Absolute File Name: | /home/opencoverage/opencoverage/guest-scripts/coreutils/src/gnulib/lib/gethrxtime.c |
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1 | /* gethrxtime -- get high resolution real time | - | ||||||
2 | - | |||||||
3 | Copyright (C) 2005-2007, 2009-2018 Free Software Foundation, Inc. | - | ||||||
4 | - | |||||||
5 | This program is free software: you can redistribute it and/or modify | - | ||||||
6 | it under the terms of the GNU General Public License as published by | - | ||||||
7 | the Free Software Foundation; either version 3 of the License, or | - | ||||||
8 | (at your option) any later version. | - | ||||||
9 | - | |||||||
10 | This program is distributed in the hope that it will be useful, | - | ||||||
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | - | ||||||
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | - | ||||||
13 | GNU General Public License for more details. | - | ||||||
14 | - | |||||||
15 | You should have received a copy of the GNU General Public License | - | ||||||
16 | along with this program. If not, see <https://www.gnu.org/licenses/>. */ | - | ||||||
17 | - | |||||||
18 | /* Written by Paul Eggert. */ | - | ||||||
19 | - | |||||||
20 | #include <config.h> | - | ||||||
21 | - | |||||||
22 | #define GETHRXTIME_INLINE _GL_EXTERN_INLINE | - | ||||||
23 | #include "gethrxtime.h" | - | ||||||
24 | - | |||||||
25 | #if ! (HAVE_ARITHMETIC_HRTIME_T && HAVE_DECL_GETHRTIME) | - | ||||||
26 | - | |||||||
27 | #include <sys/time.h> | - | ||||||
28 | #include "timespec.h" | - | ||||||
29 | - | |||||||
30 | /* Get the current time, as a count of the number of nanoseconds since | - | ||||||
31 | an arbitrary epoch (e.g., the system boot time). Prefer a | - | ||||||
32 | high-resolution clock that is not subject to resetting or | - | ||||||
33 | drifting. */ | - | ||||||
34 | - | |||||||
35 | xtime_t | - | ||||||
36 | gethrxtime (void) | - | ||||||
37 | { | - | ||||||
38 | # if HAVE_NANOUPTIME | - | ||||||
39 | { | - | ||||||
40 | struct timespec ts; | - | ||||||
41 | nanouptime (&ts); | - | ||||||
42 | return xtime_make (ts.tv_sec, ts.tv_nsec); | - | ||||||
43 | } | - | ||||||
44 | # else | - | ||||||
45 | - | |||||||
46 | # if defined CLOCK_MONOTONIC && HAVE_CLOCK_GETTIME | - | ||||||
47 | { | - | ||||||
48 | struct timespec ts; | - | ||||||
49 | if (clock_gettime (CLOCK_MONOTONIC, &ts) == 0)
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50 | return xtime_make (ts.tv_sec, ts.tv_nsec); executed 778 times by 1 test: return xtime_make (ts.tv_sec, ts.tv_nsec); Executed by:
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51 | } | - | ||||||
52 | # endif | - | ||||||
53 | - | |||||||
54 | # if HAVE_MICROUPTIME | - | ||||||
55 | { | - | ||||||
56 | struct timeval tv; | - | ||||||
57 | microuptime (&tv); | - | ||||||
58 | return xtime_make (tv.tv_sec, 1000 * tv.tv_usec); | - | ||||||
59 | } | - | ||||||
60 | - | |||||||
61 | # else | - | ||||||
62 | /* No monotonically increasing clocks are available; fall back on a | - | ||||||
63 | clock that might jump backwards, since it's the best we can do. */ | - | ||||||
64 | { | - | ||||||
65 | struct timespec ts; | - | ||||||
66 | gettime (&ts); | - | ||||||
67 | return xtime_make (ts.tv_sec, ts.tv_nsec); never executed: return xtime_make (ts.tv_sec, ts.tv_nsec); | 0 | ||||||
68 | } | - | ||||||
69 | # endif | - | ||||||
70 | # endif | - | ||||||
71 | } | - | ||||||
72 | - | |||||||
73 | #endif | - | ||||||
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