1 | /*------------------------------------------------------------\ |
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2 | | | |
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3 | | Tool : systemcass | |
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4 | | | |
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5 | | File : sc_time.h | |
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6 | | | |
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7 | | Author : Buchmann Richard | |
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8 | | | |
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9 | | Date : 09_07_2004 | |
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10 | | | |
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11 | \------------------------------------------------------------*/ |
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12 | #ifndef __SC_TIME_H__ |
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13 | #define __SC_TIME_H__ |
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14 | |
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15 | #include <string> |
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16 | #include <stdint.h> |
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17 | |
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18 | namespace sc_core { |
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19 | |
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20 | // ---------------------------------------------------------------------------- |
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21 | // ENUM : sc_time_unit |
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22 | // |
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23 | // Enumeration of time units. |
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24 | // ---------------------------------------------------------------------------- |
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25 | |
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26 | enum sc_time_unit |
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27 | { |
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28 | SC_FS = 0, |
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29 | SC_PS, |
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30 | SC_NS, |
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31 | SC_US, |
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32 | SC_MS, |
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33 | SC_SEC |
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34 | }; |
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35 | |
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36 | // |
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37 | class sc_time; |
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38 | extern const sc_time SC_ZERO_TIME; |
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39 | extern sc_time SC_CURRENT_TIME; |
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40 | |
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41 | extern uint64_t nb_cycles; |
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42 | |
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43 | inline double sc_simulation_time() // in default time units |
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44 | { |
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45 | return (double)nb_cycles; |
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46 | } |
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47 | |
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48 | const sc_time& sc_time_stamp (); |
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49 | |
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50 | // |
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51 | class sc_time |
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52 | { |
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53 | friend const sc_time &sc_time_stamp (); |
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54 | uint64_t time; |
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55 | enum sc_time_unit unit; |
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56 | public: |
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57 | sc_time (double val, sc_time_unit tu); |
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58 | sc_time (const sc_time& = SC_ZERO_TIME); |
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59 | |
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60 | sc_time& operator= (const sc_time &); |
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61 | |
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62 | uint64_t value () const { return time;} |
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63 | inline double to_double () const; |
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64 | inline double to_seconds() const; |
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65 | inline operator double () const { return to_double ();} |
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66 | const std::string to_string () const; |
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67 | }; |
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68 | |
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69 | inline const sc_time& sc_time_stamp () // in default time units |
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70 | { |
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71 | SC_CURRENT_TIME.time = nb_cycles; |
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72 | return SC_CURRENT_TIME;// = sc_time (nb_cycles, SC_NS); |
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73 | } |
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74 | |
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75 | double |
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76 | sc_time::to_double () const |
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77 | { |
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78 | double fact = 1; |
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79 | switch(unit) { |
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80 | case SC_FS: fact = 1e-6; break; |
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81 | case SC_PS: fact = 1e-3; break; |
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82 | case SC_NS: fact = 1; break; |
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83 | case SC_US: fact = 1e3; break; |
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84 | case SC_MS: fact = 1e6; break; |
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85 | case SC_SEC: fact = 1e9; break; |
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86 | } |
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87 | return (double)time * fact; |
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88 | } |
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89 | |
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90 | double |
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91 | sc_time::to_seconds() const |
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92 | { |
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93 | double fact = 1; |
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94 | switch(unit) { |
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95 | case SC_FS: fact = 1e-15; break; |
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96 | case SC_PS: fact = 1e-12; break; |
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97 | case SC_NS: fact = 1e-9; break; |
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98 | case SC_US: fact = 1e-6; break; |
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99 | case SC_MS: fact = 1e-3; break; |
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100 | case SC_SEC: fact = 1; break; |
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101 | } |
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102 | return (double)time * fact; |
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103 | } |
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104 | |
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105 | } // end of namespace sc_core |
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106 | |
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107 | #endif /* __SC_TIME_H__ */ |
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