Handle negative time and offset from Epoch

[babeltrace.git] / include / babeltrace / ctf-ir / clock.h

diff --git a/include/babeltrace/ctf-ir/clock.h b/include/babeltrace/ctf-ir/clock.h
index 1ac8ca9e36d99693d312914ec82e6dc80a767cb0..e149d7fadb684f7ce0da904498ea62eb33cc9f0b 100644 (file)
--- a/include/babeltrace/ctf-ir/clock.h
+++ b/include/babeltrace/ctf-ir/clock.h
@@ -139,10 +139,12 @@ extern int bt_ctf_clock_set_precision(struct bt_ctf_clock *clock,
  * Get the clock's offset in seconds from POSIX.1 Epoch, 1970-01-01.
  *
  * @param clock Clock instance.
  * Get the clock's offset in seconds from POSIX.1 Epoch, 1970-01-01.
  *
  * @param clock Clock instance.

+ * @param offset_s Pointer to clock offset in seconds (output).

  *
  *

- * Returns the clock's offset in seconds, -1ULL on error.
+ * Returns 0 on success, a negative value on error.

  */
  */

-extern uint64_t bt_ctf_clock_get_offset_s(struct bt_ctf_clock *clock);
+extern int bt_ctf_clock_get_offset_s(struct bt_ctf_clock *clock,
+               int64_t *offset_s);

 
 /*
  * bt_ctf_clock_set_offset_s: set a clock's offset in seconds.
 
 /*
  * bt_ctf_clock_set_offset_s: set a clock's offset in seconds.


@@ -156,7 +158,7 @@ extern uint64_t bt_ctf_clock_get_offset_s(struct bt_ctf_clock *clock);
  * Returns 0 on success, a negative value on error.
  */
 extern int bt_ctf_clock_set_offset_s(struct bt_ctf_clock *clock,
  * Returns 0 on success, a negative value on error.
  */
 extern int bt_ctf_clock_set_offset_s(struct bt_ctf_clock *clock,

-               uint64_t offset_s);
+               int64_t offset_s);

 
 /*
  * bt_ctf_clock_get_offset: get a clock's offset in ticks.
 
 /*
  * bt_ctf_clock_get_offset: get a clock's offset in ticks.


@@ -164,10 +166,12 @@ extern int bt_ctf_clock_set_offset_s(struct bt_ctf_clock *clock,
  * Get the clock's offset in ticks from Epoch + offset_t.
  *
  * @param clock Clock instance.
  * Get the clock's offset in ticks from Epoch + offset_t.
  *
  * @param clock Clock instance.

+ * @param offset Clock offset in ticks from Epoch + offset_s (output).

  *
  *

- * Returns the clock's offset in ticks from Epoch + offset_s, -1ULL on error.
+ * Returns 0 on success, a negative value on error.

  */
  */

-extern uint64_t bt_ctf_clock_get_offset(struct bt_ctf_clock *clock);
+extern int bt_ctf_clock_get_offset(struct bt_ctf_clock *clock,
+               int64_t *offset);

 
 /*
  * bt_ctf_clock_set_offset: set a clock's offset in ticks.
 
 /*
  * bt_ctf_clock_set_offset: set a clock's offset in ticks.


@@ -180,7 +184,7 @@ extern uint64_t bt_ctf_clock_get_offset(struct bt_ctf_clock *clock);
  * Returns 0 on success, a negative value on error.
  */
 extern int bt_ctf_clock_set_offset(struct bt_ctf_clock *clock,
  * Returns 0 on success, a negative value on error.
  */
 extern int bt_ctf_clock_set_offset(struct bt_ctf_clock *clock,

-               uint64_t offset);
+               int64_t offset);

 
 /*
  * bt_ctf_clock_get_is_absolute: get a clock's absolute attribute.
 
 /*
  * bt_ctf_clock_get_is_absolute: get a clock's absolute attribute.


@@ -239,9 +243,13 @@ extern int bt_ctf_clock_set_uuid(struct bt_ctf_clock *clock,
  * Get the current time in nanoseconds since the clock's origin (offset and
  * offset_s attributes).
  *
  * Get the current time in nanoseconds since the clock's origin (offset and
  * offset_s attributes).
  *

- * Returns the clock's current time value, -1ULL on error.
+ * @param clock Clock instance.
+ * @param time Clock current time value (output).
+ *
+ * Returns 0 on success, a negative value on error.

  */
  */

-extern uint64_t bt_ctf_clock_get_time(struct bt_ctf_clock *clock);
+extern int bt_ctf_clock_get_time(struct bt_ctf_clock *clock,
+               int64_t *time);

 
 /*
  * bt_ctf_clock_set_time: set a clock's current time value.
 
 /*
  * bt_ctf_clock_set_time: set a clock's current time value.


@@ -252,7 +260,7 @@ extern uint64_t bt_ctf_clock_get_time(struct bt_ctf_clock *clock);
  * Returns 0 on success, a negative value on error.
  */
 extern int bt_ctf_clock_set_time(struct bt_ctf_clock *clock,
  * Returns 0 on success, a negative value on error.
  */
 extern int bt_ctf_clock_set_time(struct bt_ctf_clock *clock,

-               uint64_t time);
+               int64_t time);

 
 /*
  * bt_ctf_clock_get and bt_ctf_clock_put: increment and decrement the
 
 /*
  * bt_ctf_clock_get and bt_ctf_clock_put: increment and decrement the