timedata.cpp

// Copyright (c) 2014-2015 The Bitcoin Core developers
// Distributed under the MIT software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.

#if defined(HAVE_CONFIG_H)
#include <config/navcoin-config.h>
#endif

#include <timedata.h>

#include <netbase.h>
#include <sync.h>
#include <ui_interface.h>
#include <util.h>
#include <utilstrencodings.h>

using namespace std;

static CCriticalSection cs_nTimeOffset;
static int64_t nTimeOffset = 0;

/**
 * "Never go to sea with two chronometers; take one or three."
 * Our three time sources are:
 *  - System clock
 *  - Median of other nodes clocks
 *  - The user (asking the user to fix the system clock if the first two disagree)
 */
int64_t GetTimeOffset()
{
    LOCK(cs_nTimeOffset);
    return nTimeOffset;
}

int64_t GetAdjustedTime()
{
    return GetTime() + GetTimeOffset();
}

int64_t abs64(int64_t n)
{
    return (n >= 0 ? n : -n);
}

#define NAVCOIN_TIMEDATA_MAX_SAMPLES 200