io_notify_t

Структура, характеризующая сообщения менеджера ресурсов типа _IO_NOTIFY

Прототип:

#include <sys/iofunc.h>
        
struct _io_notify {
    uint16_t                    type;
    uint16_t                    combine_len;
    int32_t                     action;
    int32_t                     flags;
    struct sigevent             event;
};
        
struct _io_notify_reply {
    uint32_t                    zero;
    uint32_t                    flags;
};
        
typedef union {
    struct _io_notify           i;
    struct _io_notify_reply     o;
} io_notify_t;

Описание:

Данная структура ассоциирована с сообщениями менеджера ресурсов типа _IO_NOTIFY. Поле i определяет входящие данные (поступающие в менеджер ресурсов), поле o исходящие (отправляемые обратно клиенту).

The i member is a structure of type _io_notify that contains the following members:

type

_IO_NOTIFY

combine_len

If the message is a combine message, _IO_COMBINE_FLAG is set in this member.

action

_NOTIFY_ACTION_POLL, _NOTIFY_ACTION_POLLARM, or _NOTIFY_ACTION_TRANARM, as described above.

flags

One of the following:

_NOTIFY_COND_INPUT

this condition is met when there are one or more units of input data available (i.e. clients can now issue reads).

_NOTIFY_COND_OUTPUT

this condition is met when there's room in the output buffer for one or more units of data (i.e. clients can now issue writes).

_NOTIFY_COND_OBAND

the condition is met when one or more units of out-of-band data are available.

event

A pointer to a struct sigevent that defines the event that the resource manager is to deliver once a condition is met.

The o member is a structure of type _io_notify_reply that contains the following members:

flags

Which of the conditions were triggered; see the flags for _io_notify, above.

Классификация:

ЗОСРВ «Нейтрино»

Тематические ссылки:

resmgr_io_funcs_t, struct sigevent, iofunc_notify()

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