Allocate a message buffer for sending an asynchronous message
CAUTION:
Asynchronous messaging is an experimental feature;
for information about the use of
experimental software, see the Commercial Software License Agreement (CSLA) or
Partner Software License Agreement (PSLA) in the Licensing area of our website,
http://www.qnx.com/legal/licensing/.
Note:
Asynchronous messaging support is in its own kernel module.
In order to use it, you must add [module=async] to the procnto
line of your mkifs buildfile.
Synopsis:
#include <sys/asyncmsg.h>
void *asyncmsg_malloc( size_t size );
Arguments:
- size
- The size of the message.
Library:
libasyncmsg
Use the -l asyncmsg option to
qcc
to link against this library.
Description:
The asyncmsg_malloc() function allocates a message buffer for
sending.
Note:
Because the malloc() implementation uses signed, 32-bit integers
to represent the size internally,
you can't allocate more than 2 GB in a single allocation.
If the size is greater than 2 GB, asyncmsg_malloc() indicates
an error of ENOMEM.
Returns:
EOK, or -1 if an error occurred
(errno is set).
Errors:
- ENOMEM
- There's not enough memory.
Classification:
QNX Neutrino
| Safety: |
|
| Cancellation point |
No |
| Interrupt handler |
No |
| Signal handler |
No |
| Thread |
Yes |