/var/lib/pcp/testsuite/src/agenttimeout.c is in pcp-testsuite 3.9.10.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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* Copyright (c) 1997-2001 Silicon Graphics, Inc. All Rights Reserved.
*/
#include <sys/types.h>
#include <time.h>
#include <stdio.h>
#include <pcp/pmapi.h>
#include <pcp/impl.h>
int
main(int argc, char *argv[])
{
int c;
int timeout;
int domain;
char *endPtr;
time_t tBegin, tEnd;
char *name;
pmID timeoutPmid;
pmResult *result;
pmID pmid;
int sts;
unsigned pmcdTimeout;
unsigned oldTimeout;
pmValueSet *vsp;
__pmID_int *pip;
int tElapsed;
int tMax;
int errflag = 0;
__pmSetProgname(pmProgname);
while ((c = getopt(argc, argv, "D:?")) != EOF) {
switch (c) {
case 'D': /* debug flag */
sts = __pmParseDebug(optarg);
if (sts < 0) {
fprintf(stderr, "%s: unrecognized debug flag specification (%s)\n",
pmProgname, optarg);
errflag++;
}
else
pmDebug |= sts;
break;
case '?':
default:
errflag++;
break;
}
}
/* non-flag args are argv[optind] ... argv[argc-1] */
argc -= optind-1;
argv += optind-1;
if (errflag || argc != 3) {
fprintf(stderr, "Usage: agenttimeout domain timeout\n");
exit(1);
}
domain = strtol(argv[1], &endPtr, 0);
if (*endPtr != '\0' || domain < 0 || domain >= 255) {
fprintf(stderr, "domain '%s' is not a valid pmID domain identifier\n", argv[1]);
exit(1);
}
timeout = strtol(argv[2], &endPtr, 0);
if (*endPtr != '\0' || timeout < 0) {
fprintf(stderr, "timeout '%s' is not valid\n", argv[2]);
exit(1);
}
printf("Agent timeout test, domain = %d, timeout = %d\n", domain, timeout);
if ((sts = pmLoadNameSpace(PM_NS_DEFAULT)) < 0) {
fprintf(stderr, "pmLoadNameSpace: %s\n", pmErrStr(sts));
exit(1);
}
if ((sts = pmNewContext(PM_CONTEXT_HOST, "localhost")) < 0) {
fprintf(stderr, "pmNewContext(..., \"localhost\"): %s\n",
pmErrStr(sts));
exit(1);
}
name = "pmcd.control.timeout";
if ((sts = pmLookupName(1, &name, &timeoutPmid)) < 0) {
fprintf(stderr, "pmLookupName(%s): %s\n", name, pmErrStr(sts));
exit(1);
}
/* fetch pmcd.control.timeout and make sure the result is OK */
if ((sts = pmFetch(1, &timeoutPmid, &result)) < 0) {
fprintf(stderr, "pmFetch(pmcd.control.timeout): %s\n", pmErrStr(sts));
exit(1);
}
if (result->numpmid != 1) {
fprintf(stderr, "pmFetch(pmcd.control.timeout): %d values fetched!\n", result->numpmid);
exit(1);
}
vsp = result->vset[0];
if (vsp->pmid != timeoutPmid || vsp->numval != 1) {
fprintf(stderr, "pmFetch(pmcd.control.timeout): bad pmID or numval in result\n");
exit(1);
}
oldTimeout = vsp->vlist[0].value.lval;
/* Now store the new value then fetch it back to check */
vsp->vlist[0].value.lval = timeout;
if ((sts = pmStore(result)) < 0) {
fprintf(stderr, "pmStore(pmcd.control.timeout): %s\n", pmErrStr(sts));
exit(1);
}
if ((sts = pmFetch(1, &timeoutPmid, &result)) < 0) {
fprintf(stderr, "#2 pmFetch(pmcd.control.timeout): %s\n", pmErrStr(sts));
exit(1);
}
if (result->numpmid != 1) {
fprintf(stderr, "#2 pmFetch(pmcd.control.timeout): %d values fetched!\n", result->numpmid);
exit(1);
}
vsp = result->vset[0];
if (vsp->pmid != timeoutPmid || vsp->numval != 1) {
fprintf(stderr, "#2 pmFetch(pmcd.control.timeout): bad pmID or numval in result\n");
exit(1);
}
if (vsp->vlist[0].value.lval != timeout) {
fprintf(stderr, "pmcd timeout update failed, old = %d, new = %d, returned = %d\n",
oldTimeout, timeout, vsp->vlist[0].value.lval);
exit(1);
}
pmcdTimeout = vsp->vlist[0].value.lval;
pmFreeResult(result);
printf(" timeout is now %d seconds\n", pmcdTimeout);
pip = (__pmID_int *)&pmid;
pip->domain = domain;
pip->cluster = 0;
pip->item = 0;
tBegin = time((time_t *)0);
if ((sts = pmFetch(1, &pmid, &result)) < 0) {
fprintf(stderr, "fetch error = %s\n", pmErrStr(sts));
exit(1);
}
vsp = result->vset[0];
if (vsp->numval != PM_ERR_TIMEOUT)
fprintf(stderr, "Timeout fetch didn't time out\n");
pmFreeResult(result);
tEnd = time((time_t *)0);
#ifdef DESPERATE
printf(" %d seconds for fetch\n", tEnd - tBegin);
#endif
tElapsed = tEnd - tBegin;
/* The way pmcd timeouts work, the time before an agent is timed-out
* varies between the timeout and 2 * timeout. It's actually even more
* complicated to calculate the maximum timeout interval if the timeout is
* changed, since the timeout sproc continually reschedules itself
* asynchronously. There are two extrema:
* . If the (old) timeout had just gone off and has been requeued for
* the old interval just prior to the change being made.
* . If the old timeout is just about to go off but the change gets
* made first
*/
if (pmcdTimeout <= oldTimeout)
tMax = oldTimeout + pmcdTimeout;
else
tMax = 2 * pmcdTimeout;
if (tElapsed < pmcdTimeout)
fprintf(stderr, "Fetch timed out prematurely: elapsed = %d\n", tElapsed);
else if (tElapsed > tMax + 2) /* Allow 2 second's delay in processing */
fprintf(stderr, "Fetch took too long to time out: %d\n", tElapsed);
exit(0);
}
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