pmnotifyerr(3) — Linux manual page

PMNOTIFYERR(3)          Library Functions Manual          PMNOTIFYERR(3)

NAME

       pmNotifyErr, pmSyslog - standard handling of error messages

C SYNOPSIS

       #include <pcp/pmapi.h>

       void pmNotifyErr(int priority, const char *message, ...);
       void pmSyslog(int onoff);

       cc ... -lpcp

DESCRIPTION

       These routines provide standard handling for error messages from
       within the internals of Performance Co-Pilot (PCP) daemons and
       Performance Metric Domain Agents (PMDAs).

       pmNotifyErr is a printf(3) style function that will format
       message (and any subsequent arguments) with a prefix that
       includes the current date and time from ctime(3), the name of the
       application from pmGetProgname(3), the process's id from
       getpid(2) and the priority.

       priority should be one of the level LOG_ macros defined for
       syslog(3).  Most typically this would be LOG_INFO, LOG_WARNING or
       LOG_ERR.

       pmNotifyErr writes to standard error, which for daemons and PMDAs
       has most likely been redirected to a log file using pmOpenLog(3).
       Additionally message (and any subsequent arguments) may be sent
       forwarded to syslog(3) if pmSyslog has previously been called
       with onoff having a non-zero value.

       Forwarding to syslog(3) can be disabled at any time by calling
       pmSyslog with onoff having a zero value, and this is the starting
       state for each PCP application.

       In the style of syslog(3) message need not include a terminating
       newline character (one will be added if required).

SEE ALSO

       getpid(2), ctime(3), PMAPI(3), pmGetProgname(3), pmOpenLog(3),
       printf(3) and syslog(3).

COLOPHON

       This page is part of the PCP (Performance Co-Pilot) project.
       Information 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 2024-06-14.
       (At that time, the date of the most recent commit that was found
       in the repository was 2024-06-14.)  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                    PMNOTIFYERR(3)

Pages that refer to this page: pmnomem(3)

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