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Function SilcTaskCallback SYNOPSIS
        typedef void (*SilcTaskCallback)(SilcSchedule schedule,
                                         void *app_context,
                                         SilcTaskEvent type, SilcUInt32 fd,
                                         void *context);
DESCRIPTION
        The task callback function.  This function will be called by the
        scheduler when some event of the task is performed.  For example,
        when data is available from the connection this will be called.

        The `schedule' is the scheduler context, the `type' is the indicated
        event, the `fd' is the file descriptor of the task and the `context'
        is a caller specified context. If multiple events occurred this
        callback is called separately for all events.  The `app_context'
        is application specific context that was given as argument to the
        silc_schedule_init function.  If the task is timeout task then `fd'
        is zero (0).

        To specify task callback function in the application using the
        SILC_TASK_CALLBACK macro is recommended.

        The callback should not perform lenghty or blocking operations as
        this would also block all other waiting tasks.  The task callback
        should either handle the operation fast or issue an asynchronous
        call (like to register 0 timeout task) to handle it later.
SILC Schedule Interface SilcSchedule SilcTask SilcTaskEvent SilcTaskCallback SilcTaskNotifyCb SILC_ALL_TASKS SILC_TASK_CALLBACK silc_schedule_init silc_schedule_uninit silc_schedule_stop silc_schedule silc_schedule_one silc_schedule_wakeup silc_schedule_get_context silc_schedule_set_notify silc_schedule_task_add_fd silc_schedule_task_add_timeout silc_schedule_task_add_signal silc_schedule_task_del silc_schedule_task_del_by_fd silc_schedule_task_del_by_callback silc_schedule_task_del_by_context silc_schedule_task_del_by_all silc_schedule_set_listen_fd silc_schedule_get_fd_events silc_schedule_unset_listen_fd

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