Originální popis anglicky:
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)
Návod, kniha: POSIX Programmer's Manual
#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.
None.
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>
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
.
