From 0d9ebfc820f8a8af8daa3abbd30e49d53bf9f2d2 Mon Sep 17 00:00:00 2001
From: Andrey Semashev <andrey.semashev@gmail.com>
Date: Thu, 26 Jul 2012 08:08:06 +0000
Subject: [PATCH] Fixed compilation when Boost.Chrono is disabled by user.

[SVN r79753]
---
 include/boost/thread/win32/basic_timed_mutex.hpp | 2 ++
 include/boost/thread/win32/shared_mutex.hpp      | 5 ++++-
 2 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/include/boost/thread/win32/basic_timed_mutex.hpp b/include/boost/thread/win32/basic_timed_mutex.hpp
index 340f1200..30580e7c 100644
--- a/include/boost/thread/win32/basic_timed_mutex.hpp
+++ b/include/boost/thread/win32/basic_timed_mutex.hpp
@@ -159,6 +159,7 @@ namespace boost
                 return timed_lock(system_time(timeout));
             }
 
+#ifdef BOOST_THREAD_USES_CHRONO
             template <class Rep, class Period>
             bool try_lock_for(const chrono::duration<Rep, Period>& rel_time)
             {
@@ -209,6 +210,7 @@ namespace boost
               }
               return true;
             }
+#endif
 
             void unlock()
             {
diff --git a/include/boost/thread/win32/shared_mutex.hpp b/include/boost/thread/win32/shared_mutex.hpp
index 78b6001d..fef2d5ba 100644
--- a/include/boost/thread/win32/shared_mutex.hpp
+++ b/include/boost/thread/win32/shared_mutex.hpp
@@ -221,6 +221,7 @@ namespace boost
             }
         }
 
+#ifdef BOOST_THREAD_USES_CHRONO
         template <class Rep, class Period>
         bool try_lock_shared_for(const chrono::duration<Rep, Period>& rel_time)
         {
@@ -327,6 +328,7 @@ namespace boost
             BOOST_ASSERT(res==0);
           }
         }
+#endif
 
         void unlock_shared()
         {
@@ -490,7 +492,7 @@ namespace boost
             }
         }
 
-
+#ifdef BOOST_THREAD_USES_CHRONO
         template <class Rep, class Period>
         bool try_lock_for(const chrono::duration<Rep, Period>& rel_time)
         {
@@ -598,6 +600,7 @@ namespace boost
             BOOST_ASSERT(wait_res<2);
           }
         }
+#endif
 
         void unlock()
         {