- a/test/semaphore_test_template.hpp
+++ b/test/semaphore_test_template.hpp
@@ -23,15 +23,16 @@
 
 #include <boost/interprocess/detail/config_begin.hpp>
 #include <boost/interprocess/exceptions.hpp>
+#include <boost/interprocess/timed_utils.hpp>
 #include "named_creation_template.hpp"
 #include "mutex_test_template.hpp"
 
-namespace boost { namespace interprocess { namespace test {
-
 #include <boost/interprocess/exceptions.hpp>
 #include "named_creation_template.hpp"
 #include "mutex_test_template.hpp"
 
+namespace boost { namespace interprocess { namespace test {
+
 static const std::size_t SemCount      = 1;
 static const std::size_t RecSemCount   = 100;
 
diff --git a/test/util.hpp b/test/util.hpp
index 68b1b4e..12da848 100644
--- a/test/util.hpp
+++ b/test/util.hpp
@@ -24,6 +24,7 @@
 #include <boost/interprocess/detail/config_begin.hpp>
 #include <boost/interprocess/sync/scoped_lock.hpp>
 #include <boost/interprocess/detail/os_thread_functions.hpp>
+#include <boost/interprocess/timed_utils.hpp>
 
 #if defined(BOOST_CLANG) || (defined(BOOST_GCC) && (BOOST_GCC >= 40600))
 #pragma GCC diagnostic push
@@ -37,10 +38,10 @@
 #  endif
 #endif
 
-#include <boost/date_time/posix_time/posix_time_types.hpp>
 #if BOOST_CXX_VERSION >= 201103L
 #define BOOST_CHRONO_HEADER_ONLY
 #include <boost/chrono/system_clocks.hpp>
+#include <boost/date_time/posix_time/posix_time_types.hpp>
 #endif
 
 #include <boost/version.hpp>
@@ -57,6 +58,9 @@ namespace boost {
 namespace interprocess {
 namespace test {
 
+// ptime_delay_ms + ptime_ms
+
+#if BOOST_CXX_VERSION >= 201103L
 inline boost::posix_time::ptime ptime_delay_ms(unsigned msecs)
 {
    using namespace boost::posix_time;
@@ -68,10 +72,19 @@ inline boost::posix_time::ptime ptime_delay_ms(unsigned msecs)
 inline boost::posix_time::time_duration ptime_ms(unsigned msecs)
 {
    using namespace boost::posix_time;
-   int count = static_cast<int>(double(msecs)*
-               (double(time_duration::ticks_per_second())/double(1000.0)));
+   int count = static_cast<int>(double(msecs) *
+      (double(time_duration::ticks_per_second()) / double(1000.0)));
    return time_duration(0, 0, 0, count);
 }
+#else
+   inline ustime ptime_delay_ms(unsigned msecs)
+   {  return ustime_delay_milliseconds(msecs); }
+
+   inline usduration ptime_ms(unsigned msecs)
+   {  return usduration_from_milliseconds(msecs); }
+#endif
+
+// boost_systemclock_delay_ms + boost_systemclock_ms
 
 #if BOOST_CXX_VERSION >= 201103L
    inline boost::chrono::system_clock::time_point boost_systemclock_delay_ms(unsigned msecs)
@@ -80,14 +93,15 @@ inline boost::posix_time::time_duration ptime_ms(unsigned msecs)
    inline boost::chrono::milliseconds boost_systemclock_ms(unsigned msecs)
    {  return boost::chrono::milliseconds(msecs);  }
 #else
-   inline boost::posix_time::ptime boost_systemclock_delay_ms(unsigned msecs)
-   {  return ptime_delay_ms(msecs);  }
-
-   inline boost::posix_time::time_duration boost_systemclock_ms(unsigned msecs)
-   {  return ptime_ms(msecs);  }
+   inline ustime boost_systemclock_delay_ms(unsigned msecs)
+   {  return ustime_delay_milliseconds(msecs); }
 
+   inline usduration boost_systemclock_ms(unsigned msecs)
+   {  return usduration_from_milliseconds(msecs); }
 #endif 
 
+// std_systemclock_delay_ms + std_systemclock_ms
+
 #if !defined(BOOST_NO_CXX11_HDR_CHRONO)
    //Use std chrono if available
    inline std::chrono::system_clock::time_point std_systemclock_delay_ms(unsigned msecs)
@@ -103,15 +117,15 @@ inline boost::posix_time::time_duration ptime_ms(unsigned msecs)
 
    inline boost::chrono::milliseconds std_systemclock_ms(unsigned msecs)
    {  return boost_systemclock_ms(msecs);  }
-
 #else
-   inline boost::posix_time::ptime std_systemclock_delay_ms(unsigned msecs)
-   {  return ptime_delay_ms(msecs);  }
+   inline ustime std_systemclock_delay_ms(unsigned msecs)
+   {  return ustime_delay_milliseconds(msecs); }
 
-   inline boost::posix_time::time_duration std_systemclock_ms(unsigned msecs)
-   {  return ptime_ms(msecs);  }
+   inline usduration std_systemclock_ms(unsigned msecs)
+   {  return usduration_from_milliseconds(msecs); }
 #endif
 
+// thread_adapter + data
 
 template <typename P>
 class thread_adapter