#include "platform.h"
#include "gnunet_time_lib.h"
+#define LOG(kind,...) GNUNET_log_from (kind, "util", __VA_ARGS__)
+
+/**
+ * Variable used to simulate clock skew. Used for testing, never in production.
+ */
+static long long timestamp_offset;
+
+/**
+ * Set the timestamp offset for this instance.
+ *
+ * @param offset the offset to skew the locale time by
+ */
+void
+GNUNET_TIME_set_offset (long long offset)
+{
+ timestamp_offset = offset;
+}
/**
* Get the current time (works just as "time", just that we use the
struct timeval tv;
GETTIMEOFDAY (&tv, NULL);
- ret.value =
- (uint64_t) (((uint64_t) tv.tv_sec * 1000LL) +
- ((uint64_t) tv.tv_usec / 1000LL));
+ ret.abs_value =
+ (uint64_t) (((uint64_t) tv.tv_sec * 1000LL) +
+ ((uint64_t) tv.tv_usec / 1000LL)) + timestamp_offset;
return ret;
}
GNUNET_TIME_relative_get_zero ()
{
static struct GNUNET_TIME_Relative zero;
+
return zero;
}
GNUNET_TIME_absolute_get_zero ()
{
static struct GNUNET_TIME_Absolute zero;
+
return zero;
}
struct GNUNET_TIME_Relative
GNUNET_TIME_relative_get_forever ()
{
- static struct GNUNET_TIME_Relative forever = { (uint64_t) - 1LL };
+ static struct GNUNET_TIME_Relative forever = { UINT64_MAX };
return forever;
}
struct GNUNET_TIME_Absolute
GNUNET_TIME_absolute_get_forever ()
{
- static struct GNUNET_TIME_Absolute forever = { (uint64_t) - 1LL };
+ static struct GNUNET_TIME_Absolute forever = { UINT64_MAX };
return forever;
}
GNUNET_TIME_relative_to_absolute (struct GNUNET_TIME_Relative rel)
{
struct GNUNET_TIME_Absolute ret;
- if (rel.value == (uint64_t) - 1LL)
+
+ if (rel.rel_value == UINT64_MAX)
return GNUNET_TIME_absolute_get_forever ();
struct GNUNET_TIME_Absolute now = GNUNET_TIME_absolute_get ();
- if (rel.value + now.value < rel.value)
- {
- GNUNET_break (0); /* overflow... */
- return GNUNET_TIME_absolute_get_forever ();
- }
- ret.value = rel.value + now.value;
+
+ if (rel.rel_value + now.abs_value < rel.rel_value)
+ {
+ GNUNET_break (0); /* overflow... */
+ return GNUNET_TIME_absolute_get_forever ();
+ }
+ ret.abs_value = rel.rel_value + now.abs_value;
return ret;
}
* @return timestamp that is smaller
*/
struct GNUNET_TIME_Relative
-GNUNET_TIME_relative_min (struct
- GNUNET_TIME_Relative
- t1, struct GNUNET_TIME_Relative t2)
+GNUNET_TIME_relative_min (struct GNUNET_TIME_Relative t1,
+ struct GNUNET_TIME_Relative t2)
{
- return (t1.value < t2.value) ? t1 : t2;
+ return (t1.rel_value < t2.rel_value) ? t1 : t2;
}
* @return timestamp that is larger
*/
struct GNUNET_TIME_Relative
-GNUNET_TIME_relative_max (struct
- GNUNET_TIME_Relative
- t1, struct GNUNET_TIME_Relative t2)
+GNUNET_TIME_relative_max (struct GNUNET_TIME_Relative t1,
+ struct GNUNET_TIME_Relative t2)
{
- return (t1.value > t2.value) ? t1 : t2;
+ return (t1.rel_value > t2.rel_value) ? t1 : t2;
}
* @return timestamp that is smaller
*/
struct GNUNET_TIME_Absolute
-GNUNET_TIME_absolute_min (struct
- GNUNET_TIME_Absolute
- t1, struct GNUNET_TIME_Absolute t2)
+GNUNET_TIME_absolute_min (struct GNUNET_TIME_Absolute t1,
+ struct GNUNET_TIME_Absolute t2)
{
- return (t1.value < t2.value) ? t1 : t2;
+ return (t1.abs_value < t2.abs_value) ? t1 : t2;
}
*
* @param t1 first timestamp
* @param t2 other timestamp
- * @return timestamp that is smaller
+ * @return timestamp that is bigger
*/
struct GNUNET_TIME_Absolute
-GNUNET_TIME_absolute_max (struct
- GNUNET_TIME_Absolute
- t1, struct GNUNET_TIME_Absolute t2)
+GNUNET_TIME_absolute_max (struct GNUNET_TIME_Absolute t1,
+ struct GNUNET_TIME_Absolute t2)
{
- return (t1.value > t2.value) ? t1 : t2;
+ return (t1.abs_value > t2.abs_value) ? t1 : t2;
}
GNUNET_TIME_absolute_get_remaining (struct GNUNET_TIME_Absolute future)
{
struct GNUNET_TIME_Relative ret;
- if (future.value == (uint64_t) - 1LL)
+
+ if (future.abs_value == UINT64_MAX)
return GNUNET_TIME_relative_get_forever ();
struct GNUNET_TIME_Absolute now = GNUNET_TIME_absolute_get ();
- if (now.value > future.value)
+
+ if (now.abs_value > future.abs_value)
return GNUNET_TIME_relative_get_zero ();
- ret.value = future.value - now.value;
+ ret.rel_value = future.abs_value - now.abs_value;
return ret;
}
/**
* Compute the time difference between the given start and end times.
* Use this function instead of actual subtraction to ensure that
- * "FOREVER" and overflows are handeled correctly.
+ * "FOREVER" and overflows are handled correctly.
*
* @return 0 if start >= end; FOREVER if end==FOREVER; otherwise end - start
*/
struct GNUNET_TIME_Absolute end)
{
struct GNUNET_TIME_Relative ret;
- if (end.value == (uint64_t) - 1LL)
+
+ if (end.abs_value == UINT64_MAX)
return GNUNET_TIME_relative_get_forever ();
- if (end.value < start.value)
+ if (end.abs_value < start.abs_value)
return GNUNET_TIME_relative_get_zero ();
- ret.value = end.value - start.value;
+ ret.rel_value = end.abs_value - start.abs_value;
return ret;
}
/**
* Get the duration of an operation as the
- * difference of the current time and the given start time "hence".
+ * difference of the current time and the given start time "whence".
*
- * @return aborts if hence==FOREVER, 0 if hence > now, otherwise now-hence.
+ * @return aborts if whence==FOREVER, 0 if whence > now, otherwise now-whence.
*/
struct GNUNET_TIME_Relative
-GNUNET_TIME_absolute_get_duration (struct GNUNET_TIME_Absolute hence)
+GNUNET_TIME_absolute_get_duration (struct GNUNET_TIME_Absolute whence)
{
struct GNUNET_TIME_Absolute now;
struct GNUNET_TIME_Relative ret;
now = GNUNET_TIME_absolute_get ();
- GNUNET_assert (hence.value != (uint64_t) - 1LL);
- if (hence.value > now.value)
+ GNUNET_assert (whence.abs_value != UINT64_MAX);
+ if (whence.abs_value > now.abs_value)
return GNUNET_TIME_relative_get_zero ();
- ret.value = now.value - hence.value;
+ ret.rel_value = now.abs_value - whence.abs_value;
return ret;
}
{
struct GNUNET_TIME_Absolute ret;
- if ((start.value == (uint64_t) - 1LL) ||
- (duration.value == (uint64_t) - 1LL))
+ if ((start.abs_value == UINT64_MAX) || (duration.rel_value == UINT64_MAX))
+ return GNUNET_TIME_absolute_get_forever ();
+ if (start.abs_value + duration.rel_value < start.abs_value)
+ {
+ GNUNET_break (0);
return GNUNET_TIME_absolute_get_forever ();
- if (start.value + duration.value < start.value)
- {
- GNUNET_break (0);
- return GNUNET_TIME_absolute_get_forever ();
- }
- ret.value = start.value + duration.value;
+ }
+ ret.abs_value = start.abs_value + duration.rel_value;
+ return ret;
+}
+
+
+/**
+ * Subtract a given relative duration from the
+ * given start time.
+ *
+ * @param start some absolute time
+ * @param duration some relative time to subtract
+ * @return ZERO if start <= duration, or FOREVER if start time is FOREVER; start-duration otherwise
+ */
+struct GNUNET_TIME_Absolute
+GNUNET_TIME_absolute_subtract (struct GNUNET_TIME_Absolute start,
+ struct GNUNET_TIME_Relative duration)
+{
+ struct GNUNET_TIME_Absolute ret;
+
+ if (start.abs_value <= duration.rel_value)
+ return GNUNET_TIME_UNIT_ZERO_ABS;
+ if (start.abs_value == GNUNET_TIME_UNIT_FOREVER_ABS.abs_value)
+ return GNUNET_TIME_UNIT_FOREVER_ABS;
+ ret.abs_value = start.abs_value - duration.rel_value;
return ret;
}
+
/**
* Multiply relative time by a given factor.
*
unsigned int factor)
{
struct GNUNET_TIME_Relative ret;
+
if (factor == 0)
return GNUNET_TIME_relative_get_zero ();
- ret.value = rel.value * (unsigned long long) factor;
- if (ret.value / factor != rel.value)
- {
- GNUNET_break (0);
- return GNUNET_TIME_relative_get_forever ();
- }
+ ret.rel_value = rel.rel_value * (unsigned long long) factor;
+ if (ret.rel_value / factor != rel.rel_value)
+ {
+ GNUNET_break (0);
+ return GNUNET_TIME_relative_get_forever ();
+ }
return ret;
}
*/
struct GNUNET_TIME_Relative
GNUNET_TIME_relative_divide (struct GNUNET_TIME_Relative rel,
- unsigned int factor)
+ unsigned int factor)
{
struct GNUNET_TIME_Relative ret;
- if ( (factor == 0) ||
- (rel.value == GNUNET_TIME_UNIT_FOREVER_REL.value) )
+
+ if ((factor == 0) ||
+ (rel.rel_value == GNUNET_TIME_UNIT_FOREVER_REL.rel_value))
return GNUNET_TIME_UNIT_FOREVER_REL;
- ret.value = rel.value / (unsigned long long) factor;
+ ret.rel_value = rel.rel_value / (unsigned long long) factor;
return ret;
}
/**
- * Calculate the estimate time of arrival/completion
+ * Calculate the estimate time of arrival/completion
* for an operation.
*
* @param start when did the operation start?
* assuming it continues at the same speed
*/
struct GNUNET_TIME_Relative
-GNUNET_TIME_calculate_eta (struct GNUNET_TIME_Absolute start,
- uint64_t finished, uint64_t total)
+GNUNET_TIME_calculate_eta (struct GNUNET_TIME_Absolute start, uint64_t finished,
+ uint64_t total)
{
struct GNUNET_TIME_Relative dur;
double exp;
if (finished == 0)
return GNUNET_TIME_UNIT_FOREVER_REL;
dur = GNUNET_TIME_absolute_get_duration (start);
- exp = ((double) dur.value) * ((double) total) / ((double) finished);
- ret.value = ((uint64_t) exp) - dur.value;
+ exp = ((double) dur.rel_value) * ((double) total) / ((double) finished);
+ ret.rel_value = ((uint64_t) exp) - dur.rel_value;
return ret;
}
/**
* Add relative times together.
*
+ * @param a1 first timestamp
+ * @param a2 second timestamp
* @return FOREVER if either argument is FOREVER or on overflow; a1+a2 otherwise
*/
struct GNUNET_TIME_Relative
{
struct GNUNET_TIME_Relative ret;
- if ((a1.value == (uint64_t) - 1LL) || (a2.value == (uint64_t) - 1LL))
+ if ((a1.rel_value == UINT64_MAX) || (a2.rel_value == UINT64_MAX))
+ return GNUNET_TIME_relative_get_forever ();
+ if (a1.rel_value + a2.rel_value < a1.rel_value)
+ {
+ GNUNET_break (0);
return GNUNET_TIME_relative_get_forever ();
- if (a1.value + a2.value < a1.value)
- {
- GNUNET_break (0);
- return GNUNET_TIME_relative_get_forever ();
- }
- ret.value = a1.value + a2.value;
+ }
+ ret.rel_value = a1.rel_value + a2.rel_value;
+ return ret;
+}
+
+
+/**
+ * Subtract relative timestamp from the other.
+ *
+ * @param a1 first timestamp
+ * @param a2 second timestamp
+ * @return ZERO if a2>=a1 (including both FOREVER), FOREVER if a1 is FOREVER, a1-a2 otherwise
+ */
+struct GNUNET_TIME_Relative
+GNUNET_TIME_relative_subtract (struct GNUNET_TIME_Relative a1,
+ struct GNUNET_TIME_Relative a2)
+{
+ struct GNUNET_TIME_Relative ret;
+
+ if (a2.rel_value >= a1.rel_value)
+ return GNUNET_TIME_relative_get_zero ();
+ if (a1.rel_value == UINT64_MAX)
+ return GNUNET_TIME_relative_get_forever ();
+ ret.rel_value = a1.rel_value - a2.rel_value;
return ret;
}
/**
* Convert relative time to network byte order.
+ *
+ * @param a time to convert
+ * @return time in network byte order
*/
struct GNUNET_TIME_RelativeNBO
GNUNET_TIME_relative_hton (struct GNUNET_TIME_Relative a)
{
struct GNUNET_TIME_RelativeNBO ret;
- ret.value__ = GNUNET_htonll (a.value);
+
+ ret.rel_value__ = GNUNET_htonll (a.rel_value);
return ret;
}
/**
* Convert relative time from network byte order.
+ *
+ * @param a time to convert
+ * @return time in host byte order
*/
struct GNUNET_TIME_Relative
GNUNET_TIME_relative_ntoh (struct GNUNET_TIME_RelativeNBO a)
{
struct GNUNET_TIME_Relative ret;
- ret.value = GNUNET_ntohll (a.value__);
+
+ ret.rel_value = GNUNET_ntohll (a.rel_value__);
return ret;
}
/**
* Convert absolute time to network byte order.
+ *
+ * @param a time to convert
+ * @return time in network byte order
*/
struct GNUNET_TIME_AbsoluteNBO
GNUNET_TIME_absolute_hton (struct GNUNET_TIME_Absolute a)
{
struct GNUNET_TIME_AbsoluteNBO ret;
- ret.value__ = GNUNET_htonll (a.value);
+
+ ret.abs_value__ = GNUNET_htonll (a.abs_value);
return ret;
}
/**
* Convert absolute time from network byte order.
+ *
+ * @param a time to convert
+ * @return time in host byte order
*/
struct GNUNET_TIME_Absolute
GNUNET_TIME_absolute_ntoh (struct GNUNET_TIME_AbsoluteNBO a)
{
struct GNUNET_TIME_Absolute ret;
- ret.value = GNUNET_ntohll (a.value__);
+
+ ret.abs_value = GNUNET_ntohll (a.abs_value__);
return ret;
}
+/**
+ * Convert a relative time to a string.
+ * This is one of the very few calls in the entire API that is
+ * NOT reentrant!
+ *
+ * @param time the time to print
+ *
+ * @return string form of the time (as milliseconds)
+ */
+const char *
+GNUNET_TIME_relative_to_string (struct GNUNET_TIME_Relative time)
+{
+ static char time_string[21];
+
+ memset (time_string, 0, sizeof (time_string));
+
+ sprintf (time_string, "%llu", (unsigned long long) time.rel_value);
+ return (const char *) time_string;
+}
+
/* end of time.c */
projects / oweals / gnunet.git / blobdiff