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#ifndef MODORGANIZER_MOMULTIPROCESS_INCLUDED
#define MODORGANIZER_MOMULTIPROCESS_INCLUDED
#include <QObject>
#include <QSharedMemory>
#include <QLocalServer>
/**
* used to ensure only a single process of Mod Organizer is started and to
* allow ephemeral processes to send messages to the primary (visible) one.
* This way, other processes can start a download in the primary one
**/
class MOMultiProcess : public QObject
{
Q_OBJECT
public:
// `allowMultiple`: if another process is running, run this one
// disconnected from the shared memory
explicit MOMultiProcess(bool allowMultiple, QObject *parent = 0);
/**
* @return true if this process's job is to forward data to the primary
* process through shared memory
**/
bool ephemeral() const
{
return m_Ephemeral;
}
// returns true if this is not the primary process, but was allowed because
// of the AllowMultiple flag
//
bool secondary() const
{
return !m_Ephemeral && !m_OwnsSM;
}
/**
* send a message to the primary process. This can be used to transmit download urls
*
* @param message message to send
**/
void sendMessage(const QString &message);
signals:
/**
* @brief emitted when an ephemeral process has sent a message (to us)
*
* @param message the message we received
**/
void messageSent(const QString &message);
public slots:
private slots:
void receiveMessage();
private:
bool m_Ephemeral;
bool m_OwnsSM;
QSharedMemory m_SharedMem;
QLocalServer m_Server;
};
#endif // MODORGANIZER_MOMULTIPROCESS_INCLUDED
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