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

/*
 * 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/trace-ir/clock-class-internal.h>
#include <babeltrace/trace-ir/clock-value-internal.h>
#include <babeltrace/trace-ir/utils-internal.h>
#include <babeltrace/object.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);
		clock_class->name.str = NULL;
		clock_class->name.value = NULL;
	}

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

	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_OBJECT_PUT_REF_AND_RESET(clock_class);

end:
	return clock_class;
}

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

void 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);
}

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

void 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);
}

void bt_clock_class_get_offset(const 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;
}

void 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);
}

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

void 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);
}

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

void 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);
}

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

	if (clock_class->frozen) {
		return;
	}

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

int bt_clock_class_cycles_to_ns_from_origin(
		const 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	/*
de9dd397	2	* Copyright 2013, 2014 Jérémie Galarneau <jeremie.galarneau@efficios.com>
273b65be JG	3	*
	4	* Author: Jérémie Galarneau <jeremie.galarneau@efficios.com>
	5	*
	6	* Permission is hereby granted, free of charge, to any person obtaining a copy
	7	* of this software and associated documentation files (the "Software"), to deal
	8	* in the Software without restriction, including without limitation the rights
	9	* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
	10	* copies of the Software, and to permit persons to whom the Software is
	11	* furnished to do so, subject to the following conditions:
	12	*
	13	* The above copyright notice and this permission notice shall be included in
	14	* all copies or substantial portions of the Software.
	15	*
	16	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
	17	* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
	18	* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
	19	* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
	20	* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
	21	* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
	22	* SOFTWARE.
	23	*/
	24
0f5e83e5	25	#define BT_LOG_TAG "CLOCK-CLASS"
40547d22	26	#include <babeltrace/lib-logging-internal.h>
0f5e83e5	27
312c056a	28	#include <babeltrace/assert-pre-internal.h>
75c3fca1	29	#include <babeltrace/compat/uuid-internal.h>
56e18c4c PP	30	#include <babeltrace/trace-ir/clock-class-internal.h>
	31	#include <babeltrace/trace-ir/clock-value-internal.h>
	32	#include <babeltrace/trace-ir/utils-internal.h>
65300d60	33	#include <babeltrace/object.h>
3d9990ac	34	#include <babeltrace/compiler-internal.h>
c55a9f58	35	#include <babeltrace/types.h>
ee389f01	36	#include <babeltrace/compat/string-internal.h>
273b65be	37	#include <inttypes.h>
0f5e83e5	38	#include <babeltrace/object-internal.h>
f6ccaed9	39	#include <babeltrace/assert-internal.h>
5134570b	40
44c440bc PP	41	#define BT_ASSERT_PRE_CLOCK_CLASS_HOT(_cc) \
44c440bc PP	42	BT_ASSERT_PRE_HOT((_cc), "Clock class", ": %!+K", (_cc))
312c056a PP	43
312c056a PP	44	static
44c440bc	45	void destroy_clock_class(struct bt_object *obj)
c06116f3	46	{
44c440bc	47	struct bt_clock_class clock_class = (void ) obj;
c06116f3	48
44c440bc	49	BT_LIB_LOGD("Destroying clock class: %!+K", clock_class);
273b65be	50
44c440bc PP	51	if (clock_class->name.str) {
44c440bc PP	52	g_string_free(clock_class->name.str, TRUE);
238b7404 PP	53	clock_class->name.str = NULL;
238b7404 PP	54	clock_class->name.value = NULL;
5134570b PP	55	}
5134570b PP	56
44c440bc PP	57	if (clock_class->description.str) {
44c440bc PP	58	g_string_free(clock_class->description.str, TRUE);
238b7404 PP	59	clock_class->description.str = NULL;
238b7404 PP	60	clock_class->description.value = NULL;
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
40f4ba76	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:
65300d60	153	BT_OBJECT_PUT_REF_AND_RESET(clock_class);
87d76bb1 JG	154
87d76bb1 JG	155	end:
40f4ba76	156	return clock_class;
87d76bb1 JG	157	}
87d76bb1 JG	158
40f4ba76	159	const char bt_clock_class_get_name(const struct bt_clock_class clock_class)
87d76bb1	160	{
44c440bc PP	161	BT_ASSERT_PRE_NON_NULL(clock_class, "Clock class");
	162	return clock_class->name.value;
	163	}
87d76bb1	164
40f4ba76	165	int bt_clock_class_set_name(struct bt_clock_class *clock_class,
44c440bc PP	166	const char *name)
	167	{
	168	BT_ASSERT_PRE_NON_NULL(clock_class, "Clock class");
	169	BT_ASSERT_PRE_NON_NULL(name, "Name");
	170	BT_ASSERT_PRE_CLOCK_CLASS_HOT(clock_class);
	171	g_string_assign(clock_class->name.str, name);
	172	clock_class->name.value = clock_class->name.str->str;
	173	BT_LIB_LOGV("Set clock class's name: %!+K", clock_class);
	174	return 0;
	175	}
87d76bb1	176
40f4ba76 PP	177	const char *bt_clock_class_get_description(
40f4ba76 PP	178	const struct bt_clock_class *clock_class)
44c440bc PP	179	{
	180	BT_ASSERT_PRE_NON_NULL(clock_class, "Clock class");
	181	return clock_class->description.value;
273b65be JG	182	}
273b65be JG	183
40f4ba76	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
40f4ba76	197	uint64_t bt_clock_class_get_frequency(const 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
40f4ba76	203	void 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);
273b65be JG	217	}
273b65be JG	218
40f4ba76	219	uint64_t bt_clock_class_get_precision(const struct bt_clock_class *clock_class)
87d76bb1	220	{
44c440bc PP	221	BT_ASSERT_PRE_NON_NULL(clock_class, "Clock class");
44c440bc PP	222	return clock_class->precision;
87d76bb1 JG	223	}
87d76bb1 JG	224
40f4ba76	225	void bt_clock_class_set_precision(struct bt_clock_class *clock_class,
ac0c6bdd	226	uint64_t precision)
273b65be	227	{
44c440bc PP	228	BT_ASSERT_PRE_NON_NULL(clock_class, "Clock class");
	229	BT_ASSERT_PRE_CLOCK_CLASS_HOT(clock_class);
	230	BT_ASSERT_PRE(precision != UINT64_C(-1),
	231	"Invalid precision: %![cc-]+K, new-precision=%" PRIu64,
	232	clock_class, precision);
ac0c6bdd	233	clock_class->precision = precision;
44c440bc	234	BT_LIB_LOGV("Set clock class's precision: %!+K", clock_class);
273b65be JG	235	}
273b65be JG	236
40f4ba76	237	void bt_clock_class_get_offset(const struct bt_clock_class *clock_class,
44c440bc	238	int64_t seconds, uint64_t cycles)
87d76bb1	239	{
44c440bc PP	240	BT_ASSERT_PRE_NON_NULL(clock_class, "Clock class");
	241	BT_ASSERT_PRE_NON_NULL(seconds, "Seconds (output)");
	242	BT_ASSERT_PRE_NON_NULL(cycles, "Cycles (output)");
	243	*seconds = clock_class->offset_seconds;
	244	*cycles = clock_class->offset_cycles;
87d76bb1 JG	245	}
87d76bb1 JG	246
40f4ba76	247	void bt_clock_class_set_offset(struct bt_clock_class *clock_class,
44c440bc	248	int64_t seconds, uint64_t cycles)
273b65be	249	{
44c440bc PP	250	BT_ASSERT_PRE_NON_NULL(clock_class, "Clock class");
	251	BT_ASSERT_PRE_CLOCK_CLASS_HOT(clock_class);
	252	BT_ASSERT_PRE(cycles < clock_class->frequency,
	253	"Offset (cycles) is greater than clock class's frequency: "
	254	"%![cc-]+K, new-offset-cycles=%" PRIu64, clock_class, cycles);
	255	clock_class->offset_seconds = seconds;
	256	clock_class->offset_cycles = cycles;
	257	set_base_offset(clock_class);
	258	BT_LIB_LOGV("Set clock class's offset: %!+K", clock_class);
273b65be JG	259	}
273b65be JG	260
40f4ba76	261	bt_bool bt_clock_class_is_absolute(const struct bt_clock_class *clock_class)
87d76bb1	262	{
44c440bc PP	263	BT_ASSERT_PRE_NON_NULL(clock_class, "Clock class");
44c440bc PP	264	return (bool) clock_class->is_absolute;
87d76bb1 JG	265	}
87d76bb1 JG	266
40f4ba76	267	void bt_clock_class_set_is_absolute(struct bt_clock_class *clock_class,
a2b94977	268	bt_bool is_absolute)
273b65be	269	{
44c440bc PP	270	BT_ASSERT_PRE_NON_NULL(clock_class, "Clock class");
	271	BT_ASSERT_PRE_CLOCK_CLASS_HOT(clock_class);
	272	clock_class->is_absolute = (bool) is_absolute;
	273	BT_LIB_LOGV("Set clock class's absolute property: %!+K",
	274	clock_class);
273b65be JG	275	}
273b65be JG	276
40f4ba76	277	bt_uuid bt_clock_class_get_uuid(const struct bt_clock_class *clock_class)
85b743f4	278	{
44c440bc PP	279	BT_ASSERT_PRE_NON_NULL(clock_class, "Clock class");
44c440bc PP	280	return clock_class->uuid.value;
85b743f4 JG	281	}
85b743f4 JG	282
40f4ba76	283	void bt_clock_class_set_uuid(struct bt_clock_class *clock_class,
44c440bc	284	bt_uuid uuid)
85b743f4	285	{
44c440bc PP	286	BT_ASSERT_PRE_NON_NULL(clock_class, "Clock class");
	287	BT_ASSERT_PRE_NON_NULL(uuid, "UUID");
	288	BT_ASSERT_PRE_CLOCK_CLASS_HOT(clock_class);
	289	memcpy(clock_class->uuid.uuid, uuid, BABELTRACE_UUID_LEN);
	290	clock_class->uuid.value = clock_class->uuid.uuid;
	291	BT_LIB_LOGV("Set clock class's UUID: %!+K", clock_class);
312c056a PP	292	}
	293
	294	BT_HIDDEN
40f4ba76	295	void _bt_clock_class_freeze(const struct bt_clock_class *clock_class)
312c056a	296	{
312c056a	297	BT_ASSERT(clock_class);
6f57e458	298
44c440bc PP	299	if (clock_class->frozen) {
44c440bc PP	300	return;
93dda901 PP	301	}
93dda901 PP	302
44c440bc	303	BT_LIB_LOGD("Freezing clock class: %!+K", clock_class);
40f4ba76	304	((struct bt_clock_class *) clock_class)->frozen = 1;
93dda901	305	}
312c056a	306
40f4ba76 PP	307	int bt_clock_class_cycles_to_ns_from_origin(
40f4ba76 PP	308	const struct bt_clock_class *clock_class,
312c056a PP	309	uint64_t cycles, int64_t *ns)
	310	{
	311	int ret;
312c056a PP	312
312c056a PP	313	BT_ASSERT_PRE_NON_NULL(clock_class, "Clock class");
44c440bc PP	314	BT_ASSERT_PRE_NON_NULL(ns, "Nanoseconds (output)");
44c440bc PP	315	ret = bt_util_ns_from_origin(clock_class, cycles, ns);
312c056a	316	if (ret) {
44c440bc PP	317	BT_LIB_LOGW("Cannot convert cycles to nanoseconds "
	318	"from origin for given clock class: "
	319	"value overflows the signed 64-bit integer range: "
	320	"%![cc-]+K, cycles=%" PRIu64,
	321	clock_class, cycles);
312c056a PP	322	}
312c056a PP	323
312c056a PP	324	return ret;
312c056a PP	325	}