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diff --git a/boost/chrono/detail/inlined/posix/thread_clock.hpp b/boost/chrono/detail/inlined/posix/thread_clock.hpp
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+// boost thread_clock.cpp -----------------------------------------------------------//
+
+// Copyright Beman Dawes 1994, 2006, 2008
+// Copyright Vicente J. Botet Escriba 2009-2011
+
+// Distributed under the Boost Software License, Version 1.0.
+// See http://www.boost.org/LICENSE_1_0.txt
+
+// See http://www.boost.org/libs/chrono for documentation.
+
+//--------------------------------------------------------------------------------------//
+
+#include <boost/chrono/config.hpp>
+#include <boost/chrono/thread_clock.hpp>
+#include <cassert>
+
+# include <sys/times.h>
+# include <unistd.h>
+
+namespace boost { namespace chrono {
+
+ thread_clock::time_point thread_clock::now( ) BOOST_NOEXCEPT
+ {
+ struct timespec ts;
+#if defined CLOCK_THREAD_CPUTIME_ID
+ // get the timespec associated to the thread clock
+ if ( ::clock_gettime( CLOCK_THREAD_CPUTIME_ID, &ts ) )
+#else
+ // get the current thread
+ pthread_t pth=pthread_self();
+ // get the clock_id associated to the current thread
+ clockid_t clock_id;
+ pthread_getcpuclockid(pth, &clock_id);
+ // get the timespec associated to the thread clock
+ if ( ::clock_gettime( clock_id, &ts ) )
+#endif
+ {
+ BOOST_ASSERT(0 && "Boost::Chrono - Internal Error");
+ }
+
+ // transform to nanoseconds
+ return time_point(duration(
+ static_cast<thread_clock::rep>( ts.tv_sec ) * 1000000000 + ts.tv_nsec));
+
+ }
+
+#if !defined BOOST_CHRONO_DONT_PROVIDE_HYBRID_ERROR_HANDLING
+ thread_clock::time_point thread_clock::now( system::error_code & ec )
+ {
+ struct timespec ts;
+#if defined CLOCK_THREAD_CPUTIME_ID
+ // get the timespec associated to the thread clock
+ if ( ::clock_gettime( CLOCK_THREAD_CPUTIME_ID, &ts ) )
+#else
+ // get the current thread
+ pthread_t pth=pthread_self();
+ // get the clock_id associated to the current thread
+ clockid_t clock_id;
+ pthread_getcpuclockid(pth, &clock_id);
+ // get the timespec associated to the thread clock
+ if ( ::clock_gettime( clock_id, &ts ) )
+#endif
+ {
+ if (BOOST_CHRONO_IS_THROWS(ec))
+ {
+ boost::throw_exception(
+ system::system_error(
+ errno,
+ BOOST_CHRONO_SYSTEM_CATEGORY,
+ "chrono::thread_clock" ));
+ }
+ else
+ {
+ ec.assign( errno, BOOST_CHRONO_SYSTEM_CATEGORY );
+ return time_point();
+ }
+ }
+ if (!BOOST_CHRONO_IS_THROWS(ec))
+ {
+ ec.clear();
+ }
+ // transform to nanoseconds
+ return time_point(duration(
+ static_cast<thread_clock::rep>( ts.tv_sec ) * 1000000000 + ts.tv_nsec));
+
+ }
+#endif
+} }