pmerrstr(3) — Linux manual page


PMERRSTR(3)             Library Functions Manual             PMERRSTR(3)

NAME         top

       pmErrStr, pmErrStr_r - convert a PMAPI error code into a string

C SYNOPSIS         top

       #include <pcp/pmapi.h>

       const char *pmErrStr(int code);
       char *pmErrStr_r(int code, char *buf, int buflen);

       cc ... -lpcp

DESCRIPTION         top

       Translate an error code into a text string, suitable for
       generating a diagnostic message.  The pmErrStr_r function does
       the same, but stores the result in a user-supplied buffer buf of
       length buflen, which should have room for at least
       PM_MAXERRMSGLEN bytes.

       By convention, all error codes are negative.  The small values
       are assumed to be negated versions of the Unix error codes as
       defined in <errno.h> and the strings returned are as per
       strerror(3).  The larger, negative error codes are Performance
       Metrics Application Programming Interface (PMAPI) error
       conditions and pmErrStr(3) returns an appropriate PMAPI error
       string, as determined by code.

NOTES         top

       pmErrStr returns a pointer to a static buffer, so the returned
       value is only valid until the next call to pmErrStr and hence is
       not thread-safe.  Multi-threaded applications should use
       pmErrStr_r instead.

SEE ALSO         top

       pmerr(1), PMAPI(3) and perror(3).

COLOPHON         top

       This page is part of the PCP (Performance Co-Pilot) project.
       Information about the project can be found at 
       ⟨⟩.  If you have a bug report for this manual
       page, send it to  This page was obtained from the
       project's upstream Git repository
       ⟨⟩ on 2023-12-22.
       (At that time, the date of the most recent commit that was found
       in the repository was 2023-12-16.)  If you discover any rendering
       problems in this HTML version of the page, or you believe there
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       corrections or improvements to the information in this COLOPHON
       (which is not part of the original manual page), send a mail to

Performance Co-Pilot               PCP                       PMERRSTR(3)

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