RTEMS 4.8.1 On-Line Library

Message Buffer Manager snd_mbf - Send Message to Message Buffer

RTEMS ITRON 3.0 API User's Guide

6.4.3: snd_mbf - Send Message to Message Buffer

CALLING SEQUENCE:

ER snd_mbf(
  ID mbfid,
  VP msg,
  INT msgsz
);

STATUS CODES:

E_OK - Normal Completion

E_ID - Invalid ID number (mbfid was invalid or could not be used)

E_NOEXS - Object does not exist (the message buffer specified by mbfid does not exist)

E_OACV - Object access violation (A mbfid less than -4 was specified from a user task. This is implementation dependent.)

E_PAR - Parameter error (msgsz is 0 or less; msgsz is larger than maxmsz; values unsuitable for msg; tmout is -2 or less)

E_DLT - The object being waited for was deleted (the message buffer of interest was deleted while waiting)

E_RLWAI - WAIT state was forcibly released (rel_wai was received while waiting)

E_CTX - Context error (issued from task-independent portions or a task in dispatch disabled state; implementation dependent for psnd_mbf and tsnd_mbf(tmout=TMO_POL))

EN_OBJNO - An object number which could not be accessed on the target node is specified.

EN_CTXID - Specified an object on another node when the system call was issued from a task in dispatch disabled state or from a task-independent portion (implementation-dependent; applicable to psnd_mbf and tsnd_mbf (tmout=TMO_POL) only)

EN_PAR - A value outside the range supported by the target node and/or transmission packet format was specified as a parameter (a value outside supported range was specified for msgsz and/or tmout)

DESCRIPTION:

This routine sends the message stored at the address given by msg to the message buffer specified by mbfid. The size of the message is specified by msgsz; that is, msgsz number of bytes beginning from msg are copied to the message buffer specified by mbfid. If the available space in the buffer is not enough to include the message given by msg, the task issuing this system call will wait on a send wait queue until more buffer space becomes available.

NOTES:

Multiprocessing is not supported. Thus none of the "EN_" status codes will be returned.

RTEMS ITRON 3.0 API User's Guide