/* -*- 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, * 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; }