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/*
* AIX PMDA
*
* Collect performance data from the AIX kernel using libperfstat for
* the most part.
*
* Copyright (c) 2012,2014 Red Hat.
* Copyright (c) 2004 Silicon Graphics, Inc. All Rights Reserved.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* for more details.
*/
#include <time.h>
#include "common.h"
static int _isDSO = 1;
static char mypath[MAXPATHLEN];
static char *username;
/*
* wrapper for pmdaFetch which primes the methods ready for
* the next fetch
* ... real callback is fetch_callback()
*/
static int
aix_fetch(int numpmid, pmID pmidlist[], pmResult **resp, pmdaExt *pmda)
{
int i;
// TODO: this should only fetch metrics from "pmidlist"
for (i = 0; i < methodtab_sz; i++) {
methodtab[i].m_prefetch();
}
return pmdaFetch(numpmid, pmidlist, resp, pmda);
}
/*
* callback provided to pmdaFetch
*/
static int
aix_fetch_callback(pmdaMetric *mdesc, unsigned int inst, pmAtomValue *atom)
{
metricdesc_t *mdp;
mdp = (metricdesc_t *)mdesc->m_user;
return methodtab[mdp->md_method].m_fetch(mdesc, inst, atom);
}
/*
* Initialise the agent (both daemon and DSO).
*/
void
aix_init(pmdaInterface *dp)
{
if (_isDSO) {
int sep = __pmPathSeparator();
snprintf(mypath, sizeof(mypath), "%s%c" "aix" "%c" "help",
pmGetConfig("PCP_PMDAS_DIR"), sep, sep);
pmdaDSO(dp, PMDA_INTERFACE_3, "AIX DSO", mypath);
} else {
__pmSetProcessIdentity(username);
}
if (dp->status != 0)
return;
dp->version.two.fetch = aix_fetch;
pmdaSetFetchCallBack(dp, aix_fetch_callback);
init_data(dp->domain);
pmdaInit(dp, indomtab, indomtab_sz, metrictab, metrictab_sz);
}
pmLongOptions longopts[] = {
PMDA_OPTIONS_HEADER("Options"),
PMOPT_DEBUG,
PMDAOPT_DOMAIN,
PMDAOPT_LOGFILE,
PMDAOPT_USERNAME,
PMOPT_HELP,
PMDA_OPTIONS_END
};
pmdaOptions opts = {
.short_options = "D:d:l:U:?",
.long_options = longopts,
};
/*
* Set up the agent if running as a daemon.
*/
int
main(int argc, char **argv)
{
int sep = __pmPathSeparator();
pmdaInterface desc;
_isDSO = 0;
__pmSetProgname(argv[0]);
__pmGetUsername(&username);
snprintf(mypath, sizeof(mypath), "%s%c" "aix" "%c" "help",
pmGetConfig("PCP_PMDAS_DIR"), sep, sep);
pmdaDaemon(&desc, PMDA_INTERFACE_3, pmProgname, AIX, "aix.log", mypath);
pmdaGetOptions(argc, argv, &opts, &desc);
if (opts.errors) {
pmdaUsageMessage(&opts);
exit(1);
}
if (opts.username)
username = opts.username;
pmdaOpenLog(&desc);
aix_init(&desc);
pmdaConnect(&desc);
pmdaMain(&desc);
exit(0);
}
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