_pulse

Structure that describes a pulse

Synopsis:

#include <sys/neutrino.h>

struct _pulse {
    uint16_t                    type;
    uint16_t                    subtype;
    int8_t                      code;
    uint8_t                     zero[3];
    union sigval                value;
    int32_t                     scoid;
};

Description:

The _pulse structure describes a pulse, a fixed-size, nonblocking message that carries a small payload (four bytes of data plus a single byte code). The members include:

type: _PULSE_TYPE (0)
subtype: _PULSE_SUBTYPE (0)
code: A code that identifies the type of pulse. QNX Neutrino reserves the negative codes (see below). You can define your own pulses, with a code in the range from _PULSE_CODE_MINAVAIL through _PULSE_CODE_MAXAVAIL.
value: Information that's relevant to the code. If you define your own pulses, you can decide what information you want to store in this field.
scoid: Server connection ID.

The codes that the OS reserves, and the values sent with the pulse, include the following:

`code`	`value`
_PULSE_CODE_COIDDEATH	The connection ID of a connection that was attached to a destroyed channel
_PULSE_CODE_DISCONNECT	No value defined
_PULSE_CODE_NET_ACK, _PULSE_CODE_NET_UNBLOCK, and _PULSE_CODE_NET_DETACH (reserved for the io-pkt* resource manager)
_PULSE_CODE_RESTART	The cookie passed to MsgPause() that identifies the message that was paused
_PULSE_CODE_THREADDEATH	The thread ID of the thread that died
_PULSE_CODE_UNBLOCK	The receive ID (`rcvid`) associated with the blocking message

For more details, see ChannelCreate().

Classification:

QNX Neutrino