void bt_ctf_clock_destroy(struct bt_object *obj);
BT_HIDDEN
-struct bt_ctf_clock *_bt_ctf_clock_create(void)
+bool bt_ctf_clock_is_valid(struct bt_ctf_clock *clock)
{
- struct bt_ctf_clock *clock = g_new0(
- struct bt_ctf_clock, 1);
-
- if (!clock) {
- goto end;
- }
-
- clock->precision = 1;
- clock->frequency = 1000000000;
- bt_object_init(clock, bt_ctf_clock_destroy);
-end:
- return clock;
+ return clock && clock->name;
}
-BT_HIDDEN
int bt_ctf_clock_set_name(struct bt_ctf_clock *clock,
const char *name)
{
int ret = 0;
+ if (!clock || clock->frozen) {
+ ret = -1;
+ goto end;
+ }
+
if (bt_ctf_validate_identifier(name)) {
ret = -1;
goto end;
struct bt_ctf_clock *bt_ctf_clock_create(const char *name)
{
int ret;
- struct bt_ctf_clock *clock = NULL;
+ struct bt_ctf_clock *clock = g_new0(struct bt_ctf_clock, 1);
- clock = _bt_ctf_clock_create();
if (!clock) {
goto error;
}
- ret = bt_ctf_clock_set_name(clock, name);
- if (ret) {
- goto error;
+ clock->precision = 1;
+ clock->frequency = 1000000000;
+ bt_object_init(clock, bt_ctf_clock_destroy);
+
+ if (name) {
+ ret = bt_ctf_clock_set_name(clock, name);
+ if (ret) {
+ goto error;
+ }
}
- ret = babeltrace_uuid_generate(clock->uuid);
+ ret = bt_uuid_generate(clock->uuid);
if (ret) {
goto error;
}
+ /*
+ * For backward compatibility reasons, a fresh clock can have
+ * a value because it could be added to a trace created by a
+ * CTF writer. As soon as this clock is added to a non-writer
+ * trace, then its value/time functions will be disabled.
+ */
+ clock->has_value = 1;
clock->uuid_set = 1;
return clock;
error:
return ret;
}
-uint64_t bt_ctf_clock_get_offset_s(struct bt_ctf_clock *clock)
+int bt_ctf_clock_get_offset_s(struct bt_ctf_clock *clock, int64_t *offset_s)
{
- uint64_t ret = -1ULL;
+ int ret = 0;
- if (!clock) {
+ if (!clock || !offset_s) {
+ ret = -1;
goto end;
}
- ret = clock->offset_s;
+ *offset_s = clock->offset_s;
end:
return ret;
}
-int bt_ctf_clock_set_offset_s(struct bt_ctf_clock *clock, uint64_t offset_s)
+int bt_ctf_clock_set_offset_s(struct bt_ctf_clock *clock, int64_t offset_s)
{
int ret = 0;
return ret;
}
-uint64_t bt_ctf_clock_get_offset(struct bt_ctf_clock *clock)
+int bt_ctf_clock_get_offset(struct bt_ctf_clock *clock, int64_t *offset)
{
- uint64_t ret = -1ULL;
+ int ret = 0;
- if (!clock) {
+ if (!clock || !offset) {
+ ret = -1;
goto end;
}
- ret = clock->offset;
+ *offset = clock->offset;
end:
return ret;
}
-int bt_ctf_clock_set_offset(struct bt_ctf_clock *clock, uint64_t offset)
+int bt_ctf_clock_set_offset(struct bt_ctf_clock *clock, int64_t offset)
{
int ret = 0;
return ret;
}
-uint64_t bt_ctf_clock_get_time(struct bt_ctf_clock *clock)
+uint64_t ns_from_value(uint64_t frequency, uint64_t value)
{
- uint64_t ret = -1ULL;
+ uint64_t ns;
- if (!clock) {
- goto end;
+ if (frequency == 1000000000) {
+ ns = value;
+ } else {
+ ns = (uint64_t) ((1e9 * (double) value) / (double) frequency);
}
- ret = clock->time;
-end:
- return ret;
+ return ns;
}
-int bt_ctf_clock_set_time(struct bt_ctf_clock *clock, uint64_t time)
+int bt_ctf_clock_set_time(struct bt_ctf_clock *clock, int64_t time)
{
int ret = 0;
+ int64_t value;
/* Timestamps are strictly monotonic */
- if (!clock || time < clock->time) {
+ if (!clock) {
ret = -1;
goto end;
}
- clock->time = time;
+
+ if (!clock->has_value) {
+ /*
+ * Clock belongs to a non-writer mode trace and thus
+ * this function is disabled.
+ */
+ ret = -1;
+ goto end;
+ }
+
+ /* Common case where cycles are actually nanoseconds */
+ if (clock->frequency == 1000000000) {
+ value = time;
+ } else {
+ value = (uint64_t) (((double) time *
+ (double) clock->frequency) / 1e9);
+ }
+
+ if (clock->value > value) {
+ /* Timestamps must be strictly monotonic. */
+ ret = -1;
+ goto end;
+ }
+
+ clock->value = value;
end:
return ret;
}
g_string_append(context->string, "};\n\n");
}
+BT_HIDDEN
+int bt_ctf_clock_get_value(struct bt_ctf_clock *clock, uint64_t *value)
+{
+ int ret = 0;
+
+ if (!clock || !value) {
+ ret = -1;
+ goto end;
+ }
+
+ *value = clock->value;
+end:
+ return ret;
+}
+
static
void bt_ctf_clock_destroy(struct bt_object *obj)
{
g_free(clock);
}
+
+static
+void bt_ctf_clock_value_destroy(struct bt_object *obj)
+{
+ struct bt_ctf_clock_value *value;
+
+ if (!obj) {
+ return;
+ }
+
+ value = container_of(obj, struct bt_ctf_clock_value, base);
+ bt_put(value->clock_class);
+ g_free(value);
+}
+
+struct bt_ctf_clock_value *bt_ctf_clock_value_create(
+ struct bt_ctf_clock *clock, uint64_t value)
+{
+ struct bt_ctf_clock_value *ret = NULL;
+
+ if (!clock) {
+ goto end;
+ }
+
+ ret = g_new0(struct bt_ctf_clock_value, 1);
+ if (!ret) {
+ goto end;
+ }
+
+ bt_object_init(ret, bt_ctf_clock_value_destroy);
+ ret->clock_class = bt_get(clock);
+ ret->value = value;
+end:
+ return ret;
+}
+
+int bt_ctf_clock_value_get_value(
+ struct bt_ctf_clock_value *clock_value, uint64_t *raw_value)
+{
+ int ret = 0;
+
+ if (!clock_value || !raw_value) {
+ ret = -1;
+ goto end;
+ }
+
+ *raw_value = clock_value->value;
+end:
+ return ret;
+}
+
+int bt_ctf_clock_value_get_value_ns_from_epoch(struct bt_ctf_clock_value *value,
+ int64_t *ret_value_ns)
+{
+ int ret = 0;
+ int64_t ns;
+
+ if (!value || !ret_value_ns) {
+ ret = -1;
+ goto end;
+ }
+
+ /* Initialize nanosecond timestamp to clock's offset in seconds. */
+ ns = value->clock_class->offset_s * 1000000000;
+
+ /* Add offset in cycles, converted to nanoseconds. */
+ ns += ns_from_value(value->clock_class->frequency,
+ value->clock_class->offset);
+
+ /* Add given value, converter to nanoseconds. */
+ ns += ns_from_value(value->clock_class->frequency, value->value);
+
+ *ret_value_ns = ns;
+end:
+ return ret;
+}
projects / babeltrace.git / blobdiff