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authorStanislaw Halik <sthalik@misaki.pl>2019-04-16 17:20:31 +0200
committerStanislaw Halik <sthalik@misaki.pl>2019-04-16 17:20:31 +0200
commit4f31165ef67837ca9e4a9677b19082c023a3c931 (patch)
tree100bb3085003116ba965a6028cbfdde0ba12cc6c /compat
parent286e57d9e597f4821b17bf07c0686f75257bbc3d (diff)
compat/timer: simplify stuff
Diffstat (limited to 'compat')
-rw-r--r--compat/timer.cpp76
-rw-r--r--compat/timer.hpp13
2 files changed, 38 insertions, 51 deletions
diff --git a/compat/timer.cpp b/compat/timer.cpp
index b46ebe4a..a555018c 100644
--- a/compat/timer.cpp
+++ b/compat/timer.cpp
@@ -12,6 +12,8 @@
#include <cassert>
#include <cmath>
+#include <QDebug>
+
using time_type = Timer::time_type;
Timer::Timer()
@@ -24,40 +26,35 @@ void Timer::start()
gettime(&state);
}
-// nanoseconds
-
-time_type Timer::elapsed_nsecs() const
+struct timespec Timer::gettime_() const
{
- timespec cur{};
- gettime(&cur);
- return conv_nsecs(cur);
+ struct timespec ts{};
+ gettime(&ts);
+ ts.tv_sec -= state.tv_sec;
+ ts.tv_nsec -= state.tv_nsec;
+ return ts;
}
-time_type Timer::conv_nsecs(const struct timespec& cur) const
-{
- return (cur.tv_sec - state.tv_sec) * 1000000000LL + (cur.tv_nsec - state.tv_nsec);
-}
-
-// microseconds
+// nanoseconds
-double Timer::elapsed_usecs() const
+time_type Timer::elapsed_nsecs() const
{
- timespec cur{};
- gettime(&cur);
- const long long nsecs = conv_nsecs(cur);
- return nsecs * 1e-3;
+ struct timespec delta = gettime_();
+ return (time_type)delta.tv_sec * 1000000000 + (time_type)delta.tv_nsec;
}
// milliseconds
double Timer::elapsed_ms() const
{
- return elapsed_usecs() / 1000.;
+ struct timespec delta = gettime_();
+ return delta.tv_sec * 1000 + delta.tv_nsec * 1e-6;
}
double Timer::elapsed_seconds() const
{
- return double(elapsed_nsecs() * 1e-9);
+ struct timespec delta = gettime_();
+ return delta.tv_sec + delta.tv_nsec * 1e-9;
}
// --
@@ -67,27 +64,28 @@ double Timer::elapsed_seconds() const
#if defined (_WIN32)
# include <windows.h>
-static LARGE_INTEGER otr_get_clock_frequency()
+static auto otr_get_clock_frequency()
{
LARGE_INTEGER freq{};
- const BOOL ret = QueryPerformanceFrequency(&freq);
+ BOOL ret = QueryPerformanceFrequency(&freq);
assert(ret && "QueryPerformanceFrequency failed");
- return freq;
+ return freq.QuadPart;
}
-static void otr_clock_gettime(timespec* ts)
+void Timer::gettime(timespec* ts)
{
- static const LARGE_INTEGER freq = otr_get_clock_frequency();
+ static const unsigned long long freq = otr_get_clock_frequency();
LARGE_INTEGER d;
- (void) QueryPerformanceCounter(&d);
+ BOOL ret = QueryPerformanceCounter(&d);
+ assert(ret && "QueryPerformanceCounter failed");
using ll = long long;
- const auto part = ll(std::roundl((d.QuadPart * 1000000000.L) / ll(freq.QuadPart)));
+ auto part = ll(std::roundl((d.QuadPart * 1000000000.L) / freq));
using t_s = decltype(ts->tv_sec);
using t_ns = decltype(ts->tv_nsec);
- ts->tv_sec = t_s(part / 1000000000LL);
+ ts->tv_sec = t_s((long double)d.QuadPart/freq);
ts->tv_nsec = t_ns(part % 1000000000LL);
}
@@ -98,11 +96,11 @@ static void otr_clock_gettime(timespec* ts)
static mach_timebase_info_data_t otr_get_mach_frequency()
{
mach_timebase_info_data_t timebase_info;
- (void) mach_timebase_info(&timebase_info);
+ (void)mach_timebase_info(&timebase_info);
return timebase_info;
}
-static void otr_clock_gettime(timespec* ts)
+void Timer::gettime(timespec* ts)
{
static const mach_timebase_info_data_t timebase_info = otr_get_mach_frequency();
uint64_t state, nsec;
@@ -112,19 +110,15 @@ static void otr_clock_gettime(timespec* ts)
ts->tv_nsec = nsec % 1000000000UL;
}
+#else
+
+void Timer::gettime(timespec* ts)
+{
+ [[maybe_unused]] int error = clock_gettime(CLOCK_MONOTONIC, ts);
+ assert(error == 0 && "clock_gettime failed");
+};
+
#endif
// common
-void Timer::gettime(timespec* state)
-{
-#if defined(_WIN32) || defined(__MACH__)
- otr_clock_gettime(state);
-#elif defined CLOCK_MONOTONIC
- const int res = clock_gettime(CLOCK_MONOTONIC, state);
- (void)res;
- assert(res == 0 && "must support CLOCK_MONOTONIC");
-#else
-# error "timer query method not known"
-#endif
-}
diff --git a/compat/timer.hpp b/compat/timer.hpp
index d162a949..c107d28d 100644
--- a/compat/timer.hpp
+++ b/compat/timer.hpp
@@ -12,30 +12,23 @@
#include "time.hpp"
#include <ctime>
+#include <cstdint>
#include <type_traits>
struct OTR_COMPAT_EXPORT Timer final
{
- using time_type = time_t;
+ using time_type = std::int64_t;
Timer();
void start();
- template<typename t>
- constexpr auto elapsed() const
- {
- using ns = time_units::ns;
- return t{ns{elapsed_nsecs()}};
- }
-
time_type elapsed_nsecs() const;
- double elapsed_usecs() const;
double elapsed_ms() const;
double elapsed_seconds() const;
private:
struct timespec state {};
static void gettime(struct timespec* state);
- time_type conv_nsecs(const struct timespec& cur) const;
+ struct timespec gettime_() const;
using ns = time_units::ns;
};