X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=tests%2Ftest-timeval.c;h=9896cf7372ff880b8af487c3819e47ee69c36c7b;hb=3305a0d09cfc6df443f02a1b5e2d39656cb79189;hp=3b39b4117963452bc8d370b25e374bcab43a6b66;hpb=40f0707cd9d105203c2b8b97a955b57aca426f13;p=openvswitch

diff --git a/tests/test-timeval.c b/tests/test-timeval.c
index 3b39b411..9896cf73 100644
--- a/tests/test-timeval.c
+++ b/tests/test-timeval.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2009, 2010 Nicira Networks.
+ * Copyright (c) 2009, 2010, 2011 Nicira, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -20,6 +20,7 @@
 
 #include <errno.h>
 #include <stdio.h>
+#include <stdlib.h>
 #include <sys/time.h>
 #include <sys/types.h>
 #include <unistd.h>
@@ -36,7 +37,7 @@ gettimeofday_in_msec(void)
 {
     struct timeval tv;
 
-    assert(!gettimeofday(&tv, NULL));
+    xgettimeofday(&tv);
     return timeval_to_msec(&tv);
 }
 
@@ -47,10 +48,11 @@ do_test(void)
      * setitimer()).  Then ensure that, if time has really advanced by
      * TIME_UPDATE_INTERVAL, then time_msec() reports that it advanced.
      */
-    long long int start_time_msec;
+    long long int start_time_msec, start_time_wall;
     long long int start_gtod;
 
     start_time_msec = time_msec();
+    start_time_wall = time_wall_msec();
     start_gtod = gettimeofday_in_msec();
     for (;;) {
         /* Wait up to 1 second.  Using select() to do the timeout avoids
@@ -68,7 +70,12 @@ do_test(void)
         }
 
         if (gettimeofday_in_msec() - start_gtod >= TIME_UPDATE_INTERVAL) {
-            assert(time_msec() - start_time_msec >= TIME_UPDATE_INTERVAL);
+            /* gettimeofday() and time_msec() have different granularities in
+             * their time sources.  Depending on the rounding used this could
+             * result in a slight difference, so we allow for 1 ms of slop. */
+            assert(time_msec() - start_time_msec >= TIME_UPDATE_INTERVAL - 1);
+            assert(time_wall_msec() - start_time_wall >=
+                                                      TIME_UPDATE_INTERVAL - 1);
             break;
         }
     }
@@ -86,25 +93,36 @@ main(int argc, char *argv[])
 {
     proctitle_init(argc, argv);
     set_program_name(argv[0]);
-    time_init();
 
     if (argc != 2) {
         usage();
     } else if (!strcmp(argv[1], "plain")) {
+        /* If we're not caching time there isn't much to test and SIGALRM won't
+         * be around to pull us out of the select() call, so just skip out */
+        if (!CACHE_TIME) {
+            exit (77);
+        }
+
         do_test();
     } else if (!strcmp(argv[1], "daemon")) {
         /* Test that time still advances even in a daemon.  This is an
          * interesting test because fork() cancels the interval timer. */
-        char cwd[1024];
+        char cwd[1024], *pidfile;
         FILE *success;
 
+        if (!CACHE_TIME) {
+            exit (77);
+        }
+
         assert(getcwd(cwd, sizeof cwd) == cwd);
 
         unlink("test-timeval.success");
 
         /* Daemonize, with a pidfile in the current directory. */
         set_detach();
-        set_pidfile(xasprintf("%s/test-timeval.pid", cwd));
+        pidfile = xasprintf("%s/test-timeval.pid", cwd);
+        set_pidfile(pidfile);
+        free(pidfile);
         set_no_chdir();
         daemonize();