nn_freemsg − deallocate a message
#include <nanomsg/nn.h>
int nn_freemsg (void *msg);
Deallocates a message allocated using nn_allocmsg(3) function or received via nn_recv(3) or nn_recvmsg(3) function. While nn_recv(3) and nn_recvmsg(3) allow to receive data into arbitrary buffers, using library−allocated buffers can be more efficient for large messages as it allows for using zero−copy techniques.
If the function succeeds zero is returned. Otherwise, −1 is returned and errno is set to to one of the values defined below.
EFAULT
The message pointer is invalid.
void *buf;
nn_recv (s, &buf, NN_MSG, 0);
nn_freemsg (buf);
nn_allocmsg(3) nn_reallocmsg(3) nn_recv(3) nn_recvmsg(3) nanomsg(7)
Martin Sustrik <[email protected]>