xmrig/src/base/kernel/Platform_mac.cpp

/* XMRig
 * Copyright 2010      Jeff Garzik <jgarzik@pobox.com>
 * Copyright 2012-2014 pooler      <pooler@litecoinpool.org>
 * Copyright 2014      Lucas Jones <https://github.com/lucasjones>
 * Copyright 2014-2016 Wolf9466    <https://github.com/OhGodAPet>
 * Copyright 2016      Jay D Dee   <jayddee246@gmail.com>
 * Copyright 2018-2020 SChernykh   <https://github.com/SChernykh>
 * Copyright 2016-2020 XMRig       <https://github.com/xmrig>, <support@xmrig.com>
 *
 *   This program 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.
 *
 *   This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
 */


#include <mach/thread_act.h>
#include <mach/thread_policy.h>
#include <stdio.h>
#include <stdlib.h>
#include <sys/resource.h>
#include <uv.h>
#include <thread>
#include <fstream>


#include "base/kernel/Platform.h"
#include "version.h"


char *xmrig::Platform::createUserAgent()
{
    constexpr const size_t max = 256;

    char *buf = new char[max]();
    int length = snprintf(buf, max, "%s/%s (Macintosh; Intel Mac OS X) libuv/%s", APP_NAME, APP_VERSION, uv_version_string());

#   ifdef __clang__
    length += snprintf(buf + length, max - length, " clang/%d.%d.%d", __clang_major__, __clang_minor__, __clang_patchlevel__);
#   elif defined(__GNUC__)
    length += snprintf(buf + length, max - length, " gcc/%d.%d.%d", __GNUC__, __GNUC_MINOR__, __GNUC_PATCHLEVEL__);
#   endif

    return buf;
}


#ifndef XMRIG_FEATURE_HWLOC
bool xmrig::Platform::setThreadAffinity(uint64_t cpu_id)
{
    thread_port_t mach_thread;
    thread_affinity_policy_data_t policy = { static_cast<integer_t>(cpu_id) };
    mach_thread = pthread_mach_thread_np(pthread_self());

    const bool result = (thread_policy_set(mach_thread, THREAD_AFFINITY_POLICY, (thread_policy_t)&policy, 1) == KERN_SUCCESS);
    std::this_thread::sleep_for(std::chrono::milliseconds(1));
    return result;
}
#endif


void xmrig::Platform::setProcessPriority(int)
{
}


void xmrig::Platform::setThreadPriority(int priority)
{
    if (priority == -1) {
        return;
    }

    int prio = 19;
    switch (priority)
    {
    case 1:
        prio = 5;
        break;

    case 2:
        prio = 0;
        break;

    case 3:
        prio = -5;
        break;

    case 4:
        prio = -10;
        break;

    case 5:
        prio = -15;
        break;

    default:
        break;
    }

    setpriority(PRIO_PROCESS, 0, prio);
}


bool xmrig::Platform::isOnBatteryPower()
{
    for (int i = 0; i <= 1; ++i) {
        char buf[64];
        snprintf(buf, 64, "/sys/class/power_supply/BAT%d/status", i);
        std::ifstream f(buf);
        if (f.is_open()) {
            std::string status;
            f >> status;
            return (status == "Discharging");
        }
    }
    return false;
}