[mirror_ubuntu-focal-kernel.git] / tools / perf / util / units.c

// SPDX-License-Identifier: GPL-2.0
#include "units.h"
#include <inttypes.h>
#include <limits.h>
#include <stdlib.h>
#include <string.h>
#include <linux/kernel.h>
#include <linux/time64.h>

unsigned long parse_tag_value(const char *str, struct parse_tag *tags)
{
	struct parse_tag *i = tags;

	while (i->tag) {
		char *s = strchr(str, i->tag);

		if (s) {
			unsigned long int value;
			char *endptr;

			value = strtoul(str, &endptr, 10);
			if (s != endptr)
				break;

			if (value > ULONG_MAX / i->mult)
				break;
			value *= i->mult;
			return value;
		}
		i++;
	}

	return (unsigned long) -1;
}

unsigned long convert_unit(unsigned long value, char *unit)
{
	*unit = ' ';

	if (value > 1000) {
		value /= 1000;
		*unit = 'K';
	}

	if (value > 1000) {
		value /= 1000;
		*unit = 'M';
	}

	if (value > 1000) {
		value /= 1000;
		*unit = 'G';
	}

	return value;
}

int unit_number__scnprintf(char *buf, size_t size, u64 n)
{
	char unit[4] = "BKMG";
	int i = 0;

	while (((n / 1024) > 1) && (i < 3)) {
		n /= 1024;
		i++;
	}

	return scnprintf(buf, size, "%" PRIu64 "%c", n, unit[i]);
}
Commit	Line	Data
b2441318	1	// SPDX-License-Identifier: GPL-2.0
58db1d6e ACM	2	#include "units.h"
58db1d6e ACM	3	#include <inttypes.h>
3caeafce ACM	4	#include <limits.h>
	5	#include <stdlib.h>
	6	#include <string.h>
58db1d6e ACM	7	#include <linux/kernel.h>
	8	#include <linux/time64.h>
	9
3caeafce ACM	10	unsigned long parse_tag_value(const char str, struct parse_tag tags)
	11	{
	12	struct parse_tag *i = tags;
	13
	14	while (i->tag) {
	15	char *s = strchr(str, i->tag);
	16
	17	if (s) {
	18	unsigned long int value;
	19	char *endptr;
	20
	21	value = strtoul(str, &endptr, 10);
	22	if (s != endptr)
	23	break;
	24
	25	if (value > ULONG_MAX / i->mult)
	26	break;
	27	value *= i->mult;
	28	return value;
	29	}
	30	i++;
	31	}
	32
	33	return (unsigned long) -1;
	34	}
	35
58db1d6e ACM	36	unsigned long convert_unit(unsigned long value, char *unit)
	37	{
	38	*unit = ' ';
	39
	40	if (value > 1000) {
	41	value /= 1000;
	42	*unit = 'K';
	43	}
	44
	45	if (value > 1000) {
	46	value /= 1000;
	47	*unit = 'M';
	48	}
	49
	50	if (value > 1000) {
	51	value /= 1000;
	52	*unit = 'G';
	53	}
	54
	55	return value;
	56	}
	57
	58	int unit_number__scnprintf(char *buf, size_t size, u64 n)
	59	{
	60	char unit[4] = "BKMG";
	61	int i = 0;
	62
	63	while (((n / 1024) > 1) && (i < 3)) {
	64	n /= 1024;
	65	i++;
	66	}
	67
	68	return scnprintf(buf, size, "%" PRIu64 "%c", n, unit[i]);
	69	}