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POSIX_TRACE_ATTR_GETCLOCKRES(3P)Programmer'sPManualRACE_ATTR_GETCLOCKRES(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.1‐2008, time.h(0p), trace.h(0p)
Portions of this text are reprinted and reproduced in electronic form
from IEEE Std 1003.1, 2013 Edition, Standard for Information
Technology -- Portable Operating System Interface (POSIX), The Open
Group Base Specifications Issue 7, Copyright (C) 2013 by the
Institute of Electrical and Electronics Engineers, Inc and The Open
Group. (This is POSIX.1-2008 with the 2013 Technical Corrigendum 1
applied.) 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.unix.org/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 2013 POSIX_TRACE_ATTR_GETCLOCKRES(3P)
Pages that refer to this page: trace.h(0p), posix_trace_attr_getname(3p), posix_trace_attr_setname(3p)