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/*
* Copyright (c) 1995 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 "pmda.h"
#include "summary.h"
static void (*freeResultCallback)(pmResult *) = __pmFreeResultValues;
void
mainLoopFreeResultCallback(void (*callback)(pmResult *res))
{
freeResultCallback = callback;
}
void
summaryMainLoop(char *pmdaname, int clientfd, pmdaInterface *dtp)
{
__pmPDU *pb_pmcd;
__pmPDU *pb_client;
int sts;
pmID pmid;
pmDesc desc;
int npmids;
pmID *pmidlist;
pmResult *result;
int ctxnum;
__pmTimeval when;
int ident;
int type;
pmInDom indom;
int inst;
char *name;
__pmInResult *inres;
char *buffer;
__pmProfile *profile;
__pmProfile *saveprofile = NULL;
static fd_set readFds;
int maxfd;
int clientReady, pmcdReady;
int infd, outfd;
if (dtp->comm.pmda_interface != PMDA_INTERFACE_2) {
__pmNotifyErr(LOG_CRIT,
"summaryMainLoop supports PMDA protocol version 2 only, "
"not %d\n", dtp->comm.pmda_interface);
exit(1);
} else {
infd = dtp->version.two.ext->e_infd;
outfd = dtp->version.two.ext->e_outfd;
}
maxfd = infd+1;
if (clientfd >= maxfd)
maxfd = clientfd+1;
for ( ;; ) {
FD_ZERO(&readFds);
FD_SET(infd, &readFds);
FD_SET(clientfd, &readFds);
/* select here : block if nothing to do */
sts = select(maxfd, &readFds, NULL, NULL, NULL);
clientReady = FD_ISSET(clientfd, &readFds);
pmcdReady = FD_ISSET(infd, &readFds);
if (sts < 0)
break;
if (sts == 0)
continue;
if (clientReady) {
/*
* Service the command/client
*/
sts = __pmGetPDU(clientfd, ANY_SIZE, TIMEOUT_NEVER, &pb_client);
if (sts < 0)
__pmNotifyErr(LOG_ERR, "client __pmGetPDU: %s\n", pmErrStr(sts));
if (sts <= 0)
/* End of File or error */
goto done;
service_client(pb_client);
__pmUnpinPDUBuf(pb_client);
}
if (pmcdReady) {
/* service pmcd */
sts = __pmGetPDU(infd, ANY_SIZE, TIMEOUT_NEVER, &pb_pmcd);
if (sts < 0)
__pmNotifyErr(LOG_ERR, "__pmGetPDU: %s\n", pmErrStr(sts));
if (sts <= 0)
/* End of File or error */
goto done;
switch (sts) {
case PDU_PROFILE:
/*
* can ignore ctxnum, since pmcd has already used this to send
* the correct profile, if required
*/
if ((sts = __pmDecodeProfile(pb_pmcd, &ctxnum, &profile)) >= 0)
sts = dtp->version.two.profile(profile,
dtp->version.two.ext);
if (sts < 0)
__pmSendError(outfd, FROM_ANON, sts);
else {
if (saveprofile != NULL)
free(saveprofile);
/*
* need to keep the last valid one around, as the DSO
* routine just remembers the address
*/
saveprofile = profile;
}
break;
case PDU_FETCH:
/*
* can ignore ctxnum, since pmcd has already used this to send
* the correct profile, if required
*/
sts = __pmDecodeFetch(pb_pmcd, &ctxnum, &when, &npmids, &pmidlist);
/* Ignore "when"; pmcd should intercept archive log requests */
if (sts >= 0) {
sts = dtp->version.two.fetch(npmids, pmidlist, &result,
dtp->version.two.ext);
__pmUnpinPDUBuf(pmidlist);
}
if (sts < 0)
__pmSendError(outfd, FROM_ANON, sts);
else {
int st;
st =__pmSendResult(outfd, FROM_ANON, result);
if (st < 0) {
__pmNotifyErr(LOG_ERR,
"Cannot send fetch result: %s\n",
pmErrStr(st));
}
(*freeResultCallback)(result);
}
break;
case PDU_DESC_REQ:
if ((sts = __pmDecodeDescReq(pb_pmcd, &pmid)) >= 0) {
sts = dtp->version.two.desc(pmid, &desc,
dtp->version.two.ext);
}
if (sts < 0)
__pmSendError(outfd, FROM_ANON, sts);
else
__pmSendDesc(outfd, FROM_ANON, &desc);
break;
case PDU_INSTANCE_REQ:
if ((sts = __pmDecodeInstanceReq(pb_pmcd, &when, &indom, &inst, &name)) >= 0) {
/*
* Note: when is ignored.
* If we get this far, we are _only_ dealing
* with current data (pmcd handles the other
* cases).
*/
sts = dtp->version.two.instance(indom, inst, name,
&inres,
dtp->version.two.ext);
}
if (sts < 0)
__pmSendError(outfd, FROM_ANON, sts);
else {
__pmSendInstance(outfd, FROM_ANON, inres);
__pmFreeInResult(inres);
}
break;
case PDU_TEXT_REQ:
if ((sts = __pmDecodeTextReq(pb_pmcd, &ident, &type)) >= 0) {
sts = dtp->version.two.text(ident, type, &buffer,
dtp->version.two.ext);
}
if (sts < 0)
__pmSendError(outfd, FROM_ANON, sts);
else
__pmSendText(outfd, FROM_ANON, ident, buffer);
break;
case PDU_RESULT:
if ((sts = __pmDecodeResult(pb_pmcd, &result)) >= 0)
sts = dtp->version.two.store(result,
dtp->version.two.ext);
__pmSendError(outfd, FROM_ANON, sts);
pmFreeResult(result);
break;
case PDU_ERROR:
/* end of context from PMCD ... we don't care */
break;
default:
fprintf(stderr, "%s: bogus pdu type: 0x%0x?\n", pmdaname, sts);
__pmSendError(outfd, FROM_ANON, PM_ERR_NYI);
break;
}
__pmUnpinPDUBuf(pb_pmcd);
}
}
done:
return;
}
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