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/*----------------------------------------------------------------------------*/
/* Xymon monitor library. */
/* */
/* This is a library module, part of libxymon. */
/* It contains routines for timing program execution. */
/* */
/* Copyright (C) 2002-2011 Henrik Storner <henrik@storner.dk> */
/* */
/* This program is released under the GNU General Public License (GPL), */
/* version 2. See the file "COPYING" for details. */
/* */
/*----------------------------------------------------------------------------*/
static char rcsid[] = "$Id: timing.c 8069 2019-07-23 15:29:06Z jccleaver $";
#include <unistd.h> // For POSIX timer definitions
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <sys/time.h>
#include <stdio.h>
#include "libxymon.h"
int timing = 0;
typedef struct timestamp_t {
char *eventtext;
struct timespec eventtime;
struct timestamp_t *prev;
struct timestamp_t *next;
} timestamp_t;
static timestamp_t *stamphead = NULL;
static timestamp_t *stamptail = NULL;
time_t gettimer(void)
{
int res;
struct timespec t;
#if (_POSIX_TIMERS > 0) && defined(_POSIX_MONOTONIC_CLOCK)
res = clock_gettime(CLOCK_MONOTONIC, &t);
if(-1 == res)
{
res = clock_gettime(CLOCK_REALTIME, &t);
if(-1 == res)
{
return time(NULL);
}
}
return (time_t) t.tv_sec;
#else
return time(NULL);
#endif
}
void getntimer(struct timespec *tp)
{
struct timeval t;
struct timezone tz;
int res;
#if (_POSIX_TIMERS > 0) && defined(_POSIX_MONOTONIC_CLOCK)
res = clock_gettime(CLOCK_MONOTONIC, tp);
if(-1 == res)
{
res = clock_gettime(CLOCK_REALTIME, tp);
if(-1 != res) return;
/* Fall through to use gettimeofday() */
}
#endif
gettimeofday(&t, &tz);
tp->tv_sec = t.tv_sec;
tp->tv_nsec = 1000*t.tv_usec;
}
void add_timestamp(const char *msg)
{
if (timing) {
timestamp_t *newstamp = (timestamp_t *) malloc(sizeof(timestamp_t));
getntimer(&newstamp->eventtime);
newstamp->eventtext = strdup(msg);
if (stamphead == NULL) {
newstamp->next = newstamp->prev = NULL;
stamphead = newstamp;
}
else {
newstamp->prev = stamptail;
newstamp->next = NULL;
stamptail->next = newstamp;
}
stamptail = newstamp;
}
}
int ntimerus(struct timespec *start, struct timespec *now)
{
struct timespec tdiff;
/* See how long the query took */
if (now) {
memcpy(&tdiff, now, sizeof(struct timespec));
}
else {
getntimer(&tdiff);
}
if (tdiff.tv_nsec < start->tv_nsec) {
tdiff.tv_sec--;
tdiff.tv_nsec += 1000000000;
}
tdiff.tv_sec -= start->tv_sec;
tdiff.tv_nsec -= start->tv_nsec;
return (tdiff.tv_sec*1000000 + tdiff.tv_nsec/1000);
}
void show_timestamps(char **buffer)
{
timestamp_t *s;
struct timespec dif;
SBUF_DEFINE(outbuf);
char buf1[80];
if (!timing || (stamphead == NULL)) return;
MEMDEFINE(buf1);
SBUF_MALLOC(outbuf, 4096);
strncpy(outbuf, "\n\nTIME SPENT\n", outbuf_buflen);
strncat(outbuf, "Event ", (outbuf_buflen - strlen(outbuf)));
strncat(outbuf, " Start time", (outbuf_buflen - strlen(outbuf)));
strncat(outbuf, " Duration\n", (outbuf_buflen - strlen(outbuf)));
for (s=stamphead; (s); s=s->next) {
snprintf(buf1, sizeof(buf1), "%-40s ", s->eventtext);
strncat(outbuf, buf1, (outbuf_buflen - strlen(outbuf)));
snprintf(buf1, sizeof(buf1), "%10u.%06u ", (unsigned int)s->eventtime.tv_sec, (unsigned int)s->eventtime.tv_nsec / 1000);
strncat(outbuf, buf1, (outbuf_buflen - strlen(outbuf)));
if (s->prev) {
tvdiff(&((timestamp_t *)s->prev)->eventtime, &s->eventtime, &dif);
snprintf(buf1, sizeof(buf1), "%10u.%06u ", (unsigned int)dif.tv_sec, (unsigned int)dif.tv_nsec / 1000);
strncat(outbuf, buf1, (outbuf_buflen - strlen(outbuf)));
}
else strncat(outbuf, " -", (outbuf_buflen - strlen(outbuf)));
strncat(outbuf, "\n", (outbuf_buflen - strlen(outbuf)));
if ((outbuf_buflen - strlen(outbuf)) < 200) {
SBUF_REALLOC(outbuf, outbuf_buflen + 4096);
}
}
tvdiff(&stamphead->eventtime, &stamptail->eventtime, &dif);
snprintf(buf1, sizeof(buf1), "%-40s ", "TIME TOTAL"); strncat(outbuf, buf1, (outbuf_buflen - strlen(outbuf)));
snprintf(buf1, sizeof(buf1), "%-18s", ""); strncat(outbuf, buf1, (outbuf_buflen - strlen(outbuf)));
snprintf(buf1, sizeof(buf1), "%10u.%06u ", (unsigned int)dif.tv_sec, (unsigned int)dif.tv_nsec / 1000); strncat(outbuf, buf1, (outbuf_buflen - strlen(outbuf)));
strncat(outbuf, "\n", (outbuf_buflen - strlen(outbuf)));
if (buffer == NULL) {
printf("%s", outbuf);
xfree(outbuf);
}
else *buffer = outbuf;
MEMUNDEFINE(buf1);
}
long total_runtime(void)
{
if (timing)
return (stamptail->eventtime.tv_sec - stamphead->eventtime.tv_sec);
else
return 0;
}
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