pmparsedebug(3) — Linux manual page


PMPARSEDEBUG(3)         Library Functions Manual         PMPARSEDEBUG(3)

NAME         top

       __pmParseDebug, __pmSetDebugBits - manipulate old-style PCP
       debugging control bit-fields

C SYNOPSIS         top

       #include <pcp/pmapi.h>
       #include <pcp/deprecated.h>

       int __pmParseDebug(const char *spec);
       void __pmSetDebugBits(int value);

       cc ... -lpcp

DESCRIPTION         top

       These routine have been deprecated and may be removed in a future
       Performance Co-Pilot (PCP) release.  Please refer to
       pmSetDebug(3) and pmClearDebug(3) for replacement functionality.

       __pmParseDebug parses spec assuming it to be a comma separated
       list of PCP debug flags.

       Each flag may be specified as an integer or the trailing portion
       of the symbolic name of the corresponding flag as reported by
       pmdbg(1).  Symbolic names are stripped of the ``DBG_TRACE_''
       prefix and may appear in either case.

       As a special case, the values ``-1'' and ``ALL'' are treated as
       synonyms for turning on all bits except the sign bit in the
       result, i.e. INT_MAX from <limits.h>.

       For example the debug option fetch is defined in the output from
       pmdbg(3) with the -L option and may be specified in spec as 2,
       FETCH or fetch.

       __pmSetDebugBits may be used to set the bit-fields directly using
       the encoding in value.  The effect is additive, so consecutive
       calls to __pmSetDebugBits will set the conjunction of the bits in
       the value arguments.  To clear the bit-fields, see

DIAGNOSTICS         top

       If successful, __pmParseDebug returns the value computed by the
       bit-wise ``or'' of each flag in the spec, suitable for assigning
       to the global debug trace control variable pmDebug.  Otherwise
       the return value is less than 0 to indicate a parsing error.

SEE ALSO         top

       pmdbg(1), pmSetDebug(3) and pmClearDebug(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
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       (which is not part of the original manual page), send a mail to

Performance Co-Pilot               PCP                   PMPARSEDEBUG(3)

Pages that refer to this page: pmdbg(1)