'\"macro stdmacro
.\"
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.\" 
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.\" under the terms of the GNU General Public License as published by the
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.TH PMLOOKUPTEXT 3 "PCP" "Performance Co-Pilot"
.SH NAME
\f3pmLookupText\f1 \- return text describing a performance metric
.SH "C SYNOPSIS"
.ft 3
#include <pcp/pmapi.h>
.sp
.nf
int pmLookupText(pmID \fIpmid\fP, int \fIlevel\fP, char **\fIbuffer\fP);
.fi
.sp
cc ... \-lpcp
.ft 1
.SH DESCRIPTION
Provided the source of metrics from
the current
Performance Metrics Application Programming Interface (PMAPI)
context is a host,
retrieve descriptive text about the performance
metric identified by
.IR pmid .
.PP
The argument
.I level
should be 
.BR PM_TEXT_ONELINE
for a one-line summary, else
.BR PM_TEXT_HELP
for a more verbose description, suited to a help dialog. 
.PP
The space pointed to by
.I buffer
will have been allocated in
.B pmLookupText
with
.BR malloc (3C),
and it is the responsibility of the caller to
.BR free (3C)
the space when it is no longer required.
.PP
.B pmLookupText
returns zero on success.
.SH SEE ALSO
.BR chkhelp (1),
.BR newhelp (1),
.BR PMAPI (3),
.BR pmGetConfig (3),
.BR pmLookupDesc (3),
.BR pmLookupInDomText (3),
.BR pcp.conf (5)
and
.BR pcp.env (5).
.SH DIAGNOSTICS
.IP \f3PM_ERR_NOTHOST\f1
if the current PMAPI context is an archive log
(help and one-line text is not maintained in the archive logs)