win port for c and cpp perf tests

perf/cpp/local_lat.cpp

@@ -20,7 +20,6 @@
 #include <zmq.hpp>
 #include <stdio.h>
 #include <stdlib.h>
-#include <unistd.h>
 #include <assert.h>
 #include <stddef.h>
 
@@ -47,7 +46,7 @@ int main (int argc, char *argv [])
         s.send (msg);
     }
 
-    sleep (1);
+    zmq_sleep (1);
 
     return 0;
 }

perf/cpp/local_thr.cpp

@@ -22,8 +22,6 @@
 #include <stdlib.h>
 #include <assert.h>
 #include <stddef.h>
-#include <stdint.h>
-#include <sys/time.h>
 
 int main (int argc, char *argv [])
 {
@@ -45,27 +43,17 @@ int main (int argc, char *argv [])
     s.recv (&msg);
     assert (msg.size () == message_size);
 
-    timeval start;
-    int rc = gettimeofday (&start, NULL);
-    assert (rc == 0);
+    void *watch = zmq_stopwatch_start ();
 
     for (int i = 1; i != message_count; i++) {
         s.recv (&msg);
         assert (msg.size () == message_size);
     }
 
-    timeval end;
-    rc = gettimeofday (&end, NULL);
-    assert (rc == 0);
+    unsigned long elapsed = zmq_stopwatch_stop (watch);
 
-    end.tv_sec -= start.tv_sec;
-    start.tv_sec = 0;
-
-    uint64_t elapsed = ((uint64_t) end.tv_sec * 1000000 + end.tv_usec) -
-        ((uint64_t) start.tv_sec * 1000000 + start.tv_usec);
-    if (elapsed == 0)
-        elapsed = 1;
-    uint64_t throughput = (uint64_t) message_count * 1000000 / elapsed;
+    unsigned long throughput = (unsigned long)
+        ((double) message_count / (double) elapsed * 1000000);
     double megabits = (double) (throughput * message_size * 8) / 1000000;
 
     printf ("message size: %d [B]\n", (int) message_size);

perf/cpp/remote_lat.cpp

@@ -22,7 +22,6 @@
 #include <stdlib.h>
 #include <assert.h>
 #include <stddef.h>
-#include <sys/time.h>
 
 int main (int argc, char *argv [])
 {
@@ -40,9 +39,7 @@ int main (int argc, char *argv [])
     zmq::socket_t s (ctx, ZMQ_REQ);
     s.connect (connect_to);
 
-    timeval start;
-    int rc = gettimeofday (&start, NULL);
-    assert (rc == 0);
+    void *watch = zmq_stopwatch_start ();
 
     for (int i = 0; i != roundtrip_count; i++) {
         zmq::message_t msg (message_size);
@@ -51,16 +48,9 @@ int main (int argc, char *argv [])
         assert (msg.size () == message_size);
     }
 
-    timeval end;
-    rc = gettimeofday (&end, NULL);
-    assert (rc == 0);
+    unsigned long elapsed = zmq_stopwatch_stop (watch);
 
-    end.tv_sec -= start.tv_sec;
-    start.tv_sec = 0;
-
-    double elapsed = (end.tv_sec * 1000000 + end.tv_usec) -
-        (start.tv_sec * 1000000 + start.tv_usec);
-    double latency = elapsed / (roundtrip_count * 2);
+    double latency = (double) elapsed / (roundtrip_count * 2);
 
     printf ("message size: %d [B]\n", (int) message_size);
     printf ("roundtrip count: %d\n", (int) roundtrip_count);

perf/cpp/remote_thr.cpp

@@ -20,7 +20,6 @@
 #include <zmq.hpp>
 #include <stdio.h>
 #include <stdlib.h>
-#include <unistd.h>
 #include <assert.h>
 #include <stddef.h>
 
@@ -45,7 +44,7 @@ int main (int argc, char *argv [])
         s.send (msg);
     }
 
-    sleep (10);
+    zmq_sleep (10);
 
     return 0;
 }