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/**
* Timestamp Functions
* (C) 1999-2009 Jack Lloyd
*
* Distributed under the terms of the Botan license
*/
#ifndef BOTAN_TIMERS_H__
#define BOTAN_TIMERS_H__
#include <botan/rng.h>
#include <ctime>
namespace Botan {
/*
* Time Access/Conversion Functions
*/
BOTAN_DLL u64bit system_time();
BOTAN_DLL std::tm time_t_to_tm(u64bit);
/**
* Timer Interface
*/
class BOTAN_DLL Timer : public EntropySource
{
public:
/**
@return nanoseconds resolution timestamp, unknown epoch
*/
virtual u64bit clock() const = 0;
void poll(Entropy_Accumulator& accum);
virtual ~Timer() {}
protected:
static u64bit combine_timers(u32bit, u32bit, u32bit);
};
/**
* ANSI Clock Timer
*/
class BOTAN_DLL ANSI_Clock_Timer : public Timer
{
public:
std::string name() const { return "ANSI clock"; }
u64bit clock() const;
};
}
#endif
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