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#include "ossignalconverter_p.h"

#include <signal.h>

#include <QTimer>

Q_GLOBAL_STATIC(OsSignalConverter, osSignalConverter);

OsSignalConverter* OsSignalConverter::instance()

{

    return osSignalConverter();

}

OsSignalConverter::OsSignalConverter()

: d(new OsSignalConverterPrivate(this))

{

};

OsSignalConverter::~OsSignalConverter()

{

}

OsSignalConverterPrivate::OsSignalConverterPrivate(OsSignalConverter* owner)

: QObject(owner), q(owner), poller(new QTimer(this))

{

    trap();

    connect(poller, SIGNAL(timeout()), this, SLOT(poll()));

    poller->start(1000);

}

OsSignalConverterPrivate::~OsSignalConverterPrivate()

{

    untrap();

}

void OsSignalConverterPrivate::trap()

{

    signal(SIGINT, handler);

    signal(SIGTERM, handler);

#ifdef SIGBREAK

    signal(SIGBREAK, handler);

#endif

#ifdef SIGHUP

    signal(SIGHUP, handler);

#endif

#ifdef SIGQUIT

    signal(SIGQUIT, handler);

#endif

}

void OsSignalConverterPrivate::untrap()

{

    signal(SIGINT, SIG_DFL);

    signal(SIGTERM, SIG_DFL);

#ifdef SIGBREAK

    signal(SIGBREAK, SIG_DFL);

#endif

#ifdef SIGHUP

    signal(SIGHUP, SIG_DFL);

#endif

#ifdef SIGQUIT

    signal(SIGQUIT, SIG_DFL);

#endif

}

void OsSignalConverterPrivate::handler(int sig)

{

    untrap(); //allow 2nd ctrl-c to really kill us

    terminateRequest = sig;

}

void OsSignalConverterPrivate::poll()

{

    if (terminateRequest) {

        fprintf(stderr, "\n*** caught signal %d, terminating ***\n", terminateRequest);

        poller->stop();

        emit q->terminate();

    }

}

sig_atomic_t OsSignalConverterPrivate::terminateRequest;