}
+/**
+ * Return a random time value between 0.5*r and 1.5*r.
+ *
+ * @param r input time for scaling
+ * @return randomized time
+ */
+struct GNUNET_TIME_Relative
+GNUNET_TIME_randomize (struct GNUNET_TIME_Relative r)
+{
+ double d = ((rand() % 1001) - 500) / 1000.0;
+
+ return relative_multiply_double (r,
+ d);
+}
+
+
/**
* Obtain the current time and make sure it is monotonically
* increasing. Guards against systems without an RTC or
struct GNUNET_DISK_FileHandle *fh;
fh = GNUNET_DISK_file_open (filename,
- GNUNET_DISK_OPEN_READWRITE | GNUNET_DISK_OPEN_CREATE,
- GNUNET_DISK_PERM_USER_WRITE | GNUNET_DISK_PERM_GROUP_WRITE |
- GNUNET_DISK_PERM_USER_READ | GNUNET_DISK_PERM_GROUP_READ);
+ GNUNET_DISK_OPEN_READWRITE | GNUNET_DISK_OPEN_CREATE,
+ GNUNET_DISK_PERM_USER_WRITE | GNUNET_DISK_PERM_GROUP_WRITE |
+ GNUNET_DISK_PERM_USER_READ | GNUNET_DISK_PERM_GROUP_READ);
if (NULL == fh)
{
- GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
- _("Failed to map `%s', cannot assure monotonic time!\n"),
- filename);
+ GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
+ _("Failed to map `%s', cannot assure monotonic time!\n"),
+ filename);
}
else
{
- off_t size;
-
- size = 0;
- GNUNET_break (GNUNET_OK ==
- GNUNET_DISK_file_handle_size (fh,
- &size));
- if (size < sizeof (*map))
- {
- struct GNUNET_TIME_AbsoluteNBO o;
-
- o = GNUNET_TIME_absolute_hton (now);
- if (sizeof (o) !=
- GNUNET_DISK_file_write (fh,
- &o,
- sizeof (o)))
- size = 0;
- else
- size = sizeof (o);
- }
- if (size == sizeof (*map))
- {
- map = GNUNET_DISK_file_map (fh,
- &map_handle,
- GNUNET_DISK_MAP_TYPE_READWRITE,
- sizeof (*map));
- if (NULL == map)
- GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
- _("Failed to map `%s', cannot assure monotonic time!\n"),
- filename);
- }
- else
- {
- GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
- _("Failed to setup monotonic time file `%s', cannot assure monotonic time!\n"),
- filename);
- }
+ off_t size;
+
+ size = 0;
+ GNUNET_break (GNUNET_OK ==
+ GNUNET_DISK_file_handle_size (fh,
+ &size));
+ if (size < (off_t) sizeof (*map))
+ {
+ struct GNUNET_TIME_AbsoluteNBO o;
+
+ o = GNUNET_TIME_absolute_hton (now);
+ if (sizeof (o) !=
+ GNUNET_DISK_file_write (fh,
+ &o,
+ sizeof (o)))
+ size = 0;
+ else
+ size = sizeof (o);
+ }
+ if (size == sizeof (*map))
+ {
+ map = GNUNET_DISK_file_map (fh,
+ &map_handle,
+ GNUNET_DISK_MAP_TYPE_READWRITE,
+ sizeof (*map));
+ if (NULL == map)
+ GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
+ _("Failed to map `%s', cannot assure monotonic time!\n"),
+ filename);
+ }
+ else
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
+ _("Failed to setup monotonic time file `%s', cannot assure monotonic time!\n"),
+ filename);
+ }
}
GNUNET_DISK_file_close (fh);
GNUNET_free (filename);