1 #ifndef KMP_STATS_TIMING_H
2 #define KMP_STATS_TIMING_H
20 #if KMP_HAVE_X86INTRIN_H
21 #include <x86intrin.h>
24 class tsc_tick_count {
29 class tsc_interval_t {
31 explicit tsc_interval_t(int64_t _value) : value(_value) {}
34 tsc_interval_t() : value(0) {}
35 #if KMP_HAVE_TICK_TIME
36 double seconds()
const;
38 double ticks()
const {
return double(value); }
39 int64_t getValue()
const {
return value; }
40 tsc_interval_t &operator=(int64_t nvalue) {
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
57 : my_count(static_cast<int64_t>(__builtin_readcyclecounter())) {}
58 #elif KMP_HAVE___RDTSC
59 tsc_tick_count() : my_count(static_cast<int64_t>(__rdtsc())) {}
61 #error Must have high resolution timer defined
63 tsc_tick_count(int64_t value) : my_count(value) {}
64 int64_t getValue()
const {
return my_count; }
65 tsc_tick_count later(tsc_tick_count
const other)
const {
66 return my_count > other.my_count ? (*this) : other;
68 tsc_tick_count earlier(tsc_tick_count
const other)
const {
69 return my_count < other.my_count ? (*this) : other;
71 #if KMP_HAVE_TICK_TIME
72 static double tick_time();
74 static tsc_tick_count now() {
75 return tsc_tick_count();
77 friend tsc_tick_count::tsc_interval_t operator-(
const tsc_tick_count &t1,
78 const tsc_tick_count &t0);
81 inline tsc_tick_count::tsc_interval_t operator-(
const tsc_tick_count &t1,
82 const tsc_tick_count &t0) {
83 return tsc_tick_count::tsc_interval_t(t1.my_count - t0.my_count);
86 inline tsc_tick_count::tsc_interval_t
87 operator-(
const tsc_tick_count::tsc_interval_t &i1,
88 const tsc_tick_count::tsc_interval_t &i0) {
89 return tsc_tick_count::tsc_interval_t(i1.value - i0.value);
92 inline tsc_tick_count::tsc_interval_t &
93 operator+=(tsc_tick_count::tsc_interval_t &i1,
94 const tsc_tick_count::tsc_interval_t &i0) {
99 #if KMP_HAVE_TICK_TIME
100 inline double tsc_tick_count::tsc_interval_t::seconds()
const {
101 return value * tick_time();
105 extern std::string formatSI(
double interval,
int width,
char unit);
107 inline std::string formatSeconds(
double interval,
int width) {
108 return formatSI(interval, width,
'S');
111 inline std::string formatTicks(
double interval,
int width) {
112 return formatSI(interval, width,
'T');
115 #endif // KMP_STATS_TIMING_H