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/*
* procmemstat - sample, simple PMAPI client to report your own memory
* usage
*
* Copyright (c) 2013 Red Hat.
* Copyright (c) 2002 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 "pmapi.h"
#include "impl.h"
#include "pmnsmap.h"
static void
get_sample(void)
{
int first = 1;
static pmResult *rp;
static int numpmid;
static pmID *pmidlist;
static pmDesc *desclist;
pmUnits kbyte_scale;
int pid;
pmAtomValue tmp;
pmAtomValue atom;
int sts;
int i;
if (first) {
memset(&kbyte_scale, 0, sizeof(kbyte_scale));
kbyte_scale.dimSpace = 1;
kbyte_scale.scaleSpace = PM_SPACE_KBYTE;
numpmid = sizeof(metrics) / sizeof(char *);
if ((pmidlist = (pmID *)malloc(numpmid * sizeof(pmidlist[0]))) == NULL) {
fprintf(stderr, "%s: get_sample: malloc: %s\n", pmProgname, osstrerror());
exit(1);
}
if ((desclist = (pmDesc *)malloc(numpmid * sizeof(desclist[0]))) == NULL) {
fprintf(stderr, "%s: get_sample: malloc: %s\n", pmProgname, osstrerror());
exit(1);
}
if ((sts = pmLookupName(numpmid, metrics, pmidlist)) < 0) {
printf("%s: pmLookupName: %s\n", pmProgname, pmErrStr(sts));
for (i = 0; i < numpmid; i++) {
if (pmidlist[i] == PM_ID_NULL)
fprintf(stderr, "%s: metric \"%s\" not in name space\n", pmProgname, metrics[i]);
}
exit(1);
}
for (i = 0; i < numpmid; i++) {
if ((sts = pmLookupDesc(pmidlist[i], &desclist[i])) < 0) {
fprintf(stderr, "%s: cannot retrieve description for metric \"%s\" (PMID: %s)\nReason: %s\n",
pmProgname, metrics[i], pmIDStr(pmidlist[i]), pmErrStr(sts));
exit(1);
}
}
/*
* All metrics we care about share the same instance domain,
* and the instance of interest is _my_ PID
*/
pmDelProfile(desclist[0].indom, 0, NULL); /* all off */
pid = (int)getpid();
pmAddProfile(desclist[0].indom, 1, &pid);
first = 0;
}
/* fetch the current metrics */
if ((sts = pmFetch(numpmid, pmidlist, &rp)) < 0) {
fprintf(stderr, "%s: pmFetch: %s\n", pmProgname, pmErrStr(sts));
exit(1);
}
printf("memory metrics for pid %" FMT_PID " (sizes in Kbytes)\n", pid);
for (i = 0; i < numpmid; i++) {
/* process metrics in turn */
pmExtractValue(rp->vset[i]->valfmt, rp->vset[i]->vlist,
desclist[i].type, &tmp, PM_TYPE_U32);
pmConvScale(PM_TYPE_U32, &tmp, &desclist[i].units,
&atom, &kbyte_scale);
printf("%8d %s\n", atom.l, metrics[i]);
}
}
pmLongOptions longopts[] = {
PMAPI_OPTIONS_HEADER("Options"),
PMOPT_DEBUG,
PMOPT_HELP,
PMAPI_OPTIONS_END
};
pmOptions opts = {
.short_options = "D:?",
.long_options = longopts,
};
int
main(int argc, char **argv)
{
int sts;
char *p;
char *q;
setlinebuf(stdout);
pmGetOptions(argc, argv, &opts);
if (opts.errors || opts.optind < argc - 1) {
pmUsageMessage(&opts);
exit(1);
}
if ((sts = pmNewContext(PM_CONTEXT_HOST, "local:")) < 0) {
fprintf(stderr, "%s: Cannot connect to PMCD on host \"local:\": %s\n",
pmProgname, pmErrStr(sts));
exit(1);
}
get_sample();
#define ARRAY 1*1024*1024
p = (char *)malloc(ARRAY);
for (q = p; q < &p[ARRAY]; q += 1024)
*q = '\0';
printf("\nAfter malloc ...\n");
get_sample();
exit(0);
}
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