mirror of https://github.com/BOINC/boinc.git
99 lines
2.9 KiB
C
99 lines
2.9 KiB
C
// The contents of this file are subject to the BOINC Public License
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// Version 1.0 (the "License"); you may not use this file except in
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// compliance with the License. You may obtain a copy of the License at
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// http://boinc.berkeley.edu/license_1.0.txt
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//
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// Software distributed under the License is distributed on an "AS IS"
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// basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
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// License for the specific language governing rights and limitations
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// under the License.
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//
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// The Original Code is the Berkeley Open Infrastructure for Network Computing.
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//
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// The Initial Developer of the Original Code is the SETI@home project.
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// Portions created by the SETI@home project are Copyright (C) 2002
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// University of California at Berkeley. All Rights Reserved.
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//
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// Contributor(s):
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//
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using namespace std;
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#include <strings.h>
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#include <csignal>
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#include <cstdarg>
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#include <unistd.h>
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#include "parse.h"
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#include "util.h"
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#include "main.h"
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#include "sched_util.h"
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#include "server_types.h"
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const char* STOP_TRIGGER_FILENAME = "../stop_server";
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void write_pid_file(const char* filename) {
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FILE* fpid = fopen(filename, "w");
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if (!fpid) {
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log_messages.printf(SchedMessages::NORMAL, "Couldn't write pid\n");
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return;
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}
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fprintf(fpid, "%d\n", (int)getpid());
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fclose(fpid);
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}
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// sig_int will be set to true if SIGINT is caught.
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bool sig_int = false;
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static void sigint_handler(int) {
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fprintf(stderr, "SIGINT\n");
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sig_int = true;
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}
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void install_sigint_handler() {
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signal(SIGINT, sigint_handler);
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// SIGINT is now default again so hitting ^C again will kill the program.
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}
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void check_stop_trigger() {
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if (sig_int) {
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log_messages.printf(SchedMessages::CRITICAL, "Quitting due to SIGINT\n");
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exit(0);
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}
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FILE* f = fopen(STOP_TRIGGER_FILENAME, "r");
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if (f) {
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log_messages.printf(SchedMessages::NORMAL, "Quitting due to stop trigger\n");
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exit(0);
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}
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}
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// decay an exponential average of credit per day,
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// and possibly add an increment for new credit
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//
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void update_average(
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double credit_assigned_time, // when work was started for new credit
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// (or zero if no new credit)
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double credit, // amount of new credit
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double& avg, // average credit per day (in and out)
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double& avg_time // when average was last computed
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) {
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time_t now = time(0);
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// decrease existing average according to how long it's been
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// since it was computed
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//
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if (avg_time) {
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double deltat = now - avg_time;
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avg *= exp(-deltat*LOG2/AVG_HALF_LIFE);
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}
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if (credit_assigned_time) {
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double deltat = now - credit_assigned_time;
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// Add (credit)/(number of days to return result) to credit,
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// which is the average number of cobblestones per day
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//
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avg += credit/(deltat/SECONDS_IN_DAY);
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}
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avg_time = now;
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}
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