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Diffstat (limited to 'src/lib/netlist/plib/pchrono.h')
-rw-r--r--src/lib/netlist/plib/pchrono.h34
1 files changed, 27 insertions, 7 deletions
diff --git a/src/lib/netlist/plib/pchrono.h b/src/lib/netlist/plib/pchrono.h
index 711e8908dfd..d6e98134f47 100644
--- a/src/lib/netlist/plib/pchrono.h
+++ b/src/lib/netlist/plib/pchrono.h
@@ -31,8 +31,32 @@ namespace chrono {
#if defined(__x86_64__) && !defined(_clang__) && !defined(_MSC_VER) && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ > 6))
+ template <typename T, typename R>
+ struct base_ticks
+ {
+ using ret_type = R;
+ static ret_type per_second()
+ {
+ static ret_type persec = 0;
+ if (persec == 0)
+ {
+ ret_type x = 0;
+ system_ticks::type t = system_ticks::start();
+ system_ticks::type e;
+ x = - T :: start();
+ do {
+ e = system_ticks::stop();
+ } while (e - t < system_ticks::per_second() / 100 );
+ x += T :: stop();
+ persec = (ret_type)(double)((double) x * (double) system_ticks::per_second() / double (e - t));
+ }
+ return persec;
+ }
+ };
+
+
#if PHAS_RDTSCP
- struct fast_ticks
+ struct fast_ticks : public base_ticks<fast_ticks, int64_t>
{
typedef int64_t type;
static inline type start()
@@ -52,11 +76,10 @@ namespace chrono {
{
return start();
}
- static type per_second();
};
#else
- struct fast_ticks
+ struct fast_ticks : public base_ticks<fast_ticks, int64_t>
{
typedef int64_t type;
static inline type start()
@@ -76,7 +99,6 @@ namespace chrono {
{
return start();
}
- static type per_second();
};
#endif
@@ -93,7 +115,7 @@ namespace chrono {
*
*/
- struct exact_ticks
+ struct exact_ticks : public base_ticks<exact_ticks, int64_t>
{
typedef int64_t type;
@@ -129,8 +151,6 @@ namespace chrono {
);
return v;
}
-
- static type per_second();
};
#else
using exact_ticks = fast_ticks;