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#ifndef PREFORK_H
#define PREFORK_H

#include "qprocessmanager-global.h"

QT_BEGIN_NAMESPACE_PROCESSMANAGER

struct Q_ADDON_PROCESSMANAGER_EXPORT QPreforkChildData {
    int in;      // Child stdin (write to this)
    int out;     // Child stdout (read from this)
    int pid;     // Child process ID
};

class Q_ADDON_PROCESSMANAGER_EXPORT QPrefork {
public:
    static QPrefork *instance();
    void execute(int *argc_ptr, char ***argv_ptr);
    void checkChildDied(pid_t pid);

    int  size() const;
    const QPreforkChildData *at(int i) const;

private:
    QPrefork();

    int  nextMarker(int index);
    void launch(int start, int end);
    int  makeChild(int start);

private:
    int    m_argc;       // Original number of arguments
    char **m_argv;       // Original pointer to argument
    size_t m_argv_size;  // Length of vector allocated to original list
    int    m_count;      // Number of child processes forked
    QPreforkChildData *m_children;
};

QT_END_NAMESPACE_PROCESSMANAGER

#endif // PREFORK_H