[babeltrace.git] / lib / ctf-ir / clock-class.c

/*
 * clock-class.c
 *
 * Babeltrace CTF IR - Clock class
 *
 * Copyright 2013, 2014 Jérémie Galarneau <jeremie.galarneau@efficios.com>
 *
 * Author: Jérémie Galarneau <jeremie.galarneau@efficios.com>
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */

#define BT_LOG_TAG "CLOCK-CLASS"
#include <babeltrace/lib-logging-internal.h>

#include <babeltrace/assert-pre-internal.h>
#include <babeltrace/compat/uuid-internal.h>
#include <babeltrace/ctf-ir/clock-class-internal.h>
#include <babeltrace/ctf-ir/clock-value-internal.h>
#include <babeltrace/ctf-ir/utils-internal.h>
#include <babeltrace/ref.h>
#include <babeltrace/compiler-internal.h>
#include <babeltrace/types.h>
#include <babeltrace/compat/string-internal.h>
#include <inttypes.h>
#include <babeltrace/object-internal.h>
#include <babeltrace/assert-internal.h>

#define BT_ASSERT_PRE_CLOCK_CLASS_HOT(_cc) \
	BT_ASSERT_PRE_HOT((_cc), "Clock class", ": %!+K", (_cc))

static
void destroy_clock_class(struct bt_object *obj)
{
	struct bt_clock_class *clock_class = (void *) obj;

	BT_LIB_LOGD("Destroying clock class: %!+K", clock_class);

	if (clock_class->name.str) {
		g_string_free(clock_class->name.str, TRUE);
	}

	if (clock_class->description.str) {
		g_string_free(clock_class->description.str, TRUE);
	}

	bt_object_pool_finalize(&clock_class->cv_pool);
	g_free(clock_class);
}

static
void free_clock_value(struct bt_clock_value *clock_value,
		struct bt_clock_class *clock_class)
{
	bt_clock_value_destroy(clock_value);
}

static inline
void set_base_offset(struct bt_clock_class *clock_class)
{
	uint64_t offset_cycles_ns;

	/* Initialize nanosecond timestamp to clock's offset in seconds */
	if (clock_class->offset_seconds <= (INT64_MIN / INT64_C(1000000000) - 1) ||
			clock_class->offset_seconds >= (INT64_MAX / INT64_C(1000000000)) - 1) {
		/*
		 * Overflow: offset in seconds converted to nanoseconds
		 * is outside the int64_t range. We also subtract 1 here
		 * to leave "space" for the offset in cycles converted
		 * to nanoseconds (which is always less than 1 second by
		 * contract).
		 */
		clock_class->base_offset.overflows = true;
		goto end;
	}

	/* Offset (seconds) to nanoseconds */
	clock_class->base_offset.value_ns = clock_class->offset_seconds *
		INT64_C(1000000000);

	/* Add offset in cycles */
	BT_ASSERT(clock_class->offset_cycles < clock_class->frequency);
	offset_cycles_ns = bt_util_ns_from_value(clock_class->frequency,
		clock_class->offset_cycles);
	BT_ASSERT(offset_cycles_ns < 1000000000);
	clock_class->base_offset.value_ns += (int64_t) offset_cycles_ns;
	clock_class->base_offset.overflows = false;

end:
	return;
}

struct bt_clock_class *bt_clock_class_create(void)
{
	int ret;
	struct bt_clock_class *clock_class = NULL;

	BT_LOGD_STR("Creating default clock class object");

	clock_class = g_new0(struct bt_clock_class, 1);
	if (!clock_class) {
		BT_LOGE_STR("Failed to allocate one clock class.");
		goto error;
	}

	bt_object_init_shared(&clock_class->base, destroy_clock_class);
	clock_class->name.str = g_string_new(NULL);
	if (!clock_class->name.str) {
		BT_LOGE_STR("Failed to allocate a GString.");
		goto error;
	}

	clock_class->description.str = g_string_new(NULL);
	if (!clock_class->description.str) {
		BT_LOGE_STR("Failed to allocate a GString.");
		goto error;
	}

	clock_class->frequency = UINT64_C(1000000000);
	clock_class->is_absolute = BT_TRUE;
	set_base_offset(clock_class);
	ret = bt_object_pool_initialize(&clock_class->cv_pool,
		(bt_object_pool_new_object_func) bt_clock_value_new,
		(bt_object_pool_destroy_object_func)
			free_clock_value,
		clock_class);
	if (ret) {
		BT_LOGE("Failed to initialize clock value pool: ret=%d",
			ret);
		goto error;
	}

	BT_LIB_LOGD("Created clock class object: %!+K", clock_class);
	goto end;

error:
	BT_PUT(clock_class);

end:
	return clock_class;
}

const char *bt_clock_class_get_name(
		struct bt_clock_class *clock_class)
{
	BT_ASSERT_PRE_NON_NULL(clock_class, "Clock class");
	return clock_class->name.value;
}

int bt_clock_class_set_name(struct bt_clock_class *clock_class,
		const char *name)
{
	BT_ASSERT_PRE_NON_NULL(clock_class, "Clock class");
	BT_ASSERT_PRE_NON_NULL(name, "Name");
	BT_ASSERT_PRE_CLOCK_CLASS_HOT(clock_class);
	g_string_assign(clock_class->name.str, name);
	clock_class->name.value = clock_class->name.str->str;
	BT_LIB_LOGV("Set clock class's name: %!+K", clock_class);
	return 0;
}

const char *bt_clock_class_get_description(struct bt_clock_class *clock_class)
{
	BT_ASSERT_PRE_NON_NULL(clock_class, "Clock class");
	return clock_class->description.value;
}

int bt_clock_class_set_description(struct bt_clock_class *clock_class,
		const char *descr)
{
	BT_ASSERT_PRE_NON_NULL(clock_class, "Clock class");
	BT_ASSERT_PRE_NON_NULL(descr, "Description");
	BT_ASSERT_PRE_CLOCK_CLASS_HOT(clock_class);
	g_string_assign(clock_class->description.str, descr);
	clock_class->description.value = clock_class->description.str->str;
	BT_LIB_LOGV("Set clock class's description: %!+K",
		clock_class);
	return 0;
}

uint64_t bt_clock_class_get_frequency(struct bt_clock_class *clock_class)
{
	BT_ASSERT_PRE_NON_NULL(clock_class, "Clock class");
	return clock_class->frequency;
}

int bt_clock_class_set_frequency(struct bt_clock_class *clock_class,
		uint64_t frequency)
{
	BT_ASSERT_PRE_NON_NULL(clock_class, "Clock class");
	BT_ASSERT_PRE_CLOCK_CLASS_HOT(clock_class);
	BT_ASSERT_PRE(frequency != UINT64_C(-1) && frequency != 0,
		"Invalid frequency: %![cc-]+K, new-freq=%" PRIu64,
		clock_class, frequency);
	BT_ASSERT_PRE(clock_class->offset_cycles < frequency,
		"Offset (cycles) is greater than clock class's frequency: "
		"%![cc-]+K, new-freq=%" PRIu64, clock_class, frequency);
	clock_class->frequency = frequency;
	set_base_offset(clock_class);
	BT_LIB_LOGV("Set clock class's frequency: %!+K", clock_class);
	return 0;
}

uint64_t bt_clock_class_get_precision(struct bt_clock_class *clock_class)
{
	BT_ASSERT_PRE_NON_NULL(clock_class, "Clock class");
	return clock_class->precision;
}

int bt_clock_class_set_precision(struct bt_clock_class *clock_class,
		uint64_t precision)
{
	BT_ASSERT_PRE_NON_NULL(clock_class, "Clock class");
	BT_ASSERT_PRE_CLOCK_CLASS_HOT(clock_class);
	BT_ASSERT_PRE(precision != UINT64_C(-1),
		"Invalid precision: %![cc-]+K, new-precision=%" PRIu64,
		clock_class, precision);
	clock_class->precision = precision;
	BT_LIB_LOGV("Set clock class's precision: %!+K", clock_class);
	return 0;
}

void bt_clock_class_get_offset(struct bt_clock_class *clock_class,
		int64_t *seconds, uint64_t *cycles)
{
	BT_ASSERT_PRE_NON_NULL(clock_class, "Clock class");
	BT_ASSERT_PRE_NON_NULL(seconds, "Seconds (output)");
	BT_ASSERT_PRE_NON_NULL(cycles, "Cycles (output)");
	*seconds = clock_class->offset_seconds;
	*cycles = clock_class->offset_cycles;
}

int bt_clock_class_set_offset(struct bt_clock_class *clock_class,
		int64_t seconds, uint64_t cycles)
{
	BT_ASSERT_PRE_NON_NULL(clock_class, "Clock class");
	BT_ASSERT_PRE_CLOCK_CLASS_HOT(clock_class);
	BT_ASSERT_PRE(cycles < clock_class->frequency,
		"Offset (cycles) is greater than clock class's frequency: "
		"%![cc-]+K, new-offset-cycles=%" PRIu64, clock_class, cycles);
	clock_class->offset_seconds = seconds;
	clock_class->offset_cycles = cycles;
	set_base_offset(clock_class);
	BT_LIB_LOGV("Set clock class's offset: %!+K", clock_class);
	return 0;
}

bt_bool bt_clock_class_is_absolute(struct bt_clock_class *clock_class)
{
	BT_ASSERT_PRE_NON_NULL(clock_class, "Clock class");
	return (bool) clock_class->is_absolute;
}

int bt_clock_class_set_is_absolute(struct bt_clock_class *clock_class,
		bt_bool is_absolute)
{
	BT_ASSERT_PRE_NON_NULL(clock_class, "Clock class");
	BT_ASSERT_PRE_CLOCK_CLASS_HOT(clock_class);
	clock_class->is_absolute = (bool) is_absolute;
	BT_LIB_LOGV("Set clock class's absolute property: %!+K",
		clock_class);
	return 0;
}

bt_uuid bt_clock_class_get_uuid(struct bt_clock_class *clock_class)
{
	BT_ASSERT_PRE_NON_NULL(clock_class, "Clock class");
	return clock_class->uuid.value;
}

int bt_clock_class_set_uuid(struct bt_clock_class *clock_class,
		bt_uuid uuid)
{
	BT_ASSERT_PRE_NON_NULL(clock_class, "Clock class");
	BT_ASSERT_PRE_NON_NULL(uuid, "UUID");
	BT_ASSERT_PRE_CLOCK_CLASS_HOT(clock_class);
	memcpy(clock_class->uuid.uuid, uuid, BABELTRACE_UUID_LEN);
	clock_class->uuid.value = clock_class->uuid.uuid;
	BT_LIB_LOGV("Set clock class's UUID: %!+K", clock_class);
	return 0;
}

BT_HIDDEN
void _bt_clock_class_freeze(struct bt_clock_class *clock_class)
{
	BT_ASSERT(clock_class);

	if (clock_class->frozen) {
		return;
	}

	BT_LIB_LOGD("Freezing clock class: %!+K", clock_class);
	clock_class->frozen = 1;
}

int bt_clock_class_cycles_to_ns_from_origin(struct bt_clock_class *clock_class,
		uint64_t cycles, int64_t *ns)
{
	int ret;

	BT_ASSERT_PRE_NON_NULL(clock_class, "Clock class");
	BT_ASSERT_PRE_NON_NULL(ns, "Nanoseconds (output)");
	ret = bt_util_ns_from_origin(clock_class, cycles, ns);
	if (ret) {
		BT_LIB_LOGW("Cannot convert cycles to nanoseconds "
			"from origin for given clock class: "
			"value overflows the signed 64-bit integer range: "
			"%![cc-]+K, cycles=%" PRIu64,
			clock_class, cycles);
	}

	return ret;
}
Commit	Line	Data
273b65be	1	/*
ac0c6bdd	2	* clock-class.c
273b65be	3	*
ac0c6bdd	4	* Babeltrace CTF IR - Clock class
273b65be	5	*
de9dd397	6	* Copyright 2013, 2014 Jérémie Galarneau <jeremie.galarneau@efficios.com>
273b65be JG	7	*
	8	* Author: Jérémie Galarneau <jeremie.galarneau@efficios.com>
	9	*
	10	* Permission is hereby granted, free of charge, to any person obtaining a copy
	11	* of this software and associated documentation files (the "Software"), to deal
	12	* in the Software without restriction, including without limitation the rights
	13	* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
	14	* copies of the Software, and to permit persons to whom the Software is
	15	* furnished to do so, subject to the following conditions:
	16	*
	17	* The above copyright notice and this permission notice shall be included in
	18	* all copies or substantial portions of the Software.
	19	*
	20	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
	21	* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
	22	* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
	23	* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
	24	* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
	25	* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
	26	* SOFTWARE.
	27	*/
	28
0f5e83e5	29	#define BT_LOG_TAG "CLOCK-CLASS"
40547d22	30	#include <babeltrace/lib-logging-internal.h>
0f5e83e5	31
312c056a	32	#include <babeltrace/assert-pre-internal.h>
75c3fca1	33	#include <babeltrace/compat/uuid-internal.h>
ac0c6bdd	34	#include <babeltrace/ctf-ir/clock-class-internal.h>
c057dea0	35	#include <babeltrace/ctf-ir/clock-value-internal.h>
44c440bc	36	#include <babeltrace/ctf-ir/utils-internal.h>
83509119	37	#include <babeltrace/ref.h>
3d9990ac	38	#include <babeltrace/compiler-internal.h>
c55a9f58	39	#include <babeltrace/types.h>
ee389f01	40	#include <babeltrace/compat/string-internal.h>
273b65be	41	#include <inttypes.h>
0f5e83e5	42	#include <babeltrace/object-internal.h>
f6ccaed9	43	#include <babeltrace/assert-internal.h>
5134570b	44
44c440bc PP	45	#define BT_ASSERT_PRE_CLOCK_CLASS_HOT(_cc) \
44c440bc PP	46	BT_ASSERT_PRE_HOT((_cc), "Clock class", ": %!+K", (_cc))
312c056a PP	47
312c056a PP	48	static
44c440bc	49	void destroy_clock_class(struct bt_object *obj)
c06116f3	50	{
44c440bc	51	struct bt_clock_class clock_class = (void ) obj;
c06116f3	52
44c440bc	53	BT_LIB_LOGD("Destroying clock class: %!+K", clock_class);
273b65be	54
44c440bc PP	55	if (clock_class->name.str) {
44c440bc PP	56	g_string_free(clock_class->name.str, TRUE);
5134570b PP	57	}
5134570b PP	58
44c440bc PP	59	if (clock_class->description.str) {
44c440bc PP	60	g_string_free(clock_class->description.str, TRUE);
273b65be JG	61	}
273b65be JG	62
44c440bc PP	63	bt_object_pool_finalize(&clock_class->cv_pool);
44c440bc PP	64	g_free(clock_class);
4c426c17 JG	65	}
4c426c17 JG	66
f3534905	67	static
44c440bc PP	68	void free_clock_value(struct bt_clock_value *clock_value,
44c440bc PP	69	struct bt_clock_class *clock_class)
f3534905	70	{
44c440bc	71	bt_clock_value_destroy(clock_value);
f3534905 PP	72	}
f3534905 PP	73
44c440bc PP	74	static inline
44c440bc PP	75	void set_base_offset(struct bt_clock_class *clock_class)
312c056a	76	{
44c440bc PP	77	uint64_t offset_cycles_ns;
	78
	79	/* Initialize nanosecond timestamp to clock's offset in seconds */
	80	if (clock_class->offset_seconds <= (INT64_MIN / INT64_C(1000000000) - 1) \|\|
	81	clock_class->offset_seconds >= (INT64_MAX / INT64_C(1000000000)) - 1) {
	82	/*
	83	* Overflow: offset in seconds converted to nanoseconds
	84	* is outside the int64_t range. We also subtract 1 here
	85	* to leave "space" for the offset in cycles converted
	86	* to nanoseconds (which is always less than 1 second by
	87	* contract).
	88	*/
	89	clock_class->base_offset.overflows = true;
	90	goto end;
	91	}
	92
	93	/* Offset (seconds) to nanoseconds */
	94	clock_class->base_offset.value_ns = clock_class->offset_seconds *
	95	INT64_C(1000000000);
	96
	97	/* Add offset in cycles */
	98	BT_ASSERT(clock_class->offset_cycles < clock_class->frequency);
	99	offset_cycles_ns = bt_util_ns_from_value(clock_class->frequency,
	100	clock_class->offset_cycles);
	101	BT_ASSERT(offset_cycles_ns < 1000000000);
	102	clock_class->base_offset.value_ns += (int64_t) offset_cycles_ns;
	103	clock_class->base_offset.overflows = false;
	104
	105	end:
	106	return;
312c056a PP	107	}
312c056a PP	108
44c440bc	109	struct bt_clock_class *bt_clock_class_create(void)
4c426c17 JG	110	{
4c426c17 JG	111	int ret;
50842bdc	112	struct bt_clock_class *clock_class = NULL;
4c426c17	113
44c440bc	114	BT_LOGD_STR("Creating default clock class object");
f3534905	115
50842bdc	116	clock_class = g_new0(struct bt_clock_class, 1);
ac0c6bdd	117	if (!clock_class) {
5134570b	118	BT_LOGE_STR("Failed to allocate one clock class.");
4c426c17 JG	119	goto error;
	120	}
	121
44c440bc PP	122	bt_object_init_shared(&clock_class->base, destroy_clock_class);
	123	clock_class->name.str = g_string_new(NULL);
	124	if (!clock_class->name.str) {
	125	BT_LOGE_STR("Failed to allocate a GString.");
	126	goto error;
	127	}
85380e99	128
44c440bc PP	129	clock_class->description.str = g_string_new(NULL);
	130	if (!clock_class->description.str) {
	131	BT_LOGE_STR("Failed to allocate a GString.");
	132	goto error;
273b65be JG	133	}
273b65be JG	134
44c440bc PP	135	clock_class->frequency = UINT64_C(1000000000);
	136	clock_class->is_absolute = BT_TRUE;
	137	set_base_offset(clock_class);
312c056a PP	138	ret = bt_object_pool_initialize(&clock_class->cv_pool,
	139	(bt_object_pool_new_object_func) bt_clock_value_new,
	140	(bt_object_pool_destroy_object_func)
44c440bc	141	free_clock_value,
312c056a PP	142	clock_class);
	143	if (ret) {
	144	BT_LOGE("Failed to initialize clock value pool: ret=%d",
	145	ret);
	146	goto error;
	147	}
	148
44c440bc PP	149	BT_LIB_LOGD("Created clock class object: %!+K", clock_class);
	150	goto end;
	151
273b65be	152	error:
ac0c6bdd	153	BT_PUT(clock_class);
87d76bb1 JG	154
87d76bb1 JG	155	end:
44c440bc	156	return clock_class;
87d76bb1 JG	157	}
87d76bb1 JG	158
44c440bc	159	const char *bt_clock_class_get_name(
50842bdc	160	struct bt_clock_class *clock_class)
87d76bb1	161	{
44c440bc PP	162	BT_ASSERT_PRE_NON_NULL(clock_class, "Clock class");
	163	return clock_class->name.value;
	164	}
87d76bb1	165
44c440bc PP	166	int bt_clock_class_set_name(struct bt_clock_class *clock_class,
	167	const char *name)
	168	{
	169	BT_ASSERT_PRE_NON_NULL(clock_class, "Clock class");
	170	BT_ASSERT_PRE_NON_NULL(name, "Name");
	171	BT_ASSERT_PRE_CLOCK_CLASS_HOT(clock_class);
	172	g_string_assign(clock_class->name.str, name);
	173	clock_class->name.value = clock_class->name.str->str;
	174	BT_LIB_LOGV("Set clock class's name: %!+K", clock_class);
	175	return 0;
	176	}
87d76bb1	177
44c440bc PP	178	const char bt_clock_class_get_description(struct bt_clock_class clock_class)
	179	{
	180	BT_ASSERT_PRE_NON_NULL(clock_class, "Clock class");
	181	return clock_class->description.value;
273b65be JG	182	}
273b65be JG	183
50842bdc	184	int bt_clock_class_set_description(struct bt_clock_class *clock_class,
44c440bc	185	const char *descr)
273b65be	186	{
44c440bc PP	187	BT_ASSERT_PRE_NON_NULL(clock_class, "Clock class");
	188	BT_ASSERT_PRE_NON_NULL(descr, "Description");
	189	BT_ASSERT_PRE_CLOCK_CLASS_HOT(clock_class);
	190	g_string_assign(clock_class->description.str, descr);
	191	clock_class->description.value = clock_class->description.str->str;
	192	BT_LIB_LOGV("Set clock class's description: %!+K",
	193	clock_class);
	194	return 0;
273b65be JG	195	}
273b65be JG	196
44c440bc	197	uint64_t bt_clock_class_get_frequency(struct bt_clock_class *clock_class)
87d76bb1	198	{
44c440bc PP	199	BT_ASSERT_PRE_NON_NULL(clock_class, "Clock class");
44c440bc PP	200	return clock_class->frequency;
87d76bb1 JG	201	}
87d76bb1 JG	202
50842bdc	203	int bt_clock_class_set_frequency(struct bt_clock_class *clock_class,
44c440bc	204	uint64_t frequency)
273b65be	205	{
44c440bc PP	206	BT_ASSERT_PRE_NON_NULL(clock_class, "Clock class");
	207	BT_ASSERT_PRE_CLOCK_CLASS_HOT(clock_class);
	208	BT_ASSERT_PRE(frequency != UINT64_C(-1) && frequency != 0,
	209	"Invalid frequency: %![cc-]+K, new-freq=%" PRIu64,
	210	clock_class, frequency);
	211	BT_ASSERT_PRE(clock_class->offset_cycles < frequency,
	212	"Offset (cycles) is greater than clock class's frequency: "
	213	"%![cc-]+K, new-freq=%" PRIu64, clock_class, frequency);
	214	clock_class->frequency = frequency;
	215	set_base_offset(clock_class);
	216	BT_LIB_LOGV("Set clock class's frequency: %!+K", clock_class);
	217	return 0;
273b65be JG	218	}
273b65be JG	219
50842bdc	220	uint64_t bt_clock_class_get_precision(struct bt_clock_class *clock_class)
87d76bb1	221	{
44c440bc PP	222	BT_ASSERT_PRE_NON_NULL(clock_class, "Clock class");
44c440bc PP	223	return clock_class->precision;
87d76bb1 JG	224	}
87d76bb1 JG	225
50842bdc	226	int bt_clock_class_set_precision(struct bt_clock_class *clock_class,
ac0c6bdd	227	uint64_t precision)
273b65be	228	{
44c440bc PP	229	BT_ASSERT_PRE_NON_NULL(clock_class, "Clock class");
	230	BT_ASSERT_PRE_CLOCK_CLASS_HOT(clock_class);
	231	BT_ASSERT_PRE(precision != UINT64_C(-1),
	232	"Invalid precision: %![cc-]+K, new-precision=%" PRIu64,
	233	clock_class, precision);
ac0c6bdd	234	clock_class->precision = precision;
44c440bc PP	235	BT_LIB_LOGV("Set clock class's precision: %!+K", clock_class);
44c440bc PP	236	return 0;
273b65be JG	237	}
273b65be JG	238
44c440bc PP	239	void bt_clock_class_get_offset(struct bt_clock_class *clock_class,
44c440bc PP	240	int64_t seconds, uint64_t cycles)
87d76bb1	241	{
44c440bc PP	242	BT_ASSERT_PRE_NON_NULL(clock_class, "Clock class");
	243	BT_ASSERT_PRE_NON_NULL(seconds, "Seconds (output)");
	244	BT_ASSERT_PRE_NON_NULL(cycles, "Cycles (output)");
	245	*seconds = clock_class->offset_seconds;
	246	*cycles = clock_class->offset_cycles;
87d76bb1 JG	247	}
87d76bb1 JG	248
44c440bc PP	249	int bt_clock_class_set_offset(struct bt_clock_class *clock_class,
44c440bc PP	250	int64_t seconds, uint64_t cycles)
273b65be	251	{
44c440bc PP	252	BT_ASSERT_PRE_NON_NULL(clock_class, "Clock class");
	253	BT_ASSERT_PRE_CLOCK_CLASS_HOT(clock_class);
	254	BT_ASSERT_PRE(cycles < clock_class->frequency,
	255	"Offset (cycles) is greater than clock class's frequency: "
	256	"%![cc-]+K, new-offset-cycles=%" PRIu64, clock_class, cycles);
	257	clock_class->offset_seconds = seconds;
	258	clock_class->offset_cycles = cycles;
	259	set_base_offset(clock_class);
	260	BT_LIB_LOGV("Set clock class's offset: %!+K", clock_class);
	261	return 0;
273b65be JG	262	}
273b65be JG	263
50842bdc	264	bt_bool bt_clock_class_is_absolute(struct bt_clock_class *clock_class)
87d76bb1	265	{
44c440bc PP	266	BT_ASSERT_PRE_NON_NULL(clock_class, "Clock class");
44c440bc PP	267	return (bool) clock_class->is_absolute;
87d76bb1 JG	268	}
87d76bb1 JG	269
50842bdc	270	int bt_clock_class_set_is_absolute(struct bt_clock_class *clock_class,
a2b94977	271	bt_bool is_absolute)
273b65be	272	{
44c440bc PP	273	BT_ASSERT_PRE_NON_NULL(clock_class, "Clock class");
	274	BT_ASSERT_PRE_CLOCK_CLASS_HOT(clock_class);
	275	clock_class->is_absolute = (bool) is_absolute;
	276	BT_LIB_LOGV("Set clock class's absolute property: %!+K",
	277	clock_class);
	278	return 0;
273b65be JG	279	}
273b65be JG	280
44c440bc	281	bt_uuid bt_clock_class_get_uuid(struct bt_clock_class *clock_class)
85b743f4	282	{
44c440bc PP	283	BT_ASSERT_PRE_NON_NULL(clock_class, "Clock class");
44c440bc PP	284	return clock_class->uuid.value;
85b743f4 JG	285	}
85b743f4 JG	286
50842bdc	287	int bt_clock_class_set_uuid(struct bt_clock_class *clock_class,
44c440bc	288	bt_uuid uuid)
85b743f4	289	{
44c440bc PP	290	BT_ASSERT_PRE_NON_NULL(clock_class, "Clock class");
	291	BT_ASSERT_PRE_NON_NULL(uuid, "UUID");
	292	BT_ASSERT_PRE_CLOCK_CLASS_HOT(clock_class);
	293	memcpy(clock_class->uuid.uuid, uuid, BABELTRACE_UUID_LEN);
	294	clock_class->uuid.value = clock_class->uuid.uuid;
	295	BT_LIB_LOGV("Set clock class's UUID: %!+K", clock_class);
	296	return 0;
312c056a PP	297	}
	298
	299	BT_HIDDEN
44c440bc	300	void _bt_clock_class_freeze(struct bt_clock_class *clock_class)
312c056a	301	{
312c056a	302	BT_ASSERT(clock_class);
6f57e458	303
44c440bc PP	304	if (clock_class->frozen) {
44c440bc PP	305	return;
93dda901 PP	306	}
93dda901 PP	307
44c440bc PP	308	BT_LIB_LOGD("Freezing clock class: %!+K", clock_class);
44c440bc PP	309	clock_class->frozen = 1;
93dda901	310	}
312c056a	311
44c440bc	312	int bt_clock_class_cycles_to_ns_from_origin(struct bt_clock_class *clock_class,
312c056a PP	313	uint64_t cycles, int64_t *ns)
	314	{
	315	int ret;
312c056a PP	316
312c056a PP	317	BT_ASSERT_PRE_NON_NULL(clock_class, "Clock class");
44c440bc PP	318	BT_ASSERT_PRE_NON_NULL(ns, "Nanoseconds (output)");
44c440bc PP	319	ret = bt_util_ns_from_origin(clock_class, cycles, ns);
312c056a	320	if (ret) {
44c440bc PP	321	BT_LIB_LOGW("Cannot convert cycles to nanoseconds "
	322	"from origin for given clock class: "
	323	"value overflows the signed 64-bit integer range: "
	324	"%![cc-]+K, cycles=%" PRIu64,
	325	clock_class, cycles);
312c056a PP	326	}
312c056a PP	327
312c056a PP	328	return ret;
312c056a PP	329	}