extl/win/counter/tick_counter.h

   1 /* ///////////////////////////////////////////////////////////////////////
   2  * File:                tick_counter.h
   3  *
   4  * Created:             08.02.17
   5  * Updated:             08.05.05
   6  *
   7  * Brief: tick_counter class - precision: ms
   8  *
   9  * [<Home>]
  10  * Copyright (c) 2008-2020, Waruqi All rights reserved.
  11  * //////////////////////////////////////////////////////////////////// */
  12 #ifndef EXTL_PLATFORM_WIN_TICK_COUNTER_H
  13 #define EXTL_PLATFORM_WIN_TICK_COUNTER_H
  14
  15 /*!\file tick_counter.h
  16  * \brief tick_counter class - precision: ms
  17  */
  18 #ifndef __cplusplus
  19 #       error tick_counter.h need be supported by c++.
  20 #endif
  21
  22 /* ///////////////////////////////////////////////////////////////////////
  23  * Includes
  24  */
  25 #include "../win.h"
  26
  27 /* ///////////////////////////////////////////////////////////////////////
  28  * ::extl::platform::win namespace
  29  */
  30 EXTL_WIN_BEGIN_WHOLE_NAMESPACE
  31
  32 /*!\brief tick_counter class
  33  * \ingroup extl_group_counter
  34  */
  35 class tick_counter
  36 {
  37         /// \name Constructors
  38         /// @{
  39         public :
  40                 tick_counter();
  41                 ~tick_counter();
  42         /// @}
  43
  44         /// \name Types
  45         /// @{
  46         private:
  47                 typedef tick_counter            class_type;
  48
  49 #ifdef EXTL_64BIT_INT_SUPPORT
  50                 typedef e_uint64_t                      interval_type;
  51 #else
  52                 typedef e_uint32_t                      interval_type;
  53 #endif
  54                 typedef DWORD                           size_type;
  55         /// @}
  56
  57         /// \name Operations
  58         /// @{
  59         public:
  60                 inline void begin();
  61                 inline void end();
  62         /// @}
  63
  64         /// \name Attributes
  65         /// @{
  66         public:
  67                 inline interval_type count() const;
  68                 inline interval_type seconds() const;
  69                 inline interval_type ms() const;
  70                 inline interval_type us() const;
  71         /// @}
  72
  73         /// \name Members
  74         /// @{
  75         private:
  76                 size_type m_begin;
  77                 size_type m_end;
  78         /// @}
  79 };
  80
  81 /* ///////////////////////////////////////////////////////////////////////
  82  * Class implementation
  83  */
  84 inline tick_counter::tick_counter()
  85 :m_begin(0), m_end(0)
  86 {
  87 }
  88
  89 inline tick_counter::~tick_counter()
  90 {
  91 }
  92 inline void tick_counter::begin()
  93 {
  94         m_begin = ::GetTickCount();
  95 }
  96
  97 inline void tick_counter::end()
  98 {
  99         m_end = ::GetTickCount();
 100 }
 101 inline tick_counter::interval_type tick_counter::count() const
 102 {
 103         EXTL_ASSERT(m_end >= m_begin);
 104         return static_cast<interval_type>(m_end - m_begin);
 105 }
 106 inline tick_counter::interval_type tick_counter::seconds() const
 107 {
 108         return count() / interval_type(1000);
 109 }
 110 inline tick_counter::interval_type tick_counter::ms() const
 111 {
 112         return count();
 113 }
 114 inline tick_counter::interval_type tick_counter::us() const
 115 {
 116         return count() * interval_type(1000);
 117 }
 118
 119 /* ///////////////////////////////////////////////////////////////////////
 120  * Unit-testing
 121  */
 122 #ifdef EXTL_COUNTER_TICK_COUNTER_TEST_ENABLE
 123 #       include "unit_test/tick_counter_test.h"
 124 #endif
 125
 126 /* ///////////////////////////////////////////////////////////////////////
 127  * ::extl::platform::win namespace
 128  */
 129 EXTL_WIN_END_WHOLE_NAMESPACE
 130
 131 /* //////////////////////////////////////////////////////////////////// */
 132 #endif /* EXTL_PLATFORM_WIN_TICK_COUNTER_H */
 133 /* //////////////////////////////////////////////////////////////////// */