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1 /*
2  * Copyright (C) 2015 Cyril Hrubis <chrubis@suse.cz>
3  *
4  * This program is free software; you can redistribute it and/or modify it
5  * under the terms of version 2 of the GNU General Public License as
6  * published by the Free Software Foundation.
7  *
8  * This program is distributed in the hope that it would be useful, but
9  * WITHOUT ANY WARRANTY; without even the implied warranty of
10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
11  *
12  * Further, this software is distributed without any warranty that it is
13  * free of the rightful claim of any third person regarding infringement
14  * or the like.  Any license provided herein, whether implied or
15  * otherwise, applies only to this software file.  Patent licenses, if
16  * any, provided herein do not apply to combinations of this program with
17  * other software, or any other product whatsoever.
18  *
19  * You should have received a copy of the GNU General Public License along
20  * with this program; if not, write the Free Software Foundation, Inc.,
21  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
22  */
23 
24 #include <errno.h>
25 
26 #include "test.h"
27 #include "tst_timer.h"
28 #include "tst_clocks.h"
29 #include "lapi/posix_clocks.h"
30 
31 static struct timespec start_time, stop_time;
32 static clockid_t clock_id;
33 
clock_name(clockid_t clk_id)34 static const char *clock_name(clockid_t clk_id)
35 {
36 	switch (clk_id) {
37 	case CLOCK_REALTIME:
38 		return "CLOCK_REALTIME";
39 	case CLOCK_REALTIME_COARSE:
40 		return "CLOCK_REALTIME_COARSE";
41 	case CLOCK_MONOTONIC:
42 		return "CLOCK_MONOTONIC";
43 	case CLOCK_MONOTONIC_COARSE:
44 		return "CLOCK_MONOTONIC_COARSE";
45 	case CLOCK_MONOTONIC_RAW:
46 		return "CLOCK_MONOTONIC_RAW";
47 	case CLOCK_BOOTTIME:
48 		return "CLOCK_BOOTTIME";
49 	case CLOCK_PROCESS_CPUTIME_ID:
50 		return "CLOCK_PROCESS_CPUTIME_ID";
51 	case CLOCK_THREAD_CPUTIME_ID:
52 		return "CLOCK_THREAD_CPUTIME_ID";
53 	default:
54 		return "UNKNOWN/INVALID";
55 	}
56 }
57 
tst_timer_check(clockid_t clk_id)58 void tst_timer_check(clockid_t clk_id)
59 {
60 	if (tst_clock_gettime(clk_id, &start_time)) {
61 		if (errno == EINVAL) {
62 			tst_brkm(TCONF, NULL,
63 			         "Clock id %s(%u) not supported by kernel",
64 				 clock_name(clk_id), clk_id);
65 			return;
66 		}
67 
68 		tst_brkm(TBROK | TERRNO, NULL, "tst_clock_gettime() failed");
69 	}
70 }
71 
tst_timer_start(clockid_t clk_id)72 void tst_timer_start(clockid_t clk_id)
73 {
74 	clock_id = clk_id;
75 
76 	if (tst_clock_gettime(clock_id, &start_time))
77 		tst_resm(TWARN | TERRNO, "tst_clock_gettime() failed");
78 }
79 
tst_timer_stop(void)80 void tst_timer_stop(void)
81 {
82 	if (tst_clock_gettime(clock_id, &stop_time))
83 		tst_resm(TWARN | TERRNO, "tst_clock_gettime() failed");
84 }
85 
tst_timer_elapsed(void)86 struct timespec tst_timer_elapsed(void)
87 {
88 	return tst_timespec_diff(stop_time, start_time);
89 }
90