1 #ifndef KMP_STATS_TIMING_H 2 #define KMP_STATS_TIMING_H 24 #if KMP_HAVE_X86INTRIN_H 25 # include <x86intrin.h> 28 class tsc_tick_count {
33 class tsc_interval_t {
35 explicit tsc_interval_t(int64_t _value) : value(_value) {}
37 tsc_interval_t() : value(0) {};
38 #if KMP_HAVE_TICK_TIME 39 double seconds()
const;
41 double ticks()
const {
return double(value); }
42 int64_t getValue()
const {
return value; }
43 tsc_interval_t& operator=(int64_t nvalue) { value = nvalue;
return *
this; }
45 friend class tsc_tick_count;
47 friend tsc_interval_t operator-(
const tsc_tick_count& t1,
48 const tsc_tick_count& t0);
49 friend tsc_interval_t operator-(
const tsc_tick_count::tsc_interval_t& i1,
50 const tsc_tick_count::tsc_interval_t& i0);
51 friend tsc_interval_t& operator+=(tsc_tick_count::tsc_interval_t& i1,
52 const tsc_tick_count::tsc_interval_t& i0);
55 #if KMP_HAVE___BUILTIN_READCYCLECOUNTER 56 tsc_tick_count() : my_count(static_cast<int64_t>(__builtin_readcyclecounter())) {}
57 #elif KMP_HAVE___RDTSC 58 tsc_tick_count() : my_count(static_cast<int64_t>(__rdtsc())) {};
60 # error Must have high resolution timer defined 62 tsc_tick_count(int64_t value) : my_count(value) {};
63 int64_t getValue()
const {
return my_count; }
64 tsc_tick_count later (tsc_tick_count
const other)
const {
65 return my_count > other.my_count ? (*this) : other;
67 tsc_tick_count earlier(tsc_tick_count
const other)
const {
68 return my_count < other.my_count ? (*this) : other;
70 #if KMP_HAVE_TICK_TIME 71 static double tick_time();
73 static tsc_tick_count now() {
return tsc_tick_count(); }
74 friend tsc_tick_count::tsc_interval_t operator-(
const tsc_tick_count& t1,
const tsc_tick_count& t0);
77 inline tsc_tick_count::tsc_interval_t operator-(
const tsc_tick_count& t1,
const tsc_tick_count& t0)
79 return tsc_tick_count::tsc_interval_t( t1.my_count-t0.my_count );
82 inline tsc_tick_count::tsc_interval_t operator-(
const tsc_tick_count::tsc_interval_t& i1,
const tsc_tick_count::tsc_interval_t& i0)
84 return tsc_tick_count::tsc_interval_t( i1.value-i0.value );
87 inline tsc_tick_count::tsc_interval_t& operator+=(tsc_tick_count::tsc_interval_t& i1,
const tsc_tick_count::tsc_interval_t& i0)
93 #if KMP_HAVE_TICK_TIME 94 inline double tsc_tick_count::tsc_interval_t::seconds()
const 96 return value*tick_time();
100 extern std::string formatSI(
double interval,
int width,
char unit);
102 inline std::string formatSeconds(
double interval,
int width)
104 return formatSI(interval, width,
'S');
107 inline std::string formatTicks(
double interval,
int width)
109 return formatSI(interval, width,
'T');
112 #endif // KMP_STATS_TIMING_H