/*
* clock.c
*
- * Babeltrace CTF Writer
+ * Babeltrace CTF IR - Clock
*
* Copyright 2013, 2014 Jérémie Galarneau <jeremie.galarneau@efficios.com>
*
* SOFTWARE.
*/
-#include <babeltrace/ctf-writer/clock.h>
#include <babeltrace/ctf-ir/clock-internal.h>
+#include <babeltrace/ctf-ir/utils.h>
+#include <babeltrace/ref.h>
#include <babeltrace/ctf-writer/writer-internal.h>
+#include <babeltrace/object-internal.h>
#include <babeltrace/compiler.h>
#include <inttypes.h>
static
-void bt_ctf_clock_destroy(struct bt_ctf_ref *ref);
+void bt_ctf_clock_destroy(struct bt_object *obj);
-struct bt_ctf_clock *bt_ctf_clock_create(const char *name)
+BT_HIDDEN
+bool bt_ctf_clock_is_valid(struct bt_ctf_clock *clock)
{
- struct bt_ctf_clock *clock = NULL;
+ return clock && clock->name;
+}
- if (validate_identifier(name)) {
- goto error;
+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;
}
- clock = g_new0(struct bt_ctf_clock, 1);
- if (!clock) {
- goto error;
+ if (bt_ctf_validate_identifier(name)) {
+ ret = -1;
+ goto end;
+ }
+
+ if (clock->name) {
+ g_string_assign(clock->name, name);
+ } else {
+ clock->name = g_string_new(name);
+ if (!clock->name) {
+ ret = -1;
+ goto end;
+ }
}
- clock->name = g_string_new(name);
- if (!clock->name) {
- goto error_destroy;
+end:
+ return ret;
+}
+
+struct bt_ctf_clock *bt_ctf_clock_create(const char *name)
+{
+ int ret;
+ struct bt_ctf_clock *clock = g_new0(struct bt_ctf_clock, 1);
+
+ if (!clock) {
+ goto error;
}
clock->precision = 1;
clock->frequency = 1000000000;
- uuid_generate(clock->uuid);
- bt_ctf_ref_init(&clock->ref_count);
+ bt_object_init(clock, bt_ctf_clock_destroy);
+
+ if (name) {
+ ret = bt_ctf_clock_set_name(clock, name);
+ if (ret) {
+ goto error;
+ }
+ }
+
+ 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_destroy:
- bt_ctf_clock_destroy(&clock->ref_count);
error:
- return NULL;
+ BT_PUT(clock);
+ return clock;
}
const char *bt_ctf_clock_get_name(struct bt_ctf_clock *clock)
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;
{
const unsigned char *ret;
- if (!clock) {
+ if (!clock || !clock->uuid_set) {
ret = NULL;
goto end;
}
{
int ret = 0;
- if (!clock || !uuid) {
+ if (!clock || !uuid || clock->frozen) {
ret = -1;
goto end;
}
memcpy(clock->uuid, uuid, sizeof(uuid_t));
+ clock->uuid_set = 1;
end:
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;
+ }
+
+
+ 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->time = time;
+ clock->value = value;
end:
return ret;
}
void bt_ctf_clock_get(struct bt_ctf_clock *clock)
{
- if (!clock) {
- return;
- }
-
- bt_ctf_ref_get(&clock->ref_count);
+ bt_get(clock);
}
void bt_ctf_clock_put(struct bt_ctf_clock *clock)
{
- if (!clock) {
- return;
- }
-
- bt_ctf_ref_put(&clock->ref_count, bt_ctf_clock_destroy);
+ bt_put(clock);
}
BT_HIDDEN
uuid[4], uuid[5], uuid[6], uuid[7],
uuid[8], uuid[9], uuid[10], uuid[11],
uuid[12], uuid[13], uuid[14], uuid[15]);
- if (clock->description->len) {
+ if (clock->description) {
g_string_append_printf(context->string, "\tdescription = \"%s\";\n",
clock->description->str);
}
}
static
-void bt_ctf_clock_destroy(struct bt_ctf_ref *ref)
+void bt_ctf_clock_destroy(struct bt_object *obj)
{
struct bt_ctf_clock *clock;
- if (!ref) {
- return;
- }
-
- clock = container_of(ref, struct bt_ctf_clock, ref_count);
+ clock = container_of(obj, struct bt_ctf_clock, base);
if (clock->name) {
g_string_free(clock->name, TRUE);
}
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