[GitHub] [incubator-nuttx] pkarashchenko commented on a change in pull request #5526: net/tcp: add support for send timeout on buffer mode

[GitBox]

pkarashchenko commented on a change in pull request #5526:
URL: https://github.com/apache/incubator-nuttx/pull/5526#discussion_r809012387



##########
File path: net/tcp/tcp_send_buffered.c
##########
@@ -1172,7 +1204,12 @@ ssize_t psock_tcp_send(FAR struct socket *psock, FAR 
const void *buf,
               goto errout_with_lock;
             }
 
-          net_lockedwait_uninterruptible(&conn->snd_sem);
+          remain = tcp_send_gettimeout(anchor, remain);
+          ret = net_timedwait_uninterruptible(&conn->snd_sem, remain);

Review comment:
       Is it possible to go with
   ```
     clock_t start;
   ...
     start = clock_systime_ticks();
   ...
     ret = net_timedwait_uninterruptible(&conn->snd_sem, 
tcp_send_gettimeout(start, _SO_TIMEOUT(conn->sconn.s_sndtimeo)));
   ```
   and modify `tcp_send_gettimeout` to
   ```
   static unsigned int tcp_send_gettimeout(clock_t start, unsigned int timeout)
   {
     clock_t elapse;
   
     if (remain != UINT_MAX)
       {
         elapse = TICK2MSEC(clock_systime_ticks() - start);
         if (elapse >= remain)
           {
             remain = 0;
           }
         else
           {
             remain -= elapse;
           }
       }
   
     return remain;
   }
   ```
   ?




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