Re: [pcp] pmfg / pmapi / null indom

[Marko Myllynen <myllynen@xxxxxxxxxx>]

Hi,

On 2016-09-27 21:28, Nathan Scott wrote:
> ----- Original Message -----
>>
>> Consider the following example:
>>
>> #!/usr/bin/python
>>
>> from pcp import pmapi
>>
>> pmfg = pmapi.fetchgroup()
>> sysload = pmfg.extend_indom("kernel.all.sysfork")
>>
>> pmfg.fetch()
>> for inst, name, value in sysload():
>>     print("inst: %d" % inst)
>>
>> This prints:
>>
>> inst: -1
>>
>> Is this some constant or should this be None in the land of Python?
> 
> Its cpmapi.PM_IN_NULL (aka "grep PM_IN_NULL /usr/include/pcp/pmapi.h")

$ cat ./test.py
#!/usr/bin/python
from cpmapi import PM_IN_NULL
print(PM_IN_NULL)
$ python ./test.py
4294967295
$ grep PM_IN_NULL /usr/include/pcp/pmapi.h
#define PM_IN_NULL      0xffffffff
$

Cheers,

-- 
Marko Myllynen