__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 flag
DBG_TRACE_FETCH
is defined in
/usr/include/pcp/impl.h
and may be specified in
spec
as
2,
FETCH
or
fetch.
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.