Containers::Array<char, Directory::MapDeleter> Directory::map(const std::string& filename, std::size_t size) {
/* Open the file for writing. Create if it doesn't exist, truncate it if it
does. */
const int fd = open(filename.data(), O_RDWR|O_CREAT|O_TRUNC, mode_t(0600));
if(fd == -1) {
Error() << "Utility::Directory::map(): can't open the file";
return nullptr;
}
/* Resize the file to requested size by seeking one byte before */
if(lseek(fd, size - 1, SEEK_SET) == -1) {
close(fd);
Error() << "Utility::Directory::map(): can't seek to resize the file";
return nullptr;
}
/* And then writing a zero byte on that position */
if(::write(fd, "", 1) != 1) {
close(fd);
Error() << "Utility::Directory::map(): can't write to resize the file";
return nullptr;
}
/* Map the file */
char* data = reinterpret_cast<char*>(mmap(nullptr, size, PROT_READ|PROT_WRITE, MAP_SHARED, fd, 0));
if(data == MAP_FAILED) {
close(fd);
Error() << "Utility::Directory::map(): can't map the file";
return nullptr;
}
return Containers::Array<char, MapDeleter>{data, size, MapDeleter{fd}};
}
void FileMetadataWidgetTest::slotChooseFiles()
{
KUrl::List urlList = KFileDialog::getOpenUrls();
KFileItemList list;
foreach(const KUrl& url, urlList)
list << KFileItem( url, QString(), mode_t() );
m_metadataWidget->setItems( list );
}
void
SigGen::update(DefaultGUIModel::update_flags_t flag)
{
switch (flag)
{
case INIT:
setParameter("Freq (Hz)", QString::number(freq));
setParameter("ZAP max Freq (Hz)", QString::number(freq2));
setParameter("ZAP duration (s)", QString::number(ZAPduration));
setParameter("Delay", QString::number(delay));
setParameter("Width", QString::number(width));
setParameter("Amplitude", QString::number(amp));
setState("Time (s)", systime);
updateMode(0);
waveShape->setCurrentItem(mode);
break;
case MODIFY:
delay = getParameter("Delay").toDouble();
freq = getParameter("Freq (Hz)").toDouble();
freq2 = getParameter("ZAP max Freq (Hz)").toDouble();
ZAPduration = getParameter("ZAP duration (s)").toDouble();
width = getParameter("Width").toDouble();
amp = getParameter("Amplitude").toDouble();
mode = mode_t(waveShape->currentItem());
initStimulus();
break;
case PERIOD:
dt = RT::System::getInstance()->getPeriod() * 1e-9; // time in seconds
initStimulus();
case PAUSE:
output(0) = 0.0;
zapWave.setIndex(0);
break;
case UNPAUSE:
systime = 0;
count = 0;
break;
default:
break;
}
}
int startDaemon()
{
pid_t pid;
pid = fork();
///NOTE: version in trunk checks for CHILD, not 0...
if( pid < 0 )
exit( EXIT_FAILURE );
if( pid > 0 )
exit( EXIT_SUCCESS );
///NOTE: version in trunk checks for ERROR not 0...
if( setsid() < 0 )
exit( EXIT_FAILURE );
/// change to root in file system
if( ( chdir( "/" ) ) < 0 )
exit( EXIT_FAILURE );
umask( 0 );
for( int i = sysconf( _SC_OPEN_MAX ); i > 0; i-- )
close( i );
/// check if the directory for pid file exist
ifstream fin;
string path = "/tmp/wonder";
fin.open( path.c_str() , ios_base::in );
if( !fin.is_open() )
{
/// create /tmp/wonder directory if it does not exist yet
/// the sticky: anyone is able to create files, but
/// not able to delete anyone elses files but their own
int error = mkdir( path.c_str(), mode_t(S_IRWXU | S_IRWXG | S_IRWXO | S_ISVTX));
if( error != 0 )
return 1;
}
/// open file stream to write the pid in
string name;
ostringstream spid;
/// get pid of parent process
spid << getpid();
if( twonderConf->user == NULL )
pathPidfile = path + "/twonder." + spid.str() + ".pid";
else
pathPidfile = path + "/twonder." + ( string ) twonderConf->user + ".pid";
ofstream pidFile( pathPidfile.c_str() );
pidFile << spid.str();
pidFile.close();
/// write stdin to /dev/null
freopen("/dev/null", "r", stdin );
/// write stdout and stderr to the log file
freopen( "/var/log/wonder.log", "w", stdout );
freopen( "/var/log/wonder.log", "w", stderr );
return 0;
}
