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NAME | C SYNOPSIS | CAVEAT | DESCRIPTION | SEE ALSO | COLOPHON |
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PMPARSETIME(3) Library Functions Manual PMPARSETIME(3)
__pmParseTime, __pmParseHighResTime - parse time point
specification
#include "pmapi.h"
#include "libpcp.h"
int __pmParseTime(const char *string, struct timeval *logStart,
struct timeval *logEnd, struct timeval *rslt,
char **errMsg);
int __pmParseHighResTime(const char *string, struct timespec
*logStart, struct timespec *logEnd, struct timespec *rslt,
char **errMsg);
cc ... -lpcp
This documentation is intended for internal Performance Co-Pilot
(PCP) developer use.
These interfaces are not part of the PCP APIs that are guaranteed
to remain fixed across releases, and they may not work, or may
provide different semantics at some point in the future.
__pmParseTime and __pmParseHighResTime are designed to encapsulate
the interpretation of a time point specification in command line
switches for use by the PCP client tools.
These functions expects to be called with the time point specifi‐
cation as string. If the tool is running against PCP archive(s),
you also need to supply the start time of the first (only) archive
as logStart, and the end of the last (only) archive as logEnd.
See pmGetArchiveLabel(3) and pmGetArchiveEnd(3) for how to obtain
values for these parameters. If the tool is running against a
live feed of performance data, logStart should be the current time
(but could be aligned on the next second for example), while lo‐
gEnd should have its tv_sec component set to PM_MAX_TIME_T.
The rslt structure must be allocated before either calling __pm‐
ParseTime or __pmParseHighResTime.
You also need to set the current PCP reporting time zone to cor‐
rectly reflect the -z and -Z command line parameters before call‐
ing __pmParseTime or __pmParseHighResTime. See pmUseZone(3) and
friends for information on how this is done.
If the conversion is successful, both __pmParseTime and __pmParse‐
HighResTime return 0, and fill in rslt with the time value defined
by the input parameters. If the argument strings could not be
parsed, it returns -1 and a dynamically allocated error message
string in errMsg. Be sure to free(3) this error message string.
PMAPI(3), pmGetArchiveEnd(3), pmGetArchiveLabel(3),
pmNewContextZone(3), pmNewZone(3), pmParseInterval(3),
pmParseTimeWindow(3), pmUseZone(3), __pmConvertTime(3) and __pm‐
ParseCtime(3).
This page is part of the PCP (Performance Co-Pilot) project. In‐
formation about the project can be found at ⟨http://www.pcp.io/⟩.
If you have a bug report for this manual page, send it to
pcp@groups.io. This page was obtained from the project's upstream
Git repository ⟨https://github.com/performancecopilot/pcp.git⟩ on
2025-02-02. (At that time, the date of the most recent commit
that was found in the repository was 2025-01-30.) If you discover
any rendering problems in this HTML version of the page, or you
believe there is a better or more up-to-date source for the page,
or you have corrections or improvements to the information in this
COLOPHON (which is not part of the original manual page), send a
mail to man-pages@man7.org
Performance Co-Pilot PCP PMPARSETIME(3)
Pages that refer to this page: __pmparsectime(3)
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HTML rendering created 2025-02-02 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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