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boinc/client/app.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
// Abstraction of a set of executing applications,
// connected to I/O files in various ways.
// Shouldn't depend on CLIENT_STATE.
#include "cpp.h"
#ifdef _WIN32
#include "boinc_win.h"
#else
#include "config.h"
#endif
#ifndef _WIN32
#if HAVE_UNISTD_H
#include <unistd.h>
#endif
#if HAVE_SYS_WAIT_H
#include <sys/wait.h>
#endif
#if HAVE_SYS_TIME_H
#include <sys/time.h>
#endif
#if HAVE_SYS_RESOURCE_H
#include <sys/resource.h>
#endif
#if HAVE_SYS_TYPES_H
#include <sys/types.h>
#endif
#if HAVE_FCNTL_H
#include <fcntl.h>
#endif
#include <cctype>
#include <ctime>
#include <cstdio>
#include <cmath>
#include <cstdlib>
#endif
#include "client_state.h"
#include "client_types.h"
#include "error_numbers.h"
#include "filesys.h"
#include "file_names.h"
#include "parse.h"
#include "shmem.h"
#include "util.h"
#include "client_msgs.h"
#include "app.h"
using std::max;
using std::min;
ACTIVE_TASK::ACTIVE_TASK() {
result = NULL;
wup = NULL;
app_version = NULL;
pid = 0;
slot = 0;
task_state = PROCESS_UNINITIALIZED;
scheduler_state = CPU_SCHED_UNINITIALIZED;
signal = 0;
strcpy(slot_dir, "");
is_ss_app = false;
graphics_mode_acked = MODE_UNSUPPORTED;
graphics_mode_before_ss = MODE_HIDE_GRAPHICS;
graphics_mode_ack_timeout = 0;
exit_requested = false;
fraction_done = 0;
episode_start_cpu_time = 0;
episode_start_wall_time = gstate.now;
cpu_time_at_last_sched = 0;
checkpoint_cpu_time = 0;
checkpoint_wall_time = 0;
current_cpu_time = 0;
vm_bytes = 0;
rss_bytes = 0;
have_trickle_down = false;
send_upload_file_status = false;
pending_suspend_via_quit = false;
want_network = 0;
#ifdef _WIN32
pid_handle = 0;
thread_handle = 0;
shm_handle = 0;
#endif
}
#ifdef _WIN32
// call this when a process has existed but will be started again
// (e.g. suspend via quit, exited but no finish file).
// In these cases we want to keep the shmem and events
//
void ACTIVE_TASK::close_process_handles() {
if (pid_handle) {
CloseHandle(pid_handle);
pid_handle = NULL;
}
if (thread_handle) {
CloseHandle(thread_handle);
thread_handle = NULL;
}
}
#endif
// call this when a process has exited and we're not going to restart it
//
void ACTIVE_TASK::cleanup_task() {
#ifdef _WIN32
close_process_handles();
// detach from shared mem.
// This will destroy shmem seg since we're the last attachment
//
if (app_client_shm.shm) {
detach_shmem(shm_handle, app_client_shm.shm);
app_client_shm.shm = NULL;
}
#else
int retval;
if (app_client_shm.shm) {
retval = detach_shmem(app_client_shm.shm);
if (retval) {
msg_printf(NULL, MSG_ERROR,
"Couldn't detach shared memory: %s", boincerror(retval)
);
}
retval = destroy_shmem(shmem_seg_name);
if (retval) {
msg_printf(NULL, MSG_ERROR,
"Couldn't destroy shared memory: %s", boincerror(retval)
);
}
app_client_shm.shm = NULL;
}
#endif
}
ACTIVE_TASK::~ACTIVE_TASK() {
cleanup_task();
}
int ACTIVE_TASK::init(RESULT* rp) {
result = rp;
wup = rp->wup;
app_version = wup->avp;
max_cpu_time = rp->wup->rsc_fpops_bound/gstate.host_info.p_fpops;
max_disk_usage = rp->wup->rsc_disk_bound;
max_mem_usage = rp->wup->rsc_memory_bound;
strcpy(process_control_queue.name, rp->name);
strcpy(graphics_request_queue.name, rp->name);
get_slot_dir(slot, slot_dir);
return 0;
}
#if 0
// Deallocate memory to prevent unneeded reporting of memory leaks
//
void ACTIVE_TASK_SET::free_mem() {
vector<ACTIVE_TASK*>::iterator at_iter;
ACTIVE_TASK *at;
at_iter = active_tasks.begin();
while (at_iter != active_tasks.end()) {
at = active_tasks[0];
at_iter = active_tasks.erase(at_iter);
delete at;
}
}
#endif
// Do periodic checks on running apps:
// - get latest CPU time and % done info
// - check if any has exited, and clean up
// - see if any has exceeded its CPU or disk space limits, and abort it
//
bool ACTIVE_TASK_SET::poll() {
bool action;
static double last_time = 0;
if (gstate.now - last_time < 1.0) return false;
last_time = gstate.now;
action = check_app_exited();
send_heartbeats();
send_trickle_downs();
graphics_poll();
process_control_poll();
action |= check_rsc_limits_exceeded();
action |= get_msgs();
for (unsigned int i=0; i<active_tasks.size(); i++) {
ACTIVE_TASK* atp = active_tasks[i];
if (atp->task_state == PROCESS_ABORT_PENDING) {
if (gstate.now > atp->abort_time + 5.0) {
atp->kill_task();
}
}
}
if (action) {
gstate.set_client_state_dirty("ACTIVE_TASK_SET::poll");
}
return action;
}
// Remove an ACTIVE_TASK from the set.
// Does NOT delete the ACTIVE_TASK object.
//
int ACTIVE_TASK_SET::remove(ACTIVE_TASK* atp) {
vector<ACTIVE_TASK*>::iterator iter;
iter = active_tasks.begin();
while (iter != active_tasks.end()) {
if (*iter == atp) {
active_tasks.erase(iter);
return 0;
}
iter++;
}
msg_printf(NULL, MSG_ERROR, "Task %s not found", atp->result->name);
return ERR_NOT_FOUND;
}
// There's a new trickle file.
// Move it from slot dir to project dir
//
int ACTIVE_TASK::move_trickle_file() {
char project_dir[256], new_path[256], old_path[256];
int retval;
get_project_dir(result->project, project_dir);
sprintf(old_path, "%s/trickle_up.xml", slot_dir);
sprintf(new_path,
"%s/trickle_up_%s_%d.xml",
project_dir, result->name, (int)time(0)
);
retval = boinc_rename(old_path, new_path);
// if can't move it, remove
//
if (retval) {
boinc_delete_file(old_path);
return ERR_RENAME;
}
return 0;
}
// Returns the estimated CPU time to completion (in seconds) of this task.
// Compute this as a weighted average of estimates based on
// 1) the workunit's flops count
// 2) the current reported CPU time and fraction done
//
double ACTIVE_TASK::est_cpu_time_to_completion() {
if (fraction_done >= 1) return 0;
double wu_est = result->estimated_cpu_time();
if (fraction_done <= 0) return wu_est;
double frac_est = (current_cpu_time / fraction_done) - current_cpu_time;
double fraction_left = 1-fraction_done;
return fraction_done*frac_est + fraction_left*fraction_left*wu_est;
}
// size of output files and files in slot dir
//
int ACTIVE_TASK::current_disk_usage(double& size) {
double x;
unsigned int i;
int retval;
FILE_INFO* fip;
char path[256];
retval = dir_size(slot_dir, size);
if (retval) return retval;
for (i=0; i<result->output_files.size(); i++) {
fip = result->output_files[i].file_info;
get_pathname(fip, path);
retval = file_size(path, x);
if (!retval) size += x;
}
return 0;
}
// Get the next free slot
//
int ACTIVE_TASK_SET::get_free_slot() {
unsigned int i;
int j;
bool found;
for (j=0; ; j++) {
found = false;
for (i=0; i<active_tasks.size(); i++) {
if (active_tasks[i]->slot == j) {
found = true;
break;
}
}
if (!found) return j;
}
return ERR_NOT_FOUND; // probably never get here
}
bool ACTIVE_TASK_SET::slot_taken(int slot) {
unsigned int i;
for (i=0; i<active_tasks.size(); i++) {
if (active_tasks[i]->slot == slot) return true;
}
return false;
}
int ACTIVE_TASK::write(MIOFILE& fout) {
fout.printf(
"<active_task>\n"
" <project_master_url>%s</project_master_url>\n"
" <result_name>%s</result_name>\n"
" <active_task_state>%d</active_task_state>\n"
" <app_version_num>%d</app_version_num>\n"
" <slot>%d</slot>\n"
" <scheduler_state>%d</scheduler_state>\n"
" <checkpoint_cpu_time>%f</checkpoint_cpu_time>\n"
" <fraction_done>%f</fraction_done>\n"
" <current_cpu_time>%f</current_cpu_time>\n"
" <vm_bytes>%f</vm_bytes>\n"
" <rss_bytes>%f</rss_bytes>\n",
result->project->master_url,
result->name,
task_state,
app_version->version_num,
slot,
scheduler_state,
checkpoint_cpu_time,
fraction_done,
current_cpu_time,
vm_bytes,
rss_bytes
);
if (supports_graphics() && !gstate.disable_graphics) {
fout.printf(
" <supports_graphics/>\n"
" <graphics_mode_acked>%d</graphics_mode_acked>\n",
graphics_mode_acked
);
}
fout.printf("</active_task>\n");
return 0;
}
int ACTIVE_TASK::parse(MIOFILE& fin) {
char buf[256], result_name[256], project_master_url[256];
int app_version_num=0, n;
double x;
unsigned int i;
PROJECT* project;
strcpy(result_name, "");
strcpy(project_master_url, "");
while (fin.fgets(buf, 256)) {
if (match_tag(buf, "</active_task>")) {
project = gstate.lookup_project(project_master_url);
if (!project) {
msg_printf(
NULL, MSG_ERROR,
"State file error: project %s not found\n",
project_master_url
);
return ERR_NULL;
}
result = gstate.lookup_result(project, result_name);
if (!result) {
msg_printf(
project, MSG_ERROR,
"State file error: result %s not found\n",
result_name
);
return ERR_NULL;
}
// various sanity checks
//
if (result->got_server_ack
|| result->ready_to_report
|| result->state != RESULT_FILES_DOWNLOADED
) {
msg_printf(project, MSG_ERROR,
"State file error: result %s is in wrong state\n",
result_name
);
return ERR_BAD_RESULT_STATE;
}
wup = result->wup;
app_version = gstate.lookup_app_version(
result->app, app_version_num
);
if (!app_version) {
msg_printf(
project, MSG_ERROR,
"State file error: application %s version %d not found\n",
result->app->name, app_version_num
);
return ERR_NULL;
}
// make sure no two active tasks are in same slot
//
for (i=0; i<gstate.active_tasks.active_tasks.size(); i++) {
ACTIVE_TASK* atp = gstate.active_tasks.active_tasks[i];
if (atp->slot == slot) {
msg_printf(project, MSG_ERROR,
"State file error: two tasks in slot %d\n", slot
);
return ERR_BAD_RESULT_STATE;
}
}
return 0;
}
else if (parse_str(buf, "<result_name>", result_name, sizeof(result_name))) continue;
else if (parse_str(buf, "<project_master_url>", project_master_url, sizeof(project_master_url))) continue;
else if (parse_int(buf, "<app_version_num>", app_version_num)) continue;
else if (parse_int(buf, "<slot>", slot)) continue;
else if (parse_double(buf, "<checkpoint_cpu_time>", checkpoint_cpu_time)) continue;
else if (parse_double(buf, "<fraction_done>", fraction_done)) continue;
else if (parse_double(buf, "<current_cpu_time>", current_cpu_time)) continue;
else if (parse_int(buf, "<active_task_state>", n)) continue;
else if (parse_double(buf, "<vm_bytes>", x)) continue;
else if (parse_double(buf, "<rss_bytes>", x)) continue;
else if (match_tag(buf, "<supports_graphics/>")) continue;
else if (parse_int(buf, "<graphics_mode_acked>", n)) continue;
else if (parse_int(buf, "<scheduler_state>", n)) continue;
else {
if (log_flags.unparsed_xml) {
msg_printf(0, MSG_ERROR,
"ACTIVE_TASK::parse(): unrecognized %s\n", buf
);
}
}
}
return ERR_XML_PARSE;
}
// Write XML information about this active task set
//
int ACTIVE_TASK_SET::write(MIOFILE& fout) {
unsigned int i;
int retval;
fout.printf("<active_task_set>\n");
for (i=0; i<active_tasks.size(); i++) {
retval = active_tasks[i]->write(fout);
if (retval) return retval;
}
fout.printf("</active_task_set>\n");
return 0;
}
// Parse XML information about an active task set
//
int ACTIVE_TASK_SET::parse(MIOFILE& fin) {
ACTIVE_TASK* atp;
char buf[256];
int retval;
while (fin.fgets(buf, 256)) {
if (match_tag(buf, "</active_task_set>")) return 0;
else if (match_tag(buf, "<active_task>")) {
atp = new ACTIVE_TASK;
retval = atp->parse(fin);
if (!retval) {
if (slot_taken(atp->slot)) {
msg_printf(atp->result->project, MSG_ERROR,
"slot %d in use; discarding result %s",
atp->slot, atp->result->name
);
retval = ERR_XML_PARSE;
}
}
if (!retval) active_tasks.push_back(atp);
else delete atp;
} else {
if (log_flags.unparsed_xml) {
msg_printf(0, MSG_ERROR,
"ACTIVE_TASK_SET::parse(): unrecognized %s\n", buf
);
}
}
}
return ERR_XML_PARSE;
}
void MSG_QUEUE::msg_queue_send(const char* msg, MSG_CHANNEL& channel) {
if (channel.send_msg(msg)) {
//msg_printf(NULL, MSG_INFO, "sent %s to %s", msg, name);
return;
}
msgs.push_back(std::string(msg));
}
void MSG_QUEUE::msg_queue_poll(MSG_CHANNEL& channel) {
if (msgs.size() > 0) {
if (channel.send_msg(msgs[0].c_str())) {
//msg_printf(NULL, MSG_INFO, "sent %s to %s (delayed)", (msgs[0].c_str()), name);
msgs.erase(msgs.begin());
}
}
}
void ACTIVE_TASK_SET::report_overdue() {
unsigned int i;
ACTIVE_TASK* atp;
for (i=0; i<active_tasks.size(); i++) {
atp = active_tasks[i];
double diff = (gstate.now - atp->result->report_deadline)/86400;
if (diff > 0) {
msg_printf(atp->result->project, MSG_ERROR,
"Task %s is %.2f days overdue.", atp->result->name, diff
);
msg_printf(atp->result->project, MSG_ERROR,
"You may not get credit for it. Consider aborting it."
);
}
}
}
// scan the slot directory, looking for files with names
// of the form boinc_ufr_X.
// Then mark file X as being present (and uploadable)
//
int ACTIVE_TASK::handle_upload_files() {
std::string filename;
char buf[256], path[256];
int retval;
DirScanner dirscan(slot_dir);
while (dirscan.scan(filename)) {
strcpy(buf, filename.c_str());
if (strstr(buf, UPLOAD_FILE_REQ_PREFIX) == buf) {
char* p = buf+strlen(UPLOAD_FILE_REQ_PREFIX);
FILE_INFO* fip = result->lookup_file_logical(p);
if (fip) {
get_pathname(fip, path);
retval = md5_file(path, fip->md5_cksum, fip->nbytes);
if (retval) {
fip->status = retval;
} else {
fip->status = FILE_PRESENT;
}
} else {
msg_printf(0, MSG_ERROR, "Can't find uploadable file %s", p);
}
sprintf(path, "%s/%s", slot_dir, buf);
boinc_delete_file(path);
}
}
return 0;
}
void ACTIVE_TASK_SET::handle_upload_files() {
for (unsigned int i=0; i<active_tasks.size(); i++) {
ACTIVE_TASK* atp = active_tasks[i];
atp->handle_upload_files();
}
}
bool ACTIVE_TASK_SET::want_network() {
for (unsigned int i=0; i<active_tasks.size(); i++) {
ACTIVE_TASK* atp = active_tasks[i];
if (atp->want_network) return true;
}
return false;
}
void ACTIVE_TASK_SET::network_available() {
for (unsigned int i=0; i<active_tasks.size(); i++) {
ACTIVE_TASK* atp = active_tasks[i];
if (atp->want_network) {
atp->send_network_available();
}
}
}
void ACTIVE_TASK::upload_notify_app(const FILE_INFO* fip, const FILE_REF* frp) {
char path[256];
sprintf(path, "%s/%s%s", slot_dir, UPLOAD_FILE_STATUS_PREFIX, frp->open_name);
FILE* f = boinc_fopen(path, "w");
if (!f) return;
fprintf(f, "<status>%d</status>\n", fip->status);
fclose(f);
send_upload_file_status = true;
}
// a file upload has finished.
// If any running apps are waiting for it, notify them
//
void ACTIVE_TASK_SET::upload_notify_app(FILE_INFO* fip) {
for (unsigned int i=0; i<active_tasks.size(); i++) {
ACTIVE_TASK* atp = active_tasks[i];
RESULT* rp = atp->result;
FILE_REF* frp = rp->lookup_file(fip);
if (frp) {
atp->upload_notify_app(fip, frp);
}
}
}
void ACTIVE_TASK_SET::init() {
for (unsigned int i=0; i<active_tasks.size(); i++) {
ACTIVE_TASK* atp = active_tasks[i];
atp->init(atp->result);
atp->scheduler_state = CPU_SCHED_PREEMPTED;
}
}
const char *BOINC_RCSID_778b61195e = "$Id$";
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