NN_ERRNO(3) nanomsg manual NN_ERRNO(3)NAMEnn_errno - retrieve the current errno
SYNOPSIS
#include <nanomsg/nn.h>
int nn_errno (void);
DESCRIPTION
Returns value of errno for the current thread.
On most systems, errno can be accessed directly and this function is
not needed. However, on Windows, there are multiple implementations of
the CRT library (single-threaded, multi-threaded, release, debug) and
each of them has its own instance of errno. Thus, if nanomsg library
and the application that uses it link with different versions of CRT
library, they don’t share same instance of errno. Consequently, error
codes set by nanomsg cannot be accessed by the application. To overcome
this problem, application can use nn_errno() function to retrieve the
nanomsg’s value of errno.
RETURN VALUE
Returns value of errno for the current thread.
ERRORS
No errors are defined.
EXAMPLE
rc = nn_send (s, "ABC", 3, 0);
if (rc < 0)
printf ("nn_send failed with error code %d\n", nn_errno ());
SEE ALSOnn_strerror(3)nanomsg(7)AUTHORS
Martin Sustrik <sustrik@250bpm.com[1]>
NOTES
1. sustrik@250bpm.com
mailto:sustrik@250bpm.com
nanomsg Unknown 12/23/2015 NN_ERRNO(3)
