Kokkos Core Kernels Package  Version of the Day
Kokkos_Timer.hpp
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43 
44 #ifndef KOKKOS_TIMER_HPP
45 #define KOKKOS_TIMER_HPP
46 
47 #include <stddef.h>
48 
49 #ifdef _MSC_VER
50 #undef KOKKOS_USE_LIBRT
51 #include <gettimeofday.c>
52 #else
53 #ifdef KOKKOS_USE_LIBRT
54 #include <ctime>
55 #else
56 #include <sys/time.h>
57 #endif
58 #endif
59 
60 namespace Kokkos {
61 
64 class Timer {
65 private:
66  #ifdef KOKKOS_USE_LIBRT
67  struct timespec m_old;
68  #else
69  struct timeval m_old ;
70  #endif
71  Timer( const Timer & );
72  Timer & operator = ( const Timer & );
73 public:
74 
75  inline
76  void reset() {
77  #ifdef KOKKOS_USE_LIBRT
78  clock_gettime(CLOCK_REALTIME, &m_old);
79  #else
80  gettimeofday( & m_old , ((struct timezone *) NULL ) );
81  #endif
82  }
83 
84  inline
85  ~Timer() {}
86 
87  inline
88  Timer() { reset(); }
89 
90  inline
91  double seconds() const
92  {
93  #ifdef KOKKOS_USE_LIBRT
94  struct timespec m_new;
95  clock_gettime(CLOCK_REALTIME, &m_new);
96 
97  return ( (double) ( m_new.tv_sec - m_old.tv_sec ) ) +
98  ( (double) ( m_new.tv_nsec - m_old.tv_nsec ) * 1.0e-9 );
99  #else
100  struct timeval m_new ;
101 
102  ::gettimeofday( & m_new , ((struct timezone *) NULL ) );
103 
104  return ( (double) ( m_new.tv_sec - m_old.tv_sec ) ) +
105  ( (double) ( m_new.tv_usec - m_old.tv_usec ) * 1.0e-6 );
106  #endif
107  }
108 };
109 
110 } // namespace Kokkos
111 
112 #endif /* #ifndef KOKKOS_TIMER_HPP */
Time since construction.