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boinc/client/app_start.cpp

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// This file is part of BOINC.
// http://boinc.berkeley.edu
// Copyright (C) 2008 University of California
//
// BOINC 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 3 of the License, or (at your option) any later version.
//
// BOINC 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.
//
// You should have received a copy of the GNU Lesser General Public License
// along with BOINC. If not, see <http://www.gnu.org/licenses/>.
// initialization and starting of applications
#include "cpp.h"
#ifdef _WIN32
#include "boinc_win.h"
#include "win_util.h"
#define unlink _unlink
#ifdef _MSC_VER
#define snprintf _snprintf
#define strdup _strdup
#define getcwd _getcwd
#endif
#else
#include "config.h"
#if HAVE_SCHED_SETSCHEDULER && defined (__linux__)
#include <sched.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_IPC_H
#include <sys/ipc.h>
#endif
#if HAVE_SYS_WAIT_H
#include <sys/wait.h>
#endif
#include <unistd.h>
#include <cerrno>
#include <sys/stat.h>
#include <string>
#endif
#ifdef __EMX__
#include <process.h>
#endif
#if (defined (__APPLE__) && (defined(__i386__) || defined(__x86_64__)))
#include <mach-o/loader.h>
#include <mach-o/fat.h>
#include <mach/machine.h>
#include <libkern/OSByteOrder.h>
#endif
#if(!defined (_WIN32) && !defined (__EMX__))
#include <fcntl.h>
#endif
#include <vector>
using std::vector;
using std::string;
#include "base64.h"
#include "error_numbers.h"
#include "filesys.h"
#include "shmem.h"
#include "str_replace.h"
#include "str_util.h"
#include "util.h"
#include "async_file.h"
#include "client_msgs.h"
#include "client_state.h"
#include "file_names.h"
#include "result.h"
#include "sandbox.h"
#ifdef _WIN32
#include "run_app_windows.h"
#endif
#include "cs_proxy.h"
#include "app.h"
#ifdef _WIN32
// Dynamically link to these functions at runtime;
// otherwise BOINC cannot run on Win98
// CreateEnvironmentBlock
typedef BOOL (WINAPI *tCEB)(LPVOID *lpEnvironment, HANDLE hToken, BOOL bInherit);
// DestroyEnvironmentBlock
typedef BOOL (WINAPI *tDEB)(LPVOID lpEnvironment);
#endif
// print each string in an array
//
#ifndef _WIN32
static void debug_print_argv(char** argv) {
msg_printf(0, MSG_INFO, "[task] Arguments:");
for (int i=0; argv[i]; i++) {
msg_printf(0, MSG_INFO, "[task] argv[%d]: %s\n", i, argv[i]);
}
}
#endif
// For apps that use coprocessors, append "--device x" to the command line.
// NOTE: this is deprecated. Use app_init_data instead.
//
static void coproc_cmdline(
int rsc_type, RESULT* rp, double ninstances, char* cmdline
) {
char buf[256];
COPROC* coproc = &coprocs.coprocs[rsc_type];
for (int j=0; j<ninstances; j++) {
int k = rp->coproc_indices[j];
// sanity check
//
if (k < 0 || k >= coproc->count) {
msg_printf(0, MSG_INTERNAL_ERROR,
"coproc_cmdline: coproc index %d out of range", k
);
k = 0;
}
sprintf(buf, " --device %d", coproc->device_nums[k]);
strcat(cmdline, buf);
}
}
// Make a unique key for client/app shared memory segment.
// Windows: also create and attach to the segment.
//
int ACTIVE_TASK::get_shmem_seg_name() {
#ifdef _WIN32
int i;
char seg_name[256];
bool try_global = (sandbox_account_service_token != NULL);
for (i=0; i<1024; i++) {
sprintf(seg_name, "%sboinc_%d", SHM_PREFIX, i);
shm_handle = create_shmem(
seg_name, sizeof(SHARED_MEM), (void**)&app_client_shm.shm,
try_global
);
if (shm_handle) break;
}
if (!shm_handle) return ERR_SHMGET;
sprintf(shmem_seg_name, "boinc_%d", i);
#else
char init_data_path[MAXPATHLEN];
#ifndef __EMX__
// shmem_seg_name is not used with mmap() shared memory
if (app_version->api_version_at_least(6, 0)) {
shmem_seg_name = -1;
return 0;
}
#endif
sprintf(init_data_path, "%s/%s", slot_dir, INIT_DATA_FILE);
// ftok() only works if there's a file at the given location
//
if (!boinc_file_exists(init_data_path)) {
FILE* f = boinc_fopen(init_data_path, "w");
if (f) {
fclose(f);
} else {
msg_printf(wup->project, MSG_INTERNAL_ERROR,
"error: can't open file for shmem seg name"
);
}
}
shmem_seg_name = ftok(init_data_path, 1);
if (shmem_seg_name == -1) {
msg_printf(wup->project, MSG_INTERNAL_ERROR,
"error: can't open file for shmem seg name: %d", errno
);
perror("ftok");
return ERR_SHMEM_NAME;
}
#endif
return 0;
}
void ACTIVE_TASK::init_app_init_data(APP_INIT_DATA& aid) {
aid.major_version = BOINC_MAJOR_VERSION;
aid.minor_version = BOINC_MINOR_VERSION;
aid.release = BOINC_RELEASE;
aid.app_version = app_version->version_num;
safe_strcpy(aid.app_name, wup->app->name);
safe_strcpy(aid.symstore, wup->project->symstore);
safe_strcpy(aid.acct_mgr_url, gstate.acct_mgr_info.master_url);
if (wup->project->project_specific_prefs.length()) {
aid.project_preferences = strdup(
wup->project->project_specific_prefs.c_str()
);
}
aid.userid = wup->project->userid;
aid.teamid = wup->project->teamid;
aid.hostid = wup->project->hostid;
safe_strcpy(aid.user_name, wup->project->user_name);
safe_strcpy(aid.team_name, wup->project->team_name);
safe_strcpy(aid.project_dir, wup->project->project_dir_absolute());
relative_to_absolute("", aid.boinc_dir);
safe_strcpy(aid.authenticator, wup->project->authenticator);
aid.slot = slot;
#ifdef _WIN32
if (strstr(gstate.host_info.os_name, "Windows 2000")) {
// Win2K immediately reuses PIDs, so can't use this mechanism
//
aid.client_pid = 0;
} else {
aid.client_pid = GetCurrentProcessId();
}
#else
aid.client_pid = getpid();
#endif
safe_strcpy(aid.wu_name, wup->name);
safe_strcpy(aid.result_name, result->name);
aid.user_total_credit = wup->project->user_total_credit;
aid.user_expavg_credit = wup->project->user_expavg_credit;
aid.host_total_credit = wup->project->host_total_credit;
aid.host_expavg_credit = wup->project->host_expavg_credit;
double rrs = gstate.runnable_resource_share(RSC_TYPE_CPU);
if (rrs) {
aid.resource_share_fraction = wup->project->resource_share/rrs;
} else {
aid.resource_share_fraction = 1;
}
aid.host_info = gstate.host_info;
aid.proxy_info = working_proxy_info;
aid.global_prefs = gstate.global_prefs;
aid.starting_elapsed_time = checkpoint_elapsed_time;
aid.using_sandbox = g_use_sandbox;
aid.vm_extensions_disabled = gstate.host_info.p_vm_extensions_disabled;
aid.rsc_fpops_est = wup->rsc_fpops_est;
aid.rsc_fpops_bound = wup->rsc_fpops_bound;
aid.rsc_memory_bound = wup->rsc_memory_bound;
aid.rsc_disk_bound = wup->rsc_disk_bound;
aid.computation_deadline = result->computation_deadline();
int rt = app_version->gpu_usage.rsc_type;
if (rt) {
COPROC& cp = coprocs.coprocs[rt];
if (coproc_type_name_to_num(cp.type) >= 0) {
// Standardized vendor name ("NVIDIA", "ATI" or "intel_gpu")
safe_strcpy(aid.gpu_type, cp.type);
} else {
// For other vendors, use vendor name as returned by OpenCL
safe_strcpy(aid.gpu_type, cp.opencl_prop.vendor);
}
int k = result->coproc_indices[0];
if (k<0 || k>=cp.count) {
msg_printf(0, MSG_INTERNAL_ERROR,
"init_app_init_data(): coproc index %d out of range", k
);
k = 0;
}
aid.gpu_device_num = cp.device_nums[k];
aid.gpu_opencl_dev_index = cp.opencl_device_indexes[k];
aid.gpu_usage = app_version->gpu_usage.usage;
} else {
strcpy(aid.gpu_type, "");
aid.gpu_device_num = -1;
aid.gpu_opencl_dev_index = -1;
aid.gpu_usage = 0;
}
aid.ncpus = app_version->avg_ncpus;
aid.vbox_window = cc_config.vbox_window;
aid.checkpoint_period = gstate.global_prefs.disk_interval;
aid.fraction_done_start = 0;
aid.fraction_done_end = 1;
#ifdef _WIN32
safe_strcpy(aid.shmem_seg_name, shmem_seg_name);
#else
aid.shmem_seg_name = shmem_seg_name;
#endif
aid.wu_cpu_time = checkpoint_cpu_time;
}
// write the app init file.
// This is done before starting or restarting the app,
// and when project prefs have changed during app execution
//
int ACTIVE_TASK::write_app_init_file(APP_INIT_DATA& aid) {
FILE *f;
char init_data_path[MAXPATHLEN];
#if 0
msg_printf(wup->project, MSG_INFO,
"writing app_init.xml for %s; slot %d rt %s gpu_device_num %d", result->name, slot, aid.gpu_type, aid.gpu_device_num
);
#endif
sprintf(init_data_path, "%s/%s", slot_dir, INIT_DATA_FILE);
// delete the file using the switcher (Unix)
// in case it's owned by another user and we don't have write access
//
delete_project_owned_file(init_data_path, false);
f = boinc_fopen(init_data_path, "w");
if (!f) {
msg_printf(wup->project, MSG_INTERNAL_ERROR,
"Failed to open init file %s",
init_data_path
);
return ERR_FOPEN;
}
int retval = write_init_data_file(f, aid);
fclose(f);
return retval;
}
// Given a logical name of the form D1/D2/.../Dn/F,
// create the directories D1 ... Dn in the slot dir
//
static int create_dirs_for_logical_name(
const char* name, const char* slot_dir
) {
char buf[1024];
char dir_path[MAXPATHLEN];
int retval;
safe_strcpy(buf, name);
safe_strcpy(dir_path, slot_dir);
char* p = buf;
while (1) {
char* q = strstr(p, "/");
if (!q) break;
*q = 0;
strcat(dir_path, "/");
strcat(dir_path, p);
retval = boinc_mkdir(dir_path);
if (retval) return retval;
p = q+1;
}
return 0;
}
static void prepend_prefix(APP_VERSION* avp, char* in, char* out, int len) {
if (strlen(avp->file_prefix)) {
sprintf(out, "%s/%s", avp->file_prefix, in);
} else {
strlcpy(out, in, len);
}
}
// an input/output file must be copied if either
// - the FILE_REFERENCE says so or
// - the APP_VERSION has a non-empty file_prefix
//
bool ACTIVE_TASK::must_copy_file(FILE_REF& fref, bool is_io_file) {
if (fref.copy_file) return true;
if (is_io_file && strlen(app_version->file_prefix)) return true;
return false;
}
// set up a file reference, given a slot dir and project dir.
// This means:
// 1) copy the file to slot dir, if reference is by copy
// 2) else make a soft link
//
int ACTIVE_TASK::setup_file(
FILE_INFO* fip, FILE_REF& fref, char* file_path, bool input, bool is_io_file
) {
char link_path[MAXPATHLEN], rel_file_path[MAXPATHLEN], open_name[256];
int retval;
PROJECT* project = result->project;
if (log_flags.slot_debug) {
msg_printf(wup->project, MSG_INFO,
"setup_file: %s (%s)", file_path, input?"input":"output"
);
}
if (strlen(fref.open_name)) {
if (is_io_file) {
prepend_prefix(
app_version, fref.open_name, open_name, sizeof(open_name)
);
} else {
safe_strcpy(open_name, fref.open_name);
}
retval = create_dirs_for_logical_name(open_name, slot_dir);
if (retval) return retval;
sprintf(link_path, "%s/%s", slot_dir, open_name);
} else {
sprintf(link_path, "%s/%s", slot_dir, fip->name);
}
sprintf(rel_file_path, "../../%s", file_path );
if (boinc_file_exists(link_path)) {
return 0;
}
if (must_copy_file(fref, is_io_file)) {
if (input) {
// the file may be there already (async copy case)
//
if (boinc_file_exists(link_path)) {
return 0;
}
if (fip->nbytes > ASYNC_FILE_THRESHOLD) {
ASYNC_COPY* ac = new ASYNC_COPY;
retval = ac->init(this, fip, file_path, link_path);
if (retval) return retval;
return ERR_IN_PROGRESS;
} else {
retval = boinc_copy(file_path, link_path);
if (retval) {
msg_printf(project, MSG_INTERNAL_ERROR,
"Can't copy %s to %s: %s", file_path, link_path,
boincerror(retval)
);
return retval;
}
retval = fip->set_permissions(link_path);
if (retval) return retval;
}
}
return 0;
}
#ifdef _WIN32
retval = make_soft_link(project, link_path, rel_file_path);
if (retval) return retval;
#else
if (project->use_symlinks) {
retval = symlink(rel_file_path, link_path);
} else {
retval = make_soft_link(project, link_path, rel_file_path);
}
if (retval) return retval;
#endif
if (g_use_sandbox) set_to_project_group(link_path);
return 0;
}
int ACTIVE_TASK::link_user_files() {
PROJECT* project = wup->project;
unsigned int i;
FILE_REF fref;
FILE_INFO* fip;
char file_path[MAXPATHLEN];
for (i=0; i<project->user_files.size(); i++) {
fref = project->user_files[i];
fip = fref.file_info;
if (fip->status != FILE_PRESENT) continue;
get_pathname(fip, file_path, sizeof(file_path));
setup_file(fip, fref, file_path, true, false);
}
return 0;
}
int ACTIVE_TASK::copy_output_files() {
char slotfile[256], projfile[256], open_name[256];
unsigned int i;
for (i=0; i<result->output_files.size(); i++) {
FILE_REF& fref = result->output_files[i];
if (!must_copy_file(fref, true)) continue;
FILE_INFO* fip = fref.file_info;
prepend_prefix(
app_version, fref.open_name, open_name, sizeof(open_name)
);
sprintf(slotfile, "%s/%s", slot_dir, open_name);
get_pathname(fip, projfile, sizeof(projfile));
int retval = boinc_rename(slotfile, projfile);
// the rename fails if the output file isn't there.
//
if (retval) {
if (retval == ERR_FILE_MISSING) {
if (log_flags.slot_debug) {
msg_printf(wup->project, MSG_INFO,
"[slot] output file %s missing, not copying", slotfile
);
}
} else {
msg_printf(wup->project, MSG_INTERNAL_ERROR,
"Can't rename output file %s to %s: %s",
slotfile, projfile, boincerror(retval)
);
}
} else {
if (log_flags.slot_debug) {
msg_printf(wup->project, MSG_INFO,
"[slot] renamed %s to %s", slotfile, projfile
);
}
}
}
return 0;
}
// Start a task in a slot directory.
// This includes setting up soft links,
// passing preferences, and starting the process
//
// Current dir is top-level BOINC dir
//
// postcondition:
// If any error occurs
// ACTIVE_TASK::task_state is PROCESS_COULDNT_START
// report_result_error() is called
// else
// ACTIVE_TASK::task_state is PROCESS_EXECUTING
//
// If "test" is set, we're doing the API test; just run "test_app".
//
int ACTIVE_TASK::start(bool test) {
char exec_name[256], file_path[MAXPATHLEN], buf[256], exec_path[MAXPATHLEN];
char cmdline[80000]; // 64KB plus some extra
unsigned int i;
FILE_REF fref;
FILE_INFO* fip;
int retval;
APP_INIT_DATA aid;
#ifdef _WIN32
bool success = false;
LPVOID environment_block=NULL;
#endif
if (async_copy) {
if (log_flags.task_debug) {
msg_printf(wup->project, MSG_INFO,
"[task_debug] ACTIVE_TASK::start(): async file copy already in progress"
);
}
return 0;
}
// run it at above idle priority if it
// - uses coprocs
// - uses less than one CPU
// - is a wrapper
//
bool high_priority = false;
if (app_version->rsc_type()) high_priority = true;
if (app_version->avg_ncpus < 1) high_priority = true;
if (app_version->is_wrapper) high_priority = true;
if (wup->project->verify_files_on_app_start) {
fip=0;
retval = gstate.input_files_available(result, true, &fip);
if (retval) {
if (fip) {
snprintf(
buf, sizeof(buf),
"Input file %s missing or invalid: %s",
fip->name, boincerror(retval)
);
} else {
safe_strcpy(buf, "Input file missing or invalid");
}
goto error;
}
}
current_cpu_time = checkpoint_cpu_time;
elapsed_time = checkpoint_elapsed_time;
graphics_request_queue.init(result->name); // reset message queues
process_control_queue.init(result->name);
bytes_sent_episode = 0;
bytes_received_episode = 0;
if (!app_client_shm.shm) {
retval = get_shmem_seg_name();
if (retval) {
sprintf(buf,
"Can't get shared memory segment name: %s",
boincerror(retval)
);
goto error;
}
}
// this must go AFTER creating shmem name,
// since the shmem name is part of the file
//
init_app_init_data(aid);
retval = write_app_init_file(aid);
if (retval) {
sprintf(buf, "Can't write init file: %s", boincerror(retval));
goto error;
}
// set up applications files
//
if (test) {
strcpy(exec_name, "test_app");
strcpy(exec_path, "test_app");
} else {
strcpy(exec_name, "");
}
for (i=0; i<app_version->app_files.size(); i++) {
fref = app_version->app_files[i];
fip = fref.file_info;
get_pathname(fip, file_path, sizeof(file_path));
if (fref.main_program) {
if (is_image_file(fip->name)) {
sprintf(buf, "Main program %s is an image file", fip->name);
retval = ERR_NO_SIGNATURE;
goto error;
}
if (!fip->executable && !wup->project->anonymous_platform) {
sprintf(buf, "Main program %s is not executable", fip->name);
retval = ERR_NO_SIGNATURE;
goto error;
}
safe_strcpy(exec_name, fip->name);
safe_strcpy(exec_path, file_path);
}
retval = setup_file(fip, fref, file_path, true, false);
if (retval == ERR_IN_PROGRESS) {
set_task_state(PROCESS_COPY_PENDING, "start");
return 0;
} else if (retval) {
safe_strcpy(buf, "Can't link app version file");
goto error;
}
}
if (!strlen(exec_name)) {
safe_strcpy(buf, "No main program specified");
retval = ERR_NOT_FOUND;
goto error;
}
// set up input, output files
//
for (i=0; i<wup->input_files.size(); i++) {
fref = wup->input_files[i];
fip = fref.file_info;
get_pathname(fref.file_info, file_path, sizeof(file_path));
retval = setup_file(fip, fref, file_path, true, true);
if (retval == ERR_IN_PROGRESS) {
set_task_state(PROCESS_COPY_PENDING, "start");
return 0;
} else if (retval) {
safe_strcpy(buf, "Can't link input file");
goto error;
}
}
for (i=0; i<result->output_files.size(); i++) {
fref = result->output_files[i];
if (must_copy_file(fref, true)) continue;
fip = fref.file_info;
get_pathname(fref.file_info, file_path, sizeof(file_path));
retval = setup_file(fip, fref, file_path, false, true);
if (retval) {
safe_strcpy(buf, "Can't link output file");
goto error;
}
}
link_user_files();
// don't check retval here
// remove temporary exit file from last run
//
sprintf(file_path, "%s/%s", slot_dir, TEMPORARY_EXIT_FILE);
delete_project_owned_file(file_path, true);
if (cc_config.exit_before_start) {
msg_printf(0, MSG_INFO, "about to start a job; exiting");
exit(0);
}
#ifdef _WIN32
PROCESS_INFORMATION process_info;
STARTUPINFO startup_info;
char slotdirpath[MAXPATHLEN];
char error_msg[1024];
char error_msg2[1024];
DWORD last_error = 0;
memset(&process_info, 0, sizeof(process_info));
memset(&startup_info, 0, sizeof(startup_info));
startup_info.cb = sizeof(startup_info);
// suppress 2-sec rotating hourglass cursor on startup
//
startup_info.dwFlags = STARTF_FORCEOFFFEEDBACK;
app_client_shm.reset_msgs();
if (cc_config.run_apps_manually) {
// fill in client's PID so we won't think app has exited
//
pid = GetCurrentProcessId();
process_handle = GetCurrentProcess();
set_task_state(PROCESS_EXECUTING, "start");
return 0;
}
sprintf(cmdline, "%s %s %s",
exec_path, wup->command_line.c_str(), app_version->cmdline
);
if (!app_version->api_version_at_least(7, 5)) {
int rt = app_version->gpu_usage.rsc_type;
if (rt) {
coproc_cmdline(rt, result, app_version->gpu_usage.usage, cmdline);
}
}
relative_to_absolute(slot_dir, slotdirpath);
int prio_mask;
if (cc_config.no_priority_change) {
prio_mask = 0;
} else if (high_priority) {
prio_mask = BELOW_NORMAL_PRIORITY_CLASS;
} else {
prio_mask = IDLE_PRIORITY_CLASS;
}
for (i=0; i<5; i++) {
last_error = 0;
if (sandbox_account_service_token != NULL) {
if (!CreateEnvironmentBlock(&environment_block, sandbox_account_service_token, FALSE)) {
if (log_flags.task) {
windows_format_error_string(GetLastError(), error_msg, sizeof(error_msg));
msg_printf(wup->project, MSG_INFO,
"Process environment block creation failed: %s", error_msg
);
}
}
if (CreateProcessAsUser(
sandbox_account_service_token,
exec_path,
cmdline,
NULL,
NULL,
FALSE,
CREATE_NEW_PROCESS_GROUP|CREATE_NO_WINDOW|prio_mask|CREATE_UNICODE_ENVIRONMENT,
environment_block,
slotdirpath,
&startup_info,
&process_info
)) {
success = true;
break;
} else {
last_error = GetLastError();
windows_format_error_string(last_error, error_msg, sizeof(error_msg));
msg_printf(wup->project, MSG_INTERNAL_ERROR,
"Process creation failed: %s - error code %d (0x%x)",
error_msg, last_error, last_error
);
}
if (!DestroyEnvironmentBlock(environment_block)) {
if (log_flags.task) {
windows_format_error_string(GetLastError(), error_msg, sizeof(error_msg2));
msg_printf(wup->project, MSG_INFO,
"Process environment block cleanup failed: %s",
error_msg2
);
}
}
} else {
if (CreateProcess(
exec_path,
cmdline,
NULL,
NULL,
FALSE,
CREATE_NEW_PROCESS_GROUP|CREATE_NO_WINDOW|prio_mask,
NULL,
slotdirpath,
&startup_info,
&process_info
)) {
success = true;
break;
} else {
last_error = GetLastError();
windows_format_error_string(last_error, error_msg, sizeof(error_msg));
msg_printf(wup->project, MSG_INTERNAL_ERROR,
"Process creation failed: %s - error code %d (0x%x)",
error_msg, last_error, last_error
);
}
}
boinc_sleep(drand());
}
if (!success) {
sprintf(buf, "CreateProcess() failed - %s", error_msg);
if (last_error == ERROR_NOT_ENOUGH_MEMORY) {
// if CreateProcess() failed because system is low on memory,
// treat this like a temporary exit;
// retry in 10 min, and give up after 100 times
//
bool will_restart;
handle_temporary_exit(will_restart, 600, "not enough memory", false);
if (will_restart) return 0;
}
retval = ERR_EXEC;
goto error;
}
pid = process_info.dwProcessId;
process_handle = process_info.hProcess;
CloseHandle(process_info.hThread); // thread handle is not used
#elif defined(__EMX__)
char* argv[100];
char current_dir[_MAX_PATH];
// Set up client/app shared memory seg if needed
//
if (!app_client_shm.shm) {
retval = create_shmem(
shmem_seg_name, sizeof(SHARED_MEM), (void**)&app_client_shm.shm
);
if (retval) {
return retval;
}
}
app_client_shm.reset_msgs();
// save current dir
getcwd(current_dir, sizeof(current_dir));
// chdir() into the slot directory
//
retval = chdir(slot_dir);
if (retval) {
sprintf(buf, "Can't change directory to %s: %s", slot_dir, boincerror(retval));
goto error;
}
// hook up stderr to a specially-named file
//
//freopen(STDERR_FILE, "a", stderr);
argv[0] = exec_name;
char cmdline[8192];
safe_strcpy(cmdline, wup->command_line.c_str());
if (strlen(result->cmdline)) {
strcat(cmdline, " ");
strcat(cmdline, result->cmdline);
}
parse_command_line(cmdline, argv+1);
if (log_flags.task_debug) {
debug_print_argv(argv);
}
sprintf(buf, "../../%s", exec_path );
pid = spawnv(P_NOWAIT, buf, argv);
if (pid == -1) {
sprintf(buf, "Process creation failed: %s\n", boincerror(retval));
chdir(current_dir);
retval = ERR_EXEC;
goto error;
}
// restore current dir
chdir(current_dir);
if (log_flags.task_debug) {
msg_printf(wup->project, MSG_INFO,
"[task] ACTIVE_TASK::start(): forked process: pid %d\n", pid
);
}
if (!cc_config.no_priority_change) {
if (setpriority(PRIO_PROCESS, pid,
high_priority?PROCESS_MEDIUM_PRIORITY:PROCESS_IDLE_PRIORITY)
) {
perror("setpriority");
}
}
#else
// Unix/Linux/Mac case
char* argv[100];
char current_dir[1024];
if (getcwd(current_dir, sizeof(current_dir)) == NULL) {
sprintf(buf, "Can't get cwd");
goto error;
}
sprintf(cmdline, "%s %s",
wup->command_line.c_str(), app_version->cmdline
);
if (!app_version->api_version_at_least(7, 5)) {
int rt = app_version->gpu_usage.rsc_type;
if (rt) {
coproc_cmdline(rt, result, app_version->gpu_usage.usage, cmdline);
}
}
// Set up client/app shared memory seg if needed
//
if (!app_client_shm.shm) {
#ifdef ANDROID
if (true) {
#else
if (app_version->api_version_at_least(6, 0)) {
#endif
// Use mmap() shared memory
sprintf(buf, "%s/%s", slot_dir, MMAPPED_FILE_NAME);
if (g_use_sandbox) {
if (!boinc_file_exists(buf)) {
int fd = open(buf, O_RDWR | O_CREAT, 0660);
if (fd >= 0) {
close (fd);
if (g_use_sandbox) set_to_project_group(buf);
}
}
}
retval = create_shmem_mmap(
buf, sizeof(SHARED_MEM), (void**)&app_client_shm.shm
);
if (retval) {
msg_printf(wup->project, MSG_INTERNAL_ERROR,
"ACTIVE_TASK::start(): can't create memory-mapped file: %s",
boincerror(retval)
);
return retval;
}
} else {
// Use shmget() shared memory
retval = create_shmem(
shmem_seg_name, sizeof(SHARED_MEM), gstate.boinc_project_gid,
(void**)&app_client_shm.shm
);
if (retval) {
needs_shmem = true;
destroy_shmem(shmem_seg_name);
return retval;
}
}
needs_shmem = false;
}
app_client_shm.reset_msgs();
#if (defined (__APPLE__) && (defined(__i386__) || defined(__x86_64__)))
// PowerPC apps emulated on i386 Macs crash if running graphics
powerpc_emulated_on_i386 = ! is_native_i386_app(exec_path);
#endif
if (cc_config.run_apps_manually) {
pid = getpid(); // use the client's PID
set_task_state(PROCESS_EXECUTING, "start");
return 0;
}
pid = fork();
if (pid == -1) {
sprintf(buf, "fork() failed: %s", strerror(errno));
retval = ERR_FORK;
goto error;
}
if (pid == 0) {
// from here on we're running in a new process.
// If an error happens,
// exit nonzero so that the client knows there was a problem.
// don't pass stdout to the app
//
int fd = open("/dev/null", O_RDWR);
dup2(fd, STDOUT_FILENO);
close(fd);
// prepend to library path:
// - the project dir (../../projects/X)
// - the slot dir (.)
// - the BOINC dir (../..)
// (Mac) /usr/local/cuda/lib/
// We use relative paths in case higher-level dirs
// are not readable to the account under which app runs
//
char libpath[8192];
char newlibs[256];
sprintf(newlibs, "../../%s:.:../..", wup->project->project_dir());
#ifdef __APPLE__
strcat(newlibs, ":/usr/local/cuda/lib/");
#endif
char* p = getenv("LD_LIBRARY_PATH");
if (p) {
sprintf(libpath, "%s:%s", newlibs, p);
} else {
safe_strcpy(libpath, newlibs);
}
setenv("LD_LIBRARY_PATH", libpath, 1);
// On the Mac, do the same for DYLD_LIBRARY_PATH
//
#ifdef __APPLE__
p = getenv("DYLD_LIBRARY_PATH");
if (p) {
sprintf(libpath, "%s:%s", newlibs, p);
} else {
safe_strcpy(libpath, newlibs);
}
setenv("DYLD_LIBRARY_PATH", libpath, 1);
#endif
retval = chdir(slot_dir);
if (retval) {
perror("chdir");
fflush(NULL);
_exit(errno);
}
#if 0
// set stack size limit to the max.
// Some BOINC apps have reported problems with exceeding
// small stack limits (e.g. 8 MB)
// and it seems like the best thing to raise it as high as possible
//
struct rlimit rlim;
#define MIN_STACK_LIMIT 64000000
getrlimit(RLIMIT_STACK, &rlim);
if (rlim.rlim_cur != RLIM_INFINITY && rlim.rlim_cur <= MIN_STACK_LIMIT) {
if (rlim.rlim_max == RLIM_INFINITY || rlim.rlim_max > MIN_STACK_LIMIT) {
rlim.rlim_cur = MIN_STACK_LIMIT;
} else {
rlim.rlim_cur = rlim.rlim_max;
}
setrlimit(RLIMIT_STACK, &rlim);
}
#endif
// hook up stderr to a specially-named file
//
(void) freopen(STDERR_FILE, "a", stderr);
// lower our priority if needed
//
if (!cc_config.no_priority_change) {
#if HAVE_SETPRIORITY
if (setpriority(PRIO_PROCESS, 0,
high_priority?PROCESS_MEDIUM_PRIORITY:PROCESS_IDLE_PRIORITY)
) {
perror("setpriority");
}
#endif
#ifdef ANDROID
// Android has its own notion of background scheduling
if (!high_priority) {
FILE* f = fopen("/dev/cpuctl/apps/bg_non_interactive/tasks", "w");
if (!f) {
msg_printf(NULL, MSG_INFO, "Can't open /dev/cpuctl/apps/bg_non_interactive/tasks");
} else {
fprintf(f, "%d", getpid());
fclose(f);
}
}
#endif
#if HAVE_SCHED_SETSCHEDULER && defined(SCHED_BATCH) && defined (__linux__)
if (!high_priority) {
struct sched_param sp;
sp.sched_priority = 0;
if (sched_setscheduler(0, SCHED_BATCH, &sp)) {
perror("sched_setscheduler");
}
}
#endif
}
// Run the application program.
// If using account-based sandboxing, use a helper app
// to do this, to set the right user ID
//
if (test) {
strcpy(buf, exec_path);
} else {
sprintf(buf, "../../%s", exec_path);
}
if (g_use_sandbox) {
char switcher_path[MAXPATHLEN];
sprintf(switcher_path, "../../%s/%s",
SWITCHER_DIR, SWITCHER_FILE_NAME
);
argv[0] = const_cast<char*>(SWITCHER_FILE_NAME);
argv[1] = buf;
argv[2] = exec_name;
parse_command_line(cmdline, argv+3);
if (log_flags.task_debug) {
debug_print_argv(argv);
}
// Files written by projects have user boinc_project
// and group boinc_project,
// so they must be world-readable so BOINC CLient can read them
//
umask(2);
retval = execv(switcher_path, argv);
} else {
argv[0] = buf;
parse_command_line(cmdline, argv+1);
retval = execv(buf, argv);
}
fprintf(stderr,
"Process creation (%s) failed: %s, errno=%d\n",
buf, boincerror(retval), errno
);
perror("execv");
fflush(NULL);
_exit(errno);
}
// parent process (client) continues here
//
if (log_flags.task_debug) {
msg_printf(wup->project, MSG_INFO,
"[task] ACTIVE_TASK::start(): forked process: pid %d\n", pid
);
}
#ifdef ANDROID
#endif
#endif
set_task_state(PROCESS_EXECUTING, "start");
return 0;
// go here on error; "buf" contains error message, "retval" is nonzero
//
error:
if (test) {
return retval;
}
// if something failed, it's possible that the executable was munged.
// Verify it to trigger another download.
//
gstate.input_files_available(result, true);
gstate.report_result_error(*result, "couldn't start app: %s", buf);
if (log_flags.task_debug) {
msg_printf(wup->project, MSG_INFO,
"[task] couldn't start app: %s", buf
);
}
set_task_state(PROCESS_COULDNT_START, "start");
return retval;
}
// Resume the task if it was previously running; otherwise start it
// Postcondition: "state" is set correctly
//
int ACTIVE_TASK::resume_or_start(bool first_time) {
const char* str = "??";
int retval;
switch (task_state()) {
case PROCESS_UNINITIALIZED:
str = (first_time)?"Starting":"Restarting";
retval = start();
if ((retval == ERR_SHMGET) || (retval == ERR_SHMAT)) {
return retval;
}
if (retval) {
set_task_state(PROCESS_COULDNT_START, "resume_or_start1");
return retval;
}
break;
case PROCESS_SUSPENDED:
retval = unsuspend();
if (retval) {
msg_printf(wup->project, MSG_INTERNAL_ERROR,
"Couldn't resume task %s", result->name
);
set_task_state(PROCESS_COULDNT_START, "resume_or_start2");
return retval;
}
str = "Resuming";
break;
default:
msg_printf(result->project, MSG_INTERNAL_ERROR,
"Unexpected state %d for task %s", task_state(), result->name
);
return 0;
}
if (log_flags.task && first_time) {
msg_printf(result->project, MSG_INFO,
"Starting task %s", result->name
);
}
if (log_flags.cpu_sched) {
char buf[256];
strcpy(buf, "");
if (strlen(app_version->plan_class)) {
sprintf(buf, " (%s)", app_version->plan_class);
}
msg_printf(result->project, MSG_INFO,
"[cpu_sched] %s task %s using %s version %d%s in slot %d",
str,
result->name,
app_version->app->name,
app_version->version_num,
buf,
slot
);
}
return 0;
}
#if (defined (__APPLE__) && (defined(__i386__) || defined(__x86_64__)))
union headeru {
fat_header fat;
mach_header mach;
};
// Read the mach-o headers to determine the architectures
// supported by executable file.
// Returns 1 if application can run natively on i386 / x86_64 Macs,
// else returns 0.
//
int ACTIVE_TASK::is_native_i386_app(char* exec_path) {
FILE *f;
int retval = 0;
headeru myHeader;
fat_arch fatHeader;
uint32_t n, i, len;
uint32_t theMagic;
integer_t theType;
f = boinc_fopen(exec_path, "rb");
if (!f) {
return retval; // Should never happen
}
myHeader.fat.magic = 0;
myHeader.fat.nfat_arch = 0;
fread(&myHeader, 1, sizeof(fat_header), f);
theMagic = myHeader.mach.magic;
switch (theMagic) {
case MH_CIGAM:
case MH_MAGIC:
case MH_MAGIC_64:
case MH_CIGAM_64:
theType = myHeader.mach.cputype;
if ((theMagic == MH_CIGAM) || (theMagic == MH_CIGAM_64)) {
theType = OSSwapInt32(theType);
}
if ((theType == CPU_TYPE_I386) || (theType == CPU_TYPE_X86_64)) {
retval = 1; // Single-architecture i386or x86_64 file
}
break;
case FAT_MAGIC:
case FAT_CIGAM:
n = myHeader.fat.nfat_arch;
if (theMagic == FAT_CIGAM) {
n = OSSwapInt32(myHeader.fat.nfat_arch);
}
// Multiple architecture (fat) file
for (i=0; i<n; i++) {
len = fread(&fatHeader, 1, sizeof(fat_arch), f);
if (len < sizeof(fat_arch)) {
break; // Should never happen
}
theType = fatHeader.cputype;
if (theMagic == FAT_CIGAM) {
theType = OSSwapInt32(theType);
}
if ((theType == CPU_TYPE_I386) || (theType == CPU_TYPE_X86_64)) {
retval = 1;
break;
}
}
break;
default:
break;
}
fclose (f);
return retval;
}
#endif
// The following runs "test_app" and sends it various messages.
// Used for testing the runtime system.
//
void run_test_app() {
WORKUNIT wu;
PROJECT project;
APP app;
APP_VERSION av;
ACTIVE_TASK at;
ACTIVE_TASK_SET ats;
RESULT result;
int retval;
char buf[256];
getcwd(buf, sizeof(buf)); // so we can see where we're running
gstate.run_test_app = true;
wu.project = &project;
wu.app = &app;
wu.command_line = string("--critical_section");
strcpy(app.name, "test app");
av.init();
av.avg_ncpus = 1;
strcpy(result.name, "test result");
result.avp = &av;
result.wup = &wu;
result.project = &project;
result.app = &app;
at.result = &result;
at.wup = &wu;
at.app_version = &av;
at.max_elapsed_time = 1e6;
at.max_disk_usage = 1e14;
at.max_mem_usage = 1e14;
strcpy(at.slot_dir, ".");
#if 1
// test file copy
//
ASYNC_COPY* ac = new ASYNC_COPY;
FILE_INFO fi;
retval = ac->init(&at, &fi, "big_file", "./big_file_copy");
if (retval) {
exit(1);
}
while (1) {
do_async_file_ops();
if (at.async_copy == NULL) {
break;
}
}
fprintf(stderr, "done\n");
exit(0);
#endif
ats.active_tasks.push_back(&at);
unlink("boinc_finish_called");
unlink("boinc_lockfile");
unlink("boinc_temporary_exit");
unlink("stderr.txt");
retval = at.start(true);
if (retval) {
fprintf(stderr, "start() failed: %s\n", boincerror(retval));
}
while (1) {
gstate.now = dtime();
at.preempt(REMOVE_NEVER);
ats.poll();
boinc_sleep(.1);
at.unsuspend();
ats.poll();
boinc_sleep(.2);
//at.request_reread_prefs();
}
}
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