DCMD_MISC_MQSETATTR
QNX SDP8.0Devctl and Ioctl CommandsDeveloper
Set the attributes of a message queue
Synopsis:
#include <sys/dcmd_misc.h>
#define DCMD_MISC_MQSETATTR __DIOT(_DCMD_MISC, 2, struct mq_attr)
Arguments to devctl():
Argument | Value |
---|---|
filedes | A message-queue descriptor (of type mqd_t) that you obtained by opening the queue. |
dcmd | DCMD_MISC_MQSETATTR |
dev_data_ptr | A pointer to a struct mq_attr |
n_bytes | sizeof(struct mq_attr) |
dev_info_ptr | NULL |
Description:
This command sets the attributes for a message queue. For more information, see mq_settattr() in the QNX OS C Library Reference
Input:
The attributes that you want to set for the message queue.
Output:
None.
See also:
devctl(), mq_settattr() in the QNX OS C Library Reference
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