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pmdaopenlog(3) — Linux manual page

PMDAOPENLOG(3)           Library Functions ManualPMDAOPENLOG(3)

NAME        top

pmdaOpenLog- redirect stderr to a logfile

C SYNOPSIS        top

#include <pcp/pmapi.h>#include <pcp/pmda.h>void pmdaOpenLog(pmdaInterface *dispatch);cc ... -lpcp_pmda -lpcp

DESCRIPTION        top

pmdaOpenLogredirectsstderr to the logfile specified in thedis‐patch structure, set by the  previous  call  topmdaDaemon(3)  orpmdaGetOpt(3).   The  first  line  of the log file will detail the       name of the calling process, the host the process is  running  on,       and  the  current time.  In addition, the log is appended with the       exit time of the process by a routine registered withatexit(3).

CAVEAT        top

       The PMDA must be usingPMDA_INTERFACE_2or later, as specified  in       the call topmdaDSO(3) orpmdaDaemon(3).

PCP ENVIRONMENT        top

       Environment  variables with the prefixPCP_are used to parameter‐       ize the file and directory names used by PCP.  On  each  installa‐       tion,  the  file/etc/pcp.conf contains the local values for these       variables.  The$PCP_CONFvariable may be used to specify  an  al‐       ternative configuration file, as described inpcp.conf(5).  Values       for  these  variables  may  be obtained programmatically using thepmGetConfig(3) function.

SEE ALSO        top

pmcd(1),atexit(2),PMAPI(3),PMDA(3),pmdaDaemon(3)   andpmdaGetOpt(3).

COLOPHON        top

       This  page is part of thePCP (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       2025-08-11.   (At  that  time,  the date of the most recent commit       that was found in the repository was 2025-08-11.)  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 isnot part of the original manual page),  send  a       mail to man-pages@man7.orgPerformance Co-Pilot               PCPPMDAOPENLOG(3)

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