| #ifndef KMP_STATS_TIMING_H |
| #define KMP_STATS_TIMING_H |
| |
| /** @file kmp_stats_timing.h |
| * Access to real time clock and timers. |
| */ |
| |
| |
| //===----------------------------------------------------------------------===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is dual licensed under the MIT and the University of Illinois Open |
| // Source Licenses. See LICENSE.txt for details. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| |
| |
| #include <stdint.h> |
| #include <string> |
| #include <limits> |
| #include "kmp_os.h" |
| |
| class tsc_tick_count { |
| private: |
| int64_t my_count; |
| |
| public: |
| class tsc_interval_t { |
| int64_t value; |
| explicit tsc_interval_t(int64_t _value) : value(_value) {} |
| public: |
| tsc_interval_t() : value(0) {}; // Construct 0 time duration |
| double seconds() const; // Return the length of a time interval in seconds |
| double ticks() const { return double(value); } |
| int64_t getValue() const { return value; } |
| |
| friend class tsc_tick_count; |
| |
| friend tsc_interval_t operator-( |
| const tsc_tick_count t1, const tsc_tick_count t0); |
| }; |
| |
| tsc_tick_count() : my_count(static_cast<int64_t>(__rdtsc())) {}; |
| tsc_tick_count(int64_t value) : my_count(value) {}; |
| int64_t getValue() const { return my_count; } |
| tsc_tick_count later (tsc_tick_count const other) const { |
| return my_count > other.my_count ? (*this) : other; |
| } |
| tsc_tick_count earlier(tsc_tick_count const other) const { |
| return my_count < other.my_count ? (*this) : other; |
| } |
| static double tick_time(); // returns seconds per cycle (period) of clock |
| static tsc_tick_count now() { return tsc_tick_count(); } // returns the rdtsc register value |
| friend tsc_tick_count::tsc_interval_t operator-(const tsc_tick_count t1, const tsc_tick_count t0); |
| }; |
| |
| inline tsc_tick_count::tsc_interval_t operator-(const tsc_tick_count t1, const tsc_tick_count t0) |
| { |
| return tsc_tick_count::tsc_interval_t( t1.my_count-t0.my_count ); |
| } |
| |
| inline double tsc_tick_count::tsc_interval_t::seconds() const |
| { |
| return value*tick_time(); |
| } |
| |
| extern std::string formatSI(double interval, int width, char unit); |
| |
| inline std::string formatSeconds(double interval, int width) |
| { |
| return formatSI(interval, width, 'S'); |
| } |
| |
| inline std::string formatTicks(double interval, int width) |
| { |
| return formatSI(interval, width, 'T'); |
| } |
| |
| class timePair |
| { |
| tsc_tick_count KMP_ALIGN_CACHE start; |
| tsc_tick_count end; |
| |
| public: |
| timePair() : start(-std::numeric_limits<int64_t>::max()), end(-std::numeric_limits<int64_t>::max()) {} |
| tsc_tick_count get_start() const { return start; } |
| tsc_tick_count get_end() const { return end; } |
| tsc_tick_count * get_startp() { return &start; } |
| tsc_tick_count * get_endp() { return &end; } |
| |
| void markStart() { start = tsc_tick_count::now(); } |
| void markEnd() { end = tsc_tick_count::now(); } |
| void set_start(tsc_tick_count s) { start = s; } |
| void set_end (tsc_tick_count e) { end = e; } |
| |
| tsc_tick_count::tsc_interval_t duration() const { return end-start; } |
| std::string format() const; |
| |
| }; |
| |
| extern tsc_tick_count::tsc_interval_t computeLastInLastOutInterval(timePair * times, int nTimes); |
| #endif // KMP_STATS_TIMING_H |