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1 | <h2>clock_get_attributes</h2> |
2 | <hr> | |
3 | <p> | |
4 | <strong>Function</strong> - Return attributes of a clock. | |
5 | <h3>SYNOPSIS</h3> | |
6 | <pre> | |
7 | <strong>kern_return_t clock_get_attributes</strong> | |
8 | <strong>(clock_t</strong> <var>clock_name</var>, | |
9 | <strong>clock_flavor_t</strong> <var>flavor</var>, | |
10 | <strong>clock_attr_t</strong> <var>attribute</var>, | |
11 | <strong>mach_msg_type_number_t</strong> <var>attribute_count</var><strong>);</strong> | |
12 | </pre> | |
13 | <h3>PARAMETERS</h3> | |
14 | <dl> | |
15 | <p> | |
16 | <dt> <var>clock_name</var> | |
17 | <dd> | |
18 | [in clock-name send right] | |
19 | The name (or control) port for the clock. | |
20 | <p> | |
21 | <dt> <var>flavor</var> | |
22 | <dd> | |
23 | [in scalar] | |
24 | Type of information desired. Defined values are: | |
25 | <dl> | |
26 | <p> | |
27 | <dt> <strong>CLOCK_GET_TIME_RES</strong> | |
28 | <dd> | |
29 | The resolution, in nanoseconds, with which the value returned | |
30 | by <strong>clock_get_time</strong> is updated. | |
31 | <p> | |
32 | <dt> <strong>CLOCK_MAP_TIME_RES</strong> | |
33 | <dd> | |
34 | The resolution, in nanoseconds, with which the value visible | |
35 | via <strong>clock_map_time</strong> is updated. | |
36 | <p> | |
37 | <dt> <strong>CLOCK_ALARM_CURRES</strong> | |
38 | <dd> | |
39 | The resolution, in nanoseconds, at which clock alarm and | |
40 | sleep timers are currently serviced. | |
41 | <p> | |
42 | <dt> <strong>CLOCK_ALARM_MINRES</strong> | |
43 | <dd> | |
44 | The minimum resolution, in nanoseconds, at which clock | |
45 | alarm and sleep timers can be serviced. | |
46 | <p> | |
47 | <dt> <strong>CLOCK_ALARM_MAXRES</strong> | |
48 | <dd> | |
49 | The maximum resolution, in nanoseconds, at which clock | |
50 | alarm and sleep timers can be serviced. | |
51 | </dl> | |
52 | <p> | |
53 | <dt> <var>attribute</var> | |
54 | <dd> | |
55 | [out scalar] | |
56 | The returned attribute. | |
57 | <p> | |
58 | <dt> <var>attribute_count</var> | |
59 | <dd> | |
60 | [in/out scalar] | |
61 | On input, the maximum size of the buffer; on output, the | |
62 | size returned (in natural-sized units). | |
63 | </dl> | |
64 | <h3>DESCRIPTION</h3> | |
65 | <p> | |
66 | The <strong>clock_get_attributes</strong> function returns attributes of a clock's | |
67 | implementation or operation. | |
68 | <h3>RETURN VALUES</h3> | |
69 | <p> | |
70 | Only generic errors apply. | |
71 | <h3>RELATED INFORMATION</h3> | |
72 | <p> | |
73 | Functions: | |
74 | <a href="host_get_clock_service.html"><strong>host_get_clock_service</strong></a>, | |
75 | <a href="clock_get_time.html"><strong>clock_get_time</strong></a>, | |
76 | <a href="clock_map_time.html"><strong>clock_map_time</strong></a>, | |
77 | <a href="clock_sleep.html"><strong>clock_sleep</strong></a>, | |
78 | <a href="clock_alarm.html"><strong>clock_alarm</strong></a>, | |
79 | <a href="clock_set_attributes.html"><strong>clock_set_attributes</strong></a>. |