преобразовать идентификатор домена экземпляра метрики производительности в строку (convert a performance metric instance domain identifier into a string)
Имя (Name)
pmInDomStr, pmInDomStr_r - convert a performance metric instance
domain identifier into a string
Синопсис C (C Synopsis)
#include <pcp/pmapi.h>
const char *pmInDomStr(pmInDom indom);
char *pmInDomStr_r(pmInDom indom, char *buf, int buflen);
cc ... -lpcp
Описание (Description)
For use in error and diagnostic messages, pmInDomStr return a
'human readable' version of the specified instance domain
identifier. The pmInDomStr_r function does the same, but stores
the result in a user-supplied buffer buf of length buflen, which
should have room for at least 20 bytes.
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.
Internally, an instance domain identifier is encoded with two
fields: domain and serial.
pmInDomStr returns a string with each of the fields appearing as
decimal numbers, separated by periods.
The string value returned by pmInDomStr is held in a single
static buffer, so the returned value is only valid until the next
call to pmInDomStr.
Примечание (Note)
pmInDomStr returns a pointer to a static buffer and hence is not
thread-safe. Multi-threaded applications should use pmInDomStr_r
instead.
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), pmIDStr(3), pmTypeStr(3), pmSemStr(3),
pmUnitsStr(3), pmLookupDesc(3), pcp.conf(5) and pcp.env(5).
