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// Copyright (c) 2009-2010 Satoshi Nakamoto
// Copyright (c) 2009-2020 The Bitcoin Core developers
// Distributed under the MIT software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
#ifndef BITCOIN_UTIL_TIME_H
#define BITCOIN_UTIL_TIME_H
#include <compat.h>
#include <chrono>
#include <stdint.h>
#include <string>
using namespace std::chrono_literals;
void UninterruptibleSleep(const std::chrono::microseconds& n);
/**
* Helper to count the seconds of a duration.
*
* All durations should be using std::chrono and calling this should generally
* be avoided in code. Though, it is still preferred to an inline t.count() to
* protect against a reliance on the exact type of t.
*
* This helper is used to convert durations before passing them over an
* interface that doesn't support std::chrono (e.g. RPC, debug log, or the GUI)
*/
constexpr int64_t count_seconds(std::chrono::seconds t) { return t.count(); }
constexpr int64_t count_milliseconds(std::chrono::milliseconds t) { return t.count(); }
constexpr int64_t count_microseconds(std::chrono::microseconds t) { return t.count(); }
using SecondsDouble = std::chrono::duration<double, std::chrono::seconds::period>;
/**
* Helper to count the seconds in any std::chrono::duration type
*/
inline double CountSecondsDouble(SecondsDouble t) { return t.count(); }
/**
* DEPRECATED
* Use either GetTimeSeconds (not mockable) or GetTime<T> (mockable)
*/
int64_t GetTime();
/** Returns the system time (not mockable) */
int64_t GetTimeMillis();
/** Returns the system time (not mockable) */
int64_t GetTimeMicros();
/** Returns the system time (not mockable) */
int64_t GetTimeSeconds(); // Like GetTime(), but not mockable
/**
* DEPRECATED
* Use SetMockTime with chrono type
*
* @param[in] nMockTimeIn Time in seconds.
*/
void SetMockTime(int64_t nMockTimeIn);
/** For testing. Set e.g. with the setmocktime rpc, or -mocktime argument */
void SetMockTime(std::chrono::seconds mock_time_in);
/** For testing */
std::chrono::seconds GetMockTime();
/** Return system time (or mocked time, if set) */
template <typename T>
T GetTime();
/**
* ISO 8601 formatting is preferred. Use the FormatISO8601{DateTime,Date}
* helper functions if possible.
*/
std::string FormatISO8601DateTime(int64_t nTime);
std::string FormatISO8601Date(int64_t nTime);
int64_t ParseISO8601DateTime(const std::string& str);
/**
* Convert milliseconds to a struct timeval for e.g. select.
*/
struct timeval MillisToTimeval(int64_t nTimeout);
/**
* Convert milliseconds to a struct timeval for e.g. select.
*/
struct timeval MillisToTimeval(std::chrono::milliseconds ms);
/** Sanity check epoch match normal Unix epoch */
bool ChronoSanityCheck();
#endif // BITCOIN_UTIL_TIME_H
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