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/*
* time-accounts.c
*
* Simple profiling according to wall clock time
*
* Copyright © 2016 Deutsches Elektronen-Synchrotron DESY,
* a research centre of the Helmholtz Association.
*
* Authors:
* 2016 Thomas White <taw@physics.org>
*
* This file is part of CrystFEL.
*
* CrystFEL 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 3 of the License, or
* (at your option) any later version.
*
* CrystFEL 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.
*
* You should have received a copy of the GNU General Public License
* along with CrystFEL. If not, see <http://www.gnu.org/licenses/>.
*
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <time.h>
#include <assert.h>
#include "time-accounts.h"
#define MAX_ACCOUNTS 256
#ifndef CLOCK_MONOTONIC_RAW
#define CLOCK_MONOTONIC_RAW (CLOCK_MONOTONIC)
#endif
struct _timeaccounts
{
enum timeaccount accs[MAX_ACCOUNTS];
time_t sec[MAX_ACCOUNTS];
long nsec[MAX_ACCOUNTS];
int n_accs;
enum timeaccount cur_acc;
time_t cur_sec;
long cur_nsec;
};
TimeAccounts *time_accounts_init()
{
TimeAccounts *accs = malloc(sizeof(struct _timeaccounts));
if ( accs == NULL ) return NULL;
accs->n_accs = 0;
accs->cur_acc = TACC_NOTHING;
return accs;
}
void time_accounts_free(TimeAccounts *accs)
{
free(accs);
}
static int find_account(TimeAccounts *accs, enum timeaccount acc)
{
int i;
static int warned_toomany = 0;
for ( i=0; i<accs->n_accs; i++ ) {
if ( accs->accs[i] == acc ) return i;
}
if ( i == MAX_ACCOUNTS ) {
if ( !warned_toomany ) printf("Too many time accounts used!\n");
warned_toomany = 1;
return MAX_ACCOUNTS;
}
/* This is the first time the account is used */
accs->accs[i] = acc;
accs->sec[i] = 0;
accs->nsec[i] = 0;
accs->n_accs++;
return i;
}
#ifdef HAVE_CLOCK_GETTIME
void time_accounts_set(TimeAccounts *accs, enum timeaccount new_acc)
{
struct timespec tp;
if ( accs == NULL ) return;
clock_gettime(CLOCK_MONOTONIC_RAW, &tp);
/* Record time used on the previous account */
if ( accs->cur_acc != TACC_NOTHING ) {
int i = find_account(accs, accs->cur_acc);
if ( i == MAX_ACCOUNTS ) {
printf("Too many time accounts!\n");
} else {
time_t sec = tp.tv_sec - accs->cur_sec;
long nsec = tp.tv_nsec - accs->cur_nsec;
if ( nsec < 0 ) {
sec -= 1;
nsec += 1000000000;
}
accs->sec[i] += sec;
accs->nsec[i] += nsec;
while ( accs->nsec[i] > 1000000000 ) {
accs->sec[i] += 1;
accs->nsec[i] -= 1000000000;
}
}
}
accs->cur_acc = new_acc;
accs->cur_sec = tp.tv_sec;
accs->cur_nsec = tp.tv_nsec;
}
#else
void time_accounts_set(TimeAccounts *accs, enum timeaccount new_acc)
{
if ( accs == NULL ) return;
/* Record time used on the previous account */
if ( accs->cur_acc != TACC_NOTHING ) {
int i = find_account(accs, accs->cur_acc);
if ( i == MAX_ACCOUNTS ) {
printf("Too many time accounts!\n");
} else {
/* Do nothing because we have no timer */
}
}
accs->cur_acc = new_acc;
accs->cur_sec = 0;
accs->cur_nsec = 0;
}
#endif
static const char *taccname(enum timeaccount acc)
{
switch ( acc ) {
case TACC_NOTHING : return "Nothing";
case TACC_SELECT : return "select()";
case TACC_STREAMREAD : return "Stream read";
case TACC_SIGNALS : return "Checking signals";
case TACC_QUEUETOPUP : return "Topping up queue";
case TACC_STATUS : return "Printing status";
case TACC_ENDCHECK : return "Checking end";
case TACC_WAKEUP : return "Waking up workers";
case TACC_WAITPID : return "Waiting on workers";
case TACC_HDF5OPEN : return "Opening HDF5 file";
case TACC_HDF5READ : return "Reading HDF5 file";
case TACC_FILTER : return "Image filters";
case TACC_RESRANGE : return "Resolution range";
case TACC_PEAKSEARCH : return "Peak search";
case TACC_INDEXING : return "Indexing";
case TACC_PREDPARAMS : return "Prediction parameters";
case TACC_INTEGRATION : return "Integration";
case TACC_TOTALS : return "Crystal totals";
case TACC_WRITESTREAM : return "Writing stream";
case TACC_CLEANUP : return "Image cleanup";
case TACC_EVENTWAIT : return "Waiting for event";
case TACC_FINALCLEANUP : return "Final cleanup";
default : return "Unknown";
}
}
void time_accounts_print(TimeAccounts *accs)
{
int i;
printf("Wall clock time budget:\n");
printf("-----------------------\n");
for ( i=0; i<accs->n_accs; i++ ) {
printf("%25s: %10lli sec %10li nsec\n", taccname(accs->accs[i]),
(long long)accs->sec[i], accs->nsec[i]);
}
}
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