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POSIX_TRACE_ATTR_GETCLOCKRES
Section: POSIX Programmer's Manual (3P)
Updated: 2003
Index
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PROLOG
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.
NAME
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)
SYNOPSIS
#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);
DESCRIPTION
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.
RETURN VALUE
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.
ERRORS
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.
EXAMPLES
None.
APPLICATION USAGE
None.
RATIONALE
None.
FUTURE DIRECTIONS
None.
SEE ALSO
posix_trace_attr_init(), posix_trace_create(), posix_trace_get_attr()
,
uname(), the Base Definitions volume of IEEE Std 1003.1-2001,
<time.h>, <trace.h>
COPYRIGHT
Portions of this text are reprinted and reproduced in electronic form
from IEEE Std 1003.1, 2003 Edition, Standard for Information Technology
-- Portable Operating System Interface (POSIX), The Open Group Base
Specifications Issue 6, Copyright (C) 2001-2003 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 .
Index
- PROLOG
-
- NAME
-
- SYNOPSIS
-
- DESCRIPTION
-
- RETURN VALUE
-
- ERRORS
-
- EXAMPLES
-
- APPLICATION USAGE
-
- RATIONALE
-
- FUTURE DIRECTIONS
-
- SEE ALSO
-
- COPYRIGHT
-
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