1POSIX_TRACE_ATTR_GETCLOCKRESP(O3SPI)X Programmer's MPaOnSuIaXl_TRACE_ATTR_GETCLOCKRES(3P)
2
6 This manual page is part of the POSIX Programmer's Manual. The Linux
7 implementation of this interface may differ (consult the corresponding
8 Linux manual page for details of Linux behavior), or the interface may
9 not be implemented on Linux.
10
12 posix_trace_attr_getclockres, posix_trace_attr_getcreatetime,
13 posix_trace_attr_getgenversion, posix_trace_attr_getname,
14 posix_trace_attr_setname — retrieve and set information about a trace
15 stream (TRACING)
16
18 #include <time.h>
19 #include <trace.h>
20 int posix_trace_attr_getclockres(const trace_attr_t *attr,
22 struct timespec *resolution);
23 int posix_trace_attr_getcreatetime(const trace_attr_t *attr,
24 struct timespec *createtime);
25 #include <trace.h>
27 int posix_trace_attr_getgenversion(const trace_attr_t *attr,
29 char *genversion);
30 int posix_trace_attr_getname(const trace_attr_t *attr,
31 char *tracename);
32 int posix_trace_attr_setname(trace_attr_t *attr,
33 const char *tracename);
34
36 The posix_trace_attr_getclockres() function shall copy the clock reso‐
37 lution of the clock used to generate timestamps from the clock-resolu‐
38 tion attribute of the attributes object pointed to by the attr argument
39 into the structure pointed to by the resolution argument.
40 The posix_trace_attr_getcreatetime() function shall copy the trace
42 stream creation time from the creation-time attribute of the attributes
43 object pointed to by the attr argument into the structure pointed to by
44 the createtime argument. The creation-time attribute shall represent
45 the time of creation of the trace stream.
46 The posix_trace_attr_getgenversion() function shall copy the string
48 containing version information from the generation-version attribute of
49 the attributes object pointed to by the attr argument into the string
50 pointed to by the genversion argument. The genversion argument shall be
51 the address of a character array which can store at least
52 {TRACE_NAME_MAX} characters.
53 The posix_trace_attr_getname() function shall copy the string contain‐
55 ing the trace name from the trace-name attribute of the attributes
56 object pointed to by the attr argument into the string pointed to by
57 the tracename argument. The tracename argument shall be the address of
58 a character array which can store at least {TRACE_NAME_MAX} characters.
59 The posix_trace_attr_setname() function shall set the name in the
61 trace-name attribute of the attributes object pointed to by the attr
62 argument, using the trace name string supplied by the tracename argu‐
63 ment. If the supplied string contains more than {TRACE_NAME_MAX} char‐
64 acters, the name copied into the trace-name attribute may be truncated
65 to one less than the length of {TRACE_NAME_MAX} characters. The default
66 value is a null string.
67
69 Upon successful completion, these functions shall return a value of
70 zero. Otherwise, they shall return the corresponding error number.
71 If successful, the posix_trace_attr_getclockres() function stores the
73 clock-resolution attribute value in the object pointed to by resolu‐
74 tion. Otherwise, the content of this object is unspecified.
75 If successful, the posix_trace_attr_getcreatetime() function stores the
77 trace stream creation time in the object pointed to by createtime.
78 Otherwise, the content of this object is unspecified.
79 If successful, the posix_trace_attr_getgenversion() function stores the
81 trace version information in the string pointed to by genversion. Oth‐
82 erwise, the content of this string is unspecified.
83 If successful, the posix_trace_attr_getname() function stores the trace
85 name in the string pointed to by tracename. Otherwise, the content of
86 this string is unspecified.
87
89 The posix_trace_attr_getclockres(), posix_trace_attr_getcreatetime(),
90 posix_trace_attr_getgenversion(), and posix_trace_attr_getname() func‐
91 tions may fail if:
92 EINVAL The value specified by one of the arguments is invalid.
94 The following sections are informative.
96
98 None.
99
101 None.
102
104 None.
105
107 The posix_trace_attr_getclockres(), posix_trace_attr_getcreatetime(),
108 posix_trace_attr_getgenversion(), posix_trace_attr_getname(), and
109 posix_trace_attr_setname() functions may be removed in a future ver‐
110 sion.
111
113 posix_trace_attr_destroy(), posix_trace_create(),
114 posix_trace_get_attr(), uname()
115 The Base Definitions volume of POSIX.1‐2017, <time.h>, <trace.h>
117
119 Portions of this text are reprinted and reproduced in electronic form
120 from IEEE Std 1003.1-2017, Standard for Information Technology -- Por‐
121 table Operating System Interface (POSIX), The Open Group Base Specifi‐
122 cations Issue 7, 2018 Edition, Copyright (C) 2018 by the Institute of
123 Electrical and Electronics Engineers, Inc and The Open Group. In the
124 event of any discrepancy between this version and the original IEEE and
125 The Open Group Standard, the original IEEE and The Open Group Standard
126 is the referee document. The original Standard can be obtained online
127 at http://www.opengroup.org/unix/online.html .
128 Any typographical or formatting errors that appear in this page are
130 most likely to have been introduced during the conversion of the source
131 files to man page format. To report such errors, see https://www.ker‐
132 nel.org/doc/man-pages/reporting_bugs.html .
133IEEE/The Open Group 2017 POSIX_TRACE_ATTR_GETCLOCKRES(3P)