boinc/client/app.h

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// The contents of this file are subject to the BOINC 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://boinc.berkeley.edu/license_1.0.txt
//
// 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):
//
#ifndef _TASK_
#define _TASK_
#ifndef _WIN32
#include <stdio.h>
#include <vector>
#endif
#include "client_types.h"
#include "app_ipc.h"
class CLIENT_STATE;
typedef int PROCESS_ID;
// Possible states of a process in an ACTIVE_TASK
#define PROCESS_UNINITIALIZED 0
#define PROCESS_RUNNING 1
#define PROCESS_EXITED 2
#define PROCESS_WAS_SIGNALED 3
#define PROCESS_EXIT_UNKNOWN 4
#define PROCESS_ABORT_PENDING 5
// process exceeded limits; killed it, waiting to exit
#define PROCESS_ABORTED 6
// process has exited
#define PROCESS_COULDNT_START 7
#define PROCESS_IN_LIMBO 8
// process exited zero, but no finish file.
// Leave it there.
// Possible scheduler states of an ACTIVE_TASK
#define CPU_SCHED_UNINITIALIZED 0
#define CPU_SCHED_PREEMPTED 1
#define CPU_SCHED_RUNNING 2
// Represents a task in progress.
// The execution of a task may be divided into many "episodes"
// (if the host is turned off/on, e.g.)
// A task may checkpoint now and then.
// Each episode begins with the state of the last checkpoint.
//
// "CPU time" refers to the sum over all episodes.
// (not counting the "lost" time after the last checkpoint
// in episodes before the current one)
//
// When an active task is created, it is assigned a "slot"
// which determines the directory it runs in.
// This doesn't change over the life of the active task;
// thus the task can use the slot directory for temp files
// that BOINC doesn't know about.
//
class ACTIVE_TASK {
public:
#ifdef _WIN32
HANDLE pid_handle, thread_handle, quitRequestEvent, shm_handle;
#else
key_t shm_key;
#endif
RESULT* result;
WORKUNIT* wup;
APP_VERSION* app_version;
PROCESS_ID pid;
int slot; // which slot (determines directory)
int state;
int scheduler_state;
int next_scheduler_state; // temp
int exit_status;
int signal;
double fraction_done;
// App's estimate of how much of the work unit is done.
// Passed from the application via an API call;
// will be zero if the app doesn't use this call
double frac_rate_of_change;
// How much the percent done changes per second,
// based on a recent exponential weighted average
double last_frac_done, recent_change;
double last_frac_update;
double cpu_time_at_last_sched;
// CPU time when CPU scheduler last ran
double episode_start_cpu_time;
// CPU time at the start of current episode
double checkpoint_cpu_time;
// CPU at the last checkpoint
double current_cpu_time;
// most recent CPU time reported by app
double vm_size;
// most recent virtual memory used in kbytes
double resident_set_size;
// most recent resident set size in kbytes
int current_disk_usage(double&);
// disk used by output files and temp files of this task
char slot_dir[256]; // directory where process runs
double max_cpu_time; // abort if total CPU exceeds this
double max_disk_usage; // abort if disk usage (in+out+temp) exceeds this
double max_mem_usage; // abort if memory usage exceeds this
bool have_trickle_down;
APP_CLIENT_SHM app_client_shm; // core/app shared mem
// info related to app's graphics mode (win, screensaver, etc.)
// NOTE: because of the way message-passing works,
// request_graphics_mode() sets a variable (graphic_mode_requested).
// ACTIVE_TASK_SET::poll_graphics() tries to send this,
// and sets graphics_mode_sent when it succeeds.
//
int graphics_mode_requested; // mode to send
int graphics_mode_sent; // mode actually sent
int graphics_mode_acked; // mode acked by app
int graphics_mode_before_ss; // mode before last screensaver request
void request_graphics_mode(int);
bool send_graphics_mode(int);
int request_reread_prefs();
void check_graphics_mode_ack();
int link_user_files();
ACTIVE_TASK();
~ACTIVE_TASK();
int init(RESULT*);
int start(bool first_time); // start the task running
int request_exit(); // Send a SIGQUIT signal or equivalent
int kill_task(); // send a SIGKILL signal or equivalent
int suspend(); // send a SIGSTOP signal or equivalent
int unsuspend(); // send a SIGCONT signal or equivalent
int abort_task(char*); // flag as abort pending and send kill signal
bool task_exited(); // return true if this task has exited
int preempt();
int resume_or_start();
bool check_max_cpu_exceeded();
bool check_max_disk_exceeded();
bool check_max_mem_exceeded();
void estimate_frac_rate_of_change(double);
bool get_msg();
double est_time_to_completion();
bool read_stderr_file();
bool finish_file_present();
bool supports_graphics();
int write_app_init_file(APP_INIT_DATA&);
int move_trickle_file();
int write(MIOFILE&);
int parse(MIOFILE&);
};
class ACTIVE_TASK_SET {
public:
typedef std::vector<ACTIVE_TASK*> active_tasks_v;
active_tasks_v active_tasks;
int remove(ACTIVE_TASK*);
ACTIVE_TASK* lookup_pid(int);
ACTIVE_TASK* lookup_result(RESULT*);
bool poll();
void suspend_all();
void unsuspend_all();
int restart_tasks(int max_tasks);
void request_tasks_exit(PROJECT* p=0);
int wait_for_exit(double, PROJECT* p=0);
int exit_tasks(PROJECT* p=0);
void kill_tasks(PROJECT* p=0);
int abort_project(PROJECT*);
bool get_msgs();
bool check_app_exited();
bool check_rsc_limits_exceeded();
int get_free_slot();
void send_heartbeats();
void send_trickle_downs();
// screensaver-related functions
//ACTIVE_TASK* get_graphics_capable_app();
ACTIVE_TASK* get_app_graphics_mode_requested(int req_mode);
void save_app_modes();
void hide_apps();
void restore_apps();
void graphics_poll();
void request_reread_prefs(PROJECT*);
int write(MIOFILE&);
int parse(MIOFILE&);
};
#endif