получить идентификаторы экземпляра для домена экземпляра показателей производительности (get instance identifiers for a performance metrics instance domain)
Имя (Name)
pmGetInDom - get instance identifiers for a performance metrics
instance domain
Синопсис C (C Synopsis)
#include <pcp/pmapi.h>
int pmGetInDom(pmInDom indom, int **instlist, char ***namelist);
cc ... -lpcp
Описание (Description)
In the current Performance Metrics Application Programming
Interface (PMAPI) context, locate the description of the instance
domain indom, and return via instlist the internal instance
identifiers for all instances, and via namelist the full external
identifiers for all instances. The number of instances found is
returned as the function value (else less than zero to indicate
an error).
The value for the instance domain indom is typically extracted
from a pmDesc structure, following a call to pmLookupDesc(3) for
a particular performance metric.
The resulting lists of instance identifiers (instlist and
namelist), and the names that the elements of namelist point to,
will have been allocated by pmGetInDom with two calls to
malloc(3), and it is the responsibility of the caller to
free(instlist) and free(namelist) to release the space when it is
no longer required.
When the result of pmGetInDom is less than one, both instlist and
namelist are undefined (no space will have been allocated, and so
calling free(3) is a singularly bad idea).
Диагностика (Diagnostic)
PM_ERR_INDOM
indom is not a valid instance domain identifier
Окружение PCP (PCP environment)
Environment variables with the prefix PCP_ are used to
parameterize the file and directory names used by PCP. On each
installation, the file /etc/pcp.conf contains the local values
for these variables. The $PCP_CONF variable may be used to
specify an alternative configuration file, as described in
pcp.conf(5). Values for these variables may be obtained
programmatically using the pmGetConfig(3) function.
Смотри также (See also)
PMAPI(3), pmGetConfig(3), pmGetInDomArchive(3), pmLookupDesc(3),
pmLookupInDom(3), pmNameInDom(3), pcp.conf(5) and pcp.env(5).
