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PROLOG | NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | ERRORS | EXAMPLES | APPLICATION USAGE | RATIONALE | FUTURE DIRECTIONS | SEE ALSO | COPYRIGHT |
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POSIX_TR...CLOCKRES(3P) POSIX Programmer's Manual POSIX_TR...CLOCKRES(3P)
This manual page is part of the POSIX Programmer's Manual. The
Linux implementation of this interface may differ (consult the
corresponding Linux manual page for details of Linux behavior), or
the interface may not be implemented on Linux.
posix_trace_attr_getclockres, posix_trace_attr_getcreatetime,
posix_trace_attr_getgenversion, posix_trace_attr_getname,
posix_trace_attr_setname — retrieve and set information about a
trace stream (TRACING)
#include <time.h>
#include <trace.h>
int posix_trace_attr_getclockres(const trace_attr_t *attr,
struct timespec *resolution);
int posix_trace_attr_getcreatetime(const trace_attr_t *attr,
struct timespec *createtime);
#include <trace.h>
int posix_trace_attr_getgenversion(const trace_attr_t *attr,
char *genversion);
int posix_trace_attr_getname(const trace_attr_t *attr,
char *tracename);
int posix_trace_attr_setname(trace_attr_t *attr,
const char *tracename);
The posix_trace_attr_getclockres() function shall copy the clock
resolution of the clock used to generate timestamps from the
clock-resolution attribute of the attributes object pointed to by
the attr argument into the structure pointed to by the resolution
argument.
The posix_trace_attr_getcreatetime() function shall copy the trace
stream creation time from the creation-time attribute of the
attributes object pointed to by the attr argument into the
structure pointed to by the createtime argument. The creation-time
attribute shall represent the time of creation of the trace
stream.
The posix_trace_attr_getgenversion() function shall copy the
string containing version information from the generation-version
attribute of the attributes object pointed to by the attr argument
into the string pointed to by the genversion argument. The
genversion argument shall be the address of a character array
which can store at least {TRACE_NAME_MAX} characters.
The posix_trace_attr_getname() function shall copy the string
containing the trace name from the trace-name attribute of the
attributes object pointed to by the attr argument into the string
pointed to by the tracename argument. The tracename argument shall
be the address of a character array which can store at least
{TRACE_NAME_MAX} characters.
The posix_trace_attr_setname() function shall set the name in the
trace-name attribute of the attributes object pointed to by the
attr argument, using the trace name string supplied by the
tracename argument. If the supplied string contains more than
{TRACE_NAME_MAX} characters, the name copied into the trace-name
attribute may be truncated to one less than the length of
{TRACE_NAME_MAX} characters. The default value is a null string.
Upon successful completion, these functions shall return a value
of zero. Otherwise, they shall return the corresponding error
number.
If successful, the posix_trace_attr_getclockres() function stores
the clock-resolution attribute value in the object pointed to by
resolution. Otherwise, the content of this object is unspecified.
If successful, the posix_trace_attr_getcreatetime() function
stores the trace stream creation time in the object pointed to by
createtime. Otherwise, the content of this object is unspecified.
If successful, the posix_trace_attr_getgenversion() function
stores the trace version information in the string pointed to by
genversion. Otherwise, the content of this string is unspecified.
If successful, the posix_trace_attr_getname() function stores the
trace name in the string pointed to by tracename. Otherwise, the
content of this string is unspecified.
The posix_trace_attr_getclockres(),
posix_trace_attr_getcreatetime(),
posix_trace_attr_getgenversion(), and posix_trace_attr_getname()
functions may fail if:
EINVAL The value specified by one of the arguments is invalid.
The following sections are informative.
None.
None.
None.
The posix_trace_attr_getclockres(),
posix_trace_attr_getcreatetime(),
posix_trace_attr_getgenversion(), posix_trace_attr_getname(), and
posix_trace_attr_setname() functions may be removed in a future
version.
posix_trace_attr_destroy(3p), posix_trace_create(3p),
posix_trace_get_attr(3p), uname(3p)
The Base Definitions volume of POSIX.1‐2017, time.h(0p),
trace.h(0p)
Portions of this text are reprinted and reproduced in electronic
form from IEEE Std 1003.1-2017, Standard for Information
Technology -- Portable Operating System Interface (POSIX), The
Open Group Base Specifications Issue 7, 2018 Edition, Copyright
(C) 2018 by the Institute of Electrical and Electronics Engineers,
Inc and The Open Group. In the event of any discrepancy between
this version and the original IEEE and The Open Group Standard,
the original IEEE and The Open Group Standard is the referee
document. The original Standard can be obtained online at
http://www.opengroup.org/unix/online.html .
Any typographical or formatting errors that appear in this page
are most likely to have been introduced during the conversion of
the source files to man page format. To report such errors, see
https://www.kernel.org/doc/man-pages/reporting_bugs.html .
IEEE/The Open Group 2017 POSIX_TR...CLOCKRES(3P)
Pages that refer to this page: trace.h(0p), posix_trace_attr_getname(3p), posix_trace_attr_setname(3p)
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HTML rendering created 2025-09-06 by Michael Kerrisk, author of The Linux Programming Interface. For details of in-depth Linux/UNIX system programming training courses that I teach, look here. Hosting by jambit GmbH. |
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