1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
|
// SPDX-License-Identifier: GPL-2.0-only
/*
* tools/testing/selftests/kvm/lib/test_util.c
*
* Copyright (C) 2020, Google LLC.
*/
#include <assert.h>
#include <ctype.h>
#include <limits.h>
#include <stdlib.h>
#include <time.h>
#include "test_util.h"
/*
* Parses "[0-9]+[kmgt]?".
*/
size_t parse_size(const char *size)
{
size_t base;
char *scale;
int shift = 0;
TEST_ASSERT(size && isdigit(size[0]), "Need at least one digit in '%s'", size);
base = strtoull(size, &scale, 0);
TEST_ASSERT(base != ULLONG_MAX, "Overflow parsing size!");
switch (tolower(*scale)) {
case 't':
shift = 40;
break;
case 'g':
shift = 30;
break;
case 'm':
shift = 20;
break;
case 'k':
shift = 10;
break;
case 'b':
case '\0':
shift = 0;
break;
default:
TEST_ASSERT(false, "Unknown size letter %c", *scale);
}
TEST_ASSERT((base << shift) >> shift == base, "Overflow scaling size!");
return base << shift;
}
int64_t timespec_to_ns(struct timespec ts)
{
return (int64_t)ts.tv_nsec + 1000000000LL * (int64_t)ts.tv_sec;
}
struct timespec timespec_add_ns(struct timespec ts, int64_t ns)
{
struct timespec res;
res.tv_nsec = ts.tv_nsec + ns;
res.tv_sec = ts.tv_sec + res.tv_nsec / 1000000000LL;
res.tv_nsec %= 1000000000LL;
return res;
}
struct timespec timespec_add(struct timespec ts1, struct timespec ts2)
{
int64_t ns1 = timespec_to_ns(ts1);
int64_t ns2 = timespec_to_ns(ts2);
return timespec_add_ns((struct timespec){0}, ns1 + ns2);
}
struct timespec timespec_sub(struct timespec ts1, struct timespec ts2)
{
int64_t ns1 = timespec_to_ns(ts1);
int64_t ns2 = timespec_to_ns(ts2);
return timespec_add_ns((struct timespec){0}, ns1 - ns2);
}
struct timespec timespec_diff_now(struct timespec start)
{
struct timespec end;
clock_gettime(CLOCK_MONOTONIC, &end);
return timespec_sub(end, start);
}
struct timespec timespec_div(struct timespec ts, int divisor)
{
int64_t ns = timespec_to_ns(ts) / divisor;
return timespec_add_ns((struct timespec){0}, ns);
}
void print_skip(const char *fmt, ...)
{
va_list ap;
assert(fmt);
va_start(ap, fmt);
vprintf(fmt, ap);
va_end(ap);
puts(", skipping test");
}
|
