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
13 posix_trace_attr_getclockres, posix_trace_attr_getcreatetime,
14 posix_trace_attr_getgenversion, posix_trace_attr_getname,
15 posix_trace_attr_setname — retrieve and set information about a trace
16 stream (TRACING)
17
19 #include <time.h>
20 #include <trace.h>
21 int posix_trace_attr_getclockres(const trace_attr_t *attr,
23 struct timespec *resolution);
24 int posix_trace_attr_getcreatetime(const trace_attr_t *attr,
25 struct timespec *createtime);
26 #include <trace.h>
28 int posix_trace_attr_getgenversion(const trace_attr_t *attr,
30 char *genversion);
31 int posix_trace_attr_getname(const trace_attr_t *attr,
32 char *tracename);
33 int posix_trace_attr_setname(trace_attr_t *attr,
34 const char *tracename);
35
37 The posix_trace_attr_getclockres() function shall copy the clock reso‐
38 lution of the clock used to generate timestamps from the clock-resolu‐
39 tion attribute of the attributes object pointed to by the attr argument
40 into the structure pointed to by the resolution argument.
41 The posix_trace_attr_getcreatetime() function shall copy the trace
43 stream creation time from the creation-time attribute of the attributes
44 object pointed to by the attr argument into the structure pointed to by
45 the createtime argument. The creation-time attribute shall represent
46 the time of creation of the trace stream.
47 The posix_trace_attr_getgenversion() function shall copy the string
49 containing version information from the generation-version attribute of
50 the attributes object pointed to by the attr argument into the string
51 pointed to by the genversion argument. The genversion argument shall be
52 the address of a character array which can store at least
53 {TRACE_NAME_MAX} characters.
54 The posix_trace_attr_getname() function shall copy the string contain‐
56 ing the trace name from the trace-name attribute of the attributes
57 object pointed to by the attr argument into the string pointed to by
58 the tracename argument. The tracename argument shall be the address of
59 a character array which can store at least {TRACE_NAME_MAX} characters.
60 The posix_trace_attr_setname() function shall set the name in the
62 trace-name attribute of the attributes object pointed to by the attr
63 argument, using the trace name string supplied by the tracename argu‐
64 ment. If the supplied string contains more than {TRACE_NAME_MAX} char‐
65 acters, the name copied into the trace-name attribute may be truncated
66 to one less than the length of {TRACE_NAME_MAX} characters. The default
67 value is a null string.
68
70 Upon successful completion, these functions shall return a value of
71 zero. Otherwise, they shall return the corresponding error number.
72 If successful, the posix_trace_attr_getclockres() function stores the
74 clock-resolution attribute value in the object pointed to by resolu‐
75 tion. Otherwise, the content of this object is unspecified.
76 If successful, the posix_trace_attr_getcreatetime() function stores the
78 trace stream creation time in the object pointed to by createtime.
79 Otherwise, the content of this object is unspecified.
80 If successful, the posix_trace_attr_getgenversion() function stores the
82 trace version information in the string pointed to by genversion. Oth‐
83 erwise, the content of this string is unspecified.
84 If successful, the posix_trace_attr_getname() function stores the trace
86 name in the string pointed to by tracename. Otherwise, the content of
87 this string is unspecified.
88
90 The posix_trace_attr_getclockres(), posix_trace_attr_getcreatetime(),
91 posix_trace_attr_getgenversion(), and posix_trace_attr_getname() func‐
92 tions may fail if:
93 EINVAL The value specified by one of the arguments is invalid.
95 The following sections are informative.
97
99 None.
100
102 None.
103
105 None.
106
108 The posix_trace_attr_getclockres(), posix_trace_attr_getcreatetime(),
109 posix_trace_attr_getgenversion(), posix_trace_attr_getname(), and
110 posix_trace_attr_setname() functions may be removed in a future ver‐
111 sion.
112
114 posix_trace_attr_destroy(), posix_trace_create(),
115 posix_trace_get_attr(), uname()
116 The Base Definitions volume of POSIX.1‐2008, <time.h>, <trace.h>
118
120 Portions of this text are reprinted and reproduced in electronic form
121 from IEEE Std 1003.1, 2013 Edition, Standard for Information Technology
122 -- Portable Operating System Interface (POSIX), The Open Group Base
123 Specifications Issue 7, Copyright (C) 2013 by the Institute of Electri‐
124 cal and Electronics Engineers, Inc and The Open Group. (This is
125 POSIX.1-2008 with the 2013 Technical Corrigendum 1 applied.) In the
126 event of any discrepancy between this version and the original IEEE and
127 The Open Group Standard, the original IEEE and The Open Group Standard
128 is the referee document. The original Standard can be obtained online
129 at http://www.unix.org/online.html .
130 Any typographical or formatting errors that appear in this page are
132 most likely to have been introduced during the conversion of the source
133 files to man page format. To report such errors, see https://www.ker‐
134 nel.org/doc/man-pages/reporting_bugs.html .
135IEEE/The Open Group 2013 POSIX_TRACE_ATTR_GETCLOCKRES(3P)