X-Git-Url: https://git.efficios.com/?a=blobdiff_plain;f=include%2Fbabeltrace%2Fctf-ir%2Fclock.h;h=e149d7fadb684f7ce0da904498ea62eb33cc9f0b;hb=61cf588beae752e5ddfc60b6b5310f769ac9e852;hp=cad2eec92df116bb4d936994dc439651eedc127d;hpb=ffa6d162196887d986aba83b4ec7b0d3ba3b250a;p=babeltrace.git

diff --git a/include/babeltrace/ctf-ir/clock.h b/include/babeltrace/ctf-ir/clock.h
index cad2eec9..e149d7fa 100644
--- 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.
+ * @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.
@@ -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,
-		uint64_t offset_s);
+		int64_t offset_s);
 
 /*
  * 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.
+ * @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.
@@ -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,
-		uint64_t offset);
+		int64_t offset);
 
 /*
  * 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).
  *
- * 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.
@@ -252,12 +260,14 @@ 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,
-		uint64_t time);
+		int64_t time);
 
 /*
  * bt_ctf_clock_get and bt_ctf_clock_put: increment and decrement the
  * refcount of the clock
  *
+ * You may also use bt_ctf_get() and bt_ctf_put() with clock objects.
+ *
  * These functions ensure that the clock won't be destroyed when it
  * is in use. The same number of get and put (plus one extra put to
  * release the initial reference done at creation) has to be done to