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// The contents of this file are subject to the Mozilla Public License
// Version 1.0 (the "License"); you may not use this file except in
// compliance with the License. You may obtain a copy of the License at
// http://www.mozilla.org/MPL/
//
// Software distributed under the License is distributed on an "AS IS"
// basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
// License for the specific language governing rights and limitations
// under the License.
//
// The Original Code is the Berkeley Open Infrastructure for Network Computing.
//
// The Initial Developer of the Original Code is the SETI@home project.
// Portions created by the SETI@home project are Copyright (C) 2002
// University of California at Berkeley. All Rights Reserved.
//
// Contributor(s):
//
// Abstraction of a set of executing applications,
// connected to I/O files in various ways.
// Shouldn't depend on CLIENT_STATE.
#include "windows_cpp.h"
#include "error_numbers.h"
#ifdef _WIN32
#include <io.h>
#include <windows.h>
#endif
#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_SYS_SIGNAL_H
#include <sys/signal.h>
#endif
#if HAVE_FCNTL_H
#include <fcntl.h>
#endif
#if HAVE_SIGNAL_H
#include <signal.h>
#endif
#include <ctype.h>
#include <time.h>
#include <stdio.h>
#include <stdlib.h>
#include "client_state.h"
#include "client_types.h"
#include "filesys.h"
#include "file_names.h"
#include "log_flags.h"
#include "parse.h"
#include "util.h"
#include "app.h"
#include "api.h"
extern void write_core_file(FILE *f, APP_IN& ai);
extern void write_init_file(FILE *f, char *file_name, int fdesc, int input_file);
extern void parse_app_file(FILE *f, APP_OUT& ao);
// take a string containing some space separated words.
// return an array of pointers to the null-terminated words.
// Modifies the string arg.
// TODO: use strtok here
int parse_command_line(char* p, char** argv) {
char** pp = argv;
bool space = true;
if(p==NULL) {
fprintf(stderr, "error: parse_command_line: unexpected NULL pointer p\n");
return ERR_NULL;
}
if(argv==NULL) {
fprintf(stderr, "error: parse_command_line: unexpected NULL pointer argv\n");
return ERR_NULL;
}
while (*p) {
if (isspace(*p)) {
*p = 0;
space = true;
} else {
if (space) {
*pp++ = p;
space = false;
}
}
p++;
}
*pp++ = 0;
return 0;
}
// Goes through an array of strings, and prints each string
//
static int print_argv(char** argv) {
int i;
if(argv==NULL) {
fprintf(stderr, "error: print_argv: unexpected NULL pointer argv\n");
return ERR_NULL;
}
for (i=0; argv[i]; i++) {
fprintf(stderr, "argv[%d]: %s\n", i, argv[i]);
}
return 0;
}
// Initialize the ACTIVE_TASK object members to null
//
ACTIVE_TASK::ACTIVE_TASK() {
result = NULL;
wup = NULL;
app_version = NULL;
pid = 0;
slot = 0;
state = PROCESS_UNINITIALIZED;
exit_status = 0;
signal = 0;
strcpy(dirname, "");
prev_cpu_time = 0;
}
// Initialize active task with a specific result requirement
//
int ACTIVE_TASK::init(RESULT* rp) {
if(rp==NULL) {
fprintf(stderr, "error: ACTIVE_TASK.init: unexpected NULL pointer rp\n");
return ERR_NULL;
}
result = rp;
wup = rp->wup;
app_version = wup->avp;
return 0;
}
// Start a task in a slot directory. This includes setting up soft links,
// passing preferences, and starting the actual process for computation
//
int ACTIVE_TASK::start(bool first_time) {
char exec_name[256], file_path[256], link_path[256],temp[256];
char* argv[100];
unsigned int i;
FILE_REF file_ref;
FILE_INFO* fip;
int retval;
char prefs_path[256],init_path[256];
FILE *prefs_fd,*init_file;
APP_IN app_prefs;
prev_cpu_time = 0;
// These should be chosen in a better manner (user specifiable)
app_prefs.graphics.xsize = 640;
app_prefs.graphics.ysize = 480;
app_prefs.graphics.refresh_period = 5;
app_prefs.checkpoint_period = 5;
app_prefs.poll_period = 5;
if(!first_time) app_prefs.cpu_time = result->cpu_time;
// Write out the app prefs. This has everything in the APP_IN
// struct, including graphics prefs and checkpoint/poll prefs
sprintf( prefs_path, "%s/%s", dirname, CORE_TO_APP_FILE );
prefs_fd = fopen( prefs_path, "wb" );
if( !prefs_fd ) {
if( log_flags.task_debug ) {
printf( "Failed to open core to app prefs file %s.\n", prefs_path );
}
return ERR_FOPEN;
}
rewind( prefs_fd );
write_core_file( prefs_fd,app_prefs );
fclose(prefs_fd);
// Open the init file. This file contains initialization
// information regarding tasks that can only be performed in
// the app, such as redirecting file descriptors
//
sprintf( init_path, "%s/%s", dirname, BOINC_INIT_FILE );
init_file = fopen( init_path, "wb" );
if( !init_file ) {
if( log_flags.task_debug ) {
printf( "Failed to open init file %s.\n", init_path );
}
return ERR_FOPEN;
}
rewind( init_file );
// make a soft link to the executable(s)
//
for (i=0; i<app_version->app_files.size(); i++) {
fip = app_version->app_files[i].file_info;
get_pathname(fip, file_path);
if (i == 0) {
strcpy(exec_name, fip->name);
}
if (first_time) {
sprintf(link_path, "%s/%s", dirname, fip->name);
sprintf(temp, "../../%s", file_path );
retval = boinc_link( temp, link_path);
if (log_flags.task_debug) {
printf("link %s to %s\n", file_path, link_path);
}
if (retval) {
perror("link");
fclose( init_file );
return retval;
}
}
}
// create symbolic links, and hook up descriptors, for input files
//
for (i=0; i<wup->input_files.size(); i++) {
file_ref = wup->input_files[i];
get_pathname(file_ref.file_info, file_path);
if (strlen(file_ref.open_name)) {
if (first_time) {
sprintf(link_path, "%s/%s", dirname, file_ref.open_name);
sprintf(temp, "../../%s", file_path );
if (log_flags.task_debug) {
printf("link %s to %s\n", file_path, link_path);
}
retval = boinc_link( temp, link_path);
if (retval) {
perror("link");
fclose( init_file );
return retval;
}
}
} else {
sprintf( temp, "../../%s", file_path );
write_init_file( init_file, temp, file_ref.fd, 1 );
}
}
// hook up the output files using BOINC soft links
//
for (i=0; i<result->output_files.size(); i++) {
file_ref = result->output_files[i];
get_pathname(file_ref.file_info, file_path);
if (strlen(file_ref.open_name)) {
if (first_time) {
creat(file_path, 0660);
sprintf(link_path, "%s/%s", dirname, file_ref.open_name);
sprintf(temp, "../../%s", file_path );
if (log_flags.task_debug) {
printf("link %s to %s\n", file_path, link_path);
}
retval = boinc_link( temp, link_path);
if (retval) {
fclose( init_file );
perror("link");
return retval;
}
}
} else {
sprintf( temp, "../../%s", file_path );
write_init_file( init_file, temp, file_ref.fd, 0 );
}
}
fclose( init_file );
#ifdef HAVE_UNISTD_H
#ifdef HAVE_SYS_TYPES_H
pid = fork();
if (pid == 0) {
// from here on we're running in a new process.
// If an error happens, exit nonzero so that the core client
// knows there was a problem.
// chdir() into the slot directory
//
retval = chdir(dirname);
if (retval) {
perror("chdir");
exit(retval);
}
// hook up stderr to a specially-named file
//
freopen(STDERR_FILE, "a", stderr);
argv[0] = exec_name;
parse_command_line(wup->command_line, argv+1);
if (log_flags.task_debug) print_argv(argv);
boinc_resolve_link( exec_name, temp );
retval = execv(temp, argv);
fprintf(stderr, "execv failed: %d\n", retval);
perror("execv");
exit(1);
}
if (log_flags.task_debug) printf("forked process: pid %d\n", pid);
#endif
#endif
#ifdef _WIN32
PROCESS_INFORMATION process_info;
STARTUPINFO startup_info;
HINSTANCE inst;
memset( &process_info, 0, sizeof( process_info ) );
memset( &startup_info, 0, sizeof( startup_info ) );
startup_info.cb = sizeof(startup_info);
startup_info.lpReserved = NULL;
startup_info.lpDesktop = "";
// hook up stderr to a specially-named file (do this inside the new process)
//
//freopen(STDERR_FILE, "a", stderr);
// Need to condense argv into a single string
//if (log_flags.task_debug) print_argv(argv);
sprintf( temp, "%s/%s", dirname, exec_name );
boinc_resolve_link( temp, exec_name );
if( !CreateProcess( exec_name,
wup->command_line,
NULL, // not sure about this for security
NULL, // not sure about this for security
FALSE,
CREATE_NEW_PROCESS_GROUP|NORMAL_PRIORITY_CLASS,
NULL,
dirname,
&startup_info,
&process_info )
) {
state = GetLastError();
LPVOID lpMsgBuf;
FormatMessage(
FORMAT_MESSAGE_ALLOCATE_BUFFER |
FORMAT_MESSAGE_FROM_SYSTEM |
FORMAT_MESSAGE_IGNORE_INSERTS,
NULL,
state,
0, // Default language
(LPTSTR) &lpMsgBuf,
0,
NULL
);
MessageBox( NULL, (LPCTSTR)lpMsgBuf, "Error", MB_OK | MB_ICONINFORMATION );
}
pid_handle = process_info.hProcess;
#endif
state = PROCESS_RUNNING;
return 0;
}
// Sends a request to the process of this active task to exit. If it
// doesn't exist within a set time (seconds), the process is terminated
//
void ACTIVE_TASK::request_exit(int seconds) {
int retval;
if(seconds<0) {
fprintf(stderr, "error: ACTIVE_TASK.request_exit: negative seconds\n");
seconds=0;
}
#if HAVE_SIGNAL_H
#if HAVE_SYS_TYPES_H
retval = kill(pid, SIGTERM);
boinc_sleep(seconds);
while(retval) retval=kill(pid, SIGKILL);
#endif
#endif
#ifdef _WIN32
retval = TerminateProcess(pid_handle, -1);//exit codes should be changed
boinc_sleep(seconds);
while(retval) retval=TerminateProcess(pid_handle, -1);
#endif
}
// Inserts an active task into the ACTIVE_TASK_SET and starts it up
//
int ACTIVE_TASK_SET::insert(ACTIVE_TASK* atp) {
int retval;
if(atp==NULL) {
fprintf(stderr, "error: ACTIVE_TASK.insert: unexpected NULL pointer atp\n");
return ERR_NULL;
}
get_slot_dir(atp->slot, atp->dirname);
clean_out_dir(atp->dirname);
retval = atp->start(true);
if (retval) return retval;
active_tasks.push_back(atp);
return 0;
}
// Checks if any child processes have exited and records their final CPU time
//
bool ACTIVE_TASK_SET::poll() {
int stat;
ACTIVE_TASK* atp = NULL;
char path[256];
int n;
#ifdef _WIN32
unsigned long exit_code;
int i;
FILETIME creation_time, exit_time, kernel_time, user_time;
ULARGE_INTEGER tKernel, tUser;
LONGLONG totTime;
for (i=0; i<active_tasks.size(); i++) {
atp = active_tasks[i];
if( GetExitCodeProcess( atp->pid_handle,&exit_code ) ) {
// Get the elapsed CPU time
if( GetProcessTimes( atp->pid_handle, &creation_time, &exit_time, &kernel_time, &user_time ) ) {
tKernel.LowPart = kernel_time.dwLowDateTime;
tKernel.HighPart = kernel_time.dwHighDateTime;
tUser.LowPart = user_time.dwLowDateTime;
tUser.HighPart = user_time.dwHighDateTime;
// Runtimes in 100-nanosecond units
totTime = tKernel.QuadPart + tUser.QuadPart;
atp->result->cpu_time = (totTime / 10000000.0);
} else {
// This probably isn't correct
atp->result->cpu_time = ((double)clock())/CLOCKS_PER_SEC;
}
if( exit_code != STILL_ACTIVE ) {
// Not sure how to incorporate the other states (WAS_SIGNALED, etc)
atp->state = PROCESS_EXITED;
atp->exit_status = exit_code;
atp->result->exit_status = atp->exit_status;
}
} else {
// Not sure what to do here
}
}
if( atp == NULL ) {
return false;
}
#endif
#if HAVE_SYS_RESOURCE_H
#if HAVE_SYS_WAIT_H
#if HAVE_SYS_TIME_H
struct rusage rs;
int pid;
pid = wait3(&stat, WNOHANG, &rs);
if (pid <= 0) return false;
if (log_flags.task_debug) printf("got signal for process %d\n", pid);
atp = lookup_pid(pid);
if (!atp) {
fprintf(stderr, "ACTIVE_TASK_SET::poll(): pid %d not found\n", pid);
return true;
}
atp->result->cpu_time = rs.ru_utime.tv_sec + rs.ru_utime.tv_usec/1.e6;
if (WIFEXITED(stat)) {
atp->state = PROCESS_EXITED;
atp->exit_status = WEXITSTATUS(stat);
atp->result->exit_status = atp->exit_status;
} else if (WIFSIGNALED(stat)) {
atp->state = PROCESS_WAS_SIGNALED;
atp->signal = WTERMSIG(stat);
atp->result->exit_status = atp->signal;
} else {
atp->state = PROCESS_EXIT_UNKNOWN;
atp->result->exit_status = -1;
}
#endif
#endif
#endif
// check for the stderr file, copy to result record
//
sprintf(path, "%s/%s", atp->dirname, STDERR_FILE);
FILE* f = fopen(path, "r");
if (f) {
n = fread(atp->result->stderr_out, 1, STDERR_MAX_LEN, f);
atp->result->stderr_out[STDERR_MAX_LEN-1] = 0;
fclose(f);
}
clean_out_dir(atp->dirname);
return true;
}
// Find the ACTIVE_TASK in the current set with the matching PID
//
ACTIVE_TASK* ACTIVE_TASK_SET::lookup_pid(int pid) {
unsigned int i;
ACTIVE_TASK* atp;
if(pid<0) {
fprintf(stderr, "error: ACTIVE_TASK_SET.lookup_pid: negatvie pid\n");
return NULL;
}
for (i=0; i<active_tasks.size(); i++) {
atp = active_tasks[i];
if (atp->pid == pid) return atp;
}
return NULL;
}
// Sends a suspend request to all currently running computation processes
//
void ACTIVE_TASK_SET::suspend_all() {
unsigned int i;
ACTIVE_TASK* atp;
for (i=0; i<active_tasks.size(); i++) {
atp = active_tasks[i];
atp->suspend();
}
}
// Sends a resume signal to all currently running computation processes
//
void ACTIVE_TASK_SET::unsuspend_all() {
unsigned int i;
ACTIVE_TASK* atp;
for (i=0; i<active_tasks.size(); i++) {
atp = active_tasks[i];
atp->unsuspend();
}
}
// Attempts to exit all currently running computation processes, either
// via exit request or termination
//
void ACTIVE_TASK_SET::exit_tasks() {
unsigned int i;
ACTIVE_TASK *atp;
for (i=0; i<active_tasks.size(); i++) {
atp = active_tasks[i];
atp->request_exit(0);
atp->update_time();
}
}
#ifdef _WIN32
// Send a suspend request to the ACTIVE_TASK
//
void ACTIVE_TASK::suspend() {
// figure out a way to do this, perhaps via trigger file?
//kill(atp->pid, SIGSTOP);
}
// Send a resume request to the ACTIVE_TASK
//
void ACTIVE_TASK::unsuspend() {
// figure out a way to do this, perhaps via trigger file?
//kill(atp->pid, SIGCONT);
}
#else
// Send a suspend request to the ACTIVE_TASK
//
void ACTIVE_TASK::suspend() {
kill(this->pid, SIGSTOP);
}
// Send a resume request to the ACTIVE_TASK
//
void ACTIVE_TASK::unsuspend() {
kill(this->pid, SIGCONT);
}
#endif
// Remove an ACTIVE_TASK from the set, assumes that the task has
// already been shut down via request_exit or similar means
//
int ACTIVE_TASK_SET::remove(ACTIVE_TASK* atp) {
vector<ACTIVE_TASK*>::iterator iter;
if(atp==NULL) {
fprintf(stderr, "error: ACTIVE_TASK_SET.remove: unexpected NULL pointer atp\n");
return ERR_NULL;
}
iter = active_tasks.begin();
while (iter != active_tasks.end()) {
if (*iter == atp) {
active_tasks.erase(iter);
return 0;
}
iter++;
}
fprintf(stderr, "ACTIVE_TASK_SET::remove(): not found\n");
return 1;
}
// Restart active tasks without wiping and reinitializing slot directories
//
int ACTIVE_TASK_SET::restart_tasks() {
vector<ACTIVE_TASK*>::iterator iter;
ACTIVE_TASK* atp;
int retval;
iter = active_tasks.begin();
while (iter != active_tasks.end()) {
atp = *iter;
get_slot_dir(atp->slot, atp->dirname);
retval = atp->start(false);
if (log_flags.task) {
printf("restarting application for result %s\n", atp->result->name);
}
if (retval) {
fprintf(stderr, "ACTIVE_TASKS::restart_tasks(); restart failed: %d\n", retval);
active_tasks.erase(iter);
} else {
iter++;
}
}
return 0;
}
// Update the CPU time accounting based on the APP_TO_CORE_FILE passed to
// us by the application
//
bool ACTIVE_TASK::update_time() {
FILE* app_fp;
char app_path[256];
APP_OUT ao;
sprintf(app_path, "%s/%s", dirname, APP_TO_CORE_FILE);
app_fp = fopen(app_path, "r");
if(!app_fp) return false;
parse_app_file(app_fp, ao);
if(!ao.checkpointed) return false;
result->cpu_time += ao.cpu_time_at_checkpoint - prev_cpu_time;
prev_cpu_time = ao.cpu_time_at_checkpoint;
return true;
}
// Poll each of the currently running tasks and get their CPU time
//
bool ACTIVE_TASK_SET::poll_time() {
ACTIVE_TASK* atp;
unsigned int i;
bool updated;
for(i=0; i<active_tasks.size(); i++) {
atp = active_tasks[i];
updated |= atp->update_time();
}
return updated;
}
// Write XML data about this ACTIVE_TASK
//
int ACTIVE_TASK::write(FILE* fout) {
if(fout==NULL) {
fprintf(stderr, "error: ACTIVE_TASK.write: unexpected NULL pointer fout\n");
return ERR_NULL;
}
fprintf(fout,
"<active_task>\n"
" <project_master_url>%s</project_master_url>\n"
" <result_name>%s</result_name>\n"
" <app_version_num>%d</app_version_num>\n"
" <slot>%d</slot>\n"
" <prev_cpu_time>%f</prev_cpu_time>\n"
"</active_task>\n",
result->project->master_url,
result->name,
app_version->version_num,
slot,
prev_cpu_time
);
return 0;
}
// Parse XML information about an active task
//
int ACTIVE_TASK::parse(FILE* fin, CLIENT_STATE* cs) {
char buf[256], result_name[256], project_master_url[256];
int app_version_num=0;
PROJECT* project;
if(fin==NULL) {
fprintf(stderr, "error: ACTIVE_TASK.parse: unexpected NULL pointer fin\n");
return ERR_NULL;
}
if(cs==NULL) {
fprintf(stderr, "error: ACTIVE_TASK.parse: unexpected NULL pointer cs\n");
return ERR_NULL;
}
strcpy(result_name, "");
strcpy(project_master_url, "");
while (fgets(buf, 256, fin)) {
if (match_tag(buf, "</active_task>")) {
project = cs->lookup_project(project_master_url);
if (!project) {
fprintf(stderr,
"ACTIVE_TASK::parse(): project not found: %s\n",
project_master_url
);
return -1;
}
result = cs->lookup_result(project, result_name);
if (!result) {
fprintf(stderr, "ACTIVE_TASK::parse(): result not found\n");
return -1;
}
wup = result->wup;
app_version = cs->lookup_app_version(
result->app, app_version_num
);
if (!app_version) {
fprintf(stderr, "ACTIVE_TASK::parse(): app_version not found\n");
return -1;
}
return 0;
}
else if (parse_str(buf, "<result_name>", result_name)) continue;
else if (parse_str(buf, "<project_master_url>", 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, "<prev_cpu_time>", prev_cpu_time)) continue;
else fprintf(stderr, "ACTIVE_TASK::parse(): unrecognized %s\n", buf);
}
return -1;
}
// Write XML information about this active task set
//
int ACTIVE_TASK_SET::write(FILE* fout) {
unsigned int i;
if(fout==NULL) {
fprintf(stderr, "error: ACTIVE_TASK_SET.write: unexpected NULL pointer fout\n");
return ERR_NULL;
}
fprintf(fout, "<active_task_set>\n");
for (i=0; i<active_tasks.size(); i++) {
active_tasks[i]->write(fout);
}
fprintf(fout, "</active_task_set>\n");
return 0;
}
// Parse XML information about an active task set
//
int ACTIVE_TASK_SET::parse(FILE* fin, CLIENT_STATE* cs) {
ACTIVE_TASK* atp;
char buf[256];
int retval;
if(fin==NULL) {
fprintf(stderr, "error: ACTIVE_TASK_SET.parse: unexpected NULL pointer fin\n");
return ERR_NULL;
}
if(cs==NULL) {
fprintf(stderr, "error: ACTIVE_TASK_SET.parse: unexpected NULL pointer cs\n");
return ERR_NULL;
}
while (fgets(buf, 256, fin)) {
if (match_tag(buf, "</active_task_set>")) return 0;
else if (match_tag(buf, "<active_task>")) {
atp = new ACTIVE_TASK;
retval = atp->parse(fin, cs);
if (!retval) active_tasks.push_back(atp);
else delete atp;
} else {
fprintf(stderr, "ACTIVE_TASK_SET::parse(): unrecognized %s\n", buf);
}
}
return 0;
}
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