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/* -*- c-file-style: "java"; indent-tabs-mode: nil; tab-width: 4 fill-column: 78 -*-
*
* distcc -- A simple distributed compiler system
*
* Copyright (C) 2002, 2003 by Martin Pool <mbp@samba.org>
*
* 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.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
* USA
*/
/**
* @file
*
* Keep track of hosts which are, or are not, usable.
**/
#include <config.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <fcntl.h>
#include <errno.h>
#include <time.h>
#include <sys/stat.h>
#include <sys/file.h>
#include "distcc.h"
#include "trace.h"
#include "util.h"
#include "exitcode.h"
#include "snprintf.h"
#include "lock.h"
#include "timefile.h"
#include "hosts.h"
const int dcc_backoff_period = 60; /* seconds */
/**
* Remember that this host is working OK.
*
* For the moment this just means removing any backoff timer scored against
* it.
**/
int dcc_enjoyed_host(const struct dcc_hostdef *host)
{
return dcc_remove_timefile("backoff", host);
}
int dcc_disliked_host(const struct dcc_hostdef *host)
{
/* i hate you (but only for 60 seconds) */
return dcc_mark_timefile("backoff", host);
}
static int dcc_check_backoff(struct dcc_hostdef *host)
{
int ret;
time_t mtime;
if ((ret = dcc_check_timefile("backoff", host, &mtime)))
return ret;
if (difftime(time(NULL), mtime) < (double) dcc_backoff_period) {
rs_trace("still in backoff period for %s", host->hostdef_string);
return EXIT_BUSY;
}
return 0;
}
/**
* Walk through @p hostlist and remove any hosts that are marked unavailable.
**/
int dcc_remove_disliked(struct dcc_hostdef **hostlist)
{
struct dcc_hostdef *h;
while ((h = *hostlist) != NULL) {
if (dcc_check_backoff(h) != 0) {
rs_trace("remove %s from list", h->hostdef_string);
*hostlist = h->next;
free(h);
} else {
/* check next one */
hostlist = &h->next;
}
}
return 0;
}
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