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asyncmsg_connect_attr()

Examine or change connection attributes for asynchronous messaging


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/.

Synopsis:

#include <sys/asyncmsg.h> 

int asyncmsg_connect_attr (
      int coid,
      struct _asyncmsg_connection_attr *old_attr, 
      const struct _asyncmsg_connection_attr *new_attr);

Arguments:

coid
The connection ID.
old_attr
NULL, or a pointer to a _asyncmsg_connection_attr structure where the function can store the current attributes for the connection.
new_attr
NULL, or a pointer to a _asyncmsg_connection_attr structure that specifies the attributes to set for the connection.

Library:

libasyncmsg

Use the -l asyncmsg option to qcc to link against this library.

Description:

You can use asyncmsg_connect_attr() to get or set the attributes to the connection used for asynchronous messaging:

Returns:

EOK, or -1 if an error occurred (errno is set).

Errors:

EINVAL
The connection specified by coid doesn't exist.

Classification:

QNX Neutrino

Safety:
Cancellation point No
Interrupt handler No
Signal handler No
Thread Yes

See also:

asyncmsg_channel_create(), asyncmsg_channel_destroy(), asyncmsg_connect_attach(), asyncmsg_connect_detach(), _asyncmsg_connection_attr, asyncmsg_flush(), asyncmsg_free(), asyncmsg_get(), asyncmsg_malloc(), asyncmsg_put(), asyncmsg_putv()

Asynchronous Messaging Technote


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