[1] | 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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[4] | 16 | #include <stdint.h> |
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[1] | 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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[4] | 41 | extern uint64_t nb_cycles; |
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[1] | 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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[4] | 54 | uint64_t time; |
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| 55 | enum sc_time_unit unit; |
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[1] | 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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[4] | 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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[1] | 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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[4] | 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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[1] | 105 | } // end of namespace sc_core |
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| 106 | |
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| 107 | #endif /* __SC_TIME_H__ */ |
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