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/*
* Solaris PMDA
*
* Collect performance data from the Solaris kernel using kstat() for
* the most part.
*
* Copyright (c) 2004 Silicon Graphics, Inc. All Rights Reserved.
* Copyright (c) 2010 Max Matveev. 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 <sys/time.h>
#include "common.h"
static int _isDSO = 1;
static char mypath[MAXPATHLEN];
/*
* wrapper for pmdaFetch which primes the methods ready for
* the next fetch
* ... real callback is fetch_callback()
*/
static int
solaris_fetch(int numpmid, pmID pmidlist[], pmResult **resp, pmdaExt *pmda)
{
int i;
kstat_ctl_needs_update();
for (i = 0; i < methodtab_sz; i++) {
methodtab[i].m_fetched = 0;
}
return pmdaFetch(numpmid, pmidlist, resp, pmda);
}
/*
* callback provided to pmdaFetch
*/
static int
solaris_fetch_callback(pmdaMetric *mdesc, unsigned int inst, pmAtomValue *atom)
{
metricdesc_t *mdp = (metricdesc_t *)mdesc->m_user;
int cluster = pmid_cluster(mdesc->m_desc.pmid);
method_t *m = methodtab + cluster;
hrtime_t start;
int rv;
__pmID_int *id = __pmid_int(&mdesc->m_desc.pmid);
if (cluster == 4095) {
switch (id->item) {
case 0: /* pmda.prefetch.time */
if ((inst <= 0) || (inst > methodtab_sz+1))
return PM_ERR_INST;
atom->ull = methodtab[inst-1].m_elapsed;
return 1;
case 1: /* pmda.prefetch.count */
if ((inst <= 0) || (inst > methodtab_sz+1))
return PM_ERR_INST;
atom->ull = methodtab[inst-1].m_hits;
return 1;
case 2: /* pmda.metric.time */
if ((inst <= 0) || (inst > metrictab_sz+1))
return PM_ERR_INST;
atom->ull = metricdesc[inst-1].md_elapsed;
return 1;
case 3: /* pmda.metric.count */
if ((inst <= 0) || (inst > metrictab_sz+1))
return PM_ERR_INST;
atom->ull = metricdesc[inst-1].md_hits;
return 1;
default:
return PM_ERR_PMID;
}
} else if (cluster >= methodtab_sz) {
return PM_ERR_PMID;
}
if (!m->m_fetched && m->m_prefetch) {
start = gethrtime();
m->m_prefetch();
m->m_elapsed = gethrtime() - start;
m->m_hits++;
m->m_fetched = 1;
}
start = gethrtime();
rv = m->m_fetch(mdesc, inst, atom);
mdp->md_elapsed = gethrtime() - start;
mdp->md_hits++;
return rv;
}
/*
* Initialise the agent (both daemon and DSO).
*/
void
__PMDA_INIT_CALL
solaris_init(pmdaInterface *dp)
{
if (_isDSO) {
int sep = __pmPathSeparator();
snprintf(mypath, sizeof(mypath), "%s%c" "solaris" "%c" "help",
pmGetConfig("PCP_PMDAS_DIR"), sep, sep);
pmdaDSO(dp, PMDA_INTERFACE_3, "Solaris DSO", mypath);
}
if (dp->status != 0)
return;
dp->version.two.fetch = solaris_fetch;
pmdaSetFetchCallBack(dp, solaris_fetch_callback);
init_data(dp->domain);
pmdaInit(dp, indomtab, indomtab_sz, metrictab, metrictab_sz);
}
static void
usage(void)
{
fprintf(stderr, "Usage: %s [options]\n\n", pmProgname);
fputs("Options:\n"
" -d domain use domain (numeric) for metrics domain of PMDA\n"
" -l logfile write log into logfile rather than using default log name\n"
" -N namespace verify consistency of internal metrics with the namespace\n",
stderr);
exit(1);
}
static void
checkname(const char *mname)
{
int i;
for (i = 0; i < metrictab_sz; i++) {
if (strcmp(mname, metricdesc[i].md_name) == 0)
return;
}
printf ("Cannot find %s in the code\n", mname);
}
/*
* Set up the agent if running as a daemon.
*/
int
main(int argc, char **argv)
{
int err = 0;
int sep = __pmPathSeparator();
pmdaInterface desc;
int c;
char *namespace = NULL;
_isDSO = 0;
__pmSetProgname(argv[0]);
snprintf(mypath, sizeof(mypath), "%s%c" "solaris" "%c" "help",
pmGetConfig("PCP_PMDAS_DIR"), sep, sep);
pmdaDaemon(&desc, PMDA_INTERFACE_3, pmProgname, SOLARIS,
"solaris.log", mypath);
while ((c = pmdaGetOpt(argc, argv, "N:D:d:l:?", &desc, &err)) != EOF) {
switch (c) {
case 'N':
namespace = optarg;
break;
default:
err++;
break;
}
}
if (err)
usage();
if (namespace) {
if (pmLoadNameSpace(namespace))
exit(1);
for (c = 0; c < metrictab_sz; c++) {
char *name;
int e;
__pmID_int *id = __pmid_int(&metricdesc[c].md_desc.pmid);
id->domain = desc.domain;
if ((e = pmNameID(metricdesc[c].md_desc.pmid, &name)) != 0) {
printf ("Cannot find %s(%s) in %s: %s\n",
metricdesc[c].md_name,
pmIDStr(metricdesc[c].md_desc.pmid),
namespace, pmErrStr(e));
} else {
if (strcmp(name, metricdesc[c].md_name)) {
printf ("%s is %s in the %s but %s in code\n",
pmIDStr(metricdesc[c].md_desc.pmid),
name, namespace,metricdesc[c].md_name);
}
}
}
pmTraversePMNS("", checkname);
exit (0);
}
pmdaOpenLog(&desc);
solaris_init(&desc);
pmdaConnect(&desc);
pmdaMain(&desc);
exit(0);
}
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