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/*
* Copyright (c) 2013 Red Hat.
* Copyright (c) 1995-2000,2003 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 "pmcd.h"
#include "config.h"
#if HAVE_STATIC_PROBES
#include "probes.h"
#else
#define PCP_PROBE_PMCD_PDU(type,who,p1,p2)
#define PCP_PROBE_PMCD(type,who,p1,p2)
#endif
/*
* Diagnostic event tracing support
*/
typedef struct {
time_t t_stamp; /* timestamp */
int t_type; /* event type */
int t_who; /* originator or principal identifier */
int t_p1; /* optional event parameters */
int t_p2;
} tracebuf;
static tracebuf *trace;
static unsigned int next;
/*
* by default, circular buffer last 20 events -- change by modify
* pmcd.control.tracebufs
* by default, tracing is disabled -- change by setting the following
* to 1, pmcd.control.traceconn (trace connections) and/or
* pmcd.control.tracepdu (trace PDUs)
*/
PMCD_INTERN int _pmcd_trace_nbufs = 20;
PMCD_INTERN int _pmcd_trace_mask;
void
pmcd_init_trace(int n)
{
if (trace != NULL)
free(trace);
if ((trace = (tracebuf *)malloc(n * sizeof(tracebuf))) == NULL) {
__pmNoMem("pmcd_init_trace", n * sizeof(tracebuf), PM_RECOV_ERR);
return;
}
_pmcd_trace_nbufs = n;
next = 0;
}
void
pmcd_trace(int type, int who, int p1, int p2)
{
int p;
switch (type) {
case TR_XMIT_PDU:
case TR_RECV_PDU:
PCP_PROBE_PMCD_PDU(type, who, p1, p2);
if ((_pmcd_trace_mask & TR_MASK_PDU) == 0)
return;
break;
default:
PCP_PROBE_PMCD(type, who, p1, p2);
if ((_pmcd_trace_mask & TR_MASK_CONN) == 0)
return;
break;
}
if (trace == NULL) {
pmcd_init_trace(_pmcd_trace_nbufs);
if (trace == NULL)
return;
}
p = (next++) % _pmcd_trace_nbufs;
time(&trace[p].t_stamp);
trace[p].t_type = type;
trace[p].t_who = who;
trace[p].t_p1 = p1;
trace[p].t_p2 = p2;
if (_pmcd_trace_mask & TR_MASK_NOBUF)
/* unbuffered, dump it now */
pmcd_dump_trace(stderr);
}
void
pmcd_dump_trace(FILE *f)
{
int i;
int p;
struct tm last = { 0, 0 };
struct tm *this;
char strbuf[20];
if ((_pmcd_trace_mask & TR_MASK_NOBUF) == 0)
fprintf(f, "\n->PMCD event trace: ");
if (trace != NULL && next != 0) {
if (next < _pmcd_trace_nbufs)
i = 0;
else
i = next - _pmcd_trace_nbufs;
if ((_pmcd_trace_mask & TR_MASK_NOBUF) == 0) {
fprintf(f, "starting at %s", ctime(&trace[i % _pmcd_trace_nbufs].t_stamp));
last.tm_hour = -1;
}
else
last.tm_hour = -2;
for ( ; i < next; i++) {
fprintf(f, "->");
p = i % _pmcd_trace_nbufs;
this = localtime(&trace[p].t_stamp);
if (this->tm_hour != last.tm_hour ||
this->tm_min != last.tm_min ||
this->tm_sec != last.tm_sec) {
if (last.tm_hour == -1)
fprintf(f, " ");
else
fprintf(f, "%02d:%02d:%02d ", this->tm_hour, this->tm_min, this->tm_sec);
last = *this; /* struct assignment */
}
else
fprintf(f, " ");
switch (trace[p].t_type) {
case TR_ADD_CLIENT:
{
ClientInfo *cip;
fprintf(f, "New client: [%d] ", trace[p].t_who);
cip = GetClient(trace[p].t_who);
if (cip == NULL) {
fprintf(f, "-- unknown?\n");
}
else {
__pmSockAddr *saddr = (__pmSockAddr *)cip->addr;
char *addrbuf;
addrbuf = __pmSockAddrToString(saddr);
if (addrbuf == NULL)
fprintf(f, "invalid socket address");
else {
fprintf(f, "addr=%s", addrbuf);
free(addrbuf);
}
fprintf(f, ", fd=%d, seq=%u\n", cip->fd, cip->seq);
}
}
break;
case TR_DEL_CLIENT:
fprintf(f, "End client: fd=%d", trace[p].t_who);
if (trace[p].t_p1 != 0)
fprintf(f, ", err=%d: %s", trace[p].t_p1, pmErrStr(trace[p].t_p1));
fputc('\n', f);
break;
case TR_ADD_AGENT:
fprintf(f, "Add PMDA: domain=%d, ", trace[p].t_who);
if (trace[p].t_p1 == -1 && trace[p].t_p2 == -1)
fprintf(f, "DSO\n");
else
fprintf(f, "infd=%d, outfd=%d\n", trace[p].t_p1, trace[p].t_p2);
break;
case TR_DEL_AGENT:
fprintf(f, "Drop PMDA: domain=%d, ", trace[p].t_who);
if (trace[p].t_p1 == -1 && trace[p].t_p2 == -1)
fprintf(f, "DSO\n");
else
fprintf(f, "infd=%d, outfd=%d\n", trace[p].t_p1, trace[p].t_p2);
break;
case TR_EOF:
fprintf(f, "Premature EOF: expecting %s PDU, fd=%d\n",
trace[p].t_p1 == -1 ? "NO" : __pmPDUTypeStr_r(trace[p].t_p1, strbuf, sizeof(strbuf)),
trace[p].t_who);
break;
case TR_WRONG_PDU:
if (trace[p].t_p2 > 0) {
fprintf(f, "Wrong PDU type: expecting %s PDU, fd=%d, got %s PDU\n",
trace[p].t_p1 == -1 ? "NO" : __pmPDUTypeStr_r(trace[p].t_p1, strbuf, sizeof(strbuf)),
trace[p].t_who,
trace[p].t_p2 == -1 ? "NO" : __pmPDUTypeStr_r(trace[p].t_p2, strbuf, sizeof(strbuf)));
}
else if (trace[p].t_p2 == 0) {
fprintf(f, "Wrong PDU type: expecting %s PDU, fd=%d, got EOF\n",
trace[p].t_p1 == -1 ? "NO" : __pmPDUTypeStr_r(trace[p].t_p1, strbuf, sizeof(strbuf)),
trace[p].t_who);
}
else {
fprintf(f, "Wrong PDU type: expecting %s PDU, fd=%d, got err=%d: %s\n",
trace[p].t_p1 == -1 ? "NO" : __pmPDUTypeStr_r(trace[p].t_p1, strbuf, sizeof(strbuf)),
trace[p].t_who,
trace[p].t_p2, pmErrStr(trace[p].t_p2));
}
break;
case TR_XMIT_ERR:
fprintf(f, "Send %s PDU failed: fd=%d, err=%d: %s\n",
__pmPDUTypeStr_r(trace[p].t_p1, strbuf, sizeof(strbuf)), trace[p].t_who,
trace[p].t_p2, pmErrStr(trace[p].t_p2));
break;
case TR_RECV_TIMEOUT:
fprintf(f, "Recv timeout: expecting %s PDU, fd=%d\n",
__pmPDUTypeStr_r(trace[p].t_p1, strbuf, sizeof(strbuf)), trace[p].t_who);
break;
case TR_RECV_ERR:
fprintf(f, "Recv error: expecting %s PDU, fd=%d, err=%d: %s\n",
__pmPDUTypeStr_r(trace[p].t_p1, strbuf, sizeof(strbuf)), trace[p].t_who,
trace[p].t_p2, pmErrStr(trace[p].t_p2));
break;
case TR_XMIT_PDU:
fprintf(f, "Xmit: %s PDU, fd=%d",
__pmPDUTypeStr_r(trace[p].t_p1, strbuf, sizeof(strbuf)), trace[p].t_who);
if (trace[p].t_p1 == PDU_ERROR)
fprintf(f, ", err=%d: %s",
trace[p].t_p2, pmErrStr(trace[p].t_p2));
else if (trace[p].t_p1 == PDU_RESULT)
fprintf(f, ", numpmid=%d", trace[p].t_p2);
else if (trace[p].t_p1 == PDU_TEXT_REQ ||
trace[p].t_p1 == PDU_TEXT)
fprintf(f, ", id=0x%x", trace[p].t_p2);
else if (trace[p].t_p1 == PDU_DESC_REQ ||
trace[p].t_p1 == PDU_DESC)
fprintf(f, ", pmid=%s", pmIDStr_r((pmID)trace[p].t_p2, strbuf, sizeof(strbuf)));
else if (trace[p].t_p1 == PDU_INSTANCE_REQ ||
trace[p].t_p1 == PDU_INSTANCE)
fprintf(f, ", indom=%s", pmInDomStr_r((pmInDom)trace[p].t_p2, strbuf, sizeof(strbuf)));
else if (trace[p].t_p1 == PDU_PMNS_NAMES)
fprintf(f, ", numpmid=%d", trace[p].t_p2);
else if (trace[p].t_p1 == PDU_PMNS_IDS)
fprintf(f, ", numpmid=%d", trace[p].t_p2);
else if (trace[p].t_p1 == PDU_CREDS)
fprintf(f, ", numcreds=%d", trace[p].t_p2);
fputc('\n', f);
break;
case TR_RECV_PDU:
fprintf(f, "Recv: %s PDU, fd=%d, pdubuf=0x",
__pmPDUTypeStr_r(trace[p].t_p1, strbuf, sizeof(strbuf)), trace[p].t_who);
/* This will only work if sizeof (int) == sizeof (ptr).
* On MIPS int is always 32 bits regardless the ABI,
* and on Linux we're checking in configure if an int is
* anything else but 32 bits, so if pointer is not
* 32 bit, then .... */
#ifndef HAVE_32BIT_PTR
fprintf(f, "...");
#endif
fprintf(f, "%x\n", trace[p].t_p2);
break;
default:
fprintf(f, "Type=%d who=%d p1=%d p2=%d\n",
trace[p].t_type, trace[p].t_who, trace[p].t_p1,
trace[p].t_p2);
break;
}
}
}
else
fprintf(f, "<empty>\n");
if ((_pmcd_trace_mask & TR_MASK_NOBUF) == 0)
fputc('\n', f);
next = 0; /* empty the circular buffer */
}
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