Added some "hot" attributes to mark a few routines that deserve

extra optimization.  Most likely this has no effect.

src/iperf_api.h

@@ -156,7 +156,7 @@ long get_tcpinfo_total_retransmits(struct iperf_interval_results *irp);
 void print_tcpinfo(struct iperf_test *test);
 void build_tcpinfo_message(struct iperf_interval_results *r, char *message);
 
-int iperf_send(struct iperf_test *, fd_set *);
+int iperf_send(struct iperf_test *, fd_set *) __attribute__((hot));
 int iperf_recv(struct iperf_test *, fd_set *);
 void sig_handler(int);
 void usage();

src/iperf_tcp.h

@@ -35,7 +35,7 @@ int iperf_tcp_recv(struct iperf_stream *);
  * returns: bytes sent
  *
  */
-int iperf_tcp_send(struct iperf_stream *);
+int iperf_tcp_send(struct iperf_stream *) __attribute__((hot));
 
 
 int iperf_tcp_listen(struct iperf_test *);

src/iperf_udp.h

@@ -25,7 +25,7 @@ int iperf_udp_recv(struct iperf_stream *);
  * returns: bytes sent
  *
  */
-int iperf_udp_send(struct iperf_stream *);
+int iperf_udp_send(struct iperf_stream *) __attribute__((hot));
 
 
 /**

src/net.h

@@ -12,7 +12,7 @@
 
 int netdial(int, int, char *, char *, int);
 int netannounce(int, int, char *, int);
-int Nwrite(int, void *, int, int);
+int Nwrite(int, void *, int, int) __attribute__((hot));
 int Nread(int, void *, int, int);
 int getsock_tcp_mss(int);
 int set_tcp_options(int, int, int);

src/timer.h

@@ -55,12 +55,12 @@ extern Timer* tmr_create(
 ** can just put the call to this routine right in your select().  Returns
 ** (struct timeval*) 0 if no timers are pending.
 */
-extern struct timeval* tmr_timeout( struct timeval* nowP );
+extern struct timeval* tmr_timeout( struct timeval* nowP ) __attribute__((hot));
 
 /* Run the list of timers. Your main program needs to call this every so often,
 ** or as indicated by tmr_timeout().
 */
-extern void tmr_run( struct timeval* nowP );
+extern void tmr_run( struct timeval* nowP ) __attribute__((hot));
 
 /* Reset the clock on a timer, to current time plus the original timeout. */
 extern void tmr_reset( struct timeval* nowP, Timer* timer );