deskflow/src/lib/platform/OSXPowerManager.cpp

/*
 * Deskflow -- mouse and keyboard sharing utility
 * Copyright (C) 2012-2021 Symless Ltd.
 * Copyright (C) 2008 Volker Lanz (vl@fidra.de)
 *
 * This package is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * found in the file LICENSE that should have accompanied this file.
 *
 * This package 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 "OSXPowerManager.h"
#include "base/Log.h"

OSXPowerManager::OSXPowerManager() {}

OSXPowerManager::~OSXPowerManager() { enableSleep(); }

void OSXPowerManager::disableSleep() {
  if (!m_sleepPreventionAssertionID) {
    CFStringRef reasonForActivity = CFSTR(DESKFLOW_APP_NAME " application");
    IOReturn result = IOPMAssertionCreateWithName(
        kIOPMAssertPreventUserIdleDisplaySleep, kIOPMAssertionLevelOn,
        reasonForActivity, &m_sleepPreventionAssertionID);
    if (result != kIOReturnSuccess) {
      m_sleepPreventionAssertionID = 0;
      LOG((CLOG_ERR "failed to disable system idle sleep"));
    }
  }
}

void OSXPowerManager::enableSleep() {
  if (m_sleepPreventionAssertionID) {
    IOPMAssertionRelease(m_sleepPreventionAssertionID);
  }
}