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epee: allow a random component in once_a_time timeouts

This commit is contained in:
moneromooo-monero 2019-10-17 12:13:17 +00:00
parent c0f5047878
commit cc2fc0bc3e
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1 changed files with 16 additions and 4 deletions
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20
contrib/epee/include/math_helper.h
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@ -32,6 +32,7 @@
#include <list>
#include <numeric>
#include <random>
#include <boost/timer/timer.hpp>
#include <boost/uuid/uuid.hpp>
#include <boost/uuid/random_generator.hpp>
@ -230,7 +231,7 @@ namespace math_helper
}
}
template<uint64_t scale, int default_interval, bool start_immediate = true>
template<typename get_interval, bool start_immediate = true>
class once_a_time
{
uint64_t get_time() const
@ -251,12 +252,18 @@ namespace math_helper
#endif
}
void set_next_interval()
{
m_interval = get_interval()();
}
public:
once_a_time():m_interval(default_interval * scale)
once_a_time()
{
m_last_worked_time = 0;
if(!start_immediate)
m_last_worked_time = get_time();
set_next_interval();
}
void trigger()
@ -273,6 +280,7 @@ namespace math_helper
{
bool res = functr();
m_last_worked_time = get_time();
set_next_interval();
return res;
}
return true;
@ -283,9 +291,13 @@ namespace math_helper
uint64_t m_interval;
};
template<uint64_t N> struct get_constant_interval { public: uint64_t operator()() const { return N; } };
template<int default_interval, bool start_immediate = true>
class once_a_time_seconds: public once_a_time<1000000, default_interval, start_immediate> {};
class once_a_time_seconds: public once_a_time<get_constant_interval<default_interval * (uint64_t)1000000>, start_immediate> {};
template<int default_interval, bool start_immediate = true>
class once_a_time_milliseconds: public once_a_time<1000, default_interval, start_immediate> {};
class once_a_time_milliseconds: public once_a_time<get_constant_interval<default_interval * (uint64_t)1000>, start_immediate> {};
template<typename get_interval, bool start_immediate = true>
class once_a_time_seconds_range: public once_a_time<get_interval, start_immediate> {};
}
}