Common.cpp

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/*
        This file is part of cpp-ethereum.

        cpp-ethereum is free software: you can redistribute it and/or modify
        it under the terms of the GNU General Public License as published by
        the Free Software Foundation, either version 3 of the License, or
        (at your option) any later version.

        cpp-ethereum is distributed in the hope that it will be useful,
        but WITHOUT ANY WARRANTY; without even the implied warranty of
        MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
        GNU General Public License for more details.

        You should have received a copy of the GNU General Public License
        along with cpp-ethereum.  If not, see <http://www.gnu.org/licenses/>.
*/
#include "Common.h"
#include "Exceptions.h"
#include "Log.h"
#ifndef FASC_BUILD
#include "BuildInfo.h"
#endif
using namespace std;
using namespace dev;

namespace dev
{
#ifdef FASC_BUILD
#define ETH_PROJECT_VERSION "1.3.0"
#endif
char const* Version = ETH_PROJECT_VERSION;

const u256 Invalid256 = ~(u256)0;

void InvariantChecker::checkInvariants(HasInvariants const* _this, char const* _fn, char const* _file, int _line, bool _pre)
{
        if (!_this->invariants())
        {
                cwarn << (_pre ? "Pre" : "Post") << "invariant failed in" << _fn << "at" << _file << ":" << _line;
                ::boost::exception_detail::throw_exception_(FailedInvariant(), _fn, _file, _line);
        }
}

struct TimerChannel: public LogChannel { static const char* name(); static const int verbosity = 0; };

#if defined(_WIN32)
const char* TimerChannel::name() { return EthRed " ! "; }
#else
const char* TimerChannel::name() { return EthRed " ⚡ "; }
#endif

TimerHelper::~TimerHelper()
{
        auto e = std::chrono::high_resolution_clock::now() - m_t;
        if (!m_ms || e > chrono::milliseconds(m_ms))
                clog(TimerChannel) << m_id << chrono::duration_cast<chrono::milliseconds>(e).count() << "ms";
}

uint64_t utcTime()
{
        // TODO: Fix if possible to not use time(0) and merge only after testing in all platforms
        // time_t t = time(0);
        // return mktime(gmtime(&t));
        return time(0);
}

string inUnits(bigint const& _b, strings const& _units)
{
        ostringstream ret;
        u256 b;
        if (_b < 0)
        {
                ret << "-";
                b = (u256)-_b;
        }
        else
                b = (u256)_b;

        u256 biggest = 1;
        for (unsigned i = _units.size() - 1; !!i; --i)
                biggest *= 1000;

        if (b > biggest * 1000)
        {
                ret << (b / biggest) << " " << _units.back();
                return ret.str();
        }
        ret << setprecision(3);

        u256 unit = biggest;
        for (auto it = _units.rbegin(); it != _units.rend(); ++it)
        {
                auto i = *it;
                if (i != _units.front() && b >= unit)
                {
                        ret << (double(b / (unit / 1000)) / 1000.0) << " " << i;
                        return ret.str();
                }
                else
                        unit /= 1000;
        }
        ret << b << " " << _units.front();
        return ret.str();
}

}