1 | // -*- c++ -*- |
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2 | #ifndef TIME_MEASURE_H |
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3 | #define TIME_MEASURE_H |
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4 | |
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5 | #include <sys/time.h> |
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6 | #include <sys/times.h> |
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7 | #include <fstream> |
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8 | #include <iostream> |
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9 | |
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10 | double currTime() { |
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11 | timeval tv; |
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12 | //timezone tz; |
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13 | gettimeofday(&tv, 0); |
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14 | return double(tv.tv_sec)+double(tv.tv_usec)/1000000.0; |
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15 | } |
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16 | |
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17 | class TimeStamp |
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18 | { |
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19 | tms ts; |
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20 | double real_time; |
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21 | |
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22 | public: |
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23 | |
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24 | tms &getTms() {return ts;} |
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25 | const tms &getTms() const {return ts;} |
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26 | double getRealTime() const {return real_time;} |
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27 | void stamp() |
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28 | { |
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29 | timeval tv; |
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30 | times(&ts); |
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31 | gettimeofday(&tv, 0);real_time=tv.tv_sec+double(tv.tv_usec)/1e6; |
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32 | } |
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33 | |
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34 | TimeStamp() |
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35 | { ts.tms_utime=ts.tms_stime=ts.tms_cutime=ts.tms_cstime=0; real_time=0;} |
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36 | |
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37 | TimeStamp(void *) { stamp();} |
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38 | |
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39 | TimeStamp &operator+=(const TimeStamp &b) |
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40 | { |
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41 | ts.tms_utime+=b.ts.tms_utime; |
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42 | ts.tms_stime+=b.ts.tms_stime; |
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43 | ts.tms_cutime+=b.ts.tms_cutime; |
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44 | ts.tms_cstime+=b.ts.tms_cstime; |
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45 | real_time+=b.real_time; |
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46 | return *this; |
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47 | } |
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48 | TimeStamp operator+(const TimeStamp &b) const |
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49 | { |
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50 | TimeStamp t(*this); |
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51 | return t+=b; |
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52 | } |
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53 | TimeStamp &operator-=(const TimeStamp &b) |
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54 | { |
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55 | ts.tms_utime-=b.ts.tms_utime; |
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56 | ts.tms_stime-=b.ts.tms_stime; |
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57 | ts.tms_cutime-=b.ts.tms_cutime; |
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58 | ts.tms_cstime-=b.ts.tms_cstime; |
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59 | real_time-=b.real_time; |
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60 | return *this; |
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61 | } |
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62 | TimeStamp operator-(const TimeStamp &b) const |
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63 | { |
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64 | TimeStamp t(*this); |
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65 | return t-=b; |
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66 | } |
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67 | |
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68 | TimeStamp Ellapsed() const |
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69 | { |
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70 | TimeStamp t(NULL); |
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71 | return t-*this; |
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72 | } |
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73 | |
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74 | friend std::ostream& operator<<(std::ostream& os,const TimeStamp &t); |
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75 | |
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76 | double getUserTime() const |
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77 | { |
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78 | long cls = sysconf(_SC_CLK_TCK); |
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79 | return double(ts.tms_utime)/cls; |
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80 | } |
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81 | double getSystemTime() const |
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82 | { |
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83 | long cls = sysconf(_SC_CLK_TCK); |
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84 | return double(ts.tms_stime)/cls; |
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85 | } |
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86 | double getCUserTime() const |
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87 | { |
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88 | long cls = sysconf(_SC_CLK_TCK); |
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89 | return double(ts.tms_cutime)/cls; |
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90 | } |
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91 | double getCSystemTime() const |
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92 | { |
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93 | long cls = sysconf(_SC_CLK_TCK); |
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94 | return double(ts.tms_cstime)/cls; |
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95 | } |
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96 | }; |
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97 | |
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98 | class Timer |
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99 | { |
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100 | TimeStamp start_time; |
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101 | |
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102 | public: |
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103 | void reset() {start_time.stamp();} |
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104 | Timer() {reset();} |
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105 | |
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106 | operator TimeStamp () |
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107 | { |
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108 | TimeStamp t; |
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109 | t.stamp(); |
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110 | return t-start_time; |
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111 | } |
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112 | }; |
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113 | |
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114 | inline std::ostream& operator<<(std::ostream& os,const TimeStamp &t) |
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115 | { |
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116 | long cls = sysconf(_SC_CLK_TCK); |
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117 | os << "u: " << double(t.getTms().tms_utime)/cls << |
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118 | "s, s: " << double(t.getTms().tms_stime)/cls << |
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119 | "s, cu: " << double(t.getTms().tms_cutime)/cls << |
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120 | "s, cs: " << double(t.getTms().tms_cstime)/cls << |
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121 | "s, real: " << t.getRealTime() << "s"; |
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122 | return os; |
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123 | } |
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124 | |
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125 | #endif //TIME_MEASURE_H |
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