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Code Issues Releases Wiki Activity

ircd::util: Improve timer.

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This commit is contained in:
Jason Volk 2017-09-23 19:36:32 -07:00
parent c138c53449
commit befb76a9d9
1 changed files with 24 additions and 3 deletions
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27
include/ircd/timer.h
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@ -30,20 +30,25 @@ namespace ircd::util
struct ircd::util::timer
{
IRCD_OVERLOAD(stopped)
using clock = std::chrono::steady_clock;
nanoseconds accumulator;
clock::time_point start;
bool stopped() const;
template<class duration = std::chrono::seconds> duration get() const;
template<class duration = std::chrono::seconds> duration at() const;
void cont();
void stop();
timer(const std::function<void ()> &);
timer(stopped_t);
timer();
};
/// Default construction will start the timer.
inline
ircd::util::timer::timer()
:accumulator{0ns}
@ -51,6 +56,14 @@ ircd::util::timer::timer()
{
}
/// timer(timer::stopped)
inline
ircd::util::timer::timer(stopped_t)
:accumulator{0ns}
,start{clock::time_point::min()}
{
}
inline
ircd::util::timer::timer(const std::function<void ()> &func)
:timer{}
@ -62,10 +75,10 @@ ircd::util::timer::timer(const std::function<void ()> &func)
inline void
ircd::util::timer::stop()
{
const auto now(clock::now());
if(start == clock::time_point::min())
if(stopped())
return;
const auto now(clock::now());
accumulator += std::chrono::duration_cast<decltype(accumulator)>(now - start);
start = clock::time_point::min();
}
@ -73,7 +86,7 @@ ircd::util::timer::stop()
inline void
ircd::util::timer::cont()
{
if(start != clock::time_point::min())
if(!stopped())
{
const auto now(clock::now());
accumulator += std::chrono::duration_cast<decltype(accumulator)>(now - start);
@ -98,3 +111,11 @@ const
{
return std::chrono::duration_cast<duration>(accumulator);
}
template<class duration>
bool
ircd::util::timer::stopped()
const
{
return start == clock::time_point::min();
}