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boinc/client/cs_prefs.C

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// Berkeley Open Infrastructure for Network Computing
// http://boinc.berkeley.edu
// Copyright (C) 2005 University of California
//
// This is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation;
// either version 2.1 of the License, or (at your option) any later version.
//
// This software 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 Lesser General Public License for more details.
//
// To view the GNU Lesser General Public License visit
// http://www.gnu.org/copyleft/lesser.html
// or write to the Free Software Foundation, Inc.,
// 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
// Logic related to general (also known as global) preferences:
// when to compute, how much disk to use, etc.
//
#ifdef _WIN32
#include "boinc_win.h"
#endif
#ifndef _WIN32
#include "config.h"
#if HAVE_SYS_STAT_H
#include <sys/stat.h>
#endif
#if HAVE_SYS_TYPES_H
#include <sys/types.h>
#endif
#endif
#include "str_util.h"
#include "filesys.h"
#include "parse.h"
#include "file_names.h"
#include "cpu_benchmark.h"
#include "client_msgs.h"
#include "client_state.h"
using std::min;
using std::string;
#define MAX_PROJ_PREFS_LEN 65536
// max length of project-specific prefs
// Return the maximum allowed disk usage as determined by user preferences.
// There are three different settings in the prefs;
// return the least of the three.
//
double CLIENT_STATE::allowed_disk_usage() {
double percent_space, min_val;
percent_space = host_info.d_total*global_prefs.disk_max_used_pct/100.0;
min_val = host_info.d_free - global_prefs.disk_min_free_gb*1e9;
double size = min(min(global_prefs.disk_max_used_gb*(1e9), percent_space), min_val);
if (size < 0) size = 0;
return size;
}
int CLIENT_STATE::project_disk_usage(PROJECT* p, double& size) {
char buf[256];
unsigned int i;
double s;
get_project_dir(p, buf, sizeof(buf));
dir_size(buf, size);
for (i=0; i<active_tasks.active_tasks.size(); i++) {
ACTIVE_TASK* atp = active_tasks.active_tasks[i];
if (atp->wup->project != p) continue;
get_slot_dir(atp->slot, buf, sizeof(buf));
dir_size(buf, s);
size += s;
}
return 0;
}
int CLIENT_STATE::total_disk_usage(double& size) {
return dir_size(".", size);
}
#if 0
int CLIENT_STATE::allowed_project_disk_usage(double& size) {
double other_disk_used;
double total_disk_available;
double project_disk_used;
total_disk_usage(other_disk_used);
allowed_disk_usage(total_disk_available);
for(unsigned int i=0; i<projects.size(); i++) {
project_disk_usage(projects[i], project_disk_used);
other_disk_used -= project_disk_used;
}
size = total_disk_available - other_disk_used;
return 0;
}
#endif
// See if (on the basis of user run request and prefs)
// we should suspend activities.
//
void CLIENT_STATE::check_suspend_activities(int& reason) {
reason = 0;
#ifdef __APPLE__
double idletime;
#endif
// Don't work while we're running CPU benchmarks
//
if (are_cpu_benchmarks_running()) {
reason = SUSPEND_REASON_BENCHMARKS;
return;
}
bool old_user_active = user_active;
user_active = !host_info.users_idle(
check_all_logins, global_prefs.idle_time_to_run
#ifdef __APPLE__
, &idletime
#endif
);
if (user_active != old_user_active) {
request_schedule_cpus("Idle state change");
}
#ifdef __APPLE__
// Mac screensaver launches client if not already running. OS X
// quits screensaver when energy saver puts display to sleep, but
// we want to keep crunching. Also, user can start Mac screensaver
// by putting cursor in "hot corner" so idletime may be very small
// initially. If screensaver started client, this code tells client
// to exit when user becomes active, accounting for all these factors.
if (started_by_screensaver && (idletime < 30) &&
(getppid() == 1) ) // true if parent has exited
gstate.requested_exit = true;
#endif
switch(run_mode.get_current()) {
case RUN_MODE_ALWAYS: break;
case RUN_MODE_NEVER:
reason = SUSPEND_REASON_USER_REQ;
return;
default:
if (!global_prefs.run_on_batteries
&& host_info.host_is_running_on_batteries()
) {
reason = SUSPEND_REASON_BATTERIES;
return;
}
if (!global_prefs.run_if_user_active && user_active) {
reason = SUSPEND_REASON_USER_ACTIVE;
return;
}
if (global_prefs.suspended_time_of_day(PREFS_CPU)) {
reason = SUSPEND_REASON_TIME_OF_DAY;
return;
}
}
if (global_prefs.cpu_usage_limit != 100) {
static double last_time=0, debt=0;
if (last_time) {
double diff = now - last_time;
if (diff >= POLL_INTERVAL/2. && diff < POLL_INTERVAL*10.) {
debt += diff*global_prefs.cpu_usage_limit/100;
if (debt < 0) {
reason = SUSPEND_REASON_CPU_USAGE_LIMIT;
} else {
debt -= diff;
}
}
}
last_time = now;
}
}
static string reason_string(int reason) {
string s_reason;
if (reason & SUSPEND_REASON_BATTERIES) {
s_reason += " - on batteries";
}
if (reason & SUSPEND_REASON_USER_ACTIVE) {
s_reason += " - user is active";
}
if (reason & SUSPEND_REASON_USER_REQ) {
s_reason += " - user request";
}
if (reason & SUSPEND_REASON_TIME_OF_DAY) {
s_reason += " - time of day";
}
if (reason & SUSPEND_REASON_BENCHMARKS) {
s_reason += " - running CPU benchmarks";
}
if (reason & SUSPEND_REASON_DISK_SIZE) {
s_reason += " - out of disk space - change global prefs";
}
return s_reason;
}
int CLIENT_STATE::suspend_tasks(int reason) {
if (reason == SUSPEND_REASON_CPU_USAGE_LIMIT) {
if (log_flags.cpu_sched) {
msg_printf(NULL, MSG_INFO, "[cpu_sched] Suspending - CPU throttle");
}
active_tasks.suspend_all(true);
} else {
string s_reason;
s_reason = "Suspending computation" + reason_string(reason);
msg_printf(NULL, MSG_INFO, s_reason.c_str());
active_tasks.suspend_all(global_prefs.leave_apps_in_memory);
}
return 0;
}
int CLIENT_STATE::resume_tasks(int reason) {
if (reason == SUSPEND_REASON_CPU_USAGE_LIMIT) {
if (log_flags.cpu_sched) {
msg_printf(NULL, MSG_INFO, "[cpu_sched] Resuming - CPU throttle");
}
active_tasks.unsuspend_all();
} else {
msg_printf(NULL, MSG_INFO, "Resuming computation");
active_tasks.unsuspend_all();
gstate.request_schedule_cpus("Resuming computation");
}
return 0;
}
void CLIENT_STATE::check_suspend_network(int& reason) {
reason = 0;
switch(network_mode.get_current()) {
case RUN_MODE_ALWAYS: return;
case RUN_MODE_NEVER:
reason |= SUSPEND_REASON_USER_REQ;
return;
}
if (global_prefs.suspended_time_of_day(PREFS_NETWORK)) {
reason |= SUSPEND_REASON_TIME_OF_DAY;
}
return;
}
int CLIENT_STATE::suspend_network(int reason) {
string s_reason;
s_reason = "Suspending network activity" + reason_string(reason);
msg_printf(NULL, MSG_INFO, s_reason.c_str());
pers_file_xfers->suspend();
return 0;
}
int CLIENT_STATE::resume_network() {
msg_printf(NULL, MSG_INFO, "Resuming network activity");
return 0;
}
// call this only after parsing global prefs
//
PROJECT* CLIENT_STATE::global_prefs_source_project() {
return lookup_project(global_prefs.source_project);
}
void CLIENT_STATE::show_global_prefs_source(bool found_venue) {
PROJECT* pp = global_prefs_source_project();
if (pp) {
msg_printf(NULL, MSG_INFO,
"General prefs: from %s (last modified %s)",
pp->get_project_name(), time_to_string(global_prefs.mod_time)
);
} else {
msg_printf(NULL, MSG_INFO,
"General prefs: from %s (last modified %s)",
global_prefs.source_project,
time_to_string(global_prefs.mod_time)
);
}
if (strlen(main_host_venue)) {
msg_printf(NULL, MSG_INFO, "Host location: %s", main_host_venue);
if (found_venue) {
msg_printf(NULL, MSG_INFO,
"General prefs: using separate prefs for %s", main_host_venue
);
} else {
msg_printf(NULL, MSG_INFO,
"General prefs: no separate prefs for %s; using your defaults",
main_host_venue
);
}
} else {
msg_printf(NULL, MSG_INFO, "Host location: none");
msg_printf(NULL, MSG_INFO, "General prefs: using your defaults");
}
}
// parse user's project preferences,
// generating FILE_REF and FILE_INFO objects for each <app_file> element.
//
int PROJECT::parse_preferences_for_user_files() {
char* p, *q, *q2;
char buf[1024];
string timestamp, open_name, url, filename;
FILE_INFO* fip;
FILE_REF fr;
char prefs_buf[MAX_PROJ_PREFS_LEN];
strcpy(prefs_buf, project_specific_prefs.c_str());
p = prefs_buf;
user_files.clear();
while (1) {
q = strstr(p, "<app_file>");
if (!q) break;
q2 = strstr(q, "</app_file>");
if (!q2) break;
*q2 = 0;
strcpy(buf, q);
if (!parse_str(buf, "<timestamp>", timestamp)) break;
if (!parse_str(buf, "<open_name>", open_name)) break;
if (!parse_str(buf, "<url>", url)) break;
filename = open_name + "_" + timestamp;
fip = gstate.lookup_file_info(this, filename.c_str());
if (!fip) {
fip = new FILE_INFO;
fip->project = this;
fip->urls.push_back(url);
strcpy(fip->name, filename.c_str());
fip->is_user_file = true;
gstate.file_infos.push_back(fip);
}
fr.file_info = fip;
strcpy(fr.open_name, open_name.c_str());
user_files.push_back(fr);
p = q2+strlen("</app_file>");
}
return 0;
}
// Get global preferences.
// 1) read the override file to get venue in case it's there
// 2) read the prefs file
// 3) read the override file again
//
void CLIENT_STATE::read_global_prefs() {
bool found_venue;
int retval;
FILE* f;
f = fopen(GLOBAL_PREFS_OVERRIDE_FILE, "r");
if (f) {
string foo;
file_to_str(f, foo);
fclose(f);
parse_str(foo.c_str(), "<host_venue>", main_host_venue, sizeof(main_host_venue));
}
retval = global_prefs.parse_file(
GLOBAL_PREFS_FILE_NAME, main_host_venue, found_venue
);
if (retval) {
msg_printf(NULL, MSG_INFO,
"No general preferences found - using BOINC defaults"
);
} else {
// check that the source project's venue matches main_host_venue.
// If not, read file again.
// This is a fix for cases where main_host_venue is out of synch
//
PROJECT* p = global_prefs_source_project();
if (p && strcmp(main_host_venue, p->host_venue)) {
strcpy(main_host_venue, p->host_venue);
global_prefs.parse_file(GLOBAL_PREFS_FILE_NAME, main_host_venue, found_venue);
}
show_global_prefs_source(found_venue);
}
// read the override file
//
f = fopen(GLOBAL_PREFS_OVERRIDE_FILE, "r");
if (f) {
MIOFILE mf;
GLOBAL_PREFS_MASK mask;
mf.init_file(f);
XML_PARSER xp(&mf);
global_prefs.parse_override(xp, "", found_venue, mask);
msg_printf(NULL, MSG_INFO, "Reading preferences override file");
fclose(f);
}
msg_printf(NULL, MSG_INFO,
"Preferences limit memory usage when active to %.2fMB",
(host_info.m_nbytes*global_prefs.ram_max_used_busy_frac)/MEGA
);
msg_printf(NULL, MSG_INFO,
"Preferences limit memory usage when idle to %.2fMB",
(host_info.m_nbytes*global_prefs.ram_max_used_idle_frac)/MEGA
);
msg_printf(NULL, MSG_INFO,
"Preferences: limit disk usage to %.2fGB",
allowed_disk_usage()/GIGA
);
// max_cpus, bandwidth limits may have changed
//
set_ncpus();
file_xfers->set_bandwidth_limits(true);
file_xfers->set_bandwidth_limits(false);
request_schedule_cpus("Prefs update");
request_work_fetch("Prefs update");
}
int CLIENT_STATE::save_global_prefs(
char* global_prefs_xml, char* master_url, char* scheduler_url
) {
FILE* f = boinc_fopen(GLOBAL_PREFS_FILE_NAME, "w");
if (!f) return ERR_FOPEN;
fprintf(f,
"<global_preferences>\n"
);
// tag with the project and scheduler URL,
// but only if not already tagged
//
if (!strstr(global_prefs_xml, "<source_project>")) {
fprintf(f,
" <source_project>%s</source_project>\n"
" <source_scheduler>%s</source_scheduler>\n",
master_url,
scheduler_url
);
}
fprintf(f,
"%s"
"</global_preferences>\n",
global_prefs_xml
);
fclose(f);
return 0;
}
// amount of RAM usable now
//
double CLIENT_STATE::available_ram() {
if (user_active) {
return host_info.m_nbytes * global_prefs.ram_max_used_busy_frac;
} else {
return host_info.m_nbytes * global_prefs.ram_max_used_idle_frac;
}
}
// max amount that will ever be usable
//
double CLIENT_STATE::max_available_ram() {
return host_info.m_nbytes*std::max(
global_prefs.ram_max_used_busy_frac, global_prefs.ram_max_used_idle_frac
);
}
const char *BOINC_RCSID_92ad99cddf = "$Id$";
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