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199800b2 JR |
1 | /* |
2 | * lttng-clock-override-test.c | |
3 | * | |
4 | * Copyright (c) 2014 Mathieu Desnoyers <mathieu.desnoyers@efficios.com> | |
5 | * Copyright (c) 2015 Jonthan Rajotte <jonathan.rajotte-julien@efficios.com> | |
6 | * Based on lttng-clock-override-example.c from LTTng-ust example | |
7 | * | |
8 | * Permission is hereby granted, free of charge, to any person obtaining a copy | |
9 | * of this software and associated documentation files (the "Software"), to deal | |
10 | * in the Software without restriction, including without limitation the rights | |
11 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | |
12 | * copies of the Software, and to permit persons to whom the Software is | |
13 | * furnished to do so, subject to the following conditions: | |
14 | * | |
15 | * The above copyright notice and this permission notice shall be included in | |
16 | * all copies or substantial portions of the Software. | |
17 | * | |
18 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
19 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
20 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE | |
21 | * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
22 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | |
23 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE | |
24 | * SOFTWARE. | |
25 | */ | |
26 | ||
27 | #include <stdlib.h> | |
389fbf04 | 28 | #include <common/compat/time.h> |
199800b2 JR |
29 | #include <string.h> |
30 | #include <stdio.h> | |
31 | #include <lttng/ust-clock.h> | |
32 | ||
33 | static | |
34 | uint64_t plugin_read64(void) | |
35 | { | |
36 | /* Freeze time */ | |
37 | return 0; | |
38 | } | |
39 | ||
40 | static | |
41 | uint64_t plugin_freq(void) | |
42 | { | |
43 | return 1000; /* 1KHz clock (very coarse!) */ | |
44 | } | |
45 | ||
46 | static | |
47 | int plugin_uuid(char *uuid) | |
48 | { | |
49 | const char myuuid[] = "83c63deb-7aa4-48fb-abda-946f400d76e6"; | |
50 | memcpy(uuid, myuuid, LTTNG_UST_UUID_STR_LEN); | |
51 | return 0; | |
52 | } | |
53 | ||
54 | static | |
55 | const char *plugin_name(void) | |
56 | { | |
57 | return "lttng_test_clock_override"; | |
58 | } | |
59 | ||
60 | static | |
61 | const char *plugin_description(void) | |
62 | { | |
63 | return "Freeze time with 1KHz for regression test"; | |
64 | } | |
65 | ||
66 | void lttng_ust_clock_plugin_init(void) | |
67 | { | |
68 | int ret; | |
69 | ||
70 | ret = lttng_ust_trace_clock_set_read64_cb(plugin_read64); | |
71 | if (ret) { | |
72 | fprintf(stderr, "Error setting clock override read64 callback: %s\n", | |
73 | strerror(-ret)); | |
74 | goto error; | |
75 | } | |
76 | ret = lttng_ust_trace_clock_set_freq_cb(plugin_freq); | |
77 | if (ret) { | |
78 | fprintf(stderr, "Error setting clock override freq callback: %s\n", | |
79 | strerror(-ret)); | |
80 | goto error; | |
81 | } | |
82 | ret = lttng_ust_trace_clock_set_uuid_cb(plugin_uuid); | |
83 | if (ret) { | |
84 | fprintf(stderr, "Error setting clock override uuid callback: %s\n", | |
85 | strerror(-ret)); | |
86 | goto error; | |
87 | } | |
88 | ||
89 | ret = lttng_ust_trace_clock_set_name_cb(plugin_name); | |
90 | if (ret) { | |
91 | fprintf(stderr, "Error setting clock override name callback: %s\n", | |
92 | strerror(-ret)); | |
93 | goto error; | |
94 | } | |
95 | ||
96 | ret = lttng_ust_trace_clock_set_description_cb(plugin_description); | |
97 | if (ret) { | |
98 | fprintf(stderr, "Error setting clock override description callback: %s\n", | |
99 | strerror(-ret)); | |
100 | goto error; | |
101 | } | |
102 | ||
103 | ret = lttng_ust_enable_trace_clock_override(); | |
104 | if (ret) { | |
105 | fprintf(stderr, "Error enabling clock override: %s\n", | |
106 | strerror(-ret)); | |
107 | goto error; | |
108 | } | |
109 | ||
110 | return; | |
111 | ||
112 | error: | |
113 | exit(EXIT_FAILURE); | |
114 | } |